== sanity test 398b: DIO and buffer IO race ============== 19:15:20 (1788218120) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.74977 s, 8.8 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=173915: Mon Aug 31 19:17:48 2026 read: IOPS=11, BW=46.2KiB/s (47.3kB/s)(5992KiB/129625msec) clat (usec): min=32, max=912171, avg=41830.83, stdev=41707.01 lat (usec): min=33, max=912172, avg=41833.57, stdev=41710.41 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 105], 20.00th=[ 18482], | 30.00th=[ 24511], 40.00th=[ 29492], 50.00th=[ 34866], 60.00th=[ 41157], | 70.00th=[ 49546], 80.00th=[ 61080], 90.00th=[ 80217], 95.00th=[ 99091], | 99.00th=[154141], 99.50th=[185598], 99.90th=[641729], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 7, max= 111, per=25.07%, avg=45.89, stdev=19.35, samples=255 iops : min= 1, max= 27, avg=10.83, stdev= 4.86, samples=255 write: IOPS=12, BW=48.6KiB/s (49.7kB/s)(6296KiB/129625msec); 0 zone resets clat (usec): min=935, max=411910, avg=42294.72, stdev=44269.55 lat (usec): min=937, max=411912, avg=42297.02, stdev=44269.23 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1647], 20.00th=[ 3949], | 30.00th=[ 7963], 40.00th=[ 17957], 50.00th=[ 31327], 60.00th=[ 44303], | 70.00th=[ 55837], 80.00th=[ 73925], 90.00th=[101188], 95.00th=[126354], | 99.00th=[181404], 99.50th=[210764], 99.90th=[383779], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 7, max= 118, per=25.44%, avg=48.58, stdev=21.03, samples=253 iops : min= 1, max= 29, avg=11.51, stdev= 5.31, samples=253 lat (usec) : 50=0.59%, 100=4.04%, 250=0.68%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=6.45%, 4=4.00%, 10=6.71%, 20=9.54%, 50=35.61% lat (msec) : 100=24.48%, 250=7.32%, 500=0.23%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=4.61%, ctx=6300, 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=173917: Mon Aug 31 19:17:48 2026 read: IOPS=11, BW=47.3KiB/s (48.4kB/s)(5940KiB/125687msec) clat (usec): min=31, max=687015, avg=39297.70, stdev=36355.30 lat (usec): min=31, max=687017, avg=39298.94, stdev=36355.28 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 56], 10.00th=[ 70], 20.00th=[ 16188], | 30.00th=[ 21890], 40.00th=[ 27657], 50.00th=[ 32113], 60.00th=[ 39060], | 70.00th=[ 46924], 80.00th=[ 59507], 90.00th=[ 80217], 95.00th=[ 95945], | 99.00th=[145753], 99.50th=[162530], 99.90th=[400557], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 111, per=25.63%, avg=46.91, stdev=22.09, samples=247 iops : min= 1, max= 27, avg=11.09, stdev= 5.55, samples=247 write: IOPS=12, BW=50.5KiB/s (51.7kB/s)(6348KiB/125687msec); 0 zone resets clat (usec): min=802, max=764912, avg=42148.23, stdev=47724.77 lat (usec): min=803, max=764914, avg=42161.42, stdev=47720.03 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1205], 10.00th=[ 1532], 20.00th=[ 3392], | 30.00th=[ 8225], 40.00th=[ 17695], 50.00th=[ 30540], 60.00th=[ 42206], | 70.00th=[ 55837], 80.00th=[ 71828], 90.00th=[ 99091], 95.00th=[128451], | 99.00th=[187696], 99.50th=[229639], 99.90th=[413139], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 7, max= 127, per=26.28%, avg=50.19, stdev=23.02, samples=247 iops : min= 1, max= 31, avg=11.91, stdev= 5.78, samples=247 lat (usec) : 50=0.91%, 100=5.11%, 250=0.36%, 500=0.10%, 750=0.10% lat (usec) : 1000=0.29% lat (msec) : 2=6.61%, 4=4.69%, 10=5.73%, 20=9.99%, 50=35.68% lat (msec) : 100=23.27%, 250=6.84%, 500=0.26%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=5.08%, ctx=6249, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=173920: Mon Aug 31 19:17:48 2026 read: IOPS=11, BW=46.2KiB/s (47.3kB/s)(6028KiB/130456msec) clat (usec): min=28, max=799082, avg=40800.34, stdev=37365.21 lat (usec): min=28, max=799083, avg=40803.12, stdev=37365.21 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 57], 10.00th=[ 75], 20.00th=[ 17171], | 30.00th=[ 22938], 40.00th=[ 28181], 50.00th=[ 34341], 60.00th=[ 41157], | 70.00th=[ 50070], 80.00th=[ 61080], 90.00th=[ 80217], 95.00th=[102237], | 99.00th=[141558], 99.50th=[175113], 99.90th=[283116], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 109, per=24.91%, avg=45.59, stdev=21.71, samples=256 iops : min= 1, max= 27, avg=10.76, stdev= 5.47, samples=256 write: IOPS=11, BW=47.0KiB/s (49.1kB/s)(6260KiB/130456msec); 0 zone resets clat (usec): min=921, max=414733, avg=43802.11, stdev=46773.39 lat (usec): min=922, max=414734, avg=43805.15, stdev=46772.25 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1221], 10.00th=[ 1729], 20.00th=[ 4359], | 30.00th=[ 9110], 40.00th=[ 20579], 50.00th=[ 32900], 60.00th=[ 42730], | 70.00th=[ 55313], 80.00th=[ 73925], 90.00th=[102237], 95.00th=[132645], | 99.00th=[212861], 99.50th=[244319], 99.90th=[358613], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 7, max= 119, per=24.90%, avg=47.56, stdev=20.13, samples=255 iops : min= 1, max= 29, avg=11.25, stdev= 5.04, samples=255 lat (usec) : 50=0.85%, 100=4.75%, 250=0.55%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.20% lat (msec) : 2=5.76%, 4=3.68%, 10=6.48%, 20=9.67%, 50=35.81% lat (msec) : 100=24.02%, 250=7.75%, 500=0.26%, 1000=0.03% cpu : usr=0.08%, sys=4.99%, ctx=6364, 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=173921: Mon Aug 31 19:17:48 2026 read: IOPS=11, BW=46.2KiB/s (47.3kB/s)(6052KiB/131077msec) clat (usec): min=32, max=272339, avg=40929.74, stdev=33528.17 lat (usec): min=32, max=272340, avg=40933.07, stdev=33528.73 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 56], 10.00th=[ 69], 20.00th=[ 16712], | 30.00th=[ 23200], 40.00th=[ 28705], 50.00th=[ 34866], 60.00th=[ 41681], | 70.00th=[ 50594], 80.00th=[ 61604], 90.00th=[ 82314], 95.00th=[101188], | 99.00th=[154141], 99.50th=[173016], 99.90th=[252707], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 111, per=25.27%, avg=46.25, stdev=21.17, samples=255 iops : min= 1, max= 27, avg=10.92, stdev= 5.35, samples=255 write: IOPS=11, BW=47.6KiB/s (48.7kB/s)(6236KiB/131077msec); 0 zone resets clat (usec): min=846, max=1245.3k, avg=44076.46, stdev=58035.56 lat (usec): min=849, max=1245.3k, avg=44088.15, stdev=58033.17 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1172], 10.00th=[ 1352], | 20.00th=[ 3195], 30.00th=[ 7373], 40.00th=[ 17171], | 50.00th=[ 29230], 60.00th=[ 41157], 70.00th=[ 56886], | 80.00th=[ 76022], 90.00th=[ 106431], 95.00th=[ 137364], | 99.00th=[ 210764], 99.50th=[ 263193], 99.90th=[ 450888], | 99.95th=[1249903], 99.99th=[1249903] bw ( KiB/s): min= 7, max= 143, per=24.96%, avg=47.67, stdev=22.23, samples=255 iops : min= 1, max= 35, avg=11.28, stdev= 5.58, samples=255 lat (usec) : 50=1.17%, 100=5.05%, 250=0.36%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.33% lat (msec) : 2=7.58%, 4=3.68%, 10=6.64%, 20=8.66%, 50=33.63% lat (msec) : 100=24.61%, 250=7.75%, 500=0.29%, 2000=0.03% cpu : usr=0.07%, sys=4.89%, ctx=6299, 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=183KiB/s (188kB/s), 46.2KiB/s-47.3KiB/s (47.3kB/s-48.4kB/s), io=23.4MiB (24.6MB), run=125687-131077msec WRITE: bw=192KiB/s (196kB/s), 47.6KiB/s-50.5KiB/s (48.7kB/s-51.7kB/s), io=24.6MiB (25.7MB), run=125687-131077msec rand-rw: (groupid=0, jobs=1): err= 0: pid=173914: Mon Aug 31 19:20:27 2026 read: IOPS=5, BW=20.6KiB/s (21.1kB/s)(5992KiB/290217msec) clat (msec): min=5, max=941, avg=35.55, stdev=42.49 lat (msec): min=5, max=941, avg=35.55, stdev=42.49 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 73], 95.00th=[ 104], | 99.00th=[ 180], 99.50th=[ 230], 99.90th=[ 401], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 7, max= 95, per=28.81%, avg=23.63, stdev=16.07, samples=488 iops : min= 1, max= 23, avg= 5.26, stdev= 4.03, samples=488 write: IOPS=5, BW=21.7KiB/s (22.2kB/s)(6296KiB/290217msec); 0 zone resets clat (msec): min=37, max=681, avg=150.29, stdev=71.43 lat (msec): min=37, max=681, avg=150.30, stdev=71.43 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 91], | 30.00th=[ 106], 40.00th=[ 122], 50.00th=[ 136], 60.00th=[ 153], | 70.00th=[ 174], 80.00th=[ 203], 90.00th=[ 245], 95.00th=[ 296], | 99.00th=[ 380], 99.50th=[ 397], 99.90th=[ 567], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 56, per=24.72%, avg=21.26, stdev= 9.96, samples=567 iops : min= 1, max= 14, avg= 4.66, stdev= 2.52, samples=567 lat (msec) : 10=3.52%, 20=16.37%, 50=20.74%, 100=18.95%, 250=35.45% lat (msec) : 500=4.88%, 750=0.07%, 1000=0.03% cpu : usr=0.05%, sys=1.06%, ctx=5027, 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=173916: Mon Aug 31 19:20:27 2026 read: IOPS=5, BW=20.5KiB/s (20.0kB/s)(5940KiB/289682msec) clat (msec): min=4, max=839, avg=35.55, stdev=41.16 lat (msec): min=4, max=839, avg=35.55, stdev=41.16 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 46], 90.00th=[ 75], 95.00th=[ 105], | 99.00th=[ 176], 99.50th=[ 264], 99.90th=[ 330], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 95, per=28.68%, avg=23.52, stdev=16.50, samples=486 iops : min= 1, max= 23, avg= 5.24, stdev= 4.15, samples=486 write: IOPS=5, BW=21.9KiB/s (22.4kB/s)(6348KiB/289682msec); 0 zone resets clat (msec): min=36, max=513, avg=149.01, stdev=70.66 lat (msec): min=36, max=513, avg=149.01, stdev=70.67 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 75], 20.00th=[ 91], | 30.00th=[ 105], 40.00th=[ 120], 50.00th=[ 134], 60.00th=[ 150], | 70.00th=[ 174], 80.00th=[ 199], 90.00th=[ 245], 95.00th=[ 284], | 99.00th=[ 380], 99.50th=[ 414], 99.90th=[ 502], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 7, max= 64, per=24.97%, avg=21.47, stdev=10.12, samples=567 iops : min= 1, max= 16, avg= 4.72, stdev= 2.57, samples=567 lat (msec) : 10=3.22%, 20=16.50%, 50=20.31%, 100=19.47%, 250=35.55% lat (msec) : 500=4.85%, 750=0.07%, 1000=0.03% cpu : usr=0.05%, sys=1.03%, ctx=4937, 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=173918: Mon Aug 31 19:20:27 2026 read: IOPS=5, BW=20.9KiB/s (21.4kB/s)(6028KiB/288930msec) clat (msec): min=4, max=394, avg=36.80, stdev=35.14 lat (msec): min=4, max=394, avg=36.80, stdev=35.14 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 38], 80.00th=[ 53], 90.00th=[ 83], 95.00th=[ 108], | 99.00th=[ 157], 99.50th=[ 226], 99.90th=[ 296], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 80, per=28.27%, avg=23.18, stdev=15.72, samples=501 iops : min= 1, max= 20, avg= 5.15, stdev= 3.95, samples=501 write: IOPS=5, BW=21.7KiB/s (22.2kB/s)(6260KiB/288930msec); 0 zone resets clat (msec): min=29, max=979, avg=148.93, stdev=76.57 lat (msec): min=29, max=979, avg=148.93, stdev=76.57 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 63], 10.00th=[ 75], 20.00th=[ 92], | 30.00th=[ 106], 40.00th=[ 122], 50.00th=[ 134], 60.00th=[ 148], | 70.00th=[ 167], 80.00th=[ 194], 90.00th=[ 243], 95.00th=[ 292], | 99.00th=[ 388], 99.50th=[ 422], 99.90th=[ 827], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 72, per=25.15%, avg=21.63, stdev=10.22, samples=556 iops : min= 1, max= 18, avg= 4.76, stdev= 2.60, samples=556 lat (msec) : 10=3.22%, 20=15.43%, 50=21.09%, 100=19.86%, 250=35.77% lat (msec) : 500=4.46%, 750=0.10%, 1000=0.07% cpu : usr=0.04%, sys=1.02%, ctx=4926, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=173919: Mon Aug 31 19:20:27 2026 read: IOPS=5, BW=20.9KiB/s (21.4kB/s)(6052KiB/289029msec) clat (msec): min=4, max=350, avg=35.82, stdev=33.87 lat (msec): min=4, max=351, avg=35.82, stdev=33.87 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 50], 90.00th=[ 81], 95.00th=[ 111], | 99.00th=[ 161], 99.50th=[ 180], 99.90th=[ 300], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 7, max= 94, per=29.65%, avg=24.31, stdev=17.03, samples=480 iops : min= 1, max= 23, avg= 5.43, stdev= 4.30, samples=480 write: IOPS=5, BW=21.6KiB/s (22.1kB/s)(6236KiB/289029msec); 0 zone resets clat (msec): min=28, max=1089, avg=150.39, stdev=79.90 lat (msec): min=28, max=1089, avg=150.40, stdev=79.90 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 63], 10.00th=[ 73], 20.00th=[ 91], | 30.00th=[ 105], 40.00th=[ 117], 50.00th=[ 132], 60.00th=[ 150], | 70.00th=[ 171], 80.00th=[ 203], 90.00th=[ 247], 95.00th=[ 292], | 99.00th=[ 418], 99.50th=[ 456], 99.90th=[ 693], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 64, per=24.64%, avg=21.19, stdev=10.30, samples=564 iops : min= 1, max= 16, avg= 4.64, stdev= 2.61, samples=564 lat (msec) : 10=3.35%, 20=16.24%, 50=21.16%, 100=19.14%, 250=35.19% lat (msec) : 500=4.72%, 750=0.16%, 2000=0.03% cpu : usr=0.05%, sys=1.04%, ctx=5093, 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=82.7KiB/s (84.7kB/s), 20.5KiB/s-20.9KiB/s (20.0kB/s-21.4kB/s), io=23.4MiB (24.6MB), run=288930-290217msec WRITE: bw=86.6KiB/s (88.7kB/s), 21.6KiB/s-21.9KiB/s (22.1kB/s-22.4kB/s), io=24.6MiB (25.7MB), run=288930-290217msec 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=173977: Mon Aug 31 19:21:12 2026 read: IOPS=10, BW=170KiB/s (174kB/s)(5920KiB/34749msec) clat (usec): min=32, max=293485, avg=47468.92, stdev=42828.24 lat (usec): min=33, max=293487, avg=47470.74, stdev=42829.65 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 60], 10.00th=[ 70], 20.00th=[ 108], | 30.00th=[ 28967], 40.00th=[ 36963], 50.00th=[ 44303], 60.00th=[ 53216], | 70.00th=[ 59507], 80.00th=[ 70779], 90.00th=[ 91751], 95.00th=[113771], | 99.00th=[214959], 99.50th=[291505], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 62, max= 380, per=26.27%, avg=170.47, stdev=72.62, samples=68 iops : min= 3, max= 23, avg= 9.87, stdev= 4.58, samples=68 write: IOPS=11, BW=183KiB/s (188kB/s)(6368KiB/34749msec); 0 zone resets clat (usec): min=1168, max=272543, avg=42093.16, stdev=45754.03 lat (usec): min=1171, max=272548, avg=42101.99, stdev=45749.85 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1876], 10.00th=[ 3064], 20.00th=[ 6652], | 30.00th=[ 10814], 40.00th=[ 16188], 50.00th=[ 24511], 60.00th=[ 36439], | 70.00th=[ 50594], 80.00th=[ 73925], 90.00th=[111674], 95.00th=[139461], | 99.00th=[204473], 99.50th=[221250], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 23, max= 433, per=26.85%, avg=183.38, stdev=80.61, samples=68 iops : min= 1, max= 27, avg=10.69, stdev= 5.12, samples=68 lat (usec) : 50=1.04%, 100=8.46%, 250=1.17%, 500=0.13%, 750=0.13% lat (msec) : 2=4.30%, 4=3.12%, 10=7.55%, 20=10.03%, 50=28.26% lat (msec) : 100=25.78%, 250=9.64%, 500=0.39% cpu : usr=0.05%, sys=4.73%, ctx=1487, 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=173979: Mon Aug 31 19:21:12 2026 read: IOPS=9, BW=156KiB/s (159kB/s)(5744KiB/36884msec) clat (usec): min=40, max=477543, avg=50243.32, stdev=49036.42 lat (usec): min=40, max=477545, avg=50256.65, stdev=49033.04 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 60], 10.00th=[ 71], 20.00th=[ 212], | 30.00th=[ 26870], 40.00th=[ 36963], 50.00th=[ 43254], 60.00th=[ 51643], | 70.00th=[ 62653], 80.00th=[ 78119], 90.00th=[100140], 95.00th=[122160], | 99.00th=[231736], 99.50th=[312476], 99.90th=[476054], 99.95th=[476054], | 99.99th=[476054] bw ( KiB/s): min= 24, max= 343, per=25.27%, avg=164.03, stdev=74.70, samples=68 iops : min= 1, max= 21, avg= 9.47, stdev= 4.72, samples=68 write: IOPS=11, BW=177KiB/s (182kB/s)(6544KiB/36884msec); 0 zone resets clat (usec): min=1215, max=292075, avg=45203.96, stdev=53879.40 lat (usec): min=1217, max=292076, avg=45214.20, stdev=53875.65 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1975], 10.00th=[ 2671], 20.00th=[ 5211], | 30.00th=[ 8586], 40.00th=[ 13960], 50.00th=[ 24511], 60.00th=[ 36439], | 70.00th=[ 51119], 80.00th=[ 79168], 90.00th=[124257], 95.00th=[158335], | 99.00th=[244319], 99.50th=[265290], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 24, max= 542, per=25.90%, avg=176.88, stdev=96.97, samples=72 iops : min= 1, max= 33, avg=10.28, stdev= 6.12, samples=72 lat (usec) : 50=0.39%, 100=8.20%, 250=0.91%, 500=0.13%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=2.73%, 4=5.08%, 10=10.81%, 20=8.20%, 50=26.43% lat (msec) : 100=24.61%, 250=11.20%, 500=0.91% cpu : usr=0.08%, sys=4.76%, ctx=1423, 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=173982: Mon Aug 31 19:21:12 2026 read: IOPS=11, BW=177KiB/s (182kB/s)(6256KiB/35258msec) clat (usec): min=36, max=316244, avg=48239.75, stdev=43574.52 lat (usec): min=36, max=316246, avg=48241.19, stdev=43574.53 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 60], 10.00th=[ 71], 20.00th=[ 116], | 30.00th=[ 25560], 40.00th=[ 35914], 50.00th=[ 43254], 60.00th=[ 50594], | 70.00th=[ 61604], 80.00th=[ 79168], 90.00th=[100140], 95.00th=[120062], | 99.00th=[233833], 99.50th=[242222], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 31, max= 380, per=27.88%, avg=180.94, stdev=75.51, samples=68 iops : min= 1, max= 23, avg=10.51, stdev= 4.78, samples=68 write: IOPS=10, BW=171KiB/s (175kB/s)(6032KiB/35258msec); 0 zone resets clat (usec): min=1573, max=281402, avg=42356.17, stdev=47181.48 lat (usec): min=1575, max=281405, avg=42364.76, stdev=47188.84 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1893], 10.00th=[ 2704], 20.00th=[ 6128], | 30.00th=[ 9372], 40.00th=[ 15139], 50.00th=[ 25035], 60.00th=[ 36963], | 70.00th=[ 53740], 80.00th=[ 70779], 90.00th=[112722], 95.00th=[135267], | 99.00th=[198181], 99.50th=[278922], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 24, max= 378, per=25.61%, avg=174.93, stdev=79.88, samples=67 iops : min= 1, max= 23, avg=10.15, stdev= 5.05, samples=67 lat (usec) : 50=1.04%, 100=8.46%, 250=1.95%, 500=0.13%, 1000=0.39% lat (msec) : 2=3.78%, 4=3.39%, 10=8.46%, 20=8.07%, 50=27.86% lat (msec) : 100=25.65%, 250=10.42%, 500=0.39% cpu : usr=0.09%, sys=4.75%, ctx=1474, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=173983: Mon Aug 31 19:21:12 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(6032KiB/35881msec) clat (usec): min=40, max=541960, avg=49880.48, stdev=48902.83 lat (usec): min=40, max=541961, avg=49882.04, stdev=48902.66 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 58], 10.00th=[ 74], 20.00th=[ 114], | 30.00th=[ 25035], 40.00th=[ 36963], 50.00th=[ 47973], 60.00th=[ 55837], | 70.00th=[ 64226], 80.00th=[ 74974], 90.00th=[ 99091], 95.00th=[117965], | 99.00th=[181404], 99.50th=[299893], 99.90th=[541066], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 63, max= 351, per=26.01%, avg=168.78, stdev=61.47, samples=69 iops : min= 3, max= 21, avg= 9.75, stdev= 3.89, samples=69 write: IOPS=10, BW=174KiB/s (179kB/s)(6256KiB/35881msec); 0 zone resets clat (usec): min=1357, max=327125, avg=43125.34, stdev=47739.01 lat (usec): min=1368, max=327128, avg=43128.16, stdev=47739.04 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1680], 10.00th=[ 1991], 20.00th=[ 5604], | 30.00th=[ 9896], 40.00th=[ 15401], 50.00th=[ 25560], 60.00th=[ 40633], | 70.00th=[ 53740], 80.00th=[ 73925], 90.00th=[107480], 95.00th=[135267], | 99.00th=[202376], 99.50th=[242222], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 62, max= 446, per=25.84%, avg=176.51, stdev=77.65, samples=69 iops : min= 3, max= 27, avg=10.25, stdev= 4.89, samples=69 lat (usec) : 50=1.43%, 100=7.68%, 250=1.56%, 500=0.65%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=5.60%, 4=2.99%, 10=7.55%, 20=7.81%, 50=24.61% lat (msec) : 100=28.78%, 250=10.68%, 500=0.26%, 750=0.13% cpu : usr=0.05%, sys=4.52%, ctx=1441, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=649KiB/s (665kB/s), 156KiB/s-177KiB/s (159kB/s-182kB/s), io=23.4MiB (24.5MB), run=34749-36884msec WRITE: bw=683KiB/s (700kB/s), 171KiB/s-183KiB/s (175kB/s-188kB/s), io=24.6MiB (25.8MB), run=34749-36884msec rand-rw: (groupid=0, jobs=1): err= 0: pid=173976: Mon Aug 31 19:21:56 2026 read: IOPS=4, BW=73.9KiB/s (75.6kB/s)(5920KiB/80135msec) clat (msec): min=5, max=305, avg=44.48, stdev=48.01 lat (msec): min=5, max=305, avg=44.48, stdev=48.01 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 105], 95.00th=[ 163], | 99.00th=[ 230], 99.50th=[ 296], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 288, per=30.77%, avg=90.46, stdev=60.01, samples=128 iops : min= 1, max= 18, avg= 4.89, stdev= 3.80, samples=128 write: IOPS=4, BW=79.5KiB/s (81.4kB/s)(6368KiB/80135msec); 0 zone resets clat (msec): min=39, max=602, avg=159.74, stdev=90.19 lat (msec): min=39, max=602, avg=159.75, stdev=90.19 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 62], 10.00th=[ 72], 20.00th=[ 90], | 30.00th=[ 107], 40.00th=[ 118], 50.00th=[ 134], 60.00th=[ 153], | 70.00th=[ 184], 80.00th=[ 224], 90.00th=[ 279], 95.00th=[ 334], | 99.00th=[ 527], 99.50th=[ 567], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 30, max= 192, per=25.84%, avg=80.11, stdev=42.08, samples=156 iops : min= 1, max= 12, avg= 4.22, stdev= 2.72, samples=156 lat (msec) : 10=2.34%, 20=13.93%, 50=19.92%, 100=20.44%, 250=35.81% lat (msec) : 500=6.90%, 750=0.65% cpu : usr=0.04%, sys=0.98%, ctx=1235, 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=173978: Mon Aug 31 19:21:56 2026 read: IOPS=4, BW=70.7KiB/s (72.4kB/s)(5744KiB/81289msec) clat (msec): min=4, max=335, avg=45.50, stdev=52.71 lat (msec): min=4, max=335, avg=45.50, stdev=52.71 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 56], 90.00th=[ 111], 95.00th=[ 169], | 99.00th=[ 275], 99.50th=[ 300], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 23, max= 415, per=30.00%, avg=88.20, stdev=64.26, samples=127 iops : min= 1, max= 25, avg= 4.77, stdev= 4.04, samples=127 write: IOPS=5, BW=80.5KiB/s (82.4kB/s)(6544KiB/81289msec); 0 zone resets clat (msec): min=41, max=563, avg=158.02, stdev=85.24 lat (msec): min=41, max=563, avg=158.03, stdev=85.24 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 59], 10.00th=[ 72], 20.00th=[ 87], | 30.00th=[ 103], 40.00th=[ 121], 50.00th=[ 138], 60.00th=[ 159], | 70.00th=[ 184], 80.00th=[ 215], 90.00th=[ 275], 95.00th=[ 330], | 99.00th=[ 447], 99.50th=[ 460], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 30, max= 192, per=26.63%, avg=82.55, stdev=43.84, samples=155 iops : min= 1, max= 12, avg= 4.39, stdev= 2.85, samples=155 lat (msec) : 10=1.95%, 20=13.67%, 50=21.09%, 100=20.18%, 250=34.90% lat (msec) : 500=8.07%, 750=0.13% cpu : usr=0.03%, sys=1.04%, ctx=1338, 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=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=173980: Mon Aug 31 19:21:56 2026 read: IOPS=4, BW=79.5KiB/s (81.4kB/s)(6256KiB/78727msec) clat (msec): min=5, max=395, avg=42.98, stdev=50.80 lat (msec): min=5, max=395, avg=42.98, stdev=50.80 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 49], 90.00th=[ 87], 95.00th=[ 159], | 99.00th=[ 253], 99.50th=[ 326], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 30, max= 317, per=31.33%, avg=92.11, stdev=67.22, samples=134 iops : min= 1, max= 19, avg= 4.96, stdev= 4.29, samples=134 write: IOPS=4, BW=76.6KiB/s (78.5kB/s)(6032KiB/78727msec); 0 zone resets clat (msec): min=40, max=656, avg=163.32, stdev=88.38 lat (msec): min=40, max=656, avg=163.33, stdev=88.38 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 61], 10.00th=[ 75], 20.00th=[ 95], | 30.00th=[ 109], 40.00th=[ 124], 50.00th=[ 140], 60.00th=[ 163], | 70.00th=[ 184], 80.00th=[ 224], 90.00th=[ 284], 95.00th=[ 338], | 99.00th=[ 477], 99.50th=[ 542], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 23, max= 192, per=26.56%, avg=82.33, stdev=38.81, samples=144 iops : min= 1, max= 12, avg= 4.38, stdev= 2.52, samples=144 lat (msec) : 10=1.04%, 20=16.15%, 50=24.87%, 100=15.89%, 250=33.98% lat (msec) : 500=7.81%, 750=0.26% cpu : usr=0.04%, sys=1.15%, ctx=1327, 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=173981: Mon Aug 31 19:21:56 2026 read: IOPS=4, BW=75.3KiB/s (77.1kB/s)(6032KiB/80103msec) clat (msec): min=6, max=316, avg=42.96, stdev=46.12 lat (msec): min=6, max=316, avg=42.96, stdev=46.12 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 57], 90.00th=[ 92], 95.00th=[ 136], | 99.00th=[ 253], 99.50th=[ 313], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 29, max= 288, per=31.06%, avg=91.33, stdev=59.08, samples=129 iops : min= 1, max= 18, avg= 4.93, stdev= 3.78, samples=129 write: IOPS=4, BW=78.1KiB/s (79.0kB/s)(6256KiB/80103msec); 0 zone resets clat (msec): min=45, max=592, avg=162.79, stdev=89.57 lat (msec): min=45, max=592, avg=162.79, stdev=89.57 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 66], 10.00th=[ 78], 20.00th=[ 92], | 30.00th=[ 105], 40.00th=[ 123], 50.00th=[ 138], 60.00th=[ 159], | 70.00th=[ 188], 80.00th=[ 215], 90.00th=[ 279], 95.00th=[ 334], | 99.00th=[ 468], 99.50th=[ 542], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 30, max= 224, per=25.90%, avg=80.30, stdev=40.10, samples=153 iops : min= 1, max= 14, avg= 4.24, stdev= 2.60, samples=153 lat (msec) : 10=1.30%, 20=13.15%, 50=23.70%, 100=20.57%, 250=33.07% lat (msec) : 500=7.94%, 750=0.26% cpu : usr=0.04%, sys=0.98%, ctx=1191, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=295KiB/s (302kB/s), 70.7KiB/s-79.5KiB/s (72.4kB/s-81.4kB/s), io=23.4MiB (24.5MB), run=78727-81289msec WRITE: bw=310KiB/s (317kB/s), 76.6KiB/s-80.5KiB/s (78.5kB/s-82.4kB/s), io=24.6MiB (25.8MB), run=78727-81289msec 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=174009: Mon Aug 31 19:22:14 2026 read: IOPS=2, BW=2057KiB/s (2106kB/s)(7168KiB/3485msec) clat (usec): min=571, max=353929, avg=233797.89, stdev=120624.86 lat (usec): min=572, max=353930, avg=233799.51, stdev=120624.59 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[162530], | 30.00th=[231736], 40.00th=[231736], 50.00th=[265290], 60.00th=[295699], | 70.00th=[295699], 80.00th=[325059], 90.00th=[354419], 95.00th=[354419], | 99.00th=[354419], 99.50th=[354419], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 1935, max= 3056, per=55.02%, avg=2253.50, stdev=536.68, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 write: IOPS=1, BW=1469KiB/s (1504kB/s)(5120KiB/3485msec); 0 zone resets clat (msec): min=108, max=756, avg=348.39, stdev=244.09 lat (msec): min=108, max=756, avg=348.50, stdev=244.08 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 109], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 2015, max= 4023, per=46.95%, avg=2692.33, stdev=1152.45, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=33.33%, 500=50.00%, 1000=8.33% cpu : usr=0.00%, sys=13.00%, ctx=169, 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=174010: Mon Aug 31 19:22:14 2026 read: IOPS=0, BW=410KiB/s (419kB/s)(2048KiB/5000msec) clat (msec): min=180, max=241, avg=211.45, stdev=43.18 lat (msec): min=180, max=241, avg=211.45, stdev=43.18 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 243], | 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= 1434, max= 2015, per=42.10%, avg=1724.50, stdev=410.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2048KiB/s (2097kB/s)(10.0MiB/5000msec); 0 zone resets clat (msec): min=129, max=824, avg=429.37, stdev=232.86 lat (msec): min=129, max=826, avg=429.84, stdev=233.17 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 186], | 30.00th=[ 220], 40.00th=[ 288], 50.00th=[ 414], 60.00th=[ 456], | 70.00th=[ 464], 80.00th=[ 592], 90.00th=[ 735], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1984, max= 4047, per=46.44%, avg=2662.67, stdev=1005.88, samples=6 iops : min= 1, max= 3, avg= 1.83, stdev= 0.98, samples=6 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.10%, sys=8.08%, ctx=143, 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=174011: Mon Aug 31 19:22:14 2026 read: IOPS=1, BW=1821KiB/s (1865kB/s)(6144KiB/3374msec) clat (usec): min=398, max=352266, avg=79668.21, stdev=142179.33 lat (usec): min=398, max=352266, avg=79669.20, stdev=142179.01 clat percentiles (usec): | 1.00th=[ 400], 5.00th=[ 400], 10.00th=[ 400], 20.00th=[ 474], | 30.00th=[ 474], 40.00th=[ 529], 50.00th=[ 529], 60.00th=[ 1614], | 70.00th=[123208], 80.00th=[123208], 90.00th=[350225], 95.00th=[350225], | 99.00th=[350225], 99.50th=[350225], 99.90th=[350225], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 2011, max= 3968, per=65.06%, avg=2664.67, stdev=1128.72, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1821KiB/s (1865kB/s)(6144KiB/3374msec); 0 zone resets clat (msec): min=106, max=1378, avg=470.20, stdev=457.36 lat (msec): min=106, max=1378, avg=470.27, stdev=457.36 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 384], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 1460, max= 2039, per=33.17%, avg=1901.80, stdev=247.74, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=8.09%, ctx=103, 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=174012: Mon Aug 31 19:22:14 2026 read: IOPS=1, BW=1151KiB/s (1179kB/s)(5120KiB/4448msec) clat (usec): min=540, max=533378, avg=191429.46, stdev=219311.54 lat (usec): min=541, max=533378, avg=191430.46, stdev=219311.25 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 537], | 30.00th=[ 586], 40.00th=[ 586], 50.00th=[181404], 60.00th=[181404], | 70.00th=[242222], 80.00th=[242222], 90.00th=[534774], 95.00th=[534774], | 99.00th=[534774], 99.50th=[534774], 99.90th=[534774], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 4023, max= 4031, per=98.32%, avg=4027.00, stdev= 5.66, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1612KiB/s (1650kB/s)(7168KiB/4448msec); 0 zone resets clat (msec): min=114, max=1079, avg=448.67, stdev=353.07 lat (msec): min=115, max=1079, avg=448.75, stdev=353.09 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 142], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 321], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 776], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 2015, max= 4096, per=52.83%, avg=3029.50, stdev=1158.81, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (usec) : 750=16.67% lat (msec) : 250=33.33%, 500=25.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=7.51%, ctx=175, 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=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=4096KiB/s (4194kB/s), 410KiB/s-2057KiB/s (419kB/s-2106kB/s), io=20.0MiB (20.0MB), run=3374-5000msec WRITE: bw=5734KiB/s (5872kB/s), 1469KiB/s-2048KiB/s (1504kB/s-2097kB/s), io=28.0MiB (29.4MB), run=3374-5000msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174004: Mon Aug 31 19:22:15 2026 read: IOPS=1, BW=1266KiB/s (1296kB/s)(7168KiB/5664msec) clat (msec): min=73, max=917, avg=409.93, stdev=323.75 lat (msec): min=73, max=917, avg=409.93, stdev=323.75 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 131], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 275], 60.00th=[ 531], | 70.00th=[ 531], 80.00th=[ 735], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 1885, max= 4047, per=66.56%, avg=2406.00, stdev=919.71, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=904KiB/s (926kB/s)(5120KiB/5664msec); 0 zone resets clat (msec): min=228, max=935, avg=471.90, stdev=287.40 lat (msec): min=228, max=935, avg=472.01, stdev=287.40 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 228], 10.00th=[ 228], 20.00th=[ 228], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 518], 80.00th=[ 518], 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= 2023, max= 2048, per=40.23%, avg=2036.25, stdev=11.35, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=16.67%, 750=25.00%, 1000=16.67% cpu : usr=0.04%, sys=2.53%, ctx=66, 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=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=174005: Mon Aug 31 19:22:15 2026 read: IOPS=0, BW=418KiB/s (428kB/s)(2048KiB/4895msec) clat (msec): min=129, max=143, avg=136.23, stdev= 9.78 lat (msec): min=129, max=143, avg=136.23, stdev= 9.78 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 130], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 130], 60.00th=[ 144], | 70.00th=[ 144], 80.00th=[ 144], 90.00th=[ 144], 95.00th=[ 144], | 99.00th=[ 144], 99.50th=[ 144], 99.90th=[ 144], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 1420, max= 2031, per=47.73%, avg=1725.50, stdev=432.04, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2092KiB/s (2142kB/s)(10.0MiB/4895msec); 0 zone resets clat (msec): min=191, max=774, avg=442.99, stdev=209.44 lat (msec): min=191, max=774, avg=443.11, stdev=209.45 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 222], | 30.00th=[ 300], 40.00th=[ 330], 50.00th=[ 351], 60.00th=[ 397], | 70.00th=[ 493], 80.00th=[ 651], 90.00th=[ 726], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1992, max= 4047, per=50.66%, avg=2564.57, stdev=922.11, samples=7 iops : min= 1, max= 3, avg= 1.86, stdev= 0.90, samples=7 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.04%, sys=3.23%, ctx=69, 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=174007: Mon Aug 31 19:22:15 2026 read: IOPS=1, BW=1307KiB/s (1338kB/s)(6144KiB/4701msec) clat (msec): min=116, max=893, avg=346.86, stdev=284.09 lat (msec): min=116, max=893, avg=346.86, stdev=284.09 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 226], 50.00th=[ 226], 60.00th=[ 342], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 2023, max= 3771, per=68.22%, avg=2466.00, stdev=870.02, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1307KiB/s (1338kB/s)(6144KiB/4701msec); 0 zone resets clat (msec): min=243, max=592, avg=429.72, stdev=147.09 lat (msec): min=243, max=592, avg=429.83, stdev=147.07 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 518], | 70.00th=[ 567], 80.00th=[ 567], 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= 1992, max= 3007, per=44.79%, avg=2267.50, stdev=493.53, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (msec) : 250=33.33%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=2.00%, ctx=52, 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=174008: Mon Aug 31 19:22:15 2026 read: IOPS=1, BW=1199KiB/s (1228kB/s)(5120KiB/4270msec) clat (msec): min=113, max=397, avg=211.37, stdev=120.58 lat (msec): min=113, max=397, avg=211.37, stdev=120.58 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 126], 40.00th=[ 126], 50.00th=[ 155], 60.00th=[ 155], | 70.00th=[ 268], 80.00th=[ 268], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 3984, max= 4063, per=100.00%, avg=4023.50, stdev=55.86, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1679KiB/s (1719kB/s)(7168KiB/4270msec); 0 zone resets clat (msec): min=245, max=781, avg=423.49, stdev=183.38 lat (msec): min=245, max=782, avg=423.60, stdev=183.38 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 359], 40.00th=[ 359], 50.00th=[ 414], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 502], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1497, max= 4047, per=53.27%, avg=2696.60, stdev=1234.09, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.09%, sys=3.70%, ctx=71, 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=3616KiB/s (3703kB/s), 418KiB/s-1307KiB/s (428kB/s-1338kB/s), io=20.0MiB (20.0MB), run=4270-5664msec WRITE: bw=5062KiB/s (5184kB/s), 904KiB/s-2092KiB/s (926kB/s-2142kB/s), io=28.0MiB (29.4MB), run=4270-5664msec 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=174023: Mon Aug 31 19:22:32 2026 read: IOPS=0, BW=2273KiB/s (2327kB/s)(12.0MiB/5407msec) clat (msec): min=893, max=3250, avg=1732.52, stdev=1317.39 lat (msec): min=893, max=3250, avg=1732.52, stdev=1317.39 clat percentiles (msec): | 1.00th=[ 894], 5.00th=[ 894], 10.00th=[ 894], 20.00th=[ 894], | 30.00th=[ 894], 40.00th=[ 1053], 50.00th=[ 1053], 60.00th=[ 1053], | 70.00th=[ 3239], 80.00th=[ 3239], 90.00th=[ 3239], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 8126, max= 8143, per=100.00%, avg=8134.50, stdev=12.02, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.06%, sys=8.03%, ctx=684, 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=174024: Mon Aug 31 19:22:32 2026 read: IOPS=0, BW=807KiB/s (826kB/s)(4096KiB/5076msec) clat (nsec): min=3174.0M, max=3174.0M, avg=3174000427.00, stdev= 0.00 lat (nsec): min=3174.0M, max=3174.0M, avg=3174002505.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3171], 5.00th=[ 3171], 10.00th=[ 3171], 20.00th=[ 3171], | 30.00th=[ 3171], 40.00th=[ 3171], 50.00th=[ 3171], 60.00th=[ 3171], | 70.00th=[ 3171], 80.00th=[ 3171], 90.00th=[ 3171], 95.00th=[ 3171], | 99.00th=[ 3171], 99.50th=[ 3171], 99.90th=[ 3171], 99.95th=[ 3171], | 99.99th=[ 3171] bw ( KiB/s): min= 7816, max= 7816, per=100.00%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1614KiB/s (1653kB/s)(8192KiB/5076msec); 0 zone resets clat (msec): min=424, max=1382, avg=903.42, stdev=676.88 lat (msec): min=425, max=1382, avg=903.77, stdev=676.97 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.60%, ctx=150, 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=174025: Mon Aug 31 19:22:32 2026 write: IOPS=0, BW=2911KiB/s (2981kB/s)(12.0MiB/4221msec); 0 zone resets clat (msec): min=467, max=2817, avg=1377.84, stdev=1261.05 lat (msec): min=468, max=2817, avg=1379.89, stdev=1260.00 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 2802], 80.00th=[ 2802], 90.00th=[ 2802], 95.00th=[ 2802], | 99.00th=[ 2802], 99.50th=[ 2802], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 7907, max= 8062, per=100.00%, avg=7984.50, stdev=109.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.44%, ctx=54, 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=174026: Mon Aug 31 19:22:32 2026 write: IOPS=0, BW=2290KiB/s (2345kB/s)(12.0MiB/5365msec); 0 zone resets clat (msec): min=651, max=2967, avg=1721.10, stdev=1168.17 lat (msec): min=651, max=2967, avg=1721.65, stdev=1168.20 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 1552], 50.00th=[ 1552], 60.00th=[ 1552], | 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= 7816, max= 8192, per=100.00%, avg=8004.00, stdev=265.87, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.99%, ctx=40, 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=3030KiB/s (3103kB/s), 807KiB/s-2273KiB/s (826kB/s-2327kB/s), io=16.0MiB (16.8MB), run=5076-5407msec WRITE: bw=6108KiB/s (6254kB/s), 1614KiB/s-2911KiB/s (1653kB/s-2981kB/s), io=32.0MiB (33.6MB), run=4221-5365msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174019: Mon Aug 31 19:22:33 2026 read: IOPS=0, BW=2077KiB/s (2127kB/s)(12.0MiB/5915msec) clat (msec): min=294, max=3916, avg=1904.84, stdev=1843.96 lat (msec): min=294, max=3916, avg=1904.84, stdev=1843.96 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 1502], 50.00th=[ 1502], 60.00th=[ 1502], | 70.00th=[ 3910], 80.00th=[ 3910], 90.00th=[ 3910], 95.00th=[ 3910], | 99.00th=[ 3910], 99.50th=[ 3910], 99.90th=[ 3910], 99.95th=[ 3910], | 99.99th=[ 3910] bw ( KiB/s): min= 8078, max= 8159, per=100.00%, avg=8118.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.45%, ctx=55, 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=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=174020: Mon Aug 31 19:22:33 2026 read: IOPS=0, BW=680KiB/s (696kB/s)(4096KiB/6027msec) clat (nsec): min=4180.4M, max=4180.4M, avg=4180373048.00, stdev= 0.00 lat (nsec): min=4180.4M, max=4180.4M, avg=4180374551.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4178], 5.00th=[ 4178], 10.00th=[ 4178], 20.00th=[ 4178], | 30.00th=[ 4178], 40.00th=[ 4178], 50.00th=[ 4178], 60.00th=[ 4178], | 70.00th=[ 4178], 80.00th=[ 4178], 90.00th=[ 4178], 95.00th=[ 4178], | 99.00th=[ 4178], 99.50th=[ 4178], 99.90th=[ 4178], 99.95th=[ 4178], | 99.99th=[ 4178] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1359KiB/s (1392kB/s)(8192KiB/6027msec); 0 zone resets clat (msec): min=674, max=992, avg=833.94, stdev=224.81 lat (msec): min=676, max=993, avg=834.76, stdev=223.92 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 995], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] 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=1.41%, ctx=44, 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=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=174021: Mon Aug 31 19:22:33 2026 write: IOPS=0, BW=1837KiB/s (1881kB/s)(12.0MiB/6690msec); 0 zone resets clat (msec): min=416, max=4942, avg=2184.67, stdev=2419.98 lat (msec): min=417, max=4943, avg=2185.11, stdev=2420.10 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 4933], 80.00th=[ 4933], 90.00th=[ 4933], 95.00th=[ 4933], | 99.00th=[ 4933], 99.50th=[ 4933], 99.90th=[ 4933], 99.95th=[ 4933], | 99.99th=[ 4933] bw ( KiB/s): min= 7892, max= 7984, per=100.00%, avg=7938.00, stdev=65.05, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.62%, ctx=90, 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=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=174022: Mon Aug 31 19:22:33 2026 write: IOPS=0, BW=2595KiB/s (2657kB/s)(12.0MiB/4736msec); 0 zone resets clat (msec): min=517, max=2574, avg=1542.29, stdev=1028.53 lat (msec): min=518, max=2579, avg=1544.38, stdev=1030.68 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 1536], | 70.00th=[ 2567], 80.00th=[ 2567], 90.00th=[ 2567], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.37%, ctx=56, 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=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=2718KiB/s (2784kB/s), 680KiB/s-2077KiB/s (696kB/s-2127kB/s), io=16.0MiB (16.8MB), run=5915-6027msec WRITE: bw=4898KiB/s (5016kB/s), 1359KiB/s-2595KiB/s (1392kB/s-2657kB/s), io=32.0MiB (33.6MB), run=4736-6690msec