== sanity test 398b: DIO and buffer IO race ============== 23:14:00 (1787714040) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.38129 s, 7.9 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=179086: Tue Aug 25 23:16:18 2026 read: IOPS=12, BW=51.3KiB/s (52.6kB/s)(5992KiB/116754msec) clat (usec): min=33, max=1014.8k, avg=43536.37, stdev=36417.46 lat (usec): min=33, max=1014.8k, avg=43537.79, stdev=36417.26 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10028], 10.00th=[ 15926], | 20.00th=[ 21365], 30.00th=[ 26608], 40.00th=[ 32113], | 50.00th=[ 38011], 60.00th=[ 44303], 70.00th=[ 53216], | 80.00th=[ 62653], 90.00th=[ 77071], 95.00th=[ 90702], | 99.00th=[ 126354], 99.50th=[ 149947], 99.90th=[ 202376], | 99.95th=[1010828], 99.99th=[1010828] bw ( KiB/s): min= 8, max= 103, per=24.82%, avg=50.88, stdev=19.84, samples=229 iops : min= 2, max= 25, avg=12.06, stdev= 4.97, samples=229 write: IOPS=13, BW=53.9KiB/s (55.2kB/s)(6296KiB/116754msec); 0 zone resets clat (usec): min=962, max=188442, avg=32407.46, stdev=33101.28 lat (usec): min=964, max=188444, avg=32409.28, stdev=33101.11 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1254], 10.00th=[ 1680], 20.00th=[ 3851], | 30.00th=[ 6915], 40.00th=[ 14484], 50.00th=[ 22676], 60.00th=[ 31327], | 70.00th=[ 42206], 80.00th=[ 56886], 90.00th=[ 79168], 95.00th=[ 98042], | 99.00th=[145753], 99.50th=[152044], 99.90th=[179307], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 7, max= 151, per=25.04%, avg=53.84, stdev=23.43, samples=228 iops : min= 1, max= 37, avg=12.79, stdev= 5.87, samples=228 lat (usec) : 50=0.29%, 100=1.37%, 250=0.23%, 500=0.07%, 1000=0.07% lat (msec) : 2=6.12%, 4=4.39%, 10=8.11%, 20=11.33%, 50=39.81% lat (msec) : 100=24.28%, 250=3.91%, 2000=0.03% cpu : usr=0.08%, sys=5.54%, ctx=6476, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179087: Tue Aug 25 23:16:18 2026 read: IOPS=13, BW=52.1KiB/s (53.3kB/s)(5940KiB/114109msec) clat (usec): min=49, max=288119, avg=42001.26, stdev=28240.70 lat (usec): min=50, max=288120, avg=42008.49, stdev=28243.15 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 7963], 10.00th=[ 15533], 20.00th=[ 21627], | 30.00th=[ 26608], 40.00th=[ 31851], 50.00th=[ 36963], 60.00th=[ 42206], | 70.00th=[ 50070], 80.00th=[ 59507], 90.00th=[ 73925], 95.00th=[ 89654], | 99.00th=[139461], 99.50th=[156238], 99.90th=[270533], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 6, max= 103, per=25.25%, avg=51.76, stdev=19.08, samples=224 iops : min= 1, max= 25, avg=12.27, stdev= 4.79, samples=224 write: IOPS=13, BW=55.6KiB/s (56.0kB/s)(6348KiB/114109msec); 0 zone resets clat (usec): min=971, max=919179, avg=32219.66, stdev=40132.98 lat (usec): min=971, max=919181, avg=32222.28, stdev=40132.48 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1221], 10.00th=[ 1631], 20.00th=[ 3523], | 30.00th=[ 6390], 40.00th=[ 12780], 50.00th=[ 21890], 60.00th=[ 30540], | 70.00th=[ 39584], 80.00th=[ 54789], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[154141], 99.50th=[173016], 99.90th=[212861], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 6, max= 142, per=25.69%, avg=55.22, stdev=23.61, samples=224 iops : min= 1, max= 35, avg=13.14, stdev= 5.92, samples=224 lat (usec) : 50=0.07%, 100=1.89%, 250=0.23%, 500=0.03%, 1000=0.10% lat (msec) : 2=6.02%, 4=5.24%, 10=7.91%, 20=11.52%, 50=41.02% lat (msec) : 100=21.97%, 250=3.87%, 500=0.10%, 1000=0.03% cpu : usr=0.09%, sys=5.53%, ctx=6466, 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=179088: Tue Aug 25 23:16:18 2026 read: IOPS=13, BW=53.7KiB/s (55.0kB/s)(6028KiB/112203msec) clat (usec): min=47, max=207997, avg=41369.53, stdev=25749.49 lat (usec): min=48, max=207998, avg=41370.77, stdev=25749.53 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 11207], 10.00th=[ 16319], 20.00th=[ 21365], | 30.00th=[ 25560], 40.00th=[ 30540], 50.00th=[ 36963], 60.00th=[ 42730], | 70.00th=[ 49546], 80.00th=[ 59507], 90.00th=[ 73925], 95.00th=[ 88605], | 99.00th=[124257], 99.50th=[158335], 99.90th=[185598], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 15, max= 127, per=26.20%, avg=53.71, stdev=19.38, samples=219 iops : min= 3, max= 31, avg=12.76, stdev= 4.85, samples=219 write: IOPS=13, BW=55.8KiB/s (57.1kB/s)(6260KiB/112203msec); 0 zone resets clat (usec): min=1004, max=905357, avg=31497.03, stdev=39152.56 lat (usec): min=1005, max=905360, avg=31501.03, stdev=39151.55 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1254], 10.00th=[ 1696], 20.00th=[ 3261], | 30.00th=[ 6194], 40.00th=[ 12256], 50.00th=[ 21103], 60.00th=[ 29754], | 70.00th=[ 40633], 80.00th=[ 54789], 90.00th=[ 76022], 95.00th=[ 96994], | 99.00th=[145753], 99.50th=[160433], 99.90th=[183501], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 7, max= 149, per=25.96%, avg=55.81, stdev=23.60, samples=219 iops : min= 1, max= 37, avg=13.29, stdev= 5.91, samples=219 lat (usec) : 50=0.13%, 100=1.56%, 250=0.13%, 500=0.07%, 750=0.03% lat (msec) : 2=6.41%, 4=5.05%, 10=7.65%, 20=11.52%, 50=41.44% lat (msec) : 100=22.36%, 250=3.61%, 1000=0.03% cpu : usr=0.08%, sys=5.61%, ctx=6514, 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=179089: Tue Aug 25 23:16:18 2026 read: IOPS=13, BW=52.9KiB/s (54.1kB/s)(6052KiB/114468msec) clat (usec): min=38, max=959978, avg=41448.16, stdev=35111.74 lat (usec): min=38, max=959979, avg=41450.09, stdev=35111.65 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 3556], 10.00th=[ 15533], 20.00th=[ 21103], | 30.00th=[ 25560], 40.00th=[ 29754], 50.00th=[ 35390], 60.00th=[ 41157], | 70.00th=[ 49021], 80.00th=[ 60031], 90.00th=[ 73925], 95.00th=[ 91751], | 99.00th=[125305], 99.50th=[143655], 99.90th=[223347], 99.95th=[960496], | 99.99th=[960496] bw ( KiB/s): min= 6, max= 127, per=25.64%, avg=52.56, stdev=20.46, samples=225 iops : min= 1, max= 31, avg=12.47, stdev= 5.14, samples=225 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(6236KiB/114468msec); 0 zone resets clat (usec): min=808, max=353229, avg=32832.98, stdev=33873.07 lat (usec): min=808, max=353232, avg=32836.40, stdev=33871.80 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1237], 10.00th=[ 1565], 20.00th=[ 3392], | 30.00th=[ 7111], 40.00th=[ 15008], 50.00th=[ 23462], 60.00th=[ 32375], | 70.00th=[ 42206], 80.00th=[ 58459], 90.00th=[ 81265], 95.00th=[102237], | 99.00th=[139461], 99.50th=[147850], 99.90th=[179307], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 15, max= 128, per=25.17%, avg=54.11, stdev=20.24, samples=225 iops : min= 3, max= 32, avg=12.87, stdev= 5.09, samples=225 lat (usec) : 50=0.20%, 100=1.89%, 250=0.26%, 750=0.03%, 1000=0.20% lat (msec) : 2=6.18%, 4=5.18%, 10=6.18%, 20=12.08%, 50=41.31% lat (msec) : 100=22.33%, 250=4.10%, 500=0.03%, 1000=0.03% cpu : usr=0.09%, sys=5.43%, ctx=6519, 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=206KiB/s (211kB/s), 51.3KiB/s-53.7KiB/s (52.6kB/s-55.0kB/s), io=23.4MiB (24.6MB), run=112203-116754msec WRITE: bw=215KiB/s (220kB/s), 53.9KiB/s-55.8KiB/s (55.2kB/s-57.1kB/s), io=24.6MiB (25.7MB), run=112203-116754msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179082: Tue Aug 25 23:16:53 2026 read: IOPS=9, BW=39.6KiB/s (40.5kB/s)(5992KiB/151373msec) clat (msec): min=5, max=1014, avg=39.21, stdev=44.11 lat (msec): min=5, max=1014, avg=39.21, stdev=44.11 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 56], 90.00th=[ 91], 95.00th=[ 116], | 99.00th=[ 174], 99.50th=[ 205], 99.90th=[ 405], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 136, per=25.26%, avg=39.90, stdev=27.05, samples=292 iops : min= 1, max= 34, avg= 9.33, stdev= 6.82, samples=292 write: IOPS=10, BW=41.6KiB/s (42.6kB/s)(6296KiB/151373msec); 0 zone resets clat (msec): min=11, max=261, avg=58.51, stdev=40.31 lat (msec): min=11, max=261, avg=58.51, stdev=40.31 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 54], | 70.00th=[ 69], 80.00th=[ 89], 90.00th=[ 116], 95.00th=[ 142], | 99.00th=[ 186], 99.50th=[ 222], 99.90th=[ 259], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 7, max= 119, per=25.23%, avg=41.63, stdev=25.98, samples=294 iops : min= 1, max= 29, avg= 9.76, stdev= 6.57, samples=294 lat (msec) : 10=3.03%, 20=17.35%, 50=46.94%, 100=21.00%, 250=11.46% lat (msec) : 500=0.20%, 2000=0.03% cpu : usr=0.06%, sys=1.92%, ctx=4851, 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=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=179083: Tue Aug 25 23:16:53 2026 read: IOPS=9, BW=39.2KiB/s (40.1kB/s)(5940KiB/151541msec) clat (msec): min=5, max=947, avg=38.58, stdev=42.72 lat (msec): min=5, max=947, avg=38.59, stdev=42.72 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 56], 90.00th=[ 88], 95.00th=[ 112], | 99.00th=[ 171], 99.50th=[ 199], 99.90th=[ 414], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 7, max= 134, per=25.30%, avg=39.98, stdev=28.20, samples=290 iops : min= 1, max= 33, avg= 9.35, stdev= 7.11, samples=290 write: IOPS=10, BW=41.9KiB/s (42.9kB/s)(6348KiB/151541msec); 0 zone resets clat (msec): min=10, max=305, avg=59.04, stdev=41.47 lat (msec): min=10, max=305, avg=59.05, stdev=41.47 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 68], 80.00th=[ 88], 90.00th=[ 114], 95.00th=[ 144], | 99.00th=[ 213], 99.50th=[ 232], 99.90th=[ 271], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 7, max= 120, per=25.47%, avg=42.02, stdev=25.58, samples=295 iops : min= 1, max= 30, avg= 9.86, stdev= 6.47, samples=295 lat (msec) : 10=2.80%, 20=18.78%, 50=44.60%, 100=22.88%, 250=10.71% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.07%, sys=1.85%, ctx=4729, 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=179084: Tue Aug 25 23:16:53 2026 read: IOPS=9, BW=39.7KiB/s (40.7kB/s)(6028KiB/151702msec) clat (msec): min=5, max=273, avg=39.99, stdev=36.68 lat (msec): min=5, max=273, avg=39.99, stdev=36.68 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 60], 90.00th=[ 94], 95.00th=[ 120], | 99.00th=[ 167], 99.50th=[ 211], 99.90th=[ 239], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 7, max= 135, per=25.07%, avg=39.62, stdev=26.43, samples=296 iops : min= 1, max= 33, avg= 9.26, stdev= 6.66, samples=296 write: IOPS=10, BW=41.3KiB/s (42.3kB/s)(6260KiB/151702msec); 0 zone resets clat (msec): min=12, max=1017, avg=58.06, stdev=47.63 lat (msec): min=12, max=1017, avg=58.07, stdev=47.63 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 52], | 70.00th=[ 66], 80.00th=[ 84], 90.00th=[ 116], 95.00th=[ 144], | 99.00th=[ 203], 99.50th=[ 243], 99.90th=[ 317], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 134, per=25.03%, avg=41.29, stdev=26.23, samples=295 iops : min= 1, max= 33, avg= 9.68, stdev= 6.63, samples=295 lat (msec) : 10=2.83%, 20=17.68%, 50=47.14%, 100=21.26%, 250=10.87% lat (msec) : 500=0.20%, 2000=0.03% cpu : usr=0.07%, sys=1.82%, ctx=4734, 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=179085: Tue Aug 25 23:16:53 2026 read: IOPS=9, BW=39.8KiB/s (40.8kB/s)(6052KiB/151939msec) clat (msec): min=4, max=247, avg=39.47, stdev=36.28 lat (msec): min=4, max=247, avg=39.48, stdev=36.28 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 42], 80.00th=[ 59], 90.00th=[ 90], 95.00th=[ 118], | 99.00th=[ 171], 99.50th=[ 205], 99.90th=[ 239], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 7, max= 149, per=25.70%, avg=40.60, stdev=26.77, samples=288 iops : min= 1, max= 37, avg= 9.50, stdev= 6.74, samples=288 write: IOPS=10, BW=41.0KiB/s (42.0kB/s)(6236KiB/151939msec); 0 zone resets clat (msec): min=10, max=953, avg=58.80, stdev=46.61 lat (msec): min=10, max=953, avg=58.81, stdev=46.61 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 54], | 70.00th=[ 68], 80.00th=[ 89], 90.00th=[ 116], 95.00th=[ 146], | 99.00th=[ 199], 99.50th=[ 224], 99.90th=[ 279], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 120, per=24.54%, avg=40.50, stdev=25.89, samples=298 iops : min= 1, max= 30, avg= 9.48, stdev= 6.55, samples=298 lat (msec) : 10=3.29%, 20=17.84%, 50=45.08%, 100=22.56%, 250=11.13% lat (msec) : 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=1.87%, ctx=4848, 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=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=158KiB/s (162kB/s), 39.2KiB/s-39.8KiB/s (40.1kB/s-40.8kB/s), io=23.4MiB (24.6MB), run=151373-151939msec WRITE: bw=165KiB/s (169kB/s), 41.0KiB/s-41.9KiB/s (42.0kB/s-42.9kB/s), io=24.6MiB (25.7MB), run=151373-151939msec 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=179129: Tue Aug 25 23:17:34 2026 read: IOPS=12, BW=194KiB/s (199kB/s)(5920KiB/30501msec) clat (usec): min=49, max=170095, avg=43419.76, stdev=28997.18 lat (usec): min=50, max=170096, avg=43420.87, stdev=28997.19 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 70], 10.00th=[ 545], 20.00th=[ 21890], | 30.00th=[ 27657], 40.00th=[ 32375], 50.00th=[ 37487], 60.00th=[ 45876], | 70.00th=[ 54789], 80.00th=[ 64226], 90.00th=[ 79168], 95.00th=[ 94897], | 99.00th=[139461], 99.50th=[149947], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 31, max= 384, per=24.63%, avg=193.35, stdev=77.02, samples=60 iops : min= 1, max= 24, avg=11.35, stdev= 4.86, samples=60 write: IOPS=13, BW=209KiB/s (214kB/s)(6368KiB/30501msec); 0 zone resets clat (usec): min=1594, max=188155, avg=35235.91, stdev=33739.48 lat (usec): min=1596, max=188158, avg=35242.50, stdev=33740.74 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2180], 10.00th=[ 3523], 20.00th=[ 6063], | 30.00th=[ 9896], 40.00th=[ 17433], 50.00th=[ 25822], 60.00th=[ 33817], | 70.00th=[ 46400], 80.00th=[ 60556], 90.00th=[ 81265], 95.00th=[ 98042], | 99.00th=[166724], 99.50th=[181404], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 31, max= 477, per=25.65%, avg=211.88, stdev=86.86, samples=59 iops : min= 1, max= 29, avg=12.51, stdev= 5.48, samples=59 lat (usec) : 50=0.13%, 100=3.91%, 250=0.65%, 750=0.26%, 1000=0.26% lat (msec) : 2=1.95%, 4=4.30%, 10=9.77%, 20=8.33%, 50=39.32% lat (msec) : 100=26.56%, 250=4.56% cpu : usr=0.06%, sys=6.40%, ctx=1787, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179130: Tue Aug 25 23:17:34 2026 read: IOPS=12, BW=195KiB/s (200kB/s)(5744KiB/29420msec) clat (usec): min=41, max=162522, avg=44121.04, stdev=28041.78 lat (usec): min=41, max=162524, avg=44122.12, stdev=28041.85 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 70], 10.00th=[ 10552], 20.00th=[ 22676], | 30.00th=[ 29230], 40.00th=[ 34866], 50.00th=[ 40633], 60.00th=[ 47449], | 70.00th=[ 54264], 80.00th=[ 63701], 90.00th=[ 80217], 95.00th=[ 96994], | 99.00th=[129500], 99.50th=[130548], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 31, max= 416, per=25.35%, avg=199.02, stdev=82.46, samples=57 iops : min= 1, max= 26, avg=11.72, stdev= 5.22, samples=57 write: IOPS=13, BW=222KiB/s (228kB/s)(6544KiB/29420msec); 0 zone resets clat (usec): min=1596, max=247142, avg=32725.33, stdev=31548.20 lat (usec): min=1598, max=247144, avg=32731.66, stdev=31546.82 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2606], 10.00th=[ 3556], 20.00th=[ 5538], | 30.00th=[ 9765], 40.00th=[ 17171], 50.00th=[ 24511], 60.00th=[ 34341], | 70.00th=[ 42730], 80.00th=[ 52167], 90.00th=[ 73925], 95.00th=[ 92799], | 99.00th=[131597], 99.50th=[162530], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 62, max= 568, per=26.84%, avg=221.72, stdev=93.60, samples=58 iops : min= 3, max= 35, avg=13.14, stdev= 5.90, samples=58 lat (usec) : 50=0.26%, 100=3.12%, 250=0.78%, 500=0.26%, 750=0.13% lat (msec) : 2=1.43%, 4=5.21%, 10=9.64%, 20=10.03%, 50=40.10% lat (msec) : 100=25.13%, 250=3.91% cpu : usr=0.08%, sys=6.58%, ctx=1737, 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=179131: Tue Aug 25 23:17:34 2026 read: IOPS=12, BW=207KiB/s (211kB/s)(6256KiB/30292msec) clat (usec): min=41, max=218906, avg=42882.99, stdev=30483.08 lat (usec): min=42, max=218907, avg=42884.13, stdev=30483.10 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 69], 10.00th=[ 182], 20.00th=[ 20841], | 30.00th=[ 27395], 40.00th=[ 32375], 50.00th=[ 36439], 60.00th=[ 42730], | 70.00th=[ 52691], 80.00th=[ 64226], 90.00th=[ 80217], 95.00th=[100140], | 99.00th=[137364], 99.50th=[179307], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 55, max= 413, per=26.33%, avg=206.71, stdev=85.10, samples=59 iops : min= 3, max= 25, avg=12.19, stdev= 5.40, samples=59 write: IOPS=12, BW=199KiB/s (204kB/s)(6032KiB/30292msec); 0 zone resets clat (usec): min=1457, max=174026, avg=35106.40, stdev=31126.44 lat (usec): min=1459, max=174028, avg=35108.99, stdev=31126.30 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2311], 10.00th=[ 3687], 20.00th=[ 6718], | 30.00th=[ 10683], 40.00th=[ 18744], 50.00th=[ 26870], 60.00th=[ 35914], | 70.00th=[ 46400], 80.00th=[ 60556], 90.00th=[ 81265], 95.00th=[ 95945], | 99.00th=[128451], 99.50th=[132645], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 63, max= 378, per=23.78%, avg=196.46, stdev=76.56, samples=59 iops : min= 3, max= 23, avg=11.54, stdev= 4.78, samples=59 lat (usec) : 50=0.13%, 100=4.43%, 250=0.78%, 500=0.13%, 750=0.26% lat (msec) : 2=1.69%, 4=3.65%, 10=9.11%, 20=8.85%, 50=41.41% lat (msec) : 100=24.74%, 250=4.82% cpu : usr=0.05%, sys=6.16%, ctx=1789, 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=179132: Tue Aug 25 23:17:34 2026 read: IOPS=13, BW=209KiB/s (214kB/s)(6032KiB/28841msec) clat (usec): min=47, max=257711, avg=41526.41, stdev=28987.86 lat (usec): min=48, max=257712, avg=41527.89, stdev=28987.80 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 65], 10.00th=[ 180], 20.00th=[ 22414], | 30.00th=[ 27919], 40.00th=[ 32375], 50.00th=[ 37487], 60.00th=[ 43779], | 70.00th=[ 49021], 80.00th=[ 58983], 90.00th=[ 74974], 95.00th=[ 91751], | 99.00th=[133694], 99.50th=[141558], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 61, max= 352, per=26.63%, avg=209.05, stdev=74.91, samples=56 iops : min= 3, max= 22, avg=12.34, stdev= 4.77, samples=56 write: IOPS=13, BW=217KiB/s (222kB/s)(6256KiB/28841msec); 0 zone resets clat (usec): min=1661, max=162439, avg=33509.14, stdev=32229.16 lat (usec): min=1662, max=162440, avg=33518.27, stdev=32223.41 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2311], 10.00th=[ 3097], 20.00th=[ 5604], | 30.00th=[ 8848], 40.00th=[ 15795], 50.00th=[ 23200], 60.00th=[ 32900], | 70.00th=[ 43779], 80.00th=[ 58983], 90.00th=[ 82314], 95.00th=[ 95945], | 99.00th=[149947], 99.50th=[156238], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 63, max= 509, per=26.39%, avg=217.98, stdev=90.72, samples=56 iops : min= 3, max= 31, avg=12.89, stdev= 5.75, samples=56 lat (usec) : 50=0.39%, 100=3.65%, 250=1.04%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.26% lat (msec) : 2=1.82%, 4=4.82%, 10=10.03%, 20=8.98%, 50=40.76% lat (msec) : 100=24.09%, 250=3.78%, 500=0.13% cpu : usr=0.08%, sys=6.33%, ctx=1763, 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=785KiB/s (804kB/s), 194KiB/s-209KiB/s (199kB/s-214kB/s), io=23.4MiB (24.5MB), run=28841-30501msec WRITE: bw=826KiB/s (846kB/s), 199KiB/s-222KiB/s (204kB/s-228kB/s), io=24.6MiB (25.8MB), run=28841-30501msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179124: Tue Aug 25 23:17:46 2026 read: IOPS=8, BW=143KiB/s (147kB/s)(5920KiB/41339msec) clat (msec): min=5, max=188, avg=43.30, stdev=33.71 lat (msec): min=5, max=188, avg=43.30, stdev=33.71 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 64], 90.00th=[ 91], 95.00th=[ 115], | 99.00th=[ 169], 99.50th=[ 182], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 31, max= 446, per=25.10%, avg=143.81, stdev=82.87, samples=79 iops : min= 1, max= 27, avg= 8.19, stdev= 5.19, samples=79 write: IOPS=9, BW=154KiB/s (158kB/s)(6368KiB/41339msec); 0 zone resets clat (msec): min=14, max=325, avg=62.61, stdev=41.39 lat (msec): min=14, max=325, avg=62.62, stdev=41.40 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 60], | 70.00th=[ 72], 80.00th=[ 87], 90.00th=[ 116], 95.00th=[ 144], | 99.00th=[ 245], 99.50th=[ 296], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 29, max= 380, per=25.29%, avg=152.48, stdev=78.19, samples=81 iops : min= 1, max= 23, avg= 8.73, stdev= 4.91, samples=81 lat (msec) : 10=1.69%, 20=10.42%, 50=48.83%, 100=28.26%, 250=10.42% lat (msec) : 500=0.39% cpu : usr=0.08%, sys=2.02%, ctx=1229, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179125: Tue Aug 25 23:17:46 2026 read: IOPS=8, BW=138KiB/s (141kB/s)(5744KiB/41731msec) clat (msec): min=7, max=191, avg=43.91, stdev=36.33 lat (msec): min=7, max=191, avg=43.91, stdev=36.33 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 66], 90.00th=[ 101], 95.00th=[ 129], | 99.00th=[ 161], 99.50th=[ 188], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 29, max= 413, per=24.32%, avg=139.35, stdev=84.24, samples=80 iops : min= 1, max= 25, avg= 7.90, stdev= 5.29, samples=80 write: IOPS=9, BW=157KiB/s (161kB/s)(6544KiB/41731msec); 0 zone resets clat (msec): min=15, max=268, avg=63.22, stdev=39.45 lat (msec): min=15, max=268, avg=63.22, stdev=39.45 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 63], | 70.00th=[ 73], 80.00th=[ 90], 90.00th=[ 120], 95.00th=[ 142], | 99.00th=[ 190], 99.50th=[ 207], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 31, max= 380, per=26.06%, avg=157.12, stdev=85.30, samples=81 iops : min= 1, max= 23, avg= 9.04, stdev= 5.42, samples=81 lat (msec) : 10=0.78%, 20=13.93%, 50=45.31%, 100=26.82%, 250=13.02% lat (msec) : 500=0.13% cpu : usr=0.07%, sys=1.91%, ctx=1177, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179127: Tue Aug 25 23:17:46 2026 read: IOPS=9, BW=150KiB/s (154kB/s)(6256KiB/41725msec) clat (msec): min=8, max=238, avg=42.40, stdev=35.68 lat (msec): min=8, max=238, avg=42.40, stdev=35.68 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 93], 95.00th=[ 125], | 99.00th=[ 180], 99.50th=[ 184], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 30, max= 445, per=27.15%, avg=155.56, stdev=99.36, samples=79 iops : min= 1, max= 27, avg= 8.92, stdev= 6.26, samples=79 write: IOPS=9, BW=145KiB/s (148kB/s)(6032KiB/41725msec); 0 zone resets clat (msec): min=16, max=278, avg=66.55, stdev=41.43 lat (msec): min=16, max=278, avg=66.55, stdev=41.43 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 81], 80.00th=[ 96], 90.00th=[ 125], 95.00th=[ 148], | 99.00th=[ 192], 99.50th=[ 251], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 320, per=23.48%, avg=141.60, stdev=74.75, samples=82 iops : min= 1, max= 20, avg= 8.06, stdev= 4.73, samples=82 lat (msec) : 10=0.39%, 20=14.06%, 50=45.96%, 100=26.43%, 250=13.02% lat (msec) : 500=0.13% cpu : usr=0.04%, sys=1.90%, ctx=1171, 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=179128: Tue Aug 25 23:17:46 2026 read: IOPS=9, BW=145KiB/s (148kB/s)(6032KiB/41683msec) clat (msec): min=6, max=238, avg=44.85, stdev=35.18 lat (msec): min=6, max=238, avg=44.85, stdev=35.18 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 48], 80.00th=[ 67], 90.00th=[ 93], 95.00th=[ 118], | 99.00th=[ 169], 99.50th=[ 194], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 31, max= 447, per=25.17%, avg=144.20, stdev=86.63, samples=81 iops : min= 1, max= 27, avg= 8.22, stdev= 5.50, samples=81 write: IOPS=9, BW=150KiB/s (154kB/s)(6256KiB/41683msec); 0 zone resets clat (msec): min=15, max=332, avg=63.00, stdev=41.59 lat (msec): min=15, max=332, avg=63.00, stdev=41.58 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 38], 40.00th=[ 42], 50.00th=[ 48], 60.00th=[ 58], | 70.00th=[ 72], 80.00th=[ 89], 90.00th=[ 121], 95.00th=[ 150], | 99.00th=[ 188], 99.50th=[ 241], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 383, per=24.64%, avg=148.60, stdev=80.57, samples=82 iops : min= 1, max= 23, avg= 8.50, stdev= 5.06, samples=82 lat (msec) : 10=0.78%, 20=10.81%, 50=50.39%, 100=25.65%, 250=12.24% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=1.97%, ctx=1207, 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=574KiB/s (588kB/s), 138KiB/s-150KiB/s (141kB/s-154kB/s), io=23.4MiB (24.5MB), run=41339-41731msec WRITE: bw=604KiB/s (618kB/s), 145KiB/s-157KiB/s (148kB/s-161kB/s), io=24.6MiB (25.8MB), run=41339-41731msec 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=179145: Tue Aug 25 23:18:02 2026 read: IOPS=1, BW=1112KiB/s (1138kB/s)(7168KiB/6448msec) clat (usec): min=640, max=4321.8k, avg=725813.15, stdev=1590854.89 lat (usec): min=641, max=4321.8k, avg=725814.68, stdev=1590854.97 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 644], 10.00th=[ 644], | 20.00th=[ 865], 30.00th=[ 3163], 40.00th=[ 3163], | 50.00th=[ 212861], 60.00th=[ 233833], 70.00th=[ 233833], | 80.00th=[ 308282], 90.00th=[4328522], 95.00th=[4328522], | 99.00th=[4328522], 99.50th=[4328522], 99.90th=[4328522], | 99.95th=[4328522], 99.99th=[4328522] bw ( KiB/s): min= 2035, max= 4047, per=93.96%, avg=2734.25, stdev=950.19, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=794KiB/s (813kB/s)(5120KiB/6448msec); 0 zone resets clat (msec): min=181, max=305, avg=240.03, stdev=52.27 lat (msec): min=181, max=305, avg=240.17, stdev=52.16 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 2035, max= 6107, per=99.90%, avg=4071.00, stdev=2879.34, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 4=8.33%, 250=41.67%, 500=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=8.89%, ctx=582, 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=179146: Tue Aug 25 23:18:02 2026 read: IOPS=0, BW=291KiB/s (298kB/s)(2048KiB/7036msec) clat (msec): min=3, max=208, avg=106.36, stdev=145.12 lat (msec): min=3, max=208, avg=106.36, stdev=145.12 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4], | 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 209], | 70.00th=[ 209], 80.00th=[ 209], 90.00th=[ 209], 95.00th=[ 209], | 99.00th=[ 209], 99.50th=[ 209], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 1406, max= 2043, per=59.26%, avg=1724.50, stdev=450.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1455KiB/s (1490kB/s)(10.0MiB/7036msec); 0 zone resets clat (msec): min=136, max=3292, avg=649.53, stdev=951.79 lat (msec): min=136, max=3292, avg=649.81, stdev=951.71 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 138], | 30.00th=[ 218], 40.00th=[ 228], 50.00th=[ 241], 60.00th=[ 330], | 70.00th=[ 592], 80.00th=[ 642], 90.00th=[ 684], 95.00th=[ 3306], | 99.00th=[ 3306], 99.50th=[ 3306], 99.90th=[ 3306], 99.95th=[ 3306], | 99.99th=[ 3306] bw ( KiB/s): min= 1954, max= 6059, per=74.49%, avg=3035.50, stdev=1693.44, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 4=8.33%, 250=50.00%, 500=8.33%, 750=25.00%, >=2000=8.33% cpu : usr=0.01%, sys=9.01%, ctx=123, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179147: Tue Aug 25 23:18:02 2026 read: IOPS=0, BW=988KiB/s (1012kB/s)(6144KiB/6217msec) clat (usec): min=618, max=200708, avg=117933.35, stdev=92642.07 lat (usec): min=619, max=200710, avg=117934.80, stdev=92642.21 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 619], 10.00th=[ 619], 20.00th=[ 660], | 30.00th=[ 660], 40.00th=[156238], 50.00th=[156238], 60.00th=[156238], | 70.00th=[191890], 80.00th=[191890], 90.00th=[200279], 95.00th=[200279], | 99.00th=[200279], 99.50th=[200279], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 4039, max= 4087, per=100.00%, avg=4063.00, stdev=33.94, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=988KiB/s (1012kB/s)(6144KiB/6217msec); 0 zone resets clat (msec): min=176, max=2881, avg=883.96, stdev=1035.29 lat (msec): min=176, max=2881, avg=884.16, stdev=1035.18 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 460], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 2019, max= 2786, per=54.42%, avg=2217.75, stdev=378.98, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=16.67% lat (msec) : 250=41.67%, 500=25.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=7.96%, ctx=272, 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=179149: Tue Aug 25 23:18:02 2026 read: IOPS=0, BW=872KiB/s (893kB/s)(5120KiB/5873msec) clat (usec): min=526, max=265468, avg=139826.77, stdev=128553.42 lat (usec): min=527, max=265469, avg=139828.22, stdev=128553.64 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 1090], 40.00th=[ 1090], 50.00th=[210764], 60.00th=[210764], | 70.00th=[221250], 80.00th=[221250], 90.00th=[265290], 95.00th=[265290], | 99.00th=[265290], 99.50th=[265290], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 4039, max= 4087, per=100.00%, avg=4063.00, stdev=33.94, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1221KiB/s (1250kB/s)(7168KiB/5873msec); 0 zone resets clat (msec): min=188, max=3083, avg=732.43, stdev=1061.23 lat (msec): min=188, max=3083, avg=732.55, stdev=1061.20 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 222], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 259], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 844], 90.00th=[ 3071], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min= 1469, max= 4047, per=71.15%, avg=2899.50, stdev=1341.04, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=41.67%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.64%, ctx=166, 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=2911KiB/s (2981kB/s), 291KiB/s-1112KiB/s (298kB/s-1138kB/s), io=20.0MiB (20.0MB), run=5873-7036msec WRITE: bw=4075KiB/s (4173kB/s), 794KiB/s-1455KiB/s (813kB/s-1490kB/s), io=28.0MiB (29.4MB), run=5873-7036msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179150: Tue Aug 25 23:18:04 2026 read: IOPS=0, BW=892KiB/s (914kB/s)(7168KiB/8032msec) clat (msec): min=88, max=3577, avg=857.43, stdev=1250.47 lat (msec): min=88, max=3577, avg=857.44, stdev=1250.47 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 111], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 262], 60.00th=[ 844], | 70.00th=[ 844], 80.00th=[ 953], 90.00th=[ 3574], 95.00th=[ 3574], | 99.00th=[ 3574], 99.50th=[ 3574], 99.90th=[ 3574], 99.95th=[ 3574], | 99.99th=[ 3574] bw ( KiB/s): min= 1385, max= 4023, per=90.02%, avg=2294.60, stdev=1004.81, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=637KiB/s (653kB/s)(5120KiB/8032msec); 0 zone resets clat (msec): min=165, max=579, avg=358.58, stdev=180.44 lat (msec): min=165, max=579, avg=358.80, stdev=180.58 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 2039, max= 4071, per=76.11%, avg=2716.33, stdev=1173.18, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=8.33%, 1000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.02%, sys=2.69%, ctx=85, 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=179151: Tue Aug 25 23:18:04 2026 read: IOPS=0, BW=270KiB/s (277kB/s)(2048KiB/7578msec) clat (msec): min=121, max=644, avg=383.18, stdev=369.80 lat (msec): min=121, max=644, avg=383.18, stdev=369.80 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 123], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 642], 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= 2011, max= 2043, per=79.52%, avg=2027.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1351KiB/s (1384kB/s)(10.0MiB/7578msec); 0 zone resets clat (msec): min=114, max=3494, avg=658.88, stdev=1011.79 lat (msec): min=114, max=3494, avg=659.91, stdev=1011.50 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 123], | 30.00th=[ 211], 40.00th=[ 232], 50.00th=[ 347], 60.00th=[ 384], | 70.00th=[ 531], 80.00th=[ 542], 90.00th=[ 609], 95.00th=[ 3507], | 99.00th=[ 3507], 99.50th=[ 3507], 99.90th=[ 3507], 99.95th=[ 3507], | 99.99th=[ 3507] bw ( KiB/s): min= 2039, max= 6119, per=100.00%, avg=3668.80, stdev=1705.03, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 1.79, samples=5 lat (msec) : 250=41.67%, 500=16.67%, 750=33.33%, >=2000=8.33% cpu : usr=0.04%, sys=3.85%, ctx=127, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179152: Tue Aug 25 23:18:04 2026 read: IOPS=0, BW=815KiB/s (834kB/s)(6144KiB/7541msec) clat (msec): min=78, max=465, avg=213.10, stdev=194.10 lat (msec): min=78, max=465, avg=213.10, stdev=194.10 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 87], | 30.00th=[ 87], 40.00th=[ 92], 50.00th=[ 92], 60.00th=[ 94], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 2039, max= 4087, per=100.00%, avg=2554.25, stdev=1021.84, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=815KiB/s (834kB/s)(6144KiB/7541msec); 0 zone resets clat (msec): min=146, max=3474, avg=1001.41, stdev=1227.15 lat (msec): min=146, max=3475, avg=1001.97, stdev=1227.27 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 567], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 3473], 95.00th=[ 3473], | 99.00th=[ 3473], 99.50th=[ 3473], 99.90th=[ 3473], 99.95th=[ 3473], | 99.99th=[ 3473] bw ( KiB/s): min= 2011, max= 2043, per=56.83%, avg=2028.33, stdev=15.32, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 100=33.33%, 250=8.33%, 500=16.67%, 750=33.33%, >=2000=8.33% cpu : usr=0.01%, sys=2.85%, ctx=117, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179153: Tue Aug 25 23:18:04 2026 read: IOPS=0, BW=669KiB/s (685kB/s)(5120KiB/7656msec) clat (msec): min=78, max=612, avg=236.88, stdev=223.49 lat (msec): min=78, max=612, avg=236.88, stdev=223.49 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 79], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 115], 60.00th=[ 115], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2039, max= 4096, per=100.00%, avg=2727.67, stdev=1185.02, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 write: IOPS=0, BW=936KiB/s (959kB/s)(7168KiB/7656msec); 0 zone resets clat (msec): min=197, max=3370, avg=914.68, stdev=1133.16 lat (msec): min=197, max=3370, avg=914.80, stdev=1133.16 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 393], 60.00th=[ 885], | 70.00th=[ 885], 80.00th=[ 1045], 90.00th=[ 3373], 95.00th=[ 3373], | 99.00th=[ 3373], 99.50th=[ 3373], 99.90th=[ 3373], 99.95th=[ 3373], | 99.99th=[ 3373] bw ( KiB/s): min= 2019, max= 4096, per=68.41%, avg=2441.60, stdev=924.88, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.47%, ctx=108, 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=2550KiB/s (2611kB/s), 270KiB/s-892KiB/s (277kB/s-914kB/s), io=20.0MiB (20.0MB), run=7541-8032msec WRITE: bw=3570KiB/s (3655kB/s), 637KiB/s-1351KiB/s (653kB/s-1384kB/s), io=28.0MiB (29.4MB), run=7541-8032msec 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=179161: Tue Aug 25 23:18:19 2026 read: IOPS=1, BW=5361KiB/s (5490kB/s)(12.0MiB/2292msec) clat (msec): min=673, max=785, avg=733.74, stdev=56.71 lat (msec): min=673, max=785, avg=733.74, stdev=56.71 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 8126, max= 8192, per=100.00%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=12.13%, ctx=274, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179162: Tue Aug 25 23:18:19 2026 read: IOPS=0, BW=1211KiB/s (1240kB/s)(4096KiB/3382msec) clat (nsec): min=818846k, max=818846k, avg=818846103.00, stdev= 0.00 lat (nsec): min=818849k, max=818849k, avg=818848863.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 818], 5.00th=[ 818], 10.00th=[ 818], 20.00th=[ 818], | 30.00th=[ 818], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 818], | 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= 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=2422KiB/s (2480kB/s)(8192KiB/3382msec); 0 zone resets clat (msec): min=175, max=2267, avg=1221.40, stdev=1478.98 lat (msec): min=177, max=2267, avg=1222.60, stdev=1477.78 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 176], 60.00th=[ 2265], | 70.00th=[ 2265], 80.00th=[ 2265], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=6.54%, ctx=131, 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=179163: Tue Aug 25 23:18:19 2026 write: IOPS=0, BW=4050KiB/s (4147kB/s)(12.0MiB/3034msec); 0 zone resets clat (msec): min=630, max=1478, avg=990.26, stdev=438.22 lat (msec): min=638, max=1478, avg=992.96, stdev=435.20 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 8143, max= 8192, per=84.31%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.02%, ctx=64, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179165: Tue Aug 25 23:18:19 2026 write: IOPS=1, BW=5196KiB/s (5320kB/s)(12.0MiB/2365msec); 0 zone resets clat (msec): min=622, max=893, avg=760.70, stdev=135.89 lat (msec): min=622, max=894, avg=761.87, stdev=136.07 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 7907, max= 8192, per=83.09%, avg=8049.50, stdev=201.53, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=4.02%, ctx=59, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4844KiB/s (4961kB/s), 1211KiB/s-5361KiB/s (1240kB/s-5490kB/s), io=16.0MiB (16.8MB), run=2292-3382msec WRITE: bw=9689KiB/s (9921kB/s), 2422KiB/s-5196KiB/s (2480kB/s-5320kB/s), io=32.0MiB (33.6MB), run=2365-3382msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179164: Tue Aug 25 23:18:19 2026 read: IOPS=0, BW=3925KiB/s (4019kB/s)(12.0MiB/3131msec) clat (msec): min=633, max=1498, avg=1030.42, stdev=436.80 lat (msec): min=633, max=1498, avg=1030.42, stdev=436.80 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8000, max= 8126, per=100.00%, avg=8063.00, stdev=89.10, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=2.68%, ctx=42, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179166: Tue Aug 25 23:18:19 2026 read: IOPS=0, BW=1345KiB/s (1377kB/s)(4096KiB/3046msec) clat (nsec): min=1053.1M, max=1053.1M, avg=1053110794.00, stdev= 0.00 lat (nsec): min=1053.1M, max=1053.1M, avg=1053112999.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1053], 5.00th=[ 1053], 10.00th=[ 1053], 20.00th=[ 1053], | 30.00th=[ 1053], 40.00th=[ 1053], 50.00th=[ 1053], 60.00th=[ 1053], | 70.00th=[ 1053], 80.00th=[ 1053], 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= 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 write: IOPS=0, BW=2689KiB/s (2754kB/s)(8192KiB/3046msec); 0 zone resets clat (msec): min=491, max=1438, avg=964.92, stdev=669.82 lat (msec): min=491, max=1439, avg=965.50, stdev=670.02 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 493], 10.00th=[ 493], 20.00th=[ 493], | 30.00th=[ 493], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 1435], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 8126, max= 8126, per=80.97%, avg=8126.00, 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=3.84%, ctx=49, 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=179167: Tue Aug 25 23:18:19 2026 write: IOPS=0, BW=3764KiB/s (3854kB/s)(12.0MiB/3265msec); 0 zone resets clat (msec): min=626, max=1716, avg=1069.64, stdev=573.12 lat (msec): min=626, max=1718, avg=1071.04, stdev=573.83 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 8143, max= 8175, per=81.30%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.28%, ctx=41, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179168: Tue Aug 25 23:18:19 2026 write: IOPS=1, BW=4546KiB/s (4655kB/s)(12.0MiB/2703msec); 0 zone resets clat (msec): min=321, max=1460, avg=878.33, stdev=569.65 lat (msec): min=321, max=1460, avg=878.87, stdev=569.70 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8000, max= 8126, per=80.34%, avg=8063.00, stdev=89.10, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.26%, ctx=47, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5233KiB/s (5358kB/s), 1345KiB/s-3925KiB/s (1377kB/s-4019kB/s), io=16.0MiB (16.8MB), run=3046-3131msec WRITE: bw=9.80MiB/s (10.3MB/s), 2689KiB/s-4546KiB/s (2754kB/s-4655kB/s), io=32.0MiB (33.6MB), run=2703-3265msec