== sanity test 398b: DIO and buffer IO race ============== 18:00:58 (1786831258) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.40015 s, 9.3 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=145392: Sat Aug 15 18:03:09 2026 read: IOPS=13, BW=52.5KiB/s (53.8kB/s)(5992KiB/114027msec) clat (usec): min=36, max=295294, avg=37364.56, stdev=27530.74 lat (usec): min=37, max=295295, avg=37365.83, stdev=27530.69 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 11600], 20.00th=[ 18220], | 30.00th=[ 23200], 40.00th=[ 27132], 50.00th=[ 32113], 60.00th=[ 38011], | 70.00th=[ 44827], 80.00th=[ 53740], 90.00th=[ 69731], 95.00th=[ 81265], | 99.00th=[139461], 99.50th=[170918], 99.90th=[278922], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 111, per=24.76%, avg=52.00, stdev=20.87, samples=225 iops : min= 1, max= 27, avg=12.36, stdev= 5.24, samples=225 write: IOPS=13, BW=55.2KiB/s (56.5kB/s)(6296KiB/114027msec); 0 zone resets clat (usec): min=980, max=764982, avg=36648.32, stdev=41358.10 lat (usec): min=982, max=764984, avg=36651.97, stdev=41358.99 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1336], 10.00th=[ 1614], 20.00th=[ 3949], | 30.00th=[ 8586], 40.00th=[ 19006], 50.00th=[ 27395], 60.00th=[ 35914], | 70.00th=[ 46400], 80.00th=[ 62653], 90.00th=[ 85459], 95.00th=[103285], | 99.00th=[160433], 99.50th=[208667], 99.90th=[350225], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 7, max= 142, per=24.85%, avg=54.67, stdev=22.42, samples=225 iops : min= 1, max= 35, avg=13.04, stdev= 5.61, samples=225 lat (usec) : 50=0.46%, 100=3.09%, 250=0.23%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=6.12%, 4=4.20%, 10=6.67%, 20=11.91%, 50=41.31% lat (msec) : 100=21.84%, 250=3.81%, 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=5.26%, ctx=6543, 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=145393: Sat Aug 15 18:03:09 2026 read: IOPS=13, BW=52.3KiB/s (53.5kB/s)(5940KiB/113632msec) clat (usec): min=30, max=768470, avg=37472.54, stdev=31518.66 lat (usec): min=30, max=768472, avg=37480.37, stdev=31517.81 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 60], 10.00th=[ 11207], 20.00th=[ 17957], | 30.00th=[ 23462], 40.00th=[ 27919], 50.00th=[ 32637], 60.00th=[ 38011], | 70.00th=[ 44827], 80.00th=[ 54789], 90.00th=[ 68682], 95.00th=[ 83362], | 99.00th=[127402], 99.50th=[135267], 99.90th=[223347], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 7, max= 127, per=24.66%, avg=51.79, stdev=19.95, samples=224 iops : min= 1, max= 31, avg=12.32, stdev= 4.99, samples=224 write: IOPS=13, BW=55.9KiB/s (57.2kB/s)(6348KiB/113632msec); 0 zone resets clat (usec): min=836, max=254205, avg=36291.88, stdev=37802.10 lat (usec): min=837, max=254206, avg=36294.80, stdev=37802.14 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1319], 10.00th=[ 1516], 20.00th=[ 3687], | 30.00th=[ 8029], 40.00th=[ 17957], 50.00th=[ 27132], 60.00th=[ 36963], | 70.00th=[ 46924], 80.00th=[ 60556], 90.00th=[ 82314], 95.00th=[106431], | 99.00th=[175113], 99.50th=[210764], 99.90th=[252707], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 7, max= 118, per=25.20%, avg=55.43, stdev=22.51, samples=223 iops : min= 1, max= 29, avg=13.22, stdev= 5.66, samples=223 lat (usec) : 50=0.42%, 100=3.39%, 250=0.20%, 500=0.10%, 1000=0.13% lat (msec) : 2=6.41%, 4=4.30%, 10=6.90%, 20=11.69%, 50=40.30% lat (msec) : 100=22.01%, 250=4.07%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=5.25%, ctx=6616, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145394: Sat Aug 15 18:03:09 2026 read: IOPS=13, BW=53.5KiB/s (54.8kB/s)(6028KiB/112729msec) clat (usec): min=33, max=786412, avg=37056.54, stdev=31341.62 lat (usec): min=33, max=786414, avg=37057.82, stdev=31341.69 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 11994], 20.00th=[ 18482], | 30.00th=[ 23462], 40.00th=[ 27395], 50.00th=[ 32113], 60.00th=[ 37487], | 70.00th=[ 44827], 80.00th=[ 53216], 90.00th=[ 67634], 95.00th=[ 80217], | 99.00th=[121111], 99.50th=[137364], 99.90th=[223347], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 7, max= 111, per=25.25%, avg=53.02, stdev=21.84, samples=221 iops : min= 1, max= 27, avg=12.62, stdev= 5.48, samples=221 write: IOPS=13, BW=55.5KiB/s (56.9kB/s)(6260KiB/112729msec); 0 zone resets clat (usec): min=811, max=429388, avg=36075.13, stdev=37538.33 lat (usec): min=813, max=429389, avg=36082.19, stdev=37537.02 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1336], 10.00th=[ 1647], 20.00th=[ 3752], | 30.00th=[ 7767], 40.00th=[ 16909], 50.00th=[ 26870], 60.00th=[ 35914], | 70.00th=[ 46400], 80.00th=[ 62129], 90.00th=[ 87557], 95.00th=[107480], | 99.00th=[158335], 99.50th=[170918], 99.90th=[219153], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 7, max= 119, per=24.90%, avg=54.79, stdev=21.47, samples=222 iops : min= 1, max= 29, avg=13.07, stdev= 5.39, samples=222 lat (usec) : 50=0.42%, 100=3.22%, 250=0.20%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=6.02%, 4=4.65%, 10=6.51%, 20=11.46%, 50=41.57% lat (msec) : 100=21.32%, 250=4.26%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.13%, ctx=6458, 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=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=145395: Sat Aug 15 18:03:09 2026 read: IOPS=13, BW=54.2KiB/s (55.5kB/s)(6052KiB/111593msec) clat (usec): min=33, max=217793, avg=36569.36, stdev=25736.44 lat (usec): min=33, max=217794, avg=36575.85, stdev=25737.71 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 11338], 20.00th=[ 18482], | 30.00th=[ 22938], 40.00th=[ 27132], 50.00th=[ 31327], 60.00th=[ 37487], | 70.00th=[ 43779], 80.00th=[ 52167], 90.00th=[ 67634], 95.00th=[ 84411], | 99.00th=[119014], 99.50th=[156238], 99.90th=[196084], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 7, max= 111, per=25.89%, avg=54.37, stdev=20.60, samples=218 iops : min= 1, max= 27, avg=12.95, stdev= 5.18, samples=218 write: IOPS=13, BW=55.9KiB/s (57.2kB/s)(6236KiB/111593msec); 0 zone resets clat (usec): min=886, max=782646, avg=35823.89, stdev=40668.99 lat (usec): min=887, max=782648, avg=35826.36, stdev=40669.04 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1336], 10.00th=[ 1680], 20.00th=[ 4146], | 30.00th=[ 8455], 40.00th=[ 17695], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 46400], 80.00th=[ 61604], 90.00th=[ 83362], 95.00th=[105382], | 99.00th=[147850], 99.50th=[177210], 99.90th=[400557], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 15, max= 151, per=25.20%, avg=55.44, stdev=23.18, samples=220 iops : min= 3, max= 37, avg=13.23, stdev= 5.84, samples=220 lat (usec) : 50=0.78%, 100=3.09%, 250=0.13%, 1000=0.07% lat (msec) : 2=6.05%, 4=3.94%, 10=6.71%, 20=12.21%, 50=41.96% lat (msec) : 100=21.03%, 250=3.97%, 500=0.03%, 1000=0.03% cpu : usr=0.06%, sys=5.23%, ctx=6625, 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=211KiB/s (216kB/s), 52.3KiB/s-54.2KiB/s (53.5kB/s-55.5kB/s), io=23.4MiB (24.6MB), run=111593-114027msec WRITE: bw=220KiB/s (226kB/s), 55.2KiB/s-55.9KiB/s (56.5kB/s-57.2kB/s), io=24.6MiB (25.7MB), run=111593-114027msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145397: Sat Aug 15 18:04:52 2026 read: IOPS=6, BW=27.7KiB/s (28.4kB/s)(5992KiB/216163msec) clat (msec): min=4, max=763, avg=28.93, stdev=35.34 lat (msec): min=4, max=763, avg=28.93, stdev=35.34 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 27], 80.00th=[ 39], 90.00th=[ 65], 95.00th=[ 87], | 99.00th=[ 157], 99.50th=[ 192], 99.90th=[ 279], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 119, per=26.45%, avg=29.09, stdev=20.72, samples=400 iops : min= 1, max= 29, avg= 6.67, stdev= 5.24, samples=400 write: IOPS=7, BW=29.1KiB/s (29.8kB/s)(6296KiB/216163msec); 0 zone resets clat (msec): min=33, max=426, avg=109.73, stdev=54.84 lat (msec): min=33, max=428, avg=109.74, stdev=54.85 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 48], 10.00th=[ 56], 20.00th=[ 66], | 30.00th=[ 75], 40.00th=[ 85], 50.00th=[ 96], 60.00th=[ 107], | 70.00th=[ 123], 80.00th=[ 150], 90.00th=[ 186], 95.00th=[ 218], | 99.00th=[ 300], 99.50th=[ 313], 99.90th=[ 422], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7, max= 64, per=25.08%, avg=28.84, stdev=13.66, samples=424 iops : min= 1, max= 16, avg= 6.59, stdev= 3.49, samples=424 lat (msec) : 10=8.01%, 20=19.01%, 50=17.87%, 100=30.21%, 250=23.67% lat (msec) : 500=1.20%, 1000=0.03% cpu : usr=0.04%, sys=1.50%, ctx=5253, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145398: Sat Aug 15 18:04:52 2026 read: IOPS=6, BW=27.4KiB/s (28.1kB/s)(5940KiB/216396msec) clat (msec): min=5, max=816, avg=30.60, stdev=39.02 lat (msec): min=5, max=816, avg=30.60, stdev=39.02 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 28], 80.00th=[ 42], 90.00th=[ 69], 95.00th=[ 95], | 99.00th=[ 190], 99.50th=[ 213], 99.90th=[ 275], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 103, per=26.86%, avg=29.55, stdev=20.56, samples=390 iops : min= 1, max= 25, avg= 6.78, stdev= 5.18, samples=390 write: IOPS=7, BW=29.3KiB/s (30.0kB/s)(6348KiB/216396msec); 0 zone resets clat (msec): min=29, max=568, avg=107.65, stdev=54.83 lat (msec): min=29, max=568, avg=107.65, stdev=54.83 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 48], 10.00th=[ 54], 20.00th=[ 66], | 30.00th=[ 73], 40.00th=[ 83], 50.00th=[ 93], 60.00th=[ 107], | 70.00th=[ 124], 80.00th=[ 144], 90.00th=[ 182], 95.00th=[ 218], | 99.00th=[ 288], 99.50th=[ 309], 99.90th=[ 351], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 7, max= 71, per=25.25%, avg=29.04, stdev=14.30, samples=424 iops : min= 1, max= 17, avg= 6.64, stdev= 3.63, samples=424 lat (msec) : 10=7.75%, 20=19.89%, 50=16.11%, 100=31.35%, 250=23.44% lat (msec) : 500=1.40%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=1.45%, ctx=5216, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145399: Sat Aug 15 18:04:52 2026 read: IOPS=6, BW=27.9KiB/s (28.5kB/s)(6028KiB/216314msec) clat (msec): min=5, max=362, avg=30.25, stdev=32.20 lat (msec): min=5, max=362, avg=30.25, stdev=32.20 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 44], 90.00th=[ 68], 95.00th=[ 93], | 99.00th=[ 159], 99.50th=[ 201], 99.90th=[ 262], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 103, per=26.52%, avg=29.17, stdev=19.81, samples=401 iops : min= 1, max= 25, avg= 6.68, stdev= 5.01, samples=401 write: IOPS=7, BW=28.9KiB/s (29.6kB/s)(6260KiB/216314msec); 0 zone resets clat (msec): min=26, max=869, avg=109.00, stdev=58.92 lat (msec): min=26, max=869, avg=109.00, stdev=58.93 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 48], 10.00th=[ 55], 20.00th=[ 64], | 30.00th=[ 72], 40.00th=[ 82], 50.00th=[ 92], 60.00th=[ 105], | 70.00th=[ 129], 80.00th=[ 153], 90.00th=[ 186], 95.00th=[ 213], | 99.00th=[ 300], 99.50th=[ 347], 99.90th=[ 414], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 71, per=24.78%, avg=28.50, stdev=14.48, samples=426 iops : min= 1, max= 17, avg= 6.51, stdev= 3.67, samples=426 lat (msec) : 10=7.81%, 20=19.08%, 50=17.22%, 100=32.03%, 250=22.66% lat (msec) : 500=1.17%, 1000=0.03% cpu : usr=0.05%, sys=1.47%, ctx=5303, 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=145400: Sat Aug 15 18:04:52 2026 read: IOPS=6, BW=27.9KiB/s (28.6kB/s)(6052KiB/216874msec) clat (msec): min=4, max=362, avg=28.76, stdev=31.69 lat (msec): min=4, max=362, avg=28.77, stdev=31.69 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 38], 90.00th=[ 66], 95.00th=[ 90], | 99.00th=[ 167], 99.50th=[ 180], 99.90th=[ 275], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 103, per=26.84%, avg=29.52, stdev=20.09, samples=398 iops : min= 1, max= 25, avg= 6.77, stdev= 5.07, samples=398 write: IOPS=7, BW=28.8KiB/s (29.4kB/s)(6236KiB/216874msec); 0 zone resets clat (msec): min=30, max=872, avg=111.13, stdev=59.74 lat (msec): min=30, max=872, avg=111.13, stdev=59.74 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 49], 10.00th=[ 56], 20.00th=[ 66], | 30.00th=[ 75], 40.00th=[ 84], 50.00th=[ 95], 60.00th=[ 109], | 70.00th=[ 127], 80.00th=[ 150], 90.00th=[ 190], 95.00th=[ 220], | 99.00th=[ 296], 99.50th=[ 309], 99.90th=[ 575], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 71, per=24.64%, avg=28.34, stdev=13.77, samples=426 iops : min= 1, max= 17, avg= 6.47, stdev= 3.51, samples=426 lat (msec) : 10=9.02%, 20=19.24%, 50=17.02%, 100=29.62%, 250=23.57% lat (msec) : 500=1.46%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.44%, ctx=5163, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=111KiB/s (113kB/s), 27.4KiB/s-27.9KiB/s (28.1kB/s-28.6kB/s), io=23.4MiB (24.6MB), run=216163-216874msec WRITE: bw=116KiB/s (119kB/s), 28.8KiB/s-29.3KiB/s (29.4kB/s-30.0kB/s), io=24.6MiB (25.7MB), run=216163-216874msec 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=145447: Sat Aug 15 18:05:26 2026 read: IOPS=15, BW=241KiB/s (247kB/s)(5920KiB/24539msec) clat (usec): min=35, max=163508, avg=32210.25, stdev=26119.60 lat (usec): min=36, max=163510, avg=32220.08, stdev=26121.24 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 55], 10.00th=[ 60], 20.00th=[ 79], | 30.00th=[ 18744], 40.00th=[ 24511], 50.00th=[ 31589], 60.00th=[ 37487], | 70.00th=[ 43254], 80.00th=[ 52691], 90.00th=[ 65274], 95.00th=[ 77071], | 99.00th=[112722], 99.50th=[124257], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 31, max= 629, per=24.62%, avg=240.27, stdev=113.25, samples=48 iops : min= 1, max= 39, avg=14.23, stdev= 7.16, samples=48 write: IOPS=16, BW=260KiB/s (266kB/s)(6368KiB/24539msec); 0 zone resets clat (usec): min=1260, max=255506, avg=30770.65, stdev=36378.45 lat (usec): min=1261, max=255508, avg=30772.71, stdev=36378.52 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1827], 10.00th=[ 2180], 20.00th=[ 3884], | 30.00th=[ 6652], 40.00th=[ 10683], 50.00th=[ 19530], 60.00th=[ 28443], | 70.00th=[ 39584], 80.00th=[ 51119], 90.00th=[ 69731], 95.00th=[ 94897], | 99.00th=[202376], 99.50th=[214959], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 63, max= 541, per=25.86%, avg=265.34, stdev=128.62, samples=47 iops : min= 3, max= 33, avg=15.79, stdev= 8.08, samples=47 lat (usec) : 50=1.04%, 100=9.64%, 500=0.26% lat (msec) : 2=4.69%, 4=7.03%, 10=9.38%, 20=9.90%, 50=36.46% lat (msec) : 100=18.88%, 250=2.60%, 500=0.13% cpu : usr=0.09%, sys=6.26%, ctx=1436, 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=145448: Sat Aug 15 18:05:26 2026 read: IOPS=14, BW=236KiB/s (241kB/s)(5744KiB/24364msec) clat (usec): min=37, max=154398, avg=34636.48, stdev=27790.36 lat (usec): min=37, max=154399, avg=34637.61, stdev=27790.39 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 53], 10.00th=[ 62], 20.00th=[ 84], | 30.00th=[ 20055], 40.00th=[ 26608], 50.00th=[ 32113], 60.00th=[ 39060], | 70.00th=[ 47449], 80.00th=[ 55313], 90.00th=[ 68682], 95.00th=[ 85459], | 99.00th=[120062], 99.50th=[154141], 99.90th=[154141], 99.95th=[154141], | 99.99th=[154141] bw ( KiB/s): min= 58, max= 446, per=24.17%, avg=235.90, stdev=92.17, samples=48 iops : min= 3, max= 27, avg=13.94, stdev= 5.79, samples=48 write: IOPS=16, BW=269KiB/s (275kB/s)(6544KiB/24364msec); 0 zone resets clat (usec): min=1005, max=156521, avg=28684.22, stdev=30813.57 lat (usec): min=1006, max=156523, avg=28691.95, stdev=30809.67 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1942], 10.00th=[ 2540], 20.00th=[ 4015], | 30.00th=[ 6325], 40.00th=[ 9634], 50.00th=[ 15270], 60.00th=[ 26084], | 70.00th=[ 36963], 80.00th=[ 52167], 90.00th=[ 74974], 95.00th=[ 94897], | 99.00th=[128451], 99.50th=[135267], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 62, max= 509, per=26.14%, avg=268.23, stdev=99.17, samples=48 iops : min= 3, max= 31, avg=15.98, stdev= 6.20, samples=48 lat (usec) : 50=1.82%, 100=7.94%, 250=0.52%, 750=0.13% lat (msec) : 2=3.26%, 4=7.42%, 10=11.20%, 20=10.29%, 50=34.64% lat (msec) : 100=19.53%, 250=3.26% cpu : usr=0.09%, sys=6.44%, ctx=1439, 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=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=145449: Sat Aug 15 18:05:26 2026 read: IOPS=16, BW=269KiB/s (276kB/s)(6256KiB/23243msec) clat (usec): min=37, max=165021, avg=32432.04, stdev=27545.97 lat (usec): min=38, max=165023, avg=32433.22, stdev=27546.01 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 51], 10.00th=[ 58], 20.00th=[ 73], | 30.00th=[ 18744], 40.00th=[ 25560], 50.00th=[ 31065], 60.00th=[ 36439], | 70.00th=[ 43254], 80.00th=[ 51643], 90.00th=[ 64226], 95.00th=[ 79168], | 99.00th=[137364], 99.50th=[160433], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 87, max= 509, per=27.93%, avg=272.56, stdev=101.17, samples=45 iops : min= 5, max= 31, avg=16.27, stdev= 6.35, samples=45 write: IOPS=16, BW=260KiB/s (266kB/s)(6032KiB/23243msec); 0 zone resets clat (usec): min=1046, max=175142, avg=27469.08, stdev=28441.27 lat (usec): min=1046, max=175144, avg=27471.15, stdev=28441.26 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1942], 10.00th=[ 2606], 20.00th=[ 5473], | 30.00th=[ 8356], 40.00th=[ 11600], 50.00th=[ 17171], 60.00th=[ 23987], | 70.00th=[ 33817], 80.00th=[ 44303], 90.00th=[ 68682], 95.00th=[ 84411], | 99.00th=[115868], 99.50th=[166724], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 94, max= 497, per=25.12%, avg=257.73, stdev=92.57, samples=45 iops : min= 5, max= 31, avg=15.33, stdev= 5.83, samples=45 lat (usec) : 50=2.34%, 100=9.51%, 250=0.39%, 500=0.13%, 750=0.26% lat (msec) : 2=3.39%, 4=4.82%, 10=9.77%, 20=11.85%, 50=37.50% lat (msec) : 100=17.19%, 250=2.86% cpu : usr=0.08%, sys=6.52%, ctx=1444, 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=145450: Sat Aug 15 18:05:26 2026 read: IOPS=16, BW=260KiB/s (266kB/s)(6032KiB/23243msec) clat (usec): min=34, max=142539, avg=32610.80, stdev=27919.53 lat (usec): min=34, max=142541, avg=32617.15, stdev=27925.95 clat percentiles (usec): | 1.00th=[ 37], 5.00th=[ 50], 10.00th=[ 58], 20.00th=[ 70], | 30.00th=[ 16909], 40.00th=[ 25297], 50.00th=[ 31065], 60.00th=[ 36963], | 70.00th=[ 44827], 80.00th=[ 53740], 90.00th=[ 68682], 95.00th=[ 80217], | 99.00th=[125305], 99.50th=[129500], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 88, max= 447, per=26.56%, avg=259.22, stdev=84.65, samples=45 iops : min= 5, max= 27, avg=15.42, stdev= 5.34, samples=45 write: IOPS=16, BW=269KiB/s (276kB/s)(6256KiB/23243msec); 0 zone resets clat (usec): min=1456, max=142807, avg=27786.21, stdev=29570.96 lat (usec): min=1457, max=142809, avg=27788.21, stdev=29570.93 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1942], 10.00th=[ 2376], 20.00th=[ 4047], | 30.00th=[ 5800], 40.00th=[ 8356], 50.00th=[ 13960], 60.00th=[ 24249], | 70.00th=[ 39584], 80.00th=[ 52691], 90.00th=[ 69731], 95.00th=[ 90702], | 99.00th=[121111], 99.50th=[135267], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 94, max= 476, per=26.23%, avg=269.13, stdev=97.31, samples=45 iops : min= 5, max= 29, avg=16.04, stdev= 6.10, samples=45 lat (usec) : 50=2.34%, 100=10.03%, 250=0.52%, 750=0.26%, 1000=0.13% lat (msec) : 2=3.26%, 4=6.90%, 10=12.37%, 20=9.38%, 50=31.90% lat (msec) : 100=20.44%, 250=2.47% cpu : usr=0.08%, sys=6.27%, ctx=1327, 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=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=976KiB/s (1000kB/s), 236KiB/s-269KiB/s (241kB/s-276kB/s), io=23.4MiB (24.5MB), run=23243-24539msec WRITE: bw=1027KiB/s (1052kB/s), 260KiB/s-269KiB/s (266kB/s-276kB/s), io=24.6MiB (25.8MB), run=23243-24539msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145452: Sat Aug 15 18:06:02 2026 read: IOPS=6, BW=99.0KiB/s (102kB/s)(5920KiB/59209msec) clat (msec): min=7, max=239, avg=37.80, stdev=32.39 lat (msec): min=7, max=239, avg=37.80, stdev=32.39 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 52], 90.00th=[ 77], 95.00th=[ 102], | 99.00th=[ 180], 99.50th=[ 213], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 31, max= 288, per=26.24%, avg=103.91, stdev=61.72, samples=112 iops : min= 1, max= 18, avg= 5.76, stdev= 3.91, samples=112 write: IOPS=6, BW=108KiB/s (110kB/s)(6368KiB/59209msec); 0 zone resets clat (msec): min=44, max=323, avg=113.33, stdev=47.04 lat (msec): min=44, max=323, avg=113.34, stdev=47.04 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 75], | 30.00th=[ 85], 40.00th=[ 95], 50.00th=[ 104], 60.00th=[ 116], | 70.00th=[ 129], 80.00th=[ 146], 90.00th=[ 182], 95.00th=[ 201], | 99.00th=[ 271], 99.50th=[ 300], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 29, max= 224, per=25.62%, avg=106.83, stdev=45.94, samples=117 iops : min= 1, max= 14, avg= 5.94, stdev= 2.93, samples=117 lat (msec) : 10=2.47%, 20=12.11%, 50=24.74%, 100=30.60%, 250=29.30% lat (msec) : 500=0.78% cpu : usr=0.07%, sys=1.66%, ctx=1400, 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=145453: Sat Aug 15 18:06:02 2026 read: IOPS=5, BW=95.1KiB/s (97.4kB/s)(5744KiB/60415msec) clat (msec): min=7, max=193, avg=38.59, stdev=34.31 lat (msec): min=7, max=193, avg=38.59, stdev=34.31 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 43], 80.00th=[ 53], 90.00th=[ 81], 95.00th=[ 112], | 99.00th=[ 182], 99.50th=[ 190], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 29, max= 349, per=26.26%, avg=103.97, stdev=61.05, samples=108 iops : min= 1, max= 21, avg= 5.75, stdev= 3.84, samples=108 write: IOPS=6, BW=108KiB/s (111kB/s)(6544KiB/60415msec); 0 zone resets clat (msec): min=26, max=366, avg=112.90, stdev=47.77 lat (msec): min=26, max=366, avg=112.91, stdev=47.78 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 51], 10.00th=[ 59], 20.00th=[ 74], | 30.00th=[ 84], 40.00th=[ 93], 50.00th=[ 105], 60.00th=[ 118], | 70.00th=[ 132], 80.00th=[ 148], 90.00th=[ 178], 95.00th=[ 199], | 99.00th=[ 255], 99.50th=[ 262], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 29, max= 255, per=25.99%, avg=108.40, stdev=50.40, samples=118 iops : min= 1, max= 15, avg= 6.03, stdev= 3.21, samples=118 lat (msec) : 10=2.21%, 20=13.41%, 50=22.66%, 100=30.60%, 250=30.21% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=1.67%, ctx=1436, 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=145454: Sat Aug 15 18:06:02 2026 read: IOPS=6, BW=111KiB/s (113kB/s)(6256KiB/56447msec) clat (msec): min=5, max=233, avg=38.16, stdev=35.79 lat (msec): min=5, max=233, avg=38.17, stdev=35.79 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 50], 90.00th=[ 75], 95.00th=[ 117], | 99.00th=[ 190], 99.50th=[ 211], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 31, max= 380, per=29.68%, avg=117.53, stdev=75.46, samples=105 iops : min= 1, max= 23, avg= 6.61, stdev= 4.76, samples=105 write: IOPS=6, BW=107KiB/s (109kB/s)(6032KiB/56447msec); 0 zone resets clat (msec): min=36, max=366, avg=109.40, stdev=46.22 lat (msec): min=36, max=366, avg=109.40, stdev=46.22 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 52], 10.00th=[ 62], 20.00th=[ 71], | 30.00th=[ 81], 40.00th=[ 90], 50.00th=[ 101], 60.00th=[ 113], | 70.00th=[ 128], 80.00th=[ 146], 90.00th=[ 169], 95.00th=[ 194], | 99.00th=[ 284], 99.50th=[ 296], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 31, max= 256, per=25.90%, avg=107.99, stdev=44.30, samples=109 iops : min= 1, max= 16, avg= 6.01, stdev= 2.84, samples=109 lat (msec) : 10=2.08%, 20=15.49%, 50=25.26%, 100=28.91%, 250=27.60% lat (msec) : 500=0.65% cpu : usr=0.04%, sys=1.65%, ctx=1429, 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=145455: Sat Aug 15 18:06:02 2026 read: IOPS=6, BW=103KiB/s (105kB/s)(6032KiB/58750msec) clat (msec): min=6, max=193, avg=35.40, stdev=29.69 lat (msec): min=6, max=193, avg=35.41, stdev=29.69 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=[ 32], | 70.00th=[ 37], 80.00th=[ 47], 90.00th=[ 72], 95.00th=[ 94], | 99.00th=[ 161], 99.50th=[ 188], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 31, max= 316, per=28.23%, avg=111.81, stdev=65.09, samples=105 iops : min= 1, max= 19, avg= 6.27, stdev= 4.07, samples=105 write: IOPS=6, BW=106KiB/s (109kB/s)(6256KiB/58750msec); 0 zone resets clat (msec): min=35, max=399, avg=115.09, stdev=52.60 lat (msec): min=35, max=399, avg=115.09, stdev=52.60 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 73], | 30.00th=[ 85], 40.00th=[ 94], 50.00th=[ 106], 60.00th=[ 115], | 70.00th=[ 129], 80.00th=[ 148], 90.00th=[ 178], 95.00th=[ 215], | 99.00th=[ 321], 99.50th=[ 388], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 29, max= 254, per=25.67%, avg=107.06, stdev=48.63, samples=115 iops : min= 1, max= 15, avg= 5.95, stdev= 3.10, samples=115 lat (msec) : 10=2.47%, 20=14.71%, 50=24.09%, 100=29.30%, 250=28.26% lat (msec) : 500=1.17% cpu : usr=0.04%, sys=1.47%, ctx=1370, 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=396KiB/s (406kB/s), 95.1KiB/s-111KiB/s (97.4kB/s-113kB/s), io=23.4MiB (24.5MB), run=56447-60415msec WRITE: bw=417KiB/s (427kB/s), 106KiB/s-108KiB/s (109kB/s-111kB/s), io=24.6MiB (25.8MB), run=56447-60415msec 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=145471: Sat Aug 15 18:06:17 2026 read: IOPS=0, BW=994KiB/s (1018kB/s)(7168KiB/7210msec) clat (msec): min=135, max=4833, avg=861.39, stdev=1753.71 lat (msec): min=135, max=4833, avg=861.39, stdev=1753.71 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 140], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 184], 60.00th=[ 201], | 70.00th=[ 201], 80.00th=[ 393], 90.00th=[ 4866], 95.00th=[ 4866], | 99.00th=[ 4866], 99.50th=[ 4866], 99.90th=[ 4866], 99.95th=[ 4866], | 99.99th=[ 4866] bw ( KiB/s): min= 2031, max= 3849, per=94.23%, avg=2676.25, stdev=858.26, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=710KiB/s (727kB/s)(5120KiB/7210msec); 0 zone resets clat (msec): min=92, max=341, avg=210.56, stdev=102.72 lat (msec): min=93, max=341, avg=210.68, stdev=102.69 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 228], 60.00th=[ 228], | 70.00th=[ 268], 80.00th=[ 268], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 1924, max= 4063, per=67.29%, avg=2675.33, stdev=1203.13, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=58.33%, 500=25.00%, >=2000=8.33% cpu : usr=0.04%, sys=6.71%, ctx=461, 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=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=145472: Sat Aug 15 18:06:17 2026 read: IOPS=0, BW=308KiB/s (316kB/s)(2048KiB/6642msec) clat (usec): min=454, max=246061, avg=123257.62, stdev=173670.54 lat (usec): min=455, max=246063, avg=123259.40, stdev=173670.91 clat percentiles (usec): | 1.00th=[ 453], 5.00th=[ 453], 10.00th=[ 453], 20.00th=[ 453], | 30.00th=[ 453], 40.00th=[ 453], 50.00th=[ 453], 60.00th=[246416], | 70.00th=[246416], 80.00th=[246416], 90.00th=[246416], 95.00th=[246416], | 99.00th=[246416], 99.50th=[246416], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 1363, max= 2048, per=60.05%, avg=1705.50, stdev=484.37, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1542KiB/s (1579kB/s)(10.0MiB/6642msec); 0 zone resets clat (msec): min=88, max=2994, avg=628.11, stdev=882.35 lat (msec): min=88, max=2994, avg=628.36, stdev=882.28 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 124], | 30.00th=[ 142], 40.00th=[ 167], 50.00th=[ 309], 60.00th=[ 317], | 70.00th=[ 363], 80.00th=[ 818], 90.00th=[ 961], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 1924, max= 8192, per=76.11%, avg=3026.00, stdev=2531.20, samples=6 iops : min= 1, max= 8, avg= 2.33, stdev= 2.80, samples=6 lat (usec) : 500=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 1000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=5.27%, ctx=78, 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=145473: Sat Aug 15 18:06:17 2026 read: IOPS=0, BW=893KiB/s (915kB/s)(6144KiB/6878msec) clat (usec): min=552, max=1128.9k, avg=355848.97, stdev=405464.05 lat (usec): min=553, max=1128.9k, avg=355850.44, stdev=405464.37 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], | 20.00th=[ 72877], 30.00th=[ 72877], 40.00th=[ 246416], | 50.00th=[ 246416], 60.00th=[ 287310], 70.00th=[ 396362], | 80.00th=[ 396362], 90.00th=[1132463], 95.00th=[1132463], | 99.00th=[1132463], 99.50th=[1132463], 99.90th=[1132463], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 2000, max= 4096, per=89.28%, avg=2535.50, stdev=1040.41, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=0, BW=893KiB/s (915kB/s)(6144KiB/6878msec); 0 zone resets clat (msec): min=122, max=2943, avg=784.84, stdev=1108.53 lat (msec): min=122, max=2943, avg=784.91, stdev=1108.53 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 222], 50.00th=[ 222], 60.00th=[ 251], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 2937], 95.00th=[ 2937], | 99.00th=[ 2937], 99.50th=[ 2937], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 2937] bw ( KiB/s): min= 1965, max= 2723, per=54.92%, avg=2183.50, stdev=360.76, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 2000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=5.53%, ctx=156, 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=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=145474: Sat Aug 15 18:06:17 2026 read: IOPS=0, BW=762KiB/s (781kB/s)(5120KiB/6716msec) clat (msec): min=2, max=368, avg=172.72, stdev=144.51 lat (msec): min=2, max=368, avg=172.72, stdev=144.51 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 3], | 30.00th=[ 63], 40.00th=[ 63], 50.00th=[ 203], 60.00th=[ 203], | 70.00th=[ 228], 80.00th=[ 228], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 2048, max= 6000, per=100.00%, avg=4024.00, stdev=2794.49, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1067KiB/s (1093kB/s)(7168KiB/6716msec); 0 zone resets clat (msec): min=241, max=3453, avg=814.94, stdev=1173.21 lat (msec): min=241, max=3453, avg=815.02, stdev=1173.21 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 262], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 313], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 667], 90.00th=[ 3440], 95.00th=[ 3440], | 99.00th=[ 3440], 99.50th=[ 3440], 99.90th=[ 3440], 99.95th=[ 3440], | 99.99th=[ 3440] bw ( KiB/s): min= 1412, max= 2048, per=47.16%, avg=1875.20, stdev=263.58, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 4=8.33%, 100=8.33%, 250=25.00%, 500=41.67%, 750=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=5.52%, ctx=159, 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=2840KiB/s (2909kB/s), 308KiB/s-994KiB/s (316kB/s-1018kB/s), io=20.0MiB (20.0MB), run=6642-7210msec WRITE: bw=3977KiB/s (4072kB/s), 710KiB/s-1542KiB/s (727kB/s-1579kB/s), io=28.0MiB (29.4MB), run=6642-7210msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145476: Sat Aug 15 18:06:18 2026 read: IOPS=1, BW=1029KiB/s (1053kB/s)(7168KiB/6969msec) clat (msec): min=68, max=3387, avg=709.48, stdev=1194.95 lat (msec): min=68, max=3387, avg=709.48, stdev=1194.95 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 127], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 224], 60.00th=[ 401], | 70.00th=[ 401], 80.00th=[ 600], 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= 1988, max= 4087, per=82.72%, avg=2430.40, stdev=926.32, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=735KiB/s (752kB/s)(5120KiB/6969msec); 0 zone resets clat (msec): min=234, max=442, avg=314.51, stdev=78.66 lat (msec): min=235, max=442, avg=314.81, stdev=78.37 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 2003, max= 4079, per=65.67%, avg=2701.67, stdev=1192.85, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.80%, ctx=72, 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=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=145477: Sat Aug 15 18:06:18 2026 read: IOPS=0, BW=339KiB/s (347kB/s)(2048KiB/6036msec) clat (msec): min=48, max=1055, avg=551.81, stdev=711.71 lat (msec): min=48, max=1055, avg=551.81, stdev=711.71 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 49], 10.00th=[ 49], 20.00th=[ 49], | 30.00th=[ 49], 40.00th=[ 49], 50.00th=[ 49], 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= 2023, max= 2043, per=69.20%, avg=2033.00, stdev=14.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1696KiB/s (1737kB/s)(10.0MiB/6036msec); 0 zone resets clat (msec): min=92, max=2603, avg=464.25, stdev=765.80 lat (msec): min=92, max=2603, avg=464.32, stdev=765.80 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 95], | 30.00th=[ 144], 40.00th=[ 148], 50.00th=[ 150], 60.00th=[ 236], | 70.00th=[ 253], 80.00th=[ 342], 90.00th=[ 584], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 2023, max= 8094, per=98.41%, avg=4048.75, stdev=2858.14, samples=4 iops : min= 1, max= 7, avg= 3.00, stdev= 2.83, samples=4 lat (msec) : 50=8.33%, 100=16.67%, 250=33.33%, 500=16.67%, 750=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.27%, ctx=51, 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=145478: Sat Aug 15 18:06:18 2026 read: IOPS=0, BW=930KiB/s (953kB/s)(6144KiB/6605msec) clat (msec): min=37, max=301, avg=149.74, stdev=112.71 lat (msec): min=37, max=301, avg=149.74, stdev=112.71 clat percentiles (msec): | 1.00th=[ 37], 5.00th=[ 37], 10.00th=[ 37], 20.00th=[ 58], | 30.00th=[ 58], 40.00th=[ 110], 50.00th=[ 110], 60.00th=[ 115], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 2023, max= 8094, per=100.00%, avg=5058.50, stdev=4292.85, samples=2 iops : min= 1, max= 7, avg= 4.00, stdev= 4.24, samples=2 write: IOPS=0, BW=930KiB/s (953kB/s)(6144KiB/6605msec); 0 zone resets clat (msec): min=86, max=2724, avg=865.45, stdev=976.85 lat (msec): min=86, max=2724, avg=865.52, stdev=976.86 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 760], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 2735], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 2023, max= 4039, per=61.55%, avg=2532.00, stdev=1004.71, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 50=8.33%, 100=16.67%, 250=25.00%, 500=25.00%, 1000=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.23%, ctx=57, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145479: Sat Aug 15 18:06:18 2026 read: IOPS=0, BW=811KiB/s (830kB/s)(5120KiB/6316msec) clat (msec): min=76, max=139, avg=95.49, stdev=25.48 lat (msec): min=76, max=139, avg=95.49, stdev=25.48 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 77], | 30.00th=[ 82], 40.00th=[ 82], 50.00th=[ 84], 60.00th=[ 84], | 70.00th=[ 97], 80.00th=[ 97], 90.00th=[ 140], 95.00th=[ 140], | 99.00th=[ 140], 99.50th=[ 140], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 2019, max= 6071, per=100.00%, avg=4045.00, stdev=2865.20, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1135KiB/s (1162kB/s)(7168KiB/6316msec); 0 zone resets clat (msec): min=286, max=2617, avg=767.94, stdev=868.84 lat (msec): min=286, max=2617, avg=768.08, stdev=868.86 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 334], 60.00th=[ 384], | 70.00th=[ 384], 80.00th=[ 1133], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 1988, max= 4039, per=58.90%, avg=2423.20, stdev=903.48, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=33.33%, 250=8.33%, 500=41.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.18%, ctx=73, 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=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=2939KiB/s (3009kB/s), 339KiB/s-1029KiB/s (347kB/s-1053kB/s), io=20.0MiB (20.0MB), run=6036-6969msec WRITE: bw=4114KiB/s (4213kB/s), 735KiB/s-1696KiB/s (752kB/s-1737kB/s), io=28.0MiB (29.4MB), run=6036-6969msec 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=145486: Sat Aug 15 18:06:34 2026 read: IOPS=0, BW=2785KiB/s (2852kB/s)(12.0MiB/4412msec) clat (msec): min=390, max=2156, avg=1393.77, stdev=907.56 lat (msec): min=390, max=2156, avg=1393.77, stdev=907.56 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 1636], 50.00th=[ 1636], 60.00th=[ 1636], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7922, max= 8175, per=100.00%, avg=8048.50, stdev=178.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.75%, ctx=53, 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=145487: Sat Aug 15 18:06:34 2026 read: IOPS=0, BW=2010KiB/s (2058kB/s)(4096KiB/2038msec) clat (nsec): min=426419k, max=426419k, avg=426419028.00, stdev= 0.00 lat (nsec): min=426422k, max=426422k, avg=426421948.00, stdev= 0.00 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=[ 426], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 5520, max= 5520, per=100.00%, avg=5520.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=4020KiB/s (4116kB/s)(8192KiB/2038msec); 0 zone resets clat (msec): min=501, max=1001, avg=751.43, stdev=353.53 lat (msec): min=503, max=1001, avg=752.49, stdev=352.54 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 1003], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.22%, ctx=63, 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=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=145488: Sat Aug 15 18:06:34 2026 write: IOPS=0, BW=2970KiB/s (3042kB/s)(12.0MiB/4137msec); 0 zone resets clat (msec): min=1109, max=1690, avg=1325.07, stdev=318.34 lat (msec): min=1110, max=1691, avg=1325.56, stdev=318.25 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=5.27%, ctx=77, 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=145490: Sat Aug 15 18:06:34 2026 write: IOPS=0, BW=3427KiB/s (3509kB/s)(12.0MiB/3586msec); 0 zone resets clat (msec): min=638, max=1840, avg=1172.22, stdev=612.36 lat (msec): min=638, max=1841, avg=1172.76, stdev=612.27 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1036], | 70.00th=[ 1838], 80.00th=[ 1838], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 5657, max= 8015, per=86.31%, avg=6836.00, stdev=1667.36, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.06%, sys=2.87%, ctx=44, 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=3714KiB/s (3803kB/s), 2010KiB/s-2785KiB/s (2058kB/s-2852kB/s), io=16.0MiB (16.8MB), run=2038-4412msec WRITE: bw=7921KiB/s (8111kB/s), 2970KiB/s-4020KiB/s (3042kB/s-4116kB/s), io=32.0MiB (33.6MB), run=2038-4137msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145489: Sat Aug 15 18:06:34 2026 read: IOPS=0, BW=3382KiB/s (3464kB/s)(12.0MiB/3633msec) clat (msec): min=949, max=1327, avg=1143.86, stdev=189.29 lat (msec): min=949, max=1327, avg=1143.86, stdev=189.29 clat percentiles (msec): | 1.00th=[ 953], 5.00th=[ 953], 10.00th=[ 953], 20.00th=[ 953], | 30.00th=[ 953], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7937, max= 8110, per=100.00%, avg=8023.50, stdev=122.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.06%, sys=10.55%, ctx=262, 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=145491: Sat Aug 15 18:06:34 2026 read: IOPS=0, BW=1009KiB/s (1033kB/s)(4096KiB/4060msec) clat (nsec): min=949063k, max=949063k, avg=949063408.00, stdev= 0.00 lat (nsec): min=949066k, max=949066k, avg=949065906.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 953], 5.00th=[ 953], 10.00th=[ 953], 20.00th=[ 953], | 30.00th=[ 953], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7571, max= 7571, per=100.00%, avg=7571.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2018KiB/s (2066kB/s)(8192KiB/4060msec); 0 zone resets clat (msec): min=1286, max=1594, avg=1440.03, stdev=217.75 lat (msec): min=1288, max=1597, avg=1442.89, stdev=218.15 clat percentiles (msec): | 1.00th=[ 1284], 5.00th=[ 1284], 10.00th=[ 1284], 20.00th=[ 1284], | 30.00th=[ 1284], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1603], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] 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) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.19%, ctx=81, 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=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=145492: Sat Aug 15 18:06:34 2026 write: IOPS=0, BW=2582KiB/s (2643kB/s)(12.0MiB/4760msec); 0 zone resets clat (msec): min=328, max=2362, avg=1480.70, stdev=1043.90 lat (msec): min=328, max=2363, avg=1481.58, stdev=1044.04 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 1754], 50.00th=[ 1754], 60.00th=[ 1754], | 70.00th=[ 2366], 80.00th=[ 2366], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.11%, sys=2.19%, ctx=49, 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=145493: Sat Aug 15 18:06:34 2026 write: IOPS=0, BW=3184KiB/s (3261kB/s)(12.0MiB/3859msec); 0 zone resets clat (msec): min=411, max=1692, avg=1191.18, stdev=684.74 lat (msec): min=411, max=1695, avg=1192.38, stdev=685.63 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 414], 10.00th=[ 414], 20.00th=[ 414], | 30.00th=[ 414], 40.00th=[ 1469], 50.00th=[ 1469], 60.00th=[ 1469], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 8015, max= 8126, per=100.00%, avg=8070.50, stdev=78.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.57%, ctx=58, 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=4035KiB/s (4132kB/s), 1009KiB/s-3382KiB/s (1033kB/s-3464kB/s), io=16.0MiB (16.8MB), run=3633-4060msec WRITE: bw=6884KiB/s (7049kB/s), 2018KiB/s-3184KiB/s (2066kB/s-3261kB/s), io=32.0MiB (33.6MB), run=3859-4760msec