== sanity test 398b: DIO and buffer IO race ============== 10:39:12 (1789483152) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.6595 s, 13.8 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=182445: Tue Sep 15 10:40:36 2026 read: IOPS=20, BW=82.6KiB/s (84.6kB/s)(5992KiB/72531msec) clat (usec): min=41, max=337401, avg=26362.22, stdev=18130.60 lat (usec): min=41, max=337402, avg=26363.85, stdev=18130.39 clat percentiles (usec): | 1.00th=[ 70], 5.00th=[ 8979], 10.00th=[ 11207], 20.00th=[ 14353], | 30.00th=[ 16909], 40.00th=[ 19530], 50.00th=[ 22414], 60.00th=[ 26346], | 70.00th=[ 30278], 80.00th=[ 35914], 90.00th=[ 44827], 95.00th=[ 56361], | 99.00th=[ 89654], 99.50th=[101188], 99.90th=[154141], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 15, max= 151, per=24.83%, avg=81.94, stdev=23.72, samples=143 iops : min= 3, max= 37, avg=19.94, stdev= 5.99, samples=143 write: IOPS=21, BW=86.8KiB/s (88.9kB/s)(6296KiB/72531msec); 0 zone resets clat (usec): min=885, max=159178, avg=20904.45, stdev=19379.87 lat (usec): min=885, max=159180, avg=20907.42, stdev=19378.34 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1532], 10.00th=[ 2147], 20.00th=[ 3490], | 30.00th=[ 6063], 40.00th=[ 11731], 50.00th=[ 16319], 60.00th=[ 21103], | 70.00th=[ 26608], 80.00th=[ 34866], 90.00th=[ 47973], 95.00th=[ 58459], | 99.00th=[ 83362], 99.50th=[ 96994], 99.90th=[111674], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 23, max= 181, per=24.83%, avg=85.92, stdev=27.13, samples=143 iops : min= 5, max= 45, avg=20.94, stdev= 6.83, samples=143 lat (usec) : 50=0.16%, 100=0.85%, 250=0.29%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=4.36%, 4=7.65%, 10=8.33%, 20=27.54%, 50=42.55% lat (msec) : 100=7.55%, 250=0.46%, 500=0.03% cpu : usr=0.11%, sys=10.96%, ctx=7448, 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=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=182446: Tue Sep 15 10:40:36 2026 read: IOPS=20, BW=82.0KiB/s (83.0kB/s)(5940KiB/72431msec) clat (usec): min=46, max=358093, avg=27152.52, stdev=18013.75 lat (usec): min=47, max=358094, avg=27153.80, stdev=18014.15 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 9503], 10.00th=[ 11731], 20.00th=[ 14484], | 30.00th=[ 17433], 40.00th=[ 20579], 50.00th=[ 23462], 60.00th=[ 27395], | 70.00th=[ 31327], 80.00th=[ 36963], 90.00th=[ 46924], 95.00th=[ 57934], | 99.00th=[ 85459], 99.50th=[ 91751], 99.90th=[115868], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 11, max= 151, per=24.72%, avg=81.57, stdev=24.39, samples=143 iops : min= 2, max= 37, avg=19.85, stdev= 6.10, samples=143 write: IOPS=21, BW=87.6KiB/s (89.7kB/s)(6348KiB/72431msec); 0 zone resets clat (usec): min=804, max=128681, avg=20164.35, stdev=20264.26 lat (usec): min=805, max=128682, avg=20165.72, stdev=20264.34 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1369], 10.00th=[ 1991], 20.00th=[ 3064], | 30.00th=[ 4883], 40.00th=[ 8848], 50.00th=[ 14746], 60.00th=[ 19792], | 70.00th=[ 25297], 80.00th=[ 34341], 90.00th=[ 46924], 95.00th=[ 60556], | 99.00th=[ 88605], 99.50th=[102237], 99.90th=[126354], 99.95th=[128451], | 99.99th=[128451] bw ( KiB/s): min= 31, max= 175, per=25.11%, avg=86.87, stdev=28.81, samples=143 iops : min= 7, max= 43, avg=21.17, stdev= 7.24, samples=143 lat (usec) : 50=0.07%, 100=0.81%, 250=0.42%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.21%, 4=8.33%, 10=9.11%, 20=25.68%, 50=41.76% lat (msec) : 100=8.07%, 250=0.36%, 500=0.03% cpu : usr=0.10%, sys=11.11%, ctx=7486, 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=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=182447: Tue Sep 15 10:40:36 2026 read: IOPS=20, BW=83.1KiB/s (85.1kB/s)(6028KiB/72555msec) clat (usec): min=44, max=160140, avg=25913.94, stdev=16772.00 lat (usec): min=44, max=160141, avg=25914.99, stdev=16772.21 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 6718], 10.00th=[ 10552], 20.00th=[ 13304], | 30.00th=[ 16319], 40.00th=[ 19268], 50.00th=[ 22414], 60.00th=[ 26084], | 70.00th=[ 31065], 80.00th=[ 36439], 90.00th=[ 44827], 95.00th=[ 54789], | 99.00th=[ 88605], 99.50th=[100140], 99.90th=[149947], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 31, max= 151, per=24.96%, avg=82.37, stdev=23.94, samples=143 iops : min= 7, max= 37, avg=20.05, stdev= 5.99, samples=143 write: IOPS=21, BW=86.3KiB/s (88.3kB/s)(6260KiB/72555msec); 0 zone resets clat (usec): min=715, max=374910, avg=21344.55, stdev=22174.88 lat (usec): min=716, max=374912, avg=21348.63, stdev=22173.54 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1401], 10.00th=[ 1926], 20.00th=[ 3294], | 30.00th=[ 5080], 40.00th=[ 10683], 50.00th=[ 16319], 60.00th=[ 21365], | 70.00th=[ 27132], 80.00th=[ 35914], 90.00th=[ 49021], 95.00th=[ 61080], | 99.00th=[ 84411], 99.50th=[100140], 99.90th=[154141], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 23, max= 167, per=24.63%, avg=85.20, stdev=28.81, samples=143 iops : min= 5, max= 41, avg=20.76, stdev= 7.25, samples=143 lat (usec) : 50=0.20%, 100=1.46%, 250=0.42%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=5.08%, 4=7.19%, 10=9.51%, 20=25.75%, 50=41.86% lat (msec) : 100=7.75%, 250=0.49%, 500=0.03% cpu : usr=0.10%, sys=10.94%, ctx=7432, 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=182448: Tue Sep 15 10:40:36 2026 read: IOPS=20, BW=83.5KiB/s (85.5kB/s)(6052KiB/72497msec) clat (usec): min=41, max=187266, avg=26487.07, stdev=17214.52 lat (usec): min=42, max=187267, avg=26488.47, stdev=17214.59 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 5473], 10.00th=[ 10552], 20.00th=[ 14091], | 30.00th=[ 16909], 40.00th=[ 19792], 50.00th=[ 22676], 60.00th=[ 26608], | 70.00th=[ 31589], 80.00th=[ 37487], 90.00th=[ 46924], 95.00th=[ 56886], | 99.00th=[ 82314], 99.50th=[103285], 99.90th=[141558], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 22, max= 167, per=25.10%, avg=82.83, stdev=23.38, samples=143 iops : min= 5, max= 41, avg=20.16, stdev= 5.89, samples=143 write: IOPS=21, BW=86.0KiB/s (88.1kB/s)(6236KiB/72497msec); 0 zone resets clat (usec): min=794, max=367006, avg=20733.79, stdev=21115.70 lat (usec): min=795, max=367008, avg=20735.17, stdev=21115.74 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1369], 10.00th=[ 2008], 20.00th=[ 3228], | 30.00th=[ 5407], 40.00th=[ 10945], 50.00th=[ 15926], 60.00th=[ 20317], | 70.00th=[ 26346], 80.00th=[ 35914], 90.00th=[ 47449], 95.00th=[ 57934], | 99.00th=[ 81265], 99.50th=[ 93848], 99.90th=[116917], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 23, max= 159, per=24.71%, avg=85.50, stdev=27.59, samples=143 iops : min= 5, max= 39, avg=20.83, stdev= 6.93, samples=143 lat (usec) : 50=0.33%, 100=1.53%, 250=0.39%, 500=0.10%, 1000=0.20% lat (msec) : 2=4.85%, 4=7.13%, 10=9.47%, 20=25.85%, 50=41.76% lat (msec) : 100=7.88%, 250=0.49%, 500=0.03% cpu : usr=0.09%, sys=10.90%, ctx=7373, 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=331KiB/s (339kB/s), 82.0KiB/s-83.5KiB/s (83.0kB/s-85.5kB/s), io=23.4MiB (24.6MB), run=72431-72555msec WRITE: bw=346KiB/s (355kB/s), 86.0KiB/s-87.6KiB/s (88.1kB/s-89.7kB/s), io=24.6MiB (25.7MB), run=72431-72555msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182440: Tue Sep 15 10:41:00 2026 read: IOPS=15, BW=61.6KiB/s (63.1kB/s)(5992KiB/97304msec) clat (msec): min=4, max=464, avg=25.44, stdev=23.81 lat (msec): min=4, max=464, avg=25.44, stdev=23.81 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 28], 80.00th=[ 36], 90.00th=[ 54], 95.00th=[ 72], | 99.00th=[ 97], 99.50th=[ 120], 99.90th=[ 148], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 7, max= 184, per=25.04%, avg=61.60, stdev=36.49, samples=191 iops : min= 1, max= 46, avg=14.86, stdev= 9.14, samples=191 write: IOPS=16, BW=64.7KiB/s (66.3kB/s)(6296KiB/97304msec); 0 zone resets clat (msec): min=6, max=231, avg=37.44, stdev=24.54 lat (msec): min=6, max=231, avg=37.44, stdev=24.54 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 53], 90.00th=[ 72], 95.00th=[ 88], | 99.00th=[ 123], 99.50th=[ 136], 99.90th=[ 190], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 15, max= 183, per=24.99%, avg=64.47, stdev=34.12, samples=192 iops : min= 3, max= 45, avg=15.58, stdev= 8.54, samples=192 lat (msec) : 10=9.80%, 20=30.37%, 50=42.55%, 100=15.23%, 250=2.02% lat (msec) : 500=0.03% cpu : usr=0.08%, sys=3.88%, ctx=4945, 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=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=182441: Tue Sep 15 10:41:00 2026 read: IOPS=15, BW=61.8KiB/s (63.2kB/s)(5940KiB/96191msec) clat (msec): min=4, max=475, avg=25.05, stdev=23.71 lat (msec): min=4, max=475, avg=25.05, stdev=23.71 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 36], 90.00th=[ 52], 95.00th=[ 67], | 99.00th=[ 107], 99.50th=[ 126], 99.90th=[ 153], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 7, max= 207, per=25.05%, avg=61.63, stdev=37.30, samples=190 iops : min= 1, max= 51, avg=14.87, stdev= 9.35, samples=190 write: IOPS=16, BW=65.0KiB/s (67.6kB/s)(6348KiB/96191msec); 0 zone resets clat (msec): min=7, max=221, avg=37.01, stdev=24.21 lat (msec): min=7, max=221, avg=37.01, stdev=24.21 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 15], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 53], 90.00th=[ 70], 95.00th=[ 83], | 99.00th=[ 129], 99.50th=[ 142], 99.90th=[ 182], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 7, max= 176, per=25.53%, avg=65.88, stdev=33.66, samples=190 iops : min= 1, max= 44, avg=15.94, stdev= 8.42, samples=190 lat (msec) : 10=9.28%, 20=30.53%, 50=43.68%, 100=14.58%, 250=1.89% lat (msec) : 500=0.03% cpu : usr=0.07%, sys=4.12%, ctx=4878, 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=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=182442: Tue Sep 15 10:41:00 2026 read: IOPS=15, BW=62.4KiB/s (63.9kB/s)(6028KiB/96648msec) clat (msec): min=4, max=143, avg=25.23, stdev=20.97 lat (msec): min=4, max=143, avg=25.23, stdev=20.97 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 26], 80.00th=[ 36], 90.00th=[ 56], 95.00th=[ 71], | 99.00th=[ 103], 99.50th=[ 118], 99.90th=[ 136], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 7, max= 184, per=25.31%, avg=62.27, stdev=34.24, samples=191 iops : min= 1, max= 46, avg=15.03, stdev= 8.57, samples=191 write: IOPS=16, BW=64.8KiB/s (66.3kB/s)(6260KiB/96648msec); 0 zone resets clat (msec): min=7, max=485, avg=37.29, stdev=27.61 lat (msec): min=7, max=485, avg=37.30, stdev=27.61 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 42], 80.00th=[ 54], 90.00th=[ 71], 95.00th=[ 88], | 99.00th=[ 129], 99.50th=[ 140], 99.90th=[ 226], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 7, max= 192, per=25.03%, avg=64.58, stdev=35.96, samples=191 iops : min= 1, max= 48, avg=15.61, stdev= 8.98, samples=191 lat (msec) : 10=8.14%, 20=33.24%, 50=41.15%, 100=15.40%, 250=2.05% lat (msec) : 500=0.03% cpu : usr=0.07%, sys=4.04%, ctx=5011, 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=182443: Tue Sep 15 10:41:00 2026 read: IOPS=15, BW=62.7KiB/s (64.2kB/s)(6052KiB/96498msec) clat (msec): min=4, max=195, avg=25.64, stdev=21.93 lat (msec): min=4, max=195, avg=25.64, stdev=21.93 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 27], 80.00th=[ 37], 90.00th=[ 57], 95.00th=[ 71], | 99.00th=[ 105], 99.50th=[ 129], 99.90th=[ 163], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 8, max= 191, per=25.55%, avg=62.85, stdev=36.00, samples=189 iops : min= 2, max= 47, avg=15.18, stdev= 8.99, samples=189 write: IOPS=16, BW=64.6KiB/s (66.2kB/s)(6236KiB/96498msec); 0 zone resets clat (msec): min=8, max=487, avg=36.84, stdev=27.01 lat (msec): min=8, max=487, avg=36.84, stdev=27.01 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 53], 90.00th=[ 71], 95.00th=[ 86], | 99.00th=[ 126], 99.50th=[ 140], 99.90th=[ 209], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 7, max= 176, per=25.10%, avg=64.76, stdev=35.69, samples=189 iops : min= 1, max= 44, avg=15.66, stdev= 8.95, samples=189 lat (msec) : 10=9.34%, 20=30.96%, 50=42.38%, 100=15.33%, 250=1.95% lat (msec) : 500=0.03% cpu : usr=0.08%, sys=4.01%, ctx=5003, 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=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=247KiB/s (253kB/s), 61.6KiB/s-62.7KiB/s (63.1kB/s-64.2kB/s), io=23.4MiB (24.6MB), run=96191-97304msec WRITE: bw=258KiB/s (265kB/s), 64.6KiB/s-65.0KiB/s (66.2kB/s-67.6kB/s), io=24.6MiB (25.7MB), run=96191-97304msec 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=182480: Tue Sep 15 10:41:26 2026 read: IOPS=18, BW=304KiB/s (311kB/s)(5920KiB/19490msec) clat (usec): min=45, max=133882, avg=27492.92, stdev=17892.95 lat (usec): min=46, max=133884, avg=27495.33, stdev=17892.94 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 87], 10.00th=[ 11469], 20.00th=[ 15533], | 30.00th=[ 18744], 40.00th=[ 20841], 50.00th=[ 23725], 60.00th=[ 27395], | 70.00th=[ 31589], 80.00th=[ 37487], 90.00th=[ 49021], 95.00th=[ 58459], | 99.00th=[ 90702], 99.50th=[102237], 99.90th=[133694], 99.95th=[133694], | 99.99th=[133694] bw ( KiB/s): min= 190, max= 510, per=24.69%, avg=301.74, stdev=75.81, samples=38 iops : min= 11, max= 31, avg=18.26, stdev= 4.82, samples=38 write: IOPS=20, BW=327KiB/s (335kB/s)(6368KiB/19490msec); 0 zone resets clat (usec): min=1298, max=106622, avg=23039.36, stdev=20189.34 lat (usec): min=1300, max=106624, avg=23041.43, stdev=20189.55 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2376], 10.00th=[ 3326], 20.00th=[ 5276], | 30.00th=[ 8586], 40.00th=[ 13435], 50.00th=[ 18220], 60.00th=[ 22152], | 70.00th=[ 28443], 80.00th=[ 38011], 90.00th=[ 53216], 95.00th=[ 62653], | 99.00th=[ 92799], 99.50th=[106431], 99.90th=[106431], 99.95th=[106431], | 99.99th=[106431] bw ( KiB/s): min= 95, max= 573, per=25.43%, avg=326.97, stdev=124.27, samples=38 iops : min= 5, max= 35, avg=19.84, stdev= 7.90, samples=38 lat (usec) : 50=0.26%, 100=2.47%, 250=0.65%, 500=0.26%, 750=0.13% lat (msec) : 2=1.43%, 4=5.73%, 10=10.42%, 20=23.70%, 50=44.27% lat (msec) : 100=10.03%, 250=0.65% cpu : usr=0.10%, sys=12.14%, ctx=2068, 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=182482: Tue Sep 15 10:41:26 2026 read: IOPS=18, BW=293KiB/s (300kB/s)(5744KiB/19585msec) clat (usec): min=52, max=124456, avg=27948.14, stdev=15896.26 lat (usec): min=53, max=124457, avg=27949.20, stdev=15896.26 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 6587], 10.00th=[ 13304], 20.00th=[ 16450], | 30.00th=[ 19792], 40.00th=[ 22414], 50.00th=[ 25035], 60.00th=[ 28705], | 70.00th=[ 32113], 80.00th=[ 37487], 90.00th=[ 45351], 95.00th=[ 54789], | 99.00th=[ 84411], 99.50th=[100140], 99.90th=[124257], 99.95th=[124257], | 99.99th=[124257] bw ( KiB/s): min= 116, max= 475, per=23.95%, avg=292.71, stdev=96.25, samples=38 iops : min= 7, max= 29, avg=17.71, stdev= 6.03, samples=38 write: IOPS=20, BW=334KiB/s (342kB/s)(6544KiB/19585msec); 0 zone resets clat (usec): min=1227, max=133941, avg=23197.51, stdev=20894.97 lat (usec): min=1228, max=133942, avg=23200.11, stdev=20894.44 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2212], 10.00th=[ 3228], 20.00th=[ 4948], | 30.00th=[ 7832], 40.00th=[ 13173], 50.00th=[ 18220], 60.00th=[ 22938], | 70.00th=[ 28967], 80.00th=[ 38011], 90.00th=[ 52167], 95.00th=[ 66323], | 99.00th=[ 88605], 99.50th=[102237], 99.90th=[133694], 99.95th=[133694], | 99.99th=[133694] bw ( KiB/s): min= 159, max= 512, per=25.58%, avg=329.00, stdev=77.87, samples=38 iops : min= 9, max= 32, avg=20.00, stdev= 4.95, samples=38 lat (usec) : 100=1.56%, 250=0.39%, 500=0.26% lat (msec) : 2=1.82%, 4=5.08%, 10=11.85%, 20=22.27%, 50=47.66% lat (msec) : 100=8.46%, 250=0.65% cpu : usr=0.13%, sys=11.85%, ctx=2110, 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=182484: Tue Sep 15 10:41:26 2026 read: IOPS=20, BW=322KiB/s (330kB/s)(6256KiB/19432msec) clat (usec): min=48, max=83851, avg=27067.77, stdev=15128.78 lat (usec): min=49, max=83852, avg=27068.84, stdev=15128.82 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 103], 10.00th=[11731], 20.00th=[15926], | 30.00th=[18744], 40.00th=[22152], 50.00th=[25035], 60.00th=[29492], | 70.00th=[32900], 80.00th=[36439], 90.00th=[43779], 95.00th=[56886], | 99.00th=[73925], 99.50th=[78119], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 117, max= 512, per=26.42%, avg=322.84, stdev=90.18, samples=38 iops : min= 7, max= 32, avg=19.61, stdev= 5.72, samples=38 write: IOPS=19, BW=310KiB/s (318kB/s)(6032KiB/19432msec); 0 zone resets clat (usec): min=1417, max=127527, avg=22974.81, stdev=20210.51 lat (usec): min=1419, max=127530, avg=22986.86, stdev=20210.49 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2376], 10.00th=[ 3458], 20.00th=[ 5014], | 30.00th=[ 7111], 40.00th=[ 12780], 50.00th=[ 16909], 60.00th=[ 24511], | 70.00th=[ 30540], 80.00th=[ 39584], 90.00th=[ 52691], 95.00th=[ 63177], | 99.00th=[ 82314], 99.50th=[ 92799], 99.90th=[127402], 99.95th=[127402], | 99.99th=[127402] bw ( KiB/s): min= 95, max= 544, per=23.87%, avg=306.95, stdev=98.17, samples=38 iops : min= 5, max= 34, avg=18.61, stdev= 6.13, samples=38 lat (usec) : 50=0.13%, 100=2.34%, 250=0.52%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=1.30%, 4=5.99%, 10=11.20%, 20=21.48%, 50=47.40% lat (msec) : 100=8.98%, 250=0.13% cpu : usr=0.10%, sys=11.59%, ctx=2059, 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=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=182486: Tue Sep 15 10:41:26 2026 read: IOPS=20, BW=330KiB/s (338kB/s)(6032KiB/18288msec) clat (usec): min=45, max=85330, avg=26002.99, stdev=15407.57 lat (usec): min=46, max=85331, avg=26004.48, stdev=15407.27 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 98], 10.00th=[ 9634], 20.00th=[14877], | 30.00th=[18744], 40.00th=[21627], 50.00th=[24511], 60.00th=[27657], | 70.00th=[31589], 80.00th=[36439], 90.00th=[42206], 95.00th=[53216], | 99.00th=[77071], 99.50th=[79168], 99.90th=[85459], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 160, max= 541, per=26.80%, avg=327.47, stdev=84.26, samples=36 iops : min= 10, max= 33, avg=19.89, stdev= 5.27, samples=36 write: IOPS=21, BW=342KiB/s (350kB/s)(6256KiB/18288msec); 0 zone resets clat (usec): min=1620, max=103440, avg=21320.30, stdev=18905.16 lat (usec): min=1622, max=103441, avg=21323.17, stdev=18904.92 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2409], 10.00th=[ 3490], 20.00th=[ 5014], | 30.00th=[ 7439], 40.00th=[ 12256], 50.00th=[ 16909], 60.00th=[ 19792], | 70.00th=[ 25297], 80.00th=[ 34866], 90.00th=[ 49021], 95.00th=[ 59507], | 99.00th=[ 79168], 99.50th=[ 93848], 99.90th=[103285], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 159, max= 691, per=26.69%, avg=343.28, stdev=104.10, samples=36 iops : min= 9, max= 43, avg=20.89, stdev= 6.64, samples=36 lat (usec) : 50=0.26%, 100=2.47%, 250=1.43%, 500=0.39%, 750=0.13% lat (msec) : 2=1.43%, 4=6.25%, 10=10.42%, 20=26.04%, 50=43.49% lat (msec) : 100=7.55%, 250=0.13% cpu : usr=0.11%, sys=12.48%, ctx=2057, 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=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=1223KiB/s (1252kB/s), 293KiB/s-330KiB/s (300kB/s-338kB/s), io=23.4MiB (24.5MB), run=18288-19585msec WRITE: bw=1287KiB/s (1318kB/s), 310KiB/s-342KiB/s (318kB/s-350kB/s), io=24.6MiB (25.8MB), run=18288-19585msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182479: Tue Sep 15 10:41:34 2026 read: IOPS=13, BW=209KiB/s (214kB/s)(5920KiB/28377msec) clat (msec): min=6, max=155, avg=30.43, stdev=20.98 lat (msec): min=6, max=155, avg=30.43, stdev=20.98 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 41], 90.00th=[ 63], 95.00th=[ 73], | 99.00th=[ 102], 99.50th=[ 116], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 32, max= 544, per=24.41%, avg=206.04, stdev=103.55, samples=56 iops : min= 2, max= 34, avg=12.29, stdev= 6.53, samples=56 write: IOPS=14, BW=224KiB/s (230kB/s)(6368KiB/28377msec); 0 zone resets clat (msec): min=11, max=163, avg=42.84, stdev=25.12 lat (msec): min=11, max=163, avg=42.84, stdev=25.12 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 31], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 50], 80.00th=[ 59], 90.00th=[ 78], 95.00th=[ 97], | 99.00th=[ 131], 99.50th=[ 155], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 64, max= 478, per=25.07%, avg=222.61, stdev=85.50, samples=56 iops : min= 4, max= 29, avg=13.32, stdev= 5.36, samples=56 lat (msec) : 10=2.99%, 20=21.48%, 50=53.91%, 100=18.88%, 250=2.73% cpu : usr=0.06%, sys=3.88%, ctx=1302, 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=182481: Tue Sep 15 10:41:34 2026 read: IOPS=12, BW=205KiB/s (210kB/s)(5744KiB/28044msec) clat (msec): min=5, max=153, avg=29.33, stdev=20.40 lat (msec): min=5, max=153, avg=29.33, stdev=20.40 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 39], 90.00th=[ 58], 95.00th=[ 70], | 99.00th=[ 107], 99.50th=[ 130], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 63, max= 447, per=24.11%, avg=203.53, stdev=93.70, samples=55 iops : min= 3, max= 27, avg=12.13, stdev= 5.84, samples=55 write: IOPS=14, BW=233KiB/s (239kB/s)(6544KiB/28044msec); 0 zone resets clat (msec): min=13, max=194, avg=42.74, stdev=24.63 lat (msec): min=13, max=194, avg=42.75, stdev=24.63 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 48], 80.00th=[ 60], 90.00th=[ 74], 95.00th=[ 91], | 99.00th=[ 136], 99.50th=[ 150], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 95, max= 414, per=26.07%, avg=231.51, stdev=88.39, samples=55 iops : min= 5, max= 25, avg=13.87, stdev= 5.52, samples=55 lat (msec) : 10=1.95%, 20=20.83%, 50=57.16%, 100=17.71%, 250=2.34% cpu : usr=0.03%, sys=4.06%, ctx=1287, 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=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=182483: Tue Sep 15 10:41:34 2026 read: IOPS=13, BW=221KiB/s (227kB/s)(6256KiB/28246msec) clat (msec): min=5, max=127, avg=29.62, stdev=19.31 lat (msec): min=5, max=127, avg=29.62, stdev=19.31 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 41], 90.00th=[ 61], 95.00th=[ 71], | 99.00th=[ 89], 99.50th=[ 115], 99.90th=[ 129], 99.95th=[ 129], | 99.99th=[ 129] bw ( KiB/s): min= 63, max= 541, per=26.31%, avg=222.05, stdev=117.60, samples=56 iops : min= 3, max= 33, avg=13.30, stdev= 7.33, samples=56 write: IOPS=13, BW=214KiB/s (219kB/s)(6032KiB/28246msec); 0 zone resets clat (msec): min=11, max=185, avg=43.86, stdev=26.99 lat (msec): min=11, max=185, avg=43.86, stdev=26.99 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 48], 80.00th=[ 63], 90.00th=[ 80], 95.00th=[ 97], | 99.00th=[ 136], 99.50th=[ 184], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 95, max= 384, per=23.92%, avg=212.41, stdev=79.67, samples=56 iops : min= 5, max= 24, avg=12.70, stdev= 5.06, samples=56 lat (msec) : 10=2.47%, 20=20.83%, 50=55.99%, 100=18.10%, 250=2.60% cpu : usr=0.07%, sys=3.95%, ctx=1433, 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=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=182485: Tue Sep 15 10:41:34 2026 read: IOPS=13, BW=216KiB/s (222kB/s)(6032KiB/27882msec) clat (msec): min=6, max=168, avg=32.22, stdev=24.74 lat (msec): min=6, max=168, avg=32.22, stdev=24.74 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 33], 80.00th=[ 43], 90.00th=[ 68], 95.00th=[ 92], | 99.00th=[ 125], 99.50th=[ 128], 99.90th=[ 169], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 31, max= 447, per=25.41%, avg=214.47, stdev=88.68, samples=55 iops : min= 1, max= 27, avg=12.80, stdev= 5.56, samples=55 write: IOPS=14, BW=224KiB/s (230kB/s)(6256KiB/27882msec); 0 zone resets clat (msec): min=12, max=183, avg=40.03, stdev=23.25 lat (msec): min=12, max=183, avg=40.03, stdev=23.25 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 38], | 70.00th=[ 44], 80.00th=[ 56], 90.00th=[ 69], 95.00th=[ 84], | 99.00th=[ 148], 99.50th=[ 150], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 63, max= 480, per=25.23%, avg=224.04, stdev=94.42, samples=55 iops : min= 3, max= 30, avg=13.42, stdev= 5.93, samples=55 lat (msec) : 10=1.43%, 20=21.74%, 50=56.77%, 100=17.19%, 250=2.86% cpu : usr=0.09%, sys=3.90%, ctx=1305, 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=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=844KiB/s (864kB/s), 205KiB/s-221KiB/s (210kB/s-227kB/s), io=23.4MiB (24.5MB), run=27882-28377msec WRITE: bw=888KiB/s (909kB/s), 214KiB/s-233KiB/s (219kB/s-239kB/s), io=24.6MiB (25.8MB), run=27882-28377msec 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=182499: Tue Sep 15 10:41:45 2026 read: IOPS=2, BW=2921KiB/s (2991kB/s)(7168KiB/2454msec) clat (usec): min=810, max=333776, avg=129596.36, stdev=114041.25 lat (usec): min=811, max=333778, avg=129597.70, stdev=114041.38 clat percentiles (usec): | 1.00th=[ 807], 5.00th=[ 807], 10.00th=[ 807], 20.00th=[ 14353], | 30.00th=[105382], 40.00th=[105382], 50.00th=[114820], 60.00th=[132645], | 70.00th=[132645], 80.00th=[204473], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 4087, max= 6083, per=98.76%, avg=5085.00, stdev=1411.39, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2086KiB/s (2136kB/s)(5120KiB/2454msec); 0 zone resets clat (msec): min=240, max=410, avg=300.65, stdev=69.92 lat (msec): min=240, max=410, avg=300.71, stdev=69.92 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 296], 60.00th=[ 296], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 2039, max= 4087, per=42.49%, avg=3063.00, stdev=1448.15, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (usec) : 1000=8.33% lat (msec) : 20=8.33%, 250=50.00%, 500=33.33% cpu : usr=0.04%, sys=29.60%, ctx=258, 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=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=182501: Tue Sep 15 10:41:45 2026 read: IOPS=0, BW=515KiB/s (527kB/s)(2048KiB/3977msec) clat (msec): min=179, max=343, avg=261.52, stdev=115.50 lat (msec): min=179, max=343, avg=261.52, stdev=115.50 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 180], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 1418, max= 1950, per=32.71%, avg=1684.00, stdev=376.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2575KiB/s (2637kB/s)(10.0MiB/3977msec); 0 zone resets clat (msec): min=173, max=689, avg=336.87, stdev=174.96 lat (msec): min=173, max=689, avg=336.95, stdev=174.96 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 180], | 30.00th=[ 182], 40.00th=[ 186], 50.00th=[ 247], 60.00th=[ 359], | 70.00th=[ 397], 80.00th=[ 468], 90.00th=[ 489], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1418, max= 4087, per=48.43%, avg=3491.00, stdev=1162.55, samples=5 iops : min= 1, max= 3, avg= 2.60, stdev= 0.89, samples=5 lat (msec) : 250=50.00%, 500=41.67%, 750=8.33% cpu : usr=0.05%, sys=21.68%, ctx=287, 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=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=182502: Tue Sep 15 10:41:45 2026 read: IOPS=2, BW=2326KiB/s (2382kB/s)(6144KiB/2641msec) clat (usec): min=595, max=355083, avg=166490.09, stdev=142755.67 lat (usec): min=595, max=355084, avg=166491.01, stdev=142755.67 clat percentiles (usec): | 1.00th=[ 594], 5.00th=[ 594], 10.00th=[ 594], 20.00th=[ 7701], | 30.00th=[ 7701], 40.00th=[154141], 50.00th=[154141], 60.00th=[204473], | 70.00th=[274727], 80.00th=[274727], 90.00th=[354419], 95.00th=[354419], | 99.00th=[354419], 99.50th=[354419], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 1928, max= 8159, per=97.95%, avg=5043.50, stdev=4405.98, samples=2 iops : min= 1, max= 7, avg= 4.00, stdev= 4.24, samples=2 write: IOPS=2, BW=2326KiB/s (2382kB/s)(6144KiB/2641msec); 0 zone resets clat (msec): min=153, max=339, avg=247.94, stdev=83.36 lat (msec): min=153, max=339, avg=248.03, stdev=83.42 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 220], 50.00th=[ 220], 60.00th=[ 305], | 70.00th=[ 317], 80.00th=[ 317], 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= 1928, max= 2860, per=30.75%, avg=2216.50, stdev=432.18, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 250=41.67%, 500=41.67% cpu : usr=0.00%, sys=28.11%, ctx=335, 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=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=182503: Tue Sep 15 10:41:45 2026 read: IOPS=1, BW=1524KiB/s (1561kB/s)(5120KiB/3359msec) clat (usec): min=472, max=177995, avg=61824.68, stdev=85476.85 lat (usec): min=472, max=177995, avg=61825.57, stdev=85476.60 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], 20.00th=[ 474], | 30.00th=[ 578], 40.00th=[ 578], 50.00th=[ 1037], 60.00th=[ 1037], | 70.00th=[129500], 80.00th=[129500], 90.00th=[177210], 95.00th=[177210], | 99.00th=[177210], 99.50th=[177210], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 7801, max= 7801, per=100.00%, avg=7801.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2134KiB/s (2185kB/s)(7168KiB/3359msec); 0 zone resets clat (msec): min=215, max=747, avg=416.37, stdev=196.60 lat (msec): min=215, max=747, avg=416.44, stdev=196.59 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 262], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 617], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1414, max= 4015, per=31.79%, avg=2291.40, stdev=998.07, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=18.94%, ctx=136, 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=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=5150KiB/s (5273kB/s), 515KiB/s-2921KiB/s (527kB/s-2991kB/s), io=20.0MiB (20.0MB), run=2454-3977msec WRITE: bw=7209KiB/s (7382kB/s), 2086KiB/s-2575KiB/s (2136kB/s-2637kB/s), io=28.0MiB (29.4MB), run=2454-3977msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182496: Tue Sep 15 10:41:45 2026 read: IOPS=1, BW=2019KiB/s (2068kB/s)(7168KiB/3550msec) clat (msec): min=81, max=156, avg=124.40, stdev=30.91 lat (msec): min=81, max=156, avg=124.40, stdev=30.91 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 91], | 30.00th=[ 110], 40.00th=[ 110], 50.00th=[ 131], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 155], 90.00th=[ 157], 95.00th=[ 157], | 99.00th=[ 157], 99.50th=[ 157], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 1939, max= 4185, per=70.30%, avg=3336.67, stdev=1219.61, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1442KiB/s (1477kB/s)(5120KiB/3550msec); 0 zone resets clat (msec): min=219, max=689, avg=506.80, stdev=194.39 lat (msec): min=219, max=689, avg=506.86, stdev=194.38 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 418], 40.00th=[ 418], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 667], 80.00th=[ 667], 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= 1943, max= 4023, per=39.93%, avg=2652.67, stdev=1187.00, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=50.00%, 500=8.33%, 750=25.00% cpu : usr=0.00%, sys=7.13%, ctx=100, 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=182497: Tue Sep 15 10:41:45 2026 read: IOPS=0, BW=475KiB/s (486kB/s)(2048KiB/4315msec) clat (msec): min=111, max=542, avg=327.15, stdev=304.32 lat (msec): min=111, max=542, avg=327.15, stdev=304.33 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 112], 40.00th=[ 112], 50.00th=[ 112], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1398, max= 1939, per=35.16%, avg=1668.50, stdev=382.54, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2373KiB/s (2430kB/s)(10.0MiB/4315msec); 0 zone resets clat (msec): min=102, max=762, avg=352.12, stdev=239.05 lat (msec): min=102, max=762, avg=352.19, stdev=239.05 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 140], | 30.00th=[ 148], 40.00th=[ 159], 50.00th=[ 190], 60.00th=[ 418], | 70.00th=[ 422], 80.00th=[ 523], 90.00th=[ 659], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 1939, max= 4055, per=41.87%, avg=2782.00, stdev=1087.04, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 250=50.00%, 500=16.67%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=7.53%, ctx=126, 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=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=182498: Tue Sep 15 10:41:45 2026 read: IOPS=1, BW=1550KiB/s (1587kB/s)(6144KiB/3965msec) clat (msec): min=124, max=652, avg=361.66, stdev=207.27 lat (msec): min=124, max=652, avg=361.66, stdev=207.27 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 422], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1921, max= 2043, per=41.76%, avg=1982.00, stdev=53.20, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1550KiB/s (1587kB/s)(6144KiB/3965msec); 0 zone resets clat (msec): min=94, max=466, avg=294.21, stdev=128.33 lat (msec): min=94, max=466, avg=294.31, stdev=128.31 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 338], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 1939, max= 3835, per=37.09%, avg=2464.00, stdev=915.27, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=6.58%, ctx=105, 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=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=182500: Tue Sep 15 10:41:45 2026 read: IOPS=1, BW=1242KiB/s (1272kB/s)(5120KiB/4122msec) clat (msec): min=56, max=551, avg=296.73, stdev=216.05 lat (msec): min=56, max=551, avg=296.73, stdev=216.05 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 57], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 330], 60.00th=[ 330], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1921, max= 4087, per=56.10%, avg=2662.67, stdev=1233.86, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1739KiB/s (1781kB/s)(7168KiB/4122msec); 0 zone resets clat (msec): min=151, max=703, avg=362.84, stdev=205.97 lat (msec): min=151, max=703, avg=362.92, stdev=205.96 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 159], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 305], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 567], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1939, max= 4063, per=35.42%, avg=2353.00, stdev=838.59, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 100=16.67%, 250=16.67%, 500=41.67%, 750=25.00% cpu : usr=0.00%, sys=7.35%, ctx=102, 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=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=4746KiB/s (4860kB/s), 475KiB/s-2019KiB/s (486kB/s-2068kB/s), io=20.0MiB (20.0MB), run=3550-4315msec WRITE: bw=6645KiB/s (6804kB/s), 1442KiB/s-2373KiB/s (1477kB/s-2430kB/s), io=28.0MiB (29.4MB), run=3550-4315msec 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=182509: Tue Sep 15 10:41:58 2026 read: IOPS=0, BW=3091KiB/s (3165kB/s)(12.0MiB/3976msec) clat (msec): min=675, max=2491, avg=1296.03, stdev=1035.50 lat (msec): min=675, max=2491, avg=1296.03, stdev=1035.50 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 2500], 80.00th=[ 2500], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=14.89%, ctx=958, 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=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=182510: Tue Sep 15 10:41:58 2026 read: IOPS=0, BW=843KiB/s (863kB/s)(4096KiB/4859msec) clat (nsec): min=717085k, max=717085k, avg=717085009.00, stdev= 0.00 lat (nsec): min=717087k, max=717087k, avg=717087476.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1686KiB/s (1726kB/s)(8192KiB/4859msec); 0 zone resets clat (msec): min=263, max=3791, avg=2027.39, stdev=2494.83 lat (msec): min=263, max=3791, avg=2027.65, stdev=2494.92 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 264], 50.00th=[ 264], 60.00th=[ 3775], | 70.00th=[ 3775], 80.00th=[ 3775], 90.00th=[ 3775], 95.00th=[ 3775], | 99.00th=[ 3775], 99.50th=[ 3775], 99.90th=[ 3775], 99.95th=[ 3775], | 99.99th=[ 3775] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.71%, ctx=212, 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=182511: Tue Sep 15 10:41:58 2026 write: IOPS=0, BW=3396KiB/s (3478kB/s)(12.0MiB/3618msec); 0 zone resets clat (msec): min=291, max=2821, avg=1190.75, stdev=1414.94 lat (msec): min=292, max=2822, avg=1191.10, stdev=1415.02 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 6390, max= 8159, per=100.00%, avg=7274.50, stdev=1250.87, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=5.20%, ctx=64, 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=0,3,0,0 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=182512: Tue Sep 15 10:41:58 2026 write: IOPS=0, BW=3003KiB/s (3075kB/s)(12.0MiB/4092msec); 0 zone resets clat (msec): min=609, max=2467, avg=1336.88, stdev=992.56 lat (msec): min=615, max=2467, avg=1339.10, stdev=990.44 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 2467], 80.00th=[ 2467], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.50%, ctx=45, 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=0,3,0,0 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=3372KiB/s (3453kB/s), 843KiB/s-3091KiB/s (863kB/s-3165kB/s), io=16.0MiB (16.8MB), run=3976-4859msec WRITE: bw=6744KiB/s (6906kB/s), 1686KiB/s-3396KiB/s (1726kB/s-3478kB/s), io=32.0MiB (33.6MB), run=3618-4859msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182514: Tue Sep 15 10:41:58 2026 read: IOPS=0, BW=3019KiB/s (3092kB/s)(12.0MiB/4070msec) clat (msec): min=492, max=2780, avg=1356.25, stdev=1242.61 lat (msec): min=492, max=2780, avg=1356.25, stdev=1242.61 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 493], 10.00th=[ 493], 20.00th=[ 493], | 30.00th=[ 493], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 2769], 80.00th=[ 2769], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 7816, max= 8192, per=100.00%, avg=8004.00, stdev=265.87, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.37%, ctx=63, 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=182515: Tue Sep 15 10:41:58 2026 read: IOPS=0, BW=871KiB/s (892kB/s)(4096KiB/4704msec) clat (nsec): min=558698k, max=558698k, avg=558697723.00, stdev= 0.00 lat (nsec): min=558700k, max=558700k, avg=558699823.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1741KiB/s (1783kB/s)(8192KiB/4704msec); 0 zone resets clat (msec): min=327, max=3815, avg=2071.78, stdev=2466.42 lat (msec): min=328, max=3816, avg=2072.07, stdev=2466.43 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 3809], | 70.00th=[ 3809], 80.00th=[ 3809], 90.00th=[ 3809], 95.00th=[ 3809], | 99.00th=[ 3809], 99.50th=[ 3809], 99.90th=[ 3809], 99.95th=[ 3809], | 99.99th=[ 3809] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.27%, ctx=60, 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=182516: Tue Sep 15 10:41:58 2026 write: IOPS=0, BW=2730KiB/s (2796kB/s)(12.0MiB/4501msec); 0 zone resets clat (msec): min=502, max=3229, avg=1492.84, stdev=1508.94 lat (msec): min=502, max=3229, avg=1493.17, stdev=1508.95 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 3239], 80.00th=[ 3239], 90.00th=[ 3239], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 8062, max= 8192, per=100.00%, avg=8127.00, stdev=91.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.13%, ctx=48, 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=0,3,0,0 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=182517: Tue Sep 15 10:41:58 2026 write: IOPS=0, BW=3049KiB/s (3122kB/s)(12.0MiB/4030msec); 0 zone resets clat (msec): min=254, max=2843, avg=1341.28, stdev=1343.87 lat (msec): min=255, max=2844, avg=1341.89, stdev=1343.57 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 927], 50.00th=[ 927], 60.00th=[ 927], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.10%, sys=4.37%, ctx=62, 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=3483KiB/s (3567kB/s), 871KiB/s-3019KiB/s (892kB/s-3092kB/s), io=16.0MiB (16.8MB), run=4070-4704msec WRITE: bw=6966KiB/s (7133kB/s), 1741KiB/s-3049KiB/s (1783kB/s-3122kB/s), io=32.0MiB (33.6MB), run=4030-4704msec