== sanity test 398b: DIO and buffer IO race ============== 07:14:41 (1786965281) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.503 s, 7.7 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=144568: Mon Aug 17 07:17:07 2026 read: IOPS=11, BW=47.4KiB/s (48.5kB/s)(5992KiB/126417msec) clat (usec): min=29, max=516892, avg=40871.84, stdev=36996.15 lat (usec): min=30, max=516892, avg=40873.44, stdev=36996.16 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 63], 20.00th=[ 16057], | 30.00th=[ 23200], 40.00th=[ 28181], 50.00th=[ 34341], 60.00th=[ 41157], | 70.00th=[ 51119], 80.00th=[ 62653], 90.00th=[ 81265], 95.00th=[ 95945], | 99.00th=[152044], 99.50th=[193987], 99.90th=[421528], 99.95th=[517997], | 99.99th=[517997] bw ( KiB/s): min= 7, max= 118, per=25.06%, avg=47.37, stdev=19.49, samples=245 iops : min= 1, max= 29, avg=11.20, stdev= 4.91, samples=245 write: IOPS=12, BW=49.8KiB/s (50.0kB/s)(6296KiB/126417msec); 0 zone resets clat (usec): min=816, max=1044.0k, avg=41081.95, stdev=48219.15 lat (usec): min=817, max=1044.0k, avg=41083.94, stdev=48219.24 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1352], 10.00th=[ 1598], | 20.00th=[ 4146], 30.00th=[ 8848], 40.00th=[ 18744], | 50.00th=[ 31327], 60.00th=[ 40633], 70.00th=[ 52167], | 80.00th=[ 69731], 90.00th=[ 93848], 95.00th=[ 123208], | 99.00th=[ 183501], 99.50th=[ 214959], 99.90th=[ 278922], | 99.95th=[1044382], 99.99th=[1044382] bw ( KiB/s): min= 7, max= 143, per=25.17%, avg=49.84, stdev=22.56, samples=245 iops : min= 1, max= 35, avg=11.82, stdev= 5.67, samples=245 lat (usec) : 50=0.85%, 100=5.44%, 250=0.36%, 500=0.10%, 750=0.10% lat (usec) : 1000=0.13% lat (msec) : 2=6.12%, 4=3.84%, 10=6.90%, 20=9.02%, 50=35.71% lat (msec) : 100=24.90%, 250=6.28%, 500=0.20%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=5.48%, ctx=6269, 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=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=144569: Mon Aug 17 07:17:07 2026 read: IOPS=11, BW=47.8KiB/s (48.9kB/s)(5940KiB/124380msec) clat (usec): min=27, max=1162.1k, avg=39057.13, stdev=41568.35 lat (usec): min=28, max=1162.1k, avg=39058.87, stdev=41568.38 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 62], | 20.00th=[ 15008], 30.00th=[ 22676], 40.00th=[ 28443], | 50.00th=[ 34341], 60.00th=[ 40109], 70.00th=[ 47973], | 80.00th=[ 58983], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[ 133694], 99.50th=[ 152044], 99.90th=[ 242222], | 99.95th=[1166017], 99.99th=[1166017] bw ( KiB/s): min= 7, max= 111, per=25.33%, avg=47.88, stdev=22.53, samples=242 iops : min= 1, max= 27, avg=11.34, stdev= 5.66, samples=242 write: IOPS=12, BW=51.0KiB/s (52.3kB/s)(6348KiB/124380msec); 0 zone resets clat (usec): min=930, max=392948, avg=41487.54, stdev=44592.65 lat (usec): min=931, max=392949, avg=41494.46, stdev=44597.54 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1336], 10.00th=[ 1467], 20.00th=[ 3785], | 30.00th=[ 7898], 40.00th=[ 18220], 50.00th=[ 29492], 60.00th=[ 40109], | 70.00th=[ 53740], 80.00th=[ 72877], 90.00th=[101188], 95.00th=[120062], | 99.00th=[189793], 99.50th=[246416], 99.90th=[358613], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 7, max= 167, per=25.90%, avg=51.28, stdev=22.59, samples=242 iops : min= 1, max= 41, avg=12.19, stdev= 5.68, samples=242 lat (usec) : 50=1.04%, 100=6.12%, 250=0.26%, 500=0.03%, 750=0.10% lat (usec) : 1000=0.03% lat (msec) : 2=7.10%, 4=3.71%, 10=6.77%, 20=8.85%, 50=35.51% lat (msec) : 100=23.18%, 250=7.06%, 500=0.20%, 2000=0.03% cpu : usr=0.07%, sys=5.47%, ctx=6102, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144570: Mon Aug 17 07:17:07 2026 read: IOPS=12, BW=48.0KiB/s (49.2kB/s)(6028KiB/125451msec) clat (usec): min=31, max=1166.1k, avg=39418.77, stdev=42542.22 lat (usec): min=31, max=1166.1k, avg=39423.91, stdev=42543.97 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 55], 10.00th=[ 60], | 20.00th=[ 14877], 30.00th=[ 21890], 40.00th=[ 27395], | 50.00th=[ 32900], 60.00th=[ 40109], 70.00th=[ 50070], | 80.00th=[ 61080], 90.00th=[ 77071], 95.00th=[ 93848], | 99.00th=[ 143655], 99.50th=[ 154141], 99.90th=[ 329253], | 99.95th=[1166017], 99.99th=[1166017] bw ( KiB/s): min= 7, max= 119, per=25.51%, avg=48.22, stdev=20.81, samples=244 iops : min= 1, max= 29, avg=11.43, stdev= 5.26, samples=244 write: IOPS=12, BW=49.9KiB/s (51.1kB/s)(6260KiB/125451msec); 0 zone resets clat (usec): min=772, max=454811, avg=41880.89, stdev=43944.19 lat (usec): min=772, max=454812, avg=41882.66, stdev=43944.13 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1336], 10.00th=[ 1467], 20.00th=[ 4293], | 30.00th=[ 9110], 40.00th=[ 20317], 50.00th=[ 31589], 60.00th=[ 42730], | 70.00th=[ 54264], 80.00th=[ 71828], 90.00th=[ 99091], 95.00th=[124257], | 99.00th=[179307], 99.50th=[229639], 99.90th=[354419], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 8, max= 127, per=25.25%, avg=49.99, stdev=20.99, samples=244 iops : min= 2, max= 31, avg=11.88, stdev= 5.28, samples=244 lat (usec) : 50=1.30%, 100=5.86%, 250=0.33%, 500=0.03%, 1000=0.16% lat (msec) : 2=7.23%, 4=2.67%, 10=6.25%, 20=9.73%, 50=34.57% lat (msec) : 100=25.20%, 250=6.41%, 500=0.23%, 2000=0.03% cpu : usr=0.08%, sys=5.39%, ctx=6214, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144571: Mon Aug 17 07:17:07 2026 read: IOPS=11, BW=47.0KiB/s (49.1kB/s)(6052KiB/126092msec) clat (usec): min=20, max=500639, avg=38999.85, stdev=33009.59 lat (usec): min=20, max=500640, avg=39009.70, stdev=33005.70 clat percentiles (usec): | 1.00th=[ 36], 5.00th=[ 54], 10.00th=[ 63], 20.00th=[ 15664], | 30.00th=[ 22414], 40.00th=[ 27395], 50.00th=[ 33162], 60.00th=[ 39584], | 70.00th=[ 48497], 80.00th=[ 60031], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[139461], 99.50th=[156238], 99.90th=[287310], 99.95th=[501220], | 99.99th=[501220] bw ( KiB/s): min= 7, max= 118, per=25.41%, avg=48.03, stdev=20.03, samples=245 iops : min= 1, max= 29, avg=11.39, stdev= 5.06, samples=245 write: IOPS=12, BW=49.5KiB/s (50.6kB/s)(6236KiB/126092msec); 0 zone resets clat (usec): min=807, max=1147.7k, avg=42693.70, stdev=52006.13 lat (usec): min=808, max=1147.7k, avg=42698.60, stdev=52003.88 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1352], 10.00th=[ 1549], | 20.00th=[ 4293], 30.00th=[ 9241], 40.00th=[ 19792], | 50.00th=[ 32113], 60.00th=[ 42730], 70.00th=[ 54264], | 80.00th=[ 71828], 90.00th=[ 95945], 95.00th=[ 123208], | 99.00th=[ 198181], 99.50th=[ 240124], 99.90th=[ 379585], | 99.95th=[1149240], 99.99th=[1149240] bw ( KiB/s): min= 15, max= 141, per=24.98%, avg=49.45, stdev=21.50, samples=245 iops : min= 3, max= 35, avg=11.73, stdev= 5.42, samples=245 lat (usec) : 50=1.79%, 100=5.11%, 250=0.39%, 500=0.10%, 1000=0.07% lat (msec) : 2=6.32%, 4=3.48%, 10=6.28%, 20=9.60%, 50=35.42% lat (msec) : 100=24.67%, 250=6.51%, 500=0.20%, 750=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.53%, ctx=6268, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=190KiB/s (195kB/s), 47.4KiB/s-48.0KiB/s (48.5kB/s-49.2kB/s), io=23.4MiB (24.6MB), run=124380-126417msec WRITE: bw=199KiB/s (204kB/s), 49.5KiB/s-51.0KiB/s (50.6kB/s-52.3kB/s), io=24.6MiB (25.7MB), run=124380-126417msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144564: Mon Aug 17 07:19:23 2026 read: IOPS=5, BW=22.9KiB/s (23.4kB/s)(5992KiB/261933msec) clat (msec): min=5, max=1275, avg=33.95, stdev=46.59 lat (msec): min=5, max=1275, avg=33.95, stdev=46.59 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 49], 90.00th=[ 77], 95.00th=[ 100], | 99.00th=[ 163], 99.50th=[ 197], 99.90th=[ 338], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7, max= 109, per=28.42%, avg=25.86, stdev=18.13, samples=448 iops : min= 1, max= 27, avg= 5.83, stdev= 4.56, samples=448 write: IOPS=6, BW=24.0KiB/s (24.6kB/s)(6296KiB/261933msec); 0 zone resets clat (msec): min=35, max=617, avg=133.73, stdev=69.16 lat (msec): min=35, max=617, avg=133.73, stdev=69.16 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 67], 20.00th=[ 81], | 30.00th=[ 91], 40.00th=[ 103], 50.00th=[ 114], 60.00th=[ 129], | 70.00th=[ 150], 80.00th=[ 182], 90.00th=[ 228], 95.00th=[ 275], | 99.00th=[ 372], 99.50th=[ 418], 99.90th=[ 489], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 7, max= 55, per=25.14%, avg=23.88, stdev=11.46, samples=508 iops : min= 1, max= 13, avg= 5.33, stdev= 2.92, samples=508 lat (msec) : 10=4.79%, 20=18.23%, 50=17.15%, 100=25.68%, 250=30.47% lat (msec) : 500=3.61%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.35%, ctx=5164, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144565: Mon Aug 17 07:19:23 2026 read: IOPS=5, BW=22.7KiB/s (23.2kB/s)(5940KiB/262100msec) clat (msec): min=5, max=1148, avg=34.08, stdev=45.74 lat (msec): min=5, max=1148, avg=34.08, stdev=45.74 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 46], 90.00th=[ 75], 95.00th=[ 100], | 99.00th=[ 178], 99.50th=[ 222], 99.90th=[ 405], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 88, per=29.11%, avg=26.49, stdev=17.44, samples=434 iops : min= 1, max= 22, avg= 5.99, stdev= 4.42, samples=434 write: IOPS=6, BW=24.2KiB/s (24.8kB/s)(6348KiB/262100msec); 0 zone resets clat (msec): min=35, max=605, avg=132.94, stdev=67.76 lat (msec): min=35, max=605, avg=132.94, stdev=67.76 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 60], 10.00th=[ 68], 20.00th=[ 80], | 30.00th=[ 91], 40.00th=[ 103], 50.00th=[ 115], 60.00th=[ 130], | 70.00th=[ 150], 80.00th=[ 180], 90.00th=[ 228], 95.00th=[ 266], | 99.00th=[ 368], 99.50th=[ 414], 99.90th=[ 489], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 7, max= 63, per=25.22%, avg=23.96, stdev=11.66, samples=511 iops : min= 1, max= 15, avg= 5.35, stdev= 2.97, samples=511 lat (msec) : 10=4.17%, 20=18.91%, 50=17.64%, 100=25.23%, 250=30.08% lat (msec) : 500=3.91%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.31%, ctx=5224, 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=144566: Mon Aug 17 07:19:23 2026 read: IOPS=5, BW=22.0KiB/s (23.5kB/s)(6028KiB/262574msec) clat (msec): min=4, max=423, avg=34.20, stdev=36.99 lat (msec): min=4, max=423, avg=34.21, stdev=36.99 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 50], 90.00th=[ 79], 95.00th=[ 101], | 99.00th=[ 167], 99.50th=[ 205], 99.90th=[ 401], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 95, per=27.55%, avg=25.07, stdev=17.38, samples=463 iops : min= 1, max= 23, avg= 5.63, stdev= 4.41, samples=463 write: IOPS=5, BW=23.8KiB/s (24.4kB/s)(6260KiB/262574msec); 0 zone resets clat (msec): min=35, max=1294, avg=134.49, stdev=74.76 lat (msec): min=35, max=1294, avg=134.49, stdev=74.76 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 82], | 30.00th=[ 92], 40.00th=[ 103], 50.00th=[ 114], 60.00th=[ 132], | 70.00th=[ 153], 80.00th=[ 180], 90.00th=[ 224], 95.00th=[ 275], | 99.00th=[ 393], 99.50th=[ 418], 99.90th=[ 567], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 63, per=25.12%, avg=23.86, stdev=11.58, samples=504 iops : min= 1, max= 15, avg= 5.33, stdev= 2.95, samples=504 lat (msec) : 10=5.47%, 20=16.93%, 50=18.03%, 100=25.42%, 250=30.53% lat (msec) : 500=3.52%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.29%, ctx=5144, 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=144567: Mon Aug 17 07:19:23 2026 read: IOPS=5, BW=23.1KiB/s (23.6kB/s)(6052KiB/262269msec) clat (msec): min=5, max=422, avg=33.10, stdev=35.07 lat (msec): min=5, max=422, avg=33.11, stdev=35.07 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 44], 90.00th=[ 75], 95.00th=[ 106], | 99.00th=[ 167], 99.50th=[ 192], 99.90th=[ 338], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 111, per=28.85%, avg=26.26, stdev=18.06, samples=445 iops : min= 1, max= 27, avg= 5.93, stdev= 4.56, samples=445 write: IOPS=5, BW=23.8KiB/s (24.3kB/s)(6236KiB/262269msec); 0 zone resets clat (msec): min=31, max=1194, avg=135.76, stdev=75.86 lat (msec): min=31, max=1194, avg=135.76, stdev=75.86 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 81], | 30.00th=[ 91], 40.00th=[ 103], 50.00th=[ 115], 60.00th=[ 130], | 70.00th=[ 150], 80.00th=[ 182], 90.00th=[ 234], 95.00th=[ 288], | 99.00th=[ 384], 99.50th=[ 426], 99.90th=[ 489], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 56, per=24.93%, avg=23.69, stdev=11.55, samples=506 iops : min= 1, max= 14, avg= 5.28, stdev= 2.95, samples=506 lat (msec) : 10=4.52%, 20=19.30%, 50=17.87%, 100=24.15%, 250=30.11% lat (msec) : 500=4.00%, 2000=0.03% cpu : usr=0.04%, sys=1.34%, ctx=5220, 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=91.4KiB/s (93.6kB/s), 22.7KiB/s-23.1KiB/s (23.2kB/s-23.6kB/s), io=23.4MiB (24.6MB), run=261933-262574msec WRITE: bw=95.7KiB/s (98.0kB/s), 23.8KiB/s-24.2KiB/s (24.3kB/s-24.8kB/s), io=24.6MiB (25.7MB), run=261933-262574msec 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=144630: Mon Aug 17 07:20:05 2026 read: IOPS=12, BW=201KiB/s (206kB/s)(5920KiB/29391msec) clat (usec): min=36, max=291917, avg=40081.16, stdev=34921.79 lat (usec): min=36, max=291919, avg=40082.77, stdev=34921.80 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 52], 10.00th=[ 65], 20.00th=[ 97], | 30.00th=[ 22152], 40.00th=[ 31327], 50.00th=[ 36439], 60.00th=[ 43254], | 70.00th=[ 51643], 80.00th=[ 62653], 90.00th=[ 78119], 95.00th=[ 96994], | 99.00th=[158335], 99.50th=[198181], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 31, max= 504, per=25.52%, avg=201.12, stdev=94.29, samples=57 iops : min= 1, max= 31, avg=11.88, stdev= 5.96, samples=57 write: IOPS=13, BW=217KiB/s (222kB/s)(6368KiB/29391msec); 0 zone resets clat (usec): min=1046, max=346233, avg=35752.49, stdev=40716.14 lat (usec): min=1046, max=346235, avg=35755.12, stdev=40716.20 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1958], 10.00th=[ 3195], 20.00th=[ 5932], | 30.00th=[ 8586], 40.00th=[ 13829], 50.00th=[ 21103], 60.00th=[ 30802], | 70.00th=[ 43254], 80.00th=[ 58459], 90.00th=[ 92799], 95.00th=[112722], | 99.00th=[185598], 99.50th=[198181], 99.90th=[346031], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 22, max= 536, per=26.29%, avg=217.91, stdev=99.29, samples=57 iops : min= 1, max= 33, avg=12.95, stdev= 6.25, samples=57 lat (usec) : 50=2.08%, 100=7.68%, 250=0.65% lat (msec) : 2=2.99%, 4=4.30%, 10=10.29%, 20=10.16%, 50=32.94% lat (msec) : 100=22.92%, 250=5.73%, 500=0.26% cpu : usr=0.05%, sys=6.33%, ctx=1483, 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=144632: Mon Aug 17 07:20:05 2026 read: IOPS=11, BW=189KiB/s (194kB/s)(5744KiB/30387msec) clat (usec): min=40, max=165989, avg=40229.80, stdev=31051.82 lat (usec): min=40, max=165990, avg=40231.46, stdev=31051.82 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 64], 10.00th=[ 72], 20.00th=[ 2737], | 30.00th=[ 23987], 40.00th=[ 30802], 50.00th=[ 35914], 60.00th=[ 45351], | 70.00th=[ 55313], 80.00th=[ 64226], 90.00th=[ 79168], 95.00th=[101188], | 99.00th=[132645], 99.50th=[137364], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 22, max= 403, per=24.27%, avg=191.24, stdev=85.35, samples=58 iops : min= 1, max= 25, avg=11.26, stdev= 5.39, samples=58 write: IOPS=13, BW=215KiB/s (221kB/s)(6544KiB/30387msec); 0 zone resets clat (usec): min=1263, max=431410, avg=38297.99, stdev=45931.82 lat (usec): min=1265, max=431412, avg=38302.96, stdev=45929.99 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1893], 10.00th=[ 2933], 20.00th=[ 5145], | 30.00th=[ 8979], 40.00th=[ 14746], 50.00th=[ 22938], 60.00th=[ 33817], | 70.00th=[ 45351], 80.00th=[ 62129], 90.00th=[ 93848], 95.00th=[126354], | 99.00th=[191890], 99.50th=[270533], 99.90th=[429917], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 62, max= 475, per=25.56%, avg=211.92, stdev=97.14, samples=59 iops : min= 3, max= 29, avg=12.56, stdev= 6.12, samples=59 lat (usec) : 50=0.39%, 100=7.03%, 250=1.30%, 500=0.26%, 1000=0.13% lat (msec) : 2=3.52%, 4=4.04%, 10=9.90%, 20=10.55%, 50=32.29% lat (msec) : 100=23.31%, 250=6.90%, 500=0.39% cpu : usr=0.08%, sys=6.17%, ctx=1530, 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=144633: Mon Aug 17 07:20:05 2026 read: IOPS=13, BW=220KiB/s (225kB/s)(6256KiB/28409msec) clat (usec): min=36, max=213911, avg=38442.66, stdev=29435.96 lat (usec): min=36, max=213913, avg=38444.15, stdev=29436.01 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 1172], | 30.00th=[ 23987], 40.00th=[ 30540], 50.00th=[ 36963], 60.00th=[ 43254], | 70.00th=[ 51119], 80.00th=[ 60556], 90.00th=[ 73925], 95.00th=[ 88605], | 99.00th=[129500], 99.50th=[135267], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 61, max= 399, per=27.92%, avg=220.00, stdev=86.84, samples=55 iops : min= 3, max= 24, avg=13.07, stdev= 5.48, samples=55 write: IOPS=13, BW=212KiB/s (217kB/s)(6032KiB/28409msec); 0 zone resets clat (usec): min=1616, max=388882, avg=34663.50, stdev=38093.56 lat (usec): min=1618, max=388885, avg=34666.95, stdev=38093.99 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2040], 10.00th=[ 2671], 20.00th=[ 5669], | 30.00th=[ 9634], 40.00th=[ 15008], 50.00th=[ 22414], 60.00th=[ 32375], | 70.00th=[ 44303], 80.00th=[ 62129], 90.00th=[ 82314], 95.00th=[ 95945], | 99.00th=[162530], 99.50th=[196084], 99.90th=[387974], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 63, max= 415, per=25.22%, avg=209.07, stdev=85.73, samples=55 iops : min= 3, max= 25, avg=12.38, stdev= 5.44, samples=55 lat (usec) : 50=1.69%, 100=6.77%, 250=1.04%, 500=0.39%, 750=0.26% lat (msec) : 2=1.95%, 4=5.34%, 10=8.98%, 20=9.24%, 50=35.68% lat (msec) : 100=25.00%, 250=3.52%, 500=0.13% cpu : usr=0.07%, sys=6.17%, ctx=1527, 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=144636: Mon Aug 17 07:20:05 2026 read: IOPS=12, BW=205KiB/s (209kB/s)(6032KiB/29491msec) clat (usec): min=22, max=380954, avg=40245.65, stdev=36434.42 lat (usec): min=22, max=380957, avg=40247.16, stdev=36434.40 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 57], 10.00th=[ 66], 20.00th=[ 90], | 30.00th=[ 21890], 40.00th=[ 32113], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 53740], 80.00th=[ 64226], 90.00th=[ 77071], 95.00th=[ 90702], | 99.00th=[145753], 99.50th=[212861], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 31, max= 512, per=25.65%, avg=202.11, stdev=90.12, samples=57 iops : min= 1, max= 32, avg=11.95, stdev= 5.68, samples=57 write: IOPS=13, BW=212KiB/s (217kB/s)(6256KiB/29491msec); 0 zone resets clat (usec): min=1281, max=381596, avg=36191.02, stdev=42638.80 lat (usec): min=1282, max=381600, avg=36205.43, stdev=42641.12 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2008], 10.00th=[ 2507], 20.00th=[ 5080], | 30.00th=[ 8160], 40.00th=[ 11469], 50.00th=[ 18744], 60.00th=[ 31065], | 70.00th=[ 44303], 80.00th=[ 64750], 90.00th=[ 93848], 95.00th=[115868], | 99.00th=[191890], 99.50th=[225444], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 31, max= 409, per=25.42%, avg=210.77, stdev=78.38, samples=57 iops : min= 1, max= 25, avg=12.49, stdev= 5.00, samples=57 lat (usec) : 50=1.30%, 100=8.85%, 250=1.30%, 500=0.26%, 750=0.13% lat (msec) : 2=2.47%, 4=5.47%, 10=10.16%, 20=9.64%, 50=29.82% lat (msec) : 100=25.13%, 250=5.21%, 500=0.26% cpu : usr=0.07%, sys=5.96%, ctx=1500, 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=788KiB/s (807kB/s), 189KiB/s-220KiB/s (194kB/s-225kB/s), io=23.4MiB (24.5MB), run=28409-30387msec WRITE: bw=829KiB/s (849kB/s), 212KiB/s-217KiB/s (217kB/s-222kB/s), io=24.6MiB (25.8MB), run=28409-30387msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144629: Mon Aug 17 07:20:38 2026 read: IOPS=5, BW=93.6KiB/s (95.9kB/s)(5920KiB/63231msec) clat (msec): min=6, max=469, avg=39.73, stdev=42.82 lat (msec): min=6, max=470, avg=39.73, stdev=42.82 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 53], 90.00th=[ 74], 95.00th=[ 116], | 99.00th=[ 199], 99.50th=[ 226], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 30, max= 379, per=26.86%, avg=101.53, stdev=67.31, samples=112 iops : min= 1, max= 23, avg= 5.60, stdev= 4.24, samples=112 write: IOPS=6, BW=101KiB/s (103kB/s)(6368KiB/63231msec); 0 zone resets clat (msec): min=35, max=455, avg=121.09, stdev=66.56 lat (msec): min=35, max=455, avg=121.10, stdev=66.57 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 52], 10.00th=[ 59], 20.00th=[ 68], | 30.00th=[ 80], 40.00th=[ 90], 50.00th=[ 102], 60.00th=[ 116], | 70.00th=[ 136], 80.00th=[ 165], 90.00th=[ 209], 95.00th=[ 247], | 99.00th=[ 351], 99.50th=[ 409], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 21, max= 224, per=25.53%, avg=101.62, stdev=52.15, samples=122 iops : min= 1, max= 14, avg= 5.60, stdev= 3.35, samples=122 lat (msec) : 10=2.60%, 20=13.28%, 50=23.96%, 100=29.95%, 250=27.86% lat (msec) : 500=2.34% cpu : usr=0.04%, sys=1.67%, ctx=1442, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144631: Mon Aug 17 07:20:38 2026 read: IOPS=5, BW=91.2KiB/s (93.4kB/s)(5744KiB/62968msec) clat (msec): min=6, max=243, avg=38.08, stdev=36.96 lat (msec): min=6, max=243, avg=38.08, stdev=36.96 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 52], 90.00th=[ 84], 95.00th=[ 121], | 99.00th=[ 194], 99.50th=[ 222], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 21, max= 448, per=27.23%, avg=102.92, stdev=74.20, samples=110 iops : min= 1, max= 28, avg= 5.66, stdev= 4.71, samples=110 write: IOPS=6, BW=104KiB/s (106kB/s)(6544KiB/62968msec); 0 zone resets clat (msec): min=31, max=457, avg=119.88, stdev=60.99 lat (msec): min=31, max=457, avg=119.89, stdev=60.99 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 73], | 30.00th=[ 81], 40.00th=[ 90], 50.00th=[ 106], 60.00th=[ 118], | 70.00th=[ 136], 80.00th=[ 159], 90.00th=[ 209], 95.00th=[ 249], | 99.00th=[ 313], 99.50th=[ 338], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 31, max= 253, per=26.25%, avg=104.48, stdev=49.89, samples=123 iops : min= 1, max= 15, avg= 5.78, stdev= 3.22, samples=123 lat (msec) : 10=3.39%, 20=15.23%, 50=19.66%, 100=31.12%, 250=27.99% lat (msec) : 500=2.60% cpu : usr=0.04%, sys=1.68%, ctx=1415, 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=144634: Mon Aug 17 07:20:38 2026 read: IOPS=6, BW=102KiB/s (104kB/s)(6256KiB/61455msec) clat (msec): min=7, max=470, avg=39.97, stdev=41.28 lat (msec): min=7, max=470, avg=39.97, stdev=41.28 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 55], 90.00th=[ 79], 95.00th=[ 108], | 99.00th=[ 205], 99.50th=[ 239], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 31, max= 319, per=29.18%, avg=110.30, stdev=71.55, samples=112 iops : min= 1, max= 19, avg= 6.13, stdev= 4.55, samples=112 write: IOPS=6, BW=98.2KiB/s (101kB/s)(6032KiB/61455msec); 0 zone resets clat (msec): min=37, max=403, avg=120.93, stdev=59.30 lat (msec): min=37, max=403, avg=120.93, stdev=59.30 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 54], 10.00th=[ 62], 20.00th=[ 73], | 30.00th=[ 82], 40.00th=[ 93], 50.00th=[ 106], 60.00th=[ 121], | 70.00th=[ 140], 80.00th=[ 163], 90.00th=[ 207], 95.00th=[ 253], | 99.00th=[ 292], 99.50th=[ 330], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 30, max= 224, per=24.72%, avg=98.37, stdev=46.16, samples=120 iops : min= 1, max= 14, avg= 5.39, stdev= 2.98, samples=120 lat (msec) : 10=2.60%, 20=13.93%, 50=24.48%, 100=29.82%, 250=26.43% lat (msec) : 500=2.73% cpu : usr=0.04%, sys=1.69%, ctx=1428, 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=144635: Mon Aug 17 07:20:38 2026 read: IOPS=6, BW=98.2KiB/s (101kB/s)(6032KiB/61414msec) clat (msec): min=6, max=197, avg=37.07, stdev=32.39 lat (msec): min=6, max=197, avg=37.08, stdev=32.40 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 54], 90.00th=[ 74], 95.00th=[ 104], | 99.00th=[ 176], 99.50th=[ 182], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 31, max= 319, per=28.56%, avg=107.95, stdev=66.53, samples=109 iops : min= 1, max= 19, avg= 6.01, stdev= 4.21, samples=109 write: IOPS=6, BW=102KiB/s (104kB/s)(6256KiB/61414msec); 0 zone resets clat (msec): min=39, max=521, avg=121.13, stdev=65.52 lat (msec): min=39, max=521, avg=121.13, stdev=65.52 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 72], | 30.00th=[ 84], 40.00th=[ 93], 50.00th=[ 104], 60.00th=[ 114], | 70.00th=[ 133], 80.00th=[ 159], 90.00th=[ 218], 95.00th=[ 253], | 99.00th=[ 351], 99.50th=[ 401], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 30, max= 223, per=25.76%, avg=102.53, stdev=48.21, samples=120 iops : min= 1, max= 13, avg= 5.65, stdev= 3.08, samples=120 lat (msec) : 10=1.95%, 20=14.84%, 50=22.53%, 100=31.51%, 250=26.43% lat (msec) : 500=2.60%, 750=0.13% cpu : usr=0.04%, sys=1.62%, ctx=1411, 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=379KiB/s (388kB/s), 91.2KiB/s-102KiB/s (93.4kB/s-104kB/s), io=23.4MiB (24.5MB), run=61414-63231msec WRITE: bw=399KiB/s (408kB/s), 98.2KiB/s-104KiB/s (101kB/s-106kB/s), io=24.6MiB (25.8MB), run=61414-63231msec 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=144651: Mon Aug 17 07:20:54 2026 read: IOPS=0, BW=992KiB/s (1016kB/s)(7168KiB/7225msec) clat (msec): min=2, max=4765, avg=819.45, stdev=1741.79 lat (msec): min=2, max=4765, avg=819.45, stdev=1741.79 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 153], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 199], 60.00th=[ 213], | 70.00th=[ 213], 80.00th=[ 236], 90.00th=[ 4799], 95.00th=[ 4799], | 99.00th=[ 4799], 99.50th=[ 4799], 99.90th=[ 4799], 99.95th=[ 4799], | 99.99th=[ 4799] bw ( KiB/s): min= 1996, max= 6144, per=100.00%, avg=3662.67, stdev=2190.72, samples=3 iops : min= 1, max= 6, avg= 3.00, stdev= 2.65, samples=3 write: IOPS=0, BW=709KiB/s (726kB/s)(5120KiB/7225msec); 0 zone resets clat (msec): min=140, max=413, avg=270.42, stdev=99.73 lat (msec): min=140, max=413, avg=270.65, stdev=99.68 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 140], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 262], 60.00th=[ 262], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 1996, max= 4055, per=68.04%, avg=2699.67, stdev=1174.04, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 4=8.33%, 250=58.33%, 500=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=7.27%, ctx=518, 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=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=144652: Mon Aug 17 07:20:54 2026 read: IOPS=0, BW=304KiB/s (311kB/s)(2048KiB/6744msec) clat (usec): min=1788, max=144953, avg=73371.10, stdev=101233.22 lat (usec): min=1789, max=144956, avg=73372.92, stdev=101234.09 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 1795], 10.00th=[ 1795], 20.00th=[ 1795], | 30.00th=[ 1795], 40.00th=[ 1795], 50.00th=[ 1795], 60.00th=[145753], | 70.00th=[145753], 80.00th=[145753], 90.00th=[145753], 95.00th=[145753], | 99.00th=[145753], 99.50th=[145753], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 1378, max= 2011, per=59.79%, avg=1694.50, stdev=447.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1518KiB/s (1555kB/s)(10.0MiB/6744msec); 0 zone resets clat (msec): min=139, max=2983, avg=654.78, stdev=845.16 lat (msec): min=139, max=2983, avg=654.99, stdev=845.20 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 186], | 30.00th=[ 232], 40.00th=[ 275], 50.00th=[ 330], 60.00th=[ 493], | 70.00th=[ 498], 80.00th=[ 584], 90.00th=[ 835], 95.00th=[ 2970], | 99.00th=[ 2970], 99.50th=[ 2970], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] bw ( KiB/s): min= 2015, max= 4071, per=76.50%, avg=3035.67, stdev=1105.07, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 2=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=7.46%, ctx=113, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144653: Mon Aug 17 07:20:54 2026 read: IOPS=0, BW=891KiB/s (912kB/s)(6144KiB/6897msec) clat (usec): min=444, max=493824, avg=188020.75, stdev=205437.60 lat (usec): min=446, max=493825, avg=188022.11, stdev=205437.64 clat percentiles (usec): | 1.00th=[ 445], 5.00th=[ 445], 10.00th=[ 445], 20.00th=[ 644], | 30.00th=[ 644], 40.00th=[119014], 50.00th=[119014], 60.00th=[128451], | 70.00th=[383779], 80.00th=[383779], 90.00th=[492831], 95.00th=[492831], | 99.00th=[492831], 99.50th=[492831], 99.90th=[492831], 99.95th=[492831], | 99.99th=[492831] bw ( KiB/s): min= 2027, max= 8159, per=100.00%, avg=5093.00, stdev=4335.98, samples=2 iops : min= 1, max= 7, avg= 4.00, stdev= 4.24, samples=2 write: IOPS=0, BW=891KiB/s (912kB/s)(6144KiB/6897msec); 0 zone resets clat (msec): min=168, max=3661, avg=938.67, stdev=1350.16 lat (msec): min=168, max=3661, avg=939.07, stdev=1349.96 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 531], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 3675], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 1996, max= 2820, per=55.03%, avg=2183.40, stdev=356.27, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=33.33%, 500=25.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=4.73%, ctx=157, 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=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=144654: Mon Aug 17 07:20:54 2026 read: IOPS=0, BW=757KiB/s (775kB/s)(5120KiB/6766msec) clat (msec): min=2, max=524, avg=187.45, stdev=213.64 lat (msec): min=2, max=524, avg=187.45, stdev=213.64 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 3], | 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 197], 60.00th=[ 197], | 70.00th=[ 211], 80.00th=[ 211], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1059KiB/s (1085kB/s)(7168KiB/6767msec); 0 zone resets clat (msec): min=202, max=3873, avg=802.37, stdev=1361.40 lat (msec): min=203, max=3873, avg=802.47, stdev=1361.37 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 215], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 243], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 600], 90.00th=[ 3876], 95.00th=[ 3876], | 99.00th=[ 3876], 99.50th=[ 3876], 99.90th=[ 3876], 99.95th=[ 3876], | 99.99th=[ 3876] bw ( KiB/s): min= 1432, max= 4071, per=60.14%, avg=2386.25, stdev=1156.99, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 4=16.67%, 250=50.00%, 500=8.33%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=5.91%, ctx=163, 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=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=2835KiB/s (2903kB/s), 304KiB/s-992KiB/s (311kB/s-1016kB/s), io=20.0MiB (20.0MB), run=6744-7225msec WRITE: bw=3968KiB/s (4064kB/s), 709KiB/s-1518KiB/s (726kB/s-1555kB/s), io=28.0MiB (29.4MB), run=6744-7225msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144656: Mon Aug 17 07:20:54 2026 read: IOPS=1, BW=1048KiB/s (1073kB/s)(7168KiB/6838msec) clat (msec): min=87, max=3605, avg=731.71, stdev=1301.78 lat (msec): min=87, max=3605, avg=731.71, stdev=1301.78 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 93], | 30.00th=[ 112], 40.00th=[ 112], 50.00th=[ 150], 60.00th=[ 159], | 70.00th=[ 159], 80.00th=[ 919], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 1499, max= 6144, per=97.80%, avg=2929.25, stdev=2158.13, samples=4 iops : min= 1, max= 6, avg= 2.25, stdev= 2.50, samples=4 write: IOPS=0, BW=749KiB/s (767kB/s)(5120KiB/6838msec); 0 zone resets clat (msec): min=224, max=562, avg=326.69, stdev=144.83 lat (msec): min=224, max=562, avg=326.77, stdev=144.82 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 2027, max= 2048, per=48.62%, avg=2038.50, stdev=11.09, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (msec) : 100=16.67%, 250=50.00%, 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.01%, sys=2.62%, ctx=93, 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=144657: Mon Aug 17 07:20:54 2026 read: IOPS=0, BW=306KiB/s (313kB/s)(2048KiB/6703msec) clat (msec): min=155, max=173, avg=164.39, stdev=12.79 lat (msec): min=155, max=173, avg=164.40, stdev=12.79 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 157], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 174], 90.00th=[ 174], 95.00th=[ 174], | 99.00th=[ 174], 99.50th=[ 174], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 1560, max= 1988, per=59.23%, avg=1774.00, stdev=302.64, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1528KiB/s (1564kB/s)(10.0MiB/6703msec); 0 zone resets clat (msec): min=187, max=3254, avg=629.25, stdev=949.65 lat (msec): min=187, max=3254, avg=629.57, stdev=949.55 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 197], | 30.00th=[ 247], 40.00th=[ 259], 50.00th=[ 266], 60.00th=[ 296], | 70.00th=[ 309], 80.00th=[ 313], 90.00th=[ 969], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 1988, max= 6095, per=96.45%, avg=4044.25, stdev=1676.79, samples=4 iops : min= 1, max= 5, avg= 3.00, stdev= 1.63, samples=4 lat (msec) : 250=41.67%, 500=41.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=2.78%, ctx=79, 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=144658: Mon Aug 17 07:20:54 2026 read: IOPS=0, BW=920KiB/s (942kB/s)(6144KiB/6676msec) clat (msec): min=98, max=299, avg=154.34, stdev=77.29 lat (msec): min=98, max=299, avg=154.34, stdev=77.29 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 105], | 30.00th=[ 105], 40.00th=[ 114], 50.00th=[ 114], 60.00th=[ 130], | 70.00th=[ 182], 80.00th=[ 182], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 3976, max= 4023, per=100.00%, avg=3999.50, stdev=33.23, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=920KiB/s (942kB/s)(6144KiB/6676msec); 0 zone resets clat (msec): min=252, max=3443, avg=940.25, stdev=1232.70 lat (msec): min=252, max=3447, avg=941.30, stdev=1234.42 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 253], 10.00th=[ 253], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 558], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 3440], 95.00th=[ 3440], | 99.00th=[ 3440], 99.50th=[ 3440], 99.90th=[ 3440], 99.95th=[ 3440], | 99.99th=[ 3440] bw ( KiB/s): min= 1503, max= 2043, per=45.77%, avg=1919.20, stdev=233.62, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.17%, ctx=73, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144659: Mon Aug 17 07:20:54 2026 read: IOPS=0, BW=752KiB/s (770kB/s)(5120KiB/6812msec) clat (msec): min=70, max=138, avg=107.50, stdev=31.63 lat (msec): min=70, max=138, avg=107.50, stdev=31.63 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 70], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 114], 60.00th=[ 114], | 70.00th=[ 136], 80.00th=[ 136], 90.00th=[ 140], 95.00th=[ 140], | 99.00th=[ 140], 99.50th=[ 140], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 7953, max= 7953, per=100.00%, avg=7953.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1052KiB/s (1078kB/s)(7168KiB/6812msec); 0 zone resets clat (msec): min=168, max=3614, avg=887.79, stdev=1231.73 lat (msec): min=168, max=3614, avg=888.02, stdev=1231.67 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 321], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 338], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 1003], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 1551, max= 4063, per=69.59%, avg=2918.00, stdev=1314.08, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.04%, 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=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=2995KiB/s (3067kB/s), 306KiB/s-1048KiB/s (313kB/s-1073kB/s), io=20.0MiB (20.0MB), run=6676-6838msec WRITE: bw=4193KiB/s (4294kB/s), 749KiB/s-1528KiB/s (767kB/s-1564kB/s), io=28.0MiB (29.4MB), run=6676-6838msec 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=144671: Mon Aug 17 07:21:06 2026 read: IOPS=1, BW=6222KiB/s (6371kB/s)(12.0MiB/1975msec) clat (msec): min=556, max=772, avg=657.83, stdev=108.59 lat (msec): min=556, max=772, avg=657.83, stdev=108.59 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 8110, max= 8159, per=100.00%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=15.55%, ctx=250, 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=144672: Mon Aug 17 07:21:06 2026 read: IOPS=0, BW=1730KiB/s (1771kB/s)(4096KiB/2368msec) clat (nsec): min=728553k, max=728553k, avg=728552860.00, stdev= 0.00 lat (nsec): min=728555k, max=728555k, avg=728554590.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] 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=3459KiB/s (3542kB/s)(8192KiB/2368msec); 0 zone resets clat (msec): min=444, max=1192, avg=818.50, stdev=528.50 lat (msec): min=445, max=1192, avg=818.95, stdev=528.52 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 1200], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8159, max= 8159, per=60.63%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.97%, ctx=68, 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=144673: Mon Aug 17 07:21:06 2026 write: IOPS=1, BW=5046KiB/s (5168kB/s)(12.0MiB/2435msec); 0 zone resets clat (msec): min=206, max=1136, avg=810.64, stdev=523.44 lat (msec): min=207, max=1136, avg=811.17, stdev=523.69 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 8110, max= 8143, per=60.39%, avg=8126.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.29%, sys=5.01%, ctx=52, 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=144674: Mon Aug 17 07:21:06 2026 write: IOPS=1, BW=5568KiB/s (5701kB/s)(12.0MiB/2207msec); 0 zone resets clat (msec): min=202, max=1014, avg=734.34, stdev=460.96 lat (msec): min=202, max=1014, avg=734.97, stdev=461.17 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 8110, max= 8110, per=60.27%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.81%, ctx=42, 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=6919KiB/s (7085kB/s), 1730KiB/s-6222KiB/s (1771kB/s-6371kB/s), io=16.0MiB (16.8MB), run=1975-2368msec WRITE: bw=13.1MiB/s (13.8MB/s), 3459KiB/s-5568KiB/s (3542kB/s-5701kB/s), io=32.0MiB (33.6MB), run=2207-2435msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144666: Mon Aug 17 07:21:06 2026 read: IOPS=1, BW=6427KiB/s (6581kB/s)(12.0MiB/1912msec) clat (msec): min=501, max=810, avg=606.76, stdev=176.42 lat (msec): min=501, max=810, avg=606.77, stdev=176.42 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 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= 8000, max= 8159, per=100.00%, avg=8079.50, stdev=112.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.05%, sys=5.97%, 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=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=144667: Mon Aug 17 07:21:06 2026 read: IOPS=0, BW=1976KiB/s (2023kB/s)(4096KiB/2073msec) clat (nsec): min=221385k, max=221385k, avg=221384584.00, stdev= 0.00 lat (nsec): min=221387k, max=221387k, avg=221387247.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 222], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 222], 80.00th=[ 222], 90.00th=[ 222], 95.00th=[ 222], | 99.00th=[ 222], 99.50th=[ 222], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 7831, max= 7831, per=99.09%, avg=7831.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3952KiB/s (4047kB/s)(8192KiB/2073msec); 0 zone resets clat (msec): min=878, max=933, avg=906.15, stdev=39.35 lat (msec): min=878, max=934, avg=906.60, stdev=39.27 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 936], | 70.00th=[ 936], 80.00th=[ 936], 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= 8000, max= 8000, per=80.28%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.10%, sys=8.06%, ctx=50, 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=144668: Mon Aug 17 07:21:06 2026 write: IOPS=0, BW=3737KiB/s (3827kB/s)(12.0MiB/3288msec); 0 zone resets clat (msec): min=200, max=1974, avg=1068.46, stdev=887.68 lat (msec): min=201, max=1978, avg=1070.10, stdev=889.27 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 1028], 50.00th=[ 1028], 60.00th=[ 1028], | 70.00th=[ 1972], 80.00th=[ 1972], 90.00th=[ 1972], 95.00th=[ 1972], | 99.00th=[ 1972], 99.50th=[ 1972], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min= 7984, max= 8159, per=81.00%, avg=8071.50, stdev=123.74, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.03%, sys=3.56%, 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=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=144669: Mon Aug 17 07:21:06 2026 write: IOPS=1, BW=5139KiB/s (5263kB/s)(12.0MiB/2391msec); 0 zone resets clat (msec): min=480, max=1144, avg=748.47, stdev=350.19 lat (msec): min=480, max=1154, avg=751.93, stdev=355.29 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 481], 10.00th=[ 481], 20.00th=[ 481], | 30.00th=[ 481], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8000, max= 8159, per=81.08%, avg=8079.50, stdev=112.43, 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=5.77%, ctx=66, 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=7904KiB/s (8093kB/s), 1976KiB/s-6427KiB/s (2023kB/s-6581kB/s), io=16.0MiB (16.8MB), run=1912-2073msec WRITE: bw=9966KiB/s (10.2MB/s), 3737KiB/s-5139KiB/s (3827kB/s-5263kB/s), io=32.0MiB (33.6MB), run=2073-3288msec