== sanity test 398b: DIO and buffer IO race ============== 02:13:17 (1788934397) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.28102 s, 9.5 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179777: Wed Sep 9 02:15:29 2026 read: IOPS=12, BW=51.0KiB/s (53.2kB/s)(5992KiB/115313msec) clat (usec): min=29, max=797418, avg=41128.36, stdev=32387.13 lat (usec): min=29, max=797419, avg=41130.69, stdev=32386.83 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 586], 10.00th=[ 15008], 20.00th=[ 20317], | 30.00th=[ 25297], 40.00th=[ 30540], 50.00th=[ 35914], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 58983], 90.00th=[ 72877], 95.00th=[ 86508], | 99.00th=[128451], 99.50th=[145753], 99.90th=[225444], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 103, per=24.75%, avg=51.49, stdev=18.20, samples=228 iops : min= 1, max= 25, avg=12.21, stdev= 4.57, samples=228 write: IOPS=13, BW=54.6KiB/s (55.9kB/s)(6296KiB/115313msec); 0 zone resets clat (usec): min=941, max=350690, avg=33892.16, stdev=34703.97 lat (usec): min=942, max=350692, avg=33893.69, stdev=34703.90 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1680], 20.00th=[ 3752], | 30.00th=[ 7570], 40.00th=[ 16581], 50.00th=[ 24511], 60.00th=[ 33424], | 70.00th=[ 44827], 80.00th=[ 59507], 90.00th=[ 80217], 95.00th=[ 99091], | 99.00th=[147850], 99.50th=[173016], 99.90th=[225444], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 7, max= 143, per=25.02%, avg=54.54, stdev=22.78, samples=226 iops : min= 1, max= 35, avg=12.97, stdev= 5.70, samples=226 lat (usec) : 50=0.20%, 100=1.95%, 250=0.23%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=6.64%, 4=4.07%, 10=6.54%, 20=12.24%, 50=40.62% lat (msec) : 100=23.34%, 250=3.84%, 500=0.03%, 1000=0.03% cpu : usr=0.07%, sys=5.56%, ctx=6502, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179778: Wed Sep 9 02:15:29 2026 read: IOPS=12, BW=51.6KiB/s (52.8kB/s)(5940KiB/115103msec) clat (usec): min=47, max=204749, avg=41810.96, stdev=26661.19 lat (usec): min=48, max=204750, avg=41814.62, stdev=26658.69 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 9765], 10.00th=[ 15533], 20.00th=[ 21627], | 30.00th=[ 26084], 40.00th=[ 30540], 50.00th=[ 36439], 60.00th=[ 43254], | 70.00th=[ 50594], 80.00th=[ 60556], 90.00th=[ 74974], 95.00th=[ 90702], | 99.00th=[131597], 99.50th=[154141], 99.90th=[185598], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 7, max= 104, per=24.63%, avg=51.23, stdev=18.74, samples=226 iops : min= 1, max= 26, avg=12.14, stdev= 4.70, samples=226 write: IOPS=13, BW=55.2KiB/s (56.5kB/s)(6348KiB/115103msec); 0 zone resets clat (usec): min=869, max=769315, avg=33157.41, stdev=37889.92 lat (usec): min=870, max=769317, avg=33161.53, stdev=37887.80 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1172], 10.00th=[ 1434], 20.00th=[ 3326], | 30.00th=[ 6652], 40.00th=[ 14484], 50.00th=[ 24511], 60.00th=[ 32637], | 70.00th=[ 42206], 80.00th=[ 56361], 90.00th=[ 80217], 95.00th=[ 99091], | 99.00th=[139461], 99.50th=[152044], 99.90th=[231736], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 7, max= 166, per=25.07%, avg=54.65, stdev=23.28, samples=226 iops : min= 1, max= 41, avg=13.01, stdev= 5.85, samples=226 lat (usec) : 50=0.16%, 100=1.95%, 250=0.20%, 500=0.03%, 1000=0.20% lat (msec) : 2=6.80%, 4=4.59%, 10=6.64%, 20=10.09%, 50=41.83% lat (msec) : 100=23.57%, 250=3.91%, 1000=0.03% cpu : usr=0.08%, sys=5.56%, ctx=6487, 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=179779: Wed Sep 9 02:15:29 2026 read: IOPS=13, BW=53.1KiB/s (54.4kB/s)(6028KiB/113532msec) clat (usec): min=44, max=796177, avg=41574.13, stdev=31894.14 lat (usec): min=45, max=796177, avg=41579.45, stdev=31894.39 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 10159], 10.00th=[ 16450], 20.00th=[ 21103], | 30.00th=[ 25297], 40.00th=[ 30278], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 58983], 90.00th=[ 74974], 95.00th=[ 90702], | 99.00th=[125305], 99.50th=[141558], 99.90th=[164627], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 7, max= 101, per=25.25%, avg=52.52, stdev=19.15, samples=224 iops : min= 1, max= 25, avg=12.46, stdev= 4.84, samples=224 write: IOPS=13, BW=55.1KiB/s (56.5kB/s)(6260KiB/113532msec); 0 zone resets clat (usec): min=911, max=316254, avg=32297.20, stdev=34914.11 lat (usec): min=912, max=316255, avg=32299.69, stdev=34913.60 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1532], 20.00th=[ 3458], | 30.00th=[ 6456], 40.00th=[ 14484], 50.00th=[ 22938], 60.00th=[ 30016], | 70.00th=[ 41681], 80.00th=[ 56361], 90.00th=[ 78119], 95.00th=[ 96994], | 99.00th=[149947], 99.50th=[168821], 99.90th=[283116], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 119, per=25.19%, avg=54.91, stdev=21.85, samples=222 iops : min= 1, max= 29, avg=13.08, stdev= 5.49, samples=222 lat (usec) : 50=0.20%, 100=1.63%, 250=0.20%, 500=0.03%, 1000=0.16% lat (msec) : 2=6.45%, 4=4.69%, 10=7.29%, 20=11.56%, 50=41.47% lat (msec) : 100=22.62%, 250=3.58%, 500=0.10%, 1000=0.03% cpu : usr=0.08%, sys=5.59%, ctx=6393, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179780: Wed Sep 9 02:15:29 2026 read: IOPS=13, BW=52.9KiB/s (54.1kB/s)(6052KiB/114490msec) clat (usec): min=37, max=242747, avg=40976.62, stdev=26732.92 lat (usec): min=37, max=242748, avg=40983.03, stdev=26735.74 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 6915], 10.00th=[ 14615], 20.00th=[ 20579], | 30.00th=[ 25035], 40.00th=[ 30278], 50.00th=[ 35914], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 59507], 90.00th=[ 74974], 95.00th=[ 89654], | 99.00th=[130548], 99.50th=[152044], 99.90th=[193987], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 15, max= 103, per=25.37%, avg=52.76, stdev=19.31, samples=224 iops : min= 3, max= 25, avg=12.54, stdev= 4.87, samples=224 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(6236KiB/114490msec); 0 zone resets clat (usec): min=972, max=922964, avg=33439.77, stdev=40946.82 lat (usec): min=973, max=922966, avg=33446.33, stdev=40948.40 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1729], 20.00th=[ 3490], | 30.00th=[ 6587], 40.00th=[ 15008], 50.00th=[ 23462], 60.00th=[ 31589], | 70.00th=[ 41681], 80.00th=[ 57934], 90.00th=[ 80217], 95.00th=[104334], | 99.00th=[141558], 99.50th=[166724], 99.90th=[231736], 99.95th=[926942], | 99.99th=[926942] bw ( KiB/s): min= 15, max= 133, per=24.88%, avg=54.24, stdev=21.06, samples=224 iops : min= 3, max= 33, avg=12.91, stdev= 5.29, samples=224 lat (usec) : 50=0.29%, 100=1.76%, 250=0.23%, 500=0.03%, 1000=0.13% lat (msec) : 2=5.96%, 4=5.14%, 10=7.32%, 20=12.01%, 50=40.36% lat (msec) : 100=22.49%, 250=4.23%, 1000=0.03% cpu : usr=0.07%, sys=5.54%, ctx=6488, majf=0, minf=18 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=208KiB/s (213kB/s), 51.6KiB/s-53.1KiB/s (52.8kB/s-54.4kB/s), io=23.4MiB (24.6MB), run=113532-115313msec WRITE: bw=218KiB/s (223kB/s), 54.5KiB/s-55.2KiB/s (55.8kB/s-56.5kB/s), io=24.6MiB (25.7MB), run=113532-115313msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179773: Wed Sep 9 02:16:07 2026 read: IOPS=9, BW=39.4KiB/s (40.4kB/s)(5992KiB/151976msec) clat (msec): min=4, max=788, avg=40.68, stdev=40.78 lat (msec): min=4, max=788, avg=40.69, stdev=40.78 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 60], 90.00th=[ 88], 95.00th=[ 113], | 99.00th=[ 178], 99.50th=[ 201], 99.90th=[ 359], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 149, per=25.37%, avg=39.58, stdev=26.38, samples=295 iops : min= 1, max= 37, avg= 9.26, stdev= 6.64, samples=295 write: IOPS=10, BW=41.4KiB/s (42.4kB/s)(6296KiB/151976msec); 0 zone resets clat (msec): min=10, max=356, avg=57.61, stdev=37.82 lat (msec): min=10, max=356, avg=57.61, stdev=37.82 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 55], | 70.00th=[ 67], 80.00th=[ 87], 90.00th=[ 111], 95.00th=[ 132], | 99.00th=[ 178], 99.50th=[ 218], 99.90th=[ 284], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 120, per=25.08%, avg=41.14, stdev=24.93, samples=298 iops : min= 1, max= 30, avg= 9.65, stdev= 6.29, samples=298 lat (msec) : 10=2.77%, 20=16.08%, 50=45.74%, 100=24.84%, 250=10.38% lat (msec) : 500=0.16%, 1000=0.03% cpu : usr=0.05%, sys=1.94%, ctx=4836, 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=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=179774: Wed Sep 9 02:16:07 2026 read: IOPS=9, BW=39.1KiB/s (39.0kB/s)(5940KiB/152077msec) clat (msec): min=5, max=894, avg=39.79, stdev=40.87 lat (msec): min=5, max=894, avg=39.79, stdev=40.87 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 88], 95.00th=[ 117], | 99.00th=[ 171], 99.50th=[ 194], 99.90th=[ 249], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 7, max= 136, per=25.29%, avg=39.45, stdev=26.84, samples=294 iops : min= 1, max= 34, avg= 9.22, stdev= 6.77, samples=294 write: IOPS=10, BW=41.7KiB/s (42.7kB/s)(6348KiB/152077msec); 0 zone resets clat (msec): min=10, max=478, avg=58.35, stdev=39.93 lat (msec): min=10, max=478, avg=58.35, stdev=39.93 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 88], 90.00th=[ 110], 95.00th=[ 133], | 99.00th=[ 194], 99.50th=[ 230], 99.90th=[ 300], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 7, max= 119, per=25.31%, avg=41.50, stdev=24.51, samples=299 iops : min= 1, max= 29, avg= 9.74, stdev= 6.17, samples=299 lat (msec) : 10=2.86%, 20=17.15%, 50=44.99%, 100=24.32%, 250=10.58% lat (msec) : 500=0.07%, 1000=0.03% cpu : usr=0.06%, sys=1.83%, ctx=4816, 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=179775: Wed Sep 9 02:16:07 2026 read: IOPS=9, BW=39.6KiB/s (40.5kB/s)(6028KiB/152358msec) clat (msec): min=5, max=301, avg=39.40, stdev=34.51 lat (msec): min=5, max=301, avg=39.40, stdev=34.51 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=[ 42], 80.00th=[ 57], 90.00th=[ 85], 95.00th=[ 110], | 99.00th=[ 171], 99.50th=[ 192], 99.90th=[ 266], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 7, max= 152, per=25.41%, avg=39.64, stdev=26.54, samples=296 iops : min= 1, max= 38, avg= 9.27, stdev= 6.67, samples=296 write: IOPS=10, BW=41.1KiB/s (42.1kB/s)(6260KiB/152358msec); 0 zone resets clat (msec): min=8, max=909, avg=59.18, stdev=46.46 lat (msec): min=8, max=909, avg=59.18, stdev=46.46 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 56], | 70.00th=[ 70], 80.00th=[ 87], 90.00th=[ 114], 95.00th=[ 138], | 99.00th=[ 199], 99.50th=[ 239], 99.90th=[ 472], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 120, per=25.05%, avg=41.08, stdev=25.44, samples=297 iops : min= 1, max= 30, avg= 9.63, stdev= 6.42, samples=297 lat (msec) : 10=2.70%, 20=16.28%, 50=46.55%, 100=24.12%, 250=10.12% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.06%, sys=1.95%, ctx=4895, 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=179776: Wed Sep 9 02:16:07 2026 read: IOPS=9, BW=39.5KiB/s (40.5kB/s)(6052KiB/153086msec) clat (msec): min=5, max=360, avg=40.43, stdev=37.54 lat (msec): min=5, max=360, avg=40.43, stdev=37.54 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 44], 80.00th=[ 61], 90.00th=[ 91], 95.00th=[ 118], | 99.00th=[ 178], 99.50th=[ 201], 99.90th=[ 326], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 143, per=25.60%, avg=39.93, stdev=26.73, samples=296 iops : min= 1, max= 35, avg= 9.34, stdev= 6.73, samples=296 write: IOPS=10, BW=40.7KiB/s (41.7kB/s)(6236KiB/153086msec); 0 zone resets clat (msec): min=10, max=906, avg=58.72, stdev=45.06 lat (msec): min=10, max=906, avg=58.72, stdev=45.06 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 88], 90.00th=[ 113], 95.00th=[ 132], | 99.00th=[ 199], 99.50th=[ 234], 99.90th=[ 284], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 119, per=24.74%, avg=40.57, stdev=24.76, samples=300 iops : min= 1, max= 29, avg= 9.51, stdev= 6.23, samples=300 lat (msec) : 10=2.96%, 20=18.29%, 50=43.42%, 100=24.25%, 250=10.84% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.07%, sys=1.89%, ctx=4910, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=157KiB/s (161kB/s), 39.1KiB/s-39.6KiB/s (39.0kB/s-40.5kB/s), io=23.4MiB (24.6MB), run=151976-153086msec WRITE: bw=164KiB/s (168kB/s), 40.7KiB/s-41.7KiB/s (41.7kB/s-42.7kB/s), io=24.6MiB (25.7MB), run=151976-153086msec 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=179820: Wed Sep 9 02:16:46 2026 read: IOPS=12, BW=205KiB/s (210kB/s)(5920KiB/28830msec) clat (usec): min=38, max=221483, avg=42051.09, stdev=25551.71 lat (usec): min=38, max=221485, avg=42052.39, stdev=25551.63 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 67], 10.00th=[ 12649], 20.00th=[ 24511], | 30.00th=[ 28967], 40.00th=[ 33424], 50.00th=[ 38011], 60.00th=[ 45351], | 70.00th=[ 50070], 80.00th=[ 57934], 90.00th=[ 73925], 95.00th=[ 82314], | 99.00th=[114820], 99.50th=[143655], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 95, max= 349, per=24.67%, avg=202.79, stdev=59.27, samples=56 iops : min= 5, max= 21, avg=11.88, stdev= 3.72, samples=56 write: IOPS=13, BW=221KiB/s (226kB/s)(6368KiB/28830msec); 0 zone resets clat (usec): min=1463, max=167713, avg=32665.67, stdev=31876.45 lat (usec): min=1464, max=167715, avg=32678.17, stdev=31878.79 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2212], 10.00th=[ 3163], 20.00th=[ 5145], | 30.00th=[ 8848], 40.00th=[ 14615], 50.00th=[ 23987], 60.00th=[ 31327], | 70.00th=[ 42730], 80.00th=[ 58459], 90.00th=[ 77071], 95.00th=[ 94897], | 99.00th=[135267], 99.50th=[158335], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 63, max= 411, per=25.43%, avg=219.98, stdev=77.65, samples=56 iops : min= 3, max= 25, avg=12.96, stdev= 4.90, samples=56 lat (usec) : 50=0.39%, 100=2.99%, 250=0.39%, 500=0.13% lat (msec) : 2=2.08%, 4=5.73%, 10=9.11%, 20=9.11%, 50=42.58% lat (msec) : 100=24.48%, 250=2.99% cpu : usr=0.09%, sys=6.63%, ctx=1752, 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=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=179821: Wed Sep 9 02:16:46 2026 read: IOPS=12, BW=199KiB/s (204kB/s)(5744KiB/28856msec) clat (usec): min=38, max=172982, avg=42057.02, stdev=27189.27 lat (usec): min=38, max=172983, avg=42058.14, stdev=27189.26 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 67], 10.00th=[ 13829], 20.00th=[ 23462], | 30.00th=[ 28443], 40.00th=[ 32637], 50.00th=[ 37487], 60.00th=[ 43254], | 70.00th=[ 50594], 80.00th=[ 60556], 90.00th=[ 73925], 95.00th=[ 89654], | 99.00th=[133694], 99.50th=[139461], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 21, max= 379, per=24.17%, avg=198.68, stdev=68.45, samples=56 iops : min= 1, max= 23, avg=11.62, stdev= 4.30, samples=56 write: IOPS=14, BW=227KiB/s (232kB/s)(6544KiB/28856msec); 0 zone resets clat (usec): min=1471, max=173489, avg=32666.70, stdev=31758.38 lat (usec): min=1473, max=173493, avg=32668.76, stdev=31758.43 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1991], 10.00th=[ 2933], 20.00th=[ 5866], | 30.00th=[ 8848], 40.00th=[ 15533], 50.00th=[ 23725], 60.00th=[ 30278], | 70.00th=[ 40109], 80.00th=[ 55837], 90.00th=[ 77071], 95.00th=[ 99091], | 99.00th=[135267], 99.50th=[147850], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 62, max= 473, per=25.86%, avg=223.73, stdev=94.19, samples=56 iops : min= 3, max= 29, avg=13.20, stdev= 5.95, samples=56 lat (usec) : 50=0.26%, 100=3.39%, 250=0.65%, 500=0.13% lat (msec) : 2=2.86%, 4=4.56%, 10=9.51%, 20=9.24%, 50=41.93% lat (msec) : 100=23.05%, 250=4.43% cpu : usr=0.05%, sys=6.46%, ctx=1727, 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=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=179822: Wed Sep 9 02:16:46 2026 read: IOPS=13, BW=215KiB/s (220kB/s)(6256KiB/29106msec) clat (usec): min=43, max=194409, avg=42447.15, stdev=27331.99 lat (usec): min=44, max=194409, avg=42448.30, stdev=27332.02 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 13435], 20.00th=[ 21890], | 30.00th=[ 26870], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 45876], | 70.00th=[ 52167], 80.00th=[ 63177], 90.00th=[ 74974], 95.00th=[ 87557], | 99.00th=[126354], 99.50th=[183501], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 63, max= 411, per=26.25%, avg=215.77, stdev=71.44, samples=57 iops : min= 3, max= 25, avg=12.70, stdev= 4.50, samples=57 write: IOPS=12, BW=207KiB/s (212kB/s)(6032KiB/29106msec); 0 zone resets clat (usec): min=1462, max=230828, avg=32939.02, stdev=29953.72 lat (usec): min=1464, max=230829, avg=32943.58, stdev=29954.92 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 2376], 10.00th=[ 3884], 20.00th=[ 6718], | 30.00th=[ 11994], 40.00th=[ 17957], 50.00th=[ 25560], 60.00th=[ 31589], | 70.00th=[ 43254], 80.00th=[ 56886], 90.00th=[ 73925], 95.00th=[ 91751], | 99.00th=[119014], 99.50th=[137364], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 31, max= 473, per=23.77%, avg=205.58, stdev=83.65, samples=57 iops : min= 1, max= 29, avg=12.05, stdev= 5.25, samples=57 lat (usec) : 50=0.26%, 100=4.04%, 250=0.39%, 1000=0.13% lat (msec) : 2=2.08%, 4=3.26%, 10=8.85%, 20=10.03%, 50=42.19% lat (msec) : 100=25.65%, 250=3.12% cpu : usr=0.07%, sys=6.29%, ctx=1804, 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=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=179823: Wed Sep 9 02:16:46 2026 read: IOPS=13, BW=213KiB/s (218kB/s)(6032KiB/28319msec) clat (usec): min=33, max=208759, avg=39607.65, stdev=29197.54 lat (usec): min=34, max=208761, avg=39612.91, stdev=29195.22 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 91], 20.00th=[ 18744], | 30.00th=[ 25560], 40.00th=[ 30802], 50.00th=[ 36439], 60.00th=[ 41157], | 70.00th=[ 50070], 80.00th=[ 58459], 90.00th=[ 73925], 95.00th=[ 85459], | 99.00th=[166724], 99.50th=[189793], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 63, max= 351, per=25.75%, avg=211.67, stdev=64.66, samples=55 iops : min= 3, max= 21, avg=12.44, stdev= 4.07, samples=55 write: IOPS=13, BW=221KiB/s (226kB/s)(6256KiB/28319msec); 0 zone resets clat (usec): min=1365, max=183850, avg=33398.26, stdev=31525.04 lat (usec): min=1368, max=183853, avg=33403.57, stdev=31522.54 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2040], 10.00th=[ 3523], 20.00th=[ 6390], | 30.00th=[ 10028], 40.00th=[ 16188], 50.00th=[ 25822], 60.00th=[ 32113], | 70.00th=[ 42730], 80.00th=[ 57410], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[129500], 99.50th=[173016], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 94, max= 479, per=25.61%, avg=221.51, stdev=75.71, samples=55 iops : min= 5, max= 29, avg=13.05, stdev= 4.74, samples=55 lat (usec) : 50=0.65%, 100=4.43%, 250=1.04%, 500=0.13% lat (msec) : 2=2.73%, 4=3.78%, 10=9.51%, 20=11.20%, 50=39.32% lat (msec) : 100=23.83%, 250=3.39% cpu : usr=0.12%, sys=6.09%, ctx=1665, majf=0, minf=18 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=823KiB/s (843kB/s), 199KiB/s-215KiB/s (204kB/s-220kB/s), io=23.4MiB (24.5MB), run=28319-29106msec WRITE: bw=866KiB/s (887kB/s), 207KiB/s-227KiB/s (212kB/s-232kB/s), io=24.6MiB (25.8MB), run=28319-29106msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179824: Wed Sep 9 02:16:58 2026 read: IOPS=8, BW=142KiB/s (145kB/s)(5920KiB/41729msec) clat (msec): min=8, max=216, avg=47.07, stdev=34.94 lat (msec): min=8, max=216, avg=47.07, stdev=34.94 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 50], 80.00th=[ 66], 90.00th=[ 97], 95.00th=[ 123], | 99.00th=[ 182], 99.50th=[ 207], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 31, max= 351, per=24.57%, avg=140.56, stdev=73.72, samples=82 iops : min= 1, max= 21, avg= 8.04, stdev= 4.67, samples=82 write: IOPS=9, BW=153KiB/s (156kB/s)(6368KiB/41729msec); 0 zone resets clat (msec): min=15, max=259, avg=60.39, stdev=39.71 lat (msec): min=15, max=259, avg=60.39, stdev=39.71 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 49], 60.00th=[ 56], | 70.00th=[ 70], 80.00th=[ 84], 90.00th=[ 108], 95.00th=[ 142], | 99.00th=[ 239], 99.50th=[ 245], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 22, max= 381, per=25.40%, avg=152.68, stdev=76.86, samples=82 iops : min= 1, max= 23, avg= 8.79, stdev= 4.81, samples=82 lat (msec) : 10=0.52%, 20=7.81%, 50=52.21%, 100=28.65%, 250=10.68% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.04%, ctx=1261, 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=179825: Wed Sep 9 02:16:58 2026 read: IOPS=8, BW=138KiB/s (141kB/s)(5744KiB/41580msec) clat (msec): min=6, max=220, avg=44.75, stdev=33.40 lat (msec): min=6, max=220, avg=44.75, stdev=33.40 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 47], 80.00th=[ 60], 90.00th=[ 91], 95.00th=[ 111], | 99.00th=[ 190], 99.50th=[ 201], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 22, max= 445, per=24.55%, avg=140.43, stdev=82.39, samples=81 iops : min= 1, max= 27, avg= 8.02, stdev= 5.18, samples=81 write: IOPS=9, BW=157KiB/s (161kB/s)(6544KiB/41580msec); 0 zone resets clat (msec): min=10, max=245, avg=61.87, stdev=39.68 lat (msec): min=10, max=245, avg=61.88, stdev=39.68 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 71], 80.00th=[ 87], 90.00th=[ 117], 95.00th=[ 148], | 99.00th=[ 188], 99.50th=[ 232], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 31, max= 384, per=26.16%, avg=157.23, stdev=78.64, samples=82 iops : min= 1, max= 24, avg= 9.09, stdev= 4.98, samples=82 lat (msec) : 10=0.65%, 20=9.51%, 50=51.17%, 100=26.82%, 250=11.85% cpu : usr=0.05%, sys=2.17%, ctx=1291, 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=179826: Wed Sep 9 02:16:58 2026 read: IOPS=9, BW=149KiB/s (153kB/s)(6256KiB/41870msec) clat (msec): min=7, max=222, avg=46.71, stdev=35.95 lat (msec): min=7, max=222, avg=46.71, stdev=35.95 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 50], 80.00th=[ 64], 90.00th=[ 92], 95.00th=[ 124], | 99.00th=[ 186], 99.50th=[ 207], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 31, max= 478, per=26.18%, avg=149.76, stdev=87.65, samples=82 iops : min= 1, max= 29, avg= 8.61, stdev= 5.49, samples=82 write: IOPS=9, BW=144KiB/s (148kB/s)(6032KiB/41870msec); 0 zone resets clat (msec): min=16, max=237, avg=62.30, stdev=39.45 lat (msec): min=16, max=237, avg=62.30, stdev=39.45 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 58], | 70.00th=[ 72], 80.00th=[ 90], 90.00th=[ 114], 95.00th=[ 140], | 99.00th=[ 213], 99.50th=[ 224], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 31, max= 320, per=23.60%, avg=141.83, stdev=68.12, samples=82 iops : min= 1, max= 20, avg= 8.11, stdev= 4.31, samples=82 lat (msec) : 10=1.43%, 20=7.42%, 50=52.34%, 100=26.56%, 250=12.24% cpu : usr=0.07%, sys=2.05%, ctx=1330, 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=179827: Wed Sep 9 02:16:58 2026 read: IOPS=9, BW=145KiB/s (148kB/s)(6032KiB/41635msec) clat (msec): min=7, max=235, avg=47.30, stdev=33.33 lat (msec): min=7, max=235, avg=47.30, stdev=33.32 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 38], 60.00th=[ 43], | 70.00th=[ 51], 80.00th=[ 63], 90.00th=[ 97], 95.00th=[ 118], | 99.00th=[ 163], 99.50th=[ 201], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 22, max= 351, per=25.84%, avg=147.79, stdev=73.71, samples=80 iops : min= 1, max= 21, avg= 8.49, stdev= 4.64, samples=80 write: IOPS=9, BW=150KiB/s (154kB/s)(6256KiB/41635msec); 0 zone resets clat (msec): min=15, max=269, avg=59.86, stdev=37.34 lat (msec): min=15, max=269, avg=59.86, stdev=37.34 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 65], 80.00th=[ 84], 90.00th=[ 120], 95.00th=[ 138], | 99.00th=[ 176], 99.50th=[ 188], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 383, per=25.08%, avg=150.73, stdev=79.62, samples=82 iops : min= 1, max= 23, avg= 8.67, stdev= 4.98, samples=82 lat (msec) : 10=0.65%, 20=7.03%, 50=53.65%, 100=27.34%, 250=11.20% lat (msec) : 500=0.13% cpu : usr=0.03%, sys=2.13%, ctx=1263, 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=572KiB/s (586kB/s), 138KiB/s-149KiB/s (141kB/s-153kB/s), io=23.4MiB (24.5MB), run=41580-41870msec WRITE: bw=602KiB/s (616kB/s), 144KiB/s-157KiB/s (148kB/s-161kB/s), io=24.6MiB (25.8MB), run=41580-41870msec 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=179840: Wed Sep 9 02:17:18 2026 read: IOPS=0, BW=893KiB/s (915kB/s)(7168KiB/8023msec) clat (usec): min=477, max=3598.7k, avg=1005138.36, stdev=1620452.66 lat (usec): min=478, max=3598.7k, avg=1005139.86, stdev=1620453.00 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], | 20.00th=[ 490], 30.00th=[ 4293], 40.00th=[ 4293], | 50.00th=[ 123208], 60.00th=[ 173016], 70.00th=[ 173016], | 80.00th=[3137340], 90.00th=[3607102], 95.00th=[3607102], | 99.00th=[3607102], 99.50th=[3607102], 99.90th=[3607102], | 99.95th=[3607102], 99.99th=[3607102] bw ( KiB/s): min= 2048, max= 4087, per=100.00%, avg=3404.67, stdev=1174.91, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 write: IOPS=0, BW=638KiB/s (653kB/s)(5120KiB/8023msec); 0 zone resets clat (msec): min=123, max=249, avg=179.60, stdev=51.46 lat (msec): min=124, max=249, avg=179.66, stdev=51.46 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 125], | 30.00th=[ 134], 40.00th=[ 134], 50.00th=[ 192], 60.00th=[ 192], | 70.00th=[ 199], 80.00th=[ 199], 90.00th=[ 251], 95.00th=[ 251], | 99.00th=[ 251], 99.50th=[ 251], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 2039, max= 2048, per=61.81%, avg=2043.50, stdev= 6.36, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (usec) : 500=16.67% lat (msec) : 10=8.33%, 250=58.33%, >=2000=16.67% cpu : usr=0.00%, sys=7.73%, ctx=990, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179841: Wed Sep 9 02:17:18 2026 read: IOPS=0, BW=236KiB/s (242kB/s)(2048KiB/8672msec) clat (usec): min=468, max=3394.9k, avg=1697700.23, stdev=2400247.65 lat (usec): min=470, max=3394.9k, avg=1697702.42, stdev=2400248.77 clat percentiles (usec): | 1.00th=[ 469], 5.00th=[ 469], 10.00th=[ 469], | 20.00th=[ 469], 30.00th=[ 469], 40.00th=[ 469], | 50.00th=[ 469], 60.00th=[3405775], 70.00th=[3405775], | 80.00th=[3405775], 90.00th=[3405775], 95.00th=[3405775], | 99.00th=[3405775], 99.50th=[3405775], 99.90th=[3405775], | 99.95th=[3405775], 99.99th=[3405775] bw ( KiB/s): min= 1992, max= 2031, per=85.20%, avg=2011.50, stdev=27.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1181KiB/s (1209kB/s)(10.0MiB/8672msec); 0 zone resets clat (msec): min=106, max=2690, avg=522.39, stdev=771.02 lat (msec): min=106, max=2690, avg=522.47, stdev=771.00 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 117], | 30.00th=[ 180], 40.00th=[ 259], 50.00th=[ 305], 60.00th=[ 313], | 70.00th=[ 380], 80.00th=[ 430], 90.00th=[ 443], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 1973, max= 6059, per=90.88%, avg=3004.50, stdev=1694.67, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (usec) : 500=8.33% lat (msec) : 250=25.00%, 500=50.00%, >=2000=16.67% cpu : usr=0.00%, sys=9.88%, ctx=702, 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=179842: Wed Sep 9 02:17:18 2026 read: IOPS=0, BW=791KiB/s (810kB/s)(6144KiB/7766msec) clat (usec): min=470, max=261089, avg=148568.78, stdev=117299.59 lat (usec): min=471, max=261090, avg=148569.76, stdev=117299.49 clat percentiles (usec): | 1.00th=[ 469], 5.00th=[ 469], 10.00th=[ 469], 20.00th=[ 2114], | 30.00th=[ 2114], 40.00th=[177210], 50.00th=[177210], 60.00th=[217056], | 70.00th=[233833], 80.00th=[233833], 90.00th=[261096], 95.00th=[261096], | 99.00th=[261096], 99.50th=[261096], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 1954, max= 3984, per=100.00%, avg=2500.00, stdev=990.02, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=791KiB/s (810kB/s)(6144KiB/7766msec); 0 zone resets clat (msec): min=152, max=3341, avg=1138.76, stdev=1415.75 lat (msec): min=153, max=3341, avg=1138.90, stdev=1415.69 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 309], | 70.00th=[ 2534], 80.00th=[ 2534], 90.00th=[ 3339], 95.00th=[ 3339], | 99.00th=[ 3339], 99.50th=[ 3339], 99.90th=[ 3339], 99.95th=[ 3339], | 99.99th=[ 3339] bw ( KiB/s): min= 1992, max= 3820, per=74.67%, avg=2468.50, stdev=901.21, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=8.33% lat (msec) : 4=8.33%, 250=41.67%, 500=25.00%, >=2000=16.67% cpu : usr=0.01%, sys=7.20%, ctx=239, 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=179843: Wed Sep 9 02:17:18 2026 read: IOPS=0, BW=618KiB/s (633kB/s)(5120KiB/8289msec) clat (usec): min=526, max=232501, avg=118884.39, stdev=109922.25 lat (usec): min=527, max=232502, avg=118885.44, stdev=109922.48 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 2737], 40.00th=[ 2737], 50.00th=[162530], 60.00th=[162530], | 70.00th=[196084], 80.00th=[196084], 90.00th=[231736], 95.00th=[231736], | 99.00th=[231736], 99.50th=[231736], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 7816, max= 7816, per=100.00%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=0, BW=865KiB/s (886kB/s)(7168KiB/8289msec); 0 zone resets clat (msec): min=199, max=3593, avg=1073.98, stdev=1366.51 lat (msec): min=199, max=3593, avg=1074.06, stdev=1366.51 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 203], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 313], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 2400], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 2023, max= 4079, per=91.57%, avg=3027.25, stdev=1160.26, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=50.00%, 500=8.33%, 750=8.33%, >=2000=16.67% cpu : usr=0.00%, sys=7.12%, ctx=121, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2362KiB/s (2418kB/s), 236KiB/s-893KiB/s (242kB/s-915kB/s), io=20.0MiB (20.0MB), run=7766-8672msec WRITE: bw=3306KiB/s (3386kB/s), 638KiB/s-1181KiB/s (653kB/s-1209kB/s), io=28.0MiB (29.4MB), run=7766-8672msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179844: Wed Sep 9 02:17:18 2026 read: IOPS=0, BW=788KiB/s (807kB/s)(7168KiB/9095msec) clat (msec): min=69, max=2909, avg=1088.78, stdev=1216.02 lat (msec): min=69, max=2909, avg=1088.78, stdev=1216.03 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 89], | 30.00th=[ 106], 40.00th=[ 106], 50.00th=[ 768], 60.00th=[ 1028], | 70.00th=[ 1028], 80.00th=[ 2668], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 2015, max= 4039, per=100.00%, avg=2532.25, stdev=1004.59, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=563KiB/s (576kB/s)(5120KiB/9095msec); 0 zone resets clat (msec): min=116, max=383, avg=223.04, stdev=112.99 lat (msec): min=116, max=383, avg=223.11, stdev=112.99 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 116], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 171], 60.00th=[ 171], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 2015, max= 2039, per=64.22%, avg=2024.33, stdev=12.86, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (msec) : 100=16.67%, 250=33.33%, 500=16.67%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=16.67% cpu : usr=0.00%, sys=2.73%, ctx=118, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179845: Wed Sep 9 02:17:18 2026 read: IOPS=0, BW=229KiB/s (234kB/s)(2048KiB/8958msec) clat (msec): min=89, max=3307, avg=1698.13, stdev=2275.33 lat (msec): min=89, max=3307, avg=1698.14, stdev=2275.33 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 90], | 30.00th=[ 90], 40.00th=[ 90], 50.00th=[ 90], 60.00th=[ 3306], | 70.00th=[ 3306], 80.00th=[ 3306], 90.00th=[ 3306], 95.00th=[ 3306], | 99.00th=[ 3306], 99.50th=[ 3306], 99.90th=[ 3306], 99.95th=[ 3306], | 99.99th=[ 3306] bw ( KiB/s): min= 2000, max= 2048, per=89.92%, avg=2024.00, stdev=33.94, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1143KiB/s (1171kB/s)(10.0MiB/8958msec); 0 zone resets clat (msec): min=123, max=2581, avg=519.98, stdev=732.40 lat (msec): min=123, max=2581, avg=520.06, stdev=732.39 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 182], | 30.00th=[ 190], 40.00th=[ 249], 50.00th=[ 309], 60.00th=[ 317], | 70.00th=[ 380], 80.00th=[ 384], 90.00th=[ 485], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 2027, max= 4079, per=96.46%, avg=3040.50, stdev=1106.20, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, >=2000=16.67% cpu : usr=0.00%, sys=3.26%, ctx=102, 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=179846: Wed Sep 9 02:17:18 2026 read: IOPS=0, BW=708KiB/s (725kB/s)(6144KiB/8675msec) clat (msec): min=71, max=429, avg=175.34, stdev=131.14 lat (msec): min=71, max=429, avg=175.34, stdev=131.14 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 115], | 30.00th=[ 115], 40.00th=[ 117], 50.00th=[ 117], 60.00th=[ 120], | 70.00th=[ 201], 80.00th=[ 201], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 2000, max= 6083, per=100.00%, avg=4041.50, stdev=2887.12, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=0, BW=708KiB/s (725kB/s)(6144KiB/8675msec); 0 zone resets clat (msec): min=134, max=3549, avg=1250.30, stdev=1463.14 lat (msec): min=134, max=3549, avg=1250.39, stdev=1463.15 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 584], | 70.00th=[ 2635], 80.00th=[ 2635], 90.00th=[ 3540], 95.00th=[ 3540], | 99.00th=[ 3540], 99.50th=[ 3540], 99.90th=[ 3540], 99.95th=[ 3540], | 99.99th=[ 3540] bw ( KiB/s): min= 2019, max= 4055, per=80.50%, avg=2537.25, stdev=1011.91, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, >=2000=16.67% cpu : usr=0.00%, sys=2.18%, ctx=92, 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=179847: Wed Sep 9 02:17:18 2026 read: IOPS=0, BW=574KiB/s (588kB/s)(5120KiB/8918msec) clat (msec): min=78, max=377, avg=171.47, stdev=119.10 lat (msec): min=78, max=377, avg=171.47, stdev=119.10 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 79], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 125], 60.00th=[ 125], | 70.00th=[ 165], 80.00th=[ 165], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 4000, max= 4079, per=100.00%, avg=4039.50, stdev=55.86, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=804KiB/s (823kB/s)(7168KiB/8918msec); 0 zone resets clat (msec): min=107, max=3464, avg=1116.80, stdev=1349.13 lat (msec): min=107, max=3464, avg=1117.18, stdev=1349.52 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 205], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 380], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 2601], 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= 2027, max= 4079, per=96.84%, avg=3052.25, stdev=1171.80, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 1000=8.33%, >=2000=16.67% cpu : usr=0.00%, sys=3.44%, ctx=113, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=2252KiB/s (2306kB/s), 229KiB/s-788KiB/s (234kB/s-807kB/s), io=20.0MiB (20.0MB), run=8675-9095msec WRITE: bw=3153KiB/s (3228kB/s), 563KiB/s-1143KiB/s (576kB/s-1171kB/s), io=28.0MiB (29.4MB), run=8675-9095msec 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=179854: Wed Sep 9 02:17:31 2026 read: IOPS=1, BW=5538KiB/s (5671kB/s)(12.0MiB/2219msec) clat (msec): min=675, max=710, avg=688.77, stdev=18.68 lat (msec): min=675, max=710, avg=688.77, stdev=18.68 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] 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) : 750=100.00% cpu : usr=0.00%, sys=17.18%, ctx=437, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179855: Wed Sep 9 02:17:31 2026 read: IOPS=0, BW=1586KiB/s (1624kB/s)(4096KiB/2583msec) clat (nsec): min=726787k, max=726787k, avg=726787210.00, stdev= 0.00 lat (nsec): min=726789k, max=726789k, avg=726789407.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3172KiB/s (3248kB/s)(8192KiB/2583msec); 0 zone resets clat (msec): min=658, max=1074, avg=866.42, stdev=294.16 lat (msec): min=658, max=1074, avg=866.77, stdev=294.24 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8159, max= 8159, per=64.31%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.76%, ctx=155, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179856: Wed Sep 9 02:17:31 2026 write: IOPS=1, BW=4815KiB/s (4931kB/s)(12.0MiB/2552msec); 0 zone resets clat (msec): min=184, max=1163, avg=819.35, stdev=550.01 lat (msec): min=185, max=1163, avg=819.71, stdev=549.91 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7953, max= 8159, per=63.50%, avg=8056.00, stdev=145.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.27%, ctx=45, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179858: Wed Sep 9 02:17:31 2026 write: IOPS=1, BW=5785KiB/s (5924kB/s)(12.0MiB/2124msec); 0 zone resets clat (msec): min=288, max=1307, avg=697.27, stdev=538.76 lat (msec): min=290, max=1308, avg=697.88, stdev=538.37 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 5728, max= 8143, per=54.67%, avg=6935.50, stdev=1707.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.69%, ctx=69, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6343KiB/s (6495kB/s), 1586KiB/s-5538KiB/s (1624kB/s-5671kB/s), io=16.0MiB (16.8MB), run=2219-2583msec WRITE: bw=12.4MiB/s (12.0MB/s), 3172KiB/s-5785KiB/s (3248kB/s-5924kB/s), io=32.0MiB (33.6MB), run=2124-2583msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179857: Wed Sep 9 02:17:31 2026 read: IOPS=1, BW=5200KiB/s (5325kB/s)(12.0MiB/2363msec) clat (msec): min=672, max=846, avg=746.23, stdev=89.68 lat (msec): min=672, max=846, avg=746.23, stdev=89.68 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=5.17%, ctx=56, 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=179859: Wed Sep 9 02:17:31 2026 read: IOPS=0, BW=1820KiB/s (1864kB/s)(4096KiB/2250msec) clat (nsec): min=237794k, max=237794k, avg=237793919.00, stdev= 0.00 lat (nsec): min=237796k, max=237796k, avg=237796419.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 239], | 70.00th=[ 239], 80.00th=[ 239], 90.00th=[ 239], 95.00th=[ 239], | 99.00th=[ 239], 99.50th=[ 239], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 6532, max= 6532, per=94.22%, avg=6532.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3641KiB/s (3728kB/s)(8192KiB/2250msec); 0 zone resets clat (msec): min=975, max=998, avg=987.05, stdev=16.44 lat (msec): min=975, max=999, avg=987.37, stdev=16.47 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 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= 8192, max= 8192, per=70.43%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.00%, sys=7.16%, ctx=60, 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=179860: Wed Sep 9 02:17:31 2026 write: IOPS=1, BW=4362KiB/s (4467kB/s)(12.0MiB/2817msec); 0 zone resets clat (msec): min=119, max=1563, avg=916.89, stdev=733.96 lat (msec): min=120, max=1564, avg=917.62, stdev=733.36 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 120], | 30.00th=[ 120], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 1070], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8159, max= 8159, per=70.14%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.62%, ctx=60, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179861: Wed Sep 9 02:17:31 2026 write: IOPS=1, BW=5178KiB/s (5303kB/s)(12.0MiB/2373msec); 0 zone resets clat (msec): min=471, max=1241, avg=750.63, stdev=426.16 lat (msec): min=472, max=1241, avg=750.85, stdev=426.11 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 472], 10.00th=[ 472], 20.00th=[ 472], | 30.00th=[ 472], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8175, max= 8192, per=70.35%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.51%, ctx=38, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6934KiB/s (7100kB/s), 1820KiB/s-5200KiB/s (1864kB/s-5325kB/s), io=16.0MiB (16.8MB), run=2250-2363msec WRITE: bw=11.4MiB/s (11.9MB/s), 3641KiB/s-5178KiB/s (3728kB/s-5303kB/s), io=32.0MiB (33.6MB), run=2250-2817msec