== sanity test 398b: DIO and buffer IO race ============== 07:24:20 (1787397860) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.91584 s, 8.5 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=145964: Sat Aug 22 07:26:43 2026 read: IOPS=11, BW=47.0KiB/s (49.1kB/s)(5992KiB/124847msec) clat (usec): min=32, max=282357, avg=41936.25, stdev=28826.43 lat (usec): min=32, max=282358, avg=41941.74, stdev=28824.11 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 74], 10.00th=[ 13566], 20.00th=[ 20841], | 30.00th=[ 26084], 40.00th=[ 31327], 50.00th=[ 36439], 60.00th=[ 42730], | 70.00th=[ 50594], 80.00th=[ 60556], 90.00th=[ 77071], 95.00th=[ 92799], | 99.00th=[141558], 99.50th=[168821], 99.90th=[208667], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 119, per=25.14%, avg=48.28, stdev=18.54, samples=241 iops : min= 1, max= 29, avg=11.41, stdev= 4.66, samples=241 write: IOPS=12, BW=50.4KiB/s (51.6kB/s)(6296KiB/124847msec); 0 zone resets clat (usec): min=1129, max=1004.6k, avg=39020.68, stdev=44675.45 lat (usec): min=1130, max=1004.6k, avg=39026.66, stdev=44674.08 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1827], 10.00th=[ 2933], | 20.00th=[ 5669], 30.00th=[ 10028], 40.00th=[ 19268], | 50.00th=[ 29754], 60.00th=[ 40109], 70.00th=[ 50070], | 80.00th=[ 65799], 90.00th=[ 86508], 95.00th=[ 105382], | 99.00th=[ 152044], 99.50th=[ 183501], 99.90th=[ 358613], | 99.95th=[1002439], 99.99th=[1002439] bw ( KiB/s): min= 7, max= 183, per=25.00%, avg=50.25, stdev=22.33, samples=244 iops : min= 1, max= 45, avg=11.90, stdev= 5.60, samples=244 lat (usec) : 50=0.23%, 100=2.83%, 250=0.42%, 500=0.13% lat (msec) : 2=2.93%, 4=4.69%, 10=8.11%, 20=10.51%, 50=39.52% lat (msec) : 100=25.88%, 250=4.59%, 500=0.13%, 2000=0.03% cpu : usr=0.08%, sys=5.57%, ctx=7135, 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=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=145967: Sat Aug 22 07:26:43 2026 read: IOPS=12, BW=48.0KiB/s (49.2kB/s)(5940KiB/123661msec) clat (usec): min=32, max=1065.5k, avg=41926.48, stdev=40180.57 lat (usec): min=33, max=1065.5k, avg=41928.75, stdev=40180.16 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 69], 10.00th=[ 11469], | 20.00th=[ 21103], 30.00th=[ 25560], 40.00th=[ 29492], | 50.00th=[ 35390], 60.00th=[ 42206], 70.00th=[ 49546], | 80.00th=[ 59507], 90.00th=[ 74974], 95.00th=[ 93848], | 99.00th=[ 160433], 99.50th=[ 191890], 99.90th=[ 246416], | 99.95th=[1069548], 99.99th=[1069548] bw ( KiB/s): min= 7, max= 111, per=25.09%, avg=48.17, stdev=18.91, samples=241 iops : min= 1, max= 27, avg=11.37, stdev= 4.77, samples=241 write: IOPS=12, BW=51.3KiB/s (52.6kB/s)(6348KiB/123661msec); 0 zone resets clat (usec): min=1185, max=255184, avg=38312.95, stdev=36904.17 lat (usec): min=1187, max=255185, avg=38316.94, stdev=36904.89 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1713], 10.00th=[ 2933], 20.00th=[ 5473], | 30.00th=[ 9634], 40.00th=[ 19006], 50.00th=[ 29492], 60.00th=[ 40109], | 70.00th=[ 51119], 80.00th=[ 63177], 90.00th=[ 89654], 95.00th=[112722], | 99.00th=[152044], 99.50th=[173016], 99.90th=[238027], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 7, max= 119, per=25.45%, avg=51.15, stdev=21.60, samples=242 iops : min= 1, max= 29, avg=12.12, stdev= 5.41, samples=242 lat (usec) : 50=0.23%, 100=3.35%, 250=0.49%, 500=0.13%, 750=0.07% lat (msec) : 2=3.22%, 4=4.43%, 10=8.56%, 20=9.24%, 50=39.88% lat (msec) : 100=24.48%, 250=5.86%, 500=0.03%, 2000=0.03% cpu : usr=0.07%, sys=5.76%, ctx=7156, 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=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=145969: Sat Aug 22 07:26:43 2026 read: IOPS=12, BW=49.0KiB/s (50.2kB/s)(6028KiB/122951msec) clat (usec): min=34, max=319819, avg=38464.37, stdev=27234.57 lat (usec): min=34, max=319821, avg=38466.30, stdev=27234.34 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 68], 10.00th=[ 4621], 20.00th=[ 18744], | 30.00th=[ 23725], 40.00th=[ 28443], 50.00th=[ 33817], 60.00th=[ 39584], | 70.00th=[ 47449], 80.00th=[ 56886], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[124257], 99.50th=[139461], 99.90th=[189793], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 7, max= 119, per=25.39%, avg=48.75, stdev=20.55, samples=242 iops : min= 1, max= 29, avg=11.52, stdev= 5.17, samples=242 write: IOPS=12, BW=50.9KiB/s (52.1kB/s)(6260KiB/122951msec); 0 zone resets clat (usec): min=1136, max=875554, avg=41190.98, stdev=44106.04 lat (usec): min=1137, max=875556, avg=41196.10, stdev=44107.69 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1647], 10.00th=[ 2638], 20.00th=[ 6128], | 30.00th=[ 11076], 40.00th=[ 22676], 50.00th=[ 32375], 60.00th=[ 41681], | 70.00th=[ 53216], 80.00th=[ 69731], 90.00th=[ 92799], 95.00th=[115868], | 99.00th=[166724], 99.50th=[217056], 99.90th=[304088], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 15, max= 111, per=25.18%, avg=50.61, stdev=18.68, samples=242 iops : min= 3, max= 27, avg=12.00, stdev= 4.69, samples=242 lat (usec) : 50=0.49%, 100=3.48%, 250=0.59%, 500=0.16%, 1000=0.03% lat (msec) : 2=3.58%, 4=3.48%, 10=7.81%, 20=10.58%, 50=39.88% lat (msec) : 100=24.54%, 250=5.27%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=5.64%, ctx=7021, 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=145970: Sat Aug 22 07:26:43 2026 read: IOPS=12, BW=48.5KiB/s (49.7kB/s)(6052KiB/124712msec) clat (usec): min=35, max=306132, avg=40079.15, stdev=28136.97 lat (usec): min=35, max=306133, avg=40081.20, stdev=28136.66 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 69], 10.00th=[ 11863], 20.00th=[ 20055], | 30.00th=[ 25035], 40.00th=[ 30278], 50.00th=[ 35390], 60.00th=[ 41157], | 70.00th=[ 48497], 80.00th=[ 58983], 90.00th=[ 73925], 95.00th=[ 86508], | 99.00th=[135267], 99.50th=[156238], 99.90th=[240124], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 7, max= 159, per=25.43%, avg=48.83, stdev=19.47, samples=242 iops : min= 1, max= 39, avg=11.54, stdev= 4.89, samples=242 write: IOPS=12, BW=50.0KiB/s (51.2kB/s)(6236KiB/124712msec); 0 zone resets clat (usec): min=1229, max=1191.6k, avg=40755.07, stdev=48524.36 lat (usec): min=1231, max=1191.6k, avg=40757.46, stdev=48524.14 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1713], 10.00th=[ 2999], | 20.00th=[ 5800], 30.00th=[ 11469], 40.00th=[ 21103], | 50.00th=[ 31065], 60.00th=[ 40633], 70.00th=[ 52167], | 80.00th=[ 68682], 90.00th=[ 88605], 95.00th=[ 112722], | 99.00th=[ 177210], 99.50th=[ 231736], 99.90th=[ 267387], | 99.95th=[1199571], 99.99th=[1199571] bw ( KiB/s): min= 7, max= 142, per=24.76%, avg=49.77, stdev=20.32, samples=244 iops : min= 1, max= 35, avg=11.77, stdev= 5.09, samples=244 lat (usec) : 50=0.16%, 100=3.58%, 250=0.46%, 500=0.03%, 750=0.10% lat (usec) : 1000=0.03% lat (msec) : 2=3.03%, 4=4.26%, 10=7.26%, 20=10.55%, 50=40.53% lat (msec) : 100=24.71%, 250=5.18%, 500=0.10%, 2000=0.03% cpu : usr=0.10%, sys=5.74%, ctx=7127, 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=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=192KiB/s (197kB/s), 47.0KiB/s-49.0KiB/s (49.1kB/s-50.2kB/s), io=23.4MiB (24.6MB), run=122951-124847msec WRITE: bw=201KiB/s (206kB/s), 50.0KiB/s-51.3KiB/s (51.2kB/s-52.6kB/s), io=24.6MiB (25.7MB), run=122951-124847msec fio: pid=145965, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=145965: Sat Aug 22 07:28:41 2026 read: IOPS=5, BW=22.0KiB/s (22.6kB/s)(3916KiB/177746msec) clat (msec): min=6, max=909, avg=44.96, stdev=47.80 lat (msec): min=6, max=909, avg=44.96, stdev=47.80 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 49], 80.00th=[ 66], 90.00th=[ 86], 95.00th=[ 115], | 99.00th=[ 247], 99.50th=[ 284], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 95, per=26.76%, avg=24.08, stdev=16.48, samples=313 iops : min= 1, max= 23, avg= 5.37, stdev= 4.16, samples=313 write: IOPS=5, BW=23.3KiB/s (23.8kB/s)(4136KiB/177746msec); 0 zone resets clat (msec): min=33, max=426, avg=128.84, stdev=63.45 lat (msec): min=33, max=426, avg=128.84, stdev=63.45 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 65], 20.00th=[ 75], | 30.00th=[ 87], 40.00th=[ 100], 50.00th=[ 114], 60.00th=[ 132], | 70.00th=[ 150], 80.00th=[ 176], 90.00th=[ 215], 95.00th=[ 249], | 99.00th=[ 338], 99.50th=[ 351], 99.90th=[ 418], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7, max= 63, per=24.50%, avg=23.03, stdev=11.59, samples=345 iops : min= 1, max= 15, avg= 5.11, stdev= 2.94, samples=345 lat (msec) : 10=1.59%, 20=10.82%, 50=23.58%, 100=30.09%, 250=30.93% lat (msec) : 500=2.88%, 1000=0.05% cpu : usr=0.03%, sys=1.53%, ctx=3470, majf=0, minf=22 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=980,1034,0,0 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=145966: Sat Aug 22 07:28:41 2026 read: IOPS=6, BW=24.5KiB/s (25.0kB/s)(5940KiB/242936msec) clat (msec): min=6, max=1067, avg=38.86, stdev=40.81 lat (msec): min=6, max=1067, avg=38.87, stdev=40.81 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 35], | 70.00th=[ 41], 80.00th=[ 51], 90.00th=[ 73], 95.00th=[ 102], | 99.00th=[ 167], 99.50th=[ 201], 99.90th=[ 334], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 88, per=29.59%, avg=26.63, stdev=17.37, samples=432 iops : min= 1, max= 22, avg= 6.02, stdev= 4.39, samples=432 write: IOPS=6, BW=26.1KiB/s (26.8kB/s)(6348KiB/242936msec); 0 zone resets clat (msec): min=37, max=456, avg=116.35, stdev=55.89 lat (msec): min=37, max=456, avg=116.36, stdev=55.89 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 71], | 30.00th=[ 81], 40.00th=[ 90], 50.00th=[ 102], 60.00th=[ 114], | 70.00th=[ 132], 80.00th=[ 159], 90.00th=[ 197], 95.00th=[ 226], | 99.00th=[ 296], 99.50th=[ 309], 99.90th=[ 426], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 7, max= 55, per=27.43%, avg=25.79, stdev=11.63, samples=476 iops : min= 1, max= 13, avg= 5.81, stdev= 2.97, samples=476 lat (msec) : 10=1.66%, 20=10.38%, 50=27.77%, 100=31.41%, 250=27.05% lat (msec) : 500=1.69%, 2000=0.03% cpu : usr=0.05%, sys=1.71%, ctx=5984, 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=145968: Sat Aug 22 07:28:41 2026 read: IOPS=6, BW=24.8KiB/s (25.4kB/s)(6028KiB/242908msec) clat (msec): min=6, max=310, avg=38.57, stdev=30.51 lat (msec): min=6, max=310, avg=38.57, stdev=30.52 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 41], 80.00th=[ 52], 90.00th=[ 77], 95.00th=[ 100], | 99.00th=[ 146], 99.50th=[ 186], 99.90th=[ 259], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 7, max= 95, per=29.08%, avg=26.17, stdev=16.75, samples=446 iops : min= 1, max= 23, avg= 5.91, stdev= 4.23, samples=446 write: IOPS=6, BW=25.8KiB/s (26.4kB/s)(6260KiB/242908msec); 0 zone resets clat (msec): min=33, max=1295, avg=117.76, stdev=62.94 lat (msec): min=33, max=1295, avg=117.77, stdev=62.94 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 72], | 30.00th=[ 82], 40.00th=[ 90], 50.00th=[ 102], 60.00th=[ 114], | 70.00th=[ 134], 80.00th=[ 157], 90.00th=[ 201], 95.00th=[ 226], | 99.00th=[ 296], 99.50th=[ 338], 99.90th=[ 384], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 55, per=27.14%, avg=25.51, stdev=11.73, samples=474 iops : min= 1, max= 13, avg= 5.74, stdev= 2.97, samples=474 lat (msec) : 10=1.53%, 20=10.94%, 50=27.57%, 100=31.38%, 250=26.89% lat (msec) : 500=1.66%, 2000=0.03% cpu : usr=0.05%, sys=1.73%, ctx=5904, 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=145971: Sat Aug 22 07:28:41 2026 read: IOPS=6, BW=25.1KiB/s (25.7kB/s)(6052KiB/241254msec) clat (msec): min=5, max=335, avg=38.27, stdev=33.42 lat (msec): min=5, max=335, avg=38.27, stdev=33.42 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 40], 80.00th=[ 50], 90.00th=[ 77], 95.00th=[ 105], | 99.00th=[ 163], 99.50th=[ 197], 99.90th=[ 330], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 95, per=30.18%, avg=27.16, stdev=17.27, samples=431 iops : min= 1, max= 23, avg= 6.15, stdev= 4.36, samples=431 write: IOPS=6, BW=25.8KiB/s (26.5kB/s)(6236KiB/241254msec); 0 zone resets clat (msec): min=37, max=1188, avg=117.32, stdev=64.46 lat (msec): min=37, max=1188, avg=117.33, stdev=64.46 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 71], | 30.00th=[ 81], 40.00th=[ 90], 50.00th=[ 102], 60.00th=[ 114], | 70.00th=[ 133], 80.00th=[ 155], 90.00th=[ 194], 95.00th=[ 239], | 99.00th=[ 317], 99.50th=[ 368], 99.90th=[ 460], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 56, per=27.28%, avg=25.64, stdev=11.90, samples=469 iops : min= 1, max= 14, avg= 5.77, stdev= 3.03, samples=469 lat (msec) : 10=1.73%, 20=11.75%, 50=27.57%, 100=30.27%, 250=26.73% lat (msec) : 500=1.92%, 2000=0.03% cpu : usr=0.05%, sys=1.67%, ctx=5910, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=90.3KiB/s (92.5kB/s), 22.0KiB/s-25.1KiB/s (22.6kB/s-25.7kB/s), io=21.4MiB (22.5MB), run=177746-242936msec WRITE: bw=94.6KiB/s (96.9kB/s), 23.3KiB/s-26.1KiB/s (23.8kB/s-26.8kB/s), io=22.4MiB (23.5MB), run=177746-242936msec 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=146025: Sat Aug 22 07:29:19 2026 read: IOPS=12, BW=203KiB/s (208kB/s)(5920KiB/29109msec) clat (usec): min=41, max=361423, avg=41306.62, stdev=32687.94 lat (usec): min=41, max=361423, avg=41308.22, stdev=32687.90 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 69], 10.00th=[ 91], 20.00th=[ 20317], | 30.00th=[ 26870], 40.00th=[ 32637], 50.00th=[ 36963], 60.00th=[ 43779], | 70.00th=[ 51643], 80.00th=[ 62653], 90.00th=[ 77071], 95.00th=[ 90702], | 99.00th=[131597], 99.50th=[189793], 99.90th=[362808], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 92, max= 382, per=25.91%, avg=203.65, stdev=71.88, samples=57 iops : min= 5, max= 23, avg=11.93, stdev= 4.53, samples=57 write: IOPS=13, BW=219KiB/s (224kB/s)(6368KiB/29109msec); 0 zone resets clat (usec): min=1590, max=166862, avg=34258.88, stdev=33016.36 lat (usec): min=1594, max=166865, avg=34281.32, stdev=33035.23 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2868], 10.00th=[ 4047], 20.00th=[ 7046], | 30.00th=[ 9241], 40.00th=[ 13173], 50.00th=[ 21627], 60.00th=[ 31589], | 70.00th=[ 44303], 80.00th=[ 60556], 90.00th=[ 87557], 95.00th=[ 99091], | 99.00th=[130548], 99.50th=[139461], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 63, max= 413, per=26.48%, avg=219.02, stdev=74.11, samples=57 iops : min= 3, max= 25, avg=12.91, stdev= 4.66, samples=57 lat (usec) : 50=0.26%, 100=5.08%, 250=1.17%, 500=0.39%, 1000=0.13% lat (msec) : 2=1.04%, 4=4.30%, 10=12.11%, 20=9.90%, 50=36.46% lat (msec) : 100=25.39%, 250=3.65%, 500=0.13% cpu : usr=0.07%, sys=6.34%, ctx=1726, 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=146026: Sat Aug 22 07:29:19 2026 read: IOPS=12, BW=194KiB/s (199kB/s)(5744KiB/29626msec) clat (usec): min=40, max=233339, avg=44659.88, stdev=35132.30 lat (usec): min=40, max=233341, avg=44661.55, stdev=35132.32 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 65], 10.00th=[ 80], 20.00th=[ 17957], | 30.00th=[ 29492], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 47449], | 70.00th=[ 55313], 80.00th=[ 65274], 90.00th=[ 83362], 95.00th=[105382], | 99.00th=[173016], 99.50th=[221250], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 350, per=24.41%, avg=191.83, stdev=70.39, samples=58 iops : min= 1, max= 21, avg=11.19, stdev= 4.43, samples=58 write: IOPS=13, BW=221KiB/s (226kB/s)(6544KiB/29626msec); 0 zone resets clat (usec): min=1808, max=291117, avg=32685.31, stdev=34400.10 lat (usec): min=1810, max=291120, avg=32690.12, stdev=34403.98 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 21], 60.00th=[ 31], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 78], 95.00th=[ 103], | 99.00th=[ 153], 99.50th=[ 163], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 381, per=26.38%, avg=218.14, stdev=84.00, samples=58 iops : min= 1, max= 23, avg=12.84, stdev= 5.29, samples=58 lat (usec) : 50=0.13%, 100=5.47%, 250=1.56%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.26% lat (msec) : 2=0.52%, 4=3.26%, 10=14.71%, 20=9.77%, 50=34.51% lat (msec) : 100=23.96%, 250=5.47%, 500=0.13% cpu : usr=0.10%, sys=6.61%, ctx=1687, 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=146027: Sat Aug 22 07:29:19 2026 read: IOPS=12, BW=206KiB/s (210kB/s)(6256KiB/30440msec) clat (usec): min=39, max=255183, avg=44426.79, stdev=35582.13 lat (usec): min=39, max=255185, avg=44430.35, stdev=35582.83 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 71], 10.00th=[ 96], 20.00th=[ 18220], | 30.00th=[ 27919], 40.00th=[ 33424], 50.00th=[ 39584], 60.00th=[ 45351], | 70.00th=[ 56361], 80.00th=[ 65799], 90.00th=[ 84411], 95.00th=[112722], | 99.00th=[181404], 99.50th=[200279], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 64, max= 477, per=26.21%, avg=206.03, stdev=73.56, samples=60 iops : min= 4, max= 29, avg=12.08, stdev= 4.61, samples=60 write: IOPS=12, BW=198KiB/s (203kB/s)(6032KiB/30440msec); 0 zone resets clat (usec): min=1750, max=232670, avg=34139.38, stdev=32792.24 lat (usec): min=1750, max=232674, avg=34154.12, stdev=32792.99 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2442], 10.00th=[ 3687], 20.00th=[ 6456], | 30.00th=[ 10290], 40.00th=[ 16909], 50.00th=[ 25035], 60.00th=[ 34866], | 70.00th=[ 42730], 80.00th=[ 55837], 90.00th=[ 80217], 95.00th=[ 94897], | 99.00th=[147850], 99.50th=[164627], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 31, max= 476, per=23.74%, avg=196.33, stdev=90.20, samples=60 iops : min= 1, max= 29, avg=11.48, stdev= 5.72, samples=60 lat (usec) : 50=0.39%, 100=5.08%, 250=2.34%, 500=0.13%, 750=0.26% lat (usec) : 1000=0.26% lat (msec) : 2=1.43%, 4=3.91%, 10=9.64%, 20=9.51%, 50=37.37% lat (msec) : 100=24.61%, 250=4.95%, 500=0.13% cpu : usr=0.07%, sys=6.38%, ctx=1772, 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=146028: Sat Aug 22 07:29:19 2026 read: IOPS=12, BW=207KiB/s (212kB/s)(6032KiB/29176msec) clat (usec): min=40, max=235042, avg=42312.18, stdev=32308.78 lat (usec): min=40, max=235044, avg=42313.86, stdev=32308.85 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 69], 10.00th=[ 80], 20.00th=[ 18220], | 30.00th=[ 26346], 40.00th=[ 32900], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 54789], 80.00th=[ 65274], 90.00th=[ 79168], 95.00th=[ 91751], | 99.00th=[149947], 99.50th=[212861], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 63, max= 349, per=26.11%, avg=205.23, stdev=62.38, samples=57 iops : min= 3, max= 21, avg=12.04, stdev= 3.90, samples=57 write: IOPS=13, BW=214KiB/s (220kB/s)(6256KiB/29176msec); 0 zone resets clat (usec): min=1574, max=320251, avg=33587.41, stdev=36347.76 lat (usec): min=1576, max=320254, avg=33591.71, stdev=36347.81 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 2311], 10.00th=[ 3556], 20.00th=[ 5800], | 30.00th=[ 8717], 40.00th=[ 13960], 50.00th=[ 23462], 60.00th=[ 32637], | 70.00th=[ 41681], 80.00th=[ 54264], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[147850], 99.50th=[278922], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 63, max= 413, per=25.89%, avg=214.14, stdev=87.69, samples=57 iops : min= 3, max= 25, avg=12.60, stdev= 5.54, samples=57 lat (usec) : 50=0.78%, 100=5.73%, 250=0.78%, 500=0.13%, 750=0.39% lat (usec) : 1000=0.13% lat (msec) : 2=1.04%, 4=5.08%, 10=10.94%, 20=10.03%, 50=35.68% lat (msec) : 100=25.39%, 250=3.65%, 500=0.26% cpu : usr=0.10%, sys=6.63%, ctx=1660, 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=787KiB/s (806kB/s), 194KiB/s-207KiB/s (199kB/s-212kB/s), io=23.4MiB (24.5MB), run=29109-30440msec WRITE: bw=828KiB/s (848kB/s), 198KiB/s-221KiB/s (203kB/s-226kB/s), io=24.6MiB (25.8MB), run=29109-30440msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146030: Sat Aug 22 07:29:50 2026 read: IOPS=6, BW=99.0KiB/s (101kB/s)(5920KiB/59792msec) clat (msec): min=7, max=334, avg=36.91, stdev=40.18 lat (msec): min=7, max=334, avg=36.92, stdev=40.18 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 52], 90.00th=[ 78], 95.00th=[ 129], | 99.00th=[ 199], 99.50th=[ 313], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 30, max= 320, per=26.19%, avg=104.50, stdev=64.70, samples=111 iops : min= 1, max= 20, avg= 5.81, stdev= 4.12, samples=111 write: IOPS=6, BW=107KiB/s (109kB/s)(6368KiB/59792msec); 0 zone resets clat (msec): min=37, max=365, avg=115.74, stdev=53.22 lat (msec): min=37, max=365, avg=115.74, stdev=53.22 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 74], | 30.00th=[ 84], 40.00th=[ 92], 50.00th=[ 104], 60.00th=[ 114], | 70.00th=[ 129], 80.00th=[ 157], 90.00th=[ 188], 95.00th=[ 213], | 99.00th=[ 300], 99.50th=[ 326], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 22, max= 218, per=25.50%, avg=107.11, stdev=50.37, samples=117 iops : min= 1, max= 13, avg= 5.97, stdev= 3.25, samples=117 lat (msec) : 10=1.56%, 20=19.40%, 50=18.23%, 100=29.56%, 250=29.56% lat (msec) : 500=1.69% cpu : usr=0.04%, sys=1.74%, ctx=1327, 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=146031: Sat Aug 22 07:29:50 2026 read: IOPS=5, BW=95.9KiB/s (98.2kB/s)(5744KiB/59893msec) clat (msec): min=7, max=236, avg=33.08, stdev=32.38 lat (msec): min=7, max=236, avg=33.09, stdev=32.38 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 42], 90.00th=[ 68], 95.00th=[ 101], | 99.00th=[ 184], 99.50th=[ 207], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 22, max= 416, per=27.33%, avg=109.04, stdev=73.91, samples=103 iops : min= 1, max= 26, avg= 6.07, stdev= 4.76, samples=103 write: IOPS=6, BW=109KiB/s (112kB/s)(6544KiB/59893msec); 0 zone resets clat (msec): min=39, max=426, avg=117.26, stdev=57.84 lat (msec): min=39, max=426, avg=117.27, stdev=57.84 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 56], 10.00th=[ 63], 20.00th=[ 75], | 30.00th=[ 84], 40.00th=[ 95], 50.00th=[ 103], 60.00th=[ 115], | 70.00th=[ 129], 80.00th=[ 150], 90.00th=[ 194], 95.00th=[ 230], | 99.00th=[ 309], 99.50th=[ 359], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 31, max= 251, per=26.13%, avg=109.73, stdev=48.22, samples=117 iops : min= 1, max= 15, avg= 6.13, stdev= 3.10, samples=117 lat (msec) : 10=1.95%, 20=18.62%, 50=19.92%, 100=28.91%, 250=28.39% lat (msec) : 500=2.21% cpu : usr=0.05%, sys=1.73%, ctx=1376, 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=146032: Sat Aug 22 07:29:50 2026 read: IOPS=6, BW=106KiB/s (108kB/s)(6256KiB/59178msec) clat (msec): min=7, max=331, avg=36.36, stdev=40.44 lat (msec): min=7, max=331, avg=36.36, stdev=40.44 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 43], 90.00th=[ 86], 95.00th=[ 128], | 99.00th=[ 199], 99.50th=[ 222], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 352, per=27.91%, avg=111.38, stdev=77.43, samples=111 iops : min= 1, max= 22, avg= 6.24, stdev= 4.92, samples=111 write: IOPS=6, BW=102KiB/s (104kB/s)(6032KiB/59178msec); 0 zone resets clat (msec): min=38, max=383, avg=119.08, stdev=54.18 lat (msec): min=38, max=383, avg=119.09, stdev=54.18 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 66], 20.00th=[ 78], | 30.00th=[ 85], 40.00th=[ 95], 50.00th=[ 108], 60.00th=[ 117], | 70.00th=[ 132], 80.00th=[ 161], 90.00th=[ 190], 95.00th=[ 222], | 99.00th=[ 309], 99.50th=[ 363], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 31, max= 223, per=24.59%, avg=103.28, stdev=46.47, samples=115 iops : min= 1, max= 13, avg= 5.73, stdev= 2.99, samples=115 lat (msec) : 10=2.08%, 20=21.48%, 50=18.62%, 100=26.04%, 250=30.34% lat (msec) : 500=1.43% cpu : usr=0.04%, sys=1.75%, ctx=1404, 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=146033: Sat Aug 22 07:29:50 2026 read: IOPS=6, BW=101KiB/s (104kB/s)(6032KiB/59662msec) clat (msec): min=8, max=313, avg=37.56, stdev=40.99 lat (msec): min=8, max=313, avg=37.56, stdev=40.99 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 51], 90.00th=[ 84], 95.00th=[ 125], | 99.00th=[ 194], 99.50th=[ 309], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 320, per=27.65%, avg=110.34, stdev=72.46, samples=106 iops : min= 1, max= 20, avg= 6.18, stdev= 4.59, samples=106 write: IOPS=6, BW=105KiB/s (107kB/s)(6256KiB/59662msec); 0 zone resets clat (msec): min=40, max=378, avg=116.19, stdev=55.03 lat (msec): min=40, max=378, avg=116.20, stdev=55.02 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 77], | 30.00th=[ 85], 40.00th=[ 91], 50.00th=[ 100], 60.00th=[ 112], | 70.00th=[ 128], 80.00th=[ 148], 90.00th=[ 182], 95.00th=[ 232], | 99.00th=[ 326], 99.50th=[ 372], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 30, max= 223, per=25.12%, avg=105.51, stdev=47.37, samples=115 iops : min= 1, max= 13, avg= 5.86, stdev= 3.07, samples=115 lat (msec) : 10=1.30%, 20=19.01%, 50=19.92%, 100=30.99%, 250=26.56% lat (msec) : 500=2.21% cpu : usr=0.04%, sys=1.84%, ctx=1464, 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=400KiB/s (410kB/s), 95.9KiB/s-106KiB/s (98.2kB/s-108kB/s), io=23.4MiB (24.5MB), run=59178-59893msec WRITE: bw=421KiB/s (431kB/s), 102KiB/s-109KiB/s (104kB/s-112kB/s), io=24.6MiB (25.8MB), run=59178-59893msec 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=146048: Sat Aug 22 07:30:03 2026 read: IOPS=2, BW=2066KiB/s (2115kB/s)(7168KiB/3470msec) clat (msec): min=82, max=237, avg=134.20, stdev=56.45 lat (msec): min=82, max=237, avg=134.20, stdev=56.45 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 84], | 30.00th=[ 94], 40.00th=[ 94], 50.00th=[ 125], 60.00th=[ 150], | 70.00th=[ 150], 80.00th=[ 167], 90.00th=[ 239], 95.00th=[ 239], | 99.00th=[ 239], 99.50th=[ 239], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 1861, max= 5941, per=96.53%, avg=3957.67, stdev=2042.36, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1476KiB/s (1511kB/s)(5120KiB/3470msec); 0 zone resets clat (msec): min=166, max=937, avg=486.24, stdev=282.47 lat (msec): min=166, max=937, avg=486.32, stdev=282.47 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1861, max= 2039, per=34.36%, avg=1972.25, stdev=83.87, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=25.00%, 250=41.67%, 500=25.00%, 1000=8.33% cpu : usr=0.00%, sys=4.61%, ctx=70, 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=146049: Sat Aug 22 07:30:03 2026 read: IOPS=0, BW=410KiB/s (420kB/s)(2048KiB/4995msec) clat (msec): min=100, max=811, avg=455.96, stdev=502.86 lat (msec): min=100, max=811, avg=455.96, stdev=502.86 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 101], | 30.00th=[ 101], 40.00th=[ 101], 50.00th=[ 101], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1984, max= 2023, per=48.87%, avg=2003.50, stdev=27.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2050KiB/s (2099kB/s)(10.0MiB/4995msec); 0 zone resets clat (msec): min=208, max=797, avg=405.04, stdev=178.78 lat (msec): min=209, max=797, avg=405.24, stdev=178.69 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 251], | 30.00th=[ 296], 40.00th=[ 321], 50.00th=[ 326], 60.00th=[ 347], | 70.00th=[ 422], 80.00th=[ 502], 90.00th=[ 584], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1996, max= 4071, per=46.68%, avg=2679.33, stdev=1016.28, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=16.67%, 500=58.33%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=4.08%, ctx=94, 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=146050: Sat Aug 22 07:30:03 2026 read: IOPS=1, BW=1341KiB/s (1374kB/s)(6144KiB/4580msec) clat (msec): min=133, max=307, avg=231.76, stdev=70.97 lat (msec): min=133, max=307, avg=231.76, stdev=70.97 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 271], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 309], 95.00th=[ 309], | 99.00th=[ 309], 99.50th=[ 309], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 1861, max= 3968, per=59.87%, avg=2454.50, stdev=1011.50, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1341KiB/s (1374kB/s)(6144KiB/4580msec); 0 zone resets clat (msec): min=243, max=1604, avg=517.23, stdev=535.16 lat (msec): min=243, max=1604, avg=517.32, stdev=535.16 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 351], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 1861, max= 2035, per=34.55%, avg=1983.20, stdev=76.55, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=33.33%, 500=58.33%, 2000=8.33% cpu : usr=0.00%, sys=3.28%, ctx=71, 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=146051: Sat Aug 22 07:30:03 2026 read: IOPS=1, BW=1201KiB/s (1230kB/s)(5120KiB/4264msec) clat (msec): min=112, max=395, avg=266.23, stdev=120.11 lat (msec): min=112, max=395, avg=266.23, stdev=120.11 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 1878, max= 3923, per=63.05%, avg=2585.00, stdev=1159.36, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1681KiB/s (1721kB/s)(7168KiB/4264msec); 0 zone resets clat (msec): min=187, max=794, avg=407.46, stdev=225.63 lat (msec): min=187, max=794, avg=407.57, stdev=225.63 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 207], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 338], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 642], 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= 1381, max= 4055, per=41.27%, avg=2368.75, stdev=1163.92, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.02%, sys=3.64%, ctx=82, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4100KiB/s (4199kB/s), 410KiB/s-2066KiB/s (420kB/s-2115kB/s), io=20.0MiB (20.0MB), run=3470-4995msec WRITE: bw=5740KiB/s (5878kB/s), 1341KiB/s-2050KiB/s (1374kB/s-2099kB/s), io=28.0MiB (29.4MB), run=3470-4995msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146053: Sat Aug 22 07:30:03 2026 read: IOPS=2, BW=2052KiB/s (2101kB/s)(7168KiB/3493msec) clat (usec): min=435, max=316659, avg=183833.96, stdev=108202.22 lat (usec): min=436, max=316660, avg=183835.31, stdev=108202.12 clat percentiles (usec): | 1.00th=[ 437], 5.00th=[ 437], 10.00th=[ 437], 20.00th=[114820], | 30.00th=[125305], 40.00th=[125305], 50.00th=[227541], 60.00th=[246416], | 70.00th=[246416], 80.00th=[256902], 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= 1899, max= 4096, per=67.58%, avg=3013.50, stdev=1231.62, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1466KiB/s (1501kB/s)(5120KiB/3493msec); 0 zone resets clat (msec): min=224, max=633, avg=440.69, stdev=171.17 lat (msec): min=224, max=633, avg=440.78, stdev=171.17 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1996, max= 2031, per=32.24%, avg=2012.50, stdev=17.14, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=41.67%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=12.54%, ctx=283, 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=146054: Sat Aug 22 07:30:03 2026 read: IOPS=0, BW=446KiB/s (457kB/s)(2048KiB/4592msec) clat (msec): min=206, max=523, avg=365.05, stdev=224.48 lat (msec): min=206, max=523, avg=365.05, stdev=224.48 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 1943, max= 1996, per=44.17%, avg=1969.50, stdev=37.48, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2230KiB/s (2283kB/s)(10.0MiB/4592msec); 0 zone resets clat (msec): min=178, max=844, avg=385.64, stdev=248.36 lat (msec): min=178, max=844, avg=385.95, stdev=248.31 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 192], | 30.00th=[ 199], 40.00th=[ 201], 50.00th=[ 209], 60.00th=[ 292], | 70.00th=[ 489], 80.00th=[ 506], 90.00th=[ 751], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 2000, max= 4063, per=44.61%, avg=2785.20, stdev=1047.30, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (msec) : 250=50.00%, 500=16.67%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=12.07%, ctx=169, 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=146055: Sat Aug 22 07:30:03 2026 read: IOPS=1, BW=1925KiB/s (1972kB/s)(6144KiB/3191msec) clat (msec): min=2, max=336, avg=212.96, stdev=133.81 lat (msec): min=2, max=336, avg=212.96, stdev=133.81 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 121], | 30.00th=[ 121], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 309], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 1996, max= 4096, per=56.71%, avg=2528.75, stdev=1044.90, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1925KiB/s (1972kB/s)(6144KiB/3191msec); 0 zone resets clat (msec): min=120, max=719, avg=318.46, stdev=216.89 lat (msec): min=121, max=719, avg=318.65, stdev=216.77 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 334], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1996, max= 3676, per=37.62%, avg=2348.60, stdev=742.33, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 4=8.33%, 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=15.99%, ctx=265, 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=146056: Sat Aug 22 07:30:03 2026 read: IOPS=1, BW=1185KiB/s (1213kB/s)(5120KiB/4321msec) clat (usec): min=428, max=389245, avg=242092.37, stdev=157945.55 lat (usec): min=429, max=389246, avg=242093.49, stdev=157945.75 clat percentiles (usec): | 1.00th=[ 429], 5.00th=[ 429], 10.00th=[ 429], 20.00th=[ 429], | 30.00th=[198181], 40.00th=[198181], 50.00th=[246416], 60.00th=[246416], | 70.00th=[375391], 80.00th=[375391], 90.00th=[387974], 95.00th=[387974], | 99.00th=[387974], 99.50th=[387974], 99.90th=[387974], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 3923, max= 4087, per=89.82%, avg=4005.00, stdev=115.97, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1659KiB/s (1699kB/s)(7168KiB/4321msec); 0 zone resets clat (msec): min=190, max=849, avg=444.12, stdev=281.06 lat (msec): min=191, max=849, avg=444.19, stdev=281.05 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 247], | 30.00th=[ 251], 40.00th=[ 251], 50.00th=[ 284], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 818], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 1370, max= 2043, per=29.96%, avg=1870.60, stdev=281.57, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 500=8.33% lat (msec) : 250=41.67%, 500=33.33%, 1000=16.67% cpu : usr=0.00%, sys=10.93%, ctx=171, 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=4460KiB/s (4567kB/s), 446KiB/s-2052KiB/s (457kB/s-2101kB/s), io=20.0MiB (20.0MB), run=3191-4592msec WRITE: bw=6244KiB/s (6394kB/s), 1466KiB/s-2230KiB/s (1501kB/s-2283kB/s), io=28.0MiB (29.4MB), run=3191-4592msec 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=146067: Sat Aug 22 07:30:17 2026 read: IOPS=1, BW=5170KiB/s (5294kB/s)(12.0MiB/2377msec) clat (msec): min=719, max=822, avg=769.04, stdev=51.57 lat (msec): min=719, max=822, avg=769.04, stdev=51.57 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7922, max= 7984, per=100.00%, avg=7953.00, stdev=43.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=16.12%, ctx=263, 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=146068: Sat Aug 22 07:30:17 2026 read: IOPS=0, BW=1605KiB/s (1644kB/s)(4096KiB/2552msec) clat (nsec): min=765191k, max=765191k, avg=765190672.00, stdev= 0.00 lat (nsec): min=765193k, max=765193k, avg=765192984.00, stdev= 0.00 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=[ 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= 7984, max= 7984, per=100.00%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3210KiB/s (3287kB/s)(8192KiB/2552msec); 0 zone resets clat (msec): min=716, max=1041, avg=879.12, stdev=230.11 lat (msec): min=716, max=1042, avg=879.39, stdev=230.03 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 1045], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7922, max= 7922, per=91.68%, avg=7922.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.21%, ctx=178, 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=146069: Sat Aug 22 07:30:17 2026 write: IOPS=0, BW=3241KiB/s (3318kB/s)(12.0MiB/3792msec); 0 zone resets clat (msec): min=326, max=2954, avg=1257.03, stdev=1472.70 lat (msec): min=327, max=2956, avg=1258.00, stdev=1473.26 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 489], 50.00th=[ 489], 60.00th=[ 489], | 70.00th=[ 2970], 80.00th=[ 2970], 90.00th=[ 2970], 95.00th=[ 2970], | 99.00th=[ 2970], 99.50th=[ 2970], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] bw ( KiB/s): min= 7846, max= 8192, per=92.80%, avg=8019.00, stdev=244.66, 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=0.05%, sys=2.88%, ctx=55, 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=146070: Sat Aug 22 07:30:17 2026 write: IOPS=1, BW=4644KiB/s (4755kB/s)(12.0MiB/2646msec); 0 zone resets clat (msec): min=315, max=1709, avg=853.33, stdev=749.70 lat (msec): min=316, max=1710, avg=853.74, stdev=749.61 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 535], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7831, max= 7968, per=91.42%, avg=7899.50, stdev=96.87, 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=4.46%, ctx=53, 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=6420KiB/s (6574kB/s), 1605KiB/s-5170KiB/s (1644kB/s-5294kB/s), io=16.0MiB (16.8MB), run=2377-2552msec WRITE: bw=8641KiB/s (8849kB/s), 3210KiB/s-4644KiB/s (3287kB/s-4755kB/s), io=32.0MiB (33.6MB), run=2552-3792msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146063: Sat Aug 22 07:30:17 2026 read: IOPS=2, BW=9548KiB/s (9777kB/s)(12.0MiB/1287msec) clat (msec): min=214, max=625, avg=368.53, stdev=223.98 lat (msec): min=214, max=625, avg=368.54, stdev=223.98 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 266], 50.00th=[ 266], 60.00th=[ 266], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=11.35%, ctx=70, 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=146064: Sat Aug 22 07:30:17 2026 read: IOPS=0, BW=1407KiB/s (1441kB/s)(4096KiB/2911msec) clat (nsec): min=859834k, max=859834k, avg=859833615.00, stdev= 0.00 lat (nsec): min=859836k, max=859836k, avg=859836278.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2814KiB/s (2882kB/s)(8192KiB/2911msec); 0 zone resets clat (msec): min=974, max=1001, avg=987.64, stdev=18.96 lat (msec): min=974, max=1001, avg=988.13, stdev=19.12 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 1003], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 8094, max= 8094, per=99.42%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.12%, ctx=97, 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=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=146065: Sat Aug 22 07:30:17 2026 write: IOPS=0, BW=3053KiB/s (3126kB/s)(12.0MiB/4025msec); 0 zone resets clat (msec): min=802, max=2135, avg=1307.52, stdev=722.43 lat (msec): min=803, max=2135, avg=1307.88, stdev=722.46 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 2140], 80.00th=[ 2140], 90.00th=[ 2140], 95.00th=[ 2140], | 99.00th=[ 2140], 99.50th=[ 2140], 99.90th=[ 2140], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 8078, max= 8143, per=99.63%, avg=8110.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=4.57%, ctx=76, 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=146066: Sat Aug 22 07:30:17 2026 write: IOPS=0, BW=3703KiB/s (3792kB/s)(12.0MiB/3318msec); 0 zone resets clat (msec): min=724, max=1331, avg=1065.76, stdev=310.68 lat (msec): min=724, max=1332, avg=1066.00, stdev=310.64 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 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= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, 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=5.19%, ctx=76, 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=5628KiB/s (5763kB/s), 1407KiB/s-9548KiB/s (1441kB/s-9777kB/s), io=16.0MiB (16.8MB), run=1287-2911msec WRITE: bw=8141KiB/s (8337kB/s), 2814KiB/s-3703KiB/s (2882kB/s-3792kB/s), io=32.0MiB (33.6MB), run=2911-4025msec