== sanity test 398b: DIO and buffer IO race ============== 17:18:03 (1781212683) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.92958 s, 12.8 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=145430: Thu Jun 11 17:20:53 2026 read: IOPS=9, BW=38.6KiB/s (39.5kB/s)(5992KiB/155206msec) clat (usec): min=32, max=698070, avg=51795.38, stdev=49733.80 lat (usec): min=32, max=698072, avg=51798.24, stdev=49734.01 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 58], 10.00th=[ 537], 20.00th=[ 22152], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 41681], 60.00th=[ 50594], | 70.00th=[ 60031], 80.00th=[ 73925], 90.00th=[ 98042], 95.00th=[122160], | 99.00th=[229639], 99.50th=[295699], 99.90th=[608175], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 6, max= 126, per=25.51%, avg=39.28, stdev=20.20, samples=296 iops : min= 1, max= 31, avg= 9.17, stdev= 5.08, samples=296 write: IOPS=10, BW=40.6KiB/s (41.5kB/s)(6296KiB/155206msec); 0 zone resets clat (usec): min=830, max=1171.3k, avg=49049.33, stdev=57403.12 lat (usec): min=831, max=1171.3k, avg=49051.86, stdev=57402.32 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1352], 10.00th=[ 1827], | 20.00th=[ 4555], 30.00th=[ 9372], 40.00th=[ 22152], | 50.00th=[ 35914], 60.00th=[ 49021], 70.00th=[ 64226], | 80.00th=[ 82314], 90.00th=[ 115868], 95.00th=[ 147850], | 99.00th=[ 223347], 99.50th=[ 248513], 99.90th=[ 308282], | 99.95th=[1166017], 99.99th=[1166017] bw ( KiB/s): min= 7, max= 148, per=25.03%, avg=40.29, stdev=20.64, samples=303 iops : min= 1, max= 37, avg= 9.42, stdev= 5.19, samples=303 lat (usec) : 50=0.52%, 100=3.87%, 250=0.29%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.16% lat (msec) : 2=5.83%, 4=3.65%, 10=6.71%, 20=7.23%, 50=31.67% lat (msec) : 100=28.26%, 250=11.04%, 500=0.46%, 750=0.10%, 2000=0.03% cpu : usr=0.06%, sys=4.52%, ctx=6418, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145431: Thu Jun 11 17:20:53 2026 read: IOPS=9, BW=38.0KiB/s (39.9kB/s)(5940KiB/152308msec) clat (usec): min=31, max=374398, avg=50439.39, stdev=43379.49 lat (usec): min=31, max=374399, avg=50442.41, stdev=43378.67 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 58], 10.00th=[ 96], 20.00th=[ 20317], | 30.00th=[ 26870], 40.00th=[ 33817], 50.00th=[ 41681], 60.00th=[ 50070], | 70.00th=[ 60556], 80.00th=[ 74974], 90.00th=[ 98042], 95.00th=[125305], | 99.00th=[212861], 99.50th=[254804], 99.90th=[371196], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 7, max= 94, per=25.49%, avg=39.26, stdev=19.15, samples=293 iops : min= 1, max= 23, avg= 9.16, stdev= 4.82, samples=293 write: IOPS=10, BW=41.7KiB/s (42.7kB/s)(6348KiB/152308msec); 0 zone resets clat (usec): min=882, max=1176.9k, avg=48499.22, stdev=58386.33 lat (usec): min=904, max=1176.9k, avg=48507.32, stdev=58382.23 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1385], 10.00th=[ 1942], | 20.00th=[ 5669], 30.00th=[ 11076], 40.00th=[ 21890], | 50.00th=[ 34866], 60.00th=[ 46924], 70.00th=[ 62653], | 80.00th=[ 80217], 90.00th=[ 113771], 95.00th=[ 137364], | 99.00th=[ 227541], 99.50th=[ 287310], 99.90th=[ 624952], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 7, max= 127, per=26.16%, avg=42.11, stdev=20.66, samples=292 iops : min= 1, max= 31, avg= 9.89, stdev= 5.20, samples=292 lat (usec) : 50=0.65%, 100=4.23%, 250=0.33%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.23% lat (msec) : 2=5.21%, 4=3.03%, 10=6.87%, 20=8.50%, 50=31.84% lat (msec) : 100=27.54%, 250=10.74%, 500=0.62%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=4.32%, ctx=6320, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145432: Thu Jun 11 17:20:53 2026 read: IOPS=9, BW=39.4KiB/s (40.3kB/s)(6028KiB/153062msec) clat (usec): min=27, max=595473, avg=49439.48, stdev=44933.05 lat (usec): min=27, max=595475, avg=49442.20, stdev=44932.83 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 57], 10.00th=[ 83], 20.00th=[ 20055], | 30.00th=[ 26870], 40.00th=[ 32900], 50.00th=[ 39584], 60.00th=[ 47449], | 70.00th=[ 58983], 80.00th=[ 72877], 90.00th=[100140], 95.00th=[124257], | 99.00th=[200279], 99.50th=[235930], 99.90th=[455082], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 7, max= 110, per=25.39%, avg=39.09, stdev=20.20, samples=298 iops : min= 1, max= 27, avg= 9.12, stdev= 5.07, samples=298 write: IOPS=10, BW=40.9KiB/s (41.9kB/s)(6260KiB/153062msec); 0 zone resets clat (usec): min=775, max=1208.1k, avg=49915.69, stdev=59911.63 lat (usec): min=775, max=1208.1k, avg=49921.81, stdev=59908.90 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1369], 10.00th=[ 1909], | 20.00th=[ 4752], 30.00th=[ 10028], 40.00th=[ 21627], | 50.00th=[ 34866], 60.00th=[ 49021], 70.00th=[ 66323], | 80.00th=[ 85459], 90.00th=[ 112722], 95.00th=[ 147850], | 99.00th=[ 238027], 99.50th=[ 263193], 99.90th=[ 446694], | 99.95th=[1216349], 99.99th=[1216349] bw ( KiB/s): min= 7, max= 119, per=25.54%, avg=41.12, stdev=20.39, samples=294 iops : min= 1, max= 29, avg= 9.63, stdev= 5.13, samples=294 lat (usec) : 50=0.94%, 100=4.26%, 250=0.29%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=5.24%, 4=3.94%, 10=6.15%, 20=8.37%, 50=31.74% lat (msec) : 100=26.40%, 250=11.78%, 500=0.52%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=4.21%, ctx=6298, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145433: Thu Jun 11 17:20:53 2026 read: IOPS=9, BW=39.3KiB/s (40.2kB/s)(6052KiB/154070msec) clat (usec): min=31, max=1210.5k, avg=51058.80, stdev=52939.08 lat (usec): min=32, max=1210.5k, avg=51064.45, stdev=52938.54 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 57], 10.00th=[ 76], | 20.00th=[ 20317], 30.00th=[ 27657], 40.00th=[ 33817], | 50.00th=[ 41681], 60.00th=[ 50070], 70.00th=[ 60031], | 80.00th=[ 73925], 90.00th=[ 100140], 95.00th=[ 125305], | 99.00th=[ 219153], 99.50th=[ 265290], 99.90th=[ 488637], | 99.95th=[1216349], 99.99th=[1216349] bw ( KiB/s): min= 7, max= 102, per=25.72%, avg=39.61, stdev=19.46, samples=295 iops : min= 1, max= 25, avg= 9.25, stdev= 4.90, samples=295 write: IOPS=10, BW=40.5KiB/s (41.4kB/s)(6236KiB/154070msec); 0 zone resets clat (usec): min=892, max=851708, avg=48943.37, stdev=54924.56 lat (usec): min=893, max=851710, avg=48950.13, stdev=54925.88 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1352], 10.00th=[ 1549], 20.00th=[ 4228], | 30.00th=[ 10159], 40.00th=[ 23462], 50.00th=[ 36439], 60.00th=[ 49021], | 70.00th=[ 64226], 80.00th=[ 81265], 90.00th=[114820], 95.00th=[143655], | 99.00th=[240124], 99.50th=[295699], 99.90th=[417334], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 7, max= 126, per=25.15%, avg=40.50, stdev=20.31, samples=297 iops : min= 1, max= 31, avg= 9.48, stdev= 5.11, samples=297 lat (usec) : 50=0.81%, 100=4.30%, 250=0.42%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=6.38%, 4=3.29%, 10=5.60%, 20=7.68%, 50=31.61% lat (msec) : 100=27.99%, 250=11.07%, 500=0.52%, 1000=0.03%, 2000=0.03% cpu : usr=0.06%, sys=4.52%, ctx=6366, majf=0, minf=18 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=155KiB/s (158kB/s), 38.6KiB/s-39.4KiB/s (39.5kB/s-40.3kB/s), io=23.4MiB (24.6MB), run=152308-155206msec WRITE: bw=162KiB/s (166kB/s), 40.5KiB/s-41.7KiB/s (41.4kB/s-42.7kB/s), io=24.6MiB (25.7MB), run=152308-155206msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145435: Thu Jun 11 17:23:40 2026 read: IOPS=4, BW=18.6KiB/s (19.1kB/s)(5992KiB/321588msec) clat (msec): min=5, max=1336, avg=42.90, stdev=58.90 lat (msec): min=5, max=1336, avg=42.91, stdev=58.90 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 54], 90.00th=[ 91], 95.00th=[ 128], | 99.00th=[ 259], 99.50th=[ 359], 99.90th=[ 592], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7, max= 104, per=30.05%, avg=22.24, stdev=15.81, samples=517 iops : min= 1, max= 26, avg= 4.93, stdev= 3.99, samples=517 write: IOPS=4, BW=19.6KiB/s (20.0kB/s)(6296KiB/321588msec); 0 zone resets clat (msec): min=39, max=1082, avg=163.38, stdev=97.17 lat (msec): min=39, max=1082, avg=163.39, stdev=97.17 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 70], 10.00th=[ 82], 20.00th=[ 96], | 30.00th=[ 109], 40.00th=[ 123], 50.00th=[ 138], 60.00th=[ 159], | 70.00th=[ 180], 80.00th=[ 218], 90.00th=[ 275], 95.00th=[ 334], | 99.00th=[ 527], 99.50th=[ 651], 99.90th=[ 936], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 4, max= 56, per=25.22%, avg=19.67, stdev= 9.65, samples=611 iops : min= 1, max= 14, avg= 4.28, stdev= 2.47, samples=611 lat (msec) : 10=2.15%, 20=14.58%, 50=21.71%, 100=17.74%, 250=36.78% lat (msec) : 500=6.38%, 750=0.46%, 1000=0.13%, 2000=0.07% cpu : usr=0.04%, sys=1.12%, ctx=5233, 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=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=145436: Thu Jun 11 17:23:40 2026 read: IOPS=4, BW=18.5KiB/s (18.0kB/s)(5940KiB/320666msec) clat (msec): min=6, max=1308, avg=41.22, stdev=52.67 lat (msec): min=6, max=1308, avg=41.22, stdev=52.67 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 54], 90.00th=[ 90], 95.00th=[ 123], | 99.00th=[ 215], 99.50th=[ 271], 99.90th=[ 342], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 87, per=31.02%, avg=22.96, stdev=15.74, samples=497 iops : min= 1, max= 21, avg= 5.10, stdev= 3.96, samples=497 write: IOPS=4, BW=19.8KiB/s (20.3kB/s)(6348KiB/320666msec); 0 zone resets clat (msec): min=31, max=998, avg=163.39, stdev=94.38 lat (msec): min=31, max=998, avg=163.39, stdev=94.38 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 68], 10.00th=[ 82], 20.00th=[ 97], | 30.00th=[ 111], 40.00th=[ 125], 50.00th=[ 140], 60.00th=[ 155], | 70.00th=[ 182], 80.00th=[ 215], 90.00th=[ 271], 95.00th=[ 334], | 99.00th=[ 523], 99.50th=[ 642], 99.90th=[ 911], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 48, per=25.35%, avg=19.77, stdev= 9.56, samples=613 iops : min= 1, max= 12, avg= 4.30, stdev= 2.46, samples=613 lat (msec) : 10=2.12%, 20=14.71%, 50=21.58%, 100=17.58%, 250=36.98% lat (msec) : 500=6.38%, 750=0.49%, 1000=0.13%, 2000=0.03% cpu : usr=0.04%, sys=1.11%, ctx=5157, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145437: Thu Jun 11 17:23:40 2026 read: IOPS=4, BW=18.8KiB/s (19.3kB/s)(6028KiB/319887msec) clat (msec): min=5, max=833, avg=44.06, stdev=50.40 lat (msec): min=5, max=833, avg=44.07, stdev=50.41 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 44], 80.00th=[ 64], 90.00th=[ 97], 95.00th=[ 130], | 99.00th=[ 230], 99.50th=[ 284], 99.90th=[ 498], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7, max= 95, per=29.36%, avg=21.73, stdev=15.85, samples=533 iops : min= 1, max= 23, avg= 4.79, stdev= 3.99, samples=533 write: IOPS=4, BW=19.6KiB/s (20.0kB/s)(6260KiB/319887msec); 0 zone resets clat (msec): min=43, max=1405, avg=161.87, stdev=97.77 lat (msec): min=43, max=1405, avg=161.87, stdev=97.77 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 69], 10.00th=[ 81], 20.00th=[ 95], | 30.00th=[ 110], 40.00th=[ 124], 50.00th=[ 136], 60.00th=[ 155], | 70.00th=[ 178], 80.00th=[ 211], 90.00th=[ 271], 95.00th=[ 334], | 99.00th=[ 477], 99.50th=[ 625], 99.90th=[ 1167], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 4, max= 48, per=25.58%, avg=19.95, stdev= 9.91, samples=600 iops : min= 1, max= 12, avg= 4.35, stdev= 2.54, samples=600 lat (msec) : 10=2.02%, 20=14.13%, 50=20.28%, 100=20.25%, 250=36.43% lat (msec) : 500=6.45%, 750=0.29%, 1000=0.10%, 2000=0.07% cpu : usr=0.04%, sys=1.15%, ctx=5164, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145438: Thu Jun 11 17:23:40 2026 read: IOPS=4, BW=18.9KiB/s (19.3kB/s)(6052KiB/320496msec) clat (msec): min=5, max=946, avg=43.69, stdev=51.03 lat (msec): min=5, max=946, avg=43.69, stdev=51.03 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 60], 90.00th=[ 95], 95.00th=[ 142], | 99.00th=[ 239], 99.50th=[ 284], 99.90th=[ 485], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 6, max= 87, per=30.15%, avg=22.31, stdev=15.80, samples=521 iops : min= 1, max= 21, avg= 4.93, stdev= 3.97, samples=521 write: IOPS=4, BW=19.5KiB/s (19.9kB/s)(6236KiB/320496msec); 0 zone resets clat (msec): min=34, max=1501, avg=163.09, stdev=98.96 lat (msec): min=34, max=1501, avg=163.09, stdev=98.96 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 70], 10.00th=[ 83], 20.00th=[ 99], | 30.00th=[ 111], 40.00th=[ 126], 50.00th=[ 140], 60.00th=[ 155], | 70.00th=[ 178], 80.00th=[ 211], 90.00th=[ 271], 95.00th=[ 338], | 99.00th=[ 514], 99.50th=[ 659], 99.90th=[ 1053], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 4, max= 48, per=24.99%, avg=19.49, stdev= 9.54, samples=611 iops : min= 1, max= 12, avg= 4.23, stdev= 2.45, samples=611 lat (msec) : 10=1.92%, 20=14.42%, 50=21.45%, 100=18.20%, 250=37.47% lat (msec) : 500=5.92%, 750=0.42%, 1000=0.13%, 2000=0.07% cpu : usr=0.04%, sys=1.11%, ctx=5063, 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=74.7KiB/s (76.5kB/s), 18.5KiB/s-18.9KiB/s (18.0kB/s-19.3kB/s), io=23.4MiB (24.6MB), run=319887-321588msec WRITE: bw=78.2KiB/s (80.1kB/s), 19.5KiB/s-19.8KiB/s (19.9kB/s-20.3kB/s), io=24.6MiB (25.7MB), run=319887-321588msec 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=145504: Thu Jun 11 17:24:31 2026 read: IOPS=10, BW=164KiB/s (167kB/s)(5920KiB/36203msec) clat (usec): min=34, max=178621, avg=46118.58, stdev=37889.55 lat (usec): min=34, max=178622, avg=46120.48, stdev=37889.12 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 61], 20.00th=[ 84], | 30.00th=[ 24249], 40.00th=[ 34866], 50.00th=[ 43779], 60.00th=[ 54264], | 70.00th=[ 63177], 80.00th=[ 78119], 90.00th=[ 93848], 95.00th=[116917], | 99.00th=[156238], 99.50th=[162530], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 31, max= 375, per=26.67%, avg=167.25, stdev=77.87, samples=69 iops : min= 1, max= 23, avg= 9.72, stdev= 4.93, samples=69 write: IOPS=10, BW=176KiB/s (180kB/s)(6368KiB/36203msec); 0 zone resets clat (usec): min=1611, max=417289, avg=47983.21, stdev=52682.13 lat (usec): min=1613, max=417292, avg=47986.08, stdev=52681.82 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2057], 10.00th=[ 3261], 20.00th=[ 6783], | 30.00th=[ 11338], 40.00th=[ 19006], 50.00th=[ 27919], 60.00th=[ 45351], | 70.00th=[ 62129], 80.00th=[ 83362], 90.00th=[110625], 95.00th=[149947], | 99.00th=[227541], 99.50th=[246416], 99.90th=[417334], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 31, max= 349, per=26.53%, avg=175.13, stdev=76.33, samples=71 iops : min= 1, max= 21, avg=10.20, stdev= 4.83, samples=71 lat (usec) : 50=1.69%, 100=8.98%, 250=0.65%, 500=0.26% lat (msec) : 2=2.86%, 4=3.78%, 10=8.98%, 20=7.68%, 50=24.74% lat (msec) : 100=29.95%, 250=10.29%, 500=0.13% cpu : usr=0.05%, sys=4.69%, ctx=1422, 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=145505: Thu Jun 11 17:24:31 2026 read: IOPS=9, BW=150KiB/s (154kB/s)(5744KiB/38167msec) clat (usec): min=39, max=360974, avg=54585.46, stdev=47627.83 lat (usec): min=39, max=360976, avg=54590.68, stdev=47625.20 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 57], 10.00th=[ 66], 20.00th=[ 111], | 30.00th=[ 31065], 40.00th=[ 39584], 50.00th=[ 49021], 60.00th=[ 60556], | 70.00th=[ 72877], 80.00th=[ 87557], 90.00th=[109577], 95.00th=[126354], | 99.00th=[200279], 99.50th=[304088], 99.90th=[362808], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 30, max= 351, per=24.32%, avg=152.47, stdev=66.58, samples=73 iops : min= 1, max= 21, avg= 8.77, stdev= 4.20, samples=73 write: IOPS=10, BW=171KiB/s (176kB/s)(6544KiB/38167msec); 0 zone resets clat (usec): min=1531, max=263127, avg=45296.90, stdev=51057.22 lat (usec): min=1533, max=263129, avg=45300.32, stdev=51056.86 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1975], 10.00th=[ 2868], 20.00th=[ 6456], | 30.00th=[ 10028], 40.00th=[ 17171], 50.00th=[ 25822], 60.00th=[ 38011], | 70.00th=[ 53740], 80.00th=[ 81265], 90.00th=[119014], 95.00th=[149947], | 99.00th=[235930], 99.50th=[246416], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 31, max= 318, per=25.93%, avg=171.11, stdev=74.78, samples=74 iops : min= 1, max= 19, avg= 9.96, stdev= 4.77, samples=74 lat (usec) : 50=1.30%, 100=7.68%, 250=1.04%, 500=0.13%, 1000=0.26% lat (msec) : 2=2.99%, 4=3.91%, 10=9.11%, 20=8.59%, 50=25.13% lat (msec) : 100=26.04%, 250=13.28%, 500=0.52% cpu : usr=0.07%, sys=4.61%, ctx=1474, 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=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=145506: Thu Jun 11 17:24:31 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(6256KiB/37295msec) clat (usec): min=35, max=191224, avg=49156.67, stdev=39631.78 lat (usec): min=36, max=191225, avg=49158.23, stdev=39631.78 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 56], 10.00th=[ 65], 20.00th=[ 108], | 30.00th=[ 27657], 40.00th=[ 36963], 50.00th=[ 46400], 60.00th=[ 54789], | 70.00th=[ 66323], 80.00th=[ 81265], 90.00th=[101188], 95.00th=[121111], | 99.00th=[179307], 99.50th=[187696], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 30, max= 345, per=27.17%, avg=170.35, stdev=72.04, samples=72 iops : min= 1, max= 21, avg= 9.92, stdev= 4.61, samples=72 write: IOPS=10, BW=162KiB/s (166kB/s)(6032KiB/37295msec); 0 zone resets clat (usec): min=1500, max=258354, avg=47691.15, stdev=51159.24 lat (usec): min=1503, max=258357, avg=47696.33, stdev=51158.55 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2073], 10.00th=[ 3261], 20.00th=[ 6521], | 30.00th=[ 11338], 40.00th=[ 18482], 50.00th=[ 31851], 60.00th=[ 42730], | 70.00th=[ 59507], 80.00th=[ 80217], 90.00th=[114820], 95.00th=[162530], | 99.00th=[240124], 99.50th=[256902], 99.90th=[258999], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 31, max= 314, per=24.46%, avg=161.42, stdev=70.53, samples=73 iops : min= 1, max= 19, avg= 9.36, stdev= 4.50, samples=73 lat (usec) : 50=1.82%, 100=8.20%, 250=0.91%, 500=0.26%, 750=0.13% lat (msec) : 2=2.08%, 4=4.43%, 10=7.42%, 20=7.81%, 50=25.65% lat (msec) : 100=29.82%, 250=11.20%, 500=0.26% cpu : usr=0.08%, sys=4.34%, ctx=1505, 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=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=145507: Thu Jun 11 17:24:31 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(6032KiB/35676msec) clat (usec): min=33, max=332981, avg=49923.31, stdev=46589.83 lat (usec): min=33, max=332981, avg=49924.97, stdev=46590.00 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 78], | 30.00th=[ 25297], 40.00th=[ 38536], 50.00th=[ 46924], 60.00th=[ 54789], | 70.00th=[ 62653], 80.00th=[ 80217], 90.00th=[106431], 95.00th=[128451], | 99.00th=[221250], 99.50th=[291505], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 31, max= 345, per=27.28%, avg=171.01, stdev=74.66, samples=69 iops : min= 1, max= 21, avg= 9.94, stdev= 4.72, samples=69 write: IOPS=10, BW=175KiB/s (180kB/s)(6256KiB/35676msec); 0 zone resets clat (usec): min=1159, max=246035, avg=42809.71, stdev=48296.45 lat (usec): min=1163, max=246037, avg=42827.32, stdev=48296.80 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1942], 10.00th=[ 3163], 20.00th=[ 5407], | 30.00th=[ 8717], 40.00th=[ 14091], 50.00th=[ 22938], 60.00th=[ 37487], | 70.00th=[ 53216], 80.00th=[ 73925], 90.00th=[113771], 95.00th=[141558], | 99.00th=[210764], 99.50th=[240124], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 31, max= 343, per=26.93%, avg=177.72, stdev=77.48, samples=69 iops : min= 1, max= 21, avg=10.38, stdev= 4.88, samples=69 lat (usec) : 50=2.08%, 100=9.24%, 250=0.78%, 500=0.39%, 750=0.26% lat (msec) : 2=2.86%, 4=4.95%, 10=8.72%, 20=9.24%, 50=22.79% lat (msec) : 100=26.82%, 250=11.46%, 500=0.39% cpu : usr=0.05%, sys=4.53%, ctx=1321, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=628KiB/s (643kB/s), 150KiB/s-169KiB/s (154kB/s-173kB/s), io=23.4MiB (24.5MB), run=35676-38167msec WRITE: bw=660KiB/s (676kB/s), 162KiB/s-176KiB/s (166kB/s-180kB/s), io=24.6MiB (25.8MB), run=35676-38167msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145500: Thu Jun 11 17:25:16 2026 read: IOPS=4, BW=70.4KiB/s (72.1kB/s)(5920KiB/84080msec) clat (msec): min=8, max=366, avg=49.88, stdev=50.87 lat (msec): min=8, max=366, avg=49.88, stdev=50.87 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 70], 90.00th=[ 113], 95.00th=[ 159], | 99.00th=[ 271], 99.50th=[ 326], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 30, max= 250, per=29.69%, avg=84.33, stdev=51.04, samples=138 iops : min= 1, max= 15, avg= 4.51, stdev= 3.24, samples=138 write: IOPS=4, BW=75.7KiB/s (77.6kB/s)(6368KiB/84080msec); 0 zone resets clat (msec): min=47, max=549, avg=164.43, stdev=86.57 lat (msec): min=47, max=549, avg=164.43, stdev=86.57 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 70], 10.00th=[ 83], 20.00th=[ 102], | 30.00th=[ 115], 40.00th=[ 127], 50.00th=[ 144], 60.00th=[ 159], | 70.00th=[ 176], 80.00th=[ 213], 90.00th=[ 279], 95.00th=[ 368], | 99.00th=[ 485], 99.50th=[ 523], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 30, max= 160, per=26.14%, avg=78.15, stdev=36.90, samples=160 iops : min= 1, max= 10, avg= 4.11, stdev= 2.37, samples=160 lat (msec) : 10=0.26%, 20=11.72%, 50=22.27%, 100=17.58%, 250=40.76% lat (msec) : 500=7.03%, 750=0.39% cpu : usr=0.02%, sys=1.12%, ctx=1259, 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=145501: Thu Jun 11 17:25:16 2026 read: IOPS=4, BW=68.2KiB/s (69.9kB/s)(5744KiB/84204msec) clat (msec): min=4, max=372, avg=46.08, stdev=49.01 lat (msec): min=4, max=372, avg=46.08, stdev=49.01 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 56], 90.00th=[ 102], 95.00th=[ 150], | 99.00th=[ 264], 99.50th=[ 326], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 24, max= 348, per=30.43%, avg=86.41, stdev=63.24, samples=130 iops : min= 1, max= 21, avg= 4.64, stdev= 3.96, samples=130 write: IOPS=4, BW=77.7KiB/s (79.6kB/s)(6544KiB/84204msec); 0 zone resets clat (msec): min=43, max=495, avg=165.23, stdev=86.85 lat (msec): min=43, max=495, avg=165.23, stdev=86.85 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 72], 10.00th=[ 83], 20.00th=[ 96], | 30.00th=[ 112], 40.00th=[ 126], 50.00th=[ 142], 60.00th=[ 161], | 70.00th=[ 182], 80.00th=[ 222], 90.00th=[ 296], 95.00th=[ 351], | 99.00th=[ 464], 99.50th=[ 477], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 30, max= 160, per=26.62%, avg=79.60, stdev=36.63, samples=161 iops : min= 1, max= 10, avg= 4.19, stdev= 2.37, samples=161 lat (msec) : 10=0.91%, 20=12.37%, 50=22.27%, 100=17.84%, 250=38.02% lat (msec) : 500=8.59% cpu : usr=0.04%, sys=1.18%, ctx=1336, 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=145502: Thu Jun 11 17:25:16 2026 read: IOPS=4, BW=77.0KiB/s (78.9kB/s)(6256KiB/81201msec) clat (msec): min=8, max=387, avg=46.06, stdev=47.60 lat (msec): min=8, max=387, avg=46.07, stdev=47.60 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 34], | 70.00th=[ 45], 80.00th=[ 62], 90.00th=[ 102], 95.00th=[ 142], | 99.00th=[ 239], 99.50th=[ 359], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 30, max= 320, per=30.82%, avg=87.52, stdev=64.73, samples=141 iops : min= 1, max= 20, avg= 4.69, stdev= 4.15, samples=141 write: IOPS=4, BW=74.3KiB/s (76.1kB/s)(6032KiB/81201msec); 0 zone resets clat (msec): min=52, max=643, avg=167.08, stdev=87.60 lat (msec): min=52, max=643, avg=167.08, stdev=87.60 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 79], 10.00th=[ 85], 20.00th=[ 95], | 30.00th=[ 110], 40.00th=[ 126], 50.00th=[ 142], 60.00th=[ 165], | 70.00th=[ 194], 80.00th=[ 224], 90.00th=[ 284], 95.00th=[ 342], | 99.00th=[ 460], 99.50th=[ 489], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 30, max= 159, per=25.46%, avg=76.13, stdev=36.49, samples=155 iops : min= 1, max= 9, avg= 3.98, stdev= 2.36, samples=155 lat (msec) : 10=1.17%, 20=11.85%, 50=24.74%, 100=19.01%, 250=35.42% lat (msec) : 500=7.68%, 750=0.13% cpu : usr=0.04%, sys=1.11%, ctx=1250, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145503: Thu Jun 11 17:25:16 2026 read: IOPS=4, BW=72.7KiB/s (74.5kB/s)(6032KiB/82926msec) clat (msec): min=6, max=288, avg=47.19, stdev=46.59 lat (msec): min=6, max=288, avg=47.19, stdev=46.59 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 47], 80.00th=[ 68], 90.00th=[ 103], 95.00th=[ 159], | 99.00th=[ 234], 99.50th=[ 284], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 30, max= 288, per=30.90%, avg=87.75, stdev=57.50, samples=134 iops : min= 1, max= 18, avg= 4.71, stdev= 3.65, samples=134 write: IOPS=4, BW=75.4KiB/s (77.3kB/s)(6256KiB/82926msec); 0 zone resets clat (msec): min=44, max=577, avg=166.11, stdev=89.99 lat (msec): min=44, max=577, avg=166.11, stdev=89.99 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 78], 10.00th=[ 86], 20.00th=[ 103], | 30.00th=[ 116], 40.00th=[ 128], 50.00th=[ 140], 60.00th=[ 157], | 70.00th=[ 178], 80.00th=[ 205], 90.00th=[ 292], 95.00th=[ 368], | 99.00th=[ 502], 99.50th=[ 518], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 30, max= 159, per=25.60%, avg=76.54, stdev=37.20, samples=160 iops : min= 1, max= 9, avg= 4.01, stdev= 2.42, samples=160 lat (msec) : 10=1.56%, 20=12.11%, 50=21.48%, 100=18.62%, 250=38.80% lat (msec) : 500=6.90%, 750=0.52% cpu : usr=0.03%, sys=1.25%, ctx=1276, 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=284KiB/s (291kB/s), 68.2KiB/s-77.0KiB/s (69.9kB/s-78.9kB/s), io=23.4MiB (24.5MB), run=81201-84204msec WRITE: bw=299KiB/s (306kB/s), 74.3KiB/s-77.7KiB/s (76.1kB/s-79.6kB/s), io=24.6MiB (25.8MB), run=81201-84204msec 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=145526: Thu Jun 11 17:25:33 2026 read: IOPS=2, BW=2126KiB/s (2177kB/s)(7168KiB/3372msec) clat (msec): min=143, max=320, avg=203.13, stdev=74.05 lat (msec): min=143, max=320, avg=203.14, stdev=74.05 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 159], 60.00th=[ 211], | 70.00th=[ 211], 80.00th=[ 292], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 2023, max= 4792, per=97.53%, avg=3615.33, stdev=1430.53, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1518KiB/s (1555kB/s)(5120KiB/3372msec); 0 zone resets clat (msec): min=299, max=479, avg=381.12, stdev=65.44 lat (msec): min=300, max=479, avg=381.37, stdev=65.47 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 363], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 1939, max= 3968, per=50.61%, avg=2626.67, stdev=1161.75, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=41.67%, 500=58.33% cpu : usr=0.06%, sys=3.95%, ctx=51, 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=145527: Thu Jun 11 17:25:33 2026 read: IOPS=0, BW=371KiB/s (380kB/s)(2048KiB/5524msec) clat (msec): min=112, max=275, avg=194.12, stdev=115.29 lat (msec): min=112, max=275, avg=194.12, stdev=115.29 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 113], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 275], 95.00th=[ 275], | 99.00th=[ 275], 99.50th=[ 275], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 1698, max= 1965, per=49.41%, avg=1831.50, stdev=188.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1854KiB/s (1898kB/s)(10.0MiB/5524msec); 0 zone resets clat (msec): min=236, max=1087, avg=497.03, stdev=266.56 lat (msec): min=236, max=1087, avg=497.17, stdev=266.54 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 241], | 30.00th=[ 359], 40.00th=[ 388], 50.00th=[ 397], 60.00th=[ 414], | 70.00th=[ 447], 80.00th=[ 600], 90.00th=[ 802], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1984, max= 4015, per=57.41%, avg=2979.33, stdev=1065.75, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.00%, ctx=104, 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=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=145528: Thu Jun 11 17:25:33 2026 read: IOPS=1, BW=1179KiB/s (1208kB/s)(6144KiB/5209msec) clat (msec): min=118, max=578, avg=271.92, stdev=166.31 lat (msec): min=118, max=578, avg=271.92, stdev=166.31 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 194], 50.00th=[ 194], 60.00th=[ 259], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1973, max= 4055, per=67.57%, avg=2504.75, stdev=1033.60, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1179KiB/s (1208kB/s)(6144KiB/5209msec); 0 zone resets clat (msec): min=262, max=1312, avg=562.67, stdev=420.04 lat (msec): min=262, max=1312, avg=562.86, stdev=420.00 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 414], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 1635, max= 2027, per=37.08%, avg=1924.60, stdev=165.47, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.04%, sys=2.69%, ctx=65, 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=145529: Thu Jun 11 17:25:33 2026 read: IOPS=1, BW=1295KiB/s (1326kB/s)(5120KiB/3954msec) clat (msec): min=147, max=407, avg=271.14, stdev=109.11 lat (msec): min=147, max=407, avg=271.14, stdev=109.11 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 259], 60.00th=[ 259], | 70.00th=[ 355], 80.00th=[ 355], 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= 1984, max= 3946, per=71.51%, avg=2651.00, stdev=1121.67, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1813KiB/s (1856kB/s)(7168KiB/3954msec); 0 zone resets clat (msec): min=155, max=706, avg=359.40, stdev=186.06 lat (msec): min=155, max=707, avg=359.68, stdev=186.23 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 243], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 284], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 493], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1765, max= 4031, per=45.18%, avg=2344.60, stdev=947.62, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=33.33%, 500=58.33%, 750=8.33% cpu : usr=0.08%, sys=2.58%, ctx=64, 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=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=3707KiB/s (3796kB/s), 371KiB/s-2126KiB/s (380kB/s-2177kB/s), io=20.0MiB (20.0MB), run=3372-5524msec WRITE: bw=5190KiB/s (5315kB/s), 1179KiB/s-1854KiB/s (1208kB/s-1898kB/s), io=28.0MiB (29.4MB), run=3372-5524msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145531: Thu Jun 11 17:25:33 2026 read: IOPS=2, BW=2103KiB/s (2153kB/s)(7168KiB/3409msec) clat (usec): min=682, max=406883, avg=249988.09, stdev=133202.63 lat (usec): min=683, max=406887, avg=249990.29, stdev=133203.02 clat percentiles (usec): | 1.00th=[ 685], 5.00th=[ 685], 10.00th=[ 685], 20.00th=[193987], | 30.00th=[198181], 40.00th=[198181], 50.00th=[308282], 60.00th=[312476], | 70.00th=[312476], 80.00th=[329253], 90.00th=[408945], 95.00th=[408945], | 99.00th=[408945], 99.50th=[408945], 99.90th=[408945], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 1602, max= 3930, per=63.58%, avg=2405.75, stdev=1037.45, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1502KiB/s (1538kB/s)(5120KiB/3409msec); 0 zone resets clat (msec): min=167, max=534, avg=284.96, stdev=144.58 lat (msec): min=167, max=535, avg=285.08, stdev=144.59 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 236], 60.00th=[ 236], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 535], 95.00th=[ 535], | 99.00th=[ 535], 99.50th=[ 535], 99.90th=[ 535], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 2043, max= 4055, per=51.25%, avg=2715.33, stdev=1160.19, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=8.83%, ctx=197, 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=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=145532: Thu Jun 11 17:25:33 2026 read: IOPS=0, BW=378KiB/s (388kB/s)(2048KiB/5411msec) clat (usec): min=1569, max=317556, avg=159562.96, stdev=223435.92 lat (usec): min=1571, max=317559, avg=159565.31, stdev=223437.60 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1565], 10.00th=[ 1565], 20.00th=[ 1565], | 30.00th=[ 1565], 40.00th=[ 1565], 50.00th=[ 1565], 60.00th=[316670], | 70.00th=[316670], 80.00th=[316670], 90.00th=[316670], 95.00th=[316670], | 99.00th=[316670], 99.50th=[316670], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 1689, max= 2027, per=49.10%, avg=1858.00, stdev=239.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1892KiB/s (1938kB/s)(10.0MiB/5411msec); 0 zone resets clat (msec): min=202, max=1266, avg=499.99, stdev=346.12 lat (msec): min=202, max=1267, avg=500.29, stdev=346.15 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 262], | 30.00th=[ 279], 40.00th=[ 317], 50.00th=[ 359], 60.00th=[ 368], | 70.00th=[ 422], 80.00th=[ 558], 90.00th=[ 961], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 2019, max= 4087, per=57.18%, avg=3029.50, stdev=1096.65, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 2=8.33%, 250=8.33%, 500=58.33%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=8.48%, ctx=130, 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=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=145533: Thu Jun 11 17:25:33 2026 read: IOPS=1, BW=1165KiB/s (1193kB/s)(6144KiB/5274msec) clat (msec): min=2, max=471, avg=234.28, stdev=156.65 lat (msec): min=2, max=471, avg=234.29, stdev=156.65 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 226], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 2048, max= 4087, per=89.90%, avg=3402.00, stdev=1172.63, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 write: IOPS=1, BW=1165KiB/s (1193kB/s)(6144KiB/5274msec); 0 zone resets clat (msec): min=307, max=1234, avg=637.23, stdev=348.93 lat (msec): min=308, max=1234, avg=637.44, stdev=348.89 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 575], | 70.00th=[ 827], 80.00th=[ 827], 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= 1556, max= 2048, per=36.79%, avg=1949.17, stdev=195.21, samples=6 iops : min= 1, max= 2, avg= 1.33, stdev= 0.52, samples=6 lat (msec) : 4=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.02%, sys=8.23%, ctx=163, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145534: Thu Jun 11 17:25:33 2026 read: IOPS=1, BW=1312KiB/s (1344kB/s)(5120KiB/3902msec) clat (usec): min=722, max=360187, avg=234891.71, stdev=147378.31 lat (usec): min=725, max=360189, avg=234894.27, stdev=147377.84 clat percentiles (usec): | 1.00th=[ 725], 5.00th=[ 725], 10.00th=[ 725], 20.00th=[ 725], | 30.00th=[181404], 40.00th=[181404], 50.00th=[312476], 60.00th=[312476], | 70.00th=[320865], 80.00th=[320865], 90.00th=[358613], 95.00th=[358613], | 99.00th=[358613], 99.50th=[358613], 99.90th=[358613], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 4055, max= 4087, per=100.00%, avg=4071.00, stdev=22.63, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1837KiB/s (1881kB/s)(7168KiB/3902msec); 0 zone resets clat (msec): min=195, max=561, avg=361.85, stdev=136.16 lat (msec): min=195, max=561, avg=362.12, stdev=136.08 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 247], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 355], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 518], 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= 1656, max= 2048, per=36.99%, avg=1959.67, stdev=151.69, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=9.97%, ctx=85, 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=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=3785KiB/s (3876kB/s), 378KiB/s-2103KiB/s (388kB/s-2153kB/s), io=20.0MiB (20.0MB), run=3409-5411msec WRITE: bw=5299KiB/s (5426kB/s), 1165KiB/s-1892KiB/s (1193kB/s-1938kB/s), io=28.0MiB (29.4MB), run=3409-5411msec 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=145541: Thu Jun 11 17:25:49 2026 read: IOPS=1, BW=5150KiB/s (5274kB/s)(12.0MiB/2386msec) clat (msec): min=736, max=789, avg=755.25, stdev=29.69 lat (msec): min=736, max=789, avg=755.25, stdev=29.69 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 8094, max= 8175, per=100.00%, avg=8134.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.13%, sys=4.28%, ctx=57, 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=145542: Thu Jun 11 17:25:49 2026 read: IOPS=0, BW=1838KiB/s (1882kB/s)(4096KiB/2229msec) clat (nsec): min=326952k, max=326952k, avg=326951534.00, stdev= 0.00 lat (nsec): min=326953k, max=326953k, avg=326952636.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 326], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 326], 95.00th=[ 326], | 99.00th=[ 326], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3675KiB/s (3763kB/s)(8192KiB/2229msec); 0 zone resets clat (msec): min=767, max=892, avg=830.02, stdev=88.10 lat (msec): min=770, max=896, avg=833.13, stdev=89.16 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 894], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 8126, max= 8126, per=93.12%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.09%, sys=5.79%, ctx=56, 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=145543: Thu Jun 11 17:25:49 2026 write: IOPS=0, BW=3272KiB/s (3351kB/s)(12.0MiB/3755msec); 0 zone resets clat (msec): min=593, max=1555, avg=1140.65, stdev=494.50 lat (msec): min=594, max=1555, avg=1141.48, stdev=494.44 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8126, max= 8175, per=93.40%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.03%, sys=3.38%, ctx=94, 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=145544: Thu Jun 11 17:25:49 2026 write: IOPS=1, BW=6150KiB/s (6298kB/s)(12.0MiB/1998msec); 0 zone resets clat (msec): min=391, max=950, avg=633.72, stdev=286.67 lat (msec): min=391, max=953, avg=635.26, stdev=288.34 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 6122, max= 8175, per=81.92%, avg=7148.50, stdev=1451.69, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=4.51%, ctx=55, 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=6867KiB/s (7032kB/s), 1838KiB/s-5150KiB/s (1882kB/s-5274kB/s), io=16.0MiB (16.8MB), run=2229-2386msec WRITE: bw=8726KiB/s (8936kB/s), 3272KiB/s-6150KiB/s (3351kB/s-6298kB/s), io=32.0MiB (33.6MB), run=1998-3755msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145546: Thu Jun 11 17:25:50 2026 read: IOPS=0, BW=3600KiB/s (3687kB/s)(12.0MiB/3413msec) clat (msec): min=804, max=1332, avg=1131.82, stdev=286.06 lat (msec): min=804, max=1332, avg=1131.82, stdev=286.06 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8000, max= 8175, per=100.00%, avg=8087.50, stdev=123.74, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=9.96%, ctx=270, 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=145547: Thu Jun 11 17:25:50 2026 read: IOPS=0, BW=1100KiB/s (1126kB/s)(4096KiB/3725msec) clat (nsec): min=1390.4M, max=1390.4M, avg=1390353424.00, stdev= 0.00 lat (nsec): min=1390.4M, max=1390.4M, avg=1390355322.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1385], 5.00th=[ 1385], 10.00th=[ 1385], 20.00th=[ 1385], | 30.00th=[ 1385], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2199KiB/s (2252kB/s)(8192KiB/3725msec); 0 zone resets clat (msec): min=289, max=2041, avg=1165.71, stdev=1238.85 lat (msec): min=290, max=2043, avg=1166.88, stdev=1239.51 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 2039], | 70.00th=[ 2039], 80.00th=[ 2039], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 8078, max= 8078, per=91.84%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.21%, sys=2.47%, ctx=145, 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=145548: Thu Jun 11 17:25:50 2026 write: IOPS=0, BW=3300KiB/s (3379kB/s)(12.0MiB/3724msec); 0 zone resets clat (msec): min=614, max=1580, avg=1238.63, stdev=541.33 lat (msec): min=616, max=1581, avg=1240.80, stdev=541.48 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 1519], 50.00th=[ 1519], 60.00th=[ 1519], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 8078, max= 8175, per=92.39%, avg=8126.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.14%, ctx=72, 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=145549: Thu Jun 11 17:25:50 2026 write: IOPS=0, BW=3767KiB/s (3857kB/s)(12.0MiB/3262msec); 0 zone resets clat (msec): min=595, max=1962, avg=1085.71, stdev=760.85 lat (msec): min=596, max=1964, avg=1086.82, stdev=761.53 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 1955], 80.00th=[ 1955], 90.00th=[ 1955], 95.00th=[ 1955], | 99.00th=[ 1955], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 5557, max= 8175, per=78.06%, avg=6866.00, stdev=1851.21, 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=3.83%, ctx=60, 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=4398KiB/s (4504kB/s), 1100KiB/s-3600KiB/s (1126kB/s-3687kB/s), io=16.0MiB (16.8MB), run=3413-3725msec WRITE: bw=8797KiB/s (9008kB/s), 2199KiB/s-3767KiB/s (2252kB/s-3857kB/s), io=32.0MiB (33.6MB), run=3262-3725msec