== sanity test 398b: DIO and buffer IO race ============== 02:10:24 (1788588624) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.90627 s, 8.5 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179231: Sat Sep 5 02:12:50 2026 read: IOPS=11, BW=47.2KiB/s (48.3kB/s)(5992KiB/126947msec) clat (usec): min=45, max=284951, avg=46645.72, stdev=31936.84 lat (usec): min=46, max=284952, avg=46646.89, stdev=31936.87 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10945], 10.00th=[ 16057], 20.00th=[ 21890], | 30.00th=[ 27657], 40.00th=[ 33424], 50.00th=[ 40109], 60.00th=[ 46924], | 70.00th=[ 55837], 80.00th=[ 67634], 90.00th=[ 85459], 95.00th=[105382], | 99.00th=[156238], 99.50th=[173016], 99.90th=[250610], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 111, per=25.04%, avg=46.83, stdev=20.70, samples=249 iops : min= 1, max= 27, avg=11.06, stdev= 5.21, samples=249 write: IOPS=12, BW=49.6KiB/s (50.8kB/s)(6296KiB/126947msec); 0 zone resets clat (usec): min=786, max=721313, avg=35963.60, stdev=43209.38 lat (usec): min=787, max=721314, avg=35970.77, stdev=43207.31 clat percentiles (usec): | 1.00th=[ 1012], 5.00th=[ 1139], 10.00th=[ 1270], 20.00th=[ 2900], | 30.00th=[ 5932], 40.00th=[ 14091], 50.00th=[ 23200], 60.00th=[ 33424], | 70.00th=[ 45351], 80.00th=[ 62129], 90.00th=[ 88605], 95.00th=[110625], | 99.00th=[185598], 99.50th=[204473], 99.90th=[274727], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 7, max= 126, per=25.20%, avg=49.39, stdev=24.48, samples=248 iops : min= 1, max= 31, avg=11.71, stdev= 6.16, samples=248 lat (usec) : 50=0.36%, 100=1.50%, 250=0.10%, 1000=0.36% lat (msec) : 2=7.55%, 4=4.49%, 10=6.12%, 20=11.20%, 50=36.88% lat (msec) : 100=24.67%, 250=6.54%, 500=0.20%, 750=0.03% cpu : usr=0.08%, sys=4.25%, ctx=6234, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179232: Sat Sep 5 02:12:50 2026 read: IOPS=11, BW=47.7KiB/s (48.8kB/s)(5940KiB/124588msec) clat (usec): min=41, max=321719, avg=46536.01, stdev=34070.11 lat (usec): min=41, max=321720, avg=46542.27, stdev=34071.85 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11469], 10.00th=[ 15926], 20.00th=[ 21890], | 30.00th=[ 27132], 40.00th=[ 33162], 50.00th=[ 39584], 60.00th=[ 45876], | 70.00th=[ 54264], 80.00th=[ 65274], 90.00th=[ 84411], 95.00th=[109577], | 99.00th=[181404], 99.50th=[212861], 99.90th=[295699], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 7, max= 148, per=25.41%, avg=47.52, stdev=21.69, samples=244 iops : min= 1, max= 37, avg=11.23, stdev= 5.44, samples=244 write: IOPS=12, BW=50.0KiB/s (52.2kB/s)(6348KiB/124588msec); 0 zone resets clat (usec): min=674, max=686990, avg=34665.72, stdev=41764.50 lat (usec): min=674, max=686991, avg=34667.93, stdev=41764.56 clat percentiles (usec): | 1.00th=[ 1004], 5.00th=[ 1139], 10.00th=[ 1254], 20.00th=[ 2802], | 30.00th=[ 5276], 40.00th=[ 13435], 50.00th=[ 22152], 60.00th=[ 31851], | 70.00th=[ 44303], 80.00th=[ 59507], 90.00th=[ 85459], 95.00th=[110625], | 99.00th=[173016], 99.50th=[206570], 99.90th=[246416], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 159, per=25.94%, avg=50.84, stdev=25.10, samples=244 iops : min= 1, max= 39, avg=12.07, stdev= 6.32, samples=244 lat (usec) : 50=0.23%, 100=1.40%, 250=0.07%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.46% lat (msec) : 2=8.04%, 4=4.88%, 10=5.89%, 20=11.85%, 50=37.27% lat (msec) : 100=23.01%, 250=6.64%, 500=0.13%, 750=0.03% cpu : usr=0.07%, sys=4.47%, ctx=6188, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179233: Sat Sep 5 02:12:50 2026 read: IOPS=11, BW=47.5KiB/s (48.7kB/s)(6028KiB/126852msec) clat (usec): min=33, max=750299, avg=47885.90, stdev=38947.06 lat (usec): min=33, max=750300, avg=47887.26, stdev=38947.04 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11731], 10.00th=[ 16319], 20.00th=[ 22152], | 30.00th=[ 27395], 40.00th=[ 33424], 50.00th=[ 39584], 60.00th=[ 46400], | 70.00th=[ 55313], 80.00th=[ 66847], 90.00th=[ 88605], 95.00th=[109577], | 99.00th=[170918], 99.50th=[233833], 99.90th=[329253], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 7, max= 143, per=25.21%, avg=47.14, stdev=22.73, samples=249 iops : min= 1, max= 35, avg=11.14, stdev= 5.71, samples=249 write: IOPS=12, BW=49.3KiB/s (50.5kB/s)(6260KiB/126852msec); 0 zone resets clat (usec): min=612, max=311037, avg=34655.90, stdev=38987.91 lat (usec): min=612, max=311038, avg=34657.81, stdev=38987.83 clat percentiles (usec): | 1.00th=[ 1012], 5.00th=[ 1139], 10.00th=[ 1287], 20.00th=[ 2442], | 30.00th=[ 5473], 40.00th=[ 11994], 50.00th=[ 23200], 60.00th=[ 33424], | 70.00th=[ 43779], 80.00th=[ 58983], 90.00th=[ 86508], 95.00th=[110625], | 99.00th=[173016], 99.50th=[196084], 99.90th=[246416], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 119, per=25.17%, avg=49.33, stdev=23.61, samples=247 iops : min= 1, max= 29, avg=11.69, stdev= 5.94, samples=247 lat (usec) : 50=0.29%, 100=1.20%, 250=0.16%, 750=0.16%, 1000=0.29% lat (msec) : 2=8.37%, 4=4.65%, 10=6.25%, 20=10.58%, 50=37.11% lat (msec) : 100=23.83%, 250=6.90%, 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=4.36%, ctx=6252, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179234: Sat Sep 5 02:12:50 2026 read: IOPS=11, BW=47.3KiB/s (48.5kB/s)(6052KiB/127902msec) clat (usec): min=35, max=905347, avg=48169.12, stdev=41041.31 lat (usec): min=35, max=905349, avg=48171.59, stdev=41040.94 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 11338], 10.00th=[ 17171], 20.00th=[ 22676], | 30.00th=[ 27395], 40.00th=[ 33162], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 55313], 80.00th=[ 67634], 90.00th=[ 90702], 95.00th=[111674], | 99.00th=[175113], 99.50th=[202376], 99.90th=[429917], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 7, max= 127, per=25.36%, avg=47.43, stdev=21.00, samples=248 iops : min= 1, max= 31, avg=11.21, stdev= 5.28, samples=248 write: IOPS=12, BW=48.8KiB/s (49.9kB/s)(6236KiB/127902msec); 0 zone resets clat (usec): min=710, max=287246, avg=34984.17, stdev=38230.68 lat (usec): min=711, max=287247, avg=34986.25, stdev=38230.30 clat percentiles (usec): | 1.00th=[ 1004], 5.00th=[ 1139], 10.00th=[ 1303], 20.00th=[ 3032], | 30.00th=[ 5735], 40.00th=[ 14615], 50.00th=[ 24249], 60.00th=[ 32900], | 70.00th=[ 45351], 80.00th=[ 61080], 90.00th=[ 85459], 95.00th=[109577], | 99.00th=[170918], 99.50th=[185598], 99.90th=[252707], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 7, max= 141, per=24.72%, avg=48.44, stdev=23.55, samples=250 iops : min= 1, max= 35, avg=11.46, stdev= 5.92, samples=250 lat (usec) : 50=0.36%, 100=1.46%, 250=0.13%, 750=0.07%, 1000=0.46% lat (msec) : 2=7.26%, 4=4.56%, 10=6.35%, 20=10.32%, 50=37.79% lat (msec) : 100=23.96%, 250=7.13%, 500=0.13%, 1000=0.03% cpu : usr=0.07%, sys=4.17%, ctx=6189, 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=188KiB/s (192kB/s), 47.2KiB/s-47.7KiB/s (48.3kB/s-48.8kB/s), io=23.4MiB (24.6MB), run=124588-127902msec WRITE: bw=197KiB/s (201kB/s), 48.8KiB/s-50.0KiB/s (49.9kB/s-52.2kB/s), io=24.6MiB (25.7MB), run=124588-127902msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179236: Sat Sep 5 02:13:29 2026 read: IOPS=8, BW=35.9KiB/s (36.7kB/s)(5992KiB/167030msec) clat (msec): min=5, max=872, avg=42.98, stdev=47.31 lat (msec): min=5, max=872, avg=42.98, stdev=47.31 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 62], 90.00th=[ 95], 95.00th=[ 130], | 99.00th=[ 230], 99.50th=[ 243], 99.90th=[ 326], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 120, per=25.92%, avg=37.06, stdev=26.96, samples=315 iops : min= 1, max= 30, avg= 8.60, stdev= 6.77, samples=315 write: IOPS=9, BW=37.7KiB/s (38.6kB/s)(6296KiB/167030msec); 0 zone resets clat (msec): min=10, max=440, avg=65.15, stdev=51.86 lat (msec): min=10, max=440, avg=65.15, stdev=51.86 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 47], 60.00th=[ 59], | 70.00th=[ 73], 80.00th=[ 96], 90.00th=[ 134], 95.00th=[ 171], | 99.00th=[ 257], 99.50th=[ 296], 99.90th=[ 388], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7, max= 135, per=25.15%, avg=37.73, stdev=25.40, samples=325 iops : min= 1, max= 33, avg= 8.76, stdev= 6.39, samples=325 lat (msec) : 10=3.06%, 20=17.12%, 50=43.36%, 100=22.79%, 250=12.83% lat (msec) : 500=0.81%, 1000=0.03% cpu : usr=0.05%, sys=1.52%, ctx=4893, 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=179237: Sat Sep 5 02:13:29 2026 read: IOPS=8, BW=35.6KiB/s (36.4kB/s)(5940KiB/167044msec) clat (msec): min=4, max=741, avg=42.30, stdev=44.95 lat (msec): min=4, max=741, avg=42.30, stdev=44.95 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 61], 90.00th=[ 99], 95.00th=[ 129], | 99.00th=[ 199], 99.50th=[ 232], 99.90th=[ 435], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 151, per=25.42%, avg=36.35, stdev=27.30, samples=318 iops : min= 1, max= 37, avg= 8.42, stdev= 6.87, samples=318 write: IOPS=9, BW=38.0KiB/s (38.9kB/s)(6348KiB/167044msec); 0 zone resets clat (msec): min=10, max=374, avg=65.61, stdev=51.04 lat (msec): min=10, max=374, avg=65.61, stdev=51.04 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 49], 60.00th=[ 61], | 70.00th=[ 77], 80.00th=[ 96], 90.00th=[ 131], 95.00th=[ 167], | 99.00th=[ 268], 99.50th=[ 300], 99.90th=[ 363], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 135, per=25.20%, avg=37.80, stdev=25.06, samples=327 iops : min= 1, max= 33, avg= 8.78, stdev= 6.29, samples=327 lat (msec) : 10=3.42%, 20=15.92%, 50=43.03%, 100=23.93%, 250=12.79% lat (msec) : 500=0.88%, 750=0.03% cpu : usr=0.05%, sys=1.51%, ctx=4687, 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=179238: Sat Sep 5 02:13:29 2026 read: IOPS=9, BW=36.2KiB/s (37.1kB/s)(6028KiB/166467msec) clat (msec): min=4, max=289, avg=44.28, stdev=42.56 lat (msec): min=4, max=289, avg=44.28, stdev=42.56 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 48], 80.00th=[ 67], 90.00th=[ 105], 95.00th=[ 138], | 99.00th=[ 207], 99.50th=[ 232], 99.90th=[ 284], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 7, max= 127, per=25.31%, avg=36.20, stdev=25.48, samples=322 iops : min= 1, max= 31, avg= 8.38, stdev= 6.41, samples=322 write: IOPS=9, BW=37.6KiB/s (38.5kB/s)(6260KiB/166467msec); 0 zone resets clat (msec): min=11, max=788, avg=63.65, stdev=53.29 lat (msec): min=11, max=788, avg=63.66, stdev=53.29 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 71], 80.00th=[ 91], 90.00th=[ 125], 95.00th=[ 165], | 99.00th=[ 264], 99.50th=[ 288], 99.90th=[ 451], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 127, per=25.14%, avg=37.71, stdev=25.90, samples=321 iops : min= 1, max= 31, avg= 8.76, stdev= 6.51, samples=321 lat (msec) : 10=3.29%, 20=16.67%, 50=42.81%, 100=23.60%, 250=12.92% lat (msec) : 500=0.68%, 1000=0.03% cpu : usr=0.05%, sys=1.53%, ctx=4767, 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=179239: Sat Sep 5 02:13:29 2026 read: IOPS=9, BW=36.3KiB/s (37.2kB/s)(6052KiB/166625msec) clat (msec): min=5, max=451, avg=42.39, stdev=41.32 lat (msec): min=5, max=451, avg=42.39, stdev=41.32 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 62], 90.00th=[ 95], 95.00th=[ 128], | 99.00th=[ 194], 99.50th=[ 222], 99.90th=[ 305], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 7, max= 135, per=26.05%, avg=37.25, stdev=26.72, samples=316 iops : min= 1, max= 33, avg= 8.65, stdev= 6.72, samples=316 write: IOPS=9, BW=37.4KiB/s (38.3kB/s)(6236KiB/166625msec); 0 zone resets clat (msec): min=10, max=786, avg=65.67, stdev=54.84 lat (msec): min=10, max=786, avg=65.67, stdev=54.84 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 39], 50.00th=[ 48], 60.00th=[ 60], | 70.00th=[ 75], 80.00th=[ 97], 90.00th=[ 134], 95.00th=[ 169], | 99.00th=[ 264], 99.50th=[ 296], 99.90th=[ 439], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 127, per=25.01%, avg=37.51, stdev=25.41, samples=323 iops : min= 1, max= 31, avg= 8.71, stdev= 6.39, samples=323 lat (msec) : 10=3.06%, 20=17.15%, 50=42.61%, 100=23.24%, 250=13.15% lat (msec) : 500=0.75%, 1000=0.03% cpu : usr=0.04%, sys=1.55%, ctx=4781, 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=144KiB/s (147kB/s), 35.6KiB/s-36.3KiB/s (36.4kB/s-37.2kB/s), io=23.4MiB (24.6MB), run=166467-167044msec WRITE: bw=150KiB/s (154kB/s), 37.4KiB/s-38.0KiB/s (38.3kB/s-38.9kB/s), io=24.6MiB (25.7MB), run=166467-167044msec 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=179289: Sat Sep 5 02:14:08 2026 read: IOPS=12, BW=207KiB/s (212kB/s)(5920KiB/28626msec) clat (usec): min=50, max=289448, avg=41076.04, stdev=30686.35 lat (usec): min=52, max=289449, avg=41078.18, stdev=30686.19 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 70], 10.00th=[ 15664], 20.00th=[ 21365], | 30.00th=[ 26084], 40.00th=[ 31327], 50.00th=[ 35390], 60.00th=[ 39060], | 70.00th=[ 46924], 80.00th=[ 56361], 90.00th=[ 69731], 95.00th=[ 92799], | 99.00th=[156238], 99.50th=[183501], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 31, max= 469, per=24.97%, avg=205.25, stdev=84.93, samples=56 iops : min= 1, max= 29, avg=12.05, stdev= 5.44, samples=56 write: IOPS=13, BW=222KiB/s (228kB/s)(6368KiB/28626msec); 0 zone resets clat (usec): min=1314, max=228709, avg=33315.15, stdev=33250.73 lat (usec): min=1314, max=228713, avg=33317.83, stdev=33252.68 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1762], 10.00th=[ 2212], 20.00th=[ 4424], | 30.00th=[ 8455], 40.00th=[ 17171], 50.00th=[ 23725], 60.00th=[ 32375], | 70.00th=[ 40109], 80.00th=[ 59507], 90.00th=[ 82314], 95.00th=[ 95945], | 99.00th=[128451], 99.50th=[173016], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 30, max= 377, per=26.22%, avg=226.58, stdev=89.19, samples=55 iops : min= 1, max= 23, avg=13.38, stdev= 5.65, samples=55 lat (usec) : 100=2.99%, 250=0.26%, 750=0.13% lat (msec) : 2=4.43%, 4=5.21%, 10=7.29%, 20=9.77%, 50=43.88% lat (msec) : 100=21.88%, 250=4.04%, 500=0.13% cpu : usr=0.06%, sys=5.39%, ctx=1701, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179290: Sat Sep 5 02:14:08 2026 read: IOPS=12, BW=197KiB/s (202kB/s)(5744KiB/29133msec) clat (usec): min=36, max=176554, avg=41188.40, stdev=26952.34 lat (usec): min=36, max=176555, avg=41189.79, stdev=26952.25 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 67], 10.00th=[ 16712], 20.00th=[ 22152], | 30.00th=[ 26084], 40.00th=[ 31589], 50.00th=[ 37487], 60.00th=[ 42206], | 70.00th=[ 49021], 80.00th=[ 55837], 90.00th=[ 73925], 95.00th=[ 90702], | 99.00th=[132645], 99.50th=[177210], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 59, max= 407, per=24.37%, avg=200.34, stdev=76.47, samples=56 iops : min= 3, max= 25, avg=11.73, stdev= 4.83, samples=56 write: IOPS=14, BW=225KiB/s (230kB/s)(6544KiB/29133msec); 0 zone resets clat (usec): min=1419, max=199572, avg=34839.10, stdev=33294.69 lat (usec): min=1422, max=199573, avg=34850.74, stdev=33291.44 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1795], 10.00th=[ 2802], 20.00th=[ 5145], | 30.00th=[ 9765], 40.00th=[ 18744], 50.00th=[ 25035], 60.00th=[ 33817], | 70.00th=[ 47973], 80.00th=[ 57934], 90.00th=[ 81265], 95.00th=[104334], | 99.00th=[131597], 99.50th=[147850], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 31, max= 413, per=25.99%, avg=224.58, stdev=79.91, samples=57 iops : min= 1, max= 25, avg=13.25, stdev= 5.01, samples=57 lat (usec) : 50=0.52%, 100=2.34%, 250=0.52%, 500=0.13% lat (msec) : 2=3.52%, 4=4.30%, 10=8.59%, 20=9.11%, 50=42.45% lat (msec) : 100=24.09%, 250=4.43% cpu : usr=0.07%, sys=4.89%, ctx=1644, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179291: Sat Sep 5 02:14:08 2026 read: IOPS=13, BW=217KiB/s (223kB/s)(6256KiB/28770msec) clat (usec): min=38, max=176079, avg=39539.30, stdev=25078.94 lat (usec): min=38, max=176081, avg=39540.79, stdev=25078.99 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 63], 10.00th=[ 13566], 20.00th=[ 21103], | 30.00th=[ 26870], 40.00th=[ 31851], 50.00th=[ 36439], 60.00th=[ 43254], | 70.00th=[ 48497], 80.00th=[ 55313], 90.00th=[ 66323], 95.00th=[ 80217], | 99.00th=[130548], 99.50th=[154141], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 63, max= 383, per=26.51%, avg=217.88, stdev=78.62, samples=56 iops : min= 3, max= 23, avg=12.84, stdev= 4.98, samples=56 write: IOPS=13, BW=210KiB/s (215kB/s)(6032KiB/28770msec); 0 zone resets clat (usec): min=1276, max=258333, avg=34461.27, stdev=35551.40 lat (usec): min=1278, max=258336, avg=34463.30, stdev=35551.42 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1729], 10.00th=[ 2474], 20.00th=[ 4752], | 30.00th=[ 9110], 40.00th=[ 15795], 50.00th=[ 25297], 60.00th=[ 32113], | 70.00th=[ 44303], 80.00th=[ 60031], 90.00th=[ 77071], 95.00th=[107480], | 99.00th=[160433], 99.50th=[189793], 99.90th=[258999], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 31, max= 479, per=23.97%, avg=207.14, stdev=83.53, samples=56 iops : min= 1, max= 29, avg=12.16, stdev= 5.27, samples=56 lat (usec) : 50=0.65%, 100=3.12%, 250=0.39%, 750=0.13%, 1000=0.13% lat (msec) : 2=3.78%, 4=4.30%, 10=7.68%, 20=10.55%, 50=41.93% lat (msec) : 100=23.18%, 250=4.04%, 500=0.13% cpu : usr=0.08%, sys=5.19%, ctx=1750, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179292: Sat Sep 5 02:14:08 2026 read: IOPS=12, BW=207KiB/s (212kB/s)(6032KiB/29112msec) clat (usec): min=39, max=180313, avg=46467.99, stdev=34394.79 lat (usec): min=39, max=180315, avg=46469.54, stdev=34394.58 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 64], 10.00th=[ 13698], 20.00th=[ 21890], | 30.00th=[ 27919], 40.00th=[ 33817], 50.00th=[ 39060], 60.00th=[ 44303], | 70.00th=[ 54264], 80.00th=[ 66847], 90.00th=[ 94897], 95.00th=[117965], | 99.00th=[168821], 99.50th=[177210], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 30, max= 416, per=24.95%, avg=205.12, stdev=87.55, samples=57 iops : min= 1, max= 26, avg=12.04, stdev= 5.55, samples=57 write: IOPS=13, BW=215KiB/s (220kB/s)(6256KiB/29112msec); 0 zone resets clat (usec): min=1165, max=159980, avg=29036.89, stdev=29510.87 lat (usec): min=1166, max=159982, avg=29077.49, stdev=29489.59 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1696], 10.00th=[ 2024], 20.00th=[ 3752], | 30.00th=[ 6915], 40.00th=[ 13304], 50.00th=[ 22414], 60.00th=[ 27919], | 70.00th=[ 37487], 80.00th=[ 50070], 90.00th=[ 68682], 95.00th=[ 86508], | 99.00th=[139461], 99.50th=[154141], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 62, max= 510, per=24.83%, avg=214.49, stdev=93.20, samples=57 iops : min= 3, max= 31, avg=12.63, stdev= 5.90, samples=57 lat (usec) : 50=0.52%, 100=3.26%, 250=0.39%, 1000=0.13% lat (msec) : 2=5.21%, 4=5.73%, 10=7.81%, 20=9.90%, 50=40.49% lat (msec) : 100=20.70%, 250=5.86% cpu : usr=0.05%, sys=5.37%, ctx=1700, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=822KiB/s (842kB/s), 197KiB/s-217KiB/s (202kB/s-223kB/s), io=23.4MiB (24.5MB), run=28626-29133msec WRITE: bw=865KiB/s (886kB/s), 210KiB/s-225KiB/s (215kB/s-230kB/s), io=24.6MiB (25.8MB), run=28626-29133msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179285: Sat Sep 5 02:14:20 2026 read: IOPS=9, BW=145KiB/s (149kB/s)(5920KiB/40786msec) clat (msec): min=7, max=274, avg=42.82, stdev=34.62 lat (msec): min=7, max=274, avg=42.82, stdev=34.62 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 62], 90.00th=[ 89], 95.00th=[ 114], | 99.00th=[ 157], 99.50th=[ 236], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 415, per=24.89%, avg=145.37, stdev=82.09, samples=79 iops : min= 1, max= 25, avg= 8.28, stdev= 5.13, samples=79 write: IOPS=9, BW=156KiB/s (160kB/s)(6368KiB/40786msec); 0 zone resets clat (msec): min=15, max=284, avg=62.19, stdev=39.49 lat (msec): min=15, max=284, avg=62.19, stdev=39.49 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 71], 80.00th=[ 87], 90.00th=[ 116], 95.00th=[ 138], | 99.00th=[ 201], 99.50th=[ 249], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 382, per=25.26%, avg=155.11, stdev=79.62, samples=80 iops : min= 1, max= 23, avg= 8.89, stdev= 4.95, samples=80 lat (msec) : 10=0.65%, 20=11.46%, 50=48.57%, 100=28.26%, 250=10.81% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=1.73%, ctx=1181, 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=179286: Sat Sep 5 02:14:20 2026 read: IOPS=8, BW=140KiB/s (143kB/s)(5744KiB/41001msec) clat (msec): min=5, max=262, avg=40.92, stdev=35.45 lat (msec): min=5, max=262, avg=40.92, stdev=35.45 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 31], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 56], 90.00th=[ 85], 95.00th=[ 114], | 99.00th=[ 199], 99.50th=[ 234], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 447, per=24.68%, avg=144.12, stdev=88.67, samples=78 iops : min= 1, max= 27, avg= 8.19, stdev= 5.57, samples=78 write: IOPS=9, BW=160KiB/s (163kB/s)(6544KiB/41001msec); 0 zone resets clat (msec): min=12, max=306, avg=64.21, stdev=42.01 lat (msec): min=12, max=306, avg=64.21, stdev=42.01 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 63], | 70.00th=[ 72], 80.00th=[ 90], 90.00th=[ 114], 95.00th=[ 142], | 99.00th=[ 222], 99.50th=[ 288], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 31, max= 384, per=25.83%, avg=158.62, stdev=82.20, samples=81 iops : min= 1, max= 24, avg= 9.12, stdev= 5.16, samples=81 lat (msec) : 10=1.17%, 20=12.63%, 50=46.74%, 100=28.39%, 250=10.55% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.68%, ctx=1133, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179287: Sat Sep 5 02:14:20 2026 read: IOPS=9, BW=153KiB/s (157kB/s)(6256KiB/40877msec) clat (msec): min=7, max=259, avg=43.98, stdev=35.33 lat (msec): min=7, max=259, avg=43.98, stdev=35.33 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 62], 90.00th=[ 90], 95.00th=[ 116], | 99.00th=[ 180], 99.50th=[ 211], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 31, max= 430, per=26.46%, avg=154.52, stdev=84.08, samples=80 iops : min= 1, max= 26, avg= 8.86, stdev= 5.27, samples=80 write: IOPS=9, BW=148KiB/s (151kB/s)(6032KiB/40877msec); 0 zone resets clat (msec): min=14, max=248, avg=62.21, stdev=36.37 lat (msec): min=14, max=248, avg=62.21, stdev=36.37 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 47], 50.00th=[ 53], 60.00th=[ 62], | 70.00th=[ 72], 80.00th=[ 90], 90.00th=[ 113], 95.00th=[ 134], | 99.00th=[ 178], 99.50th=[ 236], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 31, max= 383, per=24.01%, avg=147.41, stdev=73.06, samples=81 iops : min= 1, max= 23, avg= 8.41, stdev= 4.57, samples=81 lat (msec) : 10=1.04%, 20=10.29%, 50=49.09%, 100=28.39%, 250=11.07% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=1.63%, ctx=1094, 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=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=179288: Sat Sep 5 02:14:20 2026 read: IOPS=9, BW=149KiB/s (152kB/s)(6032KiB/40551msec) clat (msec): min=8, max=217, avg=42.27, stdev=30.78 lat (msec): min=8, max=217, avg=42.27, stdev=30.78 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 47], 80.00th=[ 65], 90.00th=[ 89], 95.00th=[ 109], | 99.00th=[ 140], 99.50th=[ 153], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 31, max= 415, per=25.91%, avg=151.33, stdev=78.43, samples=78 iops : min= 1, max= 25, avg= 8.65, stdev= 4.87, samples=78 write: IOPS=9, BW=154KiB/s (158kB/s)(6256KiB/40551msec); 0 zone resets clat (msec): min=15, max=293, avg=62.59, stdev=39.89 lat (msec): min=15, max=293, avg=62.59, stdev=39.89 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 53], 60.00th=[ 58], | 70.00th=[ 70], 80.00th=[ 86], 90.00th=[ 115], 95.00th=[ 140], | 99.00th=[ 211], 99.50th=[ 288], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 542, per=25.38%, avg=155.85, stdev=79.24, samples=79 iops : min= 1, max= 33, avg= 8.94, stdev= 4.94, samples=79 lat (msec) : 10=0.52%, 20=11.98%, 50=45.57%, 100=31.64%, 250=10.03% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=1.68%, ctx=1088, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=584KiB/s (598kB/s), 140KiB/s-153KiB/s (143kB/s-157kB/s), io=23.4MiB (24.5MB), run=40551-41001msec WRITE: bw=615KiB/s (629kB/s), 148KiB/s-160KiB/s (151kB/s-163kB/s), io=24.6MiB (25.8MB), run=40551-41001msec 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=179303: Sat Sep 5 02:14:35 2026 read: IOPS=1, BW=1844KiB/s (1888kB/s)(7168KiB/3888msec) clat (usec): min=477, max=304403, avg=146066.89, stdev=123430.63 lat (usec): min=478, max=304404, avg=146068.73, stdev=123430.83 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 529], | 30.00th=[ 76022], 40.00th=[ 76022], 50.00th=[160433], 60.00th=[212861], | 70.00th=[212861], 80.00th=[265290], 90.00th=[304088], 95.00th=[304088], | 99.00th=[304088], 99.50th=[304088], 99.90th=[304088], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 1556, max= 4096, per=73.02%, avg=2921.50, stdev=1319.40, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1317KiB/s (1348kB/s)(5120KiB/3888msec); 0 zone resets clat (msec): min=247, max=818, avg=539.22, stdev=250.83 lat (msec): min=247, max=818, avg=539.32, stdev=250.83 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 785], 80.00th=[ 785], 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= 2003, max= 4055, per=48.23%, avg=2702.00, stdev=1171.95, 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) : 100=8.33%, 250=25.00%, 500=33.33%, 1000=16.67% cpu : usr=0.00%, sys=10.24%, ctx=148, 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=179304: Sat Sep 5 02:14:35 2026 read: IOPS=0, BW=400KiB/s (410kB/s)(2048KiB/5118msec) clat (msec): min=247, max=973, avg=610.24, stdev=513.29 lat (msec): min=247, max=973, avg=610.24, stdev=513.29 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 978], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 1454, max= 2048, per=43.76%, avg=1751.00, stdev=420.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=2001KiB/s (2049kB/s)(10.0MiB/5118msec); 0 zone resets clat (msec): min=136, max=918, avg=369.90, stdev=295.94 lat (msec): min=136, max=919, avg=370.25, stdev=295.77 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 182], | 30.00th=[ 197], 40.00th=[ 207], 50.00th=[ 220], 60.00th=[ 241], | 70.00th=[ 275], 80.00th=[ 422], 90.00th=[ 911], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 1885, max= 4079, per=57.33%, avg=3211.60, stdev=1138.36, samples=5 iops : min= 1, max= 3, avg= 2.40, stdev= 0.89, samples=5 lat (msec) : 250=58.33%, 500=16.67%, 1000=25.00% cpu : usr=0.00%, sys=11.33%, ctx=131, 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=179305: Sat Sep 5 02:14:35 2026 read: IOPS=1, BW=1537KiB/s (1574kB/s)(6144KiB/3998msec) clat (usec): min=538, max=299696, avg=143454.84, stdev=126626.20 lat (usec): min=539, max=299697, avg=143456.49, stdev=126626.33 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 1418], | 30.00th=[ 1418], 40.00th=[109577], 50.00th=[109577], 60.00th=[202376], | 70.00th=[246416], 80.00th=[246416], 90.00th=[299893], 95.00th=[299893], | 99.00th=[299893], 99.50th=[299893], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 1885, max= 4096, per=62.50%, avg=2500.75, stdev=1065.18, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1537KiB/s (1574kB/s)(6144KiB/3998msec); 0 zone resets clat (msec): min=300, max=812, avg=517.71, stdev=223.26 lat (msec): min=301, max=812, avg=517.91, stdev=223.17 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 592], | 70.00th=[ 726], 80.00th=[ 726], 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= 1503, max= 4096, per=43.06%, avg=2412.50, stdev=1149.19, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=9.83%, ctx=197, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179306: Sat Sep 5 02:14:35 2026 read: IOPS=1, BW=1374KiB/s (1407kB/s)(5120KiB/3726msec) clat (usec): min=487, max=233089, avg=113075.49, stdev=115699.74 lat (usec): min=489, max=233091, avg=113077.39, stdev=115700.23 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 490], | 30.00th=[ 2040], 40.00th=[ 2040], 50.00th=[ 99091], 60.00th=[ 99091], | 70.00th=[231736], 80.00th=[231736], 90.00th=[233833], 95.00th=[233833], | 99.00th=[233833], 99.50th=[233833], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 2019, max= 6144, per=100.00%, avg=4081.50, stdev=2916.82, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1924KiB/s (1970kB/s)(7168KiB/3726msec); 0 zone resets clat (msec): min=233, max=640, avg=430.10, stdev=135.11 lat (msec): min=233, max=640, avg=430.21, stdev=135.10 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 426], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 514], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1508, max= 4007, per=50.45%, avg=2826.25, stdev=1248.49, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33% lat (msec) : 4=8.33%, 100=8.33%, 250=25.00%, 500=25.00%, 750=25.00% cpu : usr=0.00%, sys=12.62%, ctx=166, 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=4002KiB/s (4098kB/s), 400KiB/s-1844KiB/s (410kB/s-1888kB/s), io=20.0MiB (20.0MB), run=3726-5118msec WRITE: bw=5602KiB/s (5737kB/s), 1317KiB/s-2001KiB/s (1348kB/s-2049kB/s), io=28.0MiB (29.4MB), run=3726-5118msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179308: Sat Sep 5 02:14:35 2026 read: IOPS=1, BW=1404KiB/s (1438kB/s)(7168KiB/5105msec) clat (msec): min=163, max=1398, avg=407.12, stdev=443.24 lat (msec): min=163, max=1398, avg=407.12, stdev=443.24 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 186], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 228], 60.00th=[ 321], | 70.00th=[ 321], 80.00th=[ 363], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 1467, max= 4063, per=76.46%, avg=2910.25, stdev=1352.05, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 write: IOPS=0, BW=1003KiB/s (1027kB/s)(5120KiB/5105msec); 0 zone resets clat (msec): min=114, max=828, avg=360.36, stdev=274.27 lat (msec): min=114, max=828, avg=361.27, stdev=274.28 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1992, max= 4096, per=63.55%, avg=3386.33, stdev=1207.59, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 lat (msec) : 250=50.00%, 500=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=3.59%, ctx=75, 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=179309: Sat Sep 5 02:14:35 2026 read: IOPS=0, BW=398KiB/s (407kB/s)(2048KiB/5147msec) clat (msec): min=424, max=606, avg=515.44, stdev=128.16 lat (msec): min=424, max=606, avg=515.44, stdev=128.16 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 609], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 2035, max= 2035, per=53.47%, avg=2035.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1990KiB/s (2037kB/s)(10.0MiB/5147msec); 0 zone resets clat (msec): min=106, max=1075, avg=367.45, stdev=286.29 lat (msec): min=106, max=1075, avg=367.54, stdev=286.30 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 167], | 30.00th=[ 176], 40.00th=[ 190], 50.00th=[ 275], 60.00th=[ 309], | 70.00th=[ 397], 80.00th=[ 405], 90.00th=[ 575], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 2023, max= 6144, per=60.85%, avg=3242.60, stdev=1829.70, samples=5 iops : min= 1, max= 6, avg= 2.40, stdev= 2.19, samples=5 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=4.88%, ctx=122, 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=179310: Sat Sep 5 02:14:35 2026 read: IOPS=1, BW=1204KiB/s (1233kB/s)(6144KiB/5104msec) clat (msec): min=101, max=605, avg=355.33, stdev=198.56 lat (msec): min=101, max=605, avg=355.33, stdev=198.56 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 418], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1992, max= 2048, per=53.23%, avg=2025.80, stdev=20.95, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=1, BW=1204KiB/s (1233kB/s)(6144KiB/5104msec); 0 zone resets clat (msec): min=133, max=1199, avg=478.45, stdev=462.84 lat (msec): min=133, max=1199, avg=478.55, stdev=462.83 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 288], | 70.00th=[ 927], 80.00th=[ 927], 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= 2023, max= 4096, per=57.33%, avg=3055.25, stdev=1187.37, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=3.37%, ctx=74, 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=179311: Sat Sep 5 02:14:35 2026 read: IOPS=0, BW=952KiB/s (975kB/s)(5120KiB/5380msec) clat (msec): min=70, max=624, avg=294.15, stdev=232.00 lat (msec): min=70, max=624, avg=294.15, stdev=232.00 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 71], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 192], 60.00th=[ 192], | 70.00th=[ 443], 80.00th=[ 443], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 2035, max= 6144, per=100.00%, avg=4089.50, stdev=2905.50, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1332KiB/s (1364kB/s)(7168KiB/5380msec); 0 zone resets clat (msec): min=212, max=1185, avg=495.17, stdev=345.34 lat (msec): min=212, max=1186, avg=495.35, stdev=345.26 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 218], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 531], 60.00th=[ 531], | 70.00th=[ 531], 80.00th=[ 567], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 2023, max= 4079, per=45.78%, avg=2439.80, stdev=916.35, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=8.33%, 750=33.33%, 2000=8.33% cpu : usr=0.00%, sys=4.39%, ctx=113, 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=3807KiB/s (3898kB/s), 398KiB/s-1404KiB/s (407kB/s-1438kB/s), io=20.0MiB (20.0MB), run=5104-5380msec WRITE: bw=5329KiB/s (5457kB/s), 1003KiB/s-1990KiB/s (1027kB/s-2037kB/s), io=28.0MiB (29.4MB), run=5104-5380msec 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=179318: Sat Sep 5 02:14:48 2026 read: IOPS=1, BW=4444KiB/s (4551kB/s)(12.0MiB/2765msec) clat (msec): min=554, max=1027, avg=838.74, stdev=250.53 lat (msec): min=554, max=1027, avg=838.74, stdev=250.53 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 8078, max= 8159, per=100.00%, avg=8118.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=11.61%, ctx=463, 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=179319: Sat Sep 5 02:14:48 2026 read: IOPS=0, BW=1715KiB/s (1756kB/s)(4096KiB/2389msec) clat (nsec): min=976150k, max=976150k, avg=976150386.00, stdev= 0.00 lat (nsec): min=976152k, max=976152k, avg=976152476.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3429KiB/s (3511kB/s)(8192KiB/2389msec); 0 zone resets clat (msec): min=536, max=594, avg=565.57, stdev=41.01 lat (msec): min=537, max=594, avg=566.32, stdev=40.47 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 535], | 30.00th=[ 535], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 592], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 7831, max= 7831, per=72.46%, avg=7831.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.21%, sys=6.83%, ctx=113, 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=179320: Sat Sep 5 02:14:48 2026 write: IOPS=2, BW=11.1MiB/s (11.6MB/s)(12.0MiB/1084msec); 0 zone resets clat (msec): min=255, max=418, avg=320.89, stdev=86.44 lat (msec): min=255, max=419, avg=321.24, stdev=86.51 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7861, max= 8062, per=73.67%, avg=7961.50, stdev=142.13, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=7.94%, ctx=71, 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=179321: Sat Sep 5 02:14:48 2026 write: IOPS=0, BW=4053KiB/s (4150kB/s)(12.0MiB/3032msec); 0 zone resets clat (msec): min=497, max=1917, avg=979.85, stdev=811.98 lat (msec): min=497, max=1917, avg=981.57, stdev=810.86 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 1921], 80.00th=[ 1921], 90.00th=[ 1921], 95.00th=[ 1921], | 99.00th=[ 1921], 99.50th=[ 1921], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 8062, max= 8078, per=74.67%, avg=8070.00, stdev=11.31, 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=3.07%, ctx=57, 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=5925KiB/s (6068kB/s), 1715KiB/s-4444KiB/s (1756kB/s-4551kB/s), io=16.0MiB (16.8MB), run=2389-2765msec WRITE: bw=10.6MiB/s (11.1MB/s), 3429KiB/s-11.1MiB/s (3511kB/s-11.6MB/s), io=32.0MiB (33.6MB), run=1084-3032msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179322: Sat Sep 5 02:14:49 2026 read: IOPS=0, BW=3502KiB/s (3586kB/s)(12.0MiB/3509msec) clat (msec): min=195, max=2104, avg=997.55, stdev=990.78 lat (msec): min=195, max=2104, avg=997.55, stdev=990.79 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 2106], 80.00th=[ 2106], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] 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) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.28%, ctx=52, 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=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=179323: Sat Sep 5 02:14:49 2026 read: IOPS=0, BW=1353KiB/s (1385kB/s)(4096KiB/3028msec) clat (nsec): min=1171.7M, max=1171.7M, avg=1171732714.00, stdev= 0.00 lat (nsec): min=1171.7M, max=1171.7M, avg=1171735506.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1167], 5.00th=[ 1167], 10.00th=[ 1167], 20.00th=[ 1167], | 30.00th=[ 1167], 40.00th=[ 1167], 50.00th=[ 1167], 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= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2705KiB/s (2770kB/s)(8192KiB/3028msec); 0 zone resets clat (msec): min=748, max=917, avg=833.15, stdev=119.04 lat (msec): min=752, max=917, avg=834.97, stdev=116.97 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 919], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 8110, max= 8110, per=80.17%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=2.28%, ctx=39, 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=179324: Sat Sep 5 02:14:49 2026 write: IOPS=0, BW=3794KiB/s (3885kB/s)(12.0MiB/3239msec); 0 zone resets clat (msec): min=571, max=1559, avg=912.86, stdev=560.49 lat (msec): min=571, max=1560, avg=913.24, stdev=560.46 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8110, max= 8159, per=80.41%, 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%, 2000=33.33% cpu : usr=0.09%, sys=4.14%, ctx=85, 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=179325: Sat Sep 5 02:14:49 2026 write: IOPS=1, BW=5375KiB/s (5504kB/s)(12.0MiB/2286msec); 0 zone resets clat (msec): min=225, max=1758, avg=739.17, stdev=882.34 lat (msec): min=225, max=1758, avg=739.53, stdev=882.34 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 234], 50.00th=[ 234], 60.00th=[ 234], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min=12840, max=12840, per=100.00%, avg=12840.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.02%, ctx=45, 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=4669KiB/s (4781kB/s), 1353KiB/s-3502KiB/s (1385kB/s-3586kB/s), io=16.0MiB (16.8MB), run=3028-3509msec WRITE: bw=9.88MiB/s (10.4MB/s), 2705KiB/s-5375KiB/s (2770kB/s-5504kB/s), io=32.0MiB (33.6MB), run=2286-3239msec