== sanity test 398b: DIO and buffer IO race ============== 22:16:15 (1781230575) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.13555 s, 8.2 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=146191: Thu Jun 11 22:18:49 2026 read: IOPS=11, BW=46.5KiB/s (47.6kB/s)(5992KiB/128799msec) clat (usec): min=32, max=475996, avg=42112.55, stdev=32134.79 lat (usec): min=32, max=475997, avg=42115.57, stdev=32134.35 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 58], 10.00th=[ 114], 20.00th=[ 19530], | 30.00th=[ 25560], 40.00th=[ 30278], 50.00th=[ 36439], 60.00th=[ 43254], | 70.00th=[ 50594], 80.00th=[ 63701], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[141558], 99.50th=[162530], 99.90th=[214959], 99.95th=[476054], | 99.99th=[476054] bw ( KiB/s): min= 7, max= 95, per=25.56%, avg=46.26, stdev=18.65, samples=252 iops : min= 1, max= 23, avg=10.96, stdev= 4.68, samples=252 write: IOPS=12, BW=48.9KiB/s (50.1kB/s)(6296KiB/128799msec); 0 zone resets clat (usec): min=1010, max=405654, avg=41659.33, stdev=42475.11 lat (usec): min=1011, max=405656, avg=41661.58, stdev=42475.80 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1401], 10.00th=[ 1975], 20.00th=[ 4293], | 30.00th=[ 9241], 40.00th=[ 19268], 50.00th=[ 31327], 60.00th=[ 43254], | 70.00th=[ 54789], 80.00th=[ 69731], 90.00th=[ 99091], 95.00th=[124257], | 99.00th=[173016], 99.50th=[193987], 99.90th=[308282], 99.95th=[404751], | 99.99th=[404751] bw ( KiB/s): min= 7, max= 111, per=25.67%, avg=48.51, stdev=20.21, samples=253 iops : min= 1, max= 27, avg=11.52, stdev= 5.07, samples=253 lat (usec) : 50=0.72%, 100=4.07%, 250=0.23%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.37%, 4=4.56%, 10=6.35%, 20=9.41%, 50=36.46% lat (msec) : 100=25.59%, 250=6.93%, 500=0.16% cpu : usr=0.07%, sys=4.99%, ctx=6428, 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=146192: Thu Jun 11 22:18:49 2026 read: IOPS=11, BW=45.5KiB/s (46.5kB/s)(5940KiB/130692msec) clat (usec): min=31, max=366137, avg=41454.10, stdev=33351.17 lat (usec): min=31, max=366141, avg=41458.00, stdev=33350.72 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 82], 20.00th=[ 17957], | 30.00th=[ 23725], 40.00th=[ 30016], 50.00th=[ 36439], 60.00th=[ 43779], | 70.00th=[ 50594], 80.00th=[ 62129], 90.00th=[ 81265], 95.00th=[ 98042], | 99.00th=[141558], 99.50th=[162530], 99.90th=[354419], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 6, max= 127, per=25.06%, avg=45.35, stdev=20.18, samples=256 iops : min= 1, max= 31, avg=10.72, stdev= 5.07, samples=256 write: IOPS=12, BW=48.6KiB/s (49.7kB/s)(6348KiB/130692msec); 0 zone resets clat (usec): min=859, max=361931, avg=43429.59, stdev=45084.58 lat (usec): min=860, max=361932, avg=43441.99, stdev=45080.66 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1369], 10.00th=[ 1909], 20.00th=[ 4555], | 30.00th=[ 8848], 40.00th=[ 19792], 50.00th=[ 32637], 60.00th=[ 43779], | 70.00th=[ 55837], 80.00th=[ 74974], 90.00th=[102237], 95.00th=[131597], | 99.00th=[198181], 99.50th=[238027], 99.90th=[274727], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 7, max= 112, per=25.37%, avg=47.95, stdev=21.08, samples=258 iops : min= 1, max= 28, avg=11.38, stdev= 5.31, samples=258 lat (usec) : 50=0.72%, 100=4.39%, 250=0.42%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=5.60%, 4=3.84%, 10=7.45%, 20=9.51%, 50=35.19% lat (msec) : 100=24.93%, 250=7.19%, 500=0.36% cpu : usr=0.07%, sys=5.06%, ctx=6364, 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=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=146193: Thu Jun 11 22:18:49 2026 read: IOPS=11, BW=45.4KiB/s (46.5kB/s)(6028KiB/132656msec) clat (usec): min=36, max=414820, avg=42672.34, stdev=34395.28 lat (usec): min=36, max=414822, avg=42673.78, stdev=34395.33 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 135], 20.00th=[ 19006], | 30.00th=[ 25035], 40.00th=[ 30540], 50.00th=[ 35914], 60.00th=[ 43254], | 70.00th=[ 51119], 80.00th=[ 62129], 90.00th=[ 82314], 95.00th=[100140], | 99.00th=[158335], 99.50th=[196084], 99.90th=[261096], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 7, max= 142, per=24.89%, avg=45.05, stdev=22.80, samples=261 iops : min= 1, max= 35, avg=10.65, stdev= 5.71, samples=261 write: IOPS=11, BW=47.2KiB/s (48.3kB/s)(6260KiB/132656msec); 0 zone resets clat (usec): min=889, max=342839, avg=43552.86, stdev=44065.95 lat (usec): min=890, max=342841, avg=43558.94, stdev=44069.15 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1401], 10.00th=[ 2114], 20.00th=[ 4883], | 30.00th=[ 10683], 40.00th=[ 22152], 50.00th=[ 32900], 60.00th=[ 43779], | 70.00th=[ 57410], 80.00th=[ 73925], 90.00th=[ 96994], 95.00th=[127402], | 99.00th=[202376], 99.50th=[233833], 99.90th=[337642], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 7, max= 142, per=24.67%, avg=46.63, stdev=20.34, samples=262 iops : min= 1, max= 35, avg=11.05, stdev= 5.13, samples=262 lat (usec) : 50=0.68%, 100=4.07%, 250=0.33%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=4.95%, 4=3.91%, 10=6.38%, 20=9.67%, 50=36.65% lat (msec) : 100=26.01%, 250=6.97%, 500=0.23% cpu : usr=0.07%, sys=4.99%, ctx=6583, 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=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=146194: Thu Jun 11 22:18:49 2026 read: IOPS=11, BW=47.4KiB/s (48.5kB/s)(6052KiB/127659msec) clat (usec): min=22, max=552775, avg=41116.99, stdev=33266.91 lat (usec): min=22, max=552777, avg=41119.42, stdev=33268.94 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 57], 10.00th=[ 70], 20.00th=[ 17957], | 30.00th=[ 23725], 40.00th=[ 29754], 50.00th=[ 34866], 60.00th=[ 42730], | 70.00th=[ 51119], 80.00th=[ 63177], 90.00th=[ 80217], 95.00th=[ 93848], | 99.00th=[137364], 99.50th=[154141], 99.90th=[304088], 99.95th=[549454], | 99.99th=[549454] bw ( KiB/s): min= 7, max= 95, per=26.16%, avg=47.35, stdev=19.23, samples=250 iops : min= 1, max= 23, avg=11.23, stdev= 4.87, samples=250 write: IOPS=12, BW=48.8KiB/s (50.0kB/s)(6236KiB/127659msec); 0 zone resets clat (usec): min=898, max=241127, avg=41869.38, stdev=42412.84 lat (usec): min=900, max=241128, avg=41873.25, stdev=42413.22 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1385], 10.00th=[ 1827], 20.00th=[ 4293], | 30.00th=[ 8979], 40.00th=[ 18744], 50.00th=[ 31589], 60.00th=[ 42730], | 70.00th=[ 53740], 80.00th=[ 71828], 90.00th=[103285], 95.00th=[126354], | 99.00th=[181404], 99.50th=[210764], 99.90th=[235930], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 7, max= 140, per=25.70%, avg=48.58, stdev=20.59, samples=251 iops : min= 1, max= 35, avg=11.54, stdev= 5.23, samples=251 lat (usec) : 50=0.81%, 100=4.92%, 250=0.36%, 500=0.10%, 1000=0.03% lat (msec) : 2=5.53%, 4=4.17%, 10=6.97%, 20=9.11%, 50=35.51% lat (msec) : 100=24.61%, 250=7.81%, 500=0.03%, 750=0.03% cpu : usr=0.07%, sys=5.10%, ctx=6351, 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=181KiB/s (185kB/s), 45.4KiB/s-47.4KiB/s (46.5kB/s-48.5kB/s), io=23.4MiB (24.6MB), run=127659-132656msec WRITE: bw=190KiB/s (194kB/s), 47.2KiB/s-48.9KiB/s (48.3kB/s-50.1kB/s), io=24.6MiB (25.7MB), run=127659-132656msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146186: Thu Jun 11 22:20:49 2026 read: IOPS=5, BW=23.6KiB/s (24.1kB/s)(5992KiB/254160msec) clat (msec): min=4, max=876, avg=34.63, stdev=42.59 lat (msec): min=4, max=876, avg=34.63, stdev=42.59 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 48], 90.00th=[ 80], 95.00th=[ 104], | 99.00th=[ 180], 99.50th=[ 228], 99.90th=[ 388], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 96, per=27.44%, avg=25.80, stdev=18.13, samples=449 iops : min= 1, max= 24, avg= 5.81, stdev= 4.57, samples=449 write: IOPS=6, BW=24.8KiB/s (25.4kB/s)(6296KiB/254160msec); 0 zone resets clat (msec): min=29, max=549, avg=128.21, stdev=66.54 lat (msec): min=29, max=549, avg=128.22, stdev=66.54 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 78], | 30.00th=[ 87], 40.00th=[ 97], 50.00th=[ 109], 60.00th=[ 125], | 70.00th=[ 146], 80.00th=[ 176], 90.00th=[ 218], 95.00th=[ 249], | 99.00th=[ 363], 99.50th=[ 405], 99.90th=[ 542], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 56, per=25.08%, avg=24.57, stdev=12.05, samples=494 iops : min= 1, max= 14, avg= 5.50, stdev= 3.10, samples=494 lat (msec) : 10=4.82%, 20=18.52%, 50=17.35%, 100=27.08%, 250=29.49% lat (msec) : 500=2.57%, 750=0.13%, 1000=0.03% cpu : usr=0.04%, sys=1.35%, ctx=5268, 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=146187: Thu Jun 11 22:20:49 2026 read: IOPS=5, BW=23.4KiB/s (23.9kB/s)(5940KiB/254199msec) clat (msec): min=5, max=956, avg=35.32, stdev=43.94 lat (msec): min=5, max=956, avg=35.33, stdev=43.94 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 47], 90.00th=[ 78], 95.00th=[ 101], | 99.00th=[ 203], 99.50th=[ 251], 99.90th=[ 363], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 102, per=28.16%, avg=26.47, stdev=18.06, samples=434 iops : min= 1, max= 25, avg= 5.99, stdev= 4.59, samples=434 write: IOPS=6, BW=24.0KiB/s (25.6kB/s)(6348KiB/254199msec); 0 zone resets clat (msec): min=27, max=551, avg=126.81, stdev=65.35 lat (msec): min=27, max=551, avg=126.81, stdev=65.35 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 75], | 30.00th=[ 87], 40.00th=[ 97], 50.00th=[ 109], 60.00th=[ 124], | 70.00th=[ 142], 80.00th=[ 174], 90.00th=[ 218], 95.00th=[ 259], | 99.00th=[ 342], 99.50th=[ 368], 99.90th=[ 481], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 72, per=25.25%, avg=24.75, stdev=12.41, samples=495 iops : min= 1, max= 18, avg= 5.54, stdev= 3.18, samples=495 lat (msec) : 10=4.07%, 20=17.38%, 50=19.53%, 100=27.28%, 250=28.42% lat (msec) : 500=3.26%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.37%, ctx=5199, 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=146188: Thu Jun 11 22:20:49 2026 read: IOPS=5, BW=23.9KiB/s (24.5kB/s)(6028KiB/252149msec) clat (msec): min=5, max=373, avg=36.13, stdev=37.03 lat (msec): min=5, max=373, avg=36.13, stdev=37.03 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 53], 90.00th=[ 83], 95.00th=[ 107], | 99.00th=[ 184], 99.50th=[ 224], 99.90th=[ 359], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 119, per=27.51%, avg=25.86, stdev=17.79, samples=451 iops : min= 1, max= 29, avg= 5.82, stdev= 4.50, samples=451 write: IOPS=6, BW=24.8KiB/s (25.4kB/s)(6260KiB/252149msec); 0 zone resets clat (msec): min=30, max=1121, avg=126.02, stdev=67.53 lat (msec): min=30, max=1121, avg=126.02, stdev=67.53 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 66], 20.00th=[ 77], | 30.00th=[ 86], 40.00th=[ 96], 50.00th=[ 108], 60.00th=[ 123], | 70.00th=[ 144], 80.00th=[ 174], 90.00th=[ 213], 95.00th=[ 249], | 99.00th=[ 321], 99.50th=[ 359], 99.90th=[ 567], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 56, per=24.93%, avg=24.43, stdev=12.28, samples=494 iops : min= 1, max= 14, avg= 5.47, stdev= 3.14, samples=494 lat (msec) : 10=4.39%, 20=17.02%, 50=18.85%, 100=28.68%, 250=28.39% lat (msec) : 500=2.60%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.38%, ctx=5196, 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=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=146189: Thu Jun 11 22:20:49 2026 read: IOPS=5, BW=23.8KiB/s (24.4kB/s)(6052KiB/254171msec) clat (msec): min=4, max=381, avg=34.46, stdev=37.61 lat (msec): min=4, max=381, avg=34.47, stdev=37.61 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 48], 90.00th=[ 74], 95.00th=[ 102], | 99.00th=[ 188], 99.50th=[ 226], 99.90th=[ 372], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 95, per=28.77%, avg=27.04, stdev=18.08, samples=433 iops : min= 1, max= 23, avg= 6.12, stdev= 4.56, samples=433 write: IOPS=6, BW=24.5KiB/s (25.1kB/s)(6236KiB/254171msec); 0 zone resets clat (msec): min=24, max=1033, avg=129.29, stdev=69.54 lat (msec): min=24, max=1033, avg=129.29, stdev=69.54 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 66], 20.00th=[ 78], | 30.00th=[ 88], 40.00th=[ 99], 50.00th=[ 110], 60.00th=[ 126], | 70.00th=[ 148], 80.00th=[ 171], 90.00th=[ 218], 95.00th=[ 259], | 99.00th=[ 368], 99.50th=[ 401], 99.90th=[ 542], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 63, per=24.83%, avg=24.34, stdev=11.67, samples=494 iops : min= 1, max= 15, avg= 5.44, stdev= 3.00, samples=494 lat (msec) : 10=3.65%, 20=18.49%, 50=18.98%, 100=26.56%, 250=29.10% lat (msec) : 500=3.16%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.28%, ctx=5105, 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=94.5KiB/s (96.7kB/s), 23.4KiB/s-23.9KiB/s (23.9kB/s-24.5kB/s), io=23.4MiB (24.6MB), run=252149-254199msec WRITE: bw=98.9KiB/s (101kB/s), 24.5KiB/s-24.0KiB/s (25.1kB/s-25.6kB/s), io=24.6MiB (25.7MB), run=252149-254199msec 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=146245: Thu Jun 11 22:21:35 2026 read: IOPS=10, BW=171KiB/s (175kB/s)(5920KiB/34646msec) clat (usec): min=38, max=262001, avg=47639.37, stdev=39179.25 lat (usec): min=38, max=262002, avg=47648.62, stdev=39179.82 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 59], 10.00th=[ 65], 20.00th=[ 91], | 30.00th=[ 29230], 40.00th=[ 36963], 50.00th=[ 43254], 60.00th=[ 51119], | 70.00th=[ 63177], 80.00th=[ 77071], 90.00th=[ 99091], 95.00th=[114820], | 99.00th=[164627], 99.50th=[196084], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 27, max= 377, per=24.68%, avg=170.51, stdev=71.10, samples=67 iops : min= 1, max= 23, avg= 9.96, stdev= 4.52, samples=67 write: IOPS=11, BW=184KiB/s (188kB/s)(6368KiB/34646msec); 0 zone resets clat (usec): min=1506, max=407161, avg=42360.31, stdev=44924.00 lat (usec): min=1507, max=407164, avg=42364.06, stdev=44924.34 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2073], 10.00th=[ 3720], 20.00th=[ 6652], | 30.00th=[ 10421], 40.00th=[ 17433], 50.00th=[ 27919], 60.00th=[ 40633], | 70.00th=[ 55837], 80.00th=[ 72877], 90.00th=[106431], 95.00th=[126354], | 99.00th=[170918], 99.50th=[225444], 99.90th=[408945], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 31, max= 346, per=25.33%, avg=184.18, stdev=80.88, samples=67 iops : min= 1, max= 21, avg=10.84, stdev= 5.14, samples=67 lat (usec) : 50=1.17%, 100=8.98%, 250=0.65%, 500=0.13%, 750=0.13% lat (msec) : 2=2.21%, 4=3.78%, 10=9.38%, 20=7.42%, 50=29.04% lat (msec) : 100=27.21%, 250=9.64%, 500=0.26% cpu : usr=0.06%, sys=4.81%, ctx=1401, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146246: Thu Jun 11 22:21:35 2026 read: IOPS=10, BW=173KiB/s (177kB/s)(5744KiB/33271msec) clat (usec): min=35, max=267285, avg=48657.75, stdev=40661.49 lat (usec): min=35, max=267287, avg=48668.62, stdev=40652.19 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 57], 10.00th=[ 68], 20.00th=[ 594], | 30.00th=[ 27132], 40.00th=[ 35390], 50.00th=[ 44827], 60.00th=[ 52691], | 70.00th=[ 63701], 80.00th=[ 79168], 90.00th=[104334], 95.00th=[113771], | 99.00th=[181404], 99.50th=[238027], 99.90th=[267387], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 31, max= 377, per=25.57%, avg=176.67, stdev=72.84, samples=63 iops : min= 1, max= 23, avg=10.35, stdev= 4.63, samples=63 write: IOPS=12, BW=197KiB/s (201kB/s)(6544KiB/33271msec); 0 zone resets clat (usec): min=1308, max=365526, avg=38077.81, stdev=43750.92 lat (usec): min=1310, max=365530, avg=38082.56, stdev=43750.64 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1958], 10.00th=[ 2769], 20.00th=[ 5342], | 30.00th=[ 8291], 40.00th=[ 12387], 50.00th=[ 21627], 60.00th=[ 34866], | 70.00th=[ 46400], 80.00th=[ 63701], 90.00th=[102237], 95.00th=[125305], | 99.00th=[181404], 99.50th=[187696], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 31, max= 416, per=27.08%, avg=196.86, stdev=88.86, samples=64 iops : min= 1, max= 26, avg=11.61, stdev= 5.68, samples=64 lat (usec) : 50=1.82%, 100=6.64%, 250=0.78%, 750=0.13%, 1000=0.13% lat (msec) : 2=3.39%, 4=4.95%, 10=10.81%, 20=8.72%, 50=29.04% lat (msec) : 100=22.92%, 250=10.42%, 500=0.26% cpu : usr=0.08%, sys=5.34%, ctx=1468, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146247: Thu Jun 11 22:21:35 2026 read: IOPS=11, BW=184KiB/s (188kB/s)(6256KiB/34076msec) clat (usec): min=32, max=369319, avg=46619.34, stdev=42876.44 lat (usec): min=32, max=369320, avg=46621.35, stdev=42876.33 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 56], 10.00th=[ 63], 20.00th=[ 85], | 30.00th=[ 24773], 40.00th=[ 32900], 50.00th=[ 40633], 60.00th=[ 53216], | 70.00th=[ 61604], 80.00th=[ 74974], 90.00th=[ 92799], 95.00th=[109577], | 99.00th=[173016], 99.50th=[346031], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 55, max= 445, per=26.68%, avg=184.36, stdev=82.77, samples=66 iops : min= 3, max= 27, avg=10.83, stdev= 5.28, samples=66 write: IOPS=11, BW=177KiB/s (181kB/s)(6032KiB/34076msec); 0 zone resets clat (usec): min=1664, max=330764, avg=41828.10, stdev=43924.71 lat (usec): min=1667, max=330765, avg=41830.64, stdev=43924.86 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2180], 10.00th=[ 3884], 20.00th=[ 6980], | 30.00th=[ 11076], 40.00th=[ 16712], 50.00th=[ 25822], 60.00th=[ 38011], | 70.00th=[ 53740], 80.00th=[ 70779], 90.00th=[102237], 95.00th=[127402], | 99.00th=[196084], 99.50th=[235930], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 31, max= 446, per=24.09%, avg=175.12, stdev=73.36, samples=66 iops : min= 1, max= 27, avg=10.26, stdev= 4.65, samples=66 lat (usec) : 50=1.43%, 100=9.38%, 250=0.91%, 500=0.13% lat (msec) : 2=2.34%, 4=3.39%, 10=8.07%, 20=8.85%, 50=27.99% lat (msec) : 100=28.26%, 250=8.85%, 500=0.39% cpu : usr=0.06%, sys=5.09%, ctx=1484, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146248: Thu Jun 11 22:21:35 2026 read: IOPS=11, BW=186KiB/s (191kB/s)(6032KiB/32402msec) clat (usec): min=31, max=354530, avg=48377.73, stdev=46972.04 lat (usec): min=31, max=354532, avg=48384.51, stdev=46975.08 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 60], 10.00th=[ 65], 20.00th=[ 83], | 30.00th=[ 24249], 40.00th=[ 32637], 50.00th=[ 42206], 60.00th=[ 51643], | 70.00th=[ 64226], 80.00th=[ 77071], 90.00th=[100140], 95.00th=[120062], | 99.00th=[191890], 99.50th=[346031], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 63, max= 352, per=26.77%, avg=184.98, stdev=75.17, samples=63 iops : min= 3, max= 22, avg=10.87, stdev= 4.81, samples=63 write: IOPS=12, BW=193KiB/s (198kB/s)(6256KiB/32402msec); 0 zone resets clat (usec): min=1531, max=297401, avg=35682.10, stdev=39941.50 lat (usec): min=1532, max=297404, avg=35685.60, stdev=39941.33 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1958], 10.00th=[ 3195], 20.00th=[ 5997], | 30.00th=[ 8094], 40.00th=[ 11994], 50.00th=[ 20317], 60.00th=[ 32900], | 70.00th=[ 43254], 80.00th=[ 59507], 90.00th=[ 90702], 95.00th=[110625], | 99.00th=[179307], 99.50th=[246416], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 31, max= 448, per=27.03%, avg=196.48, stdev=88.17, samples=62 iops : min= 1, max= 28, avg=11.60, stdev= 5.61, samples=62 lat (usec) : 50=0.78%, 100=10.03%, 250=0.39%, 500=0.39%, 750=0.13% lat (msec) : 2=2.73%, 4=4.82%, 10=11.46%, 20=7.68%, 50=27.86% lat (msec) : 100=25.39%, 250=7.81%, 500=0.52% cpu : usr=0.09%, sys=5.03%, ctx=1367, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=691KiB/s (708kB/s), 171KiB/s-186KiB/s (175kB/s-191kB/s), io=23.4MiB (24.5MB), run=32402-34646msec WRITE: bw=727KiB/s (745kB/s), 177KiB/s-197KiB/s (181kB/s-201kB/s), io=24.6MiB (25.8MB), run=32402-34646msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146250: Thu Jun 11 22:22:23 2026 read: IOPS=4, BW=71.0KiB/s (73.7kB/s)(5920KiB/82255msec) clat (msec): min=5, max=299, avg=44.08, stdev=43.49 lat (msec): min=5, max=299, avg=44.08, stdev=43.49 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 47], 80.00th=[ 63], 90.00th=[ 99], 95.00th=[ 134], | 99.00th=[ 215], 99.50th=[ 292], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 22, max= 316, per=30.45%, avg=88.62, stdev=61.27, samples=131 iops : min= 1, max= 19, avg= 4.81, stdev= 3.88, samples=131 write: IOPS=4, BW=77.4KiB/s (79.3kB/s)(6368KiB/82255msec); 0 zone resets clat (msec): min=39, max=517, avg=165.53, stdev=88.86 lat (msec): min=39, max=517, avg=165.55, stdev=88.87 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 62], 10.00th=[ 71], 20.00th=[ 89], | 30.00th=[ 109], 40.00th=[ 130], 50.00th=[ 144], 60.00th=[ 163], | 70.00th=[ 192], 80.00th=[ 234], 90.00th=[ 296], 95.00th=[ 347], | 99.00th=[ 464], 99.50th=[ 477], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 22, max= 224, per=25.55%, avg=78.17, stdev=41.58, samples=160 iops : min= 1, max= 14, avg= 4.14, stdev= 2.68, samples=160 lat (msec) : 10=3.12%, 20=12.89%, 50=19.92%, 100=20.57%, 250=34.38% lat (msec) : 500=8.98%, 750=0.13% cpu : usr=0.03%, sys=1.09%, ctx=1276, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146251: Thu Jun 11 22:22:23 2026 read: IOPS=4, BW=70.0KiB/s (71.7kB/s)(5744KiB/82053msec) clat (msec): min=5, max=393, avg=47.43, stdev=53.59 lat (msec): min=5, max=393, avg=47.44, stdev=53.59 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 68], 90.00th=[ 108], 95.00th=[ 161], | 99.00th=[ 305], 99.50th=[ 355], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 22, max= 383, per=29.35%, avg=85.40, stdev=61.37, samples=131 iops : min= 1, max= 23, avg= 4.60, stdev= 3.86, samples=131 write: IOPS=4, BW=79.8KiB/s (81.7kB/s)(6544KiB/82053msec); 0 zone resets clat (msec): min=33, max=656, avg=158.84, stdev=83.11 lat (msec): min=33, max=656, avg=158.84, stdev=83.11 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 62], 10.00th=[ 72], 20.00th=[ 93], | 30.00th=[ 106], 40.00th=[ 124], 50.00th=[ 144], 60.00th=[ 161], | 70.00th=[ 184], 80.00th=[ 218], 90.00th=[ 271], 95.00th=[ 305], | 99.00th=[ 418], 99.50th=[ 481], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 22, max= 222, per=26.79%, avg=81.98, stdev=42.62, samples=156 iops : min= 1, max= 13, avg= 4.38, stdev= 2.74, samples=156 lat (msec) : 10=2.34%, 20=12.24%, 50=21.22%, 100=20.05%, 250=36.20% lat (msec) : 500=7.81%, 750=0.13% cpu : usr=0.03%, sys=1.06%, ctx=1256, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146252: Thu Jun 11 22:22:23 2026 read: IOPS=4, BW=78.0KiB/s (79.9kB/s)(6256KiB/80156msec) clat (msec): min=7, max=377, avg=42.84, stdev=45.78 lat (msec): min=7, max=377, avg=42.84, stdev=45.78 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 90], 95.00th=[ 130], | 99.00th=[ 247], 99.50th=[ 347], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 30, max= 448, per=32.39%, avg=94.27, stdev=71.33, samples=131 iops : min= 1, max= 28, avg= 5.13, stdev= 4.55, samples=131 write: IOPS=4, BW=75.3KiB/s (77.1kB/s)(6032KiB/80156msec); 0 zone resets clat (msec): min=47, max=630, avg=168.07, stdev=89.19 lat (msec): min=47, max=630, avg=168.08, stdev=89.19 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 91], | 30.00th=[ 112], 40.00th=[ 129], 50.00th=[ 148], 60.00th=[ 171], | 70.00th=[ 205], 80.00th=[ 241], 90.00th=[ 279], 95.00th=[ 330], | 99.00th=[ 485], 99.50th=[ 550], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 29, max= 191, per=24.94%, avg=76.33, stdev=39.07, samples=154 iops : min= 1, max= 11, avg= 4.01, stdev= 2.49, samples=154 lat (msec) : 10=1.43%, 20=16.80%, 50=20.70%, 100=19.92%, 250=32.55% lat (msec) : 500=8.20%, 750=0.39% cpu : usr=0.04%, sys=1.21%, ctx=1378, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146253: Thu Jun 11 22:22:23 2026 read: IOPS=4, BW=73.0KiB/s (75.7kB/s)(6032KiB/81556msec) clat (msec): min=5, max=313, avg=44.31, stdev=44.06 lat (msec): min=5, max=313, avg=44.33, stdev=44.06 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 63], 90.00th=[ 100], 95.00th=[ 136], | 99.00th=[ 234], 99.50th=[ 288], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 22, max= 345, per=31.26%, avg=90.97, stdev=63.32, samples=129 iops : min= 1, max= 21, avg= 4.94, stdev= 4.02, samples=129 write: IOPS=4, BW=76.7KiB/s (78.5kB/s)(6256KiB/81556msec); 0 zone resets clat (msec): min=36, max=489, avg=165.66, stdev=83.20 lat (msec): min=36, max=489, avg=165.66, stdev=83.20 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 60], 10.00th=[ 75], 20.00th=[ 91], | 30.00th=[ 110], 40.00th=[ 133], 50.00th=[ 157], 60.00th=[ 174], | 70.00th=[ 201], 80.00th=[ 226], 90.00th=[ 275], 95.00th=[ 334], | 99.00th=[ 426], 99.50th=[ 464], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 30, max= 223, per=25.63%, avg=78.42, stdev=40.62, samples=156 iops : min= 1, max= 13, avg= 4.15, stdev= 2.61, samples=156 lat (msec) : 10=3.78%, 20=11.72%, 50=21.48%, 100=20.31%, 250=35.29% lat (msec) : 500=7.42% cpu : usr=0.03%, sys=1.16%, ctx=1272, 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=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=291KiB/s (298kB/s), 70.0KiB/s-78.0KiB/s (71.7kB/s-79.9kB/s), io=23.4MiB (24.5MB), run=80156-82255msec WRITE: bw=306KiB/s (314kB/s), 75.3KiB/s-79.8KiB/s (77.1kB/s-81.7kB/s), io=24.6MiB (25.8MB), run=80156-82255msec 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=146271: Thu Jun 11 22:22:40 2026 read: IOPS=1, BW=1081KiB/s (1107kB/s)(7168KiB/6630msec) clat (usec): min=833, max=4560.8k, avg=764536.02, stdev=1677355.68 lat (usec): min=834, max=4560.8k, avg=764537.45, stdev=1677355.58 clat percentiles (usec): | 1.00th=[ 832], 5.00th=[ 832], 10.00th=[ 832], | 20.00th=[ 1680], 30.00th=[ 108528], 40.00th=[ 108528], | 50.00th=[ 166724], 60.00th=[ 235930], 70.00th=[ 235930], | 80.00th=[ 278922], 90.00th=[4529849], 95.00th=[4529849], | 99.00th=[4529849], 99.50th=[4529849], 99.90th=[4529849], | 99.95th=[4529849], 99.99th=[4529849] bw ( KiB/s): min= 1980, max= 4079, per=88.72%, avg=2739.75, stdev=991.79, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=772KiB/s (791kB/s)(5120KiB/6630msec); 0 zone resets clat (msec): min=111, max=327, avg=233.72, stdev=94.67 lat (msec): min=112, max=327, avg=233.80, stdev=94.63 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 1980, max= 3992, per=61.76%, avg=2670.33, stdev=1144.98, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 250=41.67%, 500=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=6.28%, ctx=642, 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=146272: Thu Jun 11 22:22:40 2026 read: IOPS=0, BW=313KiB/s (321kB/s)(2048KiB/6534msec) clat (usec): min=541, max=276579, avg=138560.33, stdev=195188.12 lat (usec): min=543, max=276581, avg=138562.21, stdev=195188.53 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 545], | 30.00th=[ 545], 40.00th=[ 545], 50.00th=[ 545], 60.00th=[274727], | 70.00th=[274727], 80.00th=[274727], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 1503, max= 2043, per=57.42%, avg=1773.00, stdev=381.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1567KiB/s (1605kB/s)(10.0MiB/6534msec); 0 zone resets clat (msec): min=118, max=3092, avg=616.86, stdev=898.66 lat (msec): min=118, max=3092, avg=616.96, stdev=898.66 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 122], | 30.00th=[ 140], 40.00th=[ 192], 50.00th=[ 247], 60.00th=[ 368], | 70.00th=[ 506], 80.00th=[ 625], 90.00th=[ 760], 95.00th=[ 3104], | 99.00th=[ 3104], 99.50th=[ 3104], 99.90th=[ 3104], 99.95th=[ 3104], | 99.99th=[ 3104] bw ( KiB/s): min= 1996, max= 5731, per=82.81%, avg=3580.80, stdev=1581.58, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=16.67%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=5.95%, ctx=134, 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=146273: Thu Jun 11 22:22:40 2026 read: IOPS=0, BW=930KiB/s (953kB/s)(6144KiB/6603msec) clat (usec): min=460, max=410851, avg=177586.66, stdev=156762.68 lat (usec): min=462, max=410852, avg=177595.65, stdev=156752.62 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 461], 10.00th=[ 461], 20.00th=[ 494], | 30.00th=[ 494], 40.00th=[193987], 50.00th=[193987], 60.00th=[223347], | 70.00th=[233833], 80.00th=[233833], 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= 1996, max= 4087, per=100.00%, avg=3301.00, stdev=1138.02, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=930KiB/s (953kB/s)(6144KiB/6603msec); 0 zone resets clat (msec): min=138, max=3565, avg=916.37, stdev=1324.70 lat (msec): min=138, max=3565, avg=916.47, stdev=1324.66 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 393], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 3574], 95.00th=[ 3574], | 99.00th=[ 3574], 99.50th=[ 3574], 99.90th=[ 3574], 99.95th=[ 3574], | 99.99th=[ 3574] bw ( KiB/s): min= 1910, max= 2989, per=50.77%, avg=2195.40, stdev=446.85, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 500=16.67% lat (msec) : 250=41.67%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.05%, sys=5.42%, ctx=148, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146274: Thu Jun 11 22:22:40 2026 read: IOPS=0, BW=876KiB/s (897kB/s)(5120KiB/5847msec) clat (usec): min=426, max=287406, avg=105244.47, stdev=144296.18 lat (usec): min=427, max=287407, avg=105245.73, stdev=144296.16 clat percentiles (usec): | 1.00th=[ 429], 5.00th=[ 429], 10.00th=[ 429], 20.00th=[ 429], | 30.00th=[ 594], 40.00th=[ 594], 50.00th=[ 1020], 60.00th=[ 1020], | 70.00th=[235930], 80.00th=[235930], 90.00th=[287310], 95.00th=[287310], | 99.00th=[287310], 99.50th=[287310], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 1910, max= 6131, per=100.00%, avg=4020.50, stdev=2984.70, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1226KiB/s (1255kB/s)(7168KiB/5847msec); 0 zone resets clat (msec): min=167, max=3521, avg=745.20, stdev=1238.91 lat (msec): min=167, max=3521, avg=745.38, stdev=1239.09 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 184], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 213], 60.00th=[ 226], | 70.00th=[ 226], 80.00th=[ 709], 90.00th=[ 3507], 95.00th=[ 3507], | 99.00th=[ 3507], 99.50th=[ 3507], 99.90th=[ 3507], 99.95th=[ 3507], | 99.99th=[ 3507] bw ( KiB/s): min= 1464, max= 4079, per=66.63%, avg=2881.00, stdev=1390.69, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 250=50.00%, 500=8.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=6.47%, ctx=116, 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=3089KiB/s (3163kB/s), 313KiB/s-1081KiB/s (321kB/s-1107kB/s), io=20.0MiB (20.0MB), run=5847-6630msec WRITE: bw=4325KiB/s (4428kB/s), 772KiB/s-1567KiB/s (791kB/s-1605kB/s), io=28.0MiB (29.4MB), run=5847-6630msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146276: Thu Jun 11 22:22:40 2026 read: IOPS=1, BW=1119KiB/s (1146kB/s)(7168KiB/6406msec) clat (msec): min=41, max=3485, avg=697.57, stdev=1272.12 lat (msec): min=41, max=3485, avg=697.57, stdev=1272.12 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 86], | 30.00th=[ 87], 40.00th=[ 87], 50.00th=[ 92], 60.00th=[ 130], | 70.00th=[ 130], 80.00th=[ 961], 90.00th=[ 3473], 95.00th=[ 3473], | 99.00th=[ 3473], 99.50th=[ 3473], 99.90th=[ 3473], 99.95th=[ 3473], | 99.99th=[ 3473] bw ( KiB/s): min= 1479, max= 4023, per=72.70%, avg=2320.00, stdev=981.80, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=799KiB/s (818kB/s)(5120KiB/6406msec); 0 zone resets clat (msec): min=120, max=368, avg=283.77, stdev=95.75 lat (msec): min=120, max=368, avg=283.87, stdev=95.76 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 121], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 2011, max= 4071, per=60.51%, avg=2703.00, stdev=1184.75, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 50=8.33%, 100=25.00%, 250=16.67%, 500=33.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.76%, ctx=70, 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=146277: Thu Jun 11 22:22:40 2026 read: IOPS=0, BW=330KiB/s (338kB/s)(2048KiB/6204msec) clat (msec): min=74, max=163, avg=118.97, stdev=63.35 lat (msec): min=74, max=163, avg=118.97, stdev=63.35 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 74], | 30.00th=[ 74], 40.00th=[ 74], 50.00th=[ 74], 60.00th=[ 165], | 70.00th=[ 165], 80.00th=[ 165], 90.00th=[ 165], 95.00th=[ 165], | 99.00th=[ 165], 99.50th=[ 165], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 1718, max= 2035, per=58.81%, avg=1876.50, stdev=224.15, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1651KiB/s (1690kB/s)(10.0MiB/6204msec); 0 zone resets clat (msec): min=107, max=3152, avg=593.14, stdev=931.74 lat (msec): min=107, max=3152, avg=593.55, stdev=931.62 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 174], | 30.00th=[ 180], 40.00th=[ 239], 50.00th=[ 247], 60.00th=[ 249], | 70.00th=[ 284], 80.00th=[ 330], 90.00th=[ 978], 95.00th=[ 3138], | 99.00th=[ 3138], 99.50th=[ 3138], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min= 2035, max= 4087, per=82.13%, avg=3668.60, stdev=913.23, samples=5 iops : min= 1, max= 3, avg= 2.60, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.77%, ctx=87, 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=146278: Thu Jun 11 22:22:40 2026 read: IOPS=0, BW=989KiB/s (1013kB/s)(6144KiB/6211msec) clat (msec): min=60, max=148, avg=101.66, stdev=31.08 lat (msec): min=60, max=148, avg=101.66, stdev=31.08 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 77], | 30.00th=[ 77], 40.00th=[ 101], 50.00th=[ 101], 60.00th=[ 106], | 70.00th=[ 120], 80.00th=[ 120], 90.00th=[ 148], 95.00th=[ 148], | 99.00th=[ 148], 99.50th=[ 148], 99.90th=[ 148], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 2027, max= 4071, per=100.00%, avg=3389.67, stdev=1180.10, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=989KiB/s (1013kB/s)(6144KiB/6211msec); 0 zone resets clat (msec): min=238, max=2997, avg=902.23, stdev=1056.84 lat (msec): min=238, max=2997, avg=902.67, stdev=1056.85 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 575], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 1486, max= 2048, per=43.14%, avg=1927.00, stdev=246.64, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=25.00%, 250=33.33%, 500=16.67%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.54%, 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=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=146279: Thu Jun 11 22:22:40 2026 read: IOPS=0, BW=798KiB/s (817kB/s)(5120KiB/6418msec) clat (msec): min=33, max=243, avg=112.20, stdev=78.19 lat (msec): min=33, max=243, avg=112.21, stdev=78.19 clat percentiles (msec): | 1.00th=[ 33], 5.00th=[ 33], 10.00th=[ 33], 20.00th=[ 33], | 30.00th=[ 89], 40.00th=[ 89], 50.00th=[ 93], 60.00th=[ 93], | 70.00th=[ 104], 80.00th=[ 104], 90.00th=[ 243], 95.00th=[ 243], | 99.00th=[ 243], 99.50th=[ 243], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 4071, max= 4087, per=100.00%, avg=4079.00, stdev=11.31, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1117KiB/s (1144kB/s)(7168KiB/6418msec); 0 zone resets clat (msec): min=134, max=3213, avg=821.63, stdev=1078.09 lat (msec): min=135, max=3213, avg=821.77, stdev=1078.06 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 213], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 485], 60.00th=[ 514], | 70.00th=[ 514], 80.00th=[ 818], 90.00th=[ 3205], 95.00th=[ 3205], | 99.00th=[ 3205], 99.50th=[ 3205], 99.90th=[ 3205], 99.95th=[ 3205], | 99.99th=[ 3205] bw ( KiB/s): min= 1560, max= 2039, per=43.45%, avg=1940.80, stdev=212.88, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 50=8.33%, 100=16.67%, 250=33.33%, 500=16.67%, 750=8.33% lat (msec) : 1000=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=1.79%, ctx=50, 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=3191KiB/s (3268kB/s), 330KiB/s-1119KiB/s (338kB/s-1146kB/s), io=20.0MiB (20.0MB), run=6204-6418msec WRITE: bw=4467KiB/s (4575kB/s), 799KiB/s-1651KiB/s (818kB/s-1690kB/s), io=28.0MiB (29.4MB), run=6204-6418msec 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=146286: Thu Jun 11 22:22:55 2026 read: IOPS=1, BW=4107KiB/s (4206kB/s)(12.0MiB/2992msec) clat (msec): min=772, max=1073, avg=926.69, stdev=150.91 lat (msec): min=772, max=1073, avg=926.69, stdev=150.91 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 1070], 80.00th=[ 1070], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7728, max= 8110, per=100.00%, avg=7919.00, stdev=270.11, 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=11.90%, ctx=360, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146287: Thu Jun 11 22:22:55 2026 read: IOPS=0, BW=949KiB/s (972kB/s)(4096KiB/4317msec) clat (nsec): min=789040k, max=789040k, avg=789039779.00, stdev= 0.00 lat (nsec): min=789044k, max=789044k, avg=789044207.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 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= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1898KiB/s (1943kB/s)(8192KiB/4317msec); 0 zone resets clat (msec): min=1006, max=2300, avg=1653.22, stdev=915.02 lat (msec): min=1006, max=2300, avg=1653.74, stdev=914.88 clat percentiles (msec): | 1.00th=[ 1003], 5.00th=[ 1003], 10.00th=[ 1003], 20.00th=[ 1003], | 30.00th=[ 1003], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 2299], | 70.00th=[ 2299], 80.00th=[ 2299], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7728, max= 7728, per=100.00%, avg=7728.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=3.73%, ctx=235, 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=146288: Thu Jun 11 22:22:55 2026 write: IOPS=0, BW=3300KiB/s (3379kB/s)(12.0MiB/3724msec); 0 zone resets clat (msec): min=584, max=1907, avg=1175.38, stdev=672.42 lat (msec): min=587, max=1907, avg=1176.48, stdev=671.35 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1036], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 8078, max= 8175, per=100.00%, 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=4.75%, ctx=51, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146289: Thu Jun 11 22:22:55 2026 write: IOPS=0, BW=3912KiB/s (4006kB/s)(12.0MiB/3141msec); 0 zone resets clat (msec): min=571, max=1513, avg=988.29, stdev=480.44 lat (msec): min=572, max=1514, avg=988.87, stdev=480.37 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 1519], 80.00th=[ 1519], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 8110, max= 8143, per=100.00%, avg=8126.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.19%, ctx=69, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3795KiB/s (3886kB/s), 949KiB/s-4107KiB/s (972kB/s-4206kB/s), io=16.0MiB (16.8MB), run=2992-4317msec WRITE: bw=7590KiB/s (7773kB/s), 1898KiB/s-3912KiB/s (1943kB/s-4006kB/s), io=32.0MiB (33.6MB), run=3141-4317msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146291: Thu Jun 11 22:22:56 2026 read: IOPS=0, BW=3214KiB/s (3291kB/s)(12.0MiB/3823msec) clat (msec): min=721, max=1895, avg=1248.48, stdev=596.05 lat (msec): min=721, max=1895, avg=1248.49, stdev=596.05 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1888], 80.00th=[ 1888], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 8094, max= 8159, per=100.00%, avg=8126.50, stdev=45.96, 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=2.62%, ctx=50, 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=146292: Thu Jun 11 22:22:56 2026 read: IOPS=0, BW=829KiB/s (849kB/s)(4096KiB/4939msec) clat (nsec): min=1259.1M, max=1259.1M, avg=1259073900.00, stdev= 0.00 lat (nsec): min=1259.1M, max=1259.1M, avg=1259076320.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1267], 5.00th=[ 1267], 10.00th=[ 1267], 20.00th=[ 1267], | 30.00th=[ 1267], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1659KiB/s (1698kB/s)(8192KiB/4939msec); 0 zone resets clat (msec): min=1568, max=1951, avg=1759.60, stdev=270.75 lat (msec): min=1568, max=1954, avg=1761.50, stdev=273.11 clat percentiles (msec): | 1.00th=[ 1569], 5.00th=[ 1569], 10.00th=[ 1569], 20.00th=[ 1569], | 30.00th=[ 1569], 40.00th=[ 1569], 50.00th=[ 1569], 60.00th=[ 1955], | 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= 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 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=3.14%, ctx=99, 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=146293: Thu Jun 11 22:22:56 2026 write: IOPS=0, BW=2518KiB/s (2578kB/s)(12.0MiB/4881msec); 0 zone resets clat (msec): min=552, max=2635, avg=1598.35, stdev=1041.33 lat (msec): min=559, max=2636, avg=1600.90, stdev=1038.41 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 1603], 50.00th=[ 1603], 60.00th=[ 1603], | 70.00th=[ 2635], 80.00th=[ 2635], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 8062, max= 8159, per=100.00%, avg=8110.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.19%, ctx=46, 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=146294: Thu Jun 11 22:22:56 2026 write: IOPS=0, BW=3091KiB/s (3166kB/s)(12.0MiB/3975msec); 0 zone resets clat (msec): min=517, max=2189, avg=1272.45, stdev=847.67 lat (msec): min=518, max=2192, avg=1273.77, stdev=848.88 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 8094, max= 8159, per=100.00%, avg=8126.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.13%, sys=2.64%, ctx=48, 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=3317KiB/s (3397kB/s), 829KiB/s-3214KiB/s (849kB/s-3291kB/s), io=16.0MiB (16.8MB), run=3823-4939msec WRITE: bw=6635KiB/s (6794kB/s), 1659KiB/s-3091KiB/s (1698kB/s-3166kB/s), io=32.0MiB (33.6MB), run=3975-4939msec