== sanity test 398b: DIO and buffer IO race ============== 17:30:00 (1788730200) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.78375 s, 18.1 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=180376: Sun Sep 6 17:30:58 2026 read: IOPS=31, BW=126KiB/s (129kB/s)(5992KiB/47389msec) clat (usec): min=39, max=680064, avg=17287.12, stdev=19400.81 lat (usec): min=39, max=680065, avg=17288.49, stdev=19400.69 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 6587], 10.00th=[ 7963], 20.00th=[ 9896], | 30.00th=[ 11469], 40.00th=[ 13304], 50.00th=[ 15270], 60.00th=[ 17695], | 70.00th=[ 19530], 80.00th=[ 22414], 90.00th=[ 27657], 95.00th=[ 34341], | 99.00th=[ 47973], 99.50th=[ 57410], 99.90th=[ 77071], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 6, max= 208, per=25.50%, avg=126.24, stdev=33.90, samples=94 iops : min= 1, max= 52, avg=31.21, stdev= 8.52, samples=94 write: IOPS=33, BW=133KiB/s (136kB/s)(6296KiB/47389msec); 0 zone resets clat (usec): min=775, max=117265, avg=13520.14, stdev=10950.89 lat (usec): min=775, max=117266, avg=13521.11, stdev=10950.91 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1991], 10.00th=[ 2507], 20.00th=[ 3130], | 30.00th=[ 5800], 40.00th=[ 9110], 50.00th=[ 11338], 60.00th=[ 13829], | 70.00th=[ 17171], 80.00th=[ 21627], 90.00th=[ 27657], 95.00th=[ 33817], | 99.00th=[ 47973], 99.50th=[ 54264], 99.90th=[ 73925], 99.95th=[116917], | 99.99th=[116917] bw ( KiB/s): min= 64, max= 216, per=25.91%, avg=134.24, stdev=33.62, samples=93 iops : min= 16, max= 54, avg=33.22, stdev= 8.45, samples=93 lat (usec) : 50=0.10%, 100=0.49%, 250=0.75%, 500=0.03%, 1000=0.33% lat (msec) : 2=2.28%, 4=10.09%, 10=18.62%, 20=41.67%, 50=24.93% lat (msec) : 100=0.65%, 250=0.03%, 750=0.03% cpu : usr=0.11%, sys=21.85%, ctx=8115, majf=0, minf=16 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=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180377: Sun Sep 6 17:30:58 2026 read: IOPS=30, BW=124KiB/s (127kB/s)(5940KiB/47929msec) clat (usec): min=51, max=83215, avg=16918.41, stdev=8809.86 lat (usec): min=52, max=83215, avg=16921.04, stdev=8810.10 clat percentiles (usec): | 1.00th=[ 121], 5.00th=[ 7111], 10.00th=[ 8291], 20.00th=[ 9896], | 30.00th=[11469], 40.00th=[13173], 50.00th=[15270], 60.00th=[17695], | 70.00th=[20317], 80.00th=[22414], 90.00th=[27132], 95.00th=[31589], | 99.00th=[47449], 99.50th=[56361], 99.90th=[76022], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 6, max= 184, per=25.03%, avg=123.88, stdev=33.36, samples=95 iops : min= 1, max= 46, avg=30.62, stdev= 8.42, samples=95 write: IOPS=33, BW=132KiB/s (136kB/s)(6348KiB/47929msec); 0 zone resets clat (usec): min=678, max=675106, avg=14242.03, stdev=20168.62 lat (usec): min=679, max=675107, avg=14243.14, stdev=20168.64 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1975], 10.00th=[ 2409], 20.00th=[ 3130], | 30.00th=[ 5342], 40.00th=[ 8848], 50.00th=[ 11338], 60.00th=[ 13698], | 70.00th=[ 17171], 80.00th=[ 22938], 90.00th=[ 30016], 95.00th=[ 35914], | 99.00th=[ 49021], 99.50th=[ 58459], 99.90th=[ 78119], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 55, max= 239, per=25.78%, avg=133.55, stdev=33.92, samples=94 iops : min= 13, max= 59, avg=33.04, stdev= 8.47, samples=94 lat (usec) : 100=0.29%, 250=0.46%, 750=0.10%, 1000=0.33% lat (msec) : 2=2.21%, 4=10.94%, 10=18.72%, 20=39.52%, 50=26.53% lat (msec) : 100=0.88%, 750=0.03% cpu : usr=0.12%, sys=21.32%, ctx=8195, majf=0, minf=17 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=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180378: Sun Sep 6 17:30:58 2026 read: IOPS=31, BW=126KiB/s (129kB/s)(6028KiB/47939msec) clat (usec): min=42, max=85214, avg=16851.41, stdev=9085.74 lat (usec): min=42, max=85215, avg=16852.26, stdev=9085.80 clat percentiles (usec): | 1.00th=[ 118], 5.00th=[ 6849], 10.00th=[ 8160], 20.00th=[ 9765], | 30.00th=[11207], 40.00th=[13042], 50.00th=[15139], 60.00th=[17433], | 70.00th=[19792], 80.00th=[22676], 90.00th=[27919], 95.00th=[32900], | 99.00th=[46400], 99.50th=[52691], 99.90th=[79168], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 48, max= 200, per=25.68%, avg=127.10, stdev=31.16, samples=94 iops : min= 12, max= 50, avg=31.43, stdev= 7.78, samples=94 write: IOPS=32, BW=131KiB/s (134kB/s)(6260KiB/47939msec); 0 zone resets clat (usec): min=612, max=714194, avg=14271.63, stdev=20651.36 lat (usec): min=613, max=714196, avg=14272.67, stdev=20651.38 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1975], 10.00th=[ 2507], 20.00th=[ 3425], | 30.00th=[ 6849], 40.00th=[ 9503], 50.00th=[ 11731], 60.00th=[ 14091], | 70.00th=[ 17695], 80.00th=[ 22414], 90.00th=[ 28443], 95.00th=[ 33817], | 99.00th=[ 47973], 99.50th=[ 53740], 99.90th=[ 83362], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 63, max= 224, per=25.43%, avg=131.70, stdev=33.33, samples=94 iops : min= 15, max= 56, avg=32.57, stdev= 8.39, samples=94 lat (usec) : 50=0.07%, 100=0.23%, 250=0.52%, 750=0.07%, 1000=0.29% lat (msec) : 2=2.38%, 4=8.98%, 10=19.53%, 20=41.50%, 50=25.78% lat (msec) : 100=0.62%, 750=0.03% cpu : usr=0.11%, sys=21.70%, ctx=8181, majf=0, minf=15 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=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180379: Sun Sep 6 17:30:58 2026 read: IOPS=31, BW=125KiB/s (128kB/s)(6052KiB/48455msec) clat (usec): min=33, max=98437, avg=17257.11, stdev=9371.92 lat (usec): min=34, max=98438, avg=17258.25, stdev=9372.52 clat percentiles (usec): | 1.00th=[ 123], 5.00th=[ 6849], 10.00th=[ 8225], 20.00th=[ 9896], | 30.00th=[11600], 40.00th=[13698], 50.00th=[15795], 60.00th=[17695], | 70.00th=[20055], 80.00th=[22938], 90.00th=[28443], 95.00th=[34341], | 99.00th=[51119], 99.50th=[58459], 99.90th=[79168], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 55, max= 192, per=25.37%, avg=125.59, stdev=29.46, samples=95 iops : min= 13, max= 48, avg=31.04, stdev= 7.41, samples=95 write: IOPS=32, BW=129KiB/s (132kB/s)(6236KiB/48455msec); 0 zone resets clat (usec): min=584, max=702667, avg=14200.81, stdev=20788.53 lat (usec): min=584, max=702668, avg=14201.82, stdev=20788.55 clat percentiles (usec): | 1.00th=[ 971], 5.00th=[ 1991], 10.00th=[ 2474], 20.00th=[ 3195], | 30.00th=[ 5932], 40.00th=[ 8979], 50.00th=[ 11469], 60.00th=[ 13960], | 70.00th=[ 17957], 80.00th=[ 22152], 90.00th=[ 28967], 95.00th=[ 34866], | 99.00th=[ 47973], 99.50th=[ 58459], 99.90th=[124257], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 19, max= 216, per=24.77%, avg=128.29, stdev=35.75, samples=96 iops : min= 4, max= 54, avg=31.72, stdev= 8.95, samples=96 lat (usec) : 50=0.07%, 100=0.16%, 250=0.62%, 750=0.20%, 1000=0.39% lat (msec) : 2=2.02%, 4=10.16%, 10=18.95%, 20=40.46%, 50=25.98% lat (msec) : 100=0.94%, 250=0.03%, 750=0.03% cpu : usr=0.13%, sys=21.28%, ctx=8322, majf=0, minf=16 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=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=496KiB/s (507kB/s), 124KiB/s-126KiB/s (127kB/s-129kB/s), io=23.4MiB (24.6MB), run=47389-48455msec WRITE: bw=519KiB/s (531kB/s), 129KiB/s-133KiB/s (132kB/s-136kB/s), io=24.6MiB (25.7MB), run=47389-48455msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180381: Sun Sep 6 17:31:06 2026 read: IOPS=26, BW=106KiB/s (109kB/s)(5992KiB/56390msec) clat (msec): min=3, max=686, avg=15.87, stdev=21.82 lat (msec): min=3, max=686, avg=15.87, stdev=21.82 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 36], 95.00th=[ 44], | 99.00th=[ 63], 99.50th=[ 73], 99.90th=[ 90], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 39, max= 328, per=25.11%, avg=106.72, stdev=68.87, samples=111 iops : min= 9, max= 82, avg=26.34, stdev=17.33, samples=111 write: IOPS=27, BW=112KiB/s (114kB/s)(6296KiB/56390msec); 0 zone resets clat (msec): min=4, max=138, avg=20.62, stdev=14.28 lat (msec): min=4, max=138, avg=20.62, stdev=14.28 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 25], 80.00th=[ 31], 90.00th=[ 40], 95.00th=[ 49], | 99.00th=[ 69], 99.50th=[ 77], 99.90th=[ 108], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 32, max= 336, per=25.23%, avg=112.25, stdev=69.87, samples=111 iops : min= 8, max= 84, avg=27.73, stdev=17.56, samples=111 lat (msec) : 4=1.99%, 10=35.06%, 20=30.27%, 50=29.04%, 100=3.55% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.13%, sys=9.33%, ctx=4918, majf=0, minf=13 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=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180382: Sun Sep 6 17:31:06 2026 read: IOPS=26, BW=106KiB/s (109kB/s)(5940KiB/55966msec) clat (msec): min=2, max=711, avg=15.62, stdev=21.90 lat (msec): min=2, max=711, avg=15.62, stdev=21.90 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 23], 90.00th=[ 34], 95.00th=[ 43], | 99.00th=[ 60], 99.50th=[ 63], 99.90th=[ 92], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 15, max= 320, per=25.08%, avg=106.59, stdev=64.84, samples=110 iops : min= 3, max= 80, avg=26.32, stdev=16.34, samples=110 write: IOPS=28, BW=113KiB/s (116kB/s)(6348KiB/55966msec); 0 zone resets clat (msec): min=4, max=139, avg=20.55, stdev=13.70 lat (msec): min=4, max=139, avg=20.55, stdev=13.70 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 31], 90.00th=[ 39], 95.00th=[ 46], | 99.00th=[ 67], 99.50th=[ 75], 99.90th=[ 102], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 47, max= 336, per=25.51%, avg=113.50, stdev=65.31, samples=110 iops : min= 11, max= 84, avg=28.05, stdev=16.44, samples=110 lat (msec) : 4=2.15%, 10=33.14%, 20=32.29%, 50=29.36%, 100=2.96% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.12%, sys=9.54%, ctx=4980, majf=0, minf=13 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=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180383: Sun Sep 6 17:31:06 2026 read: IOPS=26, BW=107KiB/s (109kB/s)(6028KiB/56382msec) clat (usec): min=2550, max=71399, avg=15277.99, stdev=12590.54 lat (usec): min=2550, max=71400, avg=15278.87, stdev=12590.53 clat percentiles (usec): | 1.00th=[ 3261], 5.00th=[ 4080], 10.00th=[ 4621], 20.00th=[ 5800], | 30.00th=[ 7177], 40.00th=[ 8848], 50.00th=[10683], 60.00th=[12911], | 70.00th=[16909], 80.00th=[22938], 90.00th=[34341], 95.00th=[42206], | 99.00th=[58459], 99.50th=[61604], 99.90th=[68682], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 24, max= 344, per=25.31%, avg=107.58, stdev=68.37, samples=111 iops : min= 6, max= 86, avg=26.56, stdev=17.18, samples=111 write: IOPS=27, BW=111KiB/s (114kB/s)(6260KiB/56382msec); 0 zone resets clat (msec): min=4, max=706, avg=21.22, stdev=22.35 lat (msec): min=4, max=706, avg=21.22, stdev=22.35 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 32], 90.00th=[ 40], 95.00th=[ 48], | 99.00th=[ 65], 99.50th=[ 83], 99.90th=[ 126], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 32, max= 319, per=25.05%, avg=111.47, stdev=67.65, samples=111 iops : min= 8, max= 79, avg=27.53, stdev=17.01, samples=111 lat (msec) : 4=2.21%, 10=34.02%, 20=30.66%, 50=29.72%, 100=3.26% lat (msec) : 250=0.10%, 750=0.03% cpu : usr=0.12%, sys=9.40%, ctx=4948, majf=0, minf=13 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=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180384: Sun Sep 6 17:31:06 2026 read: IOPS=26, BW=107KiB/s (110kB/s)(6052KiB/56317msec) clat (usec): min=2611, max=84824, avg=15516.13, stdev=12685.60 lat (usec): min=2612, max=84826, avg=15516.99, stdev=12685.61 clat percentiles (usec): | 1.00th=[ 3458], 5.00th=[ 4228], 10.00th=[ 4752], 20.00th=[ 5866], | 30.00th=[ 7177], 40.00th=[ 8979], 50.00th=[10945], 60.00th=[13566], | 70.00th=[17171], 80.00th=[24249], 90.00th=[33817], 95.00th=[42730], | 99.00th=[59507], 99.50th=[66323], 99.90th=[81265], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 23, max= 334, per=25.48%, avg=108.30, stdev=69.32, samples=111 iops : min= 5, max= 83, avg=26.74, stdev=17.45, samples=111 write: IOPS=27, BW=111KiB/s (113kB/s)(6236KiB/56317msec); 0 zone resets clat (msec): min=4, max=710, avg=20.97, stdev=22.41 lat (msec): min=4, max=710, avg=20.97, stdev=22.41 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 26], 80.00th=[ 32], 90.00th=[ 40], 95.00th=[ 49], | 99.00th=[ 70], 99.50th=[ 77], 99.90th=[ 101], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 47, max= 328, per=25.05%, avg=111.47, stdev=68.68, samples=111 iops : min= 11, max= 82, avg=27.53, stdev=17.26, samples=111 lat (msec) : 4=1.63%, 10=34.02%, 20=32.06%, 50=28.87%, 100=3.35% lat (msec) : 250=0.03%, 750=0.03% cpu : usr=0.10%, sys=9.38%, ctx=4889, majf=0, minf=12 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=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=426KiB/s (436kB/s), 106KiB/s-107KiB/s (109kB/s-110kB/s), io=23.4MiB (24.6MB), run=55966-56390msec WRITE: bw=446KiB/s (457kB/s), 111KiB/s-113KiB/s (113kB/s-116kB/s), io=24.6MiB (25.7MB), run=55966-56390msec mix direct rw 16384 by fio with 4 jobs... mix buffer rw 16384 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=180412: Sun Sep 6 17:31:25 2026 read: IOPS=26, BW=417KiB/s (427kB/s)(5920KiB/14211msec) clat (usec): min=40, max=72856, avg=19213.31, stdev=10834.42 lat (usec): min=40, max=72857, avg=19214.52, stdev=10834.17 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 123], 10.00th=[ 8291], 20.00th=[11731], | 30.00th=[13829], 40.00th=[15401], 50.00th=[17695], 60.00th=[20317], | 70.00th=[22152], 80.00th=[26608], 90.00th=[32113], 95.00th=[37487], | 99.00th=[55837], 99.50th=[65799], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 223, max= 736, per=24.56%, avg=413.79, stdev=102.43, samples=28 iops : min= 13, max= 46, avg=25.36, stdev= 6.41, samples=28 write: IOPS=28, BW=448KiB/s (459kB/s)(6368KiB/14211msec); 0 zone resets clat (usec): min=1046, max=61360, avg=17747.55, stdev=12658.22 lat (usec): min=1046, max=61361, avg=17758.26, stdev=12668.75 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 3064], 10.00th=[ 3916], 20.00th=[ 5407], | 30.00th=[ 9503], 40.00th=[12387], 50.00th=[15401], 60.00th=[18220], | 70.00th=[22414], 80.00th=[26608], 90.00th=[35390], 95.00th=[42206], | 99.00th=[55837], 99.50th=[58983], 99.90th=[61604], 99.95th=[61604], | 99.99th=[61604] bw ( KiB/s): min= 223, max= 736, per=25.20%, avg=446.82, stdev=125.60, samples=28 iops : min= 13, max= 46, avg=27.43, stdev= 7.99, samples=28 lat (usec) : 50=0.26%, 100=1.30%, 250=1.43% lat (msec) : 2=0.52%, 4=4.95%, 10=15.10%, 20=37.50%, 50=36.85% lat (msec) : 100=2.08% cpu : usr=0.09%, sys=23.50%, ctx=2315, majf=0, minf=13 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=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180413: Sun Sep 6 17:31:25 2026 read: IOPS=26, BW=419KiB/s (429kB/s)(5744KiB/13695msec) clat (usec): min=62, max=71675, avg=19303.44, stdev=10094.74 lat (usec): min=63, max=71676, avg=19304.13, stdev=10094.71 clat percentiles (usec): | 1.00th=[ 90], 5.00th=[ 5342], 10.00th=[ 9896], 20.00th=[11863], | 30.00th=[14091], 40.00th=[15664], 50.00th=[17957], 60.00th=[20317], | 70.00th=[22676], 80.00th=[25297], 90.00th=[32637], 95.00th=[37487], | 99.00th=[53740], 99.50th=[60556], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 191, max= 606, per=24.79%, avg=417.74, stdev=96.68, samples=27 iops : min= 11, max= 37, avg=25.59, stdev= 6.16, samples=27 write: IOPS=29, BW=478KiB/s (489kB/s)(6544KiB/13695msec); 0 zone resets clat (usec): min=1164, max=86563, avg=16402.99, stdev=12661.46 lat (usec): min=1165, max=86564, avg=16404.55, stdev=12661.55 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 3326], 10.00th=[ 3949], 20.00th=[ 5080], | 30.00th=[ 8094], 40.00th=[10945], 50.00th=[13304], 60.00th=[16712], | 70.00th=[19792], 80.00th=[24511], 90.00th=[34866], 95.00th=[40633], | 99.00th=[54789], 99.50th=[62653], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 286, max= 883, per=26.88%, avg=476.63, stdev=135.64, samples=27 iops : min= 17, max= 55, avg=29.30, stdev= 8.54, samples=27 lat (usec) : 100=0.91%, 250=1.30% lat (msec) : 2=0.78%, 4=4.82%, 10=16.28%, 20=40.89%, 50=33.07% lat (msec) : 100=1.95% cpu : usr=0.15%, sys=24.36%, ctx=2314, majf=0, minf=14 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=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180414: Sun Sep 6 17:31:25 2026 read: IOPS=27, BW=444KiB/s (455kB/s)(6256KiB/14081msec) clat (usec): min=65, max=104090, avg=19699.54, stdev=11097.48 lat (usec): min=65, max=104090, avg=19700.38, stdev=11097.51 clat percentiles (usec): | 1.00th=[ 93], 5.00th=[ 153], 10.00th=[ 9634], 20.00th=[ 12125], | 30.00th=[ 13829], 40.00th=[ 16319], 50.00th=[ 17957], 60.00th=[ 19792], | 70.00th=[ 23200], 80.00th=[ 26608], 90.00th=[ 32113], 95.00th=[ 41157], | 99.00th=[ 51643], 99.50th=[ 53740], 99.90th=[104334], 99.95th=[104334], | 99.99th=[104334] bw ( KiB/s): min= 287, max= 576, per=26.15%, avg=440.70, stdev=86.13, samples=27 iops : min= 17, max= 36, avg=27.04, stdev= 5.49, samples=27 write: IOPS=26, BW=428KiB/s (439kB/s)(6032KiB/14081msec); 0 zone resets clat (usec): min=1032, max=71924, avg=16686.24, stdev=11615.64 lat (usec): min=1033, max=71929, avg=16687.88, stdev=11615.71 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2868], 10.00th=[ 4080], 20.00th=[ 5669], | 30.00th=[ 8848], 40.00th=[11994], 50.00th=[14746], 60.00th=[17957], | 70.00th=[21890], 80.00th=[25297], 90.00th=[33424], 95.00th=[38011], | 99.00th=[52691], 99.50th=[60031], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 224, max= 638, per=23.35%, avg=414.07, stdev=107.40, samples=27 iops : min= 14, max= 39, avg=25.37, stdev= 6.68, samples=27 lat (usec) : 100=0.52%, 250=2.34% lat (msec) : 2=1.04%, 4=3.65%, 10=15.36%, 20=39.84%, 50=35.94% lat (msec) : 100=1.17%, 250=0.13% cpu : usr=0.07%, sys=23.84%, ctx=2501, majf=0, minf=12 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=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180415: Sun Sep 6 17:31:25 2026 read: IOPS=28, BW=457KiB/s (468kB/s)(6032KiB/13211msec) clat (usec): min=58, max=64651, avg=19072.10, stdev=10692.10 lat (usec): min=59, max=64652, avg=19072.87, stdev=10692.11 clat percentiles (usec): | 1.00th=[ 81], 5.00th=[ 115], 10.00th=[ 8586], 20.00th=[11469], | 30.00th=[13173], 40.00th=[14877], 50.00th=[17957], 60.00th=[20579], | 70.00th=[23462], 80.00th=[26346], 90.00th=[32375], 95.00th=[37487], | 99.00th=[54789], 99.50th=[62129], 99.90th=[64750], 99.95th=[64750], | 99.99th=[64750] bw ( KiB/s): min= 286, max= 631, per=27.03%, avg=455.50, stdev=100.01, samples=26 iops : min= 17, max= 39, avg=28.00, stdev= 6.29, samples=26 write: IOPS=29, BW=474KiB/s (485kB/s)(6256KiB/13211msec); 0 zone resets clat (usec): min=1230, max=56112, avg=15127.51, stdev=11141.71 lat (usec): min=1232, max=56115, avg=15128.98, stdev=11141.81 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 2606], 10.00th=[ 3621], 20.00th=[ 4752], | 30.00th=[ 6718], 40.00th=[10159], 50.00th=[12649], 60.00th=[15401], | 70.00th=[19268], 80.00th=[23462], 90.00th=[31851], 95.00th=[38011], | 99.00th=[46400], 99.50th=[49021], 99.90th=[56361], 99.95th=[56361], | 99.99th=[56361] bw ( KiB/s): min= 224, max= 734, per=26.85%, avg=476.00, stdev=120.00, samples=26 iops : min= 14, max= 45, avg=29.27, stdev= 7.51, samples=26 lat (usec) : 100=1.30%, 250=2.21% lat (msec) : 2=1.17%, 4=5.47%, 10=16.15%, 20=38.80%, 50=33.98% lat (msec) : 100=0.91% cpu : usr=0.10%, sys=24.51%, ctx=2318, majf=0, minf=12 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=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1685KiB/s (1726kB/s), 417KiB/s-457KiB/s (427kB/s-468kB/s), io=23.4MiB (24.5MB), run=13211-14211msec WRITE: bw=1773KiB/s (1816kB/s), 428KiB/s-478KiB/s (439kB/s-489kB/s), io=24.6MiB (25.8MB), run=13211-14211msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180408: Sun Sep 6 17:31:27 2026 read: IOPS=22, BW=362KiB/s (371kB/s)(5920KiB/16341msec) clat (usec): min=3037, max=74772, avg=17129.57, stdev=13840.97 lat (usec): min=3038, max=74773, avg=17130.53, stdev=13840.87 clat percentiles (usec): | 1.00th=[ 3884], 5.00th=[ 4686], 10.00th=[ 5473], 20.00th=[ 6652], | 30.00th=[ 8225], 40.00th=[10290], 50.00th=[12256], 60.00th=[14484], | 70.00th=[18220], 80.00th=[25822], 90.00th=[37487], 95.00th=[47973], | 99.00th=[62129], 99.50th=[72877], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 190, max= 992, per=23.84%, avg=349.19, stdev=205.02, samples=32 iops : min= 11, max= 62, avg=21.34, stdev=12.86, samples=32 write: IOPS=24, BW=390KiB/s (399kB/s)(6368KiB/16341msec); 0 zone resets clat (msec): min=5, max=106, avg=25.08, stdev=16.48 lat (msec): min=5, max=106, avg=25.08, stdev=16.48 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 37], 90.00th=[ 48], 95.00th=[ 57], | 99.00th=[ 83], 99.50th=[ 101], 99.90th=[ 107], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 160, max= 992, per=24.85%, avg=383.13, stdev=206.43, samples=32 iops : min= 10, max= 62, avg=23.47, stdev=12.90, samples=32 lat (msec) : 4=0.65%, 10=25.39%, 20=34.51%, 50=33.33%, 100=5.99% lat (msec) : 250=0.13% cpu : usr=0.07%, sys=9.49%, ctx=1307, majf=0, minf=14 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=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180409: Sun Sep 6 17:31:27 2026 read: IOPS=22, BW=356KiB/s (365kB/s)(5744KiB/16124msec) clat (usec): min=4058, max=79211, avg=17703.18, stdev=12572.91 lat (usec): min=4058, max=79212, avg=17704.07, stdev=12573.10 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 5604], 10.00th=[ 6587], 20.00th=[ 8586], | 30.00th=[10290], 40.00th=[11994], 50.00th=[13435], 60.00th=[15664], | 70.00th=[18744], 80.00th=[24773], 90.00th=[38011], 95.00th=[43254], | 99.00th=[62653], 99.50th=[70779], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 127, max= 830, per=23.88%, avg=349.90, stdev=153.68, samples=31 iops : min= 7, max= 51, avg=21.42, stdev= 9.72, samples=31 write: IOPS=25, BW=406KiB/s (416kB/s)(6544KiB/16124msec); 0 zone resets clat (usec): min=6068, max=89441, avg=23792.89, stdev=13935.52 lat (usec): min=6070, max=89442, avg=23794.60, stdev=13935.57 clat percentiles (usec): | 1.00th=[ 6915], 5.00th=[ 8848], 10.00th=[10028], 20.00th=[12256], | 30.00th=[14091], 40.00th=[16909], 50.00th=[19792], 60.00th=[23725], | 70.00th=[27919], 80.00th=[33817], 90.00th=[43779], 95.00th=[52167], | 99.00th=[66323], 99.50th=[77071], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 192, max= 1056, per=25.38%, avg=391.29, stdev=181.46, samples=31 iops : min= 12, max= 66, avg=24.00, stdev=11.37, samples=31 lat (msec) : 10=18.23%, 20=43.36%, 50=33.98%, 100=4.43% cpu : usr=0.09%, sys=10.22%, ctx=1318, majf=0, minf=13 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=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180410: Sun Sep 6 17:31:27 2026 read: IOPS=23, BW=384KiB/s (393kB/s)(6256KiB/16310msec) clat (usec): min=3566, max=78364, avg=17924.99, stdev=13933.42 lat (usec): min=3567, max=78364, avg=17925.91, stdev=13933.41 clat percentiles (usec): | 1.00th=[ 4490], 5.00th=[ 5211], 10.00th=[ 5866], 20.00th=[ 7439], | 30.00th=[ 9110], 40.00th=[10552], 50.00th=[12911], 60.00th=[15664], | 70.00th=[19792], 80.00th=[25035], 90.00th=[40633], 95.00th=[46924], | 99.00th=[63177], 99.50th=[78119], 99.90th=[78119], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 127, max= 1213, per=25.99%, avg=380.75, stdev=228.39, samples=32 iops : min= 7, max= 75, avg=23.34, stdev=14.26, samples=32 write: IOPS=23, BW=370KiB/s (379kB/s)(6032KiB/16310msec); 0 zone resets clat (usec): min=6324, max=97960, avg=24432.52, stdev=15624.47 lat (usec): min=6326, max=97961, avg=24436.48, stdev=15622.97 clat percentiles (usec): | 1.00th=[ 7111], 5.00th=[ 8291], 10.00th=[ 9503], 20.00th=[11207], | 30.00th=[13173], 40.00th=[15533], 50.00th=[20055], 60.00th=[25297], | 70.00th=[30016], 80.00th=[35914], 90.00th=[45876], 95.00th=[54789], | 99.00th=[71828], 99.50th=[88605], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 159, max= 896, per=23.45%, avg=361.63, stdev=182.02, samples=32 iops : min= 9, max= 56, avg=22.12, stdev=11.45, samples=32 lat (msec) : 4=0.13%, 10=23.96%, 20=36.46%, 50=33.46%, 100=5.99% cpu : usr=0.14%, sys=9.71%, ctx=1357, majf=0, minf=14 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=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180411: Sun Sep 6 17:31:27 2026 read: IOPS=23, BW=369KiB/s (378kB/s)(6032KiB/16331msec) clat (usec): min=3416, max=77439, avg=18215.22, stdev=14363.03 lat (usec): min=3417, max=77441, avg=18216.20, stdev=14363.01 clat percentiles (usec): | 1.00th=[ 4080], 5.00th=[ 5145], 10.00th=[ 5800], 20.00th=[ 7439], | 30.00th=[ 9110], 40.00th=[11076], 50.00th=[13304], 60.00th=[15533], | 70.00th=[19268], 80.00th=[26346], 90.00th=[41157], 95.00th=[50070], | 99.00th=[67634], 99.50th=[77071], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 95, max= 896, per=24.48%, avg=358.62, stdev=191.46, samples=32 iops : min= 5, max= 56, avg=21.94, stdev=12.05, samples=32 write: IOPS=23, BW=383KiB/s (392kB/s)(6256KiB/16331msec); 0 zone resets clat (msec): min=5, max=107, avg=23.91, stdev=15.59 lat (msec): min=5, max=107, avg=23.91, stdev=15.59 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 31], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 74], 99.50th=[ 82], 99.90th=[ 108], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 191, max= 864, per=24.41%, avg=376.44, stdev=193.09, samples=32 iops : min= 11, max= 54, avg=23.06, stdev=12.10, samples=32 lat (msec) : 4=0.26%, 10=23.31%, 20=40.10%, 50=30.21%, 100=5.99% lat (msec) : 250=0.13% cpu : usr=0.12%, sys=9.63%, ctx=1353, majf=0, minf=12 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=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1466KiB/s (1501kB/s), 356KiB/s-384KiB/s (365kB/s-393kB/s), io=23.4MiB (24.5MB), run=16124-16341msec WRITE: bw=1542KiB/s (1579kB/s), 370KiB/s-406KiB/s (379kB/s-416kB/s), io=24.6MiB (25.8MB), run=16124-16341msec mix direct rw 1048576 by fio with 4 jobs... mix buffer rw 1048576 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=180422: Sun Sep 6 17:31:36 2026 read: IOPS=3, BW=3526KiB/s (3610kB/s)(7168KiB/2033msec) clat (msec): min=39, max=742, avg=152.98, stdev=260.03 lat (msec): min=39, max=742, avg=152.98, stdev=260.03 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 40], 10.00th=[ 40], 20.00th=[ 40], | 30.00th=[ 53], 40.00th=[ 53], 50.00th=[ 63], 60.00th=[ 65], | 70.00th=[ 65], 80.00th=[ 70], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 4000, max= 5180, per=79.08%, avg=4590.00, stdev=834.39, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2518KiB/s (2579kB/s)(5120KiB/2033msec); 0 zone resets clat (msec): min=35, max=332, avg=187.30, stdev=135.83 lat (msec): min=35, max=333, avg=187.37, stdev=135.83 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 36], 10.00th=[ 36], 20.00th=[ 36], | 30.00th=[ 55], 40.00th=[ 55], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 1726, max= 1726, per=21.24%, avg=1726.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 50=25.00%, 100=41.67%, 250=8.33%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=14.71%, ctx=150, majf=0, minf=14 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=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180423: Sun Sep 6 17:31:36 2026 read: IOPS=0, BW=580KiB/s (594kB/s)(2048KiB/3528msec) clat (msec): min=78, max=114, avg=96.44, stdev=24.87 lat (msec): min=78, max=114, avg=96.44, stdev=24.86 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 80], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 80], 60.00th=[ 114], | 70.00th=[ 114], 80.00th=[ 114], 90.00th=[ 114], 95.00th=[ 114], | 99.00th=[ 114], 99.50th=[ 114], 99.90th=[ 114], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 1723, max= 2048, per=32.49%, avg=1885.50, stdev=229.81, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2902KiB/s (2972kB/s)(10.0MiB/3528msec); 0 zone resets clat (msec): min=66, max=741, avg=330.06, stdev=238.83 lat (msec): min=66, max=741, avg=330.12, stdev=238.84 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 70], | 30.00th=[ 138], 40.00th=[ 176], 50.00th=[ 266], 60.00th=[ 271], | 70.00th=[ 405], 80.00th=[ 550], 90.00th=[ 617], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 2048, max= 4096, per=38.49%, avg=3127.80, stdev=1016.36, samples=5 iops : min= 2, max= 4, avg= 2.80, stdev= 0.84, samples=5 lat (msec) : 100=25.00%, 250=25.00%, 500=25.00%, 750=25.00% cpu : usr=0.00%, sys=20.07%, ctx=216, majf=0, minf=13 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=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180424: Sun Sep 6 17:31:36 2026 read: IOPS=1, BW=1905KiB/s (1951kB/s)(6144KiB/3225msec) clat (msec): min=58, max=248, avg=156.69, stdev=83.75 lat (msec): min=58, max=248, avg=156.69, stdev=83.75 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 64], | 30.00th=[ 64], 40.00th=[ 136], 50.00th=[ 136], 60.00th=[ 207], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 249], 95.00th=[ 249], | 99.00th=[ 249], 99.50th=[ 249], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 2000, max= 4096, per=43.90%, avg=2548.00, stdev=1032.25, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.26, samples=4 write: IOPS=1, BW=1905KiB/s (1951kB/s)(6144KiB/3225msec); 0 zone resets clat (msec): min=55, max=1208, avg=378.85, stdev=431.34 lat (msec): min=56, max=1208, avg=379.07, stdev=431.20 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 56], 10.00th=[ 56], 20.00th=[ 85], | 30.00th=[ 85], 40.00th=[ 157], 50.00th=[ 157], 60.00th=[ 351], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 2000, max= 3442, per=28.52%, avg=2317.20, stdev=629.13, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 0.71, samples=5 lat (msec) : 100=33.33%, 250=41.67%, 500=16.67%, 2000=8.33% cpu : usr=0.00%, sys=10.67%, ctx=82, majf=0, minf=13 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=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180425: Sun Sep 6 17:31:36 2026 read: IOPS=1, BW=1484KiB/s (1520kB/s)(5120KiB/3449msec) clat (msec): min=53, max=245, avg=116.53, stdev=85.99 lat (msec): min=53, max=245, avg=116.54, stdev=85.99 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 54], | 30.00th=[ 58], 40.00th=[ 58], 50.00th=[ 61], 60.00th=[ 61], | 70.00th=[ 165], 80.00th=[ 165], 90.00th=[ 247], 95.00th=[ 247], | 99.00th=[ 247], 99.50th=[ 247], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2078KiB/s (2128kB/s)(7168KiB/3449msec); 0 zone resets clat (msec): min=70, max=1161, avg=403.25, stdev=405.18 lat (msec): min=70, max=1161, avg=403.33, stdev=405.17 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 88], | 30.00th=[ 88], 40.00th=[ 88], 50.00th=[ 288], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 693], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 1723, max= 4000, per=30.21%, avg=2454.75, stdev=1041.50, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 100=50.00%, 250=16.67%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.03%, sys=13.31%, ctx=137, majf=0, minf=15 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=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5805KiB/s (5944kB/s), 580KiB/s-3526KiB/s (594kB/s-3610kB/s), io=20.0MiB (20.0MB), run=2033-3528msec WRITE: bw=8127KiB/s (8322kB/s), 1905KiB/s-2902KiB/s (1951kB/s-2972kB/s), io=28.0MiB (29.4MB), run=2033-3528msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180427: Sun Sep 6 17:31:37 2026 read: IOPS=2, BW=2427KiB/s (2486kB/s)(7168KiB/2953msec) clat (usec): min=495, max=907833, avg=218705.25, stdev=326676.20 lat (usec): min=496, max=907834, avg=218706.21, stdev=326676.04 clat percentiles (usec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 537], | 30.00th=[ 586], 40.00th=[ 586], 50.00th=[128451], 60.00th=[166724], | 70.00th=[166724], 80.00th=[325059], 90.00th=[910164], 95.00th=[910164], | 99.00th=[910164], 99.50th=[910164], 99.90th=[910164], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 1732, max= 4096, per=57.70%, avg=3305.00, stdev=1362.27, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1734KiB/s (1775kB/s)(5120KiB/2953msec); 0 zone resets clat (msec): min=95, max=424, avg=268.80, stdev=126.43 lat (msec): min=95, max=424, avg=268.84, stdev=126.43 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 2031, max= 2043, per=25.40%, avg=2037.00, stdev= 8.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 1000=8.33% cpu : usr=0.00%, sys=33.16%, ctx=907, majf=0, minf=13 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=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180428: Sun Sep 6 17:31:37 2026 read: IOPS=0, BW=574KiB/s (587kB/s)(2048KiB/3571msec) clat (msec): min=67, max=116, avg=91.67, stdev=34.76 lat (msec): min=67, max=116, avg=91.68, stdev=34.76 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 67], | 30.00th=[ 67], 40.00th=[ 67], 50.00th=[ 67], 60.00th=[ 116], | 70.00th=[ 116], 80.00th=[ 116], 90.00th=[ 116], 95.00th=[ 116], | 99.00th=[ 116], 99.50th=[ 116], 99.90th=[ 116], 99.95th=[ 116], | 99.99th=[ 116] bw ( KiB/s): min= 1768, max= 2031, per=33.16%, avg=1899.50, stdev=185.97, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2868KiB/s (2936kB/s)(10.0MiB/3571msec); 0 zone resets clat (msec): min=79, max=1108, avg=329.99, stdev=309.80 lat (msec): min=79, max=1108, avg=330.06, stdev=309.79 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 87], | 30.00th=[ 128], 40.00th=[ 132], 50.00th=[ 255], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 388], 90.00th=[ 542], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 2031, max= 4096, per=44.61%, avg=3577.50, stdev=1031.01, samples=4 iops : min= 1, max= 4, avg= 3.00, stdev= 1.41, samples=4 lat (msec) : 100=25.00%, 250=25.00%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=36.81%, ctx=385, majf=0, minf=12 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=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180429: Sun Sep 6 17:31:37 2026 read: IOPS=1, BW=1819KiB/s (1862kB/s)(6144KiB/3378msec) clat (msec): min=19, max=183, avg=115.14, stdev=59.59 lat (msec): min=19, max=183, avg=115.14, stdev=59.59 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 20], 10.00th=[ 20], 20.00th=[ 75], | 30.00th=[ 75], 40.00th=[ 120], 50.00th=[ 120], 60.00th=[ 136], | 70.00th=[ 159], 80.00th=[ 159], 90.00th=[ 184], 95.00th=[ 184], | 99.00th=[ 184], 99.50th=[ 184], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 2048, max= 4096, per=59.40%, avg=3402.33, stdev=1173.00, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1819KiB/s (1862kB/s)(6144KiB/3378msec); 0 zone resets clat (msec): min=152, max=1185, avg=441.73, stdev=381.24 lat (msec): min=152, max=1185, avg=441.79, stdev=381.24 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 409], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 2031, max= 3401, per=29.69%, avg=2380.75, stdev=680.20, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 20=8.33%, 100=8.33%, 250=50.00%, 500=25.00%, 2000=8.33% cpu : usr=0.00%, sys=31.83%, ctx=704, majf=0, minf=10 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=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180430: Sun Sep 6 17:31:37 2026 read: IOPS=1, BW=1432KiB/s (1467kB/s)(5120KiB/3575msec) clat (usec): min=516, max=158877, avg=86600.67, stdev=79955.15 lat (usec): min=517, max=158877, avg=86601.71, stdev=79954.76 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 519], | 30.00th=[ 529], 40.00th=[ 529], 50.00th=[120062], 60.00th=[120062], | 70.00th=[152044], 80.00th=[152044], 90.00th=[158335], 95.00th=[158335], | 99.00th=[158335], 99.50th=[158335], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=2005KiB/s (2053kB/s)(7168KiB/3575msec); 0 zone resets clat (msec): min=104, max=1167, avg=438.70, stdev=350.29 lat (msec): min=104, max=1167, avg=438.76, stdev=350.29 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 192], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 380], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 527], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 1732, max= 2048, per=24.69%, avg=1980.40, stdev=139.03, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (usec) : 750=16.67% lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=29.97%, ctx=684, majf=0, minf=14 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=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5729KiB/s (5866kB/s), 574KiB/s-2427KiB/s (587kB/s-2486kB/s), io=20.0MiB (20.0MB), run=2953-3575msec WRITE: bw=8020KiB/s (8213kB/s), 1734KiB/s-2868KiB/s (1775kB/s-2936kB/s), io=28.0MiB (29.4MB), run=2953-3575msec mix direct rw 4194304 by fio with 4 jobs... mix buffer rw 4194304 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=180436: Sun Sep 6 17:31:45 2026 read: IOPS=2, BW=8950KiB/s (9165kB/s)(12.0MiB/1373msec) clat (msec): min=343, max=444, avg=406.17, stdev=55.06 lat (msec): min=343, max=444, avg=406.17, stdev=55.06 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 70.00th=[ 443], 80.00th=[ 443], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 5468, max= 8192, per=61.74%, avg=6830.00, stdev=1926.16, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=54.74%, ctx=2077, 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=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180437: Sun Sep 6 17:31:45 2026 read: IOPS=0, BW=2766KiB/s (2832kB/s)(4096KiB/1481msec) clat (nsec): min=338071k, max=338071k, avg=338070632.00, stdev= 0.00 lat (nsec): min=338072k, max=338072k, avg=338072004.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 5512, max= 5512, per=49.83%, avg=5512.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5531KiB/s (5664kB/s)(8192KiB/1481msec); 0 zone resets clat (msec): min=485, max=505, avg=495.30, stdev=13.97 lat (msec): min=485, max=505, avg=495.58, stdev=14.12 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 8192, max= 8192, per=44.18%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=21.69%, ctx=596, majf=0, minf=12 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=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180438: Sun Sep 6 17:31:45 2026 write: IOPS=2, BW=8214KiB/s (8411kB/s)(12.0MiB/1496msec); 0 zone resets clat (msec): min=380, max=484, avg=447.60, stdev=58.08 lat (msec): min=380, max=484, avg=447.92, stdev=58.11 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 477], 50.00th=[ 477], 60.00th=[ 477], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 5497, max= 8192, per=36.91%, avg=6844.50, stdev=1905.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=42.47%, ctx=119, 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=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180440: Sun Sep 6 17:31:45 2026 write: IOPS=1, BW=6954KiB/s (7121kB/s)(12.0MiB/1767msec); 0 zone resets clat (msec): min=241, max=1111, avg=536.49, stdev=498.23 lat (msec): min=242, max=1112, avg=536.80, stdev=498.21 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 257], 50.00th=[ 257], 60.00th=[ 257], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min=10966, max=10966, per=59.14%, avg=10966.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=18.91%, ctx=90, majf=0, minf=10 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=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=10.8MiB/s (11.3MB/s), 2766KiB/s-8950KiB/s (2832kB/s-9165kB/s), io=16.0MiB (16.8MB), run=1373-1481msec WRITE: bw=18.1MiB/s (18.0MB/s), 5531KiB/s-8214KiB/s (5664kB/s-8411kB/s), io=32.0MiB (33.6MB), run=1481-1767msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180441: Sun Sep 6 17:31:45 2026 read: IOPS=1, BW=6582KiB/s (6740kB/s)(12.0MiB/1867msec) clat (msec): min=179, max=1292, avg=584.71, stdev=614.88 lat (msec): min=179, max=1292, avg=584.71, stdev=614.88 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min=16351, max=16351, per=100.00%, avg=16351.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=14.90%, ctx=86, 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=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180442: Sun Sep 6 17:31:45 2026 read: IOPS=0, BW=2263KiB/s (2317kB/s)(4096KiB/1810msec) clat (nsec): min=1059.8M, max=1059.8M, avg=1059800708.00, stdev= 0.00 lat (nsec): min=1059.8M, max=1059.8M, avg=1059801628.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1062], 5.00th=[ 1062], 10.00th=[ 1062], 20.00th=[ 1062], | 30.00th=[ 1062], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8192, max= 8192, per=93.36%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4526KiB/s (4635kB/s)(8192KiB/1810msec); 0 zone resets clat (msec): min=302, max=369, avg=336.00, stdev=47.80 lat (msec): min=302, max=370, avg=336.28, stdev=47.81 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 372], 95.00th=[ 372], | 99.00th=[ 372], 99.50th=[ 372], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 8175, max= 8175, per=45.16%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.06%, sys=14.37%, ctx=73, majf=0, minf=11 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=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180443: Sun Sep 6 17:31:45 2026 write: IOPS=1, BW=7058KiB/s (7227kB/s)(12.0MiB/1741msec); 0 zone resets clat (msec): min=237, max=776, avg=542.57, stdev=276.26 lat (msec): min=238, max=776, avg=542.85, stdev=276.25 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 8175, max= 8192, per=45.21%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=18.15%, ctx=86, 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=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180444: Sun Sep 6 17:31:45 2026 write: IOPS=1, BW=6880KiB/s (7045kB/s)(12.0MiB/1786msec); 0 zone resets clat (msec): min=445, max=689, avg=571.28, stdev=122.31 lat (msec): min=445, max=689, avg=571.56, stdev=122.29 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 6113, max= 8192, per=39.51%, avg=7152.50, stdev=1470.07, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=15.80%, ctx=164, 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=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=8776KiB/s (8986kB/s), 2263KiB/s-6582KiB/s (2317kB/s-6740kB/s), io=16.0MiB (16.8MB), run=1810-1867msec WRITE: bw=17.7MiB/s (18.5MB/s), 4526KiB/s-7058KiB/s (4635kB/s-7227kB/s), io=32.0MiB (33.6MB), run=1741-1810msec