== sanity test 398b: DIO and buffer IO race ============== 20:17:43 (1788567463) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.49024 s, 6.7 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=143719: Fri Sep 4 20:20:49 2026 read: IOPS=9, BW=36.9KiB/s (37.8kB/s)(5992KiB/162358msec) clat (usec): min=29, max=397719, avg=52709.15, stdev=44646.73 lat (usec): min=29, max=397720, avg=52711.24, stdev=44646.37 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 56], 10.00th=[ 73], 20.00th=[ 21627], | 30.00th=[ 29230], 40.00th=[ 35390], 50.00th=[ 43779], 60.00th=[ 52167], | 70.00th=[ 62653], 80.00th=[ 79168], 90.00th=[103285], 95.00th=[131597], | 99.00th=[221250], 99.50th=[250610], 99.90th=[387974], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 7, max= 119, per=25.36%, avg=37.02, stdev=19.07, samples=313 iops : min= 1, max= 29, avg= 8.60, stdev= 4.81, samples=313 write: IOPS=9, BW=38.8KiB/s (39.7kB/s)(6296KiB/162358msec); 0 zone resets clat (usec): min=958, max=730802, avg=52792.42, stdev=59236.09 lat (usec): min=959, max=730804, avg=52797.93, stdev=59241.50 clat percentiles (usec): | 1.00th=[ 1012], 5.00th=[ 1123], 10.00th=[ 1221], 20.00th=[ 3195], | 30.00th=[ 8848], 40.00th=[ 20055], 50.00th=[ 35390], 60.00th=[ 51643], | 70.00th=[ 69731], 80.00th=[ 92799], 90.00th=[132645], 95.00th=[164627], | 99.00th=[240124], 99.50th=[270533], 99.90th=[429917], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 7, max= 111, per=25.26%, avg=38.39, stdev=18.04, samples=317 iops : min= 1, max= 27, avg= 8.95, stdev= 4.55, samples=317 lat (usec) : 50=0.88%, 100=4.59%, 250=0.20%, 500=0.07%, 1000=0.29% lat (msec) : 2=8.37%, 4=2.77%, 10=5.24%, 20=6.54%, 50=29.69% lat (msec) : 100=26.95%, 250=13.77%, 500=0.62%, 750=0.03% cpu : usr=0.06%, sys=4.05%, ctx=6059, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143720: Fri Sep 4 20:20:49 2026 read: IOPS=9, BW=36.6KiB/s (37.5kB/s)(5940KiB/162344msec) clat (usec): min=26, max=780869, avg=51651.81, stdev=46716.91 lat (usec): min=26, max=780871, avg=51673.37, stdev=46766.80 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 56], 10.00th=[ 68], 20.00th=[ 19006], | 30.00th=[ 27395], 40.00th=[ 34341], 50.00th=[ 42206], 60.00th=[ 51119], | 70.00th=[ 62129], 80.00th=[ 79168], 90.00th=[107480], 95.00th=[135267], | 99.00th=[185598], 99.50th=[210764], 99.90th=[341836], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 7, max= 98, per=25.09%, avg=36.63, stdev=18.00, samples=314 iops : min= 1, max= 24, avg= 8.50, stdev= 4.55, samples=314 write: IOPS=9, BW=39.1KiB/s (40.0kB/s)(6348KiB/162344msec); 0 zone resets clat (usec): min=697, max=379493, avg=53720.55, stdev=54883.91 lat (usec): min=697, max=379495, avg=53723.14, stdev=54882.98 clat percentiles (usec): | 1.00th=[ 1004], 5.00th=[ 1139], 10.00th=[ 1237], 20.00th=[ 3589], | 30.00th=[ 11338], 40.00th=[ 25297], 50.00th=[ 39584], 60.00th=[ 54264], | 70.00th=[ 70779], 80.00th=[ 95945], 90.00th=[130548], 95.00th=[164627], | 99.00th=[223347], 99.50th=[265290], 99.90th=[350225], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 7, max= 125, per=25.65%, avg=38.98, stdev=19.11, samples=316 iops : min= 1, max= 31, avg= 9.09, stdev= 4.83, samples=316 lat (usec) : 50=0.91%, 100=4.98%, 250=0.29%, 500=0.13%, 750=0.10% lat (usec) : 1000=0.42% lat (msec) : 2=7.29%, 4=3.06%, 10=4.65%, 20=7.52%, 50=28.19% lat (msec) : 100=27.18%, 250=14.71%, 500=0.52%, 1000=0.03% cpu : usr=0.06%, sys=4.01%, ctx=6050, 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=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=143721: Fri Sep 4 20:20:49 2026 read: IOPS=9, BW=36.7KiB/s (37.6kB/s)(6028KiB/164371msec) clat (usec): min=31, max=375129, avg=50010.24, stdev=43552.68 lat (usec): min=31, max=375130, avg=50012.24, stdev=43551.79 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 56], 10.00th=[ 68], 20.00th=[ 19006], | 30.00th=[ 26084], 40.00th=[ 33817], 50.00th=[ 41157], 60.00th=[ 49546], | 70.00th=[ 61604], 80.00th=[ 76022], 90.00th=[100140], 95.00th=[123208], | 99.00th=[208667], 99.50th=[283116], 99.90th=[367002], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 7, max= 111, per=24.99%, avg=36.49, stdev=20.18, samples=319 iops : min= 1, max= 27, avg= 8.47, stdev= 5.10, samples=319 write: IOPS=9, BW=38.1KiB/s (38.0kB/s)(6260KiB/164371msec); 0 zone resets clat (usec): min=781, max=942854, avg=56682.88, stdev=64335.76 lat (usec): min=782, max=942857, avg=56686.63, stdev=64336.91 clat percentiles (usec): | 1.00th=[ 1012], 5.00th=[ 1123], 10.00th=[ 1254], 20.00th=[ 3982], | 30.00th=[ 9896], 40.00th=[ 26608], 50.00th=[ 40109], 60.00th=[ 56886], | 70.00th=[ 74974], 80.00th=[ 96994], 90.00th=[135267], 95.00th=[173016], | 99.00th=[258999], 99.50th=[341836], 99.90th=[557843], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 6, max= 118, per=24.99%, avg=37.98, stdev=18.72, samples=318 iops : min= 1, max= 29, avg= 8.84, stdev= 4.70, samples=318 lat (usec) : 50=1.17%, 100=4.79%, 250=0.36%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.46% lat (msec) : 2=7.16%, 4=2.73%, 10=5.47%, 20=7.29%, 50=28.52% lat (msec) : 100=27.25%, 250=13.80%, 500=0.81%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=3.87%, ctx=6018, 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=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=143722: Fri Sep 4 20:20:49 2026 read: IOPS=9, BW=37.1KiB/s (37.0kB/s)(6052KiB/163178msec) clat (usec): min=32, max=317462, avg=50237.26, stdev=42184.14 lat (usec): min=32, max=317464, avg=50240.09, stdev=42184.35 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 56], 10.00th=[ 69], 20.00th=[ 20055], | 30.00th=[ 27395], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 49021], | 70.00th=[ 60031], 80.00th=[ 77071], 90.00th=[102237], 95.00th=[129500], | 99.00th=[202376], 99.50th=[242222], 99.90th=[308282], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 102, per=25.76%, avg=37.61, stdev=18.45, samples=312 iops : min= 1, max= 25, avg= 8.75, stdev= 4.64, samples=312 write: IOPS=9, BW=38.2KiB/s (39.1kB/s)(6236KiB/163178msec); 0 zone resets clat (usec): min=703, max=1003.1k, avg=55746.56, stdev=64268.85 lat (usec): min=704, max=1003.1k, avg=55750.78, stdev=64267.70 clat percentiles (usec): | 1.00th=[ 1004], 5.00th=[ 1123], 10.00th=[ 1237], | 20.00th=[ 3752], 30.00th=[ 9896], 40.00th=[ 25560], | 50.00th=[ 40109], 60.00th=[ 55837], 70.00th=[ 73925], | 80.00th=[ 93848], 90.00th=[ 133694], 95.00th=[ 170918], | 99.00th=[ 261096], 99.50th=[ 308282], 99.90th=[ 541066], | 99.95th=[1002439], 99.99th=[1002439] bw ( KiB/s): min= 7, max= 87, per=25.26%, avg=38.39, stdev=16.64, samples=315 iops : min= 1, max= 21, avg= 8.95, stdev= 4.20, samples=315 lat (usec) : 50=0.98%, 100=4.98%, 250=0.29%, 500=0.13%, 750=0.16% lat (usec) : 1000=0.39% lat (msec) : 2=7.23%, 4=2.70%, 10=5.27%, 20=6.58%, 50=29.85% lat (msec) : 100=26.89%, 250=13.70%, 500=0.78%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=3.91%, ctx=6036, 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=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=146KiB/s (150kB/s), 36.6KiB/s-37.1KiB/s (37.5kB/s-37.0kB/s), io=23.4MiB (24.6MB), run=162344-164371msec WRITE: bw=153KiB/s (157kB/s), 38.1KiB/s-39.1KiB/s (38.0kB/s-40.0kB/s), io=24.6MiB (25.7MB), run=162344-164371msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143714: Fri Sep 4 20:23:25 2026 read: IOPS=4, BW=18.8KiB/s (19.3kB/s)(5992KiB/318298msec) clat (msec): min=5, max=593, avg=41.76, stdev=47.10 lat (msec): min=5, max=593, avg=41.76, stdev=47.10 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 59], 90.00th=[ 102], 95.00th=[ 136], | 99.00th=[ 224], 99.50th=[ 271], 99.90th=[ 418], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 7, max= 96, per=30.53%, avg=22.59, stdev=15.89, samples=511 iops : min= 1, max= 24, avg= 5.02, stdev= 4.03, samples=511 write: IOPS=4, BW=19.8KiB/s (20.3kB/s)(6296KiB/318298msec); 0 zone resets clat (msec): min=33, max=933, avg=162.18, stdev=90.89 lat (msec): min=33, max=933, avg=162.18, stdev=90.89 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 67], 10.00th=[ 80], 20.00th=[ 94], | 30.00th=[ 107], 40.00th=[ 123], 50.00th=[ 136], 60.00th=[ 155], | 70.00th=[ 182], 80.00th=[ 218], 90.00th=[ 288], 95.00th=[ 342], | 99.00th=[ 468], 99.50th=[ 518], 99.90th=[ 860], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 56, per=25.58%, avg=19.95, stdev=10.19, samples=604 iops : min= 1, max= 14, avg= 4.34, stdev= 2.61, samples=604 lat (msec) : 10=3.78%, 20=15.79%, 50=18.33%, 100=18.46%, 250=35.84% lat (msec) : 500=7.45%, 750=0.29%, 1000=0.07% cpu : usr=0.04%, sys=0.90%, ctx=5038, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143715: Fri Sep 4 20:23:25 2026 read: IOPS=4, BW=18.5KiB/s (18.0kB/s)(5940KiB/320542msec) clat (msec): min=5, max=838, avg=41.61, stdev=52.25 lat (msec): min=5, max=838, avg=41.61, stdev=52.25 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 53], 90.00th=[ 103], 95.00th=[ 140], | 99.00th=[ 234], 99.50th=[ 300], 99.90th=[ 558], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 88, per=29.93%, avg=22.15, stdev=15.43, samples=515 iops : min= 1, max= 22, avg= 4.91, stdev= 3.90, samples=515 write: IOPS=4, BW=19.8KiB/s (20.3kB/s)(6348KiB/320542msec); 0 zone resets clat (msec): min=37, max=702, avg=162.80, stdev=90.95 lat (msec): min=37, max=702, avg=162.80, stdev=90.95 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 66], 10.00th=[ 78], 20.00th=[ 95], | 30.00th=[ 109], 40.00th=[ 121], 50.00th=[ 138], 60.00th=[ 155], | 70.00th=[ 180], 80.00th=[ 220], 90.00th=[ 292], 95.00th=[ 351], | 99.00th=[ 472], 99.50th=[ 550], 99.90th=[ 642], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 64, per=25.44%, avg=19.84, stdev=10.30, samples=612 iops : min= 1, max= 16, avg= 4.32, stdev= 2.65, samples=612 lat (msec) : 10=3.55%, 20=15.98%, 50=19.21%, 100=16.83%, 250=36.52% lat (msec) : 500=7.45%, 750=0.42%, 1000=0.03% cpu : usr=0.03%, sys=0.87%, ctx=4887, 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=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=143716: Fri Sep 4 20:23:25 2026 read: IOPS=4, BW=18.8KiB/s (19.2kB/s)(6028KiB/320846msec) clat (msec): min=5, max=579, avg=41.99, stdev=46.48 lat (msec): min=5, max=579, avg=41.99, stdev=46.48 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 59], 90.00th=[ 105], 95.00th=[ 138], | 99.00th=[ 205], 99.50th=[ 264], 99.90th=[ 456], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 120, per=29.99%, avg=22.20, stdev=15.76, samples=522 iops : min= 1, max= 30, avg= 4.92, stdev= 4.01, samples=522 write: IOPS=4, BW=19.5KiB/s (19.0kB/s)(6260KiB/320846msec); 0 zone resets clat (msec): min=32, max=902, avg=164.33, stdev=93.75 lat (msec): min=32, max=902, avg=164.33, stdev=93.75 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 68], 10.00th=[ 79], 20.00th=[ 95], | 30.00th=[ 111], 40.00th=[ 126], 50.00th=[ 140], 60.00th=[ 159], | 70.00th=[ 182], 80.00th=[ 215], 90.00th=[ 288], 95.00th=[ 351], | 99.00th=[ 485], 99.50th=[ 527], 99.90th=[ 885], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 56, per=25.11%, avg=19.59, stdev=10.11, samples=611 iops : min= 1, max= 14, avg= 4.25, stdev= 2.60, samples=611 lat (msec) : 10=3.87%, 20=15.04%, 50=19.01%, 100=17.61%, 250=37.14% lat (msec) : 500=6.97%, 750=0.26%, 1000=0.10% cpu : usr=0.03%, sys=0.92%, ctx=4927, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143717: Fri Sep 4 20:23:25 2026 read: IOPS=4, BW=19.0KiB/s (19.5kB/s)(6052KiB/317793msec) clat (msec): min=5, max=353, avg=41.11, stdev=44.47 lat (msec): min=5, max=353, avg=41.11, stdev=44.47 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 38], 80.00th=[ 58], 90.00th=[ 99], 95.00th=[ 138], | 99.00th=[ 218], 99.50th=[ 259], 99.90th=[ 313], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 7, max= 112, per=31.00%, avg=22.94, stdev=16.51, samples=508 iops : min= 1, max= 28, avg= 5.10, stdev= 4.20, samples=508 write: IOPS=4, BW=19.6KiB/s (20.1kB/s)(6236KiB/317793msec); 0 zone resets clat (msec): min=37, max=923, avg=163.69, stdev=93.24 lat (msec): min=37, max=923, avg=163.69, stdev=93.24 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 80], 20.00th=[ 95], | 30.00th=[ 108], 40.00th=[ 121], 50.00th=[ 136], 60.00th=[ 155], | 70.00th=[ 182], 80.00th=[ 226], 90.00th=[ 292], 95.00th=[ 351], | 99.00th=[ 456], 99.50th=[ 567], 99.90th=[ 902], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7, max= 48, per=25.39%, avg=19.80, stdev=10.14, samples=603 iops : min= 1, max= 12, avg= 4.31, stdev= 2.61, samples=603 lat (msec) : 10=3.48%, 20=15.79%, 50=19.01%, 100=18.46%, 250=35.25% lat (msec) : 500=7.65%, 750=0.29%, 1000=0.07% cpu : usr=0.03%, sys=0.92%, ctx=5009, 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=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=74.8KiB/s (76.6kB/s), 18.5KiB/s-19.0KiB/s (18.0kB/s-19.5kB/s), io=23.4MiB (24.6MB), run=317793-320846msec WRITE: bw=78.4KiB/s (80.2kB/s), 19.5KiB/s-19.8KiB/s (19.0kB/s-20.3kB/s), io=24.6MiB (25.7MB), run=317793-320846msec 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=143785: Fri Sep 4 20:24:15 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(5920KiB/36662msec) clat (usec): min=39, max=248011, avg=49015.13, stdev=40153.27 lat (usec): min=39, max=248012, avg=49016.67, stdev=40153.04 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 58], 10.00th=[ 64], 20.00th=[ 89], | 30.00th=[ 27657], 40.00th=[ 35914], 50.00th=[ 46400], 60.00th=[ 55837], | 70.00th=[ 63177], 80.00th=[ 79168], 90.00th=[100140], 95.00th=[119014], | 99.00th=[170918], 99.50th=[173016], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 62, max= 283, per=25.17%, avg=163.85, stdev=56.90, samples=71 iops : min= 3, max= 17, avg= 9.45, stdev= 3.64, samples=71 write: IOPS=10, BW=174KiB/s (178kB/s)(6368KiB/36662msec); 0 zone resets clat (usec): min=1283, max=471858, avg=45465.76, stdev=54655.41 lat (usec): min=1284, max=471861, avg=45471.25, stdev=54656.81 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1795], 10.00th=[ 2474], 20.00th=[ 4752], | 30.00th=[ 8455], 40.00th=[ 14746], 50.00th=[ 26608], 60.00th=[ 40633], | 70.00th=[ 55313], 80.00th=[ 81265], 90.00th=[116917], 95.00th=[139461], | 99.00th=[283116], 99.50th=[333448], 99.90th=[471860], 99.95th=[471860], | 99.99th=[471860] bw ( KiB/s): min= 23, max= 380, per=25.37%, avg=173.79, stdev=81.82, samples=72 iops : min= 1, max= 23, avg=10.07, stdev= 5.13, samples=72 lat (usec) : 50=1.30%, 100=8.59%, 250=0.39%, 500=0.13% lat (msec) : 2=3.52%, 4=4.95%, 10=10.29%, 20=6.51%, 50=25.13% lat (msec) : 100=27.08%, 250=11.59%, 500=0.52% cpu : usr=0.06%, sys=4.21%, ctx=1404, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143787: Fri Sep 4 20:24:15 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(5744KiB/35249msec) clat (usec): min=36, max=381207, avg=49957.53, stdev=42773.16 lat (usec): min=36, max=381209, avg=49962.06, stdev=42769.59 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 61], 10.00th=[ 71], 20.00th=[ 2040], | 30.00th=[ 29492], 40.00th=[ 38011], 50.00th=[ 46924], 60.00th=[ 54789], | 70.00th=[ 64750], 80.00th=[ 79168], 90.00th=[ 95945], 95.00th=[114820], | 99.00th=[219153], 99.50th=[258999], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 30, max= 440, per=25.03%, avg=162.94, stdev=88.16, samples=69 iops : min= 1, max= 27, avg= 9.36, stdev= 5.57, samples=69 write: IOPS=11, BW=186KiB/s (190kB/s)(6544KiB/35249msec); 0 zone resets clat (usec): min=1349, max=382999, avg=41978.27, stdev=47427.80 lat (usec): min=1352, max=383003, avg=41980.73, stdev=47427.95 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1729], 10.00th=[ 2114], 20.00th=[ 5211], | 30.00th=[ 8029], 40.00th=[ 13698], 50.00th=[ 23200], 60.00th=[ 38536], | 70.00th=[ 54789], 80.00th=[ 76022], 90.00th=[107480], 95.00th=[131597], | 99.00th=[189793], 99.50th=[196084], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 31, max= 444, per=27.05%, avg=185.26, stdev=82.22, samples=69 iops : min= 1, max= 27, avg=10.77, stdev= 5.17, samples=69 lat (usec) : 50=1.30%, 100=6.25%, 250=1.17%, 500=0.13%, 1000=0.13% lat (msec) : 2=5.21%, 4=3.26%, 10=10.55%, 20=8.33%, 50=24.35% lat (msec) : 100=29.56%, 250=9.38%, 500=0.39% cpu : usr=0.07%, sys=4.68%, ctx=1373, 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=143788: Fri Sep 4 20:24:15 2026 read: IOPS=11, BW=180KiB/s (184kB/s)(6256KiB/34759msec) clat (usec): min=37, max=254330, avg=47162.54, stdev=40141.47 lat (usec): min=37, max=254330, avg=47163.89, stdev=40141.49 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 57], 10.00th=[ 67], 20.00th=[ 100], | 30.00th=[ 24773], 40.00th=[ 35390], 50.00th=[ 43779], 60.00th=[ 52691], | 70.00th=[ 64226], 80.00th=[ 76022], 90.00th=[ 94897], 95.00th=[112722], | 99.00th=[206570], 99.50th=[227541], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 31, max= 381, per=27.79%, avg=180.91, stdev=82.61, samples=68 iops : min= 1, max= 23, avg=10.50, stdev= 5.20, samples=68 write: IOPS=10, BW=174KiB/s (178kB/s)(6032KiB/34759msec); 0 zone resets clat (usec): min=1519, max=264988, avg=42262.74, stdev=46563.89 lat (usec): min=1522, max=264992, avg=42265.29, stdev=46564.00 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1729], 10.00th=[ 2057], 20.00th=[ 5342], | 30.00th=[ 8717], 40.00th=[ 16712], 50.00th=[ 26608], 60.00th=[ 40109], | 70.00th=[ 51119], 80.00th=[ 71828], 90.00th=[106431], 95.00th=[137364], | 99.00th=[219153], 99.50th=[258999], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 31, max= 379, per=25.77%, avg=176.51, stdev=79.69, samples=67 iops : min= 1, max= 23, avg=10.22, stdev= 5.01, samples=67 lat (usec) : 50=1.17%, 100=9.11%, 250=0.91%, 500=0.26%, 750=0.13% lat (msec) : 2=4.69%, 4=2.86%, 10=8.59%, 20=7.03%, 50=27.73% lat (msec) : 100=26.95%, 250=10.16%, 500=0.39% cpu : usr=0.05%, sys=4.68%, ctx=1402, 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=143791: Fri Sep 4 20:24:15 2026 read: IOPS=10, BW=164KiB/s (168kB/s)(6032KiB/36778msec) clat (usec): min=40, max=349844, avg=48680.42, stdev=44218.03 lat (usec): min=41, max=349845, avg=48681.83, stdev=44217.97 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 59], 10.00th=[ 66], 20.00th=[ 84], | 30.00th=[ 23987], 40.00th=[ 34866], 50.00th=[ 44827], 60.00th=[ 53740], | 70.00th=[ 62129], 80.00th=[ 80217], 90.00th=[ 98042], 95.00th=[128451], | 99.00th=[206570], 99.50th=[235930], 99.90th=[350225], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 31, max= 439, per=26.11%, avg=170.00, stdev=81.98, samples=69 iops : min= 1, max= 27, avg= 9.83, stdev= 5.21, samples=69 write: IOPS=10, BW=170KiB/s (174kB/s)(6256KiB/36778msec); 0 zone resets clat (usec): min=1443, max=351046, avg=45632.40, stdev=57240.02 lat (usec): min=1445, max=351049, avg=45635.01, stdev=57240.03 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1680], 10.00th=[ 2245], 20.00th=[ 5473], | 30.00th=[ 8979], 40.00th=[ 13829], 50.00th=[ 24773], 60.00th=[ 36963], | 70.00th=[ 50594], 80.00th=[ 82314], 90.00th=[114820], 95.00th=[145753], | 99.00th=[329253], 99.50th=[350225], 99.90th=[350225], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 31, max= 416, per=25.61%, avg=175.41, stdev=88.11, samples=70 iops : min= 1, max= 26, avg=10.16, stdev= 5.55, samples=70 lat (usec) : 50=0.91%, 100=10.03%, 250=0.65%, 1000=0.13% lat (msec) : 2=4.95%, 4=4.04%, 10=8.20%, 20=7.55%, 50=26.43% lat (msec) : 100=26.17%, 250=10.03%, 500=0.91% cpu : usr=0.04%, sys=4.25%, ctx=1394, 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=651KiB/s (667kB/s), 161KiB/s-180KiB/s (165kB/s-184kB/s), io=23.4MiB (24.5MB), run=34759-36778msec WRITE: bw=685KiB/s (702kB/s), 170KiB/s-186KiB/s (174kB/s-190kB/s), io=24.6MiB (25.8MB), run=34759-36778msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143786: Fri Sep 4 20:25:04 2026 read: IOPS=4, BW=68.4KiB/s (70.1kB/s)(5920KiB/86498msec) clat (msec): min=8, max=315, avg=45.10, stdev=44.07 lat (msec): min=8, max=315, avg=45.10, stdev=44.07 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 42], 80.00th=[ 58], 90.00th=[ 89], 95.00th=[ 125], | 99.00th=[ 243], 99.50th=[ 275], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 30, max= 286, per=29.59%, avg=81.66, stdev=50.82, samples=142 iops : min= 1, max= 17, avg= 4.35, stdev= 3.25, samples=142 write: IOPS=4, BW=73.6KiB/s (75.4kB/s)(6368KiB/86498msec); 0 zone resets clat (msec): min=62, max=511, avg=175.23, stdev=75.92 lat (msec): min=62, max=511, avg=175.23, stdev=75.92 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 86], 10.00th=[ 97], 20.00th=[ 113], | 30.00th=[ 129], 40.00th=[ 146], 50.00th=[ 161], 60.00th=[ 176], | 70.00th=[ 197], 80.00th=[ 228], 90.00th=[ 271], 95.00th=[ 330], | 99.00th=[ 435], 99.50th=[ 485], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 23, max= 159, per=25.87%, avg=75.01, stdev=31.37, samples=166 iops : min= 1, max= 9, avg= 3.93, stdev= 1.99, samples=166 lat (msec) : 10=0.78%, 20=8.98%, 50=27.21%, 100=13.28%, 250=42.06% lat (msec) : 500=7.55%, 750=0.13% cpu : usr=0.03%, sys=0.96%, ctx=1265, 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=143789: Fri Sep 4 20:25:04 2026 read: IOPS=4, BW=66.3KiB/s (67.9kB/s)(5744KiB/86639msec) clat (msec): min=7, max=393, avg=47.65, stdev=51.09 lat (msec): min=7, max=393, avg=47.65, stdev=51.09 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 64], 90.00th=[ 102], 95.00th=[ 153], | 99.00th=[ 271], 99.50th=[ 338], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 23, max= 285, per=30.33%, avg=83.70, stdev=53.80, samples=135 iops : min= 1, max= 17, avg= 4.49, stdev= 3.41, samples=135 write: IOPS=4, BW=75.5KiB/s (77.3kB/s)(6544KiB/86639msec); 0 zone resets clat (msec): min=44, max=611, avg=169.14, stdev=75.21 lat (msec): min=44, max=611, avg=169.15, stdev=75.21 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 81], 10.00th=[ 94], 20.00th=[ 110], | 30.00th=[ 128], 40.00th=[ 142], 50.00th=[ 155], 60.00th=[ 167], | 70.00th=[ 188], 80.00th=[ 218], 90.00th=[ 259], 95.00th=[ 305], | 99.00th=[ 426], 99.50th=[ 493], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 30, max= 160, per=27.01%, avg=78.33, stdev=31.03, samples=164 iops : min= 1, max= 10, avg= 4.13, stdev= 2.00, samples=164 lat (msec) : 10=0.91%, 20=10.55%, 50=23.18%, 100=13.93%, 250=44.92% lat (msec) : 500=6.25%, 750=0.26% cpu : usr=0.03%, sys=0.91%, ctx=1218, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143790: Fri Sep 4 20:25:04 2026 read: IOPS=4, BW=74.2KiB/s (75.0kB/s)(6256KiB/84297msec) clat (msec): min=8, max=331, avg=45.61, stdev=45.79 lat (msec): min=8, max=331, avg=45.61, stdev=45.79 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 86], 95.00th=[ 146], | 99.00th=[ 264], 99.50th=[ 284], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 30, max= 287, per=30.84%, avg=85.13, stdev=53.67, samples=145 iops : min= 1, max= 17, avg= 4.54, stdev= 3.39, samples=145 write: IOPS=4, BW=71.6KiB/s (73.3kB/s)(6032KiB/84297msec); 0 zone resets clat (msec): min=47, max=463, avg=175.01, stdev=73.97 lat (msec): min=47, max=463, avg=175.02, stdev=73.97 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 83], 10.00th=[ 96], 20.00th=[ 117], | 30.00th=[ 127], 40.00th=[ 146], 50.00th=[ 163], 60.00th=[ 180], | 70.00th=[ 199], 80.00th=[ 224], 90.00th=[ 275], 95.00th=[ 326], | 99.00th=[ 418], 99.50th=[ 460], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 30, max= 160, per=25.11%, avg=72.83, stdev=29.92, samples=162 iops : min= 1, max= 10, avg= 3.78, stdev= 1.94, samples=162 lat (msec) : 10=0.39%, 20=9.24%, 50=30.08%, 100=12.50%, 250=40.49% lat (msec) : 500=7.29% cpu : usr=0.04%, sys=1.03%, ctx=1324, 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=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=143792: Fri Sep 4 20:25:04 2026 read: IOPS=4, BW=70.8KiB/s (72.5kB/s)(6032KiB/85201msec) clat (msec): min=8, max=328, avg=42.44, stdev=41.36 lat (msec): min=8, max=328, avg=42.44, stdev=41.36 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 54], 90.00th=[ 81], 95.00th=[ 128], | 99.00th=[ 209], 99.50th=[ 288], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 30, max= 318, per=30.50%, avg=84.17, stdev=55.57, samples=140 iops : min= 1, max= 19, avg= 4.51, stdev= 3.57, samples=140 write: IOPS=4, BW=73.4KiB/s (75.2kB/s)(6256KiB/85201msec); 0 zone resets clat (msec): min=58, max=611, avg=175.72, stdev=82.78 lat (msec): min=58, max=611, avg=175.72, stdev=82.78 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 90], 10.00th=[ 97], 20.00th=[ 114], | 30.00th=[ 126], 40.00th=[ 140], 50.00th=[ 157], 60.00th=[ 174], | 70.00th=[ 188], 80.00th=[ 222], 90.00th=[ 284], 95.00th=[ 363], | 99.00th=[ 464], 99.50th=[ 506], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 30, max= 158, per=25.97%, avg=75.32, stdev=31.27, samples=163 iops : min= 1, max= 9, avg= 3.94, stdev= 2.03, samples=163 lat (msec) : 10=0.78%, 20=11.07%, 50=26.56%, 100=13.54%, 250=40.76% lat (msec) : 500=7.03%, 750=0.26% cpu : usr=0.03%, sys=0.98%, ctx=1212, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=276KiB/s (283kB/s), 66.3KiB/s-74.2KiB/s (67.9kB/s-75.0kB/s), io=23.4MiB (24.5MB), run=84297-86639msec WRITE: bw=291KiB/s (298kB/s), 71.6KiB/s-75.5KiB/s (73.3kB/s-77.3kB/s), io=24.6MiB (25.8MB), run=84297-86639msec 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=143815: Fri Sep 4 20:25:28 2026 read: IOPS=0, BW=967KiB/s (990kB/s)(7168KiB/7411msec) clat (usec): min=506, max=3288.1k, avg=678469.57, stdev=1172478.05 lat (usec): min=507, max=3288.1k, avg=678471.22, stdev=1172477.95 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], | 20.00th=[ 578], 30.00th=[ 145753], 40.00th=[ 145753], | 50.00th=[ 240124], 60.00th=[ 492831], 70.00th=[ 492831], | 80.00th=[ 583009], 90.00th=[3271558], 95.00th=[3271558], | 99.00th=[3271558], 99.50th=[3271558], 99.90th=[3271558], | 99.95th=[3271558], 99.99th=[3271558] bw ( KiB/s): min= 2007, max= 4055, per=100.00%, avg=3028.00, stdev=1172.07, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=691KiB/s (707kB/s)(5120KiB/7411msec); 0 zone resets clat (msec): min=220, max=880, avg=474.24, stdev=263.29 lat (msec): min=220, max=880, avg=474.31, stdev=263.24 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 259], 40.00th=[ 259], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1914, max= 6059, per=86.25%, avg=3336.00, stdev=2358.96, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (usec) : 750=16.67% lat (msec) : 250=25.00%, 500=16.67%, 750=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=5.44%, ctx=252, 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=143816: Fri Sep 4 20:25:28 2026 read: IOPS=0, BW=302KiB/s (309kB/s)(2048KiB/6782msec) clat (usec): min=502, max=345432, avg=172967.23, stdev=243902.47 lat (usec): min=503, max=345435, avg=172969.47, stdev=243903.81 clat percentiles (usec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[346031], | 70.00th=[346031], 80.00th=[346031], 90.00th=[346031], 95.00th=[346031], | 99.00th=[346031], 99.50th=[346031], 99.90th=[346031], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 1924, max= 2027, per=71.50%, avg=1975.50, stdev=72.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1510KiB/s (1546kB/s)(10.0MiB/6782msec); 0 zone resets clat (msec): min=74, max=1594, avg=594.60, stdev=496.01 lat (msec): min=74, max=1594, avg=594.75, stdev=496.04 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 186], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 384], 60.00th=[ 401], | 70.00th=[ 768], 80.00th=[ 877], 90.00th=[ 1167], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 1910, max= 5774, per=74.58%, avg=2884.83, stdev=1554.90, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 1000=16.67%, 2000=16.67% cpu : usr=0.00%, sys=6.80%, ctx=131, 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=143817: Fri Sep 4 20:25:28 2026 read: IOPS=0, BW=922KiB/s (944kB/s)(6144KiB/6664msec) clat (usec): min=490, max=499046, avg=294031.15, stdev=232240.16 lat (usec): min=491, max=499047, avg=294032.48, stdev=232240.00 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 2343], | 30.00th=[ 2343], 40.00th=[367002], 50.00th=[367002], 60.00th=[404751], | 70.00th=[492831], 80.00th=[492831], 90.00th=[497026], 95.00th=[497026], | 99.00th=[497026], 99.50th=[497026], 99.90th=[497026], 99.95th=[497026], | 99.99th=[497026] bw ( KiB/s): min= 1796, max= 4015, per=88.97%, avg=2458.25, stdev=1042.78, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=922KiB/s (944kB/s)(6144KiB/6664msec); 0 zone resets clat (msec): min=135, max=1601, avg=807.11, stdev=597.02 lat (msec): min=135, max=1601, avg=807.21, stdev=597.04 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 1083], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 1910, max= 3471, per=60.12%, avg=2325.50, stdev=764.98, 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=8.33%, 500=50.00%, 2000=25.00% cpu : usr=0.05%, sys=8.37%, ctx=119, 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=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=143818: Fri Sep 4 20:25:28 2026 read: IOPS=0, BW=817KiB/s (837kB/s)(5120KiB/6264msec) clat (msec): min=2, max=555, avg=200.85, stdev=227.13 lat (msec): min=2, max=555, avg=200.85, stdev=227.13 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 3], | 30.00th=[ 24], 40.00th=[ 24], 50.00th=[ 142], 60.00th=[ 142], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 7185, max= 7185, per=100.00%, avg=7185.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1144KiB/s (1172kB/s)(7168KiB/6264msec); 0 zone resets clat (msec): min=213, max=2017, avg=723.27, stdev=735.62 lat (msec): min=213, max=2018, avg=723.49, stdev=735.85 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 279], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 1536], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 1825, max= 4031, per=60.91%, avg=2356.00, stdev=939.43, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 4=8.33%, 50=8.33%, 250=16.67%, 500=41.67%, 750=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.69%, ctx=136, 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=2763KiB/s (2830kB/s), 302KiB/s-967KiB/s (309kB/s-990kB/s), io=20.0MiB (20.0MB), run=6264-7411msec WRITE: bw=3869KiB/s (3962kB/s), 691KiB/s-1510KiB/s (707kB/s-1546kB/s), io=28.0MiB (29.4MB), run=6264-7411msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143820: Fri Sep 4 20:25:29 2026 read: IOPS=0, BW=866KiB/s (887kB/s)(7168KiB/8279msec) clat (msec): min=35, max=1994, avg=756.47, stdev=765.30 lat (msec): min=35, max=1994, avg=756.48, stdev=765.30 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 36], 10.00th=[ 36], 20.00th=[ 89], | 30.00th=[ 163], 40.00th=[ 163], 50.00th=[ 709], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 1569], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 1917, max= 2043, per=80.66%, avg=1994.83, stdev=42.19, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=618KiB/s (633kB/s)(5120KiB/8279msec); 0 zone resets clat (msec): min=82, max=1358, avg=453.01, stdev=523.14 lat (msec): min=82, max=1358, avg=453.12, stdev=523.18 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 83], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 239], 60.00th=[ 239], | 70.00th=[ 435], 80.00th=[ 435], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 1957, max= 6011, per=96.02%, avg=3325.00, stdev=2326.28, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 50=8.33%, 100=16.67%, 250=25.00%, 500=8.33%, 750=16.67% lat (msec) : 2000=25.00% cpu : usr=0.00%, sys=1.46%, ctx=85, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143821: Fri Sep 4 20:25:29 2026 read: IOPS=0, BW=250KiB/s (256kB/s)(2048KiB/8200msec) clat (msec): min=320, max=944, avg=632.50, stdev=441.26 lat (msec): min=320, max=944, avg=632.50, stdev=441.26 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 944], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 2007, max= 2048, per=81.99%, avg=2027.50, stdev=28.99, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1249KiB/s (1279kB/s)(10.0MiB/8200msec); 0 zone resets clat (msec): min=195, max=1106, avg=674.22, stdev=368.59 lat (msec): min=195, max=1106, avg=675.41, stdev=369.96 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 224], | 30.00th=[ 426], 40.00th=[ 468], 50.00th=[ 472], 60.00th=[ 667], | 70.00th=[ 986], 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= 1961, max= 4015, per=66.12%, avg=2289.57, stdev=761.66, samples=7 iops : min= 1, max= 3, avg= 1.43, stdev= 0.79, samples=7 lat (msec) : 250=16.67%, 500=33.33%, 750=8.33%, 1000=16.67%, 2000=25.00% cpu : usr=0.01%, sys=2.10%, ctx=71, 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=143822: Fri Sep 4 20:25:29 2026 read: IOPS=0, BW=804KiB/s (824kB/s)(6144KiB/7638msec) clat (msec): min=181, max=959, avg=342.62, stdev=303.00 lat (msec): min=181, max=959, avg=342.63, stdev=303.00 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 230], | 70.00th=[ 247], 80.00th=[ 247], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 1954, max= 4096, per=100.00%, avg=3355.00, stdev=1213.98, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=0, BW=804KiB/s (824kB/s)(6144KiB/7638msec); 0 zone resets clat (msec): min=279, max=2041, avg=844.50, stdev=668.83 lat (msec): min=280, max=2041, avg=844.71, stdev=668.72 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 684], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 1954, max= 2048, per=58.35%, avg=2020.80, stdev=40.41, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.77%, ctx=82, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143823: Fri Sep 4 20:25:29 2026 read: IOPS=0, BW=644KiB/s (660kB/s)(5120KiB/7946msec) clat (msec): min=125, max=602, avg=290.24, stdev=181.64 lat (msec): min=125, max=602, avg=290.24, stdev=181.64 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 126], 10.00th=[ 126], 20.00th=[ 126], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 245], 60.00th=[ 245], | 70.00th=[ 249], 80.00th=[ 249], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 3915, max= 3923, per=100.00%, avg=3919.00, stdev= 5.66, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=902KiB/s (924kB/s)(7168KiB/7946msec); 0 zone resets clat (msec): min=233, max=2005, avg=866.30, stdev=602.28 lat (msec): min=233, max=2005, avg=866.41, stdev=602.28 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 422], | 30.00th=[ 485], 40.00th=[ 485], 50.00th=[ 835], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 1234], 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= 1932, max= 2048, per=57.75%, avg=2000.00, stdev=48.00, samples=6 iops : min= 1, max= 2, avg= 1.33, stdev= 0.52, samples=6 lat (msec) : 250=41.67%, 500=16.67%, 750=8.33%, 1000=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.88%, ctx=107, 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=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=2474KiB/s (2533kB/s), 250KiB/s-866KiB/s (256kB/s-887kB/s), io=20.0MiB (20.0MB), run=7638-8279msec WRITE: bw=3463KiB/s (3546kB/s), 618KiB/s-1249KiB/s (633kB/s-1279kB/s), io=28.0MiB (29.4MB), run=7638-8279msec 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=143831: Fri Sep 4 20:25:45 2026 read: IOPS=2, BW=9474KiB/s (9702kB/s)(12.0MiB/1297msec) clat (msec): min=203, max=535, avg=406.42, stdev=177.71 lat (msec): min=203, max=535, avg=406.43, stdev=177.69 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 535], 95.00th=[ 535], | 99.00th=[ 535], 99.50th=[ 535], 99.90th=[ 535], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 7684, max= 8078, per=100.00%, avg=7881.00, stdev=278.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=9.41%, 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=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=143832: Fri Sep 4 20:25:45 2026 read: IOPS=0, BW=1443KiB/s (1477kB/s)(4096KiB/2839msec) clat (nsec): min=1109.9M, max=1109.9M, avg=1109889918.00, stdev= 0.00 lat (nsec): min=1109.9M, max=1109.9M, avg=1109892380.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2886KiB/s (2955kB/s)(8192KiB/2839msec); 0 zone resets clat (msec): min=652, max=935, avg=794.07, stdev=200.67 lat (msec): min=654, max=936, avg=795.67, stdev=199.29 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 936], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7892, max= 7892, per=100.00%, avg=7892.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.31%, ctx=46, 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=143833: Fri Sep 4 20:25:45 2026 write: IOPS=0, BW=3458KiB/s (3541kB/s)(12.0MiB/3553msec); 0 zone resets clat (msec): min=789, max=1358, avg=1162.33, stdev=322.72 lat (msec): min=794, max=1358, avg=1164.16, stdev=320.66 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 1334], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7892, max= 8110, per=100.00%, avg=8001.00, stdev=154.15, 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=0.00%, sys=1.97%, ctx=30, 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=143834: Fri Sep 4 20:25:45 2026 write: IOPS=0, BW=2694KiB/s (2759kB/s)(12.0MiB/4561msec); 0 zone resets clat (msec): min=710, max=2986, avg=1476.39, stdev=1307.44 lat (msec): min=711, max=2986, avg=1476.87, stdev=1307.33 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 2970], 80.00th=[ 2970], 90.00th=[ 2970], 95.00th=[ 2970], | 99.00th=[ 2970], 99.50th=[ 2970], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] bw ( KiB/s): min= 8015, max= 8110, per=100.00%, avg=8062.50, stdev=67.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.02%, sys=2.94%, ctx=62, 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=5771KiB/s (5910kB/s), 1443KiB/s-9474KiB/s (1477kB/s-9702kB/s), io=16.0MiB (16.8MB), run=1297-2839msec WRITE: bw=7184KiB/s (7357kB/s), 2694KiB/s-3458KiB/s (2759kB/s-3541kB/s), io=32.0MiB (33.6MB), run=2839-4561msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143836: Fri Sep 4 20:25:47 2026 read: IOPS=0, BW=3366KiB/s (3446kB/s)(12.0MiB/3651msec) clat (msec): min=1099, max=1334, avg=1213.74, stdev=117.36 lat (msec): min=1099, max=1334, avg=1213.74, stdev=117.36 clat percentiles (msec): | 1.00th=[ 1099], 5.00th=[ 1099], 10.00th=[ 1099], 20.00th=[ 1099], | 30.00th=[ 1099], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7937, max= 8175, per=100.00%, avg=8056.00, stdev=168.29, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=6.66%, ctx=172, 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=143837: Fri Sep 4 20:25:47 2026 read: IOPS=0, BW=957KiB/s (980kB/s)(4096KiB/4282msec) clat (nsec): min=1542.2M, max=1542.2M, avg=1542191507.00, stdev= 0.00 lat (nsec): min=1542.2M, max=1542.2M, avg=1542193600.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1536], 5.00th=[ 1536], 10.00th=[ 1536], 20.00th=[ 1536], | 30.00th=[ 1536], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 1536], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7937, max= 7937, per=100.00%, avg=7937.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1913KiB/s (1959kB/s)(8192KiB/4282msec); 0 zone resets clat (msec): min=1252, max=1481, avg=1367.47, stdev=161.95 lat (msec): min=1254, max=1482, avg=1368.25, stdev=161.50 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=[ 1485], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=100.00% cpu : usr=0.05%, sys=3.69%, ctx=109, 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=143838: Fri Sep 4 20:25:47 2026 write: IOPS=0, BW=2939KiB/s (3010kB/s)(12.0MiB/4181msec); 0 zone resets clat (msec): min=809, max=1668, avg=1380.23, stdev=494.18 lat (msec): min=810, max=1668, avg=1380.69, stdev=493.96 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 1670], 50.00th=[ 1670], 60.00th=[ 1670], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 7641, max= 8031, per=100.00%, avg=7836.00, stdev=275.77, 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=0.05%, sys=4.59%, ctx=84, 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=143839: Fri Sep 4 20:25:47 2026 write: IOPS=0, BW=3339KiB/s (3419kB/s)(12.0MiB/3680msec); 0 zone resets clat (msec): min=758, max=1718, avg=1223.58, stdev=480.76 lat (msec): min=759, max=1719, avg=1225.34, stdev=480.55 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7641, max= 7937, per=100.00%, avg=7789.00, stdev=209.30, 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=0.00%, sys=1.55%, ctx=32, 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=3826KiB/s (3918kB/s), 957KiB/s-3366KiB/s (980kB/s-3446kB/s), io=16.0MiB (16.8MB), run=3651-4282msec WRITE: bw=7652KiB/s (7836kB/s), 1913KiB/s-3339KiB/s (1959kB/s-3419kB/s), io=32.0MiB (33.6MB), run=3680-4282msec