== sanity test 398b: DIO and buffer IO race ============== 17:51:11 (1786485071) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.83624 s, 17.7 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=178799: Tue Aug 11 17:52:20 2026 read: IOPS=25, BW=101KiB/s (103kB/s)(5992KiB/59457msec) clat (usec): min=54, max=695857, avg=21633.32, stdev=20929.46 lat (usec): min=55, max=695858, avg=21633.97, stdev=20929.48 clat percentiles (usec): | 1.00th=[ 112], 5.00th=[ 8160], 10.00th=[ 9896], 20.00th=[ 12387], | 30.00th=[ 14746], 40.00th=[ 16909], 50.00th=[ 19006], 60.00th=[ 21103], | 70.00th=[ 24249], 80.00th=[ 28443], 90.00th=[ 35914], 95.00th=[ 42730], | 99.00th=[ 65274], 99.50th=[ 74974], 99.90th=[ 99091], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 6, max= 176, per=25.36%, avg=100.67, stdev=30.42, samples=118 iops : min= 1, max= 44, avg=24.73, stdev= 7.65, samples=118 write: IOPS=26, BW=106KiB/s (108kB/s)(6296KiB/59457msec); 0 zone resets clat (usec): min=784, max=89460, avg=17023.95, stdev=12745.00 lat (usec): min=785, max=89462, avg=17024.74, stdev=12745.04 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 3163], 10.00th=[ 3687], 20.00th=[ 5276], | 30.00th=[ 8455], 40.00th=[11469], 50.00th=[14353], 60.00th=[17433], | 70.00th=[21103], 80.00th=[26870], 90.00th=[34341], 95.00th=[40633], | 99.00th=[57410], 99.50th=[64750], 99.90th=[87557], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 31, max= 183, per=25.69%, avg=106.60, stdev=34.28, samples=117 iops : min= 7, max= 45, avg=26.21, stdev= 8.64, samples=117 lat (usec) : 100=0.26%, 250=0.75%, 500=0.03%, 1000=0.23% lat (msec) : 2=0.68%, 4=5.86%, 10=15.33%, 20=37.66%, 50=36.91% lat (msec) : 100=2.25%, 750=0.03% cpu : usr=0.10%, sys=26.51%, ctx=10317, 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=178800: Tue Aug 11 17:52:20 2026 read: IOPS=24, BW=98.5KiB/s (101kB/s)(5940KiB/60316msec) clat (usec): min=36, max=91117, avg=21213.18, stdev=11473.12 lat (usec): min=36, max=91118, avg=21213.86, stdev=11473.17 clat percentiles (usec): | 1.00th=[ 117], 5.00th=[ 8455], 10.00th=[ 9896], 20.00th=[12125], | 30.00th=[14353], 40.00th=[16909], 50.00th=[19268], 60.00th=[21365], | 70.00th=[24249], 80.00th=[28181], 90.00th=[35390], 95.00th=[44303], | 99.00th=[62129], 99.50th=[65799], 99.90th=[88605], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 6, max= 183, per=24.76%, avg=98.31, stdev=30.38, samples=120 iops : min= 1, max= 45, avg=24.14, stdev= 7.62, samples=120 write: IOPS=26, BW=105KiB/s (108kB/s)(6348KiB/60316msec); 0 zone resets clat (usec): min=759, max=700402, avg=18005.09, stdev=21599.13 lat (usec): min=759, max=700403, avg=18005.98, stdev=21599.17 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 3261], 10.00th=[ 3785], 20.00th=[ 5473], | 30.00th=[ 9372], 40.00th=[ 11994], 50.00th=[ 14746], 60.00th=[ 17433], | 70.00th=[ 21627], 80.00th=[ 27132], 90.00th=[ 35390], 95.00th=[ 43779], | 99.00th=[ 61080], 99.50th=[ 64750], 99.90th=[ 92799], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 23, max= 199, per=25.54%, avg=106.01, stdev=36.59, samples=119 iops : min= 5, max= 49, avg=26.07, stdev= 9.22, samples=119 lat (usec) : 50=0.07%, 100=0.20%, 250=0.81%, 500=0.10%, 1000=0.23% lat (msec) : 2=0.49%, 4=5.76%, 10=13.87%, 20=38.67%, 50=37.04% lat (msec) : 100=2.73%, 750=0.03% cpu : usr=0.08%, sys=26.27%, ctx=10285, 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=178801: Tue Aug 11 17:52:20 2026 read: IOPS=25, BW=102KiB/s (104kB/s)(6028KiB/59174msec) clat (usec): min=33, max=93471, avg=20720.09, stdev=11064.24 lat (usec): min=33, max=93472, avg=20720.81, stdev=11064.33 clat percentiles (usec): | 1.00th=[ 122], 5.00th=[ 7963], 10.00th=[ 9765], 20.00th=[11863], | 30.00th=[13829], 40.00th=[16188], 50.00th=[18744], 60.00th=[20841], | 70.00th=[23987], 80.00th=[28443], 90.00th=[35390], 95.00th=[42730], | 99.00th=[54264], 99.50th=[59507], 99.90th=[79168], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 39, max= 176, per=25.83%, avg=102.56, stdev=32.85, samples=116 iops : min= 9, max= 44, avg=25.21, stdev= 8.31, samples=116 write: IOPS=26, BW=106KiB/s (108kB/s)(6260KiB/59174msec); 0 zone resets clat (usec): min=802, max=662935, avg=17706.94, stdev=20672.15 lat (usec): min=803, max=662936, avg=17708.69, stdev=20672.61 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 3261], 10.00th=[ 3818], 20.00th=[ 5735], | 30.00th=[ 9241], 40.00th=[ 11863], 50.00th=[ 14484], 60.00th=[ 17957], | 70.00th=[ 22152], 80.00th=[ 26870], 90.00th=[ 34341], 95.00th=[ 41157], | 99.00th=[ 54264], 99.50th=[ 76022], 99.90th=[112722], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 32, max= 200, per=25.64%, avg=106.42, stdev=35.22, samples=116 iops : min= 8, max= 50, avg=26.17, stdev= 8.85, samples=116 lat (usec) : 50=0.07%, 100=0.16%, 250=0.75%, 500=0.07%, 1000=0.26% lat (msec) : 2=0.49%, 4=5.44%, 10=15.01%, 20=38.02%, 50=37.83% lat (msec) : 100=1.86%, 250=0.03%, 750=0.03% cpu : usr=0.07%, sys=26.46%, ctx=10311, 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=178802: Tue Aug 11 17:52:20 2026 read: IOPS=25, BW=100KiB/s (103kB/s)(6052KiB/60453msec) clat (usec): min=30, max=107673, avg=21420.41, stdev=12347.25 lat (usec): min=31, max=107673, avg=21421.13, stdev=12347.32 clat percentiles (usec): | 1.00th=[ 123], 5.00th=[ 8717], 10.00th=[ 10028], 20.00th=[ 12387], | 30.00th=[ 14353], 40.00th=[ 16450], 50.00th=[ 18744], 60.00th=[ 21365], | 70.00th=[ 24249], 80.00th=[ 28705], 90.00th=[ 36439], 95.00th=[ 44303], | 99.00th=[ 66847], 99.50th=[ 74974], 99.90th=[103285], 99.95th=[107480], | 99.99th=[107480] bw ( KiB/s): min= 39, max= 166, per=25.38%, avg=100.76, stdev=29.41, samples=119 iops : min= 9, max= 41, avg=24.76, stdev= 7.40, samples=119 write: IOPS=25, BW=103KiB/s (106kB/s)(6236KiB/60453msec); 0 zone resets clat (usec): min=844, max=673759, avg=17838.55, stdev=20762.51 lat (usec): min=845, max=673761, avg=17839.35, stdev=20762.56 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 3261], 10.00th=[ 3785], 20.00th=[ 5669], | 30.00th=[ 9503], 40.00th=[ 12387], 50.00th=[ 14877], 60.00th=[ 18220], | 70.00th=[ 21890], 80.00th=[ 26870], 90.00th=[ 34341], 95.00th=[ 40633], | 99.00th=[ 58459], 99.50th=[ 64226], 99.90th=[ 79168], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 31, max= 191, per=24.99%, avg=103.72, stdev=34.65, samples=119 iops : min= 7, max= 47, avg=25.50, stdev= 8.72, samples=119 lat (usec) : 50=0.03%, 100=0.16%, 250=0.81%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=0.55%, 4=5.37%, 10=13.83%, 20=39.00%, 50=37.53% lat (msec) : 100=2.34%, 250=0.07%, 750=0.03% cpu : usr=0.09%, sys=26.25%, ctx=10504, 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=397KiB/s (407kB/s), 98.5KiB/s-102KiB/s (101kB/s-104kB/s), io=23.4MiB (24.6MB), run=59174-60453msec WRITE: bw=416KiB/s (426kB/s), 103KiB/s-106KiB/s (106kB/s-108kB/s), io=24.6MiB (25.7MB), run=59174-60453msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178794: Tue Aug 11 17:52:28 2026 read: IOPS=21, BW=87.7KiB/s (89.8kB/s)(5992KiB/68295msec) clat (msec): min=3, max=710, avg=20.33, stdev=23.10 lat (msec): min=3, max=710, avg=20.33, stdev=23.10 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 41], 95.00th=[ 52], | 99.00th=[ 72], 99.50th=[ 75], 99.90th=[ 95], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 24, max= 304, per=24.98%, avg=87.67, stdev=53.84, samples=134 iops : min= 6, max= 76, avg=21.54, stdev=13.57, samples=134 write: IOPS=23, BW=92.2KiB/s (94.4kB/s)(6296KiB/68295msec); 0 zone resets clat (msec): min=5, max=109, avg=23.85, stdev=15.19 lat (msec): min=5, max=109, avg=23.85, stdev=15.19 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 45], 95.00th=[ 53], | 99.00th=[ 73], 99.50th=[ 88], 99.90th=[ 95], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 23, max= 320, per=24.99%, avg=91.72, stdev=55.16, samples=134 iops : min= 5, max= 80, avg=22.55, stdev=13.91, samples=134 lat (msec) : 4=0.29%, 10=22.82%, 20=33.27%, 50=37.83%, 100=5.73% lat (msec) : 250=0.03%, 750=0.03% cpu : usr=0.06%, sys=15.33%, ctx=6959, 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=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=178795: Tue Aug 11 17:52:28 2026 read: IOPS=21, BW=87.0KiB/s (89.1kB/s)(5940KiB/68248msec) clat (msec): min=3, max=661, avg=19.87, stdev=22.07 lat (msec): min=3, max=661, avg=19.87, stdev=22.07 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 42], 95.00th=[ 50], | 99.00th=[ 68], 99.50th=[ 74], 99.90th=[ 93], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7, max= 320, per=24.81%, avg=87.07, stdev=57.12, samples=134 iops : min= 1, max= 80, avg=21.39, stdev=14.39, samples=134 write: IOPS=23, BW=93.0KiB/s (95.2kB/s)(6348KiB/68248msec); 0 zone resets clat (msec): min=5, max=137, avg=24.22, stdev=16.61 lat (msec): min=5, max=137, avg=24.22, stdev=16.61 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 37], 90.00th=[ 46], 95.00th=[ 58], | 99.00th=[ 81], 99.50th=[ 90], 99.90th=[ 121], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 31, max= 304, per=25.24%, avg=92.63, stdev=56.00, samples=134 iops : min= 7, max= 76, avg=22.78, stdev=14.13, samples=134 lat (msec) : 4=0.23%, 10=24.38%, 20=32.88%, 50=36.20%, 100=6.15% lat (msec) : 250=0.13%, 750=0.03% cpu : usr=0.08%, sys=15.17%, ctx=7113, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178796: Tue Aug 11 17:52:28 2026 read: IOPS=22, BW=88.3KiB/s (90.4kB/s)(6028KiB/68288msec) clat (msec): min=2, max=148, avg=19.71, stdev=14.64 lat (msec): min=2, max=148, avg=19.71, stdev=14.64 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 31], 90.00th=[ 41], 95.00th=[ 48], | 99.00th=[ 69], 99.50th=[ 72], 99.90th=[ 102], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 23, max= 320, per=25.13%, avg=88.21, stdev=58.09, samples=134 iops : min= 5, max= 80, avg=21.67, stdev=14.62, samples=134 write: IOPS=22, BW=91.7KiB/s (93.9kB/s)(6260KiB/68288msec); 0 zone resets clat (msec): min=4, max=662, avg=24.46, stdev=22.60 lat (msec): min=4, max=662, avg=24.46, stdev=22.60 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 45], 95.00th=[ 55], | 99.00th=[ 78], 99.50th=[ 92], 99.90th=[ 108], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 31, max= 264, per=24.88%, avg=91.31, stdev=52.94, samples=134 iops : min= 7, max= 66, avg=22.45, stdev=13.37, samples=134 lat (msec) : 4=0.29%, 10=24.28%, 20=32.19%, 50=37.37%, 100=5.63% lat (msec) : 250=0.20%, 750=0.03% cpu : usr=0.08%, sys=15.37%, ctx=7094, 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=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=178797: Tue Aug 11 17:52:28 2026 read: IOPS=22, BW=88.5KiB/s (90.7kB/s)(6052KiB/68346msec) clat (msec): min=2, max=146, avg=20.38, stdev=15.57 lat (msec): min=2, max=146, avg=20.38, stdev=15.57 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 20], | 70.00th=[ 25], 80.00th=[ 32], 90.00th=[ 42], 95.00th=[ 51], | 99.00th=[ 73], 99.50th=[ 86], 99.90th=[ 112], 99.95th=[ 146], | 99.99th=[ 146] bw ( KiB/s): min= 15, max= 304, per=25.36%, avg=89.03, stdev=56.04, samples=135 iops : min= 3, max= 76, avg=21.88, stdev=14.12, samples=135 write: IOPS=22, BW=91.2KiB/s (93.4kB/s)(6236KiB/68346msec); 0 zone resets clat (msec): min=4, max=663, avg=23.87, stdev=22.61 lat (msec): min=4, max=663, avg=23.87, stdev=22.61 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 35], 90.00th=[ 45], 95.00th=[ 55], | 99.00th=[ 77], 99.50th=[ 94], 99.90th=[ 140], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 31, max= 304, per=24.95%, avg=91.58, stdev=56.90, samples=135 iops : min= 7, max= 76, avg=22.52, stdev=14.35, samples=135 lat (msec) : 4=0.42%, 10=24.02%, 20=32.32%, 50=37.43%, 100=5.57% lat (msec) : 250=0.20%, 750=0.03% cpu : usr=0.08%, sys=15.31%, ctx=7079, 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=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=351KiB/s (360kB/s), 87.0KiB/s-88.5KiB/s (89.1kB/s-90.7kB/s), io=23.4MiB (24.6MB), run=68248-68346msec WRITE: bw=368KiB/s (377kB/s), 91.2KiB/s-93.0KiB/s (93.4kB/s-95.2kB/s), io=24.6MiB (25.7MB), run=68248-68346msec 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=178829: Tue Aug 11 17:52:55 2026 read: IOPS=17, BW=287KiB/s (294kB/s)(5920KiB/20622msec) clat (usec): min=104, max=108076, avg=27745.82, stdev=14772.87 lat (usec): min=104, max=108076, avg=27746.80, stdev=14773.19 clat percentiles (usec): | 1.00th=[ 133], 5.00th=[ 10683], 10.00th=[ 13173], 20.00th=[ 16712], | 30.00th=[ 19006], 40.00th=[ 22414], 50.00th=[ 25822], 60.00th=[ 28967], | 70.00th=[ 32637], 80.00th=[ 37487], 90.00th=[ 44827], 95.00th=[ 52167], | 99.00th=[ 87557], 99.50th=[ 95945], 99.90th=[108528], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 125, max= 576, per=24.78%, avg=287.17, stdev=101.07, samples=41 iops : min= 7, max= 36, avg=17.39, stdev= 6.45, samples=41 write: IOPS=19, BW=309KiB/s (316kB/s)(6368KiB/20622msec); 0 zone resets clat (usec): min=1696, max=92459, avg=25732.65, stdev=16855.13 lat (usec): min=1698, max=92460, avg=25734.14, stdev=16855.27 clat percentiles (usec): | 1.00th=[ 4621], 5.00th=[ 6718], 10.00th=[ 8717], 20.00th=[11469], | 30.00th=[15270], 40.00th=[17695], 50.00th=[21365], 60.00th=[25560], | 70.00th=[30278], 80.00th=[36963], 90.00th=[47973], 95.00th=[60556], | 99.00th=[83362], 99.50th=[90702], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 127, max= 574, per=25.28%, avg=308.22, stdev=99.22, samples=41 iops : min= 7, max= 35, avg=18.71, stdev= 6.26, samples=41 lat (usec) : 250=1.43%, 500=0.39% lat (msec) : 2=0.13%, 4=0.26%, 10=7.68%, 20=29.43%, 50=53.13% lat (msec) : 100=7.42%, 250=0.13% cpu : usr=0.07%, sys=28.65%, ctx=3321, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178831: Tue Aug 11 17:52:55 2026 read: IOPS=17, BW=278KiB/s (285kB/s)(5744KiB/20657msec) clat (usec): min=106, max=95793, avg=28419.46, stdev=15042.90 lat (usec): min=107, max=95794, avg=28420.30, stdev=15042.96 clat percentiles (usec): | 1.00th=[ 133], 5.00th=[ 9765], 10.00th=[13304], 20.00th=[16712], | 30.00th=[19268], 40.00th=[22938], 50.00th=[25822], 60.00th=[29492], | 70.00th=[33162], 80.00th=[40109], 90.00th=[46924], 95.00th=[57410], | 99.00th=[71828], 99.50th=[89654], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 62, max= 510, per=24.06%, avg=278.90, stdev=108.31, samples=41 iops : min= 3, max= 31, avg=16.88, stdev= 6.79, samples=41 write: IOPS=19, BW=317KiB/s (324kB/s)(6544KiB/20657msec); 0 zone resets clat (usec): min=1684, max=155264, avg=25312.65, stdev=17387.39 lat (usec): min=1685, max=155266, avg=25316.02, stdev=17388.01 clat percentiles (usec): | 1.00th=[ 1958], 5.00th=[ 5800], 10.00th=[ 7111], 20.00th=[ 11600], | 30.00th=[ 14353], 40.00th=[ 17695], 50.00th=[ 20841], 60.00th=[ 25560], | 70.00th=[ 31065], 80.00th=[ 38011], 90.00th=[ 47449], 95.00th=[ 55837], | 99.00th=[ 88605], 99.50th=[ 92799], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 95, max= 576, per=25.92%, avg=316.00, stdev=108.83, samples=41 iops : min= 5, max= 36, avg=19.20, stdev= 6.93, samples=41 lat (usec) : 250=1.30%, 500=0.52% lat (msec) : 2=0.65%, 4=0.26%, 10=7.68%, 20=29.43%, 50=51.95% lat (msec) : 100=8.07%, 250=0.13% cpu : usr=0.08%, sys=28.69%, ctx=3429, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178834: Tue Aug 11 17:52:55 2026 read: IOPS=19, BW=310KiB/s (317kB/s)(6256KiB/20188msec) clat (usec): min=60, max=84091, avg=27585.14, stdev=14293.14 lat (usec): min=61, max=84092, avg=27611.24, stdev=14323.56 clat percentiles (usec): | 1.00th=[ 131], 5.00th=[ 9765], 10.00th=[12911], 20.00th=[16188], | 30.00th=[19006], 40.00th=[22152], 50.00th=[25297], 60.00th=[28705], | 70.00th=[32637], 80.00th=[39060], 90.00th=[47449], 95.00th=[51643], | 99.00th=[70779], 99.50th=[83362], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 127, max= 544, per=26.83%, avg=311.00, stdev=96.85, samples=40 iops : min= 7, max= 34, avg=18.87, stdev= 6.02, samples=40 write: IOPS=18, BW=299KiB/s (306kB/s)(6032KiB/20188msec); 0 zone resets clat (usec): min=1400, max=97336, avg=24831.89, stdev=15724.50 lat (usec): min=1402, max=97339, avg=24833.47, stdev=15724.56 clat percentiles (usec): | 1.00th=[ 3785], 5.00th=[ 5473], 10.00th=[ 7439], 20.00th=[11731], | 30.00th=[14746], 40.00th=[17957], 50.00th=[22152], 60.00th=[25822], | 70.00th=[30278], 80.00th=[36439], 90.00th=[46400], 95.00th=[55313], | 99.00th=[76022], 99.50th=[84411], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 126, max= 542, per=24.33%, avg=296.62, stdev=102.94, samples=40 iops : min= 7, max= 33, avg=17.98, stdev= 6.58, samples=40 lat (usec) : 100=0.13%, 250=1.30%, 500=0.52% lat (msec) : 2=0.26%, 4=0.39%, 10=8.33%, 20=27.99%, 50=53.26% lat (msec) : 100=7.81% cpu : usr=0.05%, sys=28.87%, ctx=3359, 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=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=178835: Tue Aug 11 17:52:55 2026 read: IOPS=19, BW=310KiB/s (317kB/s)(6032KiB/19477msec) clat (usec): min=60, max=91053, avg=27358.53, stdev=15262.02 lat (usec): min=60, max=91055, avg=27360.04, stdev=15261.82 clat percentiles (usec): | 1.00th=[ 114], 5.00th=[ 260], 10.00th=[11994], 20.00th=[15795], | 30.00th=[19268], 40.00th=[22676], 50.00th=[25560], 60.00th=[28443], | 70.00th=[32113], 80.00th=[38011], 90.00th=[45351], 95.00th=[55837], | 99.00th=[81265], 99.50th=[90702], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 157, max= 512, per=26.68%, avg=309.24, stdev=92.82, samples=38 iops : min= 9, max= 32, avg=18.76, stdev= 5.92, samples=38 write: IOPS=20, BW=321KiB/s (329kB/s)(6256KiB/19477msec); 0 zone resets clat (usec): min=1321, max=89441, avg=23199.30, stdev=15425.98 lat (usec): min=1322, max=89443, avg=23200.75, stdev=15426.03 clat percentiles (usec): | 1.00th=[ 2311], 5.00th=[ 5800], 10.00th=[ 7767], 20.00th=[10290], | 30.00th=[12780], 40.00th=[15533], 50.00th=[19792], 60.00th=[23725], | 70.00th=[26870], 80.00th=[34866], 90.00th=[45351], 95.00th=[55837], | 99.00th=[70779], 99.50th=[81265], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 95, max= 574, per=26.53%, avg=323.34, stdev=104.94, samples=38 iops : min= 5, max= 35, avg=19.63, stdev= 6.57, samples=38 lat (usec) : 100=0.13%, 250=2.21%, 500=0.52% lat (msec) : 2=0.39%, 4=0.39%, 10=9.11%, 20=28.52%, 50=51.30% lat (msec) : 100=7.42% cpu : usr=0.09%, sys=29.62%, ctx=3355, 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=1160KiB/s (1187kB/s), 278KiB/s-310KiB/s (285kB/s-317kB/s), io=23.4MiB (24.5MB), run=19477-20657msec WRITE: bw=1220KiB/s (1249kB/s), 299KiB/s-321KiB/s (306kB/s-329kB/s), io=24.6MiB (25.8MB), run=19477-20657msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178828: Tue Aug 11 17:52:58 2026 read: IOPS=16, BW=257KiB/s (263kB/s)(5920KiB/23064msec) clat (msec): min=4, max=136, avg=27.15, stdev=19.26 lat (msec): min=4, max=136, avg=27.15, stdev=19.26 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 43], 90.00th=[ 55], 95.00th=[ 67], | 99.00th=[ 85], 99.50th=[ 115], 99.90th=[ 136], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 32, max= 608, per=24.24%, avg=250.67, stdev=128.78, samples=45 iops : min= 2, max= 38, avg=14.98, stdev= 8.20, samples=45 write: IOPS=17, BW=276KiB/s (283kB/s)(6368KiB/23064msec); 0 zone resets clat (msec): min=7, max=127, avg=32.48, stdev=20.76 lat (msec): min=7, max=127, avg=32.49, stdev=20.76 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 48], 90.00th=[ 62], 95.00th=[ 74], | 99.00th=[ 103], 99.50th=[ 111], 99.90th=[ 128], 99.95th=[ 128], | 99.99th=[ 128] bw ( KiB/s): min= 63, max= 896, per=25.08%, avg=272.87, stdev=137.35, samples=45 iops : min= 3, max= 56, avg=16.38, stdev= 8.75, samples=45 lat (msec) : 10=6.25%, 20=36.33%, 50=41.80%, 100=14.84%, 250=0.78% cpu : usr=0.07%, sys=14.89%, ctx=2106, 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=178830: Tue Aug 11 17:52:58 2026 read: IOPS=15, BW=248KiB/s (254kB/s)(5744KiB/23146msec) clat (msec): min=3, max=134, avg=27.60, stdev=19.35 lat (msec): min=3, max=134, avg=27.60, stdev=19.35 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 40], 90.00th=[ 56], 95.00th=[ 72], | 99.00th=[ 91], 99.50th=[ 93], 99.90th=[ 136], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 31, max= 544, per=23.58%, avg=243.82, stdev=109.44, samples=45 iops : min= 1, max= 34, avg=14.56, stdev= 6.98, samples=45 write: IOPS=17, BW=283KiB/s (290kB/s)(6544KiB/23146msec); 0 zone resets clat (msec): min=5, max=122, avg=32.26, stdev=21.28 lat (msec): min=5, max=122, avg=32.26, stdev=21.28 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 47], 90.00th=[ 64], 95.00th=[ 79], | 99.00th=[ 106], 99.50th=[ 120], 99.90th=[ 124], 99.95th=[ 124], | 99.99th=[ 124] bw ( KiB/s): min= 63, max= 1024, per=25.18%, avg=273.96, stdev=157.58, samples=45 iops : min= 3, max= 64, avg=16.44, stdev=10.01, samples=45 lat (msec) : 4=0.13%, 10=6.90%, 20=31.64%, 50=46.48%, 100=13.93% lat (msec) : 250=0.91% cpu : usr=0.07%, sys=15.17%, ctx=2002, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178832: Tue Aug 11 17:52:58 2026 read: IOPS=16, BW=271KiB/s (277kB/s)(6256KiB/23120msec) clat (usec): min=5169, max=99313, avg=27202.82, stdev=18545.43 lat (usec): min=5170, max=99313, avg=27203.63, stdev=18545.46 clat percentiles (usec): | 1.00th=[ 6194], 5.00th=[ 8160], 10.00th=[ 9765], 20.00th=[11863], | 30.00th=[15139], 40.00th=[18482], 50.00th=[21890], 60.00th=[25297], | 70.00th=[30802], 80.00th=[38536], 90.00th=[55313], 95.00th=[65799], | 99.00th=[90702], 99.50th=[94897], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 127, max= 768, per=25.91%, avg=267.89, stdev=145.93, samples=45 iops : min= 7, max= 48, avg=16.07, stdev= 9.29, samples=45 write: IOPS=16, BW=261KiB/s (267kB/s)(6032KiB/23120msec); 0 zone resets clat (msec): min=6, max=127, avg=32.84, stdev=21.97 lat (msec): min=6, max=127, avg=32.85, stdev=21.97 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 49], 90.00th=[ 65], 95.00th=[ 79], | 99.00th=[ 108], 99.50th=[ 115], 99.90th=[ 128], 99.95th=[ 128], | 99.99th=[ 128] bw ( KiB/s): min= 95, max= 768, per=23.11%, avg=251.49, stdev=122.71, samples=45 iops : min= 5, max= 48, avg=15.02, stdev= 7.84, samples=45 lat (msec) : 10=8.20%, 20=31.51%, 50=44.14%, 100=15.49%, 250=0.65% cpu : usr=0.09%, sys=14.95%, ctx=2100, 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=178833: Tue Aug 11 17:52:58 2026 read: IOPS=16, BW=261KiB/s (267kB/s)(6032KiB/23124msec) clat (usec): min=4535, max=94634, avg=26180.10, stdev=18299.67 lat (usec): min=4535, max=94635, avg=26180.85, stdev=18299.69 clat percentiles (usec): | 1.00th=[ 5080], 5.00th=[ 7177], 10.00th=[ 8979], 20.00th=[11863], | 30.00th=[14615], 40.00th=[18220], 50.00th=[20579], 60.00th=[23462], | 70.00th=[28967], 80.00th=[37487], 90.00th=[54264], 95.00th=[66847], | 99.00th=[83362], 99.50th=[93848], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 63, max= 832, per=24.47%, avg=253.02, stdev=148.04, samples=45 iops : min= 3, max= 52, avg=15.11, stdev= 9.44, samples=45 write: IOPS=16, BW=271KiB/s (277kB/s)(6256KiB/23124msec); 0 zone resets clat (msec): min=7, max=122, avg=33.55, stdev=21.82 lat (msec): min=7, max=122, avg=33.55, stdev=21.82 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 39], 80.00th=[ 48], 90.00th=[ 68], 95.00th=[ 80], | 99.00th=[ 108], 99.50th=[ 118], 99.90th=[ 123], 99.95th=[ 123], | 99.99th=[ 123] bw ( KiB/s): min= 95, max= 704, per=24.29%, avg=264.27, stdev=113.41, samples=45 iops : min= 5, max= 44, avg=15.82, stdev= 7.22, samples=45 lat (msec) : 10=8.33%, 20=31.51%, 50=44.92%, 100=14.19%, 250=1.04% cpu : usr=0.06%, sys=15.00%, ctx=2119, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1035KiB/s (1060kB/s), 248KiB/s-271KiB/s (254kB/s-277kB/s), io=23.4MiB (24.5MB), run=23064-23146msec WRITE: bw=1089KiB/s (1115kB/s), 261KiB/s-283KiB/s (267kB/s-290kB/s), io=24.6MiB (25.8MB), run=23064-23146msec 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=178844: Tue Aug 11 17:53:09 2026 read: IOPS=1, BW=1679KiB/s (1720kB/s)(7168KiB/4268msec) clat (usec): min=842, max=306473, avg=202056.64, stdev=101472.63 lat (usec): min=844, max=306474, avg=202058.01, stdev=101472.42 clat percentiles (usec): | 1.00th=[ 840], 5.00th=[ 840], 10.00th=[ 840], 20.00th=[158335], | 30.00th=[198181], 40.00th=[198181], 50.00th=[225444], 60.00th=[246416], | 70.00th=[246416], 80.00th=[278922], 90.00th=[308282], 95.00th=[308282], | 99.00th=[308282], 99.50th=[308282], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 1976, max= 4096, per=59.86%, avg=2438.00, stdev=927.29, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 write: IOPS=1, BW=1200KiB/s (1228kB/s)(5120KiB/4268msec); 0 zone resets clat (msec): min=322, max=1006, avg=566.23, stdev=272.07 lat (msec): min=322, max=1006, avg=566.35, stdev=272.02 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 514], 60.00th=[ 514], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 1932, max= 4096, per=46.79%, avg=2668.00, stdev=1236.88, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (usec) : 1000=8.33% lat (msec) : 250=33.33%, 500=33.33%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=45.79%, ctx=893, 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=178846: Tue Aug 11 17:53:09 2026 read: IOPS=0, BW=407KiB/s (417kB/s)(2048KiB/5028msec) clat (usec): min=709, max=151201, avg=75955.42, stdev=106414.42 lat (usec): min=710, max=151205, avg=75957.56, stdev=106416.10 clat percentiles (usec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[152044], | 70.00th=[152044], 80.00th=[152044], 90.00th=[152044], 95.00th=[152044], | 99.00th=[152044], 99.50th=[152044], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 1367, max= 2048, per=41.92%, avg=1707.50, stdev=481.54, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=2037KiB/s (2085kB/s)(10.0MiB/5028msec); 0 zone resets clat (msec): min=41, max=1454, avg=476.14, stdev=409.30 lat (msec): min=41, max=1454, avg=476.27, stdev=409.32 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 96], | 30.00th=[ 100], 40.00th=[ 397], 50.00th=[ 401], 60.00th=[ 464], | 70.00th=[ 510], 80.00th=[ 634], 90.00th=[ 667], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 1932, max= 4096, per=41.27%, avg=2353.17, stdev=855.00, samples=6 iops : min= 1, max= 4, avg= 1.67, stdev= 1.21, samples=6 lat (usec) : 750=8.33% lat (msec) : 50=8.33%, 100=16.67%, 250=8.33%, 500=25.00%, 750=25.00% lat (msec) : 2000=8.33% cpu : usr=0.02%, sys=44.14%, ctx=491, 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=178849: Tue Aug 11 17:53:09 2026 read: IOPS=1, BW=1275KiB/s (1306kB/s)(6144KiB/4818msec) clat (msec): min=214, max=742, avg=376.67, stdev=188.37 lat (msec): min=214, max=742, avg=376.67, stdev=188.37 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 351], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1932, max= 2048, per=49.59%, avg=2019.60, stdev=49.72, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 write: IOPS=1, BW=1275KiB/s (1306kB/s)(6144KiB/4818msec); 0 zone resets clat (msec): min=270, max=560, avg=404.16, stdev=119.85 lat (msec): min=270, max=560, avg=404.23, stdev=119.85 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 472], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1372, max= 2048, per=33.71%, avg=1922.00, stdev=271.06, samples=6 iops : min= 1, max= 2, avg= 1.50, stdev= 0.55, samples=6 lat (msec) : 250=8.33%, 500=75.00%, 750=16.67% cpu : usr=0.00%, sys=47.15%, ctx=616, 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=178851: Tue Aug 11 17:53:09 2026 read: IOPS=1, BW=1064KiB/s (1089kB/s)(5120KiB/4814msec) clat (usec): min=490, max=441641, avg=203671.03, stdev=197497.53 lat (usec): min=491, max=441643, avg=203672.34, stdev=197497.71 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 490], | 30.00th=[ 578], 40.00th=[ 578], 50.00th=[250610], 60.00th=[250610], | 70.00th=[325059], 80.00th=[325059], 90.00th=[442500], 95.00th=[442500], | 99.00th=[442500], 99.50th=[442500], 99.90th=[442500], 99.95th=[442500], | 99.99th=[442500] bw ( KiB/s): min= 2043, max= 6083, per=99.75%, avg=4063.00, stdev=2856.71, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1489KiB/s (1525kB/s)(7168KiB/4814msec); 0 zone resets clat (msec): min=214, max=828, avg=533.00, stdev=215.17 lat (msec): min=214, max=828, avg=533.07, stdev=215.19 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 300], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 558], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 684], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1381, max= 2048, per=33.41%, avg=1905.00, stdev=261.26, samples=6 iops : min= 1, max= 2, avg= 1.50, stdev= 0.55, samples=6 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=8.33%, 500=33.33%, 750=33.33%, 1000=8.33% cpu : usr=0.02%, sys=39.85%, ctx=670, 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=4073KiB/s (4171kB/s), 407KiB/s-1679KiB/s (417kB/s-1720kB/s), io=20.0MiB (20.0MB), run=4268-5028msec WRITE: bw=5702KiB/s (5839kB/s), 1200KiB/s-2037KiB/s (1228kB/s-2085kB/s), io=28.0MiB (29.4MB), run=4268-5028msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178845: Tue Aug 11 17:53:09 2026 read: IOPS=1, BW=1759KiB/s (1801kB/s)(7168KiB/4076msec) clat (msec): min=57, max=614, avg=214.63, stdev=192.79 lat (msec): min=57, max=614, avg=214.63, stdev=192.79 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 63], | 30.00th=[ 100], 40.00th=[ 100], 50.00th=[ 190], 60.00th=[ 232], | 70.00th=[ 232], 80.00th=[ 249], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 2048, max= 6023, per=98.51%, avg=4055.67, stdev=1987.81, samples=3 iops : min= 2, max= 5, avg= 3.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1256KiB/s (1286kB/s)(5120KiB/4076msec); 0 zone resets clat (msec): min=100, max=982, avg=512.32, stdev=321.39 lat (msec): min=100, max=983, avg=512.42, stdev=321.41 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 101], | 30.00th=[ 418], 40.00th=[ 418], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 609], 80.00th=[ 609], 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= 1992, max= 3835, per=42.93%, avg=2474.50, stdev=907.29, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=19.24%, ctx=214, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178847: Tue Aug 11 17:53:09 2026 read: IOPS=0, BW=412KiB/s (422kB/s)(2048KiB/4974msec) clat (msec): min=54, max=191, avg=122.96, stdev=96.69 lat (msec): min=54, max=191, avg=122.96, stdev=96.69 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 55], | 30.00th=[ 55], 40.00th=[ 55], 50.00th=[ 55], 60.00th=[ 192], | 70.00th=[ 192], 80.00th=[ 192], 90.00th=[ 192], 95.00th=[ 192], | 99.00th=[ 192], 99.50th=[ 192], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 1367, max= 2048, per=41.47%, avg=1707.50, stdev=481.54, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2059KiB/s (2108kB/s)(10.0MiB/4974msec); 0 zone resets clat (msec): min=127, max=697, avg=471.24, stdev=184.41 lat (msec): min=127, max=697, avg=471.33, stdev=184.41 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 300], | 30.00th=[ 326], 40.00th=[ 376], 50.00th=[ 472], 60.00th=[ 542], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 659], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1367, max= 4096, per=37.93%, avg=2186.00, stdev=804.89, samples=8 iops : min= 1, max= 4, avg= 1.50, stdev= 1.07, samples=8 lat (msec) : 100=8.33%, 250=16.67%, 500=33.33%, 750=41.67% cpu : usr=0.02%, sys=21.88%, ctx=210, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178848: Tue Aug 11 17:53:09 2026 read: IOPS=1, BW=1419KiB/s (1453kB/s)(6144KiB/4331msec) clat (msec): min=108, max=794, avg=365.36, stdev=290.92 lat (msec): min=108, max=794, avg=365.36, stdev=290.92 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 253], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1917, max= 4096, per=61.23%, avg=2521.00, stdev=1051.53, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=1, BW=1419KiB/s (1453kB/s)(6144KiB/4331msec); 0 zone resets clat (msec): min=96, max=601, avg=350.20, stdev=194.17 lat (msec): min=96, max=601, avg=350.30, stdev=194.16 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 264], 50.00th=[ 264], 60.00th=[ 460], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 1992, max= 4047, per=43.87%, avg=2528.50, stdev=1012.60, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=14.78%, ctx=197, 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=178850: Tue Aug 11 17:53:09 2026 read: IOPS=1, BW=1309KiB/s (1341kB/s)(5120KiB/3911msec) clat (msec): min=135, max=847, avg=293.10, stdev=310.71 lat (msec): min=135, max=847, avg=293.11, stdev=310.71 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 148], 60.00th=[ 148], | 70.00th=[ 194], 80.00th=[ 194], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 3771, max= 4096, per=95.54%, avg=3933.50, stdev=229.81, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1833KiB/s (1877kB/s)(7168KiB/3911msec); 0 zone resets clat (msec): min=153, max=707, avg=341.61, stdev=191.05 lat (msec): min=153, max=707, avg=341.70, stdev=191.05 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 220], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 255], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 477], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1383, max= 4055, per=38.82%, avg=2237.50, stdev=925.45, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (msec) : 250=58.33%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=21.30%, ctx=215, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4117KiB/s (4216kB/s), 412KiB/s-1759KiB/s (422kB/s-1801kB/s), io=20.0MiB (20.0MB), run=3911-4974msec WRITE: bw=5764KiB/s (5903kB/s), 1256KiB/s-2059KiB/s (1286kB/s-2108kB/s), io=28.0MiB (29.4MB), run=3911-4974msec 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=178859: Tue Aug 11 17:53:18 2026 read: IOPS=1, BW=7420KiB/s (7598kB/s)(12.0MiB/1656msec) clat (msec): min=355, max=598, avg=495.36, stdev=125.55 lat (msec): min=355, max=598, avg=495.36, stdev=125.55 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 531], 50.00th=[ 531], 60.00th=[ 531], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 8078, max= 8192, per=100.00%, avg=8135.00, stdev=80.61, 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=21.87%, ctx=87, 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=178860: Tue Aug 11 17:53:18 2026 read: IOPS=0, BW=1858KiB/s (1902kB/s)(4096KiB/2205msec) clat (nsec): min=970907k, max=970907k, avg=970906973.00, stdev= 0.00 lat (nsec): min=970908k, max=970908k, avg=970907993.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 969], 5.00th=[ 969], 10.00th=[ 969], 20.00th=[ 969], | 30.00th=[ 969], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3715KiB/s (3804kB/s)(8192KiB/2205msec); 0 zone resets clat (msec): min=394, max=702, avg=548.37, stdev=218.24 lat (msec): min=394, max=702, avg=548.62, stdev=218.23 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 701], | 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] lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=14.47%, ctx=65, 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=178861: Tue Aug 11 17:53:18 2026 write: IOPS=1, BW=6015KiB/s (6159kB/s)(12.0MiB/2043msec); 0 zone resets clat (msec): min=164, max=1291, avg=637.04, stdev=585.32 lat (msec): min=164, max=1292, avg=637.34, stdev=585.35 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8000, max= 8000, per=53.84%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=17.53%, ctx=97, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178863: Tue Aug 11 17:53:18 2026 write: IOPS=1, BW=6767KiB/s (6929kB/s)(12.0MiB/1816msec); 0 zone resets clat (msec): min=169, max=1320, avg=567.38, stdev=652.89 lat (msec): min=170, max=1321, avg=567.69, stdev=652.91 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 211], 50.00th=[ 211], 60.00th=[ 211], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min=11669, max=11669, per=78.53%, avg=11669.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.06%, sys=18.62%, ctx=125, 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=7430KiB/s (7609kB/s), 1858KiB/s-7420KiB/s (1902kB/s-7598kB/s), io=16.0MiB (16.8MB), run=1656-2205msec WRITE: bw=14.5MiB/s (15.2MB/s), 3715KiB/s-6767KiB/s (3804kB/s-6929kB/s), io=32.0MiB (33.6MB), run=1816-2205msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178862: Tue Aug 11 17:53:18 2026 read: IOPS=1, BW=7953KiB/s (8144kB/s)(12.0MiB/1545msec) clat (msec): min=406, max=524, avg=475.03, stdev=61.46 lat (msec): min=406, max=524, avg=475.03, stdev=61.46 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 493], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 5769, max= 8192, per=70.73%, avg=6980.50, stdev=1713.32, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=49.35%, ctx=2714, 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=178864: Tue Aug 11 17:53:18 2026 read: IOPS=0, BW=2467KiB/s (2527kB/s)(4096KiB/1660msec) clat (nsec): min=501687k, max=501687k, avg=501687435.00, stdev= 0.00 lat (nsec): min=501690k, max=501690k, avg=501689961.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 502], | 70.00th=[ 502], 80.00th=[ 502], 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= 5818, max= 5818, per=58.95%, avg=5818.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4935KiB/s (5053kB/s)(8192KiB/1660msec); 0 zone resets clat (msec): min=317, max=733, avg=525.58, stdev=294.38 lat (msec): min=317, max=733, avg=525.79, stdev=294.30 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 8192, max= 8192, per=54.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=23.81%, ctx=966, 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=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=178865: Tue Aug 11 17:53:18 2026 write: IOPS=1, BW=5689KiB/s (5825kB/s)(12.0MiB/2160msec); 0 zone resets clat (msec): min=133, max=1544, avg=685.08, stdev=754.53 lat (msec): min=133, max=1544, avg=685.32, stdev=754.43 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8047, max= 8047, per=53.05%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.05%, sys=14.87%, ctx=88, 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=178866: Tue Aug 11 17:53:18 2026 write: IOPS=1, BW=6225KiB/s (6374kB/s)(12.0MiB/1974msec); 0 zone resets clat (msec): min=189, max=1353, avg=626.48, stdev=634.29 lat (msec): min=189, max=1354, avg=626.82, stdev=634.25 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min=11941, max=11941, per=78.71%, avg=11941.00, 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%, 2000=33.33% cpu : usr=0.00%, sys=15.41%, ctx=64, 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=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=9870KiB/s (10.1MB/s), 2467KiB/s-7953KiB/s (2527kB/s-8144kB/s), io=16.0MiB (16.8MB), run=1545-1660msec WRITE: bw=14.8MiB/s (15.5MB/s), 4935KiB/s-6225KiB/s (5053kB/s-6374kB/s), io=32.0MiB (33.6MB), run=1660-2160msec