Hey!
Ich habe mir letztens einen neuen Arbeitsrechner zusammengestellt.
Ich habe, schande über mich, CachyOS installiert (Gründe dafür sind nicht die nutzlosen Kernel Optimierungen, sondern weil Manjaro bei vielen Sachen rumzickt, das kann ich auf einem Arbeitsrechner nicht gebrauchen. Und CachyOS ist auch nicht das Gelbe vom Ei, nur mal so nebenbei).
Wie auch immer, ich habe eine NVMe mit 14000 Lese- und 13000 Schreibgeschwindigkeit.
Mit dem Btrfs bekomme ich gerade so zwischen 2500 und 3000 beim schreiben. Ohne CoW (Copy on Write) kommt die NVMe auf ca. 12500 (ich nutze LUKS, deswegen etwas langsamer).
Klar, ich ich könnte jetzt neu installieren mit ext4, dazu habe ich aber keine Lust, da ich schon zu viel eingerichtet habe. Ich könnte auch die Kompression in der fstab rausnehmen, und das ganze CoW ausstellen, aber das gilt dann nur für neue Ordner und Dateien.
Meine Frage ist:
Ist das bei euch auch so extrem langsam?
Ich habe mir sogar extra heute morgen Scripte gebaut um es zu verifizieren.
Hier das erste (nvme-diagnose.sh):
#!/bin/bash
OUT="$HOME/nvme-diagnose-$(date +%Y%m%d-%H%M%S).txt"
exec > >(tee "$OUT") 2>&1
echo "============================================================"
echo " NVMe / LUKS / BTRFS DIAGNOSE"
echo " $(date)"
echo "============================================================"
echo
echo "### SYSTEM"
echo "------------------------------------------------------------"
uname -a
echo
inxi -b
echo
echo "### PCI / NVME DEVICE"
echo "------------------------------------------------------------"
lspci -nn | grep -Ei 'non-volatile|nvme'
echo
echo "PCIe Link:"
sudo lspci -vv -s 04:00.0 | grep -E 'LnkCap|LnkSta'
echo
echo "### NVME LIST"
echo "------------------------------------------------------------"
if command -v nvme >/dev/null 2>&1; then
sudo nvme list
echo
sudo nvme id-ctrl /dev/nvme0 | grep -E '^(mn|sn|fr|vid|ssvid|ieee|oacs|oncs|vwc)'
echo
sudo nvme smart-log /dev/nvme0
else
echo "nvme-cli ist NICHT installiert."
echo "Installiere es vorher mit:"
echo "sudo pacman -S nvme-cli"
fi
echo
echo "### BLOCK DEVICES"
echo "------------------------------------------------------------"
lsblk -o NAME,KNAME,TYPE,FSTYPE,SIZE,FSAVAIL,FSUSE%,MOUNTPOINTS
echo
echo "### MOUNT OPTIONS"
echo "------------------------------------------------------------"
findmnt -no SOURCE,FSTYPE,OPTIONS /
echo
findmnt -t btrfs
echo
echo "### BTRFS FILESYSTEM USAGE"
echo "------------------------------------------------------------"
sudo btrfs filesystem usage /
echo
echo "### BTRFS FILESYSTEM DF"
echo "------------------------------------------------------------"
sudo btrfs filesystem df /
echo
echo "### BTRFS SUBVOLUMES"
echo "------------------------------------------------------------"
sudo btrfs subvolume list -p /
echo
echo "### BTRFS FEATURES"
echo "------------------------------------------------------------"
sudo btrfs inspect-internal dump-super -f /dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a 2>/dev/null | \
grep -E '^(magic|generation|compat_flags|compat_ro_flags|incompat_flags|csum_type|metadata_uuid)' | head -30
echo
echo "### LUKS"
echo "------------------------------------------------------------"
sudo cryptsetup status luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a
echo
sudo cryptsetup luksDump /dev/nvme0n1p2 | \
grep -E 'Version|PBKDF|Cipher|Mode|Sector size|Integrity|Hash|af stripes|Keyslots|Tokens' | head -80
echo
echo "### DEVICE MAPPER"
echo "------------------------------------------------------------"
sudo dmsetup table
echo
echo "### IO SCHEDULER"
echo "------------------------------------------------------------"
for d in /sys/block/nvme*/queue/scheduler; do
echo "$d:"
cat "$d"
done
echo
echo "### QUEUE PARAMETERS"
echo "------------------------------------------------------------"
for p in nr_requests io_poll io_poll_delay max_sectors_kb max_hw_sectors_kb read_ahead_kb rotational nomerges; do
f="/sys/block/nvme0n1/queue/$p"
if [ -f "$f" ]; then
printf "%-22s " "$p:"
cat "$f"
fi
done
echo
echo "### CPU AES / CRYPTO"
echo "------------------------------------------------------------"
grep -m1 -oE 'aes' /proc/cpuinfo | head -1 || true
echo
lsmod | grep -E 'crypt|aes|xts'
echo
echo "### KERNEL BTRFS / NVME MESSAGES"
echo "------------------------------------------------------------"
sudo dmesg | grep -Ei 'btrfs|nvme|dm-crypt|crypt|I/O error|timeout|reset' | tail -200
echo
echo "### CURRENT DISK STATS"
echo "------------------------------------------------------------"
cat /proc/diskstats | grep -E 'nvme0n1|dm-0'
echo
echo "============================================================"
echo " BENCHMARKS"
echo "============================================================"
echo
echo "Die folgenden Tests schreiben Testdaten nach ~/nvme-diagnose-test"
echo "und löschen sie danach."
echo
TESTDIR="$HOME/nvme-diagnose-test"
mkdir -p "$TESTDIR"
echo "### TEST 1: BUFFERED WRITE"
echo "------------------------------------------------------------"
sync
/usr/bin/time -f 'Zeit: %E' \
dd if=/dev/zero \
of="$TESTDIR/buffered-test" \
bs=1M count=8192 \
status=progress \
conv=fdatasync
echo
rm -f "$TESTDIR/buffered-test"
sync
echo
if command -v fio >/dev/null 2>&1; then
echo "### TEST 2: FIO BUFFERED WRITE"
echo "------------------------------------------------------------"
fio \
--name=buffered \
--filename="$TESTDIR/fio-buffered" \
--size=8G \
--bs=1M \
--rw=write \
--iodepth=32 \
--direct=0 \
--runtime=20 \
--time_based \
--group_reporting
echo
rm -f "$TESTDIR/fio-buffered"
sync
echo
echo "### TEST 3: FIO DIRECT WRITE / NORMAL COW"
echo "------------------------------------------------------------"
fio \
--name=direct-cow \
--filename="$TESTDIR/fio-direct-cow" \
--size=8G \
--bs=1M \
--rw=write \
--iodepth=8 \
--direct=1 \
--runtime=20 \
--time_based \
--group_reporting
echo
rm -f "$TESTDIR/fio-direct-cow"
sync
echo
echo "### TEST 4: FIO DIRECT WRITE / NOCOW"
echo "------------------------------------------------------------"
NOCOWDIR="$HOME/nvme-diagnose-nocow"
mkdir -p "$NOCOWDIR"
# NOCOW muss gesetzt werden, bevor Dateien darin angelegt werden.
sudo chattr +C "$NOCOWDIR" 2>/dev/null || true
fio \
--name=direct-nocow \
--filename="$NOCOWDIR/fio-direct-nocow" \
--size=8G \
--bs=1M \
--rw=write \
--iodepth=8 \
--direct=1 \
--runtime=20 \
--time_based \
--group_reporting
echo
rm -f "$NOCOWDIR/fio-direct-nocow"
rmdir "$NOCOWDIR" 2>/dev/null || true
sync
else
echo "fio ist NICHT installiert."
fi
echo
echo "### TESTDATEIEN AUFRÄUMEN"
echo "------------------------------------------------------------"
rm -rf "$TESTDIR"
echo
echo "============================================================"
echo " FERTIG"
echo "============================================================"
echo
echo "Ausgabedatei:"
echo "$OUT"
echo
echo "Dateigröße:"
ls -lh "$OUT"
Hier das zweite (nvme-diagnose-2.sh):
#!/bin/bash
set -u
OUT="$HOME/nvme-final-test-$(date +%Y%m%d-%H%M%S).txt"
exec > >(tee "$OUT") 2>&1
TESTDIR="$HOME/nvme-final-test"
echo "============================================================"
echo " NVMe FINAL PERFORMANCE TEST"
echo " $(date)"
echo "============================================================"
echo
echo "### SYSTEM"
echo "------------------------------------------------------------"
uname -a
echo
echo "Mount:"
findmnt -no SOURCE,FSTYPE,OPTIONS /
echo
echo "Scheduler:"
cat /sys/block/nvme0n1/queue/scheduler
echo
echo "### NVME"
echo "------------------------------------------------------------"
sudo nvme smart-log /dev/nvme0 | grep -E \
'temperature|percentage_used|media_errors|controller_busy_time'
echo
echo "### LUKS"
echo "------------------------------------------------------------"
sudo cryptsetup status luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a
echo
rm -rf "$TESTDIR"
mkdir -p "$TESTDIR"
echo "============================================================"
echo " TEST 1: BUFFERED + COW + INCOMPRESSIBLE"
echo "============================================================"
echo
fio \
--name=cow-buffered \
--filename="$TESTDIR/cow-buffered" \
--size=16G \
--bs=1M \
--rw=write \
--ioengine=io_uring \
--iodepth=32 \
--direct=0 \
--refill_buffers=1 \
--randrepeat=0 \
--runtime=30 \
--time_based \
--group_reporting
rm -f "$TESTDIR/cow-buffered"
sync
echo
echo "============================================================"
echo " TEST 2: DIRECT + COW + INCOMPRESSIBLE"
echo "============================================================"
echo
fio \
--name=cow-direct \
--filename="$TESTDIR/cow-direct" \
--size=16G \
--bs=1M \
--rw=write \
--ioengine=io_uring \
--iodepth=32 \
--direct=1 \
--refill_buffers=1 \
--randrepeat=0 \
--runtime=30 \
--time_based \
--group_reporting
rm -f "$TESTDIR/cow-direct"
sync
echo
echo "============================================================"
echo " TEST 3: DIRECT + NOCOW + INCOMPRESSIBLE"
echo "============================================================"
echo
NOCOWDIR="$HOME/nvme-final-nocow"
rm -rf "$NOCOWDIR"
mkdir -p "$NOCOWDIR"
sudo chattr +C "$NOCOWDIR"
lsattr -d "$NOCOWDIR"
fio \
--name=nocow-direct \
--filename="$NOCOWDIR/nocow-direct" \
--size=16G \
--bs=1M \
--rw=write \
--ioengine=io_uring \
--iodepth=32 \
--direct=1 \
--refill_buffers=1 \
--randrepeat=0 \
--runtime=30 \
--time_based \
--group_reporting
rm -f "$NOCOWDIR/nocow-direct"
rmdir "$NOCOWDIR"
echo
echo "============================================================"
echo " TEST 4: DIRECT + NOCOW + Q1"
echo "============================================================"
echo
NOCOWDIR="$HOME/nvme-final-nocow-q1"
rm -rf "$NOCOWDIR"
mkdir -p "$NOCOWDIR"
sudo chattr +C "$NOCOWDIR"
fio \
--name=nocow-q1 \
--filename="$NOCOWDIR/nocow-q1" \
--size=8G \
--bs=1M \
--rw=write \
--ioengine=io_uring \
--iodepth=1 \
--direct=1 \
--refill_buffers=1 \
--randrepeat=0 \
--runtime=20 \
--time_based \
--group_reporting
rm -f "$NOCOWDIR/nocow-q1"
rmdir "$NOCOWDIR"
echo
echo "============================================================"
echo " TEST 5: DIRECT + COW + Q1"
echo "============================================================"
echo
fio \
--name=cow-q1 \
--filename="$TESTDIR/cow-q1" \
--size=8G \
--bs=1M \
--rw=write \
--ioengine=io_uring \
--iodepth=1 \
--direct=1 \
--refill_buffers=1 \
--randrepeat=0 \
--runtime=20 \
--time_based \
--group_reporting
rm -f "$TESTDIR/cow-q1"
echo
echo "============================================================"
echo " TEST 6: SCHEDULER = NONE / NOCOW"
echo "============================================================"
echo
echo "Vorher:"
cat /sys/block/nvme0n1/queue/scheduler
echo none | sudo tee /sys/block/nvme0n1/queue/scheduler
echo "Nachher:"
cat /sys/block/nvme0n1/queue/scheduler
NOCOWDIR="$HOME/nvme-final-scheduler"
rm -rf "$NOCOWDIR"
mkdir -p "$NOCOWDIR"
sudo chattr +C "$NOCOWDIR"
fio \
--name=scheduler-none \
--filename="$NOCOWDIR/test" \
--size=16G \
--bs=1M \
--rw=write \
--ioengine=io_uring \
--iodepth=32 \
--direct=1 \
--refill_buffers=1 \
--randrepeat=0 \
--runtime=30 \
--time_based \
--group_reporting
rm -rf "$NOCOWDIR"
echo
echo "============================================================"
echo " AUFRÄUMEN"
echo "============================================================"
rm -rf "$TESTDIR"
echo
echo "============================================================"
echo " FERTIG"
echo "============================================================"
echo
echo "Ausgabe:"
echo "$OUT"
Das ist die Auswertung vom ersten Script:
============================================================
NVMe / LUKS / BTRFS DIAGNOSE
Sa 15. Aug 10:33:08 CEST 2026
============================================================
### SYSTEM
------------------------------------------------------------
Linux grid 7.1.8-1-cachyos #1 SMP PREEMPT_DYNAMIC Mon, 10 Aug 2026 19:39:40 +0000 x86_64 GNU/Linux
System:
Host: grid Kernel: 7.1.8-1-cachyos arch: x86_64 bits: 64
Desktop: KDE Plasma v: 6.7.4 Distro: CachyOS
Machine:
Type: Desktop Mobo: Micro-Star model: MAG X870 TOMAHAWK WIFI (MS-7E51)
v: 1.0 serial: <superuser required> Firmware: UEFI vendor: American
Megatrends LLC. v: 1.A91 date: 06/04/2026
CPU:
Info: 16-core AMD Ryzen 9 9950X [MT MCP] speed (MHz): avg: 624
min/max: 624/5756
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Navi 48 [Radeon RX 9070/9070
XT/9070 GRE] driver: amdgpu v: kernel
Device-2: Advanced Micro Devices [AMD/ATI] Granite Ridge [Radeon Graphics]
driver: amdgpu v: kernel
Display: wayland server: Xwayland v: 24.1.13 compositor: kwin_wayland
driver: gpu: amdgpu resolution: 2560x1440~144Hz
API: OpenGL v: 4.6 vendor: amd mesa v: 26.1.6-arch3.1 renderer: AMD
Radeon RX 9070 XT (radeonsi gfx1201 ACO DRM 3.64 7.1.8-1-cachyos)
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
de: kscreen-console,kscreen-doctor wl: wayland-info x11: xdpyinfo,xprop
Network:
Device-1: Qualcomm WCN785x Wi-Fi 7 320MHz 2x2 [FastConnect 7800]
driver: ath12k_wifi7_pci
Device-2: Realtek RTL8126 5GbE driver: r8169
Drives:
Local Storage: total: 1.86 TiB used: 24.86 GiB (1.3%)
Info:
Memory: total: 60 GiB note: est. available: 60.23 GiB used: 4.29 GiB (7.1%)
Processes: 617 Uptime: 36m Shell: nvme-diagnose.s inxi: 3.3.41
### PCI / NVME DEVICE
------------------------------------------------------------
04:00.0 Non-Volatile memory controller [0108]: Shenzhen Longsys Electronics Co., Ltd. Lexar NM1090 PRO NVMe SSD [1d97:2508] (rev 03)
PCIe Link:
LnkCap: Port #0, Speed 32GT/s, Width x4, ASPM L1, Exit Latency L1 unlimited
LnkSta: Speed 32GT/s, Width x4
LnkCap2: Supported Link Speeds: 2.5-32GT/s, Crosslink- Retimer+ 2Retimers+ DRS+
LnkSta2: Current De-emphasis Level: -3.5dB, EqualizationComplete+ EqualizationPhase1+
### NVME LIST
------------------------------------------------------------
Node Generic SN Model Namespace Usage Format FW Rev
--------------------- --------------------- -------------------- ---------------------------------------- ---------- -------------------------- ---------------- --------
/dev/nvme0n1 /dev/ng0n1 QG4464R002718P3200 Lexar SSD NM1090 PRO 2TB 0x1 2.05 TB / 2.05 TB 4 KiB + 0 B Y0527A00
vid : 0x1d97
ssvid : 0x1d97
sn : QG4464R002718P3200
mn : Lexar SSD NM1090 PRO 2TB
fr : Y0527A00
ieee : caf25b
vwci : 255
oacs : 0x17
frmw : 0x14
mntmt : 273
oncs : 0xd7
vwc : 0x7
mnan : 0
mnsudmq : 0
Smart Log for NVME device:nvme0 namespace-id:ffffffff
critical_warning : 0
temperature : 43 °C (316 K, 109 °F)
available_spare : 100%
available_spare_threshold : 10%
percentage_used : 0%
endurance group critical warning summary: 0
Data Units Read : 119860 (61.37 GB)
Data Units Written : 740797 (379.29 GB)
host_read_commands : 2251634
host_write_commands : 5300973
controller_busy_time : 10
power_cycles : 13
power_on_hours : 16
unsafe_shutdowns : 7
media_errors : 0
num_err_log_entries : 0
Warning Temperature Time : 0
Critical Composite Temperature Time : 0
Temperature Sensor 1 : 47 °C (320 K, 116 °F)
Temperature Sensor 2 : 43 °C (316 K, 109 °F)
Thermal Management T1 Trans Count : 0
Thermal Management T2 Trans Count : 0
Thermal Management T1 Total Time : 0
Thermal Management T2 Total Time : 0
### BLOCK DEVICES
------------------------------------------------------------
NAME KNAME TYPE FSTYPE SIZE FSAVAIL FSUSE% MOUNTPOINTS
zram0 zram0 disk swap 60,2G [SWAP]
nvme0n1 nvme0n1 disk 1,9T
├─nvme0n1p1 nvme0n1p1 part vfat 4G 3,4G 14% /boot
└─nvme0n1p2 nvme0n1p2 part crypto_LUKS 1,9T
└─luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a dm-0 crypt btrfs 1,9T 1,8T 1% /var/tmp
/var/log
/home
/var/cache
/srv
/root
/
### MOUNT OPTIONS
------------------------------------------------------------
/dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a[/@] btrfs rw,noatime,compress=zstd:1,ssd,space_cache=v2,subvolid=256,subvol=/@
TARGET SOURCE FSTYPE OPTIONS
/ /dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a[/@] btrfs rw,noatime,compress=zstd:1,ssd,space_cache=v2,subvolid=256,subvol=/@
├─/root /dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a[/@root] btrfs rw,noatime,compress=zstd:1,ssd,space_cache=v2,subvolid=258,subvol=/@root
├─/home /dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a[/@home] btrfs rw,noatime,compress=zstd:1,ssd,space_cache=v2,subvolid=257,subvol=/@home
├─/srv /dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a[/@srv] btrfs rw,noatime,compress=zstd:1,ssd,space_cache=v2,subvolid=259,subvol=/@srv
├─/var/cache /dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a[/@cache] btrfs rw,noatime,compress=zstd:1,ssd,space_cache=v2,subvolid=260,subvol=/@cache
├─/var/log /dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a[/@log] btrfs rw,noatime,compress=zstd:1,ssd,space_cache=v2,subvolid=262,subvol=/@log
└─/var/tmp /dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a[/@tmp] btrfs rw,noatime,compress=zstd:1,ssd,space_cache=v2,subvolid=261,subvol=/@tmp
### BTRFS FILESYSTEM USAGE
------------------------------------------------------------
Overall:
Device size: 1.86TiB
Device allocated: 35.02GiB
Device unallocated: 1.82TiB
Device missing: 0.00B
Device slack: 0.00B
Used: 24.22GiB
Free (estimated): 1.83TiB (min: 944.52GiB)
Free (statfs, df): 1.83TiB
Data ratio: 1.00
Metadata ratio: 2.00
Global reserve: 71.12MiB (used: 0.00B)
Multiple profiles: no
Data,single: Size:33.01GiB, Used:22.83GiB (69.18%)
/dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a 33.01GiB
Metadata,DUP: Size:1.00GiB, Used:708.34MiB (69.17%)
/dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a 2.00GiB
System,DUP: Size:8.00MiB, Used:16.00KiB (0.20%)
/dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a 16.00MiB
Unallocated:
/dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a 1.82TiB
### BTRFS FILESYSTEM DF
------------------------------------------------------------
Data, single: total=33.01GiB, used=22.83GiB
System, DUP: total=8.00MiB, used=16.00KiB
Metadata, DUP: total=1.00GiB, used=708.34MiB
GlobalReserve, single: total=71.12MiB, used=0.00B
### BTRFS SUBVOLUMES
------------------------------------------------------------
ID 256 gen 1774 parent 5 top level 5 path @
ID 257 gen 1775 parent 5 top level 5 path @home
ID 258 gen 26 parent 5 top level 5 path @root
ID 259 gen 24 parent 5 top level 5 path @srv
ID 260 gen 1762 parent 5 top level 5 path @cache
ID 261 gen 1735 parent 5 top level 5 path @tmp
ID 262 gen 1775 parent 5 top level 5 path @log
ID 263 gen 26 parent 256 top level 256 path var/lib/portables
ID 264 gen 26 parent 256 top level 256 path var/lib/machines
ID 265 gen 1762 parent 256 top level 256 path .snapshots
ID 271 gen 34 parent 265 top level 265 path .snapshots/6/snapshot
ID 294 gen 162 parent 265 top level 265 path .snapshots/29/snapshot
ID 295 gen 163 parent 265 top level 265 path .snapshots/30/snapshot
ID 296 gen 172 parent 265 top level 265 path .snapshots/31/snapshot
ID 297 gen 173 parent 265 top level 265 path .snapshots/32/snapshot
ID 298 gen 177 parent 265 top level 265 path .snapshots/33/snapshot
ID 299 gen 178 parent 265 top level 265 path .snapshots/34/snapshot
ID 300 gen 189 parent 265 top level 265 path .snapshots/35/snapshot
ID 301 gen 190 parent 265 top level 265 path .snapshots/36/snapshot
ID 302 gen 194 parent 265 top level 265 path .snapshots/37/snapshot
ID 303 gen 195 parent 265 top level 265 path .snapshots/38/snapshot
ID 304 gen 594 parent 265 top level 265 path .snapshots/39/snapshot
ID 305 gen 595 parent 265 top level 265 path .snapshots/40/snapshot
ID 306 gen 636 parent 265 top level 265 path .snapshots/41/snapshot
ID 307 gen 637 parent 265 top level 265 path .snapshots/42/snapshot
ID 308 gen 646 parent 265 top level 265 path .snapshots/43/snapshot
ID 309 gen 647 parent 265 top level 265 path .snapshots/44/snapshot
ID 310 gen 653 parent 265 top level 265 path .snapshots/45/snapshot
ID 311 gen 654 parent 265 top level 265 path .snapshots/46/snapshot
ID 312 gen 697 parent 265 top level 265 path .snapshots/47/snapshot
ID 313 gen 698 parent 265 top level 265 path .snapshots/48/snapshot
ID 314 gen 734 parent 265 top level 265 path .snapshots/49/snapshot
ID 315 gen 735 parent 265 top level 265 path .snapshots/50/snapshot
ID 316 gen 946 parent 265 top level 265 path .snapshots/51/snapshot
ID 317 gen 948 parent 265 top level 265 path .snapshots/52/snapshot
ID 318 gen 950 parent 265 top level 265 path .snapshots/53/snapshot
ID 319 gen 951 parent 265 top level 265 path .snapshots/54/snapshot
ID 320 gen 953 parent 265 top level 265 path .snapshots/55/snapshot
ID 321 gen 954 parent 265 top level 265 path .snapshots/56/snapshot
ID 322 gen 1009 parent 265 top level 265 path .snapshots/57/snapshot
ID 323 gen 1010 parent 265 top level 265 path .snapshots/58/snapshot
ID 324 gen 1016 parent 265 top level 265 path .snapshots/59/snapshot
ID 325 gen 1017 parent 265 top level 265 path .snapshots/60/snapshot
ID 326 gen 1019 parent 265 top level 265 path .snapshots/61/snapshot
ID 327 gen 1020 parent 265 top level 265 path .snapshots/62/snapshot
ID 328 gen 1180 parent 265 top level 265 path .snapshots/63/snapshot
ID 329 gen 1182 parent 265 top level 265 path .snapshots/64/snapshot
ID 330 gen 1191 parent 265 top level 265 path .snapshots/65/snapshot
ID 331 gen 1192 parent 265 top level 265 path .snapshots/66/snapshot
ID 332 gen 1270 parent 265 top level 265 path .snapshots/67/snapshot
ID 333 gen 1271 parent 265 top level 265 path .snapshots/68/snapshot
ID 334 gen 1273 parent 265 top level 265 path .snapshots/69/snapshot
ID 335 gen 1274 parent 265 top level 265 path .snapshots/70/snapshot
ID 336 gen 1278 parent 265 top level 265 path .snapshots/71/snapshot
ID 337 gen 1279 parent 265 top level 265 path .snapshots/72/snapshot
ID 338 gen 1329 parent 265 top level 265 path .snapshots/73/snapshot
ID 339 gen 1331 parent 265 top level 265 path .snapshots/74/snapshot
ID 340 gen 1396 parent 265 top level 265 path .snapshots/75/snapshot
ID 341 gen 1397 parent 265 top level 265 path .snapshots/76/snapshot
ID 342 gen 1684 parent 265 top level 265 path .snapshots/77/snapshot
ID 343 gen 1686 parent 265 top level 265 path .snapshots/78/snapshot
ID 344 gen 1716 parent 265 top level 265 path .snapshots/79/snapshot
ID 345 gen 1717 parent 265 top level 265 path .snapshots/80/snapshot
ID 346 gen 1759 parent 265 top level 265 path .snapshots/81/snapshot
ID 347 gen 1760 parent 265 top level 265 path .snapshots/82/snapshot
### BTRFS FEATURES
------------------------------------------------------------
csum_type 0 (crc32c)
magic _BHRfS_M [match]
metadata_uuid 00000000-0000-0000-0000-000000000000
generation 1775
compat_flags 0x0
compat_ro_flags 0xb
incompat_flags 0x371
### LUKS
------------------------------------------------------------
/dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a is active and is in use.
type: LUKS2
cipher: aes-xts-plain64
keysize: 512 [bits]
key location: keyring
device: /dev/nvme0n1p2
sector size: 4096 [bytes]
offset: 32768 [512-byte units] (16777216 [bytes])
size: 3992371360 [512-byte units] (2044094136320 [bytes])
mode: read/write
Version: 2
Keyslots area: 16744448 [bytes]
Keyslots:
Cipher: aes-xts-plain64
Cipher key: 512 bits
PBKDF: argon2id
Tokens:
Hash: sha512
### DEVICE MAPPER
------------------------------------------------------------
luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a: 0 3992371360 crypt aes-xts-plain64 :64:logon:cryptsetup:c2f02faf-0b5e-4566-9ee8-68ad612f098a-d0 0 259:2 32768 1 sector_size:4096
### IO SCHEDULER
------------------------------------------------------------
/sys/block/nvme0n1/queue/scheduler:
none mq-deadline [kyber] adios bfq
### QUEUE PARAMETERS
------------------------------------------------------------
nr_requests: 256
io_poll: 0
io_poll_delay: -1
max_sectors_kb: 128
max_hw_sectors_kb: 128
read_ahead_kb: 256
rotational: 0
nomerges: 0
### CPU AES / CRYPTO
------------------------------------------------------------
aes
crypto_user 12288 0
dm_crypt 65536 1
encrypted_keys 28672 1 dm_crypt
trusted 40960 2 encrypted_keys,dm_crypt
dm_mod 237568 3 dm_crypt
aesni_intel 106496 2
gf128mul 16384 1 aesni_intel
aead 16384 3 dm_crypt,mac80211,aesni_intel
### KERNEL BTRFS / NVME MESSAGES
------------------------------------------------------------
[ 0.689120] x86/amd: Previous system reset reason [0x00080800]: software wrote 0x6 to reset control register 0xCF9
[ 0.695537] Key type .fscrypt registered
[ 0.695537] Key type fscrypt-provisioning registered
[ 0.695651] Btrfs loaded, zoned=yes, fsverity=yes
[ 2.771511] Freeing unused decrypted memory: 2028K
[ 3.139523] systemd[1]: systemd 261.2-1-arch running in system mode (+PAM +AUDIT -SELINUX +APPARMOR -IMA +IPE +SMACK +SECCOMP +GCRYPT +GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 +KMOD +LIBCRYPTSETUP +LIBCRYPTSETUP_PLUGINS +LIBFDISK +PCRE2 +PWQUALITY +P11KIT +QRENCODE +TPM2 +BZIP2 +LZ4 +XZ +ZLIB +ZSTD +BPF_FRAMEWORK +BTF +XKBCOMMON +UTMP +LIBARCHIVE)
[ 3.167815] systemd[1]: Created slice Slice /system/systemd-cryptsetup.
[ 3.320524] nvme 0000:04:00.0: platform quirk: setting simple suspend
[ 3.320583] nvme nvme0: pci function 0000:04:00.0
[ 3.347390] nvme nvme0: passthrough uses implicit buffer lengths
[ 3.390971] nvme nvme0: 32/0/0 default/read/poll queues
[ 3.408633] nvme0n1: p1 p2
[ 5.231997] amdgpu 0000:03:00.0: [drm] REG_WAIT timeout 1us * 150000 tries - optc401_disable_crtc line:237
[ 5.781873] amdgpu 0000:03:00.0: [drm] REG_WAIT timeout 1us * 150000 tries - optc401_disable_crtc line:237
[ 16.113826] Key type encrypted registered
[ 16.161993] BTRFS: device fsid 79088576-026a-4251-a8c6-e0b6079d1122 devid 1 transid 1691 /dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a (253:0) scanned by mount (825)
[ 16.162716] BTRFS info (device dm-0): first mount of filesystem 79088576-026a-4251-a8c6-e0b6079d1122
[ 16.162720] BTRFS info (device dm-0): using crc32c checksum algorithm
[ 16.165733] BTRFS info (device dm-0): enabling ssd optimizations
[ 16.165734] BTRFS info (device dm-0): enabling free space tree
[ 16.990858] systemd[1]: systemd 261.2-1-arch running in system mode (+PAM +AUDIT -SELINUX +APPARMOR -IMA +IPE +SMACK +SECCOMP +GCRYPT +GNUTLS +OPENSSL +ACL +BLKID +CURL +ELFUTILS +FIDO2 +IDN2 +KMOD +LIBCRYPTSETUP +LIBCRYPTSETUP_PLUGINS +LIBFDISK +PCRE2 +PWQUALITY +P11KIT +QRENCODE +TPM2 +BZIP2 +LZ4 +XZ +ZLIB +ZSTD +BPF_FRAMEWORK +BTF +XKBCOMMON +UTMP +LIBARCHIVE)
[ 17.202700] systemd[1]: Listening on Credential Encryption/Decryption.
[ 17.203009] systemd[1]: Listening on Factory Reset Management.
[ 17.227867] systemd[1]: Reached target Local Encrypted Volumes.
[ 17.275438] BTRFS info (device dm-0 state M): use zstd compression, level 1
[ 37.749314] block nvme0n1: No UUID available providing old NGUID
### CURRENT DISK STATS
------------------------------------------------------------
259 0 nvme0n1 179902 6586 29690376 116761 2342758 12096 589871272 568193 0 88087 685544 0 0 0 0 1009 589
259 1 nvme0n1p1 5436 123 1240800 1130 130 1 7176 9 0 269 1139 0 0 0 0 0 0
259 2 nvme0n1p2 174354 6463 28445888 115611 2342623 12095 589864096 568183 0 100686 683795 0 0 0 0 0 0
253 0 dm-0 180742 0 28444072 128420 2354713 0 589864096 3044658 0 104474 3173078 0 0 0 0 0 0
============================================================
BENCHMARKS
============================================================
Die folgenden Tests schreiben Testdaten nach ~/nvme-diagnose-test
und löschen sie danach.
### TEST 1: BUFFERED WRITE
------------------------------------------------------------
./nvme-diagnose.sh: Zeile 139: /usr/bin/time: Datei oder Verzeichnis nicht gefunden
### TEST 2: FIO BUFFERED WRITE
------------------------------------------------------------
buffered: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=32
fio-3.42
Starting 1 process
buffered: Laying out IO file (1 file / 8192MiB)
note: both iodepth >= 1 and synchronous I/O engine are selected, queue depth will be capped at 1
buffered: (groupid=0, jobs=1): err= 0: pid=9128: Sat Aug 15 10:33:31 2026
write: IOPS=3642, BW=3643MiB/s (3819MB/s)(71.1GiB/20001msec)
clat (usec): min=111, max=10930, avg=241.29, stdev=252.51
lat (usec): min=113, max=10938, avg=244.49, stdev=253.28
clat percentiles (usec):
| 1.00th=[ 124], 5.00th=[ 129], 10.00th=[ 131], 20.00th=[ 135],
| 30.00th=[ 139], 40.00th=[ 143], 50.00th=[ 149], 60.00th=[ 163],
| 70.00th=[ 225], 80.00th=[ 249], 90.00th=[ 529], 95.00th=[ 668],
| 99.00th=[ 1106], 99.50th=[ 1352], 99.90th=[ 3982], 99.95th=[ 4015],
| 99.99th=[ 5407]
bw ( MiB/s): min= 1282, max= 4536, per=100.00%, avg=3642.70, stdev=901.42, samples=40
iops : min= 1282, max= 4536, avg=3642.70, stdev=901.42, samples=40
lat (usec) : 250=80.05%, 500=9.38%, 750=7.35%, 1000=1.89%
lat (msec) : 2=1.19%, 4=0.09%, 10=0.04%, 20=0.01%
cpu : usr=1.60%, sys=96.18%, ctx=966, majf=0, minf=9
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=0,72854,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0.00ns, window=0.00ns, percentile=100.00%, depth=32
Run status group 0 (all jobs):
WRITE: bw=3643MiB/s (3819MB/s), 3643MiB/s-3643MiB/s (3819MB/s-3819MB/s), io=71.1GiB (76.4GB), run=20001-20001msec
### TEST 3: FIO DIRECT WRITE / NORMAL COW
------------------------------------------------------------
direct-cow: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=8
fio-3.42
Starting 1 process
direct-cow: Laying out IO file (1 file / 8192MiB)
note: both iodepth >= 1 and synchronous I/O engine are selected, queue depth will be capped at 1
direct-cow: (groupid=0, jobs=1): err= 0: pid=9165: Sat Aug 15 10:33:51 2026
write: IOPS=2746, BW=2747MiB/s (2880MB/s)(53.7GiB/20001msec)
clat (usec): min=330, max=7399, avg=361.05, stdev=159.64
lat (usec): min=333, max=7402, avg=363.81, stdev=159.66
clat percentiles (usec):
| 1.00th=[ 343], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 351],
| 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 355], 60.00th=[ 355],
| 70.00th=[ 355], 80.00th=[ 359], 90.00th=[ 363], 95.00th=[ 375],
| 99.00th=[ 400], 99.50th=[ 416], 99.90th=[ 2442], 99.95th=[ 5604],
| 99.99th=[ 5997]
bw ( MiB/s): min= 2594, max= 2812, per=100.00%, avg=2747.05, stdev=34.97, samples=40
iops : min= 2594, max= 2812, avg=2747.05, stdev=34.97, samples=40
lat (usec) : 500=99.73%, 750=0.09%, 1000=0.01%
lat (msec) : 2=0.01%, 4=0.09%, 10=0.07%
cpu : usr=1.15%, sys=63.69%, ctx=925786, majf=0, minf=8
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=0,54941,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0.00ns, window=0.00ns, percentile=100.00%, depth=8
Run status group 0 (all jobs):
WRITE: bw=2747MiB/s (2880MB/s), 2747MiB/s-2747MiB/s (2880MB/s-2880MB/s), io=53.7GiB (57.6GB), run=20001-20001msec
### TEST 4: FIO DIRECT WRITE / NOCOW
------------------------------------------------------------
direct-nocow: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=8
fio-3.42
Starting 1 process
direct-nocow: Laying out IO file (1 file / 8192MiB)
note: both iodepth >= 1 and synchronous I/O engine are selected, queue depth will be capped at 1
direct-nocow: (groupid=0, jobs=1): err= 0: pid=9211: Sat Aug 15 10:34:12 2026
write: IOPS=7953, BW=7954MiB/s (8340MB/s)(155GiB/20001msec)
clat (usec): min=90, max=7756, avg=114.47, stdev=153.45
lat (usec): min=97, max=7767, avg=125.51, stdev=153.46
clat percentiles (usec):
| 1.00th=[ 99], 5.00th=[ 104], 10.00th=[ 105], 20.00th=[ 106],
| 30.00th=[ 108], 40.00th=[ 109], 50.00th=[ 110], 60.00th=[ 110],
| 70.00th=[ 111], 80.00th=[ 115], 90.00th=[ 117], 95.00th=[ 119],
| 99.00th=[ 130], 99.50th=[ 143], 99.90th=[ 375], 99.95th=[ 5473],
| 99.99th=[ 5800]
bw ( MiB/s): min= 7848, max= 8170, per=100.00%, avg=7954.35, stdev=61.17, samples=40
iops : min= 7848, max= 8170, avg=7954.35, stdev=61.17, samples=40
lat (usec) : 100=1.63%, 250=98.08%, 500=0.20%, 750=0.01%, 1000=0.01%
lat (msec) : 2=0.01%, 10=0.07%
cpu : usr=9.02%, sys=5.41%, ctx=159530, majf=0, minf=8
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=0,159087,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0.00ns, window=0.00ns, percentile=100.00%, depth=8
Run status group 0 (all jobs):
WRITE: bw=7954MiB/s (8340MB/s), 7954MiB/s-7954MiB/s (8340MB/s-8340MB/s), io=155GiB (167GB), run=20001-20001msec
### TESTDATEIEN AUFRÄUMEN
------------------------------------------------------------
============================================================
FERTIG
============================================================
Das ist die Auswertung vom zweiten Script:
============================================================
NVMe FINAL PERFORMANCE TEST
Sa 15. Aug 10:39:48 CEST 2026
============================================================
### SYSTEM
------------------------------------------------------------
Linux grid 7.1.8-1-cachyos #1 SMP PREEMPT_DYNAMIC Mon, 10 Aug 2026 19:39:40 +0000 x86_64 GNU/Linux
Mount:
/dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a[/@] btrfs rw,noatime,compress=zstd:1,ssd,space_cache=v2,subvolid=256,subvol=/@
Scheduler:
none mq-deadline [kyber] adios bfq
### NVME
------------------------------------------------------------
temperature : 43 °C (316 K, 109 °F)
percentage_used : 0%
controller_busy_time : 11
media_errors : 0
### LUKS
------------------------------------------------------------
/dev/mapper/luks-c2f02faf-0b5e-4566-9ee8-68ad612f098a is active and is in use.
type: LUKS2
cipher: aes-xts-plain64
keysize: 512 [bits]
key location: keyring
device: /dev/nvme0n1p2
sector size: 4096 [bytes]
offset: 32768 [512-byte units] (16777216 [bytes])
size: 3992371360 [512-byte units] (2044094136320 [bytes])
mode: read/write
============================================================
TEST 1: BUFFERED + COW + INCOMPRESSIBLE
============================================================
cow-buffered: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=io_uring, iodepth=32
fio-3.42
Starting 1 process
cow-buffered: Laying out IO file (1 file / 16384MiB)
cow-buffered: (groupid=0, jobs=1): err= 0: pid=9568: Sat Aug 15 10:40:23 2026
write: IOPS=3282, BW=3283MiB/s (3442MB/s)(96.2GiB/30010msec)
slat (nsec): min=440, max=2229.1k, avg=20254.96, stdev=79587.78
clat (nsec): min=190, max=567152k, avg=9637806.01, stdev=24557561.69
lat (usec): min=161, max=567152, avg=9658.06, stdev=24556.41
clat percentiles (msec):
| 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7],
| 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 8], 60.00th=[ 9],
| 70.00th=[ 10], 80.00th=[ 11], 90.00th=[ 13], 95.00th=[ 14],
| 99.00th=[ 16], 99.50th=[ 17], 99.90th=[ 558], 99.95th=[ 558],
| 99.99th=[ 567]
bw ( MiB/s): min= 408, max= 4060, per=100.00%, avg=3395.70, stdev=897.42, samples=58
iops : min= 408, max= 4060, avg=3395.69, stdev=897.42, samples=58
lat (nsec) : 250=0.01%
lat (usec) : 2=0.01%, 4=0.01%, 1000=0.01%
lat (msec) : 2=0.06%, 4=0.11%, 10=73.28%, 20=26.32%, 50=0.01%
lat (msec) : 500=0.03%, 750=0.19%
cpu : usr=18.19%, sys=17.84%, ctx=92310, majf=0, minf=8
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=100.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.1%, 64=0.0%, >=64=0.0%
issued rwts: total=0,98510,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0.00ns, window=0.00ns, percentile=100.00%, depth=32
Run status group 0 (all jobs):
WRITE: bw=3283MiB/s (3442MB/s), 3283MiB/s-3283MiB/s (3442MB/s-3442MB/s), io=96.2GiB (103GB), run=30010-30010msec
============================================================
TEST 2: DIRECT + COW + INCOMPRESSIBLE
============================================================
cow-direct: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=io_uring, iodepth=32
fio-3.42
Starting 1 process
cow-direct: Laying out IO file (1 file / 16384MiB)
cow-direct: (groupid=0, jobs=1): err= 0: pid=9662: Sat Aug 15 10:40:54 2026
write: IOPS=2576, BW=2577MiB/s (2702MB/s)(75.5GiB/30012msec)
slat (nsec): min=360, max=267191, avg=967.07, stdev=1496.79
clat (usec): min=749, max=23516, avg=12388.97, stdev=1022.52
lat (usec): min=783, max=23517, avg=12389.94, stdev=1022.57
clat percentiles (usec):
| 1.00th=[11731], 5.00th=[11731], 10.00th=[11863], 20.00th=[11994],
| 30.00th=[11994], 40.00th=[11994], 50.00th=[12125], 60.00th=[12125],
| 70.00th=[12256], 80.00th=[12387], 90.00th=[13173], 95.00th=[13829],
| 99.00th=[17695], 99.50th=[18220], 99.90th=[19530], 99.95th=[21103],
| 99.99th=[21627]
bw ( MiB/s): min= 2404, max= 2680, per=100.00%, avg=2576.90, stdev=54.28, samples=60
iops : min= 2404, max= 2680, avg=2576.90, stdev=54.28, samples=60
lat (usec) : 750=0.01%
lat (msec) : 2=0.01%, 4=0.01%, 10=0.02%, 20=99.91%, 50=0.05%
cpu : usr=7.31%, sys=0.25%, ctx=77478, majf=0, minf=8
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=100.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.1%, 64=0.0%, >=64=0.0%
issued rwts: total=0,77338,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0.00ns, window=0.00ns, percentile=100.00%, depth=32
Run status group 0 (all jobs):
WRITE: bw=2577MiB/s (2702MB/s), 2577MiB/s-2577MiB/s (2702MB/s-2702MB/s), io=75.5GiB (81.1GB), run=30012-30012msec
============================================================
TEST 3: DIRECT + NOCOW + INCOMPRESSIBLE
============================================================
---------------C------ /home/USER/nvme-final-nocow
nocow-direct: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=io_uring, iodepth=32
fio-3.42
Starting 1 process
nocow-direct: Laying out IO file (1 file / 16384MiB)
nocow-direct: (groupid=0, jobs=1): err= 0: pid=9729: Sat Aug 15 10:41:24 2026
write: IOPS=12.9k, BW=12.6GiB/s (13.5GB/s)(377GiB/30002msec)
slat (usec): min=3, max=316, avg= 9.77, stdev= 4.63
clat (usec): min=1019, max=14846, avg=2413.61, stdev=878.50
lat (usec): min=1027, max=14855, avg=2423.38, stdev=878.54
clat percentiles (usec):
| 1.00th=[ 1532], 5.00th=[ 1860], 10.00th=[ 1975], 20.00th=[ 2089],
| 30.00th=[ 2180], 40.00th=[ 2212], 50.00th=[ 2245], 60.00th=[ 2278],
| 70.00th=[ 2311], 80.00th=[ 2474], 90.00th=[ 2769], 95.00th=[ 3097],
| 99.00th=[ 7308], 99.50th=[ 8094], 99.90th=[ 9634], 99.95th=[10290],
| 99.99th=[11731]
bw ( MiB/s): min=12686, max=13032, per=100.00%, avg=12867.97, stdev=79.97, samples=59
iops : min=12686, max=13032, avg=12868.00, stdev=79.94, samples=59
lat (msec) : 2=12.13%, 4=85.02%, 10=2.77%, 20=0.07%
cpu : usr=81.26%, sys=12.55%, ctx=12854, majf=0, minf=7
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=100.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.1%, 64=0.0%, >=64=0.0%
issued rwts: total=0,386036,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0.00ns, window=0.00ns, percentile=100.00%, depth=32
Run status group 0 (all jobs):
WRITE: bw=12.6GiB/s (13.5GB/s), 12.6GiB/s-12.6GiB/s (13.5GB/s-13.5GB/s), io=377GiB (405GB), run=30002-30002msec
============================================================
TEST 4: DIRECT + NOCOW + Q1
============================================================
nocow-q1: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=io_uring, iodepth=1
fio-3.42
Starting 1 process
nocow-q1: Laying out IO file (1 file / 8192MiB)
nocow-q1: (groupid=0, jobs=1): err= 0: pid=9782: Sat Aug 15 10:41:45 2026
write: IOPS=4909, BW=4910MiB/s (5148MB/s)(95.9GiB/20001msec)
slat (usec): min=9, max=265, avg=16.39, stdev= 5.20
clat (usec): min=97, max=8598, avg=140.23, stdev=176.42
lat (usec): min=114, max=8611, avg=156.62, stdev=176.73
clat percentiles (usec):
| 1.00th=[ 113], 5.00th=[ 115], 10.00th=[ 116], 20.00th=[ 117],
| 30.00th=[ 118], 40.00th=[ 119], 50.00th=[ 120], 60.00th=[ 121],
| 70.00th=[ 127], 80.00th=[ 128], 90.00th=[ 131], 95.00th=[ 285],
| 99.00th=[ 297], 99.50th=[ 302], 99.90th=[ 2180], 99.95th=[ 5669],
| 99.99th=[ 6063]
bw ( MiB/s): min= 4348, max= 5274, per=100.00%, avg=4910.05, stdev=293.02, samples=40
iops : min= 4348, max= 5274, avg=4910.05, stdev=293.02, samples=40
lat (usec) : 100=0.01%, 250=91.82%, 500=8.00%, 750=0.01%, 1000=0.01%
lat (msec) : 2=0.02%, 4=0.09%, 10=0.07%
cpu : usr=21.84%, sys=9.80%, ctx=98343, majf=0, minf=5
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=0,98201,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0.00ns, window=0.00ns, percentile=100.00%, depth=1
Run status group 0 (all jobs):
WRITE: bw=4910MiB/s (5148MB/s), 4910MiB/s-4910MiB/s (5148MB/s-5148MB/s), io=95.9GiB (103GB), run=20001-20001msec
============================================================
TEST 5: DIRECT + COW + Q1
============================================================
cow-q1: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=io_uring, iodepth=1
fio-3.42
Starting 1 process
cow-q1: Laying out IO file (1 file / 8192MiB)
cow-q1: (groupid=0, jobs=1): err= 0: pid=9832: Sat Aug 15 10:42:05 2026
write: IOPS=2537, BW=2537MiB/s (2661MB/s)(49.6GiB/20001msec)
slat (nsec): min=370, max=38740, avg=662.77, stdev=316.61
clat (usec): min=336, max=8555, avg=375.06, stdev=167.48
lat (usec): min=337, max=8556, avg=375.73, stdev=167.51
clat percentiles (usec):
| 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 359], 20.00th=[ 359],
| 30.00th=[ 359], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 363],
| 70.00th=[ 363], 80.00th=[ 367], 90.00th=[ 388], 95.00th=[ 424],
| 99.00th=[ 494], 99.50th=[ 529], 99.90th=[ 2180], 99.95th=[ 5800],
| 99.99th=[ 6128]
bw ( MiB/s): min= 2032, max= 2612, per=100.00%, avg=2542.15, stdev=117.11, samples=39
iops : min= 2032, max= 2612, avg=2542.15, stdev=117.11, samples=39
lat (usec) : 500=99.08%, 750=0.74%, 1000=0.01%
lat (msec) : 2=0.01%, 4=0.09%, 10=0.07%
cpu : usr=4.77%, sys=0.24%, ctx=50805, majf=0, minf=7
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=0,50750,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0.00ns, window=0.00ns, percentile=100.00%, depth=1
Run status group 0 (all jobs):
WRITE: bw=2537MiB/s (2661MB/s), 2537MiB/s-2537MiB/s (2661MB/s-2661MB/s), io=49.6GiB (53.2GB), run=20001-20001msec
============================================================
TEST 6: SCHEDULER = NONE / NOCOW
============================================================
Vorher:
none mq-deadline [kyber] adios bfq
none
Nachher:
[none] mq-deadline kyber adios bfq
scheduler-none: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=io_uring, iodepth=32
fio-3.42
Starting 1 process
scheduler-none: Laying out IO file (1 file / 16384MiB)
scheduler-none: (groupid=0, jobs=1): err= 0: pid=9888: Sat Aug 15 10:42:35 2026
write: IOPS=12.9k, BW=12.6GiB/s (13.5GB/s)(377GiB/30003msec)
slat (usec): min=3, max=307, avg=10.04, stdev= 4.68
clat (usec): min=1347, max=10325, avg=2413.44, stdev=770.63
lat (usec): min=1354, max=10336, avg=2423.48, stdev=770.63
clat percentiles (usec):
| 1.00th=[ 1762], 5.00th=[ 1926], 10.00th=[ 2024], 20.00th=[ 2180],
| 30.00th=[ 2212], 40.00th=[ 2245], 50.00th=[ 2278], 60.00th=[ 2278],
| 70.00th=[ 2311], 80.00th=[ 2442], 90.00th=[ 2737], 95.00th=[ 2999],
| 99.00th=[ 7046], 99.50th=[ 7308], 99.90th=[ 8291], 99.95th=[ 8848],
| 99.99th=[ 9241]
bw ( MiB/s): min=12682, max=13044, per=100.00%, avg=12864.80, stdev=77.24, samples=60
iops : min=12682, max=13044, avg=12864.80, stdev=77.24, samples=60
lat (msec) : 2=8.64%, 4=89.01%, 10=2.35%, 20=0.01%
cpu : usr=82.35%, sys=12.72%, ctx=3014, majf=0, minf=5
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=100.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.1%, 64=0.0%, >=64=0.0%
issued rwts: total=0,385944,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0.00ns, window=0.00ns, percentile=100.00%, depth=32
Run status group 0 (all jobs):
WRITE: bw=12.6GiB/s (13.5GB/s), 12.6GiB/s-12.6GiB/s (13.5GB/s-13.5GB/s), io=377GiB (405GB), run=30003-30003msec
============================================================
AUFRÄUMEN
============================================================
Ihr könnt die beiden Scripts ja mal bei euch testen und das Eregbnis hier posten.
Um es gleich zu sagen: Meine Hardware funktioniert einwandfrei.
„Es ist Btrfs, es war schon immer Btrfs!“





