== sanity test 398b: DIO and buffer IO race ============== 07:19:48 (1786533588) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.18713 s, 15.8 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=148011: Wed Aug 12 07:20:56 2026 read: IOPS=25, BW=104KiB/s (106kB/s)(5992KiB/57828msec) clat (usec): min=35, max=854452, avg=19294.55, stdev=25076.91 lat (usec): min=37, max=854454, avg=19295.54, stdev=25076.92 clat percentiles (usec): | 1.00th=[ 71], 5.00th=[ 169], 10.00th=[ 8029], 20.00th=[ 10290], | 30.00th=[ 12125], 40.00th=[ 13960], 50.00th=[ 16450], 60.00th=[ 19268], | 70.00th=[ 22676], 80.00th=[ 26608], 90.00th=[ 31589], 95.00th=[ 38011], | 99.00th=[ 63701], 99.50th=[ 90702], 99.90th=[185598], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 40, max= 199, per=25.39%, avg=104.34, stdev=27.34, samples=114 iops : min= 10, max= 49, avg=25.65, stdev= 6.82, samples=114 write: IOPS=27, BW=109KiB/s (111kB/s)(6296KiB/57828msec); 0 zone resets clat (usec): min=808, max=182314, avg=18231.18, stdev=15734.64 lat (usec): min=808, max=182315, avg=18232.85, stdev=15735.10 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 2343], 10.00th=[ 3130], 20.00th=[ 4752], | 30.00th=[ 7111], 40.00th=[ 11600], 50.00th=[ 15139], 60.00th=[ 18744], | 70.00th=[ 23200], 80.00th=[ 28443], 90.00th=[ 37487], 95.00th=[ 44827], | 99.00th=[ 66323], 99.50th=[ 81265], 99.90th=[162530], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 39, max= 199, per=25.40%, avg=109.49, stdev=28.93, samples=114 iops : min= 9, max= 49, avg=26.94, stdev= 7.24, samples=114 lat (usec) : 50=0.13%, 100=1.01%, 250=1.69%, 500=0.13%, 1000=0.10% lat (msec) : 2=1.60%, 4=6.80%, 10=15.85%, 20=35.51%, 50=34.57% lat (msec) : 100=2.28%, 250=0.29%, 1000=0.03% cpu : usr=0.15%, sys=23.53%, ctx=8861, 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=148012: Wed Aug 12 07:20:56 2026 read: IOPS=25, BW=102KiB/s (104kB/s)(5940KiB/58208msec) clat (usec): min=41, max=142033, avg=19527.58, stdev=12409.44 lat (usec): min=42, max=142034, avg=19531.39, stdev=12405.73 clat percentiles (usec): | 1.00th=[ 77], 5.00th=[ 5735], 10.00th=[ 8586], 20.00th=[ 10814], | 30.00th=[ 12911], 40.00th=[ 14877], 50.00th=[ 17171], 60.00th=[ 19792], | 70.00th=[ 23200], 80.00th=[ 27132], 90.00th=[ 32900], 95.00th=[ 39060], | 99.00th=[ 60031], 99.50th=[ 83362], 99.90th=[127402], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 39, max= 175, per=24.90%, avg=102.35, stdev=28.76, samples=114 iops : min= 9, max= 43, avg=25.15, stdev= 7.15, samples=114 write: IOPS=27, BW=109KiB/s (112kB/s)(6348KiB/58208msec); 0 zone resets clat (usec): min=1019, max=878395, avg=18250.89, stdev=26893.30 lat (usec): min=1019, max=878396, avg=18252.26, stdev=26893.44 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 2245], 10.00th=[ 2999], 20.00th=[ 4490], | 30.00th=[ 7177], 40.00th=[ 11076], 50.00th=[ 14484], 60.00th=[ 17433], | 70.00th=[ 21627], 80.00th=[ 27132], 90.00th=[ 36963], 95.00th=[ 46400], | 99.00th=[ 70779], 99.50th=[106431], 99.90th=[181404], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 47, max= 192, per=25.27%, avg=108.89, stdev=27.39, samples=114 iops : min= 11, max= 48, avg=26.78, stdev= 6.84, samples=114 lat (usec) : 50=0.13%, 100=0.52%, 250=1.43%, 500=0.10% lat (msec) : 2=2.28%, 4=6.87%, 10=15.36%, 20=37.11%, 50=33.37% lat (msec) : 100=2.41%, 250=0.39%, 1000=0.03% cpu : usr=0.13%, sys=23.54%, ctx=8899, 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=148013: Wed Aug 12 07:20:56 2026 read: IOPS=25, BW=103KiB/s (106kB/s)(6028KiB/58326msec) clat (usec): min=41, max=886347, avg=19411.08, stdev=25248.69 lat (usec): min=42, max=886348, avg=19412.59, stdev=25248.91 clat percentiles (usec): | 1.00th=[ 81], 5.00th=[ 188], 10.00th=[ 7963], 20.00th=[ 10290], | 30.00th=[ 12518], 40.00th=[ 14746], 50.00th=[ 16909], 60.00th=[ 19792], | 70.00th=[ 22676], 80.00th=[ 26084], 90.00th=[ 32375], 95.00th=[ 38536], | 99.00th=[ 56886], 99.50th=[ 69731], 99.90th=[164627], 99.95th=[884999], | 99.99th=[884999] bw ( KiB/s): min= 47, max= 200, per=25.31%, avg=104.01, stdev=29.29, samples=115 iops : min= 11, max= 50, avg=25.57, stdev= 7.33, samples=115 write: IOPS=26, BW=107KiB/s (110kB/s)(6260KiB/58326msec); 0 zone resets clat (usec): min=703, max=169151, avg=18430.77, stdev=15594.89 lat (usec): min=703, max=169153, avg=18432.89, stdev=15594.95 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 2245], 10.00th=[ 3097], 20.00th=[ 4752], | 30.00th=[ 7635], 40.00th=[ 11600], 50.00th=[ 15008], 60.00th=[ 19006], | 70.00th=[ 23987], 80.00th=[ 29492], 90.00th=[ 38011], 95.00th=[ 45876], | 99.00th=[ 63701], 99.50th=[ 78119], 99.90th=[143655], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 48, max= 200, per=25.02%, avg=107.82, stdev=29.27, samples=115 iops : min= 12, max= 50, avg=26.51, stdev= 7.32, samples=115 lat (usec) : 50=0.10%, 100=1.04%, 250=1.66%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=1.76%, 4=6.35%, 10=15.85%, 20=34.08%, 50=36.43% lat (msec) : 100=2.25%, 250=0.20%, 1000=0.03% cpu : usr=0.10%, sys=23.46%, ctx=8807, 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=148014: Wed Aug 12 07:20:56 2026 read: IOPS=26, BW=104KiB/s (107kB/s)(6052KiB/57986msec) clat (usec): min=34, max=196023, avg=19305.02, stdev=13201.58 lat (usec): min=34, max=196024, avg=19307.28, stdev=13201.03 clat percentiles (usec): | 1.00th=[ 83], 5.00th=[ 180], 10.00th=[ 8225], 20.00th=[ 10683], | 30.00th=[ 12780], 40.00th=[ 14877], 50.00th=[ 17171], 60.00th=[ 19792], | 70.00th=[ 22676], 80.00th=[ 26608], 90.00th=[ 32637], 95.00th=[ 39060], | 99.00th=[ 65274], 99.50th=[ 82314], 99.90th=[133694], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 48, max= 151, per=25.48%, avg=104.73, stdev=25.78, samples=114 iops : min= 12, max= 37, avg=25.75, stdev= 6.40, samples=114 write: IOPS=26, BW=108KiB/s (110kB/s)(6236KiB/57986msec); 0 zone resets clat (usec): min=851, max=904595, avg=18305.28, stdev=27247.04 lat (usec): min=852, max=904597, avg=18306.69, stdev=27247.04 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 2180], 10.00th=[ 3032], 20.00th=[ 4686], | 30.00th=[ 6980], 40.00th=[ 10945], 50.00th=[ 14353], 60.00th=[ 17695], | 70.00th=[ 22152], 80.00th=[ 27919], 90.00th=[ 37487], 95.00th=[ 46400], | 99.00th=[ 67634], 99.50th=[ 81265], 99.90th=[177210], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 47, max= 191, per=25.04%, avg=107.93, stdev=32.00, samples=114 iops : min= 11, max= 47, avg=26.54, stdev= 8.04, samples=114 lat (usec) : 50=0.13%, 100=0.88%, 250=1.82%, 500=0.13%, 1000=0.10% lat (msec) : 2=1.99%, 4=6.54%, 10=15.79%, 20=35.38%, 50=34.38% lat (msec) : 100=2.57%, 250=0.26%, 1000=0.03% cpu : usr=0.11%, sys=23.16%, ctx=8831, 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=412KiB/s (422kB/s), 102KiB/s-104KiB/s (104kB/s-107kB/s), io=23.4MiB (24.6MB), run=57828-58326msec WRITE: bw=431KiB/s (441kB/s), 107KiB/s-109KiB/s (110kB/s-112kB/s), io=24.6MiB (25.7MB), run=57828-58326msec fio: pid=148018, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=148016: Wed Aug 12 07:21:27 2026 read: IOPS=16, BW=66.7KiB/s (68.3kB/s)(5992KiB/89886msec) clat (msec): min=3, max=881, avg=15.98, stdev=27.22 lat (msec): min=3, max=881, avg=15.98, stdev=27.22 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 16], 80.00th=[ 23], 90.00th=[ 36], 95.00th=[ 46], | 99.00th=[ 69], 99.50th=[ 105], 99.90th=[ 215], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 15, max= 240, per=27.92%, avg=67.57, stdev=44.42, samples=176 iops : min= 3, max= 60, avg=16.61, stdev=11.24, samples=176 write: IOPS=17, BW=70.0KiB/s (71.7kB/s)(6296KiB/89886msec); 0 zone resets clat (msec): min=14, max=205, avg=41.86, stdev=24.91 lat (msec): min=14, max=205, avg=41.86, stdev=24.91 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 51], 80.00th=[ 62], 90.00th=[ 75], 95.00th=[ 88], | 99.00th=[ 136], 99.50th=[ 159], 99.90th=[ 169], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 8, max= 168, per=27.61%, avg=70.13, stdev=39.94, samples=178 iops : min= 2, max= 42, avg=17.25, stdev=10.17, samples=178 lat (msec) : 4=1.37%, 10=24.12%, 20=18.13%, 50=38.70%, 100=16.02% lat (msec) : 250=1.63%, 1000=0.03% cpu : usr=0.12%, sys=7.94%, ctx=6046, 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=148017: Wed Aug 12 07:21:27 2026 read: IOPS=16, BW=66.0KiB/s (67.6kB/s)(5940KiB/89959msec) clat (msec): min=3, max=922, avg=16.59, stdev=29.10 lat (msec): min=3, max=922, avg=16.59, stdev=29.10 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 37], 95.00th=[ 48], | 99.00th=[ 81], 99.50th=[ 120], 99.90th=[ 192], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 248, per=27.33%, avg=66.13, stdev=45.30, samples=178 iops : min= 1, max= 62, avg=16.25, stdev=11.46, samples=178 write: IOPS=17, BW=70.6KiB/s (72.3kB/s)(6348KiB/89959msec); 0 zone resets clat (msec): min=13, max=218, avg=41.12, stdev=24.07 lat (msec): min=13, max=218, avg=41.12, stdev=24.07 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 61], 90.00th=[ 74], 95.00th=[ 87], | 99.00th=[ 114], 99.50th=[ 130], 99.90th=[ 197], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 16, max= 160, per=27.75%, avg=70.49, stdev=40.36, samples=178 iops : min= 4, max= 40, avg=17.34, stdev=10.27, samples=178 lat (msec) : 4=1.53%, 10=23.50%, 20=18.29%, 50=39.42%, 100=15.82% lat (msec) : 250=1.40%, 1000=0.03% cpu : usr=0.10%, sys=7.91%, ctx=5981, 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=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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=148018: Wed Aug 12 07:21:27 2026 read: IOPS=13, BW=52.9KiB/s (54.2kB/s)(3820KiB/72200msec) clat (msec): min=3, max=155, avg=20.56, stdev=17.38 lat (msec): min=3, max=155, avg=20.56, stdev=17.38 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 24], 80.00th=[ 31], 90.00th=[ 41], 95.00th=[ 51], | 99.00th=[ 96], 99.50th=[ 106], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 7, max= 176, per=22.17%, avg=53.65, stdev=29.43, samples=140 iops : min= 1, max= 44, avg=13.06, stdev= 7.48, samples=140 write: IOPS=13, BW=55.2KiB/s (56.5kB/s)(3984KiB/72200msec); 0 zone resets clat (msec): min=15, max=996, avg=52.72, stdev=38.30 lat (msec): min=15, max=996, avg=52.72, stdev=38.30 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 48], 60.00th=[ 55], | 70.00th=[ 62], 80.00th=[ 70], 90.00th=[ 80], 95.00th=[ 90], | 99.00th=[ 146], 99.50th=[ 174], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 8, max= 128, per=21.53%, avg=54.69, stdev=25.56, samples=142 iops : min= 2, max= 32, avg=13.32, stdev= 6.51, samples=142 lat (msec) : 4=0.20%, 10=15.16%, 20=15.06%, 50=43.29%, 100=24.28% lat (msec) : 250=1.90%, 1000=0.05% cpu : usr=0.09%, sys=7.37%, ctx=3555, majf=0, minf=19 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=956,996,0,0 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=148019: Wed Aug 12 07:21:27 2026 read: IOPS=16, BW=67.7KiB/s (69.4kB/s)(6052KiB/89337msec) clat (msec): min=3, max=139, avg=16.02, stdev=15.81 lat (msec): min=3, max=139, avg=16.02, stdev=15.81 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 25], 90.00th=[ 36], 95.00th=[ 48], | 99.00th=[ 71], 99.50th=[ 99], 99.90th=[ 138], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 7, max= 208, per=28.38%, avg=68.69, stdev=44.74, samples=175 iops : min= 1, max= 52, avg=16.88, stdev=11.34, samples=175 write: IOPS=17, BW=69.8KiB/s (71.5kB/s)(6236KiB/89337msec); 0 zone resets clat (msec): min=12, max=998, avg=41.72, stdev=33.49 lat (msec): min=12, max=998, avg=41.72, stdev=33.49 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 50], 80.00th=[ 59], 90.00th=[ 72], 95.00th=[ 84], | 99.00th=[ 115], 99.50th=[ 146], 99.90th=[ 207], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 8, max= 160, per=27.54%, avg=69.94, stdev=38.46, samples=177 iops : min= 2, max= 40, avg=17.20, stdev= 9.78, samples=177 lat (msec) : 4=0.94%, 10=24.19%, 20=17.02%, 50=41.18%, 100=15.49% lat (msec) : 250=1.14%, 1000=0.03% cpu : usr=0.11%, sys=8.02%, ctx=5978, 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=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=242KiB/s (248kB/s), 52.9KiB/s-67.7KiB/s (54.2kB/s-69.4kB/s), io=21.3MiB (22.3MB), run=72200-89959msec WRITE: bw=254KiB/s (260kB/s), 55.2KiB/s-70.6KiB/s (56.5kB/s-72.3kB/s), io=22.3MiB (23.4MB), run=72200-89959msec 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=148051: Wed Aug 12 07:21:46 2026 read: IOPS=27, BW=447KiB/s (458kB/s)(5920KiB/13231msec) clat (usec): min=39, max=71889, avg=17905.11, stdev=11980.52 lat (usec): min=39, max=71890, avg=17905.92, stdev=11980.55 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 111], 10.00th=[ 147], 20.00th=[ 9765], | 30.00th=[11994], 40.00th=[13829], 50.00th=[16450], 60.00th=[18482], | 70.00th=[21890], 80.00th=[26084], 90.00th=[31327], 95.00th=[39584], | 99.00th=[59507], 99.50th=[64226], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 224, max= 768, per=24.87%, avg=444.92, stdev=122.74, samples=26 iops : min= 14, max= 48, avg=27.42, stdev= 7.80, samples=26 write: IOPS=30, BW=481KiB/s (493kB/s)(6368KiB/13231msec); 0 zone resets clat (usec): min=1208, max=90378, avg=16455.56, stdev=13469.40 lat (usec): min=1209, max=90379, avg=16457.03, stdev=13469.47 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 2704], 10.00th=[ 3982], 20.00th=[ 5407], | 30.00th=[ 7439], 40.00th=[ 9765], 50.00th=[12780], 60.00th=[16450], | 70.00th=[20579], 80.00th=[25822], 90.00th=[32375], 95.00th=[42206], | 99.00th=[65799], 99.50th=[89654], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 192, max= 832, per=25.57%, avg=481.15, stdev=130.30, samples=26 iops : min= 12, max= 52, avg=29.69, stdev= 8.25, samples=26 lat (usec) : 50=0.13%, 100=1.30%, 250=4.43%, 500=0.13%, 750=0.13% lat (msec) : 2=1.56%, 4=3.78%, 10=19.27%, 20=35.68%, 50=31.25% lat (msec) : 100=2.34% cpu : usr=0.12%, sys=30.26%, ctx=2578, 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=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=148052: Wed Aug 12 07:21:46 2026 read: IOPS=26, BW=429KiB/s (439kB/s)(5744KiB/13387msec) clat (usec): min=71, max=109026, avg=18239.24, stdev=12248.44 lat (usec): min=72, max=109026, avg=18254.77, stdev=12254.39 clat percentiles (usec): | 1.00th=[ 84], 5.00th=[ 118], 10.00th=[ 245], 20.00th=[ 11076], | 30.00th=[ 13435], 40.00th=[ 15008], 50.00th=[ 16909], 60.00th=[ 19268], | 70.00th=[ 21365], 80.00th=[ 24249], 90.00th=[ 30540], 95.00th=[ 39584], | 99.00th=[ 53216], 99.50th=[100140], 99.90th=[108528], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 126, max= 672, per=23.70%, avg=424.00, stdev=120.51, samples=26 iops : min= 7, max= 42, avg=26.12, stdev= 7.72, samples=26 write: IOPS=30, BW=489KiB/s (501kB/s)(6544KiB/13387msec); 0 zone resets clat (usec): min=1377, max=152283, avg=16450.11, stdev=14610.32 lat (usec): min=1378, max=152285, avg=16451.73, stdev=14610.41 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 3130], 10.00th=[ 4293], 20.00th=[ 5342], | 30.00th=[ 7701], 40.00th=[ 10159], 50.00th=[ 12649], 60.00th=[ 15139], | 70.00th=[ 19268], 80.00th=[ 25822], 90.00th=[ 34341], 95.00th=[ 42730], | 99.00th=[ 67634], 99.50th=[ 78119], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 222, max= 702, per=25.34%, avg=476.81, stdev=120.40, samples=26 iops : min= 13, max= 43, avg=29.42, stdev= 7.55, samples=26 lat (usec) : 100=1.17%, 250=3.52%, 500=0.26%, 1000=0.13% lat (msec) : 2=1.69%, 4=2.60%, 10=19.40%, 20=39.06%, 50=29.95% lat (msec) : 100=1.82%, 250=0.39% cpu : usr=0.16%, sys=30.39%, ctx=2606, 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=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=148053: Wed Aug 12 07:21:46 2026 read: IOPS=29, BW=472KiB/s (483kB/s)(6256KiB/13259msec) clat (usec): min=50, max=101473, avg=18849.73, stdev=13370.60 lat (usec): min=50, max=101474, avg=18850.56, stdev=13370.67 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 111], 10.00th=[ 200], 20.00th=[ 10159], | 30.00th=[ 12518], 40.00th=[ 15139], 50.00th=[ 17433], 60.00th=[ 19268], | 70.00th=[ 21627], 80.00th=[ 26346], 90.00th=[ 32113], 95.00th=[ 41157], | 99.00th=[ 73925], 99.50th=[ 87557], 99.90th=[101188], 99.95th=[101188], | 99.99th=[101188] bw ( KiB/s): min= 319, max= 960, per=26.46%, avg=473.38, stdev=125.19, samples=26 iops : min= 19, max= 60, avg=29.19, stdev= 7.97, samples=26 write: IOPS=28, BW=455KiB/s (466kB/s)(6032KiB/13259msec); 0 zone resets clat (usec): min=1252, max=175486, avg=15534.91, stdev=14716.47 lat (usec): min=1254, max=175488, avg=15536.67, stdev=14716.45 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 3097], 10.00th=[ 4293], 20.00th=[ 5211], | 30.00th=[ 6783], 40.00th=[ 8455], 50.00th=[ 11207], 60.00th=[ 14353], | 70.00th=[ 19006], 80.00th=[ 23200], 90.00th=[ 33162], 95.00th=[ 41157], | 99.00th=[ 60031], 99.50th=[ 71828], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 191, max= 672, per=23.77%, avg=447.31, stdev=126.56, samples=26 iops : min= 11, max= 42, avg=27.58, stdev= 8.15, samples=26 lat (usec) : 100=1.43%, 250=3.91%, 500=0.39% lat (msec) : 2=1.30%, 4=2.86%, 10=22.79%, 20=35.42%, 50=29.82% lat (msec) : 100=1.82%, 250=0.26% cpu : usr=0.14%, sys=30.16%, ctx=2624, 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=148054: Wed Aug 12 07:21:46 2026 read: IOPS=29, BW=465KiB/s (476kB/s)(6032KiB/12967msec) clat (usec): min=32, max=102241, avg=18213.19, stdev=13022.65 lat (usec): min=32, max=102241, avg=18214.06, stdev=13022.69 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 104], 10.00th=[ 143], 20.00th=[ 9634], | 30.00th=[ 11994], 40.00th=[ 14353], 50.00th=[ 16909], 60.00th=[ 20317], | 70.00th=[ 23200], 80.00th=[ 26346], 90.00th=[ 31327], 95.00th=[ 37487], | 99.00th=[ 66847], 99.50th=[ 81265], 99.90th=[102237], 99.95th=[102237], | 99.99th=[102237] bw ( KiB/s): min= 285, max= 640, per=25.65%, avg=458.88, stdev=104.52, samples=25 iops : min= 17, max= 40, avg=28.28, stdev= 6.55, samples=25 write: IOPS=30, BW=482KiB/s (494kB/s)(6256KiB/12967msec); 0 zone resets clat (usec): min=981, max=73940, avg=15433.29, stdev=12371.53 lat (usec): min=982, max=73942, avg=15435.32, stdev=12371.66 clat percentiles (usec): | 1.00th=[ 2024], 5.00th=[ 3785], 10.00th=[ 4359], 20.00th=[ 5211], | 30.00th=[ 7504], 40.00th=[ 9634], 50.00th=[11338], 60.00th=[13960], | 70.00th=[17695], 80.00th=[23462], 90.00th=[33424], 95.00th=[41157], | 99.00th=[58983], 99.50th=[65274], 99.90th=[73925], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 158, max= 736, per=25.62%, avg=482.16, stdev=128.49, samples=25 iops : min= 9, max= 46, avg=29.72, stdev= 8.18, samples=25 lat (usec) : 50=0.26%, 100=1.82%, 250=4.30%, 500=0.52%, 1000=0.13% lat (msec) : 2=0.26%, 4=3.39%, 10=21.09%, 20=35.03%, 50=30.73% lat (msec) : 100=2.34%, 250=0.13% cpu : usr=0.12%, sys=30.61%, ctx=2534, 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=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=1789KiB/s (1832kB/s), 429KiB/s-472KiB/s (439kB/s-483kB/s), io=23.4MiB (24.5MB), run=12967-13387msec WRITE: bw=1882KiB/s (1928kB/s), 455KiB/s-489KiB/s (466kB/s-501kB/s), io=24.6MiB (25.8MB), run=12967-13387msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148056: Wed Aug 12 07:21:55 2026 read: IOPS=16, BW=267KiB/s (273kB/s)(5920KiB/22199msec) clat (msec): min=3, max=142, avg=16.53, stdev=17.74 lat (msec): min=3, max=142, avg=16.53, stdev=17.74 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 15], 80.00th=[ 25], 90.00th=[ 37], 95.00th=[ 52], | 99.00th=[ 90], 99.50th=[ 100], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 63, max= 672, per=24.75%, avg=266.36, stdev=137.38, samples=44 iops : min= 3, max= 42, avg=16.27, stdev= 8.83, samples=44 write: IOPS=17, BW=287KiB/s (294kB/s)(6368KiB/22199msec); 0 zone resets clat (msec): min=15, max=164, avg=40.12, stdev=20.39 lat (msec): min=15, max=164, avg=40.12, stdev=20.39 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 31], 50.00th=[ 34], 60.00th=[ 38], | 70.00th=[ 43], 80.00th=[ 52], 90.00th=[ 64], 95.00th=[ 85], | 99.00th=[ 115], 99.50th=[ 155], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 64, max= 544, per=25.42%, avg=287.73, stdev=134.52, samples=44 iops : min= 4, max= 34, avg=17.61, stdev= 8.67, samples=44 lat (msec) : 4=0.65%, 10=25.26%, 20=11.33%, 50=49.22%, 100=12.24% lat (msec) : 250=1.30% cpu : usr=0.09%, sys=9.62%, ctx=1693, 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=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=148057: Wed Aug 12 07:21:55 2026 read: IOPS=16, BW=258KiB/s (264kB/s)(5744KiB/22258msec) clat (msec): min=3, max=136, avg=16.24, stdev=18.21 lat (msec): min=3, max=136, avg=16.24, stdev=18.21 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 9], 60.00th=[ 11], | 70.00th=[ 16], 80.00th=[ 23], 90.00th=[ 43], 95.00th=[ 57], | 99.00th=[ 94], 99.50th=[ 123], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 52, max= 608, per=23.92%, avg=257.41, stdev=150.09, samples=44 iops : min= 3, max= 38, avg=15.73, stdev= 9.61, samples=44 write: IOPS=18, BW=294KiB/s (301kB/s)(6544KiB/22258msec); 0 zone resets clat (msec): min=15, max=191, avg=39.95, stdev=19.63 lat (msec): min=15, max=191, avg=39.95, stdev=19.63 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 34], 60.00th=[ 39], | 70.00th=[ 44], 80.00th=[ 53], 90.00th=[ 64], 95.00th=[ 79], | 99.00th=[ 109], 99.50th=[ 116], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 126, max= 544, per=25.90%, avg=293.16, stdev=128.51, samples=44 iops : min= 7, max= 34, avg=17.95, stdev= 8.31, samples=44 lat (msec) : 4=0.78%, 10=26.30%, 20=10.16%, 50=48.31%, 100=13.28% lat (msec) : 250=1.17% cpu : usr=0.10%, sys=9.27%, ctx=1654, 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=148058: Wed Aug 12 07:21:55 2026 read: IOPS=17, BW=285KiB/s (292kB/s)(6256KiB/21934msec) clat (usec): min=3914, max=99450, avg=15015.50, stdev=13938.37 lat (usec): min=3916, max=99451, avg=15016.59, stdev=13938.54 clat percentiles (usec): | 1.00th=[ 4047], 5.00th=[ 4555], 10.00th=[ 5014], 20.00th=[ 5866], | 30.00th=[ 6783], 40.00th=[ 7767], 50.00th=[ 9110], 60.00th=[11469], | 70.00th=[14877], 80.00th=[22938], 90.00th=[32637], 95.00th=[45876], | 99.00th=[68682], 99.50th=[72877], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 95, max= 800, per=26.79%, avg=288.23, stdev=162.93, samples=43 iops : min= 5, max= 50, avg=17.65, stdev=10.36, samples=43 write: IOPS=17, BW=275KiB/s (282kB/s)(6032KiB/21934msec); 0 zone resets clat (msec): min=16, max=192, avg=42.24, stdev=21.65 lat (msec): min=16, max=192, avg=42.25, stdev=21.65 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 30], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 40], | 70.00th=[ 45], 80.00th=[ 55], 90.00th=[ 71], 95.00th=[ 87], | 99.00th=[ 122], 99.50th=[ 150], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 63, max= 480, per=24.16%, avg=273.49, stdev=123.78, samples=43 iops : min= 3, max= 30, avg=16.72, stdev= 8.00, samples=43 lat (msec) : 4=0.26%, 10=26.95%, 20=12.11%, 50=46.74%, 100=13.02% lat (msec) : 250=0.91% cpu : usr=0.11%, sys=9.44%, ctx=1601, 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=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=148059: Wed Aug 12 07:21:55 2026 read: IOPS=17, BW=276KiB/s (282kB/s)(6032KiB/21878msec) clat (msec): min=3, max=127, avg=16.01, stdev=15.84 lat (msec): min=3, max=127, avg=16.02, stdev=15.84 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 10], 60.00th=[ 13], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 36], 95.00th=[ 49], | 99.00th=[ 81], 99.50th=[ 102], 99.90th=[ 128], 99.95th=[ 128], | 99.99th=[ 128] bw ( KiB/s): min= 95, max= 672, per=25.41%, avg=273.44, stdev=134.91, samples=43 iops : min= 5, max= 42, avg=16.72, stdev= 8.61, samples=43 write: IOPS=17, BW=286KiB/s (293kB/s)(6256KiB/21878msec); 0 zone resets clat (msec): min=14, max=137, avg=40.23, stdev=18.99 lat (msec): min=14, max=137, avg=40.23, stdev=18.99 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 24], 20.00th=[ 27], | 30.00th=[ 30], 40.00th=[ 32], 50.00th=[ 35], 60.00th=[ 39], | 70.00th=[ 44], 80.00th=[ 53], 90.00th=[ 64], 95.00th=[ 78], | 99.00th=[ 113], 99.50th=[ 129], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 95, max= 544, per=25.18%, avg=285.05, stdev=124.87, samples=43 iops : min= 5, max= 34, avg=17.44, stdev= 8.07, samples=43 lat (msec) : 4=0.52%, 10=24.87%, 20=12.37%, 50=49.22%, 100=11.72% lat (msec) : 250=1.30% cpu : usr=0.09%, sys=9.54%, ctx=1674, 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=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=1076KiB/s (1102kB/s), 258KiB/s-285KiB/s (264kB/s-292kB/s), io=23.4MiB (24.5MB), run=21878-22258msec WRITE: bw=1132KiB/s (1159kB/s), 275KiB/s-294KiB/s (282kB/s-301kB/s), io=24.6MiB (25.8MB), run=21878-22258msec 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=148068: Wed Aug 12 07:22:04 2026 read: IOPS=2, BW=2355KiB/s (2411kB/s)(7168KiB/3044msec) clat (usec): min=456, max=209224, avg=93530.86, stdev=84330.88 lat (usec): min=457, max=209226, avg=93532.18, stdev=84330.96 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 457], 10.00th=[ 457], 20.00th=[ 7963], | 30.00th=[ 72877], 40.00th=[ 72877], 50.00th=[ 74974], 60.00th=[ 84411], | 70.00th=[ 84411], 80.00th=[204473], 90.00th=[208667], 95.00th=[208667], | 99.00th=[208667], 99.50th=[208667], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 4096, max= 5305, per=80.23%, avg=4700.50, stdev=854.89, samples=2 iops : min= 4, max= 5, avg= 4.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1682KiB/s (1722kB/s)(5120KiB/3044msec); 0 zone resets clat (msec): min=233, max=838, avg=461.23, stdev=231.09 lat (msec): min=234, max=838, avg=461.31, stdev=231.09 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 1980, max= 2048, per=24.62%, avg=2019.67, stdev=35.39, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (usec) : 500=8.33% lat (msec) : 10=8.33%, 100=25.00%, 250=25.00%, 500=25.00%, 1000=8.33% cpu : usr=0.03%, sys=31.78%, ctx=1132, 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=148069: Wed Aug 12 07:22:04 2026 read: IOPS=0, BW=586KiB/s (600kB/s)(2048KiB/3495msec) clat (usec): min=540, max=822982, avg=411761.84, stdev=581554.27 lat (usec): min=541, max=822985, avg=411763.35, stdev=581555.44 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 545], | 30.00th=[ 545], 40.00th=[ 545], 50.00th=[ 545], 60.00th=[826278], | 70.00th=[826278], 80.00th=[826278], 90.00th=[826278], 95.00th=[826278], | 99.00th=[826278], 99.50th=[826278], 99.90th=[826278], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 2048, max= 2048, per=34.95%, avg=2048.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2930KiB/s (3000kB/s)(10.0MiB/3495msec); 0 zone resets clat (msec): min=120, max=546, avg=265.65, stdev=145.71 lat (msec): min=120, max=546, avg=265.74, stdev=145.71 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 157], | 30.00th=[ 163], 40.00th=[ 165], 50.00th=[ 190], 60.00th=[ 194], | 70.00th=[ 317], 80.00th=[ 347], 90.00th=[ 460], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1980, max= 6144, per=43.38%, avg=3558.75, stdev=1975.91, samples=4 iops : min= 1, max= 6, avg= 3.00, stdev= 2.16, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=38.04%, ctx=628, 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=148070: Wed Aug 12 07:22:04 2026 read: IOPS=2, BW=2166KiB/s (2218kB/s)(6144KiB/2837msec) clat (usec): min=507, max=215396, avg=113797.79, stdev=92321.53 lat (usec): min=508, max=215397, avg=113798.66, stdev=92321.43 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[135267], 50.00th=[135267], 60.00th=[145753], | 70.00th=[185598], 80.00th=[185598], 90.00th=[214959], 95.00th=[214959], | 99.00th=[214959], 99.50th=[214959], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 2031, max= 3961, per=45.74%, avg=2680.00, stdev=1109.41, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=2, BW=2166KiB/s (2218kB/s)(6144KiB/2837msec); 0 zone resets clat (msec): min=140, max=1022, avg=351.47, stdev=337.14 lat (msec): min=140, max=1022, avg=351.52, stdev=337.15 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 239], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 1980, max= 4096, per=30.95%, avg=2538.75, stdev=1038.57, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (usec) : 750=16.67% lat (msec) : 250=66.67%, 500=8.33%, 2000=8.33% cpu : usr=0.00%, sys=33.39%, ctx=663, 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=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=148071: Wed Aug 12 07:22:04 2026 read: IOPS=1, BW=1901KiB/s (1946kB/s)(5120KiB/2694msec) clat (usec): min=432, max=411477, avg=123540.42, stdev=183043.34 lat (usec): min=433, max=411478, avg=123541.28, stdev=183043.46 clat percentiles (usec): | 1.00th=[ 433], 5.00th=[ 433], 10.00th=[ 433], 20.00th=[ 433], | 30.00th=[ 494], 40.00th=[ 494], 50.00th=[ 2802], 60.00th=[ 2802], | 70.00th=[202376], 80.00th=[202376], 90.00th=[413139], 95.00th=[413139], | 99.00th=[413139], 99.50th=[413139], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 2031, max= 5941, per=68.03%, avg=3986.00, stdev=2764.79, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2661KiB/s (2725kB/s)(7168KiB/2694msec); 0 zone resets clat (msec): min=101, max=990, avg=287.63, stdev=312.26 lat (msec): min=101, max=990, avg=287.71, stdev=312.26 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 150], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 184], 60.00th=[ 188], | 70.00th=[ 188], 80.00th=[ 230], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 2048, max= 6144, per=49.38%, avg=4051.00, stdev=2049.48, samples=3 iops : min= 2, max= 6, avg= 3.67, stdev= 2.08, samples=3 lat (usec) : 500=16.67% lat (msec) : 4=8.33%, 250=58.33%, 500=8.33%, 1000=8.33% cpu : usr=0.04%, sys=37.80%, ctx=225, 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=5860KiB/s (6000kB/s), 586KiB/s-2355KiB/s (600kB/s-2411kB/s), io=20.0MiB (20.0MB), run=2694-3495msec WRITE: bw=8204KiB/s (8401kB/s), 1682KiB/s-2930KiB/s (1722kB/s-3000kB/s), io=28.0MiB (29.4MB), run=2694-3495msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148072: Wed Aug 12 07:22:04 2026 read: IOPS=2, BW=2878KiB/s (2947kB/s)(7168KiB/2491msec) clat (msec): min=54, max=435, avg=164.78, stdev=140.31 lat (msec): min=54, max=435, avg=164.78, stdev=140.31 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 56], | 30.00th=[ 77], 40.00th=[ 77], 50.00th=[ 116], 60.00th=[ 150], | 70.00th=[ 150], 80.00th=[ 268], 90.00th=[ 435], 95.00th=[ 435], | 99.00th=[ 435], 99.50th=[ 435], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 1973, max= 5260, per=55.76%, avg=3093.67, stdev=1876.47, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=2, BW=2055KiB/s (2105kB/s)(5120KiB/2491msec); 0 zone resets clat (msec): min=76, max=654, avg=264.06, stdev=237.16 lat (msec): min=76, max=654, avg=264.13, stdev=237.15 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 120], 40.00th=[ 120], 50.00th=[ 150], 60.00th=[ 150], | 70.00th=[ 321], 80.00th=[ 321], 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= 2048, max= 6144, per=52.73%, avg=4096.00, stdev=2896.31, samples=2 iops : min= 2, max= 6, avg= 4.00, stdev= 2.83, samples=2 lat (msec) : 100=33.33%, 250=33.33%, 500=25.00%, 750=8.33% cpu : usr=0.04%, sys=13.82%, ctx=90, 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=148073: Wed Aug 12 07:22:04 2026 read: IOPS=0, BW=560KiB/s (573kB/s)(2048KiB/3659msec) clat (msec): min=86, max=765, avg=426.05, stdev=480.40 lat (msec): min=86, max=765, avg=426.06, stdev=480.40 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 87], | 30.00th=[ 87], 40.00th=[ 87], 50.00th=[ 87], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1932, max= 2048, per=35.87%, avg=1990.00, stdev=82.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2799KiB/s (2866kB/s)(10.0MiB/3659msec); 0 zone resets clat (msec): min=75, max=850, avg=270.28, stdev=251.92 lat (msec): min=75, max=850, avg=270.38, stdev=251.90 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 92], | 30.00th=[ 125], 40.00th=[ 140], 50.00th=[ 150], 60.00th=[ 163], | 70.00th=[ 232], 80.00th=[ 292], 90.00th=[ 584], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 2043, max= 8192, per=58.56%, avg=4548.75, stdev=2596.53, samples=4 iops : min= 1, max= 8, avg= 4.00, stdev= 2.94, samples=4 lat (msec) : 100=25.00%, 250=41.67%, 500=8.33%, 750=8.33%, 1000=16.67% cpu : usr=0.03%, sys=13.81%, ctx=375, 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=148074: Wed Aug 12 07:22:04 2026 read: IOPS=1, BW=1665KiB/s (1705kB/s)(6144KiB/3691msec) clat (msec): min=46, max=660, avg=170.91, stdev=241.03 lat (msec): min=46, max=660, avg=170.91, stdev=241.03 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 53], | 30.00th=[ 53], 40.00th=[ 59], 50.00th=[ 59], 60.00th=[ 97], | 70.00th=[ 111], 80.00th=[ 111], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 4087, max= 6144, per=92.20%, avg=5115.50, stdev=1454.52, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1665KiB/s (1705kB/s)(6144KiB/3691msec); 0 zone resets clat (msec): min=58, max=1371, avg=431.54, stdev=471.05 lat (msec): min=58, max=1371, avg=431.64, stdev=471.03 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 326], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 1973, max= 4087, per=32.69%, avg=2539.00, stdev=1032.61, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 50=8.33%, 100=33.33%, 250=16.67%, 500=25.00%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.03%, sys=11.54%, ctx=110, 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=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=148075: Wed Aug 12 07:22:04 2026 read: IOPS=1, BW=1447KiB/s (1482kB/s)(5120KiB/3538msec) clat (msec): min=39, max=595, avg=201.05, stdev=231.58 lat (msec): min=39, max=595, avg=201.05, stdev=231.58 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 40], 10.00th=[ 40], 20.00th=[ 40], | 30.00th=[ 57], 40.00th=[ 57], 50.00th=[ 94], 60.00th=[ 94], | 70.00th=[ 222], 80.00th=[ 222], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 2043, max= 5796, per=70.65%, avg=3919.50, stdev=2653.77, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=2026KiB/s (2075kB/s)(7168KiB/3538msec); 0 zone resets clat (msec): min=72, max=1401, avg=355.21, stdev=470.23 lat (msec): min=73, max=1401, avg=355.29, stdev=470.22 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 128], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 153], 60.00th=[ 266], | 70.00th=[ 266], 80.00th=[ 338], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 1973, max= 4096, per=34.81%, avg=2704.00, stdev=1206.02, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 50=8.33%, 100=25.00%, 250=33.33%, 500=16.67%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.03%, sys=14.42%, ctx=124, 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=5549KiB/s (5682kB/s), 560KiB/s-2878KiB/s (573kB/s-2947kB/s), io=20.0MiB (20.0MB), run=2491-3691msec WRITE: bw=7768KiB/s (7955kB/s), 1665KiB/s-2799KiB/s (1705kB/s-2866kB/s), io=28.0MiB (29.4MB), run=2491-3691msec 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=148082: Wed Aug 12 07:22:14 2026 read: IOPS=1, BW=4362KiB/s (4467kB/s)(12.0MiB/2817msec) clat (msec): min=627, max=1427, avg=921.84, stdev=440.22 lat (msec): min=627, max=1427, avg=921.85, stdev=440.22 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=9.41%, ctx=90, 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=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=148084: Wed Aug 12 07:22:14 2026 read: IOPS=0, BW=1398KiB/s (1432kB/s)(4096KiB/2930msec) clat (nsec): min=1794.5M, max=1794.5M, avg=1794460971.00, stdev= 0.00 lat (nsec): min=1794.5M, max=1794.5M, avg=1794463254.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1787], 5.00th=[ 1787], 10.00th=[ 1787], 20.00th=[ 1787], | 30.00th=[ 1787], 40.00th=[ 1787], 50.00th=[ 1787], 60.00th=[ 1787], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] 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=2796KiB/s (2863kB/s)(8192KiB/2930msec); 0 zone resets clat (msec): min=311, max=756, avg=533.91, stdev=315.15 lat (msec): min=311, max=757, avg=534.23, stdev=315.07 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7907, max= 7907, per=73.91%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=11.98%, ctx=104, 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=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=148086: Wed Aug 12 07:22:14 2026 write: IOPS=0, BW=4012KiB/s (4108kB/s)(12.0MiB/3063msec); 0 zone resets clat (msec): min=187, max=2329, avg=1003.37, stdev=1158.32 lat (msec): min=187, max=2329, avg=1003.79, stdev=1158.43 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 493], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min=15814, max=15814, per=100.00%, avg=15814.00, 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=0.03%, sys=9.11%, ctx=75, 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=148088: Wed Aug 12 07:22:14 2026 write: IOPS=1, BW=4686KiB/s (4799kB/s)(12.0MiB/2622msec); 0 zone resets clat (msec): min=477, max=1469, avg=868.45, stdev=528.28 lat (msec): min=478, max=1470, avg=868.86, stdev=528.41 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8192, max= 8192, per=76.58%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=11.87%, ctx=63, 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=5592KiB/s (5726kB/s), 1398KiB/s-4362KiB/s (1432kB/s-4467kB/s), io=16.0MiB (16.8MB), run=2817-2930msec WRITE: bw=10.4MiB/s (10.0MB/s), 2796KiB/s-4686KiB/s (2863kB/s-4799kB/s), io=32.0MiB (33.6MB), run=2622-3063msec rand-rw: (groupid=0, jobs=1): err= 0: pid=148081: Wed Aug 12 07:22:14 2026 read: IOPS=1, BW=7042KiB/s (7211kB/s)(12.0MiB/1745msec) clat (msec): min=298, max=1068, avg=578.52, stdev=425.44 lat (msec): min=298, max=1068, avg=578.52, stdev=425.44 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 1070], 80.00th=[ 1070], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=42.78%, ctx=2778, 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=148083: Wed Aug 12 07:22:14 2026 read: IOPS=0, BW=1493KiB/s (1529kB/s)(4096KiB/2743msec) clat (nsec): min=1130.3M, max=1130.3M, avg=1130274010.00, stdev= 0.00 lat (nsec): min=1130.3M, max=1130.3M, avg=1130275585.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1133], 5.00th=[ 1133], 10.00th=[ 1133], 20.00th=[ 1133], | 30.00th=[ 1133], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] 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=2987KiB/s (3058kB/s)(8192KiB/2743msec); 0 zone resets clat (msec): min=320, max=1232, avg=776.74, stdev=645.05 lat (msec): min=321, max=1233, avg=777.14, stdev=644.97 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 1234], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7907, max= 7907, per=71.29%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=18.60%, ctx=762, 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=148085: Wed Aug 12 07:22:14 2026 write: IOPS=1, BW=4160KiB/s (4260kB/s)(12.0MiB/2954msec); 0 zone resets clat (msec): min=263, max=2048, avg=966.58, stdev=951.14 lat (msec): min=263, max=2049, avg=966.97, stdev=951.12 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 2056], 80.00th=[ 2056], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7907, max= 8175, per=72.49%, avg=8041.00, stdev=189.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=9.79%, ctx=63, 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=148087: Wed Aug 12 07:22:14 2026 write: IOPS=1, BW=4353KiB/s (4457kB/s)(12.0MiB/2823msec); 0 zone resets clat (msec): min=171, max=2028, avg=919.81, stdev=979.41 lat (msec): min=171, max=2029, avg=920.38, stdev=979.70 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 2022], 80.00th=[ 2022], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 7907, max= 8175, per=72.49%, avg=8041.00, stdev=189.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.04%, sys=11.13%, ctx=72, 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=5973KiB/s (6116kB/s), 1493KiB/s-7042KiB/s (1529kB/s-7211kB/s), io=16.0MiB (16.8MB), run=1745-2743msec WRITE: bw=10.8MiB/s (11.4MB/s), 2987KiB/s-4353KiB/s (3058kB/s-4457kB/s), io=32.0MiB (33.6MB), run=2743-2954msec