== sanity test 398b: DIO and buffer IO race ============== 10:05:16 (1770649516) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.41186 s, 14.8 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=195834: Mon Feb 9 10:06:26 2026 read: IOPS=24, BW=99.3KiB/s (102kB/s)(5992KiB/60327msec) clat (usec): min=100, max=1269.7k, avg=21901.57, stdev=33894.41 lat (usec): min=101, max=1269.7k, avg=21902.24, stdev=33894.40 clat percentiles (usec): | 1.00th=[ 449], 5.00th=[ 8160], 10.00th=[ 9896], | 20.00th=[ 12387], 30.00th=[ 14746], 40.00th=[ 17433], | 50.00th=[ 19530], 60.00th=[ 21890], 70.00th=[ 25035], | 80.00th=[ 28705], 90.00th=[ 34866], 95.00th=[ 40109], | 99.00th=[ 54789], 99.50th=[ 62129], 99.90th=[ 73925], | 99.95th=[1266680], 99.99th=[1266680] bw ( KiB/s): min= 15, max= 192, per=25.16%, avg=99.65, stdev=32.89, samples=119 iops : min= 3, max= 48, avg=24.54, stdev= 8.32, samples=119 write: IOPS=26, BW=104KiB/s (107kB/s)(6296KiB/60327msec); 0 zone resets clat (usec): min=654, max=68473, avg=17349.30, stdev=12442.16 lat (usec): min=655, max=68474, avg=17350.05, stdev=12442.25 clat percentiles (usec): | 1.00th=[ 848], 5.00th=[ 2540], 10.00th=[ 3228], 20.00th=[ 5276], | 30.00th=[ 8717], 40.00th=[11994], 50.00th=[15401], 60.00th=[18744], | 70.00th=[22676], 80.00th=[27132], 90.00th=[34866], 95.00th=[41157], | 99.00th=[54264], 99.50th=[56886], 99.90th=[63177], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 16, max= 216, per=25.46%, avg=105.64, stdev=36.03, samples=118 iops : min= 4, max= 54, avg=26.04, stdev= 9.11, samples=118 lat (usec) : 250=0.10%, 500=0.46%, 750=0.49%, 1000=0.49% lat (msec) : 2=0.78%, 4=5.92%, 10=14.13%, 20=35.74%, 50=40.27% lat (msec) : 100=1.60%, 2000=0.03% cpu : usr=0.09%, sys=26.75%, ctx=10018, 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=195837: Mon Feb 9 10:06:26 2026 read: IOPS=24, BW=98.1KiB/s (100kB/s)(5940KiB/60549msec) clat (usec): min=243, max=1184.7k, avg=22086.80, stdev=31882.88 lat (usec): min=243, max=1184.7k, avg=22087.45, stdev=31882.93 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 8586], 10.00th=[ 10290], | 20.00th=[ 12780], 30.00th=[ 15270], 40.00th=[ 17433], | 50.00th=[ 19530], 60.00th=[ 22152], 70.00th=[ 25035], | 80.00th=[ 28443], 90.00th=[ 34866], 95.00th=[ 39584], | 99.00th=[ 55837], 99.50th=[ 60031], 99.90th=[ 84411], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 8, max= 176, per=25.00%, avg=98.99, stdev=30.60, samples=118 iops : min= 2, max= 44, avg=24.38, stdev= 7.73, samples=118 write: IOPS=26, BW=105KiB/s (107kB/s)(6348KiB/60549msec); 0 zone resets clat (usec): min=653, max=101455, avg=17346.04, stdev=12729.76 lat (usec): min=653, max=101456, avg=17346.69, stdev=12729.78 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 2802], 10.00th=[ 3425], 20.00th=[ 5800], | 30.00th=[ 8979], 40.00th=[ 11863], 50.00th=[ 14746], 60.00th=[ 17957], | 70.00th=[ 21890], 80.00th=[ 26870], 90.00th=[ 34866], 95.00th=[ 42206], | 99.00th=[ 55313], 99.50th=[ 63701], 99.90th=[ 84411], 99.95th=[101188], | 99.99th=[101188] bw ( KiB/s): min= 8, max= 200, per=25.35%, avg=105.22, stdev=33.00, samples=118 iops : min= 2, max= 50, avg=25.94, stdev= 8.30, samples=118 lat (usec) : 250=0.03%, 500=0.20%, 750=0.52%, 1000=0.36% lat (msec) : 2=0.81%, 4=4.92%, 10=14.62%, 20=37.70%, 50=39.10% lat (msec) : 100=1.69%, 250=0.03%, 2000=0.03% cpu : usr=0.05%, sys=26.92%, ctx=10058, 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=195839: Mon Feb 9 10:06:26 2026 read: IOPS=24, BW=99.6KiB/s (102kB/s)(6028KiB/60550msec) clat (usec): min=240, max=1190.7k, avg=22338.63, stdev=32227.64 lat (usec): min=241, max=1190.7k, avg=22339.27, stdev=32227.64 clat percentiles (usec): | 1.00th=[ 453], 5.00th=[ 7898], 10.00th=[ 9372], | 20.00th=[ 12256], 30.00th=[ 14615], 40.00th=[ 16909], | 50.00th=[ 19530], 60.00th=[ 22414], 70.00th=[ 25560], | 80.00th=[ 30016], 90.00th=[ 36439], 95.00th=[ 42730], | 99.00th=[ 59507], 99.50th=[ 69731], 99.90th=[ 95945], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 32, max= 184, per=25.44%, avg=100.75, stdev=32.36, samples=118 iops : min= 8, max= 46, avg=24.82, stdev= 8.20, samples=118 write: IOPS=25, BW=103KiB/s (106kB/s)(6260KiB/60550msec); 0 zone resets clat (usec): min=679, max=73025, avg=17048.21, stdev=12210.52 lat (usec): min=679, max=73026, avg=17051.34, stdev=12210.71 clat percentiles (usec): | 1.00th=[ 889], 5.00th=[ 2737], 10.00th=[ 3425], 20.00th=[ 5669], | 30.00th=[ 8717], 40.00th=[11863], 50.00th=[14746], 60.00th=[17695], | 70.00th=[21627], 80.00th=[26608], 90.00th=[34341], 95.00th=[39584], | 99.00th=[53216], 99.50th=[62129], 99.90th=[69731], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 8, max= 224, per=24.98%, avg=103.67, stdev=36.91, samples=119 iops : min= 2, max= 56, avg=25.55, stdev= 9.31, samples=119 lat (usec) : 250=0.07%, 500=0.46%, 750=0.46%, 1000=0.59% lat (msec) : 2=1.04%, 4=4.95%, 10=14.94%, 20=36.62%, 50=39.06% lat (msec) : 100=1.79%, 2000=0.03% cpu : usr=0.05%, sys=26.82%, ctx=10137, 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=195841: Mon Feb 9 10:06:26 2026 read: IOPS=25, BW=101KiB/s (103kB/s)(6052KiB/60096msec) clat (usec): min=98, max=76021, avg=21569.64, stdev=11137.60 lat (usec): min=98, max=76022, avg=21570.22, stdev=11137.63 clat percentiles (usec): | 1.00th=[ 453], 5.00th=[ 8094], 10.00th=[ 9765], 20.00th=[12387], | 30.00th=[14615], 40.00th=[17171], 50.00th=[19530], 60.00th=[22414], | 70.00th=[25822], 80.00th=[30540], 90.00th=[36439], 95.00th=[42730], | 99.00th=[54264], 99.50th=[60556], 99.90th=[72877], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 31, max= 176, per=25.65%, avg=101.56, stdev=30.29, samples=117 iops : min= 7, max= 44, avg=25.02, stdev= 7.64, samples=117 write: IOPS=25, BW=104KiB/s (106kB/s)(6236KiB/60096msec); 0 zone resets clat (usec): min=673, max=1184.5k, avg=17473.04, stdev=31897.07 lat (usec): min=674, max=1184.5k, avg=17473.71, stdev=31897.08 clat percentiles (usec): | 1.00th=[ 840], 5.00th=[ 2704], 10.00th=[ 3294], | 20.00th=[ 5407], 30.00th=[ 8717], 40.00th=[ 11600], | 50.00th=[ 14222], 60.00th=[ 17695], 70.00th=[ 21365], | 80.00th=[ 26608], 90.00th=[ 34341], 95.00th=[ 39584], | 99.00th=[ 52691], 99.50th=[ 56361], 99.90th=[ 66847], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 23, max= 208, per=25.08%, avg=104.08, stdev=35.64, samples=118 iops : min= 5, max= 52, avg=25.64, stdev= 9.03, samples=118 lat (usec) : 100=0.03%, 250=0.10%, 500=0.46%, 750=0.68%, 1000=0.46% lat (msec) : 2=0.72%, 4=5.73%, 10=15.17%, 20=36.10%, 50=38.90% lat (msec) : 100=1.63%, 2000=0.03% cpu : usr=0.08%, sys=26.88%, ctx=9990, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=397KiB/s (406kB/s), 98.1KiB/s-101KiB/s (100kB/s-103kB/s), io=23.4MiB (24.6MB), run=60096-60550msec WRITE: bw=415KiB/s (425kB/s), 103KiB/s-105KiB/s (106kB/s-107kB/s), io=24.6MiB (25.7MB), run=60096-60550msec rand-rw: (groupid=0, jobs=1): err= 0: pid=195835: Mon Feb 9 10:06:33 2026 read: IOPS=22, BW=88.7KiB/s (90.8kB/s)(5992KiB/67551msec) clat (msec): min=2, max=1269, avg=20.46, stdev=35.39 lat (msec): min=2, max=1269, avg=20.46, stdev=35.39 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 41], 95.00th=[ 50], | 99.00th=[ 70], 99.50th=[ 74], 99.90th=[ 96], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 23, max= 352, per=25.04%, avg=88.88, stdev=57.94, samples=132 iops : min= 5, max= 88, avg=21.79, stdev=14.60, samples=132 write: IOPS=23, BW=93.2KiB/s (95.4kB/s)(6296KiB/67551msec); 0 zone resets clat (msec): min=3, max=102, avg=23.31, stdev=15.67 lat (msec): min=3, max=102, avg=23.31, stdev=15.67 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 35], 90.00th=[ 45], 95.00th=[ 53], | 99.00th=[ 75], 99.50th=[ 87], 99.90th=[ 102], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 8, max= 344, per=25.02%, avg=93.06, stdev=59.48, samples=132 iops : min= 2, max= 86, avg=22.83, stdev=14.99, samples=132 lat (msec) : 4=1.20%, 10=24.09%, 20=32.36%, 50=36.78%, 100=5.47% lat (msec) : 250=0.07%, 2000=0.03% cpu : usr=0.06%, sys=13.27%, ctx=6263, 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=195836: Mon Feb 9 10:06:33 2026 read: IOPS=22, BW=88.9KiB/s (91.1kB/s)(5940KiB/66797msec) clat (msec): min=2, max=1182, avg=20.19, stdev=33.18 lat (msec): min=2, max=1182, avg=20.19, stdev=33.18 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 30], 90.00th=[ 41], 95.00th=[ 48], | 99.00th=[ 67], 99.50th=[ 72], 99.90th=[ 97], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8, max= 360, per=25.33%, avg=89.92, stdev=58.30, samples=131 iops : min= 2, max= 90, avg=22.05, stdev=14.71, samples=131 write: IOPS=23, BW=95.0KiB/s (97.3kB/s)(6348KiB/66797msec); 0 zone resets clat (msec): min=4, max=103, avg=23.07, stdev=14.68 lat (msec): min=4, max=103, avg=23.07, stdev=14.68 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 35], 90.00th=[ 43], 95.00th=[ 52], | 99.00th=[ 71], 99.50th=[ 79], 99.90th=[ 91], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 16, max= 336, per=25.80%, avg=95.96, stdev=56.72, samples=131 iops : min= 4, max= 84, avg=23.56, stdev=14.30, samples=131 lat (msec) : 4=0.59%, 10=23.73%, 20=33.56%, 50=37.27%, 100=4.79% lat (msec) : 250=0.03%, 2000=0.03% cpu : usr=0.07%, sys=13.61%, ctx=6273, 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=195838: Mon Feb 9 10:06:33 2026 read: IOPS=22, BW=89.4KiB/s (91.5kB/s)(6028KiB/67443msec) clat (usec): min=2906, max=95103, avg=19385.80, stdev=14422.72 lat (usec): min=2906, max=95103, avg=19386.42, stdev=14422.71 clat percentiles (usec): | 1.00th=[ 3720], 5.00th=[ 4686], 10.00th=[ 5473], 20.00th=[ 7111], | 30.00th=[10028], 40.00th=[12518], 50.00th=[15008], 60.00th=[18220], | 70.00th=[22938], 80.00th=[29492], 90.00th=[40109], 95.00th=[48497], | 99.00th=[65799], 99.50th=[73925], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 16, max= 360, per=25.32%, avg=89.89, stdev=61.04, samples=132 iops : min= 4, max= 90, avg=22.05, stdev=15.36, samples=132 write: IOPS=23, BW=92.8KiB/s (95.0kB/s)(6260KiB/67443msec); 0 zone resets clat (msec): min=3, max=1183, avg=24.30, stdev=33.06 lat (msec): min=3, max=1183, avg=24.30, stdev=33.06 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 53], | 99.00th=[ 70], 99.50th=[ 81], 99.90th=[ 103], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 24, max= 344, per=25.03%, avg=93.12, stdev=56.41, samples=132 iops : min= 6, max= 86, avg=22.85, stdev=14.24, samples=132 lat (msec) : 4=0.91%, 10=24.80%, 20=31.35%, 50=37.89%, 100=4.98% lat (msec) : 250=0.03%, 2000=0.03% cpu : usr=0.07%, sys=13.28%, ctx=6271, 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=195840: Mon Feb 9 10:06:33 2026 read: IOPS=22, BW=89.0KiB/s (92.1kB/s)(6052KiB/67281msec) clat (usec): min=2737, max=88631, avg=19426.75, stdev=14101.59 lat (usec): min=2737, max=88632, avg=19427.41, stdev=14101.55 clat percentiles (usec): | 1.00th=[ 4015], 5.00th=[ 4883], 10.00th=[ 5538], 20.00th=[ 7439], | 30.00th=[10421], 40.00th=[12780], 50.00th=[15401], 60.00th=[18220], | 70.00th=[22676], 80.00th=[28967], 90.00th=[40109], 95.00th=[49021], | 99.00th=[65274], 99.50th=[70779], 99.90th=[87557], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 23, max= 352, per=25.83%, avg=91.69, stdev=57.11, samples=131 iops : min= 5, max= 88, avg=22.49, stdev=14.41, samples=131 write: IOPS=23, BW=92.7KiB/s (94.9kB/s)(6236KiB/67281msec); 0 zone resets clat (msec): min=4, max=1182, avg=24.18, stdev=33.03 lat (msec): min=4, max=1182, avg=24.18, stdev=33.03 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 35], 90.00th=[ 44], 95.00th=[ 53], | 99.00th=[ 75], 99.50th=[ 83], 99.90th=[ 104], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 16, max= 344, per=25.18%, avg=93.66, stdev=58.75, samples=132 iops : min= 4, max= 86, avg=22.98, stdev=14.80, samples=132 lat (msec) : 4=0.49%, 10=24.22%, 20=32.39%, 50=37.40%, 100=5.40% lat (msec) : 250=0.07%, 2000=0.03% cpu : usr=0.06%, sys=13.27%, ctx=6216, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=355KiB/s (364kB/s), 88.7KiB/s-89.0KiB/s (90.8kB/s-92.1kB/s), io=23.4MiB (24.6MB), run=66797-67551msec WRITE: bw=372KiB/s (381kB/s), 92.7KiB/s-95.0KiB/s (94.9kB/s-97.3kB/s), io=24.6MiB (25.7MB), run=66797-67551msec 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=195863: Mon Feb 9 10:06:52 2026 read: IOPS=28, BW=459KiB/s (470kB/s)(5920KiB/12902msec) clat (usec): min=133, max=82932, avg=17534.67, stdev=9696.88 lat (usec): min=134, max=82934, avg=17535.14, stdev=9696.90 clat percentiles (usec): | 1.00th=[ 314], 5.00th=[ 461], 10.00th=[ 9110], 20.00th=[11076], | 30.00th=[12387], 40.00th=[14353], 50.00th=[15795], 60.00th=[17695], | 70.00th=[20055], 80.00th=[24249], 90.00th=[28705], 95.00th=[34866], | 99.00th=[48497], 99.50th=[54789], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 288, max= 640, per=25.18%, avg=455.92, stdev=90.23, samples=25 iops : min= 18, max= 40, avg=27.92, stdev= 5.77, samples=25 write: IOPS=30, BW=494KiB/s (505kB/s)(6368KiB/12902msec); 0 zone resets clat (usec): min=1033, max=66177, avg=15921.00, stdev=10901.93 lat (usec): min=1034, max=66178, avg=15922.06, stdev=10901.78 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 4015], 10.00th=[ 4817], 20.00th=[ 5866], | 30.00th=[ 8717], 40.00th=[11994], 50.00th=[13566], 60.00th=[15926], | 70.00th=[19006], 80.00th=[24773], 90.00th=[31327], 95.00th=[36439], | 99.00th=[56361], 99.50th=[58983], 99.90th=[66323], 99.95th=[66323], | 99.99th=[66323] bw ( KiB/s): min= 332, max= 862, per=26.02%, avg=495.60, stdev=119.62, samples=25 iops : min= 20, max= 53, avg=30.40, stdev= 7.45, samples=25 lat (usec) : 250=0.13%, 500=2.47%, 750=0.26% lat (msec) : 2=1.69%, 4=0.91%, 10=18.88%, 20=46.22%, 50=28.52% lat (msec) : 100=0.91% cpu : usr=0.08%, sys=28.08%, ctx=2667, 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=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=195864: Mon Feb 9 10:06:52 2026 read: IOPS=28, BW=450KiB/s (461kB/s)(5744KiB/12756msec) clat (usec): min=83, max=70933, avg=18079.35, stdev=9783.34 lat (usec): min=84, max=70933, avg=18079.82, stdev=9783.35 clat percentiles (usec): | 1.00th=[ 227], 5.00th=[ 482], 10.00th=[ 9503], 20.00th=[11207], | 30.00th=[13173], 40.00th=[14877], 50.00th=[16909], 60.00th=[18744], | 70.00th=[21365], 80.00th=[23462], 90.00th=[27919], 95.00th=[34866], | 99.00th=[57410], 99.50th=[68682], 99.90th=[70779], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 286, max= 704, per=24.82%, avg=449.44, stdev=99.78, samples=25 iops : min= 17, max= 44, avg=27.52, stdev= 6.19, samples=25 write: IOPS=32, BW=513KiB/s (525kB/s)(6544KiB/12756msec); 0 zone resets clat (usec): min=1002, max=60709, avg=15238.98, stdev=10501.68 lat (usec): min=1003, max=60709, avg=15239.87, stdev=10501.74 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 3556], 10.00th=[ 4293], 20.00th=[ 5669], | 30.00th=[ 8455], 40.00th=[10683], 50.00th=[12911], 60.00th=[15270], | 70.00th=[17695], 80.00th=[23200], 90.00th=[29754], 95.00th=[36439], | 99.00th=[46400], 99.50th=[54264], 99.90th=[60556], 99.95th=[60556], | 99.99th=[60556] bw ( KiB/s): min= 255, max= 758, per=26.87%, avg=511.92, stdev=117.43, samples=25 iops : min= 15, max= 47, avg=31.44, stdev= 7.48, samples=25 lat (usec) : 100=0.26%, 250=0.26%, 500=1.82%, 750=0.13% lat (msec) : 2=0.78%, 4=3.39%, 10=18.62%, 20=44.27%, 50=29.30% lat (msec) : 100=1.17% cpu : usr=0.05%, sys=28.52%, ctx=2743, 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=195865: Mon Feb 9 10:06:52 2026 read: IOPS=29, BW=473KiB/s (484kB/s)(6256KiB/13223msec) clat (usec): min=100, max=71601, avg=18439.82, stdev=9640.26 lat (usec): min=101, max=71601, avg=18440.31, stdev=9640.26 clat percentiles (usec): | 1.00th=[ 363], 5.00th=[ 6783], 10.00th=[ 9110], 20.00th=[11338], | 30.00th=[13173], 40.00th=[15008], 50.00th=[17171], 60.00th=[19268], | 70.00th=[21627], 80.00th=[24773], 90.00th=[28705], 95.00th=[36439], | 99.00th=[51119], 99.50th=[56886], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 319, max= 638, per=25.97%, avg=470.23, stdev=91.47, samples=26 iops : min= 19, max= 39, avg=28.85, stdev= 5.79, samples=26 write: IOPS=28, BW=456KiB/s (467kB/s)(6032KiB/13223msec); 0 zone resets clat (usec): min=1094, max=77079, avg=15765.91, stdev=11535.84 lat (usec): min=1095, max=77080, avg=15766.77, stdev=11535.84 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 3621], 10.00th=[ 4490], 20.00th=[ 5538], | 30.00th=[ 7767], 40.00th=[10421], 50.00th=[12911], 60.00th=[15795], | 70.00th=[19006], 80.00th=[24249], 90.00th=[30802], 95.00th=[40109], | 99.00th=[50594], 99.50th=[57410], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 222, max= 699, per=23.53%, avg=448.19, stdev=121.11, samples=26 iops : min= 13, max= 43, avg=27.46, stdev= 7.68, samples=26 lat (usec) : 250=0.13%, 500=1.43%, 750=0.39% lat (msec) : 2=1.04%, 4=2.21%, 10=19.40%, 20=42.19%, 50=32.16% lat (msec) : 100=1.04% cpu : usr=0.08%, sys=27.47%, ctx=2745, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195866: Mon Feb 9 10:06:52 2026 read: IOPS=29, BW=471KiB/s (482kB/s)(6032KiB/12815msec) clat (usec): min=83, max=63189, avg=17938.33, stdev=9549.96 lat (usec): min=84, max=63190, avg=17942.51, stdev=9558.85 clat percentiles (usec): | 1.00th=[ 285], 5.00th=[ 392], 10.00th=[ 8848], 20.00th=[11731], | 30.00th=[13042], 40.00th=[15139], 50.00th=[16909], 60.00th=[19006], | 70.00th=[21365], 80.00th=[23987], 90.00th=[28967], 95.00th=[34866], | 99.00th=[48497], 99.50th=[52167], 99.90th=[63177], 99.95th=[63177], | 99.99th=[63177] bw ( KiB/s): min= 287, max= 638, per=25.79%, avg=467.00, stdev=89.43, samples=25 iops : min= 17, max= 39, avg=28.60, stdev= 5.66, samples=25 write: IOPS=30, BW=488KiB/s (500kB/s)(6256KiB/12815msec); 0 zone resets clat (usec): min=1102, max=84688, avg=15245.87, stdev=11055.21 lat (usec): min=1103, max=84688, avg=15246.75, stdev=11055.22 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 3621], 10.00th=[ 4293], 20.00th=[ 5276], | 30.00th=[ 7177], 40.00th=[10290], 50.00th=[12518], 60.00th=[15008], | 70.00th=[19792], 80.00th=[24773], 90.00th=[29754], 95.00th=[35914], | 99.00th=[46400], 99.50th=[54789], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 351, max= 666, per=25.40%, avg=483.96, stdev=94.26, samples=25 iops : min= 21, max= 41, avg=29.68, stdev= 5.86, samples=25 lat (usec) : 100=0.26%, 250=0.13%, 500=2.86%, 750=0.65% lat (msec) : 2=1.43%, 4=2.86%, 10=17.32%, 20=42.58%, 50=31.25% lat (msec) : 100=0.65% cpu : usr=0.03%, sys=28.17%, ctx=2626, 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=1811KiB/s (1855kB/s), 450KiB/s-473KiB/s (461kB/s-484kB/s), io=23.4MiB (24.5MB), run=12756-13223msec WRITE: bw=1906KiB/s (1952kB/s), 456KiB/s-513KiB/s (467kB/s-525kB/s), io=24.6MiB (25.8MB), run=12756-13223msec rand-rw: (groupid=0, jobs=1): err= 0: pid=195867: Mon Feb 9 10:06:54 2026 read: IOPS=23, BW=376KiB/s (385kB/s)(5920KiB/15730msec) clat (usec): min=4318, max=67148, avg=18387.74, stdev=13067.16 lat (usec): min=4319, max=67149, avg=18388.33, stdev=13067.13 clat percentiles (usec): | 1.00th=[ 4817], 5.00th=[ 5997], 10.00th=[ 6718], 20.00th=[ 7963], | 30.00th=[ 9503], 40.00th=[11863], 50.00th=[13304], 60.00th=[15926], | 70.00th=[20317], 80.00th=[27657], 90.00th=[39060], 95.00th=[46924], | 99.00th=[58459], 99.50th=[64750], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 128, max= 1024, per=24.67%, avg=373.55, stdev=203.05, samples=31 iops : min= 8, max= 64, avg=23.06, stdev=12.72, samples=31 write: IOPS=25, BW=405KiB/s (415kB/s)(6368KiB/15730msec); 0 zone resets clat (usec): min=5266, max=85821, avg=22343.54, stdev=14094.96 lat (usec): min=5267, max=85822, avg=22344.79, stdev=14094.84 clat percentiles (usec): | 1.00th=[ 5669], 5.00th=[ 7177], 10.00th=[ 8455], 20.00th=[10552], | 30.00th=[12518], 40.00th=[15139], 50.00th=[18220], 60.00th=[21627], | 70.00th=[27395], 80.00th=[32900], 90.00th=[42206], 95.00th=[49546], | 99.00th=[74974], 99.50th=[84411], 99.90th=[85459], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 159, max= 928, per=25.41%, avg=404.77, stdev=184.27, samples=31 iops : min= 9, max= 58, avg=25.03, stdev=11.59, samples=31 lat (msec) : 10=24.35%, 20=37.76%, 50=33.98%, 100=3.91% cpu : usr=0.06%, sys=12.21%, ctx=1536, 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=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=195868: Mon Feb 9 10:06:54 2026 read: IOPS=22, BW=364KiB/s (373kB/s)(5744KiB/15779msec) clat (usec): min=3173, max=94418, avg=18246.96, stdev=12935.98 lat (usec): min=3174, max=94418, avg=18247.52, stdev=12935.97 clat percentiles (usec): | 1.00th=[ 4113], 5.00th=[ 5932], 10.00th=[ 6652], 20.00th=[ 8717], | 30.00th=[10028], 40.00th=[11863], 50.00th=[14222], 60.00th=[16712], | 70.00th=[19792], 80.00th=[25822], 90.00th=[38011], 95.00th=[44827], | 99.00th=[57934], 99.50th=[70779], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 160, max= 896, per=23.87%, avg=361.45, stdev=167.26, samples=31 iops : min= 10, max= 56, avg=22.32, stdev=10.51, samples=31 write: IOPS=25, BW=415KiB/s (425kB/s)(6544KiB/15779msec); 0 zone resets clat (usec): min=4189, max=92388, avg=22365.18, stdev=14849.25 lat (usec): min=4190, max=92388, avg=22366.51, stdev=14849.10 clat percentiles (usec): | 1.00th=[ 5800], 5.00th=[ 7308], 10.00th=[ 8455], 20.00th=[10290], | 30.00th=[12780], 40.00th=[15008], 50.00th=[17695], 60.00th=[21103], | 70.00th=[26346], 80.00th=[33817], 90.00th=[42206], 95.00th=[50070], | 99.00th=[74974], 99.50th=[84411], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 192, max= 992, per=25.74%, avg=409.97, stdev=194.55, samples=31 iops : min= 12, max= 62, avg=25.35, stdev=12.19, samples=31 lat (msec) : 4=0.39%, 10=22.66%, 20=40.62%, 50=32.29%, 100=4.04% cpu : usr=0.08%, sys=12.28%, ctx=1556, 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=195869: Mon Feb 9 10:06:54 2026 read: IOPS=24, BW=397KiB/s (407kB/s)(6256KiB/15744msec) clat (usec): min=4322, max=73236, avg=17732.81, stdev=12675.47 lat (usec): min=4323, max=73237, avg=17733.42, stdev=12675.49 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 5800], 10.00th=[ 6587], 20.00th=[ 8717], | 30.00th=[10159], 40.00th=[11994], 50.00th=[13698], 60.00th=[15664], | 70.00th=[18482], 80.00th=[23987], 90.00th=[37487], 95.00th=[47973], | 99.00th=[58459], 99.50th=[70779], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 128, max= 1056, per=26.31%, avg=398.32, stdev=219.26, samples=31 iops : min= 8, max= 66, avg=24.61, stdev=13.72, samples=31 write: IOPS=23, BW=383KiB/s (392kB/s)(6032KiB/15744msec); 0 zone resets clat (usec): min=5402, max=91537, avg=23118.62, stdev=15970.05 lat (usec): min=5403, max=91538, avg=23119.70, stdev=15970.06 clat percentiles (usec): | 1.00th=[ 5866], 5.00th=[ 7111], 10.00th=[ 7898], 20.00th=[ 9765], | 30.00th=[12256], 40.00th=[15008], 50.00th=[17695], 60.00th=[22152], | 70.00th=[27919], 80.00th=[36439], 90.00th=[45351], 95.00th=[53216], | 99.00th=[85459], 99.50th=[90702], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 160, max= 960, per=23.71%, avg=377.71, stdev=201.85, samples=31 iops : min= 10, max= 60, avg=23.32, stdev=12.72, samples=31 lat (msec) : 10=25.26%, 20=39.84%, 50=29.56%, 100=5.34% cpu : usr=0.05%, sys=12.45%, ctx=1514, 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=195870: Mon Feb 9 10:06:54 2026 read: IOPS=23, BW=381KiB/s (390kB/s)(6032KiB/15818msec) clat (usec): min=2789, max=83533, avg=18190.36, stdev=13281.50 lat (usec): min=2789, max=83533, avg=18190.95, stdev=13281.48 clat percentiles (usec): | 1.00th=[ 2966], 5.00th=[ 5407], 10.00th=[ 6652], 20.00th=[ 8455], | 30.00th=[10159], 40.00th=[11863], 50.00th=[14091], 60.00th=[16319], | 70.00th=[19530], 80.00th=[25560], 90.00th=[38011], 95.00th=[43779], | 99.00th=[66847], 99.50th=[70779], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 191, max= 864, per=24.48%, avg=370.58, stdev=171.59, samples=31 iops : min= 11, max= 54, avg=22.87, stdev=10.82, samples=31 write: IOPS=24, BW=395KiB/s (405kB/s)(6256KiB/15818msec); 0 zone resets clat (usec): min=3965, max=80385, avg=22645.72, stdev=14511.95 lat (usec): min=3967, max=80387, avg=22646.78, stdev=14511.94 clat percentiles (usec): | 1.00th=[ 5669], 5.00th=[ 7308], 10.00th=[ 8717], 20.00th=[10814], | 30.00th=[12649], 40.00th=[15008], 50.00th=[17957], 60.00th=[21627], | 70.00th=[26870], 80.00th=[34866], 90.00th=[43254], 95.00th=[50594], | 99.00th=[73925], 99.50th=[80217], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 159, max= 1024, per=24.47%, avg=389.87, stdev=178.80, samples=31 iops : min= 9, max= 64, avg=24.10, stdev=11.22, samples=31 lat (msec) : 4=0.91%, 10=21.22%, 20=41.93%, 50=31.38%, 100=4.56% cpu : usr=0.08%, sys=12.28%, ctx=1568, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1514KiB/s (1551kB/s), 364KiB/s-397KiB/s (373kB/s-407kB/s), io=23.4MiB (24.5MB), run=15730-15818msec WRITE: bw=1593KiB/s (1631kB/s), 383KiB/s-415KiB/s (392kB/s-425kB/s), io=24.6MiB (25.8MB), run=15730-15818msec 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=195879: Mon Feb 9 10:07:05 2026 read: IOPS=1, BW=1837KiB/s (1881kB/s)(7168KiB/3903msec) clat (usec): min=1173, max=313404, avg=173336.80, stdev=124137.27 lat (usec): min=1174, max=313405, avg=173338.02, stdev=124137.44 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1172], 10.00th=[ 1172], 20.00th=[ 9372], | 30.00th=[173016], 40.00th=[173016], 50.00th=[191890], 60.00th=[256902], | 70.00th=[256902], 80.00th=[270533], 90.00th=[312476], 95.00th=[312476], | 99.00th=[312476], 99.50th=[312476], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 1965, max= 4023, per=58.67%, avg=2425.40, stdev=893.78, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 write: IOPS=1, BW=1312KiB/s (1343kB/s)(5120KiB/3903msec); 0 zone resets clat (msec): min=411, max=874, avg=530.34, stdev=195.30 lat (msec): min=411, max=874, avg=530.40, stdev=195.32 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 414], 10.00th=[ 414], 20.00th=[ 414], | 30.00th=[ 414], 40.00th=[ 414], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1946, max= 2048, per=34.89%, avg=2019.00, stdev=48.81, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 2=8.33%, 10=8.33%, 250=16.67%, 500=58.33%, 1000=8.33% cpu : usr=0.00%, sys=49.54%, ctx=1247, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195880: Mon Feb 9 10:07:05 2026 read: IOPS=0, BW=413KiB/s (423kB/s)(2048KiB/4954msec) clat (msec): min=157, max=849, avg=503.31, stdev=489.21 lat (msec): min=157, max=849, avg=503.32, stdev=489.21 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 159], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 852], 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= 2007, max= 2027, per=48.79%, avg=2017.00, stdev=14.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2067KiB/s (2117kB/s)(10.0MiB/4954msec); 0 zone resets clat (msec): min=111, max=837, avg=393.27, stdev=244.31 lat (msec): min=111, max=837, avg=393.34, stdev=244.31 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 180], | 30.00th=[ 199], 40.00th=[ 218], 50.00th=[ 338], 60.00th=[ 363], | 70.00th=[ 393], 80.00th=[ 575], 90.00th=[ 718], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 1946, max= 2048, per=34.71%, avg=2008.43, stdev=39.77, samples=7 iops : min= 1, max= 2, avg= 1.14, stdev= 0.38, samples=7 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=44.38%, ctx=517, 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=195881: Mon Feb 9 10:07:05 2026 read: IOPS=1, BW=1370KiB/s (1402kB/s)(6144KiB/4486msec) clat (usec): min=1258, max=317650, avg=117658.07, stdev=118968.25 lat (usec): min=1260, max=317652, avg=117659.41, stdev=118968.11 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1254], 10.00th=[ 1254], 20.00th=[ 1385], | 30.00th=[ 1385], 40.00th=[ 96994], 50.00th=[ 96994], 60.00th=[113771], | 70.00th=[175113], 80.00th=[175113], 90.00th=[316670], 95.00th=[316670], | 99.00th=[316670], 99.50th=[316670], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 2048, max= 4096, per=82.43%, avg=3407.67, stdev=1177.54, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1370KiB/s (1402kB/s)(6144KiB/4486msec); 0 zone resets clat (msec): min=477, max=888, avg=621.07, stdev=156.72 lat (msec): min=477, max=888, avg=621.14, stdev=156.70 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 493], | 30.00th=[ 493], 40.00th=[ 531], 50.00th=[ 531], 60.00th=[ 659], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 1965, max= 2048, per=35.05%, avg=2028.60, stdev=35.75, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 2=16.67%, 100=8.33%, 250=16.67%, 500=25.00%, 750=25.00% lat (msec) : 1000=8.33% cpu : usr=0.00%, sys=40.54%, ctx=362, 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=195882: Mon Feb 9 10:07:05 2026 read: IOPS=1, BW=1350KiB/s (1382kB/s)(5120KiB/3793msec) clat (usec): min=1152, max=492133, avg=157719.63, stdev=225580.63 lat (usec): min=1153, max=492133, avg=157720.51, stdev=225580.60 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1156], 10.00th=[ 1156], 20.00th=[ 1156], | 30.00th=[ 1221], 40.00th=[ 1221], 50.00th=[ 1319], 60.00th=[ 1319], | 70.00th=[291505], 80.00th=[291505], 90.00th=[492831], 95.00th=[492831], | 99.00th=[492831], 99.50th=[492831], 99.90th=[492831], 99.95th=[492831], | 99.99th=[492831] bw ( KiB/s): min= 2048, max= 5896, per=96.08%, avg=3972.00, stdev=2720.95, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1890KiB/s (1935kB/s)(7168KiB/3793msec); 0 zone resets clat (msec): min=239, max=575, avg=421.40, stdev=115.53 lat (msec): min=239, max=575, avg=421.47, stdev=115.51 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 342], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 430], 60.00th=[ 485], | 70.00th=[ 485], 80.00th=[ 518], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1404, max= 4039, per=39.74%, avg=2300.00, stdev=1008.57, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 lat (msec) : 2=25.00%, 250=8.33%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=55.59%, ctx=226, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4134KiB/s (4233kB/s), 413KiB/s-1837KiB/s (423kB/s-1881kB/s), io=20.0MiB (20.0MB), run=3793-4954msec WRITE: bw=5788KiB/s (5927kB/s), 1312KiB/s-2067KiB/s (1343kB/s-2117kB/s), io=28.0MiB (29.4MB), run=3793-4954msec rand-rw: (groupid=0, jobs=1): err= 0: pid=195883: Mon Feb 9 10:07:05 2026 read: IOPS=1, BW=1559KiB/s (1596kB/s)(7168KiB/4599msec) clat (msec): min=47, max=880, avg=356.65, stdev=353.62 lat (msec): min=47, max=880, avg=356.66, stdev=353.62 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 81], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 211], 60.00th=[ 257], | 70.00th=[ 257], 80.00th=[ 844], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 2023, max= 2048, per=49.72%, avg=2043.00, stdev=10.00, samples=6 iops : min= 1, max= 2, avg= 1.67, stdev= 0.52, samples=6 write: IOPS=1, BW=1113KiB/s (1140kB/s)(5120KiB/4599msec); 0 zone resets clat (msec): min=166, max=638, avg=404.33, stdev=218.14 lat (msec): min=166, max=639, avg=404.41, stdev=218.14 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1831, max= 6144, per=58.07%, avg=3341.00, stdev=2429.89, samples=3 iops : min= 1, max= 6, avg= 3.00, stdev= 2.65, samples=3 lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=16.67%, 750=16.67% lat (msec) : 1000=16.67% cpu : usr=0.02%, sys=22.53%, ctx=517, 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=195884: Mon Feb 9 10:07:05 2026 read: IOPS=0, BW=411KiB/s (421kB/s)(2048KiB/4983msec) clat (msec): min=116, max=161, avg=138.96, stdev=32.12 lat (msec): min=116, max=161, avg=138.96, stdev=32.12 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 116], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 116], 60.00th=[ 163], | 70.00th=[ 163], 80.00th=[ 163], 90.00th=[ 163], 95.00th=[ 163], | 99.00th=[ 163], 99.50th=[ 163], 99.90th=[ 163], 99.95th=[ 163], | 99.99th=[ 163] bw ( KiB/s): min= 2031, max= 2048, per=49.63%, avg=2039.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2055KiB/s (2104kB/s)(10.0MiB/4983msec); 0 zone resets clat (msec): min=46, max=1296, avg=461.91, stdev=375.36 lat (msec): min=46, max=1296, avg=461.99, stdev=375.36 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 136], | 30.00th=[ 188], 40.00th=[ 330], 50.00th=[ 342], 60.00th=[ 426], | 70.00th=[ 477], 80.00th=[ 481], 90.00th=[ 894], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 2048, max= 3663, per=41.21%, avg=2371.00, stdev=722.25, samples=5 iops : min= 2, max= 3, avg= 2.20, stdev= 0.45, samples=5 lat (msec) : 50=8.33%, 250=33.33%, 500=41.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.02%, sys=22.90%, ctx=344, 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=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=195885: Mon Feb 9 10:07:05 2026 read: IOPS=1, BW=1300KiB/s (1331kB/s)(6144KiB/4726msec) clat (msec): min=57, max=838, avg=279.55, stdev=308.82 lat (msec): min=57, max=838, avg=279.55, stdev=308.82 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 65], | 30.00th=[ 65], 40.00th=[ 91], 50.00th=[ 91], 60.00th=[ 190], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 2048, max= 6144, per=83.07%, avg=3413.33, stdev=2364.83, samples=3 iops : min= 2, max= 6, avg= 3.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1300KiB/s (1331kB/s)(6144KiB/4726msec); 0 zone resets clat (msec): min=171, max=1253, avg=504.53, stdev=403.75 lat (msec): min=171, max=1253, avg=504.60, stdev=403.74 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 523], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 2000, max= 2048, per=35.41%, avg=2037.40, stdev=21.02, samples=5 iops : min= 1, max= 2, avg= 1.60, stdev= 0.55, samples=5 lat (msec) : 100=25.00%, 250=25.00%, 500=16.67%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=14.46%, ctx=127, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195886: Mon Feb 9 10:07:05 2026 read: IOPS=1, BW=1043KiB/s (1068kB/s)(5120KiB/4908msec) clat (msec): min=58, max=141, avg=98.16, stdev=37.87 lat (msec): min=58, max=141, avg=98.17, stdev=37.87 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 59], | 30.00th=[ 66], 40.00th=[ 66], 50.00th=[ 93], 60.00th=[ 93], | 70.00th=[ 133], 80.00th=[ 133], 90.00th=[ 142], 95.00th=[ 142], | 99.00th=[ 142], 99.50th=[ 142], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1460KiB/s (1496kB/s)(7168KiB/4908msec); 0 zone resets clat (msec): min=63, max=1365, avg=620.13, stdev=509.08 lat (msec): min=63, max=1365, avg=620.20, stdev=509.09 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 97], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 827], 60.00th=[ 877], | 70.00th=[ 877], 80.00th=[ 944], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 2043, max= 2048, per=35.58%, avg=2046.75, stdev= 2.50, samples=4 iops : min= 1, max= 2, avg= 1.75, stdev= 0.50, samples=4 lat (msec) : 100=41.67%, 250=25.00%, 1000=25.00%, 2000=8.33% cpu : usr=0.00%, sys=14.75%, ctx=170, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4110KiB/s (4209kB/s), 411KiB/s-1559KiB/s (421kB/s-1596kB/s), io=20.0MiB (20.0MB), run=4599-4983msec WRITE: bw=5754KiB/s (5892kB/s), 1113KiB/s-2055KiB/s (1140kB/s-2104kB/s), io=28.0MiB (29.4MB), run=4599-4983msec 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=195893: Mon Feb 9 10:07:16 2026 read: IOPS=1, BW=5461KiB/s (5592kB/s)(12.0MiB/2250msec) clat (msec): min=626, max=799, avg=738.52, stdev=97.10 lat (msec): min=626, max=799, avg=738.52, stdev=97.10 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 6150, max= 8175, per=100.00%, avg=7162.50, stdev=1431.89, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=55.09%, ctx=2802, 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=195895: Mon Feb 9 10:07:16 2026 read: IOPS=0, BW=1390KiB/s (1423kB/s)(4096KiB/2947msec) clat (nsec): min=614888k, max=614888k, avg=614888334.00, stdev= 0.00 lat (nsec): min=614889k, max=614889k, avg=614889349.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 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= 6196, max= 6196, per=100.00%, avg=6196.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2780KiB/s (2846kB/s)(8192KiB/2947msec); 0 zone resets clat (msec): min=928, max=1364, avg=1146.37, stdev=307.81 lat (msec): min=929, max=1364, avg=1146.73, stdev=307.83 clat percentiles (msec): | 1.00th=[ 927], 5.00th=[ 927], 10.00th=[ 927], 20.00th=[ 927], | 30.00th=[ 927], 40.00th=[ 927], 50.00th=[ 927], 60.00th=[ 1368], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7816, max= 7816, per=70.66%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=21.59%, ctx=977, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195898: Mon Feb 9 10:07:16 2026 write: IOPS=1, BW=4149KiB/s (4248kB/s)(12.0MiB/2962msec); 0 zone resets clat (msec): min=237, max=1923, avg=982.12, stdev=859.98 lat (msec): min=237, max=1923, avg=982.43, stdev=859.97 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 1921], 80.00th=[ 1921], 90.00th=[ 1921], 95.00th=[ 1921], | 99.00th=[ 1921], 99.50th=[ 1921], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 7816, max= 7816, per=70.66%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=15.70%, ctx=90, 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=195900: Mon Feb 9 10:07:16 2026 write: IOPS=1, BW=4398KiB/s (4504kB/s)(12.0MiB/2794msec); 0 zone resets clat (msec): min=366, max=1192, avg=914.30, stdev=474.38 lat (msec): min=366, max=1192, avg=914.62, stdev=474.40 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8175, max= 8175, per=73.90%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=19.01%, ctx=63, 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=5560KiB/s (5693kB/s), 1390KiB/s-5461KiB/s (1423kB/s-5592kB/s), io=16.0MiB (16.8MB), run=2250-2947msec WRITE: bw=10.8MiB/s (11.3MB/s), 2780KiB/s-4398KiB/s (2846kB/s-4504kB/s), io=32.0MiB (33.6MB), run=2794-2962msec rand-rw: (groupid=0, jobs=1): err= 0: pid=195894: Mon Feb 9 10:07:16 2026 read: IOPS=1, BW=4793KiB/s (4908kB/s)(12.0MiB/2564msec) clat (msec): min=648, max=1170, avg=846.53, stdev=282.77 lat (msec): min=648, max=1170, avg=846.53, stdev=282.77 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8094, max= 8192, per=100.00%, avg=8143.00, stdev=69.30, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.04%, sys=19.04%, ctx=129, 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=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=195896: Mon Feb 9 10:07:16 2026 read: IOPS=0, BW=1280KiB/s (1311kB/s)(4096KiB/3199msec) clat (nsec): min=1135.1M, max=1135.1M, avg=1135099021.00, stdev= 0.00 lat (nsec): min=1135.1M, max=1135.1M, avg=1135099989.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1133], 5.00th=[ 1133], 10.00th=[ 1133], 20.00th=[ 1133], | 30.00th=[ 1133], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] 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=2561KiB/s (2622kB/s)(8192KiB/3199msec); 0 zone resets clat (msec): min=489, max=1536, avg=1012.75, stdev=740.06 lat (msec): min=489, max=1536, avg=1013.11, stdev=739.99 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 489], 50.00th=[ 489], 60.00th=[ 1536], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8143, max= 8143, per=80.37%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=16.70%, ctx=97, 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=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=195897: Mon Feb 9 10:07:16 2026 write: IOPS=0, BW=3800KiB/s (3891kB/s)(12.0MiB/3234msec); 0 zone resets clat (msec): min=180, max=2222, avg=1066.26, stdev=1047.63 lat (msec): min=180, max=2222, avg=1066.60, stdev=1047.60 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 2232], 80.00th=[ 2232], 90.00th=[ 2232], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 8110, max= 8143, per=80.21%, avg=8126.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=10.21%, ctx=85, 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=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=195899: Mon Feb 9 10:07:16 2026 write: IOPS=1, BW=4888KiB/s (5005kB/s)(12.0MiB/2514msec); 0 zone resets clat (msec): min=467, max=1287, avg=828.06, stdev=419.10 lat (msec): min=467, max=1288, avg=828.33, stdev=419.03 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 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= 6177, max= 8192, per=70.91%, avg=7184.50, stdev=1424.82, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.04%, sys=21.65%, ctx=81, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=5122KiB/s (5245kB/s), 1280KiB/s-4793KiB/s (1311kB/s-4908kB/s), io=16.0MiB (16.8MB), run=2564-3199msec WRITE: bw=9.89MiB/s (10.4MB/s), 2561KiB/s-4888KiB/s (2622kB/s-5005kB/s), io=32.0MiB (33.6MB), run=2514-3234msec