== sanity test 398b: DIO and buffer IO race ============== 10:34:00 (1784126040) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.78011 s, 18.1 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=153319: Wed Jul 15 10:35:11 2026 read: IOPS=24, BW=97.1KiB/s (99.4kB/s)(5992KiB/61706msec) clat (usec): min=37, max=172922, avg=21259.83, stdev=12724.65 lat (usec): min=37, max=172924, avg=21260.83, stdev=12724.71 clat percentiles (usec): | 1.00th=[ 101], 5.00th=[ 5538], 10.00th=[ 8717], 20.00th=[ 11863], | 30.00th=[ 14484], 40.00th=[ 16712], 50.00th=[ 19268], 60.00th=[ 21890], | 70.00th=[ 25822], 80.00th=[ 30016], 90.00th=[ 35914], 95.00th=[ 41157], | 99.00th=[ 64226], 99.50th=[ 72877], 99.90th=[ 95945], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 15, max= 167, per=24.81%, avg=96.28, stdev=29.32, samples=122 iops : min= 3, max= 41, avg=23.60, stdev= 7.39, samples=122 write: IOPS=25, BW=102KiB/s (104kB/s)(6296KiB/61706msec); 0 zone resets clat (usec): min=747, max=683986, avg=18837.36, stdev=22210.29 lat (usec): min=748, max=683987, avg=18843.33, stdev=22216.12 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 2573], 10.00th=[ 3621], 20.00th=[ 5800], | 30.00th=[ 8455], 40.00th=[ 11731], 50.00th=[ 15533], 60.00th=[ 19268], | 70.00th=[ 23462], 80.00th=[ 29492], 90.00th=[ 38011], 95.00th=[ 44303], | 99.00th=[ 61604], 99.50th=[ 74974], 99.90th=[152044], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 23, max= 240, per=24.85%, avg=100.89, stdev=33.49, samples=122 iops : min= 5, max= 60, avg=24.75, stdev= 8.45, samples=122 lat (usec) : 50=0.07%, 100=0.39%, 250=1.66%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.33% lat (msec) : 2=1.30%, 4=4.13%, 10=16.76%, 20=32.71%, 50=40.30% lat (msec) : 100=2.02%, 250=0.13%, 750=0.03% cpu : usr=0.09%, sys=28.78%, ctx=9681, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153320: Wed Jul 15 10:35:11 2026 read: IOPS=24, BW=96.7KiB/s (99.1kB/s)(5940KiB/61399msec) clat (usec): min=52, max=696298, avg=21723.20, stdev=21261.14 lat (usec): min=53, max=696299, avg=21724.27, stdev=21261.17 clat percentiles (usec): | 1.00th=[ 113], 5.00th=[ 7373], 10.00th=[ 9765], 20.00th=[ 12387], | 30.00th=[ 14615], 40.00th=[ 16712], 50.00th=[ 19006], 60.00th=[ 21627], | 70.00th=[ 25297], 80.00th=[ 29754], 90.00th=[ 35390], 95.00th=[ 42206], | 99.00th=[ 61604], 99.50th=[ 69731], 99.90th=[162530], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 23, max= 160, per=24.86%, avg=96.44, stdev=27.33, samples=122 iops : min= 5, max= 40, avg=23.63, stdev= 6.94, samples=122 write: IOPS=25, BW=103KiB/s (106kB/s)(6348KiB/61399msec); 0 zone resets clat (usec): min=729, max=145014, avg=18229.75, stdev=14286.31 lat (usec): min=730, max=145015, avg=18233.08, stdev=14285.78 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 2638], 10.00th=[ 3687], 20.00th=[ 5669], | 30.00th=[ 8356], 40.00th=[ 12125], 50.00th=[ 15270], 60.00th=[ 18744], | 70.00th=[ 22938], 80.00th=[ 28967], 90.00th=[ 36963], 95.00th=[ 44303], | 99.00th=[ 60031], 99.50th=[ 76022], 99.90th=[124257], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 31, max= 232, per=25.40%, avg=103.11, stdev=32.75, samples=122 iops : min= 7, max= 58, avg=25.30, stdev= 8.30, samples=122 lat (usec) : 100=0.39%, 250=1.20%, 500=0.20%, 750=0.03%, 1000=0.20% lat (msec) : 2=1.07%, 4=4.52%, 10=15.40%, 20=35.42%, 50=39.36% lat (msec) : 100=2.02%, 250=0.16%, 750=0.03% cpu : usr=0.12%, sys=28.88%, ctx=9738, 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=153321: Wed Jul 15 10:35:11 2026 read: IOPS=24, BW=97.9KiB/s (100kB/s)(6028KiB/61601msec) clat (usec): min=30, max=719325, avg=21516.91, stdev=21551.74 lat (usec): min=30, max=719327, avg=21518.93, stdev=21551.89 clat percentiles (usec): | 1.00th=[ 113], 5.00th=[ 6390], 10.00th=[ 8848], 20.00th=[ 11863], | 30.00th=[ 14222], 40.00th=[ 16712], 50.00th=[ 19268], 60.00th=[ 21890], | 70.00th=[ 25560], 80.00th=[ 30016], 90.00th=[ 35914], 95.00th=[ 40633], | 99.00th=[ 55313], 99.50th=[ 63177], 99.90th=[122160], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 15, max= 192, per=25.14%, avg=97.55, stdev=30.03, samples=122 iops : min= 3, max= 48, avg=23.91, stdev= 7.62, samples=122 write: IOPS=25, BW=102KiB/s (104kB/s)(6260KiB/61601msec); 0 zone resets clat (usec): min=750, max=237764, avg=18517.52, stdev=15448.35 lat (usec): min=751, max=237765, avg=18518.86, stdev=15448.37 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 2835], 10.00th=[ 3556], 20.00th=[ 5473], | 30.00th=[ 7898], 40.00th=[ 11731], 50.00th=[ 15664], 60.00th=[ 19530], | 70.00th=[ 23462], 80.00th=[ 29230], 90.00th=[ 36963], 95.00th=[ 44303], | 99.00th=[ 66323], 99.50th=[ 76022], 99.90th=[135267], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 39, max= 216, per=25.08%, avg=101.81, stdev=30.80, samples=121 iops : min= 9, max= 54, avg=24.98, stdev= 7.81, samples=121 lat (usec) : 50=0.10%, 100=0.36%, 250=1.43%, 500=0.16%, 1000=0.16% lat (msec) : 2=0.98%, 4=5.01%, 10=16.73%, 20=32.49%, 50=40.30% lat (msec) : 100=2.05%, 250=0.20%, 750=0.03% cpu : usr=0.13%, sys=28.82%, ctx=9663, 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=153322: Wed Jul 15 10:35:11 2026 read: IOPS=24, BW=97.0KiB/s (100kB/s)(6052KiB/61785msec) clat (usec): min=42, max=166599, avg=20915.61, stdev=11851.49 lat (usec): min=43, max=166600, avg=20916.67, stdev=11851.58 clat percentiles (usec): | 1.00th=[ 111], 5.00th=[ 6259], 10.00th=[ 8848], 20.00th=[ 11731], | 30.00th=[ 14353], 40.00th=[ 16581], 50.00th=[ 19268], 60.00th=[ 22152], | 70.00th=[ 25822], 80.00th=[ 29230], 90.00th=[ 34866], 95.00th=[ 39584], | 99.00th=[ 56361], 99.50th=[ 62129], 99.90th=[ 91751], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 15, max= 192, per=24.93%, avg=96.73, stdev=31.75, samples=122 iops : min= 3, max= 48, avg=23.71, stdev= 8.02, samples=122 write: IOPS=25, BW=101KiB/s (103kB/s)(6236KiB/61785msec); 0 zone resets clat (usec): min=776, max=696730, avg=19199.33, stdev=22962.41 lat (usec): min=778, max=696732, avg=19204.08, stdev=22961.78 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 2638], 10.00th=[ 3589], 20.00th=[ 5604], | 30.00th=[ 8455], 40.00th=[ 12256], 50.00th=[ 16057], 60.00th=[ 19268], | 70.00th=[ 23462], 80.00th=[ 29230], 90.00th=[ 38536], 95.00th=[ 45351], | 99.00th=[ 68682], 99.50th=[ 79168], 99.90th=[156238], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 15, max= 224, per=24.61%, avg=99.93, stdev=32.12, samples=122 iops : min= 3, max= 56, avg=24.51, stdev= 8.09, samples=122 lat (usec) : 50=0.07%, 100=0.23%, 250=1.53%, 500=0.20%, 1000=0.23% lat (msec) : 2=1.24%, 4=4.17%, 10=16.08%, 20=33.72%, 50=40.10% lat (msec) : 100=2.21%, 250=0.20%, 750=0.03% cpu : usr=0.12%, sys=28.82%, ctx=9560, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=389KiB/s (398kB/s), 96.7KiB/s-97.0KiB/s (99.1kB/s-100kB/s), io=23.4MiB (24.6MB), run=61399-61785msec WRITE: bw=407KiB/s (417kB/s), 101KiB/s-103KiB/s (103kB/s-106kB/s), io=24.6MiB (25.7MB), run=61399-61785msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153324: Wed Jul 15 10:35:35 2026 read: IOPS=17, BW=70.9KiB/s (72.6kB/s)(5992KiB/84558msec) clat (msec): min=2, max=714, avg=17.69, stdev=25.21 lat (msec): min=2, max=714, avg=17.69, stdev=25.21 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 12], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 26], 90.00th=[ 37], 95.00th=[ 55], | 99.00th=[ 93], 99.50th=[ 108], 99.90th=[ 180], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 15, max= 240, per=25.55%, avg=71.79, stdev=43.72, samples=166 iops : min= 3, max= 60, avg=17.64, stdev=11.07, samples=166 write: IOPS=18, BW=74.5KiB/s (76.2kB/s)(6296KiB/84558msec); 0 zone resets clat (msec): min=13, max=257, avg=36.83, stdev=19.31 lat (msec): min=13, max=257, avg=36.83, stdev=19.31 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 51], 90.00th=[ 63], 95.00th=[ 74], | 99.00th=[ 96], 99.50th=[ 104], 99.90th=[ 157], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 16, max= 168, per=25.46%, avg=74.84, stdev=40.17, samples=167 iops : min= 4, max= 42, avg=18.41, stdev=10.21, samples=167 lat (msec) : 4=3.84%, 10=18.75%, 20=19.92%, 50=43.95%, 100=12.92% lat (msec) : 250=0.55%, 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=10.68%, ctx=6365, 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=153325: Wed Jul 15 10:35:35 2026 read: IOPS=17, BW=69.7KiB/s (71.3kB/s)(5940KiB/85263msec) clat (msec): min=2, max=687, avg=17.93, stdev=24.44 lat (msec): min=2, max=687, avg=17.93, stdev=24.44 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 12], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 28], 90.00th=[ 40], 95.00th=[ 53], | 99.00th=[ 87], 99.50th=[ 97], 99.90th=[ 157], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 5, max= 224, per=24.65%, avg=69.25, stdev=43.43, samples=169 iops : min= 1, max= 56, avg=17.01, stdev=11.00, samples=169 write: IOPS=18, BW=74.5KiB/s (76.2kB/s)(6348KiB/85263msec); 0 zone resets clat (msec): min=10, max=220, avg=36.89, stdev=19.85 lat (msec): min=10, max=220, avg=36.90, stdev=19.85 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 43], 80.00th=[ 52], 90.00th=[ 63], 95.00th=[ 75], | 99.00th=[ 102], 99.50th=[ 123], 99.90th=[ 176], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 23, max= 183, per=25.26%, avg=74.25, stdev=39.74, samples=168 iops : min= 5, max= 45, avg=18.26, stdev=10.09, samples=168 lat (msec) : 4=3.87%, 10=18.59%, 20=19.11%, 50=45.05%, 100=12.63% lat (msec) : 250=0.72%, 750=0.03% cpu : usr=0.09%, sys=10.48%, ctx=6416, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153326: Wed Jul 15 10:35:35 2026 read: IOPS=17, BW=70.8KiB/s (72.5kB/s)(6028KiB/85113msec) clat (msec): min=2, max=240, avg=17.79, stdev=17.65 lat (msec): min=2, max=240, avg=17.79, stdev=17.65 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 28], 90.00th=[ 40], 95.00th=[ 52], | 99.00th=[ 83], 99.50th=[ 101], 99.90th=[ 121], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 8, max= 200, per=25.29%, avg=71.06, stdev=41.63, samples=168 iops : min= 2, max= 50, avg=17.46, stdev=10.54, samples=168 write: IOPS=18, BW=73.5KiB/s (75.3kB/s)(6260KiB/85113msec); 0 zone resets clat (msec): min=13, max=718, avg=37.22, stdev=25.67 lat (msec): min=13, max=718, avg=37.22, stdev=25.67 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 51], 90.00th=[ 62], 95.00th=[ 77], | 99.00th=[ 100], 99.50th=[ 120], 99.90th=[ 190], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 15, max= 176, per=25.08%, avg=73.73, stdev=39.91, samples=168 iops : min= 3, max= 44, avg=18.12, stdev=10.16, samples=168 lat (msec) : 4=3.94%, 10=17.97%, 20=18.85%, 50=46.13%, 100=12.40% lat (msec) : 250=0.68%, 750=0.03% cpu : usr=0.09%, sys=10.57%, ctx=6401, 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=153327: Wed Jul 15 10:35:35 2026 read: IOPS=17, BW=71.5KiB/s (73.2kB/s)(6052KiB/84670msec) clat (msec): min=2, max=165, avg=17.29, stdev=16.61 lat (msec): min=2, max=165, avg=17.29, stdev=16.61 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 6], 40.00th=[ 8], 50.00th=[ 12], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 39], 95.00th=[ 52], | 99.00th=[ 77], 99.50th=[ 91], 99.90th=[ 140], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 8, max= 216, per=25.56%, avg=71.83, stdev=45.03, samples=167 iops : min= 2, max= 54, avg=17.65, stdev=11.41, samples=167 write: IOPS=18, BW=73.7KiB/s (75.4kB/s)(6236KiB/84670msec); 0 zone resets clat (msec): min=12, max=723, avg=37.49, stdev=26.39 lat (msec): min=12, max=723, avg=37.49, stdev=26.39 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 43], 80.00th=[ 50], 90.00th=[ 63], 95.00th=[ 74], | 99.00th=[ 99], 99.50th=[ 128], 99.90th=[ 257], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 24, max= 168, per=25.15%, avg=73.94, stdev=38.53, samples=167 iops : min= 6, max= 42, avg=18.18, stdev= 9.80, samples=167 lat (msec) : 4=4.13%, 10=18.16%, 20=18.55%, 50=46.58%, 100=11.98% lat (msec) : 250=0.52%, 500=0.03%, 750=0.03% cpu : usr=0.10%, sys=10.64%, ctx=6437, 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=282KiB/s (288kB/s), 69.7KiB/s-71.5KiB/s (71.3kB/s-73.2kB/s), io=23.4MiB (24.6MB), run=84558-85263msec WRITE: bw=295KiB/s (302kB/s), 73.5KiB/s-74.5KiB/s (75.3kB/s-76.2kB/s), io=24.6MiB (25.7MB), run=84558-85263msec 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=153358: Wed Jul 15 10:35:53 2026 read: IOPS=27, BW=442KiB/s (453kB/s)(5920KiB/13394msec) clat (usec): min=57, max=79664, avg=17415.96, stdev=10934.40 lat (usec): min=58, max=79665, avg=17416.73, stdev=10934.37 clat percentiles (usec): | 1.00th=[ 91], 5.00th=[ 133], 10.00th=[ 5473], 20.00th=[ 9896], | 30.00th=[12256], 40.00th=[14353], 50.00th=[16188], 60.00th=[18482], | 70.00th=[20841], 80.00th=[23725], 90.00th=[28967], 95.00th=[36439], | 99.00th=[55313], 99.50th=[66847], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 255, max= 733, per=24.79%, avg=435.88, stdev=124.78, samples=26 iops : min= 15, max= 45, avg=26.65, stdev= 7.74, samples=26 write: IOPS=29, BW=475KiB/s (487kB/s)(6368KiB/13394msec); 0 zone resets clat (usec): min=1610, max=63326, avg=17398.63, stdev=12040.93 lat (usec): min=1611, max=63328, avg=17400.28, stdev=12041.03 clat percentiles (usec): | 1.00th=[ 3261], 5.00th=[ 3851], 10.00th=[ 4621], 20.00th=[ 6325], | 30.00th=[ 8979], 40.00th=[11731], 50.00th=[14091], 60.00th=[17957], | 70.00th=[21627], 80.00th=[27395], 90.00th=[35914], 95.00th=[42206], | 99.00th=[54789], 99.50th=[57934], 99.90th=[63177], 99.95th=[63177], | 99.99th=[63177] bw ( KiB/s): min= 254, max= 704, per=25.61%, avg=473.73, stdev=115.98, samples=26 iops : min= 15, max= 44, avg=29.04, stdev= 7.32, samples=26 lat (usec) : 100=1.04%, 250=3.12%, 500=0.52% lat (msec) : 2=0.13%, 4=2.99%, 10=19.40%, 20=38.28%, 50=32.81% lat (msec) : 100=1.69% cpu : usr=0.07%, sys=30.50%, ctx=2750, 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=153359: Wed Jul 15 10:35:53 2026 read: IOPS=26, BW=422KiB/s (432kB/s)(5744KiB/13619msec) clat (usec): min=75, max=73348, avg=19238.85, stdev=11628.22 lat (usec): min=75, max=73348, avg=19239.55, stdev=11628.27 clat percentiles (usec): | 1.00th=[ 93], 5.00th=[ 133], 10.00th=[ 7504], 20.00th=[11076], | 30.00th=[12780], 40.00th=[15139], 50.00th=[17433], 60.00th=[20317], | 70.00th=[22938], 80.00th=[26346], 90.00th=[35390], 95.00th=[39584], | 99.00th=[57410], 99.50th=[64750], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 191, max= 638, per=23.54%, avg=413.85, stdev=104.98, samples=26 iops : min= 11, max= 39, avg=25.27, stdev= 6.58, samples=26 write: IOPS=30, BW=481KiB/s (492kB/s)(6544KiB/13619msec); 0 zone resets clat (usec): min=1052, max=72299, avg=16253.63, stdev=12000.99 lat (usec): min=1052, max=72323, avg=16255.18, stdev=12001.43 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 4015], 10.00th=[ 4752], 20.00th=[ 6063], | 30.00th=[ 8029], 40.00th=[10028], 50.00th=[12780], 60.00th=[15795], | 70.00th=[20055], 80.00th=[25560], 90.00th=[32900], 95.00th=[41157], | 99.00th=[56361], 99.50th=[61604], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 287, max= 692, per=25.04%, avg=463.31, stdev=109.98, samples=26 iops : min= 17, max= 43, avg=28.38, stdev= 6.92, samples=26 lat (usec) : 100=0.65%, 250=2.73%, 500=0.13% lat (msec) : 2=0.78%, 4=1.82%, 10=22.27%, 20=36.46%, 50=33.20% lat (msec) : 100=1.95% cpu : usr=0.14%, sys=30.33%, ctx=2828, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153360: Wed Jul 15 10:35:53 2026 read: IOPS=29, BW=469KiB/s (480kB/s)(6256KiB/13353msec) clat (usec): min=53, max=84558, avg=18266.53, stdev=11189.97 lat (usec): min=53, max=84560, avg=18268.02, stdev=11189.29 clat percentiles (usec): | 1.00th=[ 90], 5.00th=[ 121], 10.00th=[ 6194], 20.00th=[10945], | 30.00th=[13042], 40.00th=[15270], 50.00th=[17171], 60.00th=[19268], | 70.00th=[21890], 80.00th=[24249], 90.00th=[30802], 95.00th=[39060], | 99.00th=[60556], 99.50th=[67634], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 287, max= 669, per=26.66%, avg=468.62, stdev=106.66, samples=26 iops : min= 17, max= 41, avg=28.69, stdev= 6.63, samples=26 write: IOPS=28, BW=452KiB/s (463kB/s)(6032KiB/13353msec); 0 zone resets clat (usec): min=1617, max=72109, avg=16352.67, stdev=12188.96 lat (usec): min=1618, max=72111, avg=16354.15, stdev=12189.09 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 3621], 10.00th=[ 4490], 20.00th=[ 6194], | 30.00th=[ 7963], 40.00th=[10028], 50.00th=[12780], 60.00th=[16188], | 70.00th=[19792], 80.00th=[25822], 90.00th=[33817], 95.00th=[41681], | 99.00th=[57410], 99.50th=[64226], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 190, max= 736, per=24.10%, avg=445.77, stdev=158.33, samples=26 iops : min= 11, max= 46, avg=27.27, stdev= 9.99, samples=26 lat (usec) : 100=0.65%, 250=4.30%, 500=0.13% lat (msec) : 2=0.65%, 4=2.47%, 10=19.92%, 20=38.93%, 50=31.51% lat (msec) : 100=1.43% cpu : usr=0.17%, sys=30.35%, ctx=2628, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153361: Wed Jul 15 10:35:53 2026 read: IOPS=28, BW=456KiB/s (467kB/s)(6032KiB/13219msec) clat (usec): min=64, max=60375, avg=18206.94, stdev=11363.41 lat (usec): min=65, max=60375, avg=18207.65, stdev=11363.42 clat percentiles (usec): | 1.00th=[ 90], 5.00th=[ 125], 10.00th=[ 198], 20.00th=[ 9896], | 30.00th=[12518], 40.00th=[15139], 50.00th=[17433], 60.00th=[19792], | 70.00th=[22152], 80.00th=[25822], 90.00th=[33424], 95.00th=[38536], | 99.00th=[55837], 99.50th=[57410], 99.90th=[60556], 99.95th=[60556], | 99.99th=[60556] bw ( KiB/s): min= 192, max= 702, per=25.75%, avg=452.65, stdev=101.76, samples=26 iops : min= 12, max= 43, avg=27.69, stdev= 6.22, samples=26 write: IOPS=29, BW=473KiB/s (485kB/s)(6256KiB/13219msec); 0 zone resets clat (usec): min=1305, max=64364, avg=16154.41, stdev=11816.03 lat (usec): min=1306, max=64364, avg=16155.93, stdev=11816.15 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 3720], 10.00th=[ 4555], 20.00th=[ 5669], | 30.00th=[ 8225], 40.00th=[10814], 50.00th=[13698], 60.00th=[16319], | 70.00th=[19530], 80.00th=[24249], 90.00th=[31065], 95.00th=[39060], | 99.00th=[58459], 99.50th=[62129], 99.90th=[64226], 99.95th=[64226], | 99.99th=[64226] bw ( KiB/s): min= 255, max= 670, per=25.57%, avg=473.04, stdev=109.76, samples=26 iops : min= 15, max= 41, avg=29.00, stdev= 6.89, samples=26 lat (usec) : 100=1.04%, 250=4.43%, 500=0.39% lat (msec) : 2=0.91%, 4=2.21%, 10=19.66%, 20=38.02%, 50=31.12% lat (msec) : 100=2.21% cpu : usr=0.10%, sys=31.31%, ctx=2689, 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=1759KiB/s (1801kB/s), 422KiB/s-469KiB/s (432kB/s-480kB/s), io=23.4MiB (24.5MB), run=13219-13619msec WRITE: bw=1850KiB/s (1895kB/s), 452KiB/s-481KiB/s (463kB/s-492kB/s), io=24.6MiB (25.8MB), run=13219-13619msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153363: Wed Jul 15 10:35:59 2026 read: IOPS=18, BW=304KiB/s (311kB/s)(5920KiB/19478msec) clat (usec): min=3079, max=87168, avg=16651.31, stdev=14103.29 lat (usec): min=3079, max=87168, avg=16652.21, stdev=14103.27 clat percentiles (usec): | 1.00th=[ 3720], 5.00th=[ 4424], 10.00th=[ 5080], 20.00th=[ 6718], | 30.00th=[ 8455], 40.00th=[10290], 50.00th=[11600], 60.00th=[13566], | 70.00th=[16712], 80.00th=[23200], 90.00th=[36963], 95.00th=[44827], | 99.00th=[67634], 99.50th=[83362], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 95, max= 768, per=24.56%, avg=299.92, stdev=150.79, samples=38 iops : min= 5, max= 48, avg=18.34, stdev= 9.60, samples=38 write: IOPS=20, BW=327KiB/s (335kB/s)(6368KiB/19478msec); 0 zone resets clat (msec): min=13, max=148, avg=33.25, stdev=17.19 lat (msec): min=13, max=148, avg=33.25, stdev=17.19 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 21], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 28], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 43], 90.00th=[ 55], 95.00th=[ 67], | 99.00th=[ 96], 99.50th=[ 111], 99.90th=[ 148], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 128, max= 704, per=25.40%, avg=326.45, stdev=156.61, samples=38 iops : min= 8, max= 44, avg=20.03, stdev=10.02, samples=38 lat (msec) : 4=1.30%, 10=17.19%, 20=26.69%, 50=45.18%, 100=9.38% lat (msec) : 250=0.26% cpu : usr=0.08%, sys=11.81%, ctx=1740, 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=153364: Wed Jul 15 10:35:59 2026 read: IOPS=18, BW=293KiB/s (300kB/s)(5744KiB/19607msec) clat (usec): min=2778, max=92866, avg=14830.50, stdev=14103.90 lat (usec): min=2779, max=92867, avg=14831.46, stdev=14103.98 clat percentiles (usec): | 1.00th=[ 3326], 5.00th=[ 4080], 10.00th=[ 4555], 20.00th=[ 5407], | 30.00th=[ 6587], 40.00th=[ 8160], 50.00th=[10290], 60.00th=[12125], | 70.00th=[14746], 80.00th=[20055], 90.00th=[32375], 95.00th=[45876], | 99.00th=[76022], 99.50th=[90702], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 52, max= 736, per=24.06%, avg=293.79, stdev=173.40, samples=38 iops : min= 3, max= 46, avg=17.97, stdev=11.01, samples=38 write: IOPS=20, BW=334KiB/s (342kB/s)(6544KiB/19607msec); 0 zone resets clat (msec): min=12, max=152, avg=34.70, stdev=18.69 lat (msec): min=12, max=152, avg=34.70, stdev=18.69 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 29], 60.00th=[ 32], | 70.00th=[ 38], 80.00th=[ 46], 90.00th=[ 61], 95.00th=[ 73], | 99.00th=[ 101], 99.50th=[ 104], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 160, max= 608, per=25.48%, avg=327.47, stdev=145.00, samples=38 iops : min= 10, max= 38, avg=20.08, stdev= 9.28, samples=38 lat (msec) : 4=2.08%, 10=20.83%, 20=22.66%, 50=44.27%, 100=9.51% lat (msec) : 250=0.65% cpu : usr=0.05%, sys=11.47%, ctx=1709, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153365: Wed Jul 15 10:35:59 2026 read: IOPS=20, BW=321KiB/s (329kB/s)(6256KiB/19494msec) clat (usec): min=3272, max=99058, avg=16386.55, stdev=15129.26 lat (usec): min=3272, max=99059, avg=16387.45, stdev=15129.28 clat percentiles (usec): | 1.00th=[ 3523], 5.00th=[ 4293], 10.00th=[ 5145], 20.00th=[ 6194], | 30.00th=[ 7963], 40.00th=[ 9896], 50.00th=[11076], 60.00th=[13173], | 70.00th=[17171], 80.00th=[22676], 90.00th=[33162], 95.00th=[45876], | 99.00th=[84411], 99.50th=[98042], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 95, max= 864, per=26.38%, avg=322.11, stdev=181.84, samples=38 iops : min= 5, max= 54, avg=19.74, stdev=11.56, samples=38 write: IOPS=19, BW=309KiB/s (317kB/s)(6032KiB/19494msec); 0 zone resets clat (msec): min=13, max=149, avg=34.45, stdev=17.42 lat (msec): min=13, max=149, avg=34.45, stdev=17.42 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 38], 80.00th=[ 47], 90.00th=[ 56], 95.00th=[ 65], | 99.00th=[ 105], 99.50th=[ 113], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 64, max= 608, per=23.81%, avg=305.89, stdev=140.35, samples=38 iops : min= 4, max= 38, avg=18.74, stdev= 8.96, samples=38 lat (msec) : 4=1.43%, 10=19.92%, 20=23.18%, 50=46.09%, 100=8.85% lat (msec) : 250=0.52% cpu : usr=0.08%, sys=11.79%, ctx=1722, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153366: Wed Jul 15 10:35:59 2026 read: IOPS=19, BW=309KiB/s (316kB/s)(6032KiB/19518msec) clat (usec): min=2988, max=89236, avg=17219.99, stdev=14935.89 lat (usec): min=2989, max=89237, avg=17220.85, stdev=14935.93 clat percentiles (usec): | 1.00th=[ 3163], 5.00th=[ 4178], 10.00th=[ 4883], 20.00th=[ 5932], | 30.00th=[ 7767], 40.00th=[ 9896], 50.00th=[11731], 60.00th=[14615], | 70.00th=[18220], 80.00th=[25297], 90.00th=[37487], 95.00th=[49021], | 99.00th=[66847], 99.50th=[84411], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 127, max= 672, per=25.09%, avg=306.37, stdev=143.52, samples=38 iops : min= 7, max= 42, avg=18.76, stdev= 9.10, samples=38 write: IOPS=20, BW=321KiB/s (328kB/s)(6256KiB/19518msec); 0 zone resets clat (msec): min=14, max=151, avg=33.12, stdev=16.50 lat (msec): min=14, max=151, avg=33.12, stdev=16.50 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 26], 50.00th=[ 29], 60.00th=[ 32], | 70.00th=[ 36], 80.00th=[ 43], 90.00th=[ 53], 95.00th=[ 67], | 99.00th=[ 101], 99.50th=[ 113], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 96, max= 704, per=24.82%, avg=318.97, stdev=155.21, samples=38 iops : min= 6, max= 44, avg=19.55, stdev= 9.92, samples=38 lat (msec) : 4=1.82%, 10=18.10%, 20=22.92%, 50=48.57%, 100=8.07% lat (msec) : 250=0.52% cpu : usr=0.07%, sys=11.77%, ctx=1756, 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=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=1222KiB/s (1251kB/s), 293KiB/s-321KiB/s (300kB/s-329kB/s), io=23.4MiB (24.5MB), run=19478-19607msec WRITE: bw=1285KiB/s (1316kB/s), 309KiB/s-334KiB/s (317kB/s-342kB/s), io=24.6MiB (25.8MB), run=19478-19607msec 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=153374: Wed Jul 15 10:36:08 2026 read: IOPS=3, BW=3500KiB/s (3584kB/s)(7168KiB/2048msec) clat (msec): min=45, max=194, avg=130.06, stdev=61.13 lat (msec): min=45, max=194, avg=130.06, stdev=61.13 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 46], 10.00th=[ 46], 20.00th=[ 57], | 30.00th=[ 111], 40.00th=[ 111], 50.00th=[ 138], 60.00th=[ 180], | 70.00th=[ 180], 80.00th=[ 184], 90.00th=[ 194], 95.00th=[ 194], | 99.00th=[ 194], 99.50th=[ 194], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 2048, max= 5154, per=55.85%, avg=3752.33, stdev=1574.96, samples=3 iops : min= 2, max= 5, avg= 3.33, stdev= 1.53, samples=3 write: IOPS=2, BW=2500KiB/s (2560kB/s)(5120KiB/2048msec); 0 zone resets clat (msec): min=92, max=458, avg=219.47, stdev=143.37 lat (msec): min=92, max=458, avg=219.53, stdev=143.37 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 92], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 188], 60.00th=[ 188], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 1718, max= 4096, per=27.79%, avg=2613.67, stdev=1293.00, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 50=8.33%, 100=16.67%, 250=66.67%, 500=8.33% cpu : usr=0.00%, sys=13.63%, ctx=98, 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=153375: Wed Jul 15 10:36:08 2026 read: IOPS=0, BW=672KiB/s (688kB/s)(2048KiB/3048msec) clat (msec): min=48, max=495, avg=272.16, stdev=316.33 lat (msec): min=48, max=495, avg=272.16, stdev=316.33 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 49], 10.00th=[ 49], 20.00th=[ 49], | 30.00th=[ 49], 40.00th=[ 49], 50.00th=[ 49], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 1715, max= 2027, per=27.85%, avg=1871.00, stdev=220.62, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3360KiB/s (3440kB/s)(10.0MiB/3048msec); 0 zone resets clat (msec): min=39, max=685, avg=248.37, stdev=242.55 lat (msec): min=39, max=685, avg=248.44, stdev=242.55 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 40], 10.00th=[ 40], 20.00th=[ 65], | 30.00th=[ 69], 40.00th=[ 71], 50.00th=[ 96], 60.00th=[ 190], | 70.00th=[ 300], 80.00th=[ 317], 90.00th=[ 651], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1715, max= 4096, per=34.96%, avg=3288.67, stdev=1362.99, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 lat (msec) : 50=16.67%, 100=33.33%, 250=8.33%, 500=25.00%, 750=16.67% cpu : usr=0.03%, sys=13.32%, ctx=163, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153376: Wed Jul 15 10:36:08 2026 read: IOPS=2, BW=2203KiB/s (2256kB/s)(6144KiB/2789msec) clat (msec): min=74, max=342, avg=188.97, stdev=117.35 lat (msec): min=74, max=342, avg=188.97, stdev=117.35 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 79], | 30.00th=[ 79], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 178], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 2027, max= 4096, per=40.54%, avg=2723.67, stdev=1188.52, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 write: IOPS=2, BW=2203KiB/s (2256kB/s)(6144KiB/2789msec); 0 zone resets clat (msec): min=94, max=696, avg=266.98, stdev=219.09 lat (msec): min=94, max=696, avg=267.04, stdev=219.09 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 188], 50.00th=[ 188], 60.00th=[ 232], | 70.00th=[ 257], 80.00th=[ 257], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 2027, max= 3442, per=25.37%, avg=2386.00, stdev=704.07, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=25.00%, 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.04%, sys=12.20%, ctx=468, 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=153377: Wed Jul 15 10:36:08 2026 read: IOPS=2, BW=2127KiB/s (2178kB/s)(5120KiB/2407msec) clat (msec): min=63, max=373, avg=148.18, stdev=128.25 lat (msec): min=63, max=373, avg=148.18, stdev=128.25 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 64], | 30.00th=[ 82], 40.00th=[ 82], 50.00th=[ 96], 60.00th=[ 96], | 70.00th=[ 127], 80.00th=[ 127], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 4055, max= 4096, per=60.66%, avg=4075.50, stdev=28.99, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2978KiB/s (3049kB/s)(7168KiB/2407msec); 0 zone resets clat (msec): min=69, max=466, avg=231.11, stdev=145.26 lat (msec): min=69, max=466, avg=231.17, stdev=145.26 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 114], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 207], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 372], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 1718, max= 4055, per=27.72%, avg=2607.00, stdev=1264.81, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=33.33%, 250=33.33%, 500=33.33% cpu : usr=0.00%, sys=17.83%, ctx=282, 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=6719KiB/s (6880kB/s), 672KiB/s-3500KiB/s (688kB/s-3584kB/s), io=20.0MiB (20.0MB), run=2048-3048msec WRITE: bw=9407KiB/s (9633kB/s), 2203KiB/s-3360KiB/s (2256kB/s-3440kB/s), io=28.0MiB (29.4MB), run=2048-3048msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153379: Wed Jul 15 10:36:08 2026 read: IOPS=2, BW=3039KiB/s (3112kB/s)(7168KiB/2359msec) clat (msec): min=90, max=325, avg=175.89, stdev=82.55 lat (msec): min=90, max=325, avg=175.89, stdev=82.55 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 106], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 159], 60.00th=[ 171], | 70.00th=[ 171], 80.00th=[ 243], 90.00th=[ 326], 95.00th=[ 326], | 99.00th=[ 326], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 1973, max= 4946, per=39.57%, avg=2744.50, stdev=1467.99, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=2, BW=2170KiB/s (2223kB/s)(5120KiB/2359msec); 0 zone resets clat (msec): min=156, max=243, avg=207.67, stdev=38.79 lat (msec): min=156, max=243, avg=207.74, stdev=38.78 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 218], 60.00th=[ 218], | 70.00th=[ 243], 80.00th=[ 243], 90.00th=[ 243], 95.00th=[ 243], | 99.00th=[ 243], 99.50th=[ 243], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 1973, max= 4023, per=27.62%, avg=2681.33, stdev=1162.52, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=8.33%, 250=83.33%, 500=8.33% cpu : usr=0.00%, sys=45.67%, ctx=1422, 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=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=153380: Wed Jul 15 10:36:08 2026 read: IOPS=0, BW=694KiB/s (710kB/s)(2048KiB/2953msec) clat (msec): min=32, max=115, avg=73.71, stdev=58.67 lat (msec): min=32, max=115, avg=73.71, stdev=58.67 clat percentiles (msec): | 1.00th=[ 33], 5.00th=[ 33], 10.00th=[ 33], 20.00th=[ 33], | 30.00th=[ 33], 40.00th=[ 33], 50.00th=[ 33], 60.00th=[ 115], | 70.00th=[ 115], 80.00th=[ 115], 90.00th=[ 115], 95.00th=[ 115], | 99.00th=[ 115], 99.50th=[ 115], 99.90th=[ 115], 99.95th=[ 115], | 99.99th=[ 115] bw ( KiB/s): min= 1648, max= 1973, per=26.11%, avg=1810.50, stdev=229.81, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3468KiB/s (3551kB/s)(10.0MiB/2953msec); 0 zone resets clat (msec): min=97, max=640, avg=279.43, stdev=189.48 lat (msec): min=98, max=640, avg=279.47, stdev=189.47 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 115], | 30.00th=[ 128], 40.00th=[ 142], 50.00th=[ 180], 60.00th=[ 209], | 70.00th=[ 359], 80.00th=[ 422], 90.00th=[ 502], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1648, max= 6059, per=32.52%, avg=3157.40, stdev=1890.47, samples=5 iops : min= 1, max= 5, avg= 2.40, stdev= 1.95, samples=5 lat (msec) : 50=8.33%, 100=8.33%, 250=50.00%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=36.75%, ctx=333, 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=153381: Wed Jul 15 10:36:08 2026 read: IOPS=2, BW=2837KiB/s (2905kB/s)(6144KiB/2166msec) clat (usec): min=407, max=197262, avg=87741.56, stdev=91357.97 lat (usec): min=408, max=197262, avg=87742.47, stdev=91357.59 clat percentiles (usec): | 1.00th=[ 408], 5.00th=[ 408], 10.00th=[ 408], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[ 21103], 50.00th=[ 21103], 60.00th=[127402], | 70.00th=[179307], 80.00th=[179307], 90.00th=[198181], 95.00th=[198181], | 99.00th=[198181], 99.50th=[198181], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 1973, max= 8047, per=72.24%, avg=5010.00, stdev=4294.97, samples=2 iops : min= 1, max= 7, avg= 4.00, stdev= 4.24, samples=2 write: IOPS=2, BW=2837KiB/s (2905kB/s)(6144KiB/2166msec); 0 zone resets clat (msec): min=82, max=529, avg=261.03, stdev=148.78 lat (msec): min=82, max=529, avg=261.08, stdev=148.79 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 251], 50.00th=[ 251], 60.00th=[ 255], | 70.00th=[ 268], 80.00th=[ 268], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 3308, max= 4023, per=38.72%, avg=3759.00, stdev=392.47, samples=3 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=41.02%, ctx=576, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153382: Wed Jul 15 10:36:08 2026 read: IOPS=1, BW=1835KiB/s (1879kB/s)(5120KiB/2790msec) clat (usec): min=455, max=253359, avg=154333.25, stdev=102625.65 lat (usec): min=457, max=253360, avg=154334.12, stdev=102625.40 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 457], 10.00th=[ 457], 20.00th=[ 457], | 30.00th=[126354], 40.00th=[126354], 50.00th=[147850], 60.00th=[147850], | 70.00th=[242222], 80.00th=[242222], 90.00th=[252707], 95.00th=[252707], | 99.00th=[252707], 99.50th=[252707], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 3946, max= 4039, per=57.57%, avg=3992.50, stdev=65.76, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2569KiB/s (2631kB/s)(7168KiB/2790msec); 0 zone resets clat (msec): min=136, max=500, avg=277.10, stdev=142.31 lat (msec): min=136, max=500, avg=277.15, stdev=142.31 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 159], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 211], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 409], 90.00th=[ 502], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 1659, max= 4039, per=30.30%, avg=2942.25, stdev=1267.19, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=58.33%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=40.37%, ctx=671, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6935KiB/s (7102kB/s), 694KiB/s-3039KiB/s (710kB/s-3112kB/s), io=20.0MiB (20.0MB), run=2166-2953msec WRITE: bw=9709KiB/s (9942kB/s), 2170KiB/s-3468KiB/s (2223kB/s-3551kB/s), io=28.0MiB (29.4MB), run=2166-2953msec 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=153388: Wed Jul 15 10:36:15 2026 read: IOPS=3, BW=12.5MiB/s (13.1MB/s)(12.0MiB/959msec) clat (msec): min=122, max=588, avg=305.61, stdev=248.22 lat (msec): min=122, max=588, avg=305.61, stdev=248.22 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 124], | 30.00th=[ 124], 40.00th=[ 207], 50.00th=[ 207], 60.00th=[ 207], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min=14921, max=14921, per=100.00%, avg=14921.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 750=33.33% cpu : usr=0.00%, sys=23.49%, ctx=73, 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=153389: Wed Jul 15 10:36:15 2026 read: IOPS=0, BW=2390KiB/s (2447kB/s)(4096KiB/1714msec) clat (nsec): min=482950k, max=482950k, avg=482950283.00, stdev= 0.00 lat (nsec): min=482953k, max=482953k, avg=482952538.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 485], 50.00th=[ 485], 60.00th=[ 485], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 7937, max= 7937, per=83.04%, avg=7937.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4779KiB/s (4894kB/s)(8192KiB/1714msec); 0 zone resets clat (msec): min=228, max=981, avg=605.20, stdev=532.52 lat (msec): min=228, max=981, avg=605.48, stdev=532.46 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 986], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 8192, max= 8192, per=43.18%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=15.18%, 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=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=153390: Wed Jul 15 10:36:15 2026 write: IOPS=1, BW=7115KiB/s (7286kB/s)(12.0MiB/1727msec); 0 zone resets clat (msec): min=218, max=1158, avg=564.33, stdev=517.24 lat (msec): min=218, max=1159, avg=564.64, stdev=517.32 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 220], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min=16384, max=16384, per=86.35%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=18.13%, ctx=88, 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=153391: Wed Jul 15 10:36:15 2026 write: IOPS=2, BW=8504KiB/s (8708kB/s)(12.0MiB/1445msec); 0 zone resets clat (msec): min=327, max=700, avg=473.37, stdev=199.14 lat (msec): min=327, max=700, avg=473.60, stdev=199.16 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min=10981, max=10981, per=57.88%, avg=10981.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=17.66%, ctx=52, 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=9559KiB/s (9788kB/s), 2390KiB/s-12.5MiB/s (2447kB/s-13.1MB/s), io=16.0MiB (16.8MB), run=959-1714msec WRITE: bw=18.5MiB/s (19.4MB/s), 4779KiB/s-8504KiB/s (4894kB/s-8708kB/s), io=32.0MiB (33.6MB), run=1445-1727msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153392: Wed Jul 15 10:36:15 2026 read: IOPS=2, BW=9438KiB/s (9664kB/s)(12.0MiB/1302msec) clat (msec): min=340, max=449, avg=408.30, stdev=59.24 lat (msec): min=340, max=449, avg=408.30, stdev=59.24 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 435], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 7787, max= 8159, per=85.51%, avg=7973.00, stdev=263.04, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=50.88%, ctx=2830, 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=153393: Wed Jul 15 10:36:15 2026 read: IOPS=0, BW=2331KiB/s (2387kB/s)(4096KiB/1757msec) clat (nsec): min=352888k, max=352888k, avg=352887787.00, stdev= 0.00 lat (nsec): min=352890k, max=352890k, avg=352890283.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 8031, max= 8031, per=86.13%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4662KiB/s (4774kB/s)(8192KiB/1757msec); 0 zone resets clat (msec): min=265, max=1097, avg=681.78, stdev=588.51 lat (msec): min=265, max=1098, avg=682.05, stdev=588.49 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 266], 50.00th=[ 266], 60.00th=[ 1099], | 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= 8192, max= 8192, per=47.95%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=20.39%, ctx=1100, 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=153394: Wed Jul 15 10:36:15 2026 write: IOPS=1, BW=6407KiB/s (6560kB/s)(12.0MiB/1918msec); 0 zone resets clat (msec): min=83, max=1502, avg=631.41, stdev=762.42 lat (msec): min=83, max=1502, avg=631.74, stdev=762.36 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 84], | 30.00th=[ 84], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] lat (msec) : 100=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=10.75%, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=153395: Wed Jul 15 10:36:15 2026 write: IOPS=1, BW=7254KiB/s (7428kB/s)(12.0MiB/1694msec); 0 zone resets clat (msec): min=441, max=645, avg=547.55, stdev=102.63 lat (msec): min=441, max=646, avg=547.78, stdev=102.62 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 8159, max= 8192, per=47.85%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=16.30%, ctx=80, 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 Run status group 0 (all jobs): READ: bw=9325KiB/s (9549kB/s), 2331KiB/s-9438KiB/s (2387kB/s-9664kB/s), io=16.0MiB (16.8MB), run=1302-1757msec WRITE: bw=16.7MiB/s (17.5MB/s), 4662KiB/s-7254KiB/s (4774kB/s-7428kB/s), io=32.0MiB (33.6MB), run=1694-1918msec