== sanity test 398b: DIO and buffer IO race ============== 04:30:41 (1787387441) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.68049 s, 7.5 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179201: Sat Aug 22 04:33:18 2026 read: IOPS=11, BW=44.9KiB/s (45.0kB/s)(5992KiB/133493msec) clat (usec): min=39, max=1023.6k, avg=49463.66, stdev=39805.71 lat (usec): min=39, max=1023.6k, avg=49469.80, stdev=39810.79 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 12649], 10.00th=[ 19006], | 20.00th=[ 25822], 30.00th=[ 31065], 40.00th=[ 36963], | 50.00th=[ 43254], 60.00th=[ 50070], 70.00th=[ 58459], | 80.00th=[ 68682], 90.00th=[ 84411], 95.00th=[ 103285], | 99.00th=[ 156238], 99.50th=[ 187696], 99.90th=[ 316670], | 99.95th=[1027605], 99.99th=[1027605] bw ( KiB/s): min= 7, max= 95, per=25.20%, avg=44.60, stdev=17.74, samples=262 iops : min= 1, max= 23, avg=10.51, stdev= 4.47, samples=262 write: IOPS=11, BW=47.2KiB/s (48.3kB/s)(6296KiB/133493msec); 0 zone resets clat (usec): min=1066, max=274244, avg=37464.65, stdev=37742.87 lat (usec): min=1067, max=274246, avg=37473.58, stdev=37742.77 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1352], 10.00th=[ 1958], 20.00th=[ 4228], | 30.00th=[ 8717], 40.00th=[ 17957], 50.00th=[ 27657], 60.00th=[ 36439], | 70.00th=[ 47973], 80.00th=[ 65799], 90.00th=[ 90702], 95.00th=[111674], | 99.00th=[156238], 99.50th=[183501], 99.90th=[229639], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 7, max= 132, per=25.44%, avg=47.06, stdev=20.99, samples=261 iops : min= 1, max= 33, avg=11.13, stdev= 5.30, samples=261 lat (usec) : 50=0.23%, 100=1.07%, 250=0.13%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=5.34%, 4=4.46%, 10=7.06%, 20=8.56%, 50=38.90% lat (msec) : 100=27.67%, 250=6.32%, 500=0.07%, 2000=0.03% cpu : usr=0.08%, sys=5.22%, ctx=6659, 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=179202: Sat Aug 22 04:33:18 2026 read: IOPS=10, BW=43.9KiB/s (44.9kB/s)(5940KiB/135340msec) clat (usec): min=42, max=280795, avg=49394.69, stdev=31386.60 lat (usec): min=42, max=280797, avg=49396.68, stdev=31386.86 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 12518], 10.00th=[ 19006], 20.00th=[ 25560], | 30.00th=[ 31327], 40.00th=[ 36963], 50.00th=[ 43254], 60.00th=[ 51119], | 70.00th=[ 58983], 80.00th=[ 68682], 90.00th=[ 87557], 95.00th=[105382], | 99.00th=[147850], 99.50th=[179307], 99.90th=[258999], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 5, max= 88, per=24.88%, avg=44.05, stdev=16.20, samples=263 iops : min= 1, max= 22, avg=10.37, stdev= 4.08, samples=263 write: IOPS=11, BW=46.9KiB/s (48.0kB/s)(6348KiB/135340msec); 0 zone resets clat (usec): min=1014, max=968999, avg=38822.12, stdev=45467.48 lat (usec): min=1015, max=969001, avg=38823.87, stdev=45467.62 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1352], 10.00th=[ 1827], 20.00th=[ 4752], | 30.00th=[ 8356], 40.00th=[ 17957], 50.00th=[ 27657], 60.00th=[ 37487], | 70.00th=[ 49546], 80.00th=[ 65274], 90.00th=[ 91751], 95.00th=[113771], | 99.00th=[177210], 99.50th=[202376], 99.90th=[246416], 99.95th=[968885], | 99.99th=[968885] bw ( KiB/s): min= 7, max= 127, per=25.09%, avg=46.42, stdev=19.86, samples=266 iops : min= 1, max= 31, avg=10.97, stdev= 5.01, samples=266 lat (usec) : 50=0.20%, 100=1.76%, 250=0.10%, 750=0.07%, 1000=0.03% lat (msec) : 2=5.70%, 4=3.52%, 10=7.55%, 20=8.27%, 50=37.76% lat (msec) : 100=28.03%, 250=6.93%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=5.17%, ctx=6608, 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=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=179203: Sat Aug 22 04:33:18 2026 read: IOPS=11, BW=44.9KiB/s (46.0kB/s)(6028KiB/134135msec) clat (usec): min=33, max=386190, avg=48597.31, stdev=32281.08 lat (usec): min=33, max=386191, avg=48608.46, stdev=32281.00 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 10421], 10.00th=[ 18744], 20.00th=[ 25560], | 30.00th=[ 30540], 40.00th=[ 36439], 50.00th=[ 42730], 60.00th=[ 49546], | 70.00th=[ 57410], 80.00th=[ 66847], 90.00th=[ 86508], 95.00th=[106431], | 99.00th=[164627], 99.50th=[183501], 99.90th=[270533], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 7, max= 87, per=25.50%, avg=45.13, stdev=17.76, samples=261 iops : min= 1, max= 21, avg=10.64, stdev= 4.46, samples=261 write: IOPS=11, BW=46.7KiB/s (47.8kB/s)(6260KiB/134135msec); 0 zone resets clat (usec): min=1026, max=1058.6k, avg=38641.46, stdev=46262.52 lat (usec): min=1027, max=1058.6k, avg=38645.24, stdev=46263.34 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1352], 10.00th=[ 1811], | 20.00th=[ 4424], 30.00th=[ 8455], 40.00th=[ 17433], | 50.00th=[ 27657], 60.00th=[ 36963], 70.00th=[ 49546], | 80.00th=[ 66847], 90.00th=[ 93848], 95.00th=[ 115868], | 99.00th=[ 158335], 99.50th=[ 187696], 99.90th=[ 248513], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 7, max= 95, per=25.42%, avg=47.02, stdev=19.30, samples=260 iops : min= 1, max= 23, avg=11.12, stdev= 4.87, samples=260 lat (usec) : 50=0.33%, 100=1.73%, 250=0.10%, 500=0.03% lat (msec) : 2=5.57%, 4=3.94%, 10=7.36%, 20=8.04%, 50=38.31% lat (msec) : 100=27.60%, 250=6.90%, 500=0.07%, 2000=0.03% cpu : usr=0.07%, sys=5.16%, ctx=6549, 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=179204: Sat Aug 22 04:33:18 2026 read: IOPS=11, BW=44.7KiB/s (45.8kB/s)(6052KiB/135358msec) clat (usec): min=29, max=226436, avg=49217.21, stdev=32519.47 lat (usec): min=29, max=226438, avg=49223.90, stdev=32517.18 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 9241], 10.00th=[ 17957], 20.00th=[ 25035], | 30.00th=[ 29754], 40.00th=[ 35914], 50.00th=[ 42730], 60.00th=[ 49021], | 70.00th=[ 59507], 80.00th=[ 70779], 90.00th=[ 88605], 95.00th=[109577], | 99.00th=[170918], 99.50th=[187696], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 7, max= 87, per=25.37%, avg=44.90, stdev=17.09, samples=262 iops : min= 1, max= 21, avg=10.59, stdev= 4.30, samples=262 write: IOPS=11, BW=46.1KiB/s (47.2kB/s)(6236KiB/135358msec); 0 zone resets clat (usec): min=1092, max=994030, avg=38790.73, stdev=45109.95 lat (usec): min=1093, max=994032, avg=38795.21, stdev=45113.45 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1352], 10.00th=[ 1876], 20.00th=[ 4424], | 30.00th=[ 8291], 40.00th=[ 18482], 50.00th=[ 28705], 60.00th=[ 38536], | 70.00th=[ 51119], 80.00th=[ 65799], 90.00th=[ 89654], 95.00th=[110625], | 99.00th=[164627], 99.50th=[187696], 99.90th=[295699], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 111, per=24.62%, avg=45.55, stdev=19.52, samples=266 iops : min= 1, max= 27, avg=10.75, stdev= 4.89, samples=266 lat (usec) : 50=0.23%, 100=1.82%, 250=0.23%, 1000=0.03% lat (msec) : 2=5.60%, 4=3.97%, 10=6.71%, 20=8.53%, 50=37.76% lat (msec) : 100=28.16%, 250=6.87%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=5.10%, ctx=6569, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=177KiB/s (182kB/s), 43.9KiB/s-44.9KiB/s (44.9kB/s-46.0kB/s), io=23.4MiB (24.6MB), run=133493-135358msec WRITE: bw=186KiB/s (190kB/s), 46.1KiB/s-47.2KiB/s (47.2kB/s-48.3kB/s), io=24.6MiB (25.7MB), run=133493-135358msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179196: Sat Aug 22 04:34:22 2026 read: IOPS=7, BW=29.9KiB/s (30.7kB/s)(5992KiB/200173msec) clat (msec): min=6, max=1026, avg=52.95, stdev=48.86 lat (msec): min=6, max=1026, avg=52.95, stdev=48.86 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 48], | 70.00th=[ 60], 80.00th=[ 77], 90.00th=[ 107], 95.00th=[ 138], | 99.00th=[ 207], 99.50th=[ 230], 99.90th=[ 401], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 103, per=25.71%, avg=30.60, stdev=18.22, samples=379 iops : min= 1, max= 25, avg= 6.98, stdev= 4.59, samples=379 write: IOPS=7, BW=31.5KiB/s (32.2kB/s)(6296KiB/200173msec); 0 zone resets clat (msec): min=11, max=428, avg=76.52, stdev=47.83 lat (msec): min=11, max=428, avg=76.52, stdev=47.83 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 27], 10.00th=[ 32], 20.00th=[ 39], | 30.00th=[ 47], 40.00th=[ 55], 50.00th=[ 64], 60.00th=[ 77], | 70.00th=[ 90], 80.00th=[ 106], 90.00th=[ 138], 95.00th=[ 171], | 99.00th=[ 234], 99.50th=[ 296], 99.90th=[ 414], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 7, max= 111, per=25.24%, avg=31.55, stdev=16.82, samples=386 iops : min= 1, max= 27, avg= 7.22, stdev= 4.23, samples=386 lat (msec) : 10=0.62%, 20=7.85%, 50=39.58%, 100=34.67%, 250=16.76% lat (msec) : 500=0.49%, 2000=0.03% cpu : usr=0.05%, sys=1.90%, ctx=5080, 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=179197: Sat Aug 22 04:34:22 2026 read: IOPS=7, BW=29.8KiB/s (30.5kB/s)(5940KiB/199467msec) clat (msec): min=4, max=1076, avg=52.05, stdev=50.31 lat (msec): min=4, max=1076, avg=52.05, stdev=50.31 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 55], 80.00th=[ 73], 90.00th=[ 109], 95.00th=[ 144], | 99.00th=[ 205], 99.50th=[ 241], 99.90th=[ 409], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 104, per=26.11%, avg=31.07, stdev=18.94, samples=370 iops : min= 1, max= 26, avg= 7.09, stdev= 4.78, samples=370 write: IOPS=7, BW=31.8KiB/s (32.6kB/s)(6348KiB/199467msec); 0 zone resets clat (msec): min=12, max=419, avg=76.70, stdev=47.96 lat (msec): min=12, max=419, avg=76.70, stdev=47.96 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 32], 20.00th=[ 40], | 30.00th=[ 47], 40.00th=[ 55], 50.00th=[ 63], 60.00th=[ 77], | 70.00th=[ 91], 80.00th=[ 111], 90.00th=[ 140], 95.00th=[ 159], | 99.00th=[ 249], 99.50th=[ 296], 99.90th=[ 376], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7, max= 103, per=25.42%, avg=31.78, stdev=16.74, samples=387 iops : min= 1, max= 25, avg= 7.27, stdev= 4.22, samples=387 lat (msec) : 10=0.88%, 20=7.91%, 50=41.24%, 100=31.48%, 250=17.90% lat (msec) : 500=0.55%, 2000=0.03% cpu : usr=0.05%, sys=1.94%, ctx=5069, 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=179198: Sat Aug 22 04:34:22 2026 read: IOPS=7, BW=30.2KiB/s (30.9kB/s)(6028KiB/199480msec) clat (msec): min=6, max=330, avg=52.50, stdev=40.63 lat (msec): min=6, max=330, avg=52.50, stdev=40.63 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 47], | 70.00th=[ 59], 80.00th=[ 78], 90.00th=[ 110], 95.00th=[ 138], | 99.00th=[ 203], 99.50th=[ 226], 99.90th=[ 266], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 118, per=25.55%, avg=30.41, stdev=17.60, samples=384 iops : min= 1, max= 29, avg= 6.93, stdev= 4.44, samples=384 write: IOPS=7, BW=31.4KiB/s (32.1kB/s)(6260KiB/199480msec); 0 zone resets clat (msec): min=14, max=1060, avg=76.60, stdev=53.26 lat (msec): min=14, max=1060, avg=76.60, stdev=53.26 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 32], 20.00th=[ 40], | 30.00th=[ 46], 40.00th=[ 54], 50.00th=[ 64], 60.00th=[ 75], | 70.00th=[ 89], 80.00th=[ 107], 90.00th=[ 138], 95.00th=[ 163], | 99.00th=[ 247], 99.50th=[ 271], 99.90th=[ 430], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 103, per=24.92%, avg=31.15, stdev=17.37, samples=389 iops : min= 1, max= 25, avg= 7.12, stdev= 4.37, samples=389 lat (msec) : 10=0.78%, 20=6.93%, 50=41.15%, 100=33.53%, 250=17.06% lat (msec) : 500=0.52%, 2000=0.03% cpu : usr=0.05%, sys=1.91%, ctx=5092, 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=179200: Sat Aug 22 04:34:22 2026 read: IOPS=7, BW=30.5KiB/s (31.2kB/s)(6052KiB/198345msec) clat (msec): min=5, max=307, avg=52.12, stdev=40.81 lat (msec): min=5, max=307, avg=52.12, stdev=40.81 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 48], | 70.00th=[ 59], 80.00th=[ 78], 90.00th=[ 108], 95.00th=[ 136], | 99.00th=[ 205], 99.50th=[ 230], 99.90th=[ 253], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 7, max= 111, per=26.24%, avg=31.22, stdev=19.33, samples=375 iops : min= 1, max= 27, avg= 7.13, stdev= 4.87, samples=375 write: IOPS=7, BW=31.4KiB/s (32.2kB/s)(6236KiB/198345msec); 0 zone resets clat (msec): min=13, max=1077, avg=76.30, stdev=54.15 lat (msec): min=13, max=1077, avg=76.31, stdev=54.14 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 27], 10.00th=[ 32], 20.00th=[ 39], | 30.00th=[ 46], 40.00th=[ 54], 50.00th=[ 63], 60.00th=[ 73], | 70.00th=[ 88], 80.00th=[ 108], 90.00th=[ 138], 95.00th=[ 161], | 99.00th=[ 249], 99.50th=[ 309], 99.90th=[ 426], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 95, per=25.04%, avg=31.30, stdev=16.72, samples=385 iops : min= 1, max= 23, avg= 7.15, stdev= 4.21, samples=385 lat (msec) : 10=0.85%, 20=7.52%, 50=40.23%, 100=33.82%, 250=17.02% lat (msec) : 500=0.52%, 2000=0.03% cpu : usr=0.05%, sys=2.02%, ctx=5012, 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=120KiB/s (123kB/s), 29.8KiB/s-30.5KiB/s (30.5kB/s-31.2kB/s), io=23.4MiB (24.6MB), run=198345-200173msec WRITE: bw=126KiB/s (129kB/s), 31.4KiB/s-31.8KiB/s (32.1kB/s-32.6kB/s), io=24.6MiB (25.7MB), run=198345-200173msec 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=179256: Sat Aug 22 04:35:11 2026 read: IOPS=9, BW=160KiB/s (164kB/s)(5920KiB/37033msec) clat (usec): min=50, max=337677, avg=51859.07, stdev=39136.30 lat (usec): min=50, max=337679, avg=51860.28, stdev=39136.33 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 63], 10.00th=[ 12256], 20.00th=[ 25035], | 30.00th=[ 30016], 40.00th=[ 39584], 50.00th=[ 46400], 60.00th=[ 54789], | 70.00th=[ 61604], 80.00th=[ 77071], 90.00th=[ 94897], 95.00th=[107480], | 99.00th=[223347], 99.50th=[325059], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 31, max= 285, per=24.09%, avg=155.64, stdev=57.04, samples=72 iops : min= 1, max= 17, avg= 8.93, stdev= 3.65, samples=72 write: IOPS=10, BW=172KiB/s (176kB/s)(6368KiB/37033msec); 0 zone resets clat (usec): min=1625, max=206598, avg=44742.59, stdev=41975.86 lat (usec): min=1626, max=206600, avg=44747.88, stdev=41974.53 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2540], 10.00th=[ 3884], 20.00th=[ 7701], | 30.00th=[ 14615], 40.00th=[ 25297], 50.00th=[ 33817], 60.00th=[ 41681], | 70.00th=[ 55313], 80.00th=[ 77071], 90.00th=[107480], 95.00th=[125305], | 99.00th=[202376], 99.50th=[206570], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 62, max= 346, per=24.91%, avg=169.42, stdev=61.78, samples=72 iops : min= 3, max= 21, avg= 9.81, stdev= 3.90, samples=72 lat (usec) : 100=3.91%, 250=0.26%, 500=0.26% lat (msec) : 2=1.69%, 4=4.04%, 10=6.90%, 20=7.68%, 50=35.94% lat (msec) : 100=30.08%, 250=8.85%, 500=0.39% cpu : usr=0.06%, sys=5.52%, ctx=1752, 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=179257: Sat Aug 22 04:35:11 2026 read: IOPS=9, BW=157KiB/s (161kB/s)(5744KiB/36483msec) clat (usec): min=52, max=314143, avg=54526.83, stdev=37356.65 lat (usec): min=53, max=314144, avg=54531.78, stdev=37354.71 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 72], 10.00th=[ 19006], 20.00th=[ 29754], | 30.00th=[ 35914], 40.00th=[ 41681], 50.00th=[ 47973], 60.00th=[ 54789], | 70.00th=[ 64750], 80.00th=[ 77071], 90.00th=[ 92799], 95.00th=[122160], | 99.00th=[193987], 99.50th=[200279], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 30, max= 319, per=24.28%, avg=156.82, stdev=66.86, samples=71 iops : min= 1, max= 19, avg= 9.01, stdev= 4.23, samples=71 write: IOPS=11, BW=179KiB/s (184kB/s)(6544KiB/36483msec); 0 zone resets clat (usec): min=1793, max=321493, avg=41249.09, stdev=41772.60 lat (usec): min=1796, max=321495, avg=41252.07, stdev=41772.34 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 2089], 10.00th=[ 4113], 20.00th=[ 8094], | 30.00th=[ 11600], 40.00th=[ 19530], 50.00th=[ 30016], 60.00th=[ 38536], | 70.00th=[ 51119], 80.00th=[ 70779], 90.00th=[ 98042], 95.00th=[119014], | 99.00th=[193987], 99.50th=[202376], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 31, max= 411, per=26.25%, avg=178.49, stdev=83.35, samples=71 iops : min= 1, max= 25, avg=10.38, stdev= 5.24, samples=71 lat (usec) : 100=2.47%, 250=0.78%, 750=0.26% lat (msec) : 2=1.95%, 4=3.26%, 10=8.98%, 20=8.98%, 50=34.64% lat (msec) : 100=29.82%, 250=8.59%, 500=0.26% cpu : usr=0.04%, sys=5.65%, ctx=1768, 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=179258: Sat Aug 22 04:35:11 2026 read: IOPS=10, BW=170KiB/s (174kB/s)(6256KiB/36727msec) clat (usec): min=43, max=228557, avg=56679.48, stdev=38650.07 lat (usec): min=43, max=228558, avg=56686.90, stdev=38646.15 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 69], 10.00th=[ 20055], 20.00th=[ 29754], | 30.00th=[ 35390], 40.00th=[ 42206], 50.00th=[ 49021], 60.00th=[ 56886], | 70.00th=[ 67634], 80.00th=[ 80217], 90.00th=[ 99091], 95.00th=[124257], | 99.00th=[206570], 99.50th=[214959], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 60, max= 379, per=26.38%, avg=170.44, stdev=68.30, samples=72 iops : min= 3, max= 23, avg= 9.86, stdev= 4.32, samples=72 write: IOPS=10, BW=164KiB/s (168kB/s)(6032KiB/36727msec); 0 zone resets clat (usec): min=1626, max=198770, avg=38450.78, stdev=36258.07 lat (usec): min=1628, max=198774, avg=38454.36, stdev=36257.02 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2278], 10.00th=[ 3654], 20.00th=[ 6915], | 30.00th=[ 11469], 40.00th=[ 19006], 50.00th=[ 28705], 60.00th=[ 39584], | 70.00th=[ 49546], 80.00th=[ 60556], 90.00th=[ 90702], 95.00th=[112722], | 99.00th=[156238], 99.50th=[164627], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 345, per=24.20%, avg=164.59, stdev=72.28, samples=71 iops : min= 1, max= 21, avg= 9.51, stdev= 4.59, samples=71 lat (usec) : 50=0.26%, 100=3.26%, 250=0.26%, 1000=0.13% lat (msec) : 2=1.69%, 4=3.52%, 10=8.59%, 20=8.07%, 50=34.77% lat (msec) : 100=31.25%, 250=8.20% cpu : usr=0.07%, sys=5.54%, ctx=1721, 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=179259: Sat Aug 22 04:35:11 2026 read: IOPS=10, BW=165KiB/s (169kB/s)(6032KiB/36468msec) clat (usec): min=40, max=272705, avg=55430.15, stdev=39375.43 lat (usec): min=40, max=272706, avg=55431.39, stdev=39375.40 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 61], 10.00th=[ 103], 20.00th=[ 28443], | 30.00th=[ 34341], 40.00th=[ 42206], 50.00th=[ 49546], 60.00th=[ 57934], | 70.00th=[ 67634], 80.00th=[ 81265], 90.00th=[102237], 95.00th=[130548], | 99.00th=[187696], 99.50th=[238027], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 61, max= 351, per=25.44%, avg=164.32, stdev=63.02, samples=71 iops : min= 3, max= 21, avg= 9.48, stdev= 3.99, samples=71 write: IOPS=10, BW=172KiB/s (176kB/s)(6256KiB/36468msec); 0 zone resets clat (usec): min=1500, max=308492, avg=39699.97, stdev=38065.44 lat (usec): min=1501, max=308494, avg=39709.95, stdev=38060.11 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2311], 10.00th=[ 3589], 20.00th=[ 7111], | 30.00th=[ 10683], 40.00th=[ 18744], 50.00th=[ 30278], 60.00th=[ 39584], | 70.00th=[ 54789], 80.00th=[ 69731], 90.00th=[ 87557], 95.00th=[110625], | 99.00th=[162530], 99.50th=[189793], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 31, max= 350, per=25.20%, avg=171.37, stdev=71.13, samples=71 iops : min= 1, max= 21, avg= 9.93, stdev= 4.50, samples=71 lat (usec) : 50=0.39%, 100=4.43%, 250=0.39%, 500=0.13%, 750=0.26% lat (msec) : 2=1.95%, 4=4.04%, 10=8.33%, 20=7.68%, 50=31.77% lat (msec) : 100=31.64%, 250=8.72%, 500=0.26% cpu : usr=0.06%, sys=5.70%, ctx=1722, 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=647KiB/s (662kB/s), 157KiB/s-170KiB/s (161kB/s-174kB/s), io=23.4MiB (24.5MB), run=36468-37033msec WRITE: bw=680KiB/s (697kB/s), 164KiB/s-179KiB/s (168kB/s-184kB/s), io=24.6MiB (25.8MB), run=36468-37033msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179251: Sat Aug 22 04:35:28 2026 read: IOPS=6, BW=108KiB/s (110kB/s)(5920KiB/54981msec) clat (msec): min=8, max=242, avg=57.89, stdev=43.39 lat (msec): min=8, max=242, avg=57.89, stdev=43.40 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 65], 80.00th=[ 84], 90.00th=[ 120], 95.00th=[ 157], | 99.00th=[ 213], 99.50th=[ 232], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 31, max= 317, per=25.28%, avg=109.96, stdev=63.65, samples=105 iops : min= 1, max= 19, avg= 6.05, stdev= 4.03, samples=105 write: IOPS=7, BW=116KiB/s (119kB/s)(6368KiB/54981msec); 0 zone resets clat (msec): min=15, max=341, avg=83.99, stdev=50.12 lat (msec): min=15, max=341, avg=83.99, stdev=50.12 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 30], 10.00th=[ 35], 20.00th=[ 45], | 30.00th=[ 53], 40.00th=[ 62], 50.00th=[ 70], 60.00th=[ 82], | 70.00th=[ 96], 80.00th=[ 117], 90.00th=[ 157], 95.00th=[ 190], | 99.00th=[ 241], 99.50th=[ 259], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 31, max= 254, per=25.90%, avg=118.63, stdev=51.92, samples=105 iops : min= 1, max= 15, avg= 6.60, stdev= 3.30, samples=105 lat (msec) : 10=0.13%, 20=5.60%, 50=36.20%, 100=36.59%, 250=21.09% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=2.02%, ctx=1309, 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=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=179252: Sat Aug 22 04:35:28 2026 read: IOPS=6, BW=105KiB/s (108kB/s)(5744KiB/54608msec) clat (msec): min=8, max=317, avg=57.19, stdev=45.99 lat (msec): min=8, max=317, avg=57.20, stdev=45.99 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 62], 80.00th=[ 81], 90.00th=[ 112], 95.00th=[ 157], | 99.00th=[ 236], 99.50th=[ 271], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 31, max= 349, per=24.91%, avg=108.37, stdev=67.84, samples=103 iops : min= 1, max= 21, avg= 5.95, stdev= 4.29, samples=103 write: IOPS=7, BW=120KiB/s (123kB/s)(6544KiB/54608msec); 0 zone resets clat (msec): min=10, max=363, avg=82.89, stdev=48.04 lat (msec): min=10, max=363, avg=82.89, stdev=48.04 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 32], 10.00th=[ 37], 20.00th=[ 44], | 30.00th=[ 54], 40.00th=[ 64], 50.00th=[ 73], 60.00th=[ 83], | 70.00th=[ 96], 80.00th=[ 112], 90.00th=[ 146], 95.00th=[ 167], | 99.00th=[ 253], 99.50th=[ 334], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 30, max= 286, per=25.99%, avg=119.06, stdev=58.57, samples=107 iops : min= 1, max= 17, avg= 6.63, stdev= 3.72, samples=107 lat (msec) : 10=0.13%, 20=4.04%, 50=37.63%, 100=37.24%, 250=20.05% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=1.94%, ctx=1294, 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=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=179253: Sat Aug 22 04:35:28 2026 read: IOPS=7, BW=115KiB/s (117kB/s)(6256KiB/54613msec) clat (msec): min=6, max=324, avg=60.24, stdev=46.77 lat (msec): min=6, max=324, avg=60.27, stdev=46.77 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 55], | 70.00th=[ 68], 80.00th=[ 88], 90.00th=[ 122], 95.00th=[ 157], | 99.00th=[ 245], 99.50th=[ 259], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 320, per=26.68%, avg=116.07, stdev=67.95, samples=106 iops : min= 1, max= 20, avg= 6.43, stdev= 4.31, samples=106 write: IOPS=6, BW=110KiB/s (113kB/s)(6032KiB/54613msec); 0 zone resets clat (msec): min=20, max=352, avg=82.18, stdev=49.85 lat (msec): min=20, max=352, avg=82.18, stdev=49.85 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 30], 10.00th=[ 36], 20.00th=[ 43], | 30.00th=[ 52], 40.00th=[ 59], 50.00th=[ 68], 60.00th=[ 80], | 70.00th=[ 94], 80.00th=[ 114], 90.00th=[ 150], 95.00th=[ 174], | 99.00th=[ 284], 99.50th=[ 347], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 30, max= 315, per=24.04%, avg=110.12, stdev=55.98, samples=106 iops : min= 1, max= 19, avg= 6.06, stdev= 3.54, samples=106 lat (msec) : 10=0.13%, 20=4.04%, 50=38.93%, 100=35.81%, 250=20.18% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=2.05%, ctx=1329, 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=179254: Sat Aug 22 04:35:28 2026 read: IOPS=7, BW=112KiB/s (115kB/s)(6032KiB/53738msec) clat (msec): min=9, max=248, avg=56.06, stdev=42.27 lat (msec): min=9, max=248, avg=56.07, stdev=42.29 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 17], 10.00th=[ 21], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 51], | 70.00th=[ 58], 80.00th=[ 75], 90.00th=[ 113], 95.00th=[ 155], | 99.00th=[ 211], 99.50th=[ 241], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 31, max= 314, per=26.38%, avg=114.75, stdev=65.62, samples=103 iops : min= 1, max= 19, avg= 6.36, stdev= 4.16, samples=103 write: IOPS=7, BW=116KiB/s (119kB/s)(6256KiB/53738msec); 0 zone resets clat (msec): min=14, max=450, avg=83.00, stdev=53.35 lat (msec): min=14, max=450, avg=83.01, stdev=53.35 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 29], 10.00th=[ 34], 20.00th=[ 41], | 30.00th=[ 51], 40.00th=[ 59], 50.00th=[ 70], 60.00th=[ 81], | 70.00th=[ 95], 80.00th=[ 117], 90.00th=[ 148], 95.00th=[ 188], | 99.00th=[ 279], 99.50th=[ 288], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 31, max= 381, per=25.40%, avg=116.31, stdev=60.04, samples=106 iops : min= 1, max= 23, avg= 6.45, stdev= 3.80, samples=106 lat (msec) : 10=0.26%, 20=4.30%, 50=39.58%, 100=36.46%, 250=18.62% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=2.11%, ctx=1306, 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=436KiB/s (446kB/s), 105KiB/s-115KiB/s (108kB/s-117kB/s), io=23.4MiB (24.5MB), run=53738-54981msec WRITE: bw=458KiB/s (469kB/s), 110KiB/s-120KiB/s (113kB/s-123kB/s), io=24.6MiB (25.8MB), run=53738-54981msec 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=179278: Sat Aug 22 04:35:45 2026 read: IOPS=1, BW=1772KiB/s (1815kB/s)(7168KiB/4045msec) clat (usec): min=690, max=378490, avg=219471.58, stdev=139770.94 lat (usec): min=691, max=378492, avg=219473.10, stdev=139771.23 clat percentiles (usec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 56361], | 30.00th=[238027], 40.00th=[238027], 50.00th=[254804], 60.00th=[274727], | 70.00th=[274727], 80.00th=[333448], 90.00th=[379585], 95.00th=[379585], | 99.00th=[379585], 99.50th=[379585], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 2007, max= 6071, per=82.61%, avg=3365.67, stdev=2342.90, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1266KiB/s (1296kB/s)(5120KiB/4045msec); 0 zone resets clat (msec): min=194, max=861, avg=433.13, stdev=269.87 lat (msec): min=194, max=861, avg=433.47, stdev=269.87 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 209], 40.00th=[ 209], 50.00th=[ 439], 60.00th=[ 439], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 2019, max= 4071, per=47.56%, avg=2712.67, stdev=1176.44, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 1000=8.33% cpu : usr=0.02%, sys=13.50%, ctx=175, 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=179279: Sat Aug 22 04:35:45 2026 read: IOPS=0, BW=407KiB/s (417kB/s)(2048KiB/5026msec) clat (msec): min=205, max=394, avg=299.97, stdev=133.36 lat (msec): min=205, max=394, avg=299.97, stdev=133.36 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 2023, max= 2023, per=49.66%, avg=2023.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2037KiB/s (2086kB/s)(10.0MiB/5026msec); 0 zone resets clat (msec): min=151, max=873, avg=417.32, stdev=272.97 lat (msec): min=151, max=873, avg=417.42, stdev=272.97 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 192], | 30.00th=[ 201], 40.00th=[ 239], 50.00th=[ 288], 60.00th=[ 300], | 70.00th=[ 414], 80.00th=[ 735], 90.00th=[ 776], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 2007, max= 5965, per=47.03%, avg=2682.83, stdev=1607.99, samples=6 iops : min= 1, max= 5, avg= 1.83, stdev= 1.60, samples=6 lat (msec) : 250=41.67%, 500=33.33%, 750=8.33%, 1000=16.67% cpu : usr=0.02%, sys=14.63%, ctx=207, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179280: Sat Aug 22 04:35:45 2026 read: IOPS=1, BW=1842KiB/s (1886kB/s)(6144KiB/3336msec) clat (usec): min=493, max=288278, avg=116061.18, stdev=130134.50 lat (usec): min=494, max=288279, avg=116062.46, stdev=130134.45 clat percentiles (usec): | 1.00th=[ 494], 5.00th=[ 494], 10.00th=[ 494], 20.00th=[ 619], | 30.00th=[ 619], 40.00th=[ 1270], 50.00th=[ 1270], 60.00th=[196084], | 70.00th=[208667], 80.00th=[208667], 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= 2007, max= 4096, per=66.49%, avg=2708.67, stdev=1201.49, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1842KiB/s (1886kB/s)(6144KiB/3336msec); 0 zone resets clat (msec): min=177, max=541, avg=395.94, stdev=158.34 lat (msec): min=177, max=541, avg=396.02, stdev=158.37 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 510], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 2007, max= 4047, per=47.35%, avg=2700.67, stdev=1166.14, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 250=33.33%, 500=16.67%, 750=25.00% cpu : usr=0.00%, sys=16.61%, ctx=136, 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=179281: Sat Aug 22 04:35:45 2026 read: IOPS=1, BW=1314KiB/s (1345kB/s)(5120KiB/3897msec) clat (usec): min=434, max=375976, avg=154288.73, stdev=183052.17 lat (usec): min=434, max=375976, avg=154289.50, stdev=183052.19 clat percentiles (usec): | 1.00th=[ 437], 5.00th=[ 437], 10.00th=[ 437], 20.00th=[ 437], | 30.00th=[ 545], 40.00th=[ 545], 50.00th=[ 66847], 60.00th=[ 66847], | 70.00th=[329253], 80.00th=[329253], 90.00th=[375391], 95.00th=[375391], | 99.00th=[375391], 99.50th=[375391], 99.90th=[375391], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 2007, max= 6059, per=98.99%, avg=4033.00, stdev=2865.20, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1839KiB/s (1884kB/s)(7168KiB/3897msec); 0 zone resets clat (msec): min=172, max=1372, avg=435.12, stdev=428.49 lat (msec): min=176, max=1372, avg=435.87, stdev=428.06 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 203], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 224], 60.00th=[ 380], | 70.00th=[ 380], 80.00th=[ 481], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 1783, max= 4047, per=40.66%, avg=2319.00, stdev=851.93, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=14.09%, ctx=145, 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=4075KiB/s (4173kB/s), 407KiB/s-1842KiB/s (417kB/s-1886kB/s), io=20.0MiB (20.0MB), run=3336-5026msec WRITE: bw=5705KiB/s (5842kB/s), 1266KiB/s-2037KiB/s (1296kB/s-2086kB/s), io=28.0MiB (29.4MB), run=3336-5026msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179273: Sat Aug 22 04:35:46 2026 read: IOPS=1, BW=1745KiB/s (1787kB/s)(7168KiB/4108msec) clat (msec): min=88, max=690, avg=271.38, stdev=237.95 lat (msec): min=88, max=690, avg=271.38, stdev=237.95 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 90], | 30.00th=[ 102], 40.00th=[ 102], 50.00th=[ 105], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 430], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1889, max= 5699, per=74.48%, avg=2905.50, stdev=1863.32, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 write: IOPS=1, BW=1246KiB/s (1276kB/s)(5120KiB/4108msec); 0 zone resets clat (msec): min=312, max=715, avg=436.70, stdev=170.56 lat (msec): min=312, max=715, avg=436.79, stdev=170.56 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1858, max= 2011, per=35.41%, avg=1934.25, stdev=68.69, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=16.67%, 250=16.67%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=5.14%, ctx=110, 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=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=179274: Sat Aug 22 04:35:46 2026 read: IOPS=0, BW=415KiB/s (425kB/s)(2048KiB/4938msec) clat (msec): min=299, max=1380, avg=839.84, stdev=764.62 lat (msec): min=299, max=1380, avg=839.84, stdev=764.62 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 1969, max= 2039, per=51.37%, avg=2004.00, stdev=49.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2074KiB/s (2123kB/s)(10.0MiB/4938msec); 0 zone resets clat (msec): min=111, max=723, avg=298.94, stdev=197.28 lat (msec): min=111, max=723, avg=299.02, stdev=197.28 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 176], 50.00th=[ 199], 60.00th=[ 243], | 70.00th=[ 309], 80.00th=[ 422], 90.00th=[ 510], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1889, max= 8015, per=81.81%, avg=4468.50, stdev=3076.89, samples=4 iops : min= 1, max= 7, avg= 3.50, stdev= 3.00, samples=4 lat (msec) : 250=50.00%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=3.63%, ctx=69, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179275: Sat Aug 22 04:35:46 2026 read: IOPS=1, BW=1171KiB/s (1199kB/s)(6144KiB/5249msec) clat (msec): min=118, max=1052, avg=471.75, stdev=321.78 lat (msec): min=118, max=1052, avg=471.75, stdev=321.78 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 1858, max= 4007, per=63.62%, avg=2481.75, stdev=1020.12, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1171KiB/s (1199kB/s)(6144KiB/5249msec); 0 zone resets clat (msec): min=107, max=595, avg=374.52, stdev=174.78 lat (msec): min=107, max=595, avg=374.61, stdev=174.79 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 460], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 1889, max= 3938, per=43.52%, avg=2376.80, stdev=874.68, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=25.00%, 500=58.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.02%, ctx=104, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179276: Sat Aug 22 04:35:46 2026 read: IOPS=1, BW=1070KiB/s (1096kB/s)(5120KiB/4785msec) clat (msec): min=116, max=560, avg=260.83, stdev=174.52 lat (msec): min=116, max=560, avg=260.83, stdev=174.52 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 213], 60.00th=[ 213], | 70.00th=[ 247], 80.00th=[ 247], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 2011, max= 5575, per=97.23%, avg=3793.00, stdev=2520.13, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1498KiB/s (1534kB/s)(7168KiB/4785msec); 0 zone resets clat (msec): min=244, max=653, avg=456.14, stdev=145.03 lat (msec): min=244, max=653, avg=456.25, stdev=145.03 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 317], | 30.00th=[ 439], 40.00th=[ 439], 50.00th=[ 443], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 600], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1889, max= 4007, per=42.19%, avg=2304.33, stdev=836.41, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 250=41.67%, 500=25.00%, 750=33.33% cpu : usr=0.04%, sys=8.72%, ctx=136, 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=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=3902KiB/s (3995kB/s), 415KiB/s-1745KiB/s (425kB/s-1787kB/s), io=20.0MiB (20.0MB), run=4108-5249msec WRITE: bw=5462KiB/s (5593kB/s), 1171KiB/s-2074KiB/s (1199kB/s-2123kB/s), io=28.0MiB (29.4MB), run=4108-5249msec 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=179293: Sat Aug 22 04:36:00 2026 read: IOPS=0, BW=3900KiB/s (3993kB/s)(12.0MiB/3151msec) clat (msec): min=299, max=1369, avg=975.67, stdev=588.33 lat (msec): min=299, max=1369, avg=975.68, stdev=588.33 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.40%, ctx=64, 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=179294: Sat Aug 22 04:36:00 2026 read: IOPS=0, BW=1614KiB/s (1653kB/s)(4096KiB/2538msec) clat (nsec): min=945804k, max=945804k, avg=945804040.00, stdev= 0.00 lat (nsec): min=945807k, max=945807k, avg=945806584.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 944], 5.00th=[ 944], 10.00th=[ 944], 20.00th=[ 944], | 30.00th=[ 944], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3228KiB/s (3305kB/s)(8192KiB/2538msec); 0 zone resets clat (msec): min=375, max=1161, avg=768.47, stdev=555.28 lat (msec): min=376, max=1161, avg=768.87, stdev=555.22 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 1167], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8175, max= 8175, per=71.48%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.34%, ctx=44, 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=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=179295: Sat Aug 22 04:36:00 2026 write: IOPS=1, BW=4632KiB/s (4743kB/s)(12.0MiB/2653msec); 0 zone resets clat (msec): min=350, max=1229, avg=837.30, stdev=447.34 lat (msec): min=350, max=1230, avg=837.66, stdev=447.32 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8175, max= 8175, per=71.48%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.60%, ctx=55, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179296: Sat Aug 22 04:36:00 2026 write: IOPS=1, BW=4289KiB/s (4392kB/s)(12.0MiB/2865msec); 0 zone resets clat (msec): min=891, max=1033, avg=938.86, stdev=81.92 lat (msec): min=891, max=1033, avg=939.42, stdev=81.86 clat percentiles (msec): | 1.00th=[ 894], 5.00th=[ 894], 10.00th=[ 894], 20.00th=[ 894], | 30.00th=[ 894], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 894], | 70.00th=[ 1036], 80.00th=[ 1036], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7937, max= 8192, per=70.51%, avg=8064.50, stdev=180.31, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.89%, ctx=62, 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=5200KiB/s (5324kB/s), 1614KiB/s-3900KiB/s (1653kB/s-3993kB/s), io=16.0MiB (16.8MB), run=2538-3151msec WRITE: bw=11.2MiB/s (11.7MB/s), 3228KiB/s-4632KiB/s (3305kB/s-4743kB/s), io=32.0MiB (33.6MB), run=2538-2865msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179289: Sat Aug 22 04:36:00 2026 read: IOPS=1, BW=5276KiB/s (5403kB/s)(12.0MiB/2329msec) clat (msec): min=646, max=821, avg=759.06, stdev=97.43 lat (msec): min=646, max=821, avg=759.06, stdev=97.43 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] 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=66.67% cpu : usr=0.00%, sys=12.29%, ctx=285, 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=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=179290: Sat Aug 22 04:36:00 2026 read: IOPS=0, BW=1844KiB/s (1888kB/s)(4096KiB/2221msec) clat (nsec): min=813061k, max=813061k, avg=813061491.00, stdev= 0.00 lat (nsec): min=813064k, max=813064k, avg=813063527.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 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=3688KiB/s (3777kB/s)(8192KiB/2221msec); 0 zone resets clat (msec): min=337, max=941, avg=639.86, stdev=427.08 lat (msec): min=338, max=942, avg=640.26, stdev=427.14 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 944], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 8143, max= 8143, per=84.47%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=9.37%, ctx=122, 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=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=179291: Sat Aug 22 04:36:00 2026 write: IOPS=0, BW=3615KiB/s (3702kB/s)(12.0MiB/3399msec); 0 zone resets clat (msec): min=230, max=2042, avg=1121.64, stdev=906.57 lat (msec): min=231, max=2043, avg=1122.03, stdev=906.47 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 2039], 80.00th=[ 2039], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 8047, max= 8047, per=83.48%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.15%, ctx=108, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=179292: Sat Aug 22 04:36:00 2026 write: IOPS=1, BW=4455KiB/s (4562kB/s)(12.0MiB/2758msec); 0 zone resets clat (msec): min=247, max=1664, avg=875.04, stdev=722.30 lat (msec): min=248, max=1665, avg=875.63, stdev=722.15 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 6390, max= 8110, per=75.21%, avg=7250.00, stdev=1216.22, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.22%, ctx=62, 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=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=7035KiB/s (7204kB/s), 1844KiB/s-5276KiB/s (1888kB/s-5403kB/s), io=16.0MiB (16.8MB), run=2221-2329msec WRITE: bw=9640KiB/s (9872kB/s), 3615KiB/s-4455KiB/s (3702kB/s-4562kB/s), io=32.0MiB (33.6MB), run=2221-3399msec