== sanity test 398b: DIO and buffer IO race ============== 22:26:39 (1789179999) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.97538 s, 8.4 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=146559: Fri Sep 11 22:28:52 2026 read: IOPS=13, BW=53.3KiB/s (54.6kB/s)(5992KiB/112454msec) clat (usec): min=32, max=801036, avg=34674.83, stdev=31613.51 lat (usec): min=32, max=801038, avg=34676.72, stdev=31613.22 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 55], 10.00th=[ 82], 20.00th=[ 16057], | 30.00th=[ 20579], 40.00th=[ 24511], 50.00th=[ 28967], 60.00th=[ 34866], | 70.00th=[ 43779], 80.00th=[ 52167], 90.00th=[ 66323], 95.00th=[ 78119], | 99.00th=[109577], 99.50th=[119014], 99.90th=[263193], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 120, per=24.98%, avg=53.21, stdev=22.18, samples=219 iops : min= 1, max= 30, avg=12.66, stdev= 5.60, samples=219 write: IOPS=13, BW=55.0KiB/s (57.3kB/s)(6296KiB/112454msec); 0 zone resets clat (usec): min=934, max=535639, avg=38188.91, stdev=39580.05 lat (usec): min=935, max=535641, avg=38190.53, stdev=39579.99 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1582], 20.00th=[ 3458], | 30.00th=[ 7242], 40.00th=[ 17957], 50.00th=[ 29754], 60.00th=[ 39060], | 70.00th=[ 51643], 80.00th=[ 66847], 90.00th=[ 89654], 95.00th=[109577], | 99.00th=[156238], 99.50th=[166724], 99.90th=[270533], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 7, max= 135, per=24.92%, avg=55.56, stdev=20.85, samples=221 iops : min= 1, max= 33, avg=13.24, stdev= 5.23, samples=221 lat (usec) : 50=1.01%, 100=4.00%, 250=0.23%, 500=0.20%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=6.64%, 4=4.62%, 10=5.99%, 20=12.11%, 50=37.70% lat (msec) : 100=23.01%, 250=4.17%, 500=0.10%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=5.47%, ctx=6641, 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=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=146560: Fri Sep 11 22:28:52 2026 read: IOPS=13, BW=53.0KiB/s (54.3kB/s)(5940KiB/111996msec) clat (usec): min=27, max=266871, avg=36405.43, stdev=26969.41 lat (usec): min=28, max=266872, avg=36409.42, stdev=26968.07 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 57], 10.00th=[ 98], 20.00th=[ 17171], | 30.00th=[ 21890], 40.00th=[ 26870], 50.00th=[ 31589], 60.00th=[ 35914], | 70.00th=[ 43779], 80.00th=[ 55313], 90.00th=[ 70779], 95.00th=[ 83362], | 99.00th=[123208], 99.50th=[152044], 99.90th=[181404], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 7, max= 125, per=24.79%, avg=52.80, stdev=20.31, samples=220 iops : min= 1, max= 31, avg=12.56, stdev= 5.13, samples=220 write: IOPS=14, BW=56.7KiB/s (58.0kB/s)(6348KiB/111996msec); 0 zone resets clat (usec): min=834, max=881100, avg=36249.45, stdev=43976.31 lat (usec): min=835, max=881102, avg=36251.03, stdev=43976.33 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1450], 20.00th=[ 3556], | 30.00th=[ 7570], 40.00th=[ 16581], 50.00th=[ 27395], 60.00th=[ 35914], | 70.00th=[ 46924], 80.00th=[ 59507], 90.00th=[ 82314], 95.00th=[105382], | 99.00th=[162530], 99.50th=[185598], 99.90th=[566232], 99.95th=[884999], | 99.99th=[884999] bw ( KiB/s): min= 7, max= 119, per=25.35%, avg=56.53, stdev=22.61, samples=219 iops : min= 1, max= 29, avg=13.50, stdev= 5.67, samples=219 lat (usec) : 50=0.85%, 100=4.07%, 250=0.33%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=7.00%, 4=4.07%, 10=6.38%, 20=11.85%, 50=38.83% lat (msec) : 100=22.07%, 250=4.10%, 500=0.07%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.54%, ctx=6645, 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=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=146561: Fri Sep 11 22:28:52 2026 read: IOPS=13, BW=53.5KiB/s (54.8kB/s)(6028KiB/112606msec) clat (usec): min=27, max=949743, avg=34962.29, stdev=35039.37 lat (usec): min=27, max=949745, avg=34968.09, stdev=35038.84 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 55], 10.00th=[ 72], 20.00th=[ 16188], | 30.00th=[ 20579], 40.00th=[ 25035], 50.00th=[ 30016], 60.00th=[ 35914], | 70.00th=[ 42730], 80.00th=[ 51643], 90.00th=[ 66847], 95.00th=[ 80217], | 99.00th=[109577], 99.50th=[139461], 99.90th=[258999], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 7, max= 135, per=24.87%, avg=52.98, stdev=22.73, samples=221 iops : min= 1, max= 33, avg=12.60, stdev= 5.71, samples=221 write: IOPS=13, BW=55.6KiB/s (56.9kB/s)(6260KiB/112606msec); 0 zone resets clat (usec): min=975, max=582883, avg=38045.72, stdev=39848.67 lat (usec): min=976, max=582884, avg=38049.15, stdev=39848.75 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1614], 20.00th=[ 3752], | 30.00th=[ 8225], 40.00th=[ 18482], 50.00th=[ 27657], 60.00th=[ 39060], | 70.00th=[ 52167], 80.00th=[ 65799], 90.00th=[ 88605], 95.00th=[108528], | 99.00th=[164627], 99.50th=[187696], 99.90th=[250610], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 7, max= 159, per=24.76%, avg=55.20, stdev=21.02, samples=220 iops : min= 1, max= 39, avg=13.15, stdev= 5.30, samples=220 lat (usec) : 50=1.11%, 100=4.56%, 250=0.46%, 500=0.10%, 1000=0.03% lat (msec) : 2=6.02%, 4=4.33%, 10=6.67%, 20=11.98%, 50=37.86% lat (msec) : 100=22.46%, 250=4.30%, 500=0.07%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=5.48%, ctx=6636, 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=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=146562: Fri Sep 11 22:28:52 2026 read: IOPS=13, BW=54.2KiB/s (55.5kB/s)(6052KiB/111567msec) clat (usec): min=35, max=287526, avg=35228.32, stdev=27433.93 lat (usec): min=36, max=287527, avg=35230.40, stdev=27434.82 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 56], 10.00th=[ 89], 20.00th=[ 15401], | 30.00th=[ 20579], 40.00th=[ 25035], 50.00th=[ 29492], 60.00th=[ 35914], | 70.00th=[ 43779], 80.00th=[ 54264], 90.00th=[ 68682], 95.00th=[ 83362], | 99.00th=[119014], 99.50th=[145753], 99.90th=[225444], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 7, max= 127, per=25.36%, avg=54.01, stdev=22.27, samples=219 iops : min= 1, max= 31, avg=12.85, stdev= 5.61, samples=219 write: IOPS=13, BW=55.9KiB/s (57.2kB/s)(6236KiB/111567msec); 0 zone resets clat (usec): min=967, max=789620, avg=37131.31, stdev=42300.27 lat (usec): min=968, max=789622, avg=37134.12, stdev=42299.41 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1156], 10.00th=[ 1385], 20.00th=[ 3326], | 30.00th=[ 6652], 40.00th=[ 16581], 50.00th=[ 27132], 60.00th=[ 36963], | 70.00th=[ 49546], 80.00th=[ 63701], 90.00th=[ 88605], 95.00th=[108528], | 99.00th=[168821], 99.50th=[208667], 99.90th=[240124], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 7, max= 112, per=24.87%, avg=55.47, stdev=22.78, samples=219 iops : min= 1, max= 28, avg=13.22, stdev= 5.74, samples=219 lat (usec) : 50=0.81%, 100=4.43%, 250=0.49%, 500=0.20%, 750=0.07% lat (usec) : 1000=0.16% lat (msec) : 2=7.16%, 4=4.43%, 10=6.54%, 20=11.56%, 50=37.57% lat (msec) : 100=21.97%, 250=4.56%, 500=0.03%, 1000=0.03% cpu : usr=0.07%, sys=5.46%, ctx=6510, majf=0, minf=19 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=213KiB/s (218kB/s), 53.0KiB/s-54.2KiB/s (54.3kB/s-55.5kB/s), io=23.4MiB (24.6MB), run=111567-112606msec WRITE: bw=223KiB/s (229kB/s), 55.6KiB/s-56.7KiB/s (56.9kB/s-58.0kB/s), io=24.6MiB (25.7MB), run=111567-112606msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146564: Fri Sep 11 22:31:02 2026 read: IOPS=6, BW=24.7KiB/s (25.3kB/s)(5992KiB/242212msec) clat (msec): min=5, max=837, avg=31.11, stdev=38.78 lat (msec): min=5, max=837, avg=31.11, stdev=38.78 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 41], 90.00th=[ 69], 95.00th=[ 88], | 99.00th=[ 155], 99.50th=[ 178], 99.90th=[ 642], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7, max= 88, per=27.44%, avg=26.89, stdev=17.57, samples=432 iops : min= 1, max= 22, avg= 6.09, stdev= 4.45, samples=432 write: IOPS=6, BW=25.0KiB/s (26.6kB/s)(6296KiB/242212msec); 0 zone resets clat (msec): min=34, max=472, avg=124.19, stdev=53.59 lat (msec): min=34, max=472, avg=124.20, stdev=53.59 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 62], 10.00th=[ 69], 20.00th=[ 81], | 30.00th=[ 90], 40.00th=[ 102], 50.00th=[ 113], 60.00th=[ 125], | 70.00th=[ 144], 80.00th=[ 163], 90.00th=[ 194], 95.00th=[ 222], | 99.00th=[ 296], 99.50th=[ 347], 99.90th=[ 439], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 7, max= 56, per=24.86%, avg=25.60, stdev=10.35, samples=475 iops : min= 1, max= 14, avg= 5.77, stdev= 2.65, samples=475 lat (msec) : 10=5.08%, 20=18.75%, 50=18.00%, 100=25.23%, 250=31.45% lat (msec) : 500=1.43%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.11%, ctx=5027, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146565: Fri Sep 11 22:31:02 2026 read: IOPS=6, BW=24.5KiB/s (25.1kB/s)(5940KiB/242617msec) clat (msec): min=4, max=936, avg=31.07, stdev=37.26 lat (msec): min=4, max=936, avg=31.07, stdev=37.26 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 41], 90.00th=[ 68], 95.00th=[ 90], | 99.00th=[ 144], 99.50th=[ 163], 99.90th=[ 305], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 87, per=27.98%, avg=27.42, stdev=17.29, samples=419 iops : min= 1, max= 21, avg= 6.23, stdev= 4.34, samples=419 write: IOPS=6, BW=26.2KiB/s (26.8kB/s)(6348KiB/242617msec); 0 zone resets clat (msec): min=35, max=496, avg=123.74, stdev=52.65 lat (msec): min=35, max=496, avg=123.74, stdev=52.65 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 61], 10.00th=[ 69], 20.00th=[ 81], | 30.00th=[ 91], 40.00th=[ 103], 50.00th=[ 113], 60.00th=[ 126], | 70.00th=[ 142], 80.00th=[ 159], 90.00th=[ 194], 95.00th=[ 224], | 99.00th=[ 288], 99.50th=[ 326], 99.90th=[ 485], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 7, max= 56, per=24.96%, avg=25.71, stdev=10.28, samples=477 iops : min= 1, max= 14, avg= 5.79, stdev= 2.63, samples=477 lat (msec) : 10=4.72%, 20=18.85%, 50=17.90%, 100=24.71%, 250=32.23% lat (msec) : 500=1.56%, 1000=0.03% cpu : usr=0.04%, sys=1.11%, ctx=5051, 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=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=146566: Fri Sep 11 22:31:03 2026 read: IOPS=6, BW=24.9KiB/s (25.5kB/s)(6028KiB/241775msec) clat (msec): min=5, max=640, avg=32.14, stdev=35.53 lat (msec): min=5, max=640, avg=32.14, stdev=35.53 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 44], 90.00th=[ 68], 95.00th=[ 93], | 99.00th=[ 157], 99.50th=[ 230], 99.90th=[ 359], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 7, max= 95, per=27.05%, avg=26.51, stdev=17.12, samples=440 iops : min= 1, max= 23, avg= 6.00, stdev= 4.31, samples=440 write: IOPS=6, BW=25.9KiB/s (26.5kB/s)(6260KiB/241775msec); 0 zone resets clat (msec): min=31, max=1065, avg=123.46, stdev=56.53 lat (msec): min=31, max=1065, avg=123.47, stdev=56.53 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 68], 20.00th=[ 81], | 30.00th=[ 91], 40.00th=[ 102], 50.00th=[ 113], 60.00th=[ 125], | 70.00th=[ 142], 80.00th=[ 163], 90.00th=[ 192], 95.00th=[ 220], | 99.00th=[ 284], 99.50th=[ 342], 99.90th=[ 363], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 48, per=24.73%, avg=25.47, stdev=10.64, samples=474 iops : min= 1, max= 12, avg= 5.73, stdev= 2.73, samples=474 lat (msec) : 10=4.30%, 20=18.82%, 50=18.39%, 100=25.55%, 250=31.51% lat (msec) : 500=1.37%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.13%, ctx=4785, 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=146567: Fri Sep 11 22:31:03 2026 read: IOPS=6, BW=25.1KiB/s (25.7kB/s)(6052KiB/241355msec) clat (msec): min=5, max=536, avg=31.48, stdev=32.06 lat (msec): min=5, max=536, avg=31.48, stdev=32.05 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 43], 90.00th=[ 69], 95.00th=[ 93], | 99.00th=[ 142], 99.50th=[ 167], 99.90th=[ 300], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7, max= 101, per=27.47%, avg=26.92, stdev=18.36, samples=435 iops : min= 1, max= 25, avg= 6.11, stdev= 4.63, samples=435 write: IOPS=6, BW=25.8KiB/s (26.5kB/s)(6236KiB/241355msec); 0 zone resets clat (msec): min=33, max=978, avg=124.18, stdev=57.76 lat (msec): min=33, max=978, avg=124.19, stdev=57.77 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 69], 20.00th=[ 81], | 30.00th=[ 91], 40.00th=[ 103], 50.00th=[ 112], 60.00th=[ 125], | 70.00th=[ 140], 80.00th=[ 161], 90.00th=[ 194], 95.00th=[ 226], | 99.00th=[ 300], 99.50th=[ 351], 99.90th=[ 506], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 56, per=24.63%, avg=25.37, stdev=10.33, samples=474 iops : min= 1, max= 14, avg= 5.71, stdev= 2.65, samples=474 lat (msec) : 10=4.75%, 20=19.01%, 50=17.94%, 100=25.10%, 250=31.64% lat (msec) : 500=1.46%, 750=0.07%, 1000=0.03% cpu : usr=0.05%, sys=1.09%, ctx=5108, 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=98.0KiB/s (101kB/s), 24.5KiB/s-25.1KiB/s (25.1kB/s-25.7kB/s), io=23.4MiB (24.6MB), run=241355-242617msec WRITE: bw=104KiB/s (106kB/s), 25.8KiB/s-26.2KiB/s (26.5kB/s-26.8kB/s), io=24.6MiB (25.7MB), run=241355-242617msec 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=146618: Fri Sep 11 22:31:38 2026 read: IOPS=15, BW=241KiB/s (246kB/s)(5920KiB/24601msec) clat (usec): min=37, max=152574, avg=32810.31, stdev=29226.11 lat (usec): min=37, max=152575, avg=32814.03, stdev=29225.67 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 53], 10.00th=[ 58], 20.00th=[ 89], | 30.00th=[ 17171], 40.00th=[ 24511], 50.00th=[ 29230], 60.00th=[ 35390], | 70.00th=[ 44827], 80.00th=[ 54264], 90.00th=[ 67634], 95.00th=[ 84411], | 99.00th=[139461], 99.50th=[149947], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 31, max= 480, per=24.81%, avg=238.21, stdev=97.68, samples=48 iops : min= 1, max= 30, avg=14.10, stdev= 6.15, samples=48 write: IOPS=16, BW=259KiB/s (265kB/s)(6368KiB/24601msec); 0 zone resets clat (usec): min=1314, max=199036, avg=30689.06, stdev=32144.61 lat (usec): min=1316, max=199038, avg=30690.92, stdev=32144.61 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1680], 10.00th=[ 2114], 20.00th=[ 3818], | 30.00th=[ 6587], 40.00th=[ 10683], 50.00th=[ 20579], 60.00th=[ 28181], | 70.00th=[ 39060], 80.00th=[ 56361], 90.00th=[ 77071], 95.00th=[ 94897], | 99.00th=[135267], 99.50th=[141558], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 62, max= 510, per=25.52%, avg=257.71, stdev=107.81, samples=48 iops : min= 3, max= 31, avg=15.33, stdev= 6.77, samples=48 lat (usec) : 50=1.43%, 100=8.98%, 250=1.56%, 500=0.26%, 750=0.39% lat (msec) : 2=4.82%, 4=6.25%, 10=8.98%, 20=9.38%, 50=34.38% lat (msec) : 100=20.18%, 250=3.39% cpu : usr=0.08%, sys=5.97%, ctx=1476, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146619: Fri Sep 11 22:31:38 2026 read: IOPS=14, BW=230KiB/s (236kB/s)(5744KiB/24948msec) clat (usec): min=38, max=152605, avg=32878.29, stdev=27103.57 lat (usec): min=38, max=152606, avg=32880.13, stdev=27103.57 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 53], 10.00th=[ 61], 20.00th=[ 93], | 30.00th=[ 18220], 40.00th=[ 25560], 50.00th=[ 30540], 60.00th=[ 36963], | 70.00th=[ 44303], 80.00th=[ 53216], 90.00th=[ 67634], 95.00th=[ 82314], | 99.00th=[115868], 99.50th=[149947], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 31, max= 432, per=24.83%, avg=238.40, stdev=95.41, samples=47 iops : min= 1, max= 27, avg=14.13, stdev= 6.02, samples=47 write: IOPS=16, BW=262KiB/s (269kB/s)(6544KiB/24948msec); 0 zone resets clat (usec): min=1337, max=303665, avg=31401.54, stdev=40235.66 lat (usec): min=1338, max=303667, avg=31406.64, stdev=40248.48 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1663], 10.00th=[ 2343], 20.00th=[ 4228], | 30.00th=[ 6128], 40.00th=[ 9503], 50.00th=[ 16450], 60.00th=[ 26084], | 70.00th=[ 35390], 80.00th=[ 52167], 90.00th=[ 73925], 95.00th=[103285], | 99.00th=[204473], 99.50th=[210764], 99.90th=[304088], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 31, max= 573, per=25.79%, avg=260.47, stdev=127.86, samples=49 iops : min= 1, max= 35, avg=15.51, stdev= 8.02, samples=49 lat (usec) : 50=0.78%, 100=9.11%, 250=0.65%, 500=0.13%, 750=0.26% lat (msec) : 2=4.43%, 4=5.60%, 10=12.11%, 20=10.55%, 50=34.11% lat (msec) : 100=18.62%, 250=3.52%, 500=0.13% cpu : usr=0.05%, sys=5.82%, ctx=1472, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146621: Fri Sep 11 22:31:38 2026 read: IOPS=16, BW=259KiB/s (266kB/s)(6256KiB/24117msec) clat (usec): min=34, max=247576, avg=32911.34, stdev=30063.45 lat (usec): min=34, max=247576, avg=32914.48, stdev=30065.56 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 52], 10.00th=[ 58], 20.00th=[ 73], | 30.00th=[ 18482], 40.00th=[ 25297], 50.00th=[ 30278], 60.00th=[ 36439], | 70.00th=[ 43254], 80.00th=[ 49546], 90.00th=[ 65799], 95.00th=[ 76022], | 99.00th=[164627], 99.50th=[198181], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 95, max= 525, per=27.87%, avg=267.52, stdev=95.04, samples=46 iops : min= 5, max= 32, avg=15.96, stdev= 6.03, samples=46 write: IOPS=15, BW=250KiB/s (256kB/s)(6032KiB/24117msec); 0 zone resets clat (usec): min=1260, max=352835, avg=29052.05, stdev=36017.97 lat (usec): min=1262, max=352838, avg=29054.78, stdev=36017.96 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1647], 10.00th=[ 2147], 20.00th=[ 3294], | 30.00th=[ 5014], 40.00th=[ 7898], 50.00th=[ 14615], 60.00th=[ 23200], | 70.00th=[ 35390], 80.00th=[ 52691], 90.00th=[ 72877], 95.00th=[ 99091], | 99.00th=[145753], 99.50th=[173016], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 30, max= 509, per=24.67%, avg=249.21, stdev=103.88, samples=47 iops : min= 1, max= 31, avg=14.79, stdev= 6.46, samples=47 lat (usec) : 50=1.82%, 100=9.77%, 250=0.65%, 750=0.13% lat (msec) : 2=4.82%, 4=7.68%, 10=9.24%, 20=9.24%, 50=36.20% lat (msec) : 100=17.58%, 250=2.73%, 500=0.13% cpu : usr=0.12%, sys=6.03%, ctx=1443, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146622: Fri Sep 11 22:31:38 2026 read: IOPS=15, BW=253KiB/s (260kB/s)(6032KiB/23798msec) clat (usec): min=37, max=338691, avg=33108.52, stdev=28262.38 lat (usec): min=38, max=338693, avg=33109.76, stdev=28262.38 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 57], 10.00th=[ 62], 20.00th=[ 269], | 30.00th=[ 21627], 40.00th=[ 26608], 50.00th=[ 32113], 60.00th=[ 37487], | 70.00th=[ 43254], 80.00th=[ 50594], 90.00th=[ 62129], 95.00th=[ 73925], | 99.00th=[106431], 99.50th=[109577], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 63, max= 415, per=26.37%, avg=253.19, stdev=76.96, samples=47 iops : min= 3, max= 25, avg=15.06, stdev= 4.85, samples=47 write: IOPS=16, BW=263KiB/s (269kB/s)(6256KiB/23798msec); 0 zone resets clat (usec): min=1324, max=181881, avg=28761.73, stdev=29631.22 lat (usec): min=1326, max=181883, avg=28768.66, stdev=29627.71 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1827], 10.00th=[ 2737], 20.00th=[ 4490], | 30.00th=[ 7504], 40.00th=[ 11207], 50.00th=[ 17695], 60.00th=[ 27132], | 70.00th=[ 39060], 80.00th=[ 51119], 90.00th=[ 68682], 95.00th=[ 90702], | 99.00th=[135267], 99.50th=[147850], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 30, max= 573, per=26.09%, avg=263.47, stdev=101.40, samples=47 iops : min= 1, max= 35, avg=15.70, stdev= 6.34, samples=47 lat (usec) : 50=1.04%, 100=7.68%, 250=1.04%, 500=0.39%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=3.52%, 4=4.95%, 10=10.03%, 20=11.59%, 50=38.80% lat (msec) : 100=18.36%, 250=2.21%, 500=0.13% cpu : usr=0.10%, sys=6.16%, ctx=1531, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=960KiB/s (983kB/s), 230KiB/s-259KiB/s (236kB/s-266kB/s), io=23.4MiB (24.5MB), run=23798-24948msec WRITE: bw=1010KiB/s (1034kB/s), 250KiB/s-263KiB/s (256kB/s-269kB/s), io=24.6MiB (25.8MB), run=23798-24948msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146615: Fri Sep 11 22:32:14 2026 read: IOPS=6, BW=97.2KiB/s (99.6kB/s)(5920KiB/60888msec) clat (msec): min=6, max=258, avg=35.01, stdev=33.83 lat (msec): min=6, max=258, avg=35.01, stdev=33.83 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 46], 90.00th=[ 71], 95.00th=[ 102], | 99.00th=[ 209], 99.50th=[ 241], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 30, max= 318, per=25.63%, avg=100.20, stdev=55.92, samples=115 iops : min= 1, max= 19, avg= 5.43, stdev= 3.53, samples=115 write: IOPS=6, BW=105KiB/s (107kB/s)(6368KiB/60888msec); 0 zone resets clat (msec): min=42, max=291, avg=120.26, stdev=45.57 lat (msec): min=42, max=291, avg=120.27, stdev=45.57 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 65], 10.00th=[ 69], 20.00th=[ 80], | 30.00th=[ 91], 40.00th=[ 100], 50.00th=[ 114], 60.00th=[ 123], | 70.00th=[ 140], 80.00th=[ 159], 90.00th=[ 188], 95.00th=[ 209], | 99.00th=[ 259], 99.50th=[ 271], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 191, per=25.24%, avg=103.74, stdev=39.53, samples=120 iops : min= 1, max= 11, avg= 5.65, stdev= 2.50, samples=120 lat (msec) : 10=1.17%, 20=17.84%, 50=20.83%, 100=27.08%, 250=32.29% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.25%, ctx=1257, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146616: Fri Sep 11 22:32:14 2026 read: IOPS=5, BW=93.8KiB/s (96.0kB/s)(5744KiB/61243msec) clat (msec): min=6, max=306, avg=32.86, stdev=34.25 lat (msec): min=6, max=306, avg=32.87, stdev=34.25 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 32], 80.00th=[ 40], 90.00th=[ 67], 95.00th=[ 103], | 99.00th=[ 174], 99.50th=[ 243], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 29, max= 351, per=26.84%, avg=104.93, stdev=67.67, samples=107 iops : min= 1, max= 21, avg= 5.74, stdev= 4.23, samples=107 write: IOPS=6, BW=107KiB/s (109kB/s)(6544KiB/61243msec); 0 zone resets clat (msec): min=43, max=394, avg=120.28, stdev=51.36 lat (msec): min=43, max=394, avg=120.28, stdev=51.36 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 83], | 30.00th=[ 92], 40.00th=[ 101], 50.00th=[ 108], 60.00th=[ 117], | 70.00th=[ 132], 80.00th=[ 153], 90.00th=[ 188], 95.00th=[ 224], | 99.00th=[ 305], 99.50th=[ 317], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 30, max= 191, per=26.03%, avg=106.98, stdev=40.63, samples=120 iops : min= 1, max= 11, avg= 5.86, stdev= 2.60, samples=120 lat (msec) : 10=2.73%, 20=17.84%, 50=20.31%, 100=24.87%, 250=32.42% lat (msec) : 500=1.82% cpu : usr=0.04%, sys=1.33%, ctx=1347, 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=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=146617: Fri Sep 11 22:32:14 2026 read: IOPS=6, BW=105KiB/s (108kB/s)(6256KiB/59582msec) clat (msec): min=6, max=256, avg=32.19, stdev=30.07 lat (msec): min=6, max=256, avg=32.19, stdev=30.07 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 31], 80.00th=[ 39], 90.00th=[ 66], 95.00th=[ 89], | 99.00th=[ 180], 99.50th=[ 201], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 31, max= 443, per=29.26%, avg=114.43, stdev=80.19, samples=108 iops : min= 1, max= 27, avg= 6.33, stdev= 5.06, samples=108 write: IOPS=6, BW=101KiB/s (104kB/s)(6032KiB/59582msec); 0 zone resets clat (msec): min=48, max=396, avg=123.98, stdev=53.71 lat (msec): min=48, max=396, avg=123.99, stdev=53.71 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 66], 10.00th=[ 73], 20.00th=[ 84], | 30.00th=[ 93], 40.00th=[ 103], 50.00th=[ 112], 60.00th=[ 121], | 70.00th=[ 134], 80.00th=[ 157], 90.00th=[ 197], 95.00th=[ 230], | 99.00th=[ 330], 99.50th=[ 368], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 30, max= 192, per=24.50%, avg=100.71, stdev=38.54, samples=118 iops : min= 1, max= 12, avg= 5.46, stdev= 2.46, samples=118 lat (msec) : 10=2.21%, 20=17.97%, 50=23.18%, 100=25.00%, 250=30.21% lat (msec) : 500=1.43% cpu : usr=0.04%, sys=1.37%, ctx=1259, 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=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=146620: Fri Sep 11 22:32:14 2026 read: IOPS=6, BW=101KiB/s (103kB/s)(6032KiB/59836msec) clat (msec): min=7, max=321, avg=34.24, stdev=34.43 lat (msec): min=7, max=321, avg=34.24, stdev=34.43 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 46], 90.00th=[ 70], 95.00th=[ 94], | 99.00th=[ 176], 99.50th=[ 186], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 30, max= 381, per=27.27%, avg=106.61, stdev=73.89, samples=110 iops : min= 1, max= 23, avg= 5.84, stdev= 4.65, samples=110 write: IOPS=6, BW=105KiB/s (107kB/s)(6256KiB/59836msec); 0 zone resets clat (msec): min=40, max=366, avg=119.50, stdev=49.05 lat (msec): min=40, max=366, avg=119.51, stdev=49.05 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 68], 20.00th=[ 82], | 30.00th=[ 91], 40.00th=[ 102], 50.00th=[ 110], 60.00th=[ 121], | 70.00th=[ 133], 80.00th=[ 150], 90.00th=[ 184], 95.00th=[ 220], | 99.00th=[ 292], 99.50th=[ 305], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 31, max= 191, per=25.28%, avg=103.91, stdev=40.08, samples=118 iops : min= 1, max= 11, avg= 5.66, stdev= 2.55, samples=118 lat (msec) : 10=2.73%, 20=17.84%, 50=20.70%, 100=25.26%, 250=32.03% lat (msec) : 500=1.43% cpu : usr=0.03%, sys=1.31%, ctx=1278, 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=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=391KiB/s (400kB/s), 93.8KiB/s-105KiB/s (96.0kB/s-108kB/s), io=23.4MiB (24.5MB), run=59582-61243msec WRITE: bw=411KiB/s (421kB/s), 101KiB/s-107KiB/s (104kB/s-109kB/s), io=24.6MiB (25.8MB), run=59582-61243msec 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=146637: Fri Sep 11 22:32:31 2026 read: IOPS=1, BW=1067KiB/s (1093kB/s)(7168KiB/6717msec) clat (usec): min=494, max=3230.9k, avg=592747.46, stdev=1166490.98 lat (usec): min=495, max=3230.9k, avg=592748.89, stdev=1166490.80 clat percentiles (usec): | 1.00th=[ 494], 5.00th=[ 494], 10.00th=[ 494], | 20.00th=[ 113771], 30.00th=[ 137364], 40.00th=[ 137364], | 50.00th=[ 187696], 60.00th=[ 200279], 70.00th=[ 200279], | 80.00th=[ 278922], 90.00th=[3238003], 95.00th=[3238003], | 99.00th=[3238003], 99.50th=[3238003], 99.90th=[3238003], | 99.95th=[3238003], 99.99th=[3238003] bw ( KiB/s): min= 2031, max= 3992, per=95.72%, avg=2917.67, stdev=993.88, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=0, BW=762KiB/s (781kB/s)(5120KiB/6717msec); 0 zone resets clat (msec): min=132, max=1872, avg=497.15, stdev=768.91 lat (msec): min=132, max=1872, avg=497.21, stdev=768.91 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 146], 60.00th=[ 146], | 70.00th=[ 192], 80.00th=[ 192], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 1996, max= 3992, per=70.15%, avg=2994.00, stdev=1411.39, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (usec) : 500=8.33% lat (msec) : 250=66.67%, 500=8.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.86%, ctx=399, 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=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=146638: Fri Sep 11 22:32:31 2026 read: IOPS=0, BW=461KiB/s (473kB/s)(2048KiB/4438msec) clat (usec): min=1313, max=208351, avg=104832.29, stdev=146397.68 lat (usec): min=1315, max=208353, avg=104834.34, stdev=146398.42 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1319], 10.00th=[ 1319], 20.00th=[ 1319], | 30.00th=[ 1319], 40.00th=[ 1319], 50.00th=[ 1319], 60.00th=[208667], | 70.00th=[208667], 80.00th=[208667], 90.00th=[208667], 95.00th=[208667], | 99.00th=[208667], 99.50th=[208667], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 1359, max= 2023, per=55.48%, avg=1691.00, stdev=469.52, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2307KiB/s (2363kB/s)(10.0MiB/4438msec); 0 zone resets clat (msec): min=112, max=1158, avg=419.73, stdev=339.27 lat (msec): min=112, max=1159, avg=419.80, stdev=339.27 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 157], | 30.00th=[ 199], 40.00th=[ 224], 50.00th=[ 236], 60.00th=[ 326], | 70.00th=[ 338], 80.00th=[ 693], 90.00th=[ 760], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 2035, max= 4096, per=85.89%, avg=3665.60, stdev=911.74, samples=5 iops : min= 1, max= 4, avg= 2.80, stdev= 1.10, samples=5 lat (msec) : 2=8.33%, 250=50.00%, 500=16.67%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=12.26%, ctx=123, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146639: Fri Sep 11 22:32:31 2026 read: IOPS=1, BW=1029KiB/s (1054kB/s)(6144KiB/5968msec) clat (usec): min=509, max=3250.2k, avg=670954.72, stdev=1270268.03 lat (usec): min=512, max=3250.2k, avg=670956.18, stdev=1270267.86 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], | 20.00th=[ 1020], 30.00th=[ 1020], 40.00th=[ 200279], | 50.00th=[ 200279], 60.00th=[ 267387], 70.00th=[ 304088], | 80.00th=[ 304088], 90.00th=[3238003], 95.00th=[3238003], | 99.00th=[3238003], 99.50th=[3238003], 99.90th=[3238003], | 99.95th=[3238003], 99.99th=[3238003] bw ( KiB/s): min= 1996, max= 4087, per=100.00%, avg=3390.00, stdev=1207.24, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1029KiB/s (1054kB/s)(6144KiB/5968msec); 0 zone resets clat (msec): min=128, max=897, avg=307.07, stdev=298.68 lat (msec): min=128, max=897, avg=307.15, stdev=298.69 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 174], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 2031, max= 3992, per=63.39%, avg=2705.50, stdev=922.22, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=41.67%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.55%, ctx=506, 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=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=146640: Fri Sep 11 22:32:31 2026 read: IOPS=1, BW=1149KiB/s (1177kB/s)(5120KiB/4456msec) clat (usec): min=1083, max=507729, avg=230015.88, stdev=181059.94 lat (usec): min=1084, max=507730, avg=230017.06, stdev=181060.04 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1090], 10.00th=[ 1090], 20.00th=[ 1090], | 30.00th=[200279], 40.00th=[200279], 50.00th=[204473], 60.00th=[204473], | 70.00th=[235930], 80.00th=[235930], 90.00th=[509608], 95.00th=[509608], | 99.00th=[509608], 99.50th=[509608], 99.90th=[509608], 99.95th=[509608], | 99.99th=[509608] bw ( KiB/s): min= 2031, max= 4047, per=88.81%, avg=2707.00, stdev=1160.49, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1609KiB/s (1647kB/s)(7168KiB/4456msec); 0 zone resets clat (msec): min=78, max=1654, avg=445.86, stdev=549.47 lat (msec): min=78, max=1654, avg=445.99, stdev=549.43 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 182], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 226], 60.00th=[ 255], | 70.00th=[ 255], 80.00th=[ 518], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 1359, max= 6107, per=79.57%, avg=3396.00, stdev=2147.84, samples=4 iops : min= 1, max= 5, avg= 2.50, stdev= 1.91, samples=4 lat (msec) : 2=8.33%, 100=8.33%, 250=50.00%, 500=8.33%, 750=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=13.24%, ctx=174, 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=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=3049KiB/s (3122kB/s), 461KiB/s-1149KiB/s (473kB/s-1177kB/s), io=20.0MiB (20.0MB), run=4438-6717msec WRITE: bw=4269KiB/s (4371kB/s), 762KiB/s-2307KiB/s (781kB/s-2363kB/s), io=28.0MiB (29.4MB), run=4438-6717msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146642: Fri Sep 11 22:32:31 2026 read: IOPS=0, BW=1023KiB/s (1048kB/s)(7168KiB/7004msec) clat (msec): min=74, max=2485, avg=581.84, stdev=867.57 lat (msec): min=74, max=2485, avg=581.84, stdev=867.57 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 100], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 203], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 726], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 1440, max= 4087, per=79.62%, avg=2328.00, stdev=1016.82, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=731KiB/s (749kB/s)(5120KiB/7004msec); 0 zone resets clat (msec): min=80, max=2179, avg=555.39, stdev=909.35 lat (msec): min=80, max=2180, avg=555.47, stdev=909.36 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 81], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 155], 60.00th=[ 155], | 70.00th=[ 211], 80.00th=[ 211], 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= 2043, max= 6131, per=99.85%, avg=4087.00, stdev=2890.65, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 100=25.00%, 250=41.67%, 500=8.33%, 750=8.33%, >=2000=16.67% cpu : usr=0.00%, sys=1.86%, ctx=59, 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=146643: Fri Sep 11 22:32:31 2026 read: IOPS=0, BW=305KiB/s (313kB/s)(2048KiB/6707msec) clat (msec): min=204, max=345, avg=275.07, stdev=99.36 lat (msec): min=204, max=345, avg=275.08, stdev=99.37 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 347], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 1452, max= 2035, per=59.63%, avg=1743.50, stdev=412.24, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1527KiB/s (1563kB/s)(10.0MiB/6707msec); 0 zone resets clat (msec): min=130, max=3017, avg=601.06, stdev=895.32 lat (msec): min=130, max=3017, avg=601.15, stdev=895.34 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 134], | 30.00th=[ 186], 40.00th=[ 215], 50.00th=[ 284], 60.00th=[ 288], | 70.00th=[ 305], 80.00th=[ 342], 90.00th=[ 1116], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 2023, max= 4096, per=59.77%, avg=2446.40, stdev=922.18, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 lat (msec) : 250=41.67%, 500=41.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=3.39%, ctx=77, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146644: Fri Sep 11 22:32:31 2026 read: IOPS=0, BW=986KiB/s (1010kB/s)(6144KiB/6232msec) clat (msec): min=122, max=2658, avg=576.98, stdev=1020.20 lat (msec): min=122, max=2658, avg=576.98, stdev=1020.20 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 150], 50.00th=[ 150], 60.00th=[ 184], | 70.00th=[ 215], 80.00th=[ 215], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 2023, max= 4096, per=92.95%, avg=2718.00, stdev=1193.40, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=0, BW=986KiB/s (1010kB/s)(6144KiB/6232msec); 0 zone resets clat (msec): min=220, max=1034, avg=433.71, stdev=304.88 lat (msec): min=220, max=1034, avg=433.79, stdev=304.86 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 321], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1452, max= 2048, per=46.96%, avg=1922.00, stdev=262.89, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 250=50.00%, 500=33.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.32%, ctx=81, 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=146645: Fri Sep 11 22:32:31 2026 read: IOPS=1, BW=1051KiB/s (1076kB/s)(5120KiB/4873msec) clat (msec): min=72, max=129, avg=100.61, stdev=20.82 lat (msec): min=72, max=129, avg=100.61, stdev=20.82 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 95], 40.00th=[ 95], 50.00th=[ 100], 60.00th=[ 100], | 70.00th=[ 108], 80.00th=[ 108], 90.00th=[ 130], 95.00th=[ 130], | 99.00th=[ 130], 99.50th=[ 130], 99.90th=[ 130], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 2048, max= 6131, per=100.00%, avg=4089.50, stdev=2887.12, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1471KiB/s (1506kB/s)(7168KiB/4873msec); 0 zone resets clat (msec): min=165, max=1469, avg=617.51, stdev=478.83 lat (msec): min=165, max=1469, avg=617.72, stdev=478.80 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 201], | 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 472], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 1036], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 1374, max= 4087, per=56.64%, avg=2318.40, stdev=1030.34, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 lat (msec) : 100=25.00%, 250=33.33%, 500=16.67%, 750=8.33%, 2000=16.67% cpu : usr=0.00%, sys=4.82%, ctx=93, 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=2924KiB/s (2994kB/s), 305KiB/s-1051KiB/s (313kB/s-1076kB/s), io=20.0MiB (20.0MB), run=4873-7004msec WRITE: bw=4094KiB/s (4192kB/s), 731KiB/s-1527KiB/s (749kB/s-1563kB/s), io=28.0MiB (29.4MB), run=4873-7004msec 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=146653: Fri Sep 11 22:32:46 2026 read: IOPS=0, BW=4051KiB/s (4149kB/s)(12.0MiB/3033msec) clat (msec): min=808, max=1099, avg=990.56, stdev=158.37 lat (msec): min=808, max=1099, avg=990.56, stdev=158.36 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8126, max= 8175, per=100.00%, avg=8150.50, stdev=34.65, 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=0.10%, sys=10.65%, ctx=272, 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=146654: Fri Sep 11 22:32:46 2026 read: IOPS=0, BW=1304KiB/s (1336kB/s)(4096KiB/3140msec) clat (nsec): min=770174k, max=770174k, avg=770174153.00, stdev= 0.00 lat (nsec): min=770177k, max=770177k, avg=770177014.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2609KiB/s (2672kB/s)(8192KiB/3140msec); 0 zone resets clat (msec): min=658, max=1617, avg=1137.73, stdev=678.06 lat (msec): min=659, max=1617, avg=1138.65, stdev=677.20 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=[ 1620], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7787, max= 7787, per=97.78%, avg=7787.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.06%, sys=5.10%, ctx=140, 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=146655: Fri Sep 11 22:32:46 2026 write: IOPS=0, BW=2987KiB/s (3059kB/s)(12.0MiB/4114msec); 0 zone resets clat (msec): min=357, max=1999, avg=1329.76, stdev=861.88 lat (msec): min=358, max=2000, avg=1330.32, stdev=861.79 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 1636], 50.00th=[ 1636], 60.00th=[ 1636], | 70.00th=[ 2005], 80.00th=[ 2005], 90.00th=[ 2005], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, 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=3.79%, ctx=59, 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=146656: Fri Sep 11 22:32:46 2026 write: IOPS=1, BW=4929KiB/s (5047kB/s)(12.0MiB/2493msec); 0 zone resets clat (msec): min=343, max=1411, avg=795.57, stdev=552.73 lat (msec): min=343, max=1411, avg=795.91, stdev=552.58 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], rand-rw: (groupid=0, jobs=1): err= 0: pid=146658: Fri Sep 11 22:32:46 2026 read: IOPS=1, BW=4428KiB/s (4534kB/s)(12.0MiB/2775msec) clat (msec): min=549, max=1254, avg=900.95, stdev=352.58 lat (msec): min=549, max=1254, avg=900.96, stdev=352.58 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7953, max= 8126, per=100.00%, avg=8039.50, stdev=122.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=2.99%, ctx=46, 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=146659: Fri Sep 11 22:32:46 2026 read: IOPS=0, BW=1132KiB/s (1159kB/s)(4096KiB/3618msec) clat (nsec): min=1256.7M, max=1256.7M, avg=1256729299.00, stdev= 0.00 lat (nsec): min=1256.7M, max=1256.7M, avg=1256731909.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1250], 5.00th=[ 1250], 10.00th=[ 1250], 20.00th=[ 1250], | 30.00th=[ 1250], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7641, max= 7641, per=100.00%, avg=7641.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2264KiB/s (2319kB/s)(8192KiB/3618msec); 0 zone resets clat (msec): min=633, max=1555, avg=1094.49, stdev=652.54 lat (msec): min=633, max=1556, avg=1094.86, stdev=652.52 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 1552], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 7816, max= 7816, per=86.31%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.46%, ctx=55, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=146660: Fri Sep 11 22:32:46 2026 write: IOPS=0, BW=3691KiB/s (3780kB/s)(12.0MiB/3329msec); 0 zone resets clat (msec): min=316, max=1760, avg=1039.76, stdev=722.32 lat (msec): min=316, max=1768, avg=1042.62, stdev=725.82 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 1045], 50.00th=[ 1045], 60.00th=[ 1045], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 8143, max= 8175, per=90.09%, avg=8159.00, stdev=22.63, 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=4.30%, ctx=35, 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=146661: Fri Sep 11 22:32:46 2026 write: IOPS=1, BW=4288KiB/s (4390kB/s)(12.0MiB/2866msec); 0 zone resets clat (msec): min=578, max=1065, avg=891.97, stdev=272.15 lat (msec): min=578, max=1066, avg=892.31, stdev=272.17 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 1028], 50.00th=[ 1028], 60.00th=[ 1028], | 70.00th=[ 1070], 80.00th=[ 1070], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7515, max= 8126, per=86.36%, avg=7820.50, stdev=432.04, 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=0.00%, sys=5.51%, ctx=57, 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=4528KiB/s (4637kB/s), 1132KiB/s-4428KiB/s (1159kB/s-4534kB/s), io=16.0MiB (16.8MB), run=2775-3618msec WRITE: bw=9057KiB/s (9274kB/s), 2264KiB/s-4288KiB/s (2319kB/s-4390kB/s), io=32.0MiB (33.6MB), run=2866-3618msec | 30.00th=[ 342], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min=16351, max=16351, per=100.00%, avg=16351.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.69%, ctx=40, 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=5218KiB/s (5343kB/s), 1304KiB/s-4051KiB/s (1336kB/s-4149kB/s), io=16.0MiB (16.8MB), run=3033-3140msec WRITE: bw=7965KiB/s (8156kB/s), 2609KiB/s-4929KiB/s (2672kB/s-5047kB/s), io=32.0MiB (33.6MB), run=2493-4114msec