== sanity test 398b: DIO and buffer IO race ============== 01:59:54 (1789711194) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.93236 s, 17.2 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=181539: Fri Sep 18 02:00:54 2026 read: IOPS=29, BW=118KiB/s (121kB/s)(5992KiB/50590msec) clat (usec): min=44, max=686087, avg=18394.54, stdev=19896.21 lat (usec): min=45, max=686087, avg=18395.20, stdev=19896.20 clat percentiles (usec): | 1.00th=[ 126], 5.00th=[ 7177], 10.00th=[ 8455], 20.00th=[ 10159], | 30.00th=[ 11863], 40.00th=[ 13829], 50.00th=[ 16450], 60.00th=[ 18482], | 70.00th=[ 20841], 80.00th=[ 24249], 90.00th=[ 29492], 95.00th=[ 36963], | 99.00th=[ 51119], 99.50th=[ 56361], 99.90th=[ 94897], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 6, max= 184, per=24.92%, avg=118.10, stdev=28.23, samples=100 iops : min= 1, max= 46, avg=29.21, stdev= 7.08, samples=100 write: IOPS=31, BW=124KiB/s (127kB/s)(6296KiB/50590msec); 0 zone resets clat (usec): min=678, max=76745, avg=14544.07, stdev=10977.83 lat (usec): min=679, max=76745, avg=14544.84, stdev=10977.86 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 2606], 10.00th=[ 3130], 20.00th=[ 4080], | 30.00th=[ 6915], 40.00th=[ 9896], 50.00th=[12256], 60.00th=[14746], | 70.00th=[18220], 80.00th=[23200], 90.00th=[29754], 95.00th=[35914], | 99.00th=[50070], 99.50th=[53740], 99.90th=[60031], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 39, max= 200, per=25.25%, avg=125.22, stdev=35.39, samples=99 iops : min= 9, max= 50, avg=30.99, stdev= 8.92, samples=99 lat (usec) : 50=0.03%, 100=0.16%, 250=0.72%, 500=0.03%, 750=0.13% lat (usec) : 1000=0.33% lat (msec) : 2=0.81%, 4=8.89%, 10=18.98%, 20=39.94%, 50=28.87% lat (msec) : 100=1.07%, 750=0.03% cpu : usr=0.10%, sys=25.59%, ctx=9156, 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=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=181540: Fri Sep 18 02:00:54 2026 read: IOPS=29, BW=120KiB/s (123kB/s)(5940KiB/49573msec) clat (usec): min=32, max=81370, avg=17922.69, stdev=9955.46 lat (usec): min=33, max=81371, avg=17923.40, stdev=9955.41 clat percentiles (usec): | 1.00th=[ 108], 5.00th=[ 6980], 10.00th=[ 8455], 20.00th=[10290], | 30.00th=[11863], 40.00th=[13698], 50.00th=[15926], 60.00th=[18220], | 70.00th=[20579], 80.00th=[24511], 90.00th=[30540], 95.00th=[35914], | 99.00th=[52691], 99.50th=[60556], 99.90th=[79168], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 6, max= 216, per=25.22%, avg=119.56, stdev=34.48, samples=98 iops : min= 1, max= 54, avg=29.57, stdev= 8.68, samples=98 write: IOPS=32, BW=128KiB/s (131kB/s)(6348KiB/49573msec); 0 zone resets clat (usec): min=700, max=682219, avg=14381.41, stdev=20069.26 lat (usec): min=701, max=682220, avg=14382.17, stdev=20069.26 clat percentiles (usec): | 1.00th=[ 1004], 5.00th=[ 2343], 10.00th=[ 2966], 20.00th=[ 3785], | 30.00th=[ 6325], 40.00th=[ 9241], 50.00th=[ 11600], 60.00th=[ 14091], | 70.00th=[ 17695], 80.00th=[ 21627], 90.00th=[ 28443], 95.00th=[ 35914], | 99.00th=[ 47449], 99.50th=[ 55837], 99.90th=[113771], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 32, max= 208, per=25.92%, avg=128.56, stdev=35.21, samples=97 iops : min= 8, max= 52, avg=31.82, stdev= 8.85, samples=97 lat (usec) : 50=0.10%, 100=0.26%, 250=0.75%, 750=0.07%, 1000=0.42% lat (msec) : 2=1.27%, 4=9.38%, 10=18.55%, 20=40.92%, 50=27.21% lat (msec) : 100=1.01%, 250=0.03%, 750=0.03% cpu : usr=0.10%, sys=25.96%, ctx=8944, majf=0, minf=18 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=181541: Fri Sep 18 02:00:54 2026 read: IOPS=29, BW=119KiB/s (122kB/s)(6028KiB/50602msec) clat (usec): min=30, max=82017, avg=17785.21, stdev=9781.01 lat (usec): min=31, max=82019, avg=17785.79, stdev=9781.05 clat percentiles (usec): | 1.00th=[ 135], 5.00th=[ 7504], 10.00th=[ 8717], 20.00th=[10290], | 30.00th=[11731], 40.00th=[13566], 50.00th=[15795], 60.00th=[18220], | 70.00th=[20579], 80.00th=[23725], 90.00th=[29492], 95.00th=[35390], | 99.00th=[51643], 99.50th=[57934], 99.90th=[72877], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 40, max= 191, per=25.38%, avg=120.29, stdev=30.47, samples=99 iops : min= 10, max= 47, avg=29.76, stdev= 7.68, samples=99 write: IOPS=30, BW=124KiB/s (127kB/s)(6260KiB/50602msec); 0 zone resets clat (usec): min=692, max=689104, avg=15118.63, stdev=20634.47 lat (usec): min=693, max=689105, avg=15119.39, stdev=20634.47 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 2606], 10.00th=[ 3064], 20.00th=[ 3851], | 30.00th=[ 6194], 40.00th=[ 9765], 50.00th=[ 11994], 60.00th=[ 14877], | 70.00th=[ 18482], 80.00th=[ 23200], 90.00th=[ 30540], 95.00th=[ 37487], | 99.00th=[ 53216], 99.50th=[ 62129], 99.90th=[ 74974], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 13, max= 216, per=24.91%, avg=123.54, stdev=37.54, samples=100 iops : min= 3, max= 54, avg=30.57, stdev= 9.48, samples=100 lat (usec) : 50=0.07%, 100=0.20%, 250=0.65%, 500=0.03%, 750=0.10% lat (usec) : 1000=0.33% lat (msec) : 2=0.75%, 4=9.70%, 10=18.55%, 20=40.40%, 50=27.96% lat (msec) : 100=1.24%, 750=0.03% cpu : usr=0.08%, sys=25.55%, ctx=9012, 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=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=181542: Fri Sep 18 02:00:54 2026 read: IOPS=29, BW=120KiB/s (123kB/s)(6052KiB/50542msec) clat (usec): min=32, max=84251, avg=17496.31, stdev=9439.12 lat (usec): min=32, max=84252, avg=17496.90, stdev=9439.16 clat percentiles (usec): | 1.00th=[ 104], 5.00th=[ 7177], 10.00th=[ 8455], 20.00th=[10028], | 30.00th=[11731], 40.00th=[13698], 50.00th=[15926], 60.00th=[17957], | 70.00th=[20841], 80.00th=[23725], 90.00th=[28967], 95.00th=[34866], | 99.00th=[47449], 99.50th=[54789], 99.90th=[83362], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 40, max= 216, per=25.46%, avg=120.70, stdev=34.33, samples=99 iops : min= 10, max= 54, avg=29.86, stdev= 8.63, samples=99 write: IOPS=30, BW=123KiB/s (126kB/s)(6236KiB/50542msec); 0 zone resets clat (usec): min=690, max=727847, avg=15353.19, stdev=21220.37 lat (usec): min=690, max=727848, avg=15354.14, stdev=21220.46 clat percentiles (usec): | 1.00th=[ 889], 5.00th=[ 2573], 10.00th=[ 3064], 20.00th=[ 4113], | 30.00th=[ 6980], 40.00th=[ 10159], 50.00th=[ 12780], 60.00th=[ 15533], | 70.00th=[ 19006], 80.00th=[ 23725], 90.00th=[ 29754], 95.00th=[ 36963], | 99.00th=[ 50070], 99.50th=[ 55313], 99.90th=[ 67634], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 63, max= 208, per=25.10%, avg=124.49, stdev=28.76, samples=99 iops : min= 15, max= 52, avg=30.81, stdev= 7.25, samples=99 lat (usec) : 50=0.13%, 100=0.33%, 250=0.85%, 500=0.07%, 750=0.20% lat (usec) : 1000=0.42% lat (msec) : 2=0.91%, 4=8.46%, 10=18.26%, 20=40.36%, 50=28.94% lat (msec) : 100=1.04%, 750=0.03% cpu : usr=0.08%, sys=25.46%, ctx=9183, 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=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=475KiB/s (486kB/s), 118KiB/s-120KiB/s (121kB/s-123kB/s), io=23.4MiB (24.6MB), run=49573-50602msec WRITE: bw=497KiB/s (509kB/s), 123KiB/s-128KiB/s (126kB/s-131kB/s), io=24.6MiB (25.7MB), run=49573-50602msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181534: Fri Sep 18 02:01:00 2026 read: IOPS=26, BW=106KiB/s (108kB/s)(5992KiB/56723msec) clat (msec): min=2, max=691, avg=16.23, stdev=21.88 lat (msec): min=2, max=691, avg=16.23, stdev=21.88 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 19], 80.00th=[ 26], 90.00th=[ 35], 95.00th=[ 44], | 99.00th=[ 62], 99.50th=[ 70], 99.90th=[ 86], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 31, max= 424, per=24.68%, avg=104.39, stdev=79.86, samples=111 iops : min= 7, max= 106, avg=25.85, stdev=20.07, samples=111 write: IOPS=27, BW=111KiB/s (114kB/s)(6296KiB/56723msec); 0 zone resets clat (msec): min=3, max=123, avg=20.47, stdev=15.19 lat (msec): min=3, max=123, avg=20.47, stdev=15.19 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 17], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 33], 90.00th=[ 42], 95.00th=[ 50], | 99.00th=[ 69], 99.50th=[ 80], 99.90th=[ 103], 99.95th=[ 124], | 99.99th=[ 124] bw ( KiB/s): min= 39, max= 416, per=24.75%, avg=109.65, stdev=80.86, samples=111 iops : min= 9, max= 104, avg=27.16, stdev=20.30, samples=111 lat (msec) : 4=2.28%, 10=37.24%, 20=25.49%, 50=31.25%, 100=3.65% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.08%, sys=11.89%, ctx=5562, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181535: Fri Sep 18 02:01:00 2026 read: IOPS=26, BW=105KiB/s (107kB/s)(5940KiB/56672msec) clat (msec): min=2, max=721, avg=16.08, stdev=22.35 lat (msec): min=2, max=721, avg=16.08, stdev=22.35 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 10], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 19], 80.00th=[ 25], 90.00th=[ 35], 95.00th=[ 42], | 99.00th=[ 59], 99.50th=[ 72], 99.90th=[ 93], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 16, max= 416, per=24.73%, avg=104.60, stdev=81.20, samples=111 iops : min= 4, max= 104, avg=25.90, stdev=20.39, samples=111 write: IOPS=28, BW=112KiB/s (115kB/s)(6348KiB/56672msec); 0 zone resets clat (usec): min=3981, max=90196, avg=20541.92, stdev=14834.59 lat (usec): min=3982, max=90196, avg=20542.63, stdev=14834.66 clat percentiles (usec): | 1.00th=[ 4948], 5.00th=[ 5735], 10.00th=[ 6325], 20.00th=[ 7111], | 30.00th=[ 8455], 40.00th=[12518], 50.00th=[16319], 60.00th=[21103], | 70.00th=[26346], 80.00th=[32375], 90.00th=[41681], 95.00th=[50070], | 99.00th=[65274], 99.50th=[76022], 99.90th=[84411], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 40, max= 392, per=24.99%, avg=110.72, stdev=79.84, samples=111 iops : min= 10, max= 98, avg=27.43, stdev=20.05, samples=111 lat (msec) : 4=2.15%, 10=36.33%, 20=26.99%, 50=30.92%, 100=3.58% lat (msec) : 750=0.03% cpu : usr=0.08%, sys=12.10%, ctx=5608, 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=181536: Fri Sep 18 02:01:00 2026 read: IOPS=26, BW=107KiB/s (109kB/s)(6028KiB/56562msec) clat (usec): min=2468, max=84827, avg=15883.55, stdev=13244.92 lat (usec): min=2469, max=84828, avg=15884.15, stdev=13244.96 clat percentiles (usec): | 1.00th=[ 3261], 5.00th=[ 4113], 10.00th=[ 4490], 20.00th=[ 5145], | 30.00th=[ 6259], 40.00th=[ 9372], 50.00th=[11338], 60.00th=[14484], | 70.00th=[18220], 80.00th=[24249], 90.00th=[35390], 95.00th=[43254], | 99.00th=[60556], 99.50th=[71828], 99.90th=[82314], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 39, max= 400, per=25.17%, avg=106.48, stdev=80.98, samples=111 iops : min= 9, max= 100, avg=26.37, stdev=20.34, samples=111 write: IOPS=27, BW=111KiB/s (113kB/s)(6260KiB/56562msec); 0 zone resets clat (msec): min=4, max=725, avg=20.72, stdev=23.24 lat (msec): min=4, max=725, avg=20.72, stdev=23.24 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 13], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 32], 90.00th=[ 41], 95.00th=[ 49], | 99.00th=[ 68], 99.50th=[ 84], 99.90th=[ 148], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 31, max= 360, per=24.90%, avg=110.29, stdev=80.94, samples=111 iops : min= 7, max= 90, avg=27.32, stdev=20.32, samples=111 lat (msec) : 4=1.99%, 10=36.17%, 20=27.93%, 50=30.31%, 100=3.52% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.06%, sys=12.11%, ctx=5546, 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=181537: Fri Sep 18 02:01:00 2026 read: IOPS=26, BW=107KiB/s (109kB/s)(6052KiB/56664msec) clat (usec): min=2355, max=75334, avg=15707.86, stdev=12688.76 lat (usec): min=2355, max=75334, avg=15708.67, stdev=12688.68 clat percentiles (usec): | 1.00th=[ 3195], 5.00th=[ 3982], 10.00th=[ 4424], 20.00th=[ 5211], | 30.00th=[ 6194], 40.00th=[ 9241], 50.00th=[11469], 60.00th=[14091], | 70.00th=[18744], 80.00th=[25035], 90.00th=[34866], 95.00th=[41157], | 99.00th=[56361], 99.50th=[62653], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 15, max= 400, per=25.09%, avg=106.12, stdev=82.04, samples=111 iops : min= 3, max= 100, avg=26.28, stdev=20.60, samples=111 write: IOPS=27, BW=110KiB/s (113kB/s)(6236KiB/56664msec); 0 zone resets clat (msec): min=4, max=724, avg=20.98, stdev=23.78 lat (msec): min=4, max=724, avg=20.98, stdev=23.78 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 13], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 33], 90.00th=[ 42], 95.00th=[ 51], | 99.00th=[ 71], 99.50th=[ 80], 99.90th=[ 148], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 39, max= 392, per=24.64%, avg=109.14, stdev=81.27, samples=111 iops : min= 9, max= 98, avg=27.04, stdev=20.40, samples=111 lat (msec) : 4=2.47%, 10=36.75%, 20=25.91%, 50=31.15%, 100=3.61% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.06%, sys=11.93%, ctx=5487, 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=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=423KiB/s (433kB/s), 105KiB/s-107KiB/s (107kB/s-109kB/s), io=23.4MiB (24.6MB), run=56562-56723msec WRITE: bw=443KiB/s (454kB/s), 110KiB/s-112KiB/s (113kB/s-115kB/s), io=24.6MiB (25.7MB), run=56562-56723msec 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=181578: Fri Sep 18 02:01:21 2026 read: IOPS=26, BW=418KiB/s (428kB/s)(5920KiB/14159msec) clat (usec): min=83, max=62257, avg=19460.54, stdev=9846.83 lat (usec): min=83, max=62258, avg=19461.10, stdev=9846.84 clat percentiles (usec): | 1.00th=[ 111], 5.00th=[ 6456], 10.00th=[ 9765], 20.00th=[12518], | 30.00th=[14353], 40.00th=[15795], 50.00th=[17695], 60.00th=[20055], | 70.00th=[22676], 80.00th=[25822], 90.00th=[31327], 95.00th=[37487], | 99.00th=[52167], 99.50th=[61080], 99.90th=[62129], 99.95th=[62129], | 99.99th=[62129] bw ( KiB/s): min= 191, max= 608, per=25.11%, avg=411.30, stdev=92.60, samples=27 iops : min= 11, max= 38, avg=25.04, stdev= 5.85, samples=27 write: IOPS=28, BW=450KiB/s (461kB/s)(6368KiB/14159msec); 0 zone resets clat (usec): min=1896, max=74960, avg=17428.19, stdev=11277.97 lat (usec): min=1897, max=74961, avg=17429.14, stdev=11278.00 clat percentiles (usec): | 1.00th=[ 3556], 5.00th=[ 4490], 10.00th=[ 5407], 20.00th=[ 7635], | 30.00th=[10421], 40.00th=[12256], 50.00th=[14222], 60.00th=[17433], | 70.00th=[21365], 80.00th=[25822], 90.00th=[33817], 95.00th=[39584], | 99.00th=[50594], 99.50th=[58459], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 192, max= 670, per=26.12%, avg=450.00, stdev=121.42, samples=27 iops : min= 12, max= 41, avg=27.48, stdev= 7.51, samples=27 lat (usec) : 100=0.39%, 250=1.43% lat (msec) : 2=0.13%, 4=1.17%, 10=16.28%, 20=43.62%, 50=35.81% lat (msec) : 100=1.17% cpu : usr=0.09%, sys=28.96%, ctx=2957, 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=181579: Fri Sep 18 02:01:21 2026 read: IOPS=25, BW=409KiB/s (419kB/s)(5744KiB/14044msec) clat (usec): min=89, max=53065, avg=19186.87, stdev=9262.99 lat (usec): min=90, max=53066, avg=19187.48, stdev=9263.03 clat percentiles (usec): | 1.00th=[ 104], 5.00th=[ 7111], 10.00th=[ 9765], 20.00th=[11994], | 30.00th=[13960], 40.00th=[16319], 50.00th=[18220], 60.00th=[19792], | 70.00th=[22152], 80.00th=[25822], 90.00th=[31589], 95.00th=[38011], | 99.00th=[45351], 99.50th=[46924], 99.90th=[53216], 99.95th=[53216], | 99.99th=[53216] bw ( KiB/s): min= 159, max= 603, per=25.08%, avg=410.89, stdev=113.01, samples=27 iops : min= 9, max= 37, avg=25.04, stdev= 7.07, samples=27 write: IOPS=29, BW=466KiB/s (477kB/s)(6544KiB/14044msec); 0 zone resets clat (usec): min=1138, max=72354, avg=17373.98, stdev=11644.39 lat (usec): min=1139, max=72355, avg=17375.01, stdev=11644.42 clat percentiles (usec): | 1.00th=[ 3163], 5.00th=[ 4490], 10.00th=[ 5080], 20.00th=[ 6587], | 30.00th=[10159], 40.00th=[12256], 50.00th=[14484], 60.00th=[17695], | 70.00th=[21627], 80.00th=[26346], 90.00th=[32637], 95.00th=[39060], | 99.00th=[57934], 99.50th=[58983], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 192, max= 670, per=26.63%, avg=458.89, stdev=119.52, samples=27 iops : min= 12, max= 41, avg=28.04, stdev= 7.50, samples=27 lat (usec) : 100=0.39%, 250=1.56%, 1000=0.13% lat (msec) : 2=0.26%, 4=1.04%, 10=16.93%, 20=44.27%, 50=34.38% lat (msec) : 100=1.04% cpu : usr=0.10%, sys=29.20%, ctx=2978, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181580: Fri Sep 18 02:01:21 2026 read: IOPS=26, BW=428KiB/s (438kB/s)(6256KiB/14620msec) clat (usec): min=89, max=67582, avg=19454.10, stdev=9453.61 lat (usec): min=89, max=67583, avg=19454.74, stdev=9453.63 clat percentiles (usec): | 1.00th=[ 113], 5.00th=[ 8848], 10.00th=[10290], 20.00th=[12387], | 30.00th=[14222], 40.00th=[16188], 50.00th=[17957], 60.00th=[20579], | 70.00th=[22938], 80.00th=[26084], 90.00th=[30540], 95.00th=[35390], | 99.00th=[55313], 99.50th=[59507], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 223, max= 606, per=25.75%, avg=421.82, stdev=96.34, samples=28 iops : min= 13, max= 37, avg=25.71, stdev= 6.02, samples=28 write: IOPS=25, BW=413KiB/s (422kB/s)(6032KiB/14620msec); 0 zone resets clat (usec): min=1439, max=70796, avg=18456.77, stdev=12328.06 lat (usec): min=1440, max=70798, avg=18461.21, stdev=12327.83 clat percentiles (usec): | 1.00th=[ 2900], 5.00th=[ 4555], 10.00th=[ 5211], 20.00th=[ 8029], | 30.00th=[10814], 40.00th=[12649], 50.00th=[14615], 60.00th=[17957], | 70.00th=[22152], 80.00th=[28705], 90.00th=[35914], 95.00th=[41681], | 99.00th=[59507], 99.50th=[67634], 99.90th=[70779], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 160, max= 606, per=22.91%, avg=394.75, stdev=99.21, samples=28 iops : min= 10, max= 37, avg=24.00, stdev= 6.18, samples=28 lat (usec) : 100=0.13%, 250=1.69% lat (msec) : 2=0.13%, 4=1.04%, 10=14.32%, 20=44.40%, 50=36.72% lat (msec) : 100=1.56% cpu : usr=0.08%, sys=28.13%, ctx=3111, 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=181581: Fri Sep 18 02:01:21 2026 read: IOPS=26, BW=432KiB/s (442kB/s)(6032KiB/13974msec) clat (usec): min=86, max=74861, avg=18919.16, stdev=9828.97 lat (usec): min=86, max=74862, avg=18919.76, stdev=9828.98 clat percentiles (usec): | 1.00th=[ 106], 5.00th=[ 186], 10.00th=[10028], 20.00th=[11994], | 30.00th=[13435], 40.00th=[15401], 50.00th=[17433], 60.00th=[20055], | 70.00th=[22152], 80.00th=[24773], 90.00th=[30540], 95.00th=[38536], | 99.00th=[45876], 99.50th=[64226], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 160, max= 606, per=26.17%, avg=428.59, stdev=103.40, samples=27 iops : min= 10, max= 37, avg=26.15, stdev= 6.43, samples=27 write: IOPS=27, BW=448KiB/s (458kB/s)(6256KiB/13974msec); 0 zone resets clat (usec): min=1418, max=67779, avg=17386.36, stdev=11057.33 lat (usec): min=1419, max=67780, avg=17387.95, stdev=11056.73 clat percentiles (usec): | 1.00th=[ 4146], 5.00th=[ 4883], 10.00th=[ 5407], 20.00th=[ 7635], | 30.00th=[10552], 40.00th=[12649], 50.00th=[14746], 60.00th=[17171], | 70.00th=[20841], 80.00th=[25560], 90.00th=[32113], 95.00th=[41157], | 99.00th=[52167], 99.50th=[54789], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 286, max= 608, per=25.95%, avg=447.07, stdev=89.96, samples=27 iops : min= 17, max= 38, avg=27.30, stdev= 5.62, samples=27 lat (usec) : 100=0.26%, 250=2.47% lat (msec) : 2=0.13%, 4=0.13%, 10=15.89%, 20=44.92%, 50=35.16% lat (msec) : 100=1.04% cpu : usr=0.05%, sys=28.98%, ctx=2993, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1638KiB/s (1678kB/s), 409KiB/s-432KiB/s (419kB/s-442kB/s), io=23.4MiB (24.5MB), run=13974-14620msec WRITE: bw=1724KiB/s (1765kB/s), 413KiB/s-466KiB/s (422kB/s-477kB/s), io=24.6MiB (25.8MB), run=13974-14620msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181583: Fri Sep 18 02:01:22 2026 read: IOPS=23, BW=375KiB/s (384kB/s)(5920KiB/15768msec) clat (usec): min=4279, max=77937, avg=18547.94, stdev=13655.26 lat (usec): min=4280, max=77937, avg=18548.51, stdev=13655.23 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 5604], 10.00th=[ 6587], 20.00th=[ 8586], | 30.00th=[10159], 40.00th=[11731], 50.00th=[13304], 60.00th=[15664], | 70.00th=[20317], 80.00th=[28705], 90.00th=[40633], 95.00th=[47449], | 99.00th=[74974], 99.50th=[76022], 99.90th=[78119], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 160, max= 1120, per=24.74%, avg=372.03, stdev=196.14, samples=31 iops : min= 10, max= 70, avg=22.71, stdev=12.43, samples=31 write: IOPS=25, BW=404KiB/s (414kB/s)(6368KiB/15768msec); 0 zone resets clat (usec): min=5735, max=86093, avg=22171.32, stdev=14019.36 lat (usec): min=5736, max=86095, avg=22172.52, stdev=14019.44 clat percentiles (usec): | 1.00th=[ 5997], 5.00th=[ 7373], 10.00th=[ 8586], 20.00th=[10290], | 30.00th=[12518], 40.00th=[15139], 50.00th=[18744], 60.00th=[22152], | 70.00th=[26608], 80.00th=[32113], 90.00th=[40633], 95.00th=[47449], | 99.00th=[74974], 99.50th=[82314], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 224, max= 1024, per=25.48%, avg=403.10, stdev=200.40, samples=31 iops : min= 14, max= 64, avg=24.68, stdev=12.70, samples=31 lat (msec) : 10=23.96%, 20=36.98%, 50=35.81%, 100=3.26% cpu : usr=0.06%, sys=12.83%, ctx=1594, 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=181584: Fri Sep 18 02:01:22 2026 read: IOPS=22, BW=361KiB/s (369kB/s)(5744KiB/15925msec) clat (usec): min=3066, max=74430, avg=18276.08, stdev=12758.17 lat (usec): min=3066, max=74431, avg=18276.59, stdev=12758.18 clat percentiles (usec): | 1.00th=[ 3785], 5.00th=[ 5669], 10.00th=[ 6259], 20.00th=[ 8356], | 30.00th=[ 9765], 40.00th=[11600], 50.00th=[13566], 60.00th=[15926], | 70.00th=[20579], 80.00th=[28443], 90.00th=[38536], 95.00th=[44827], | 99.00th=[55837], 99.50th=[67634], 99.90th=[73925], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 127, max= 832, per=23.48%, avg=353.16, stdev=157.26, samples=31 iops : min= 7, max= 52, avg=21.55, stdev=10.06, samples=31 write: IOPS=25, BW=411KiB/s (421kB/s)(6544KiB/15925msec); 0 zone resets clat (usec): min=4990, max=84918, avg=22728.99, stdev=14732.75 lat (usec): min=4991, max=84921, avg=22730.08, stdev=14732.81 clat percentiles (usec): | 1.00th=[ 5735], 5.00th=[ 7111], 10.00th=[ 8094], 20.00th=[10028], | 30.00th=[12256], 40.00th=[15008], 50.00th=[17957], 60.00th=[22152], | 70.00th=[27657], 80.00th=[35390], 90.00th=[43779], 95.00th=[52691], | 99.00th=[65799], 99.50th=[72877], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 96, max= 1216, per=25.11%, avg=397.16, stdev=211.08, samples=31 iops : min= 6, max= 76, avg=24.29, stdev=13.32, samples=31 lat (msec) : 4=0.65%, 10=24.35%, 20=36.46%, 50=34.11%, 100=4.43% cpu : usr=0.06%, sys=12.86%, ctx=1497, 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=181585: Fri Sep 18 02:01:22 2026 read: IOPS=24, BW=397KiB/s (406kB/s)(6256KiB/15765msec) clat (usec): min=4071, max=91294, avg=17970.84, stdev=14048.11 lat (usec): min=4071, max=91295, avg=17971.46, stdev=14048.11 clat percentiles (usec): | 1.00th=[ 4490], 5.00th=[ 5276], 10.00th=[ 5800], 20.00th=[ 7701], | 30.00th=[ 9765], 40.00th=[11338], 50.00th=[12780], 60.00th=[14615], | 70.00th=[19530], 80.00th=[27132], 90.00th=[37487], 95.00th=[49021], | 99.00th=[66323], 99.50th=[72877], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 160, max= 1472, per=26.47%, avg=398.10, stdev=248.46, samples=31 iops : min= 10, max= 92, avg=24.35, stdev=15.67, samples=31 write: IOPS=23, BW=383KiB/s (392kB/s)(6032KiB/15765msec); 0 zone resets clat (usec): min=6008, max=91052, avg=23072.72, stdev=14474.11 lat (usec): min=6009, max=91053, avg=23073.82, stdev=14474.21 clat percentiles (usec): | 1.00th=[ 6521], 5.00th=[ 7701], 10.00th=[ 8586], 20.00th=[10683], | 30.00th=[12911], 40.00th=[15139], 50.00th=[19530], 60.00th=[23462], | 70.00th=[28443], 80.00th=[34866], 90.00th=[40633], 95.00th=[50070], | 99.00th=[73925], 99.50th=[87557], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 159, max= 896, per=23.85%, avg=377.35, stdev=180.26, samples=31 iops : min= 9, max= 56, avg=23.06, stdev=11.43, samples=31 lat (msec) : 10=25.65%, 20=35.68%, 50=33.85%, 100=4.82% cpu : usr=0.06%, sys=12.78%, ctx=1493, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181586: Fri Sep 18 02:01:22 2026 read: IOPS=23, BW=379KiB/s (388kB/s)(6032KiB/15908msec) clat (usec): min=2823, max=74711, avg=18690.66, stdev=14212.87 lat (usec): min=2823, max=74711, avg=18691.20, stdev=14212.88 clat percentiles (usec): | 1.00th=[ 3195], 5.00th=[ 5342], 10.00th=[ 5932], 20.00th=[ 7635], | 30.00th=[ 9503], 40.00th=[11600], 50.00th=[13304], 60.00th=[16057], | 70.00th=[20579], 80.00th=[29754], 90.00th=[41681], 95.00th=[50594], | 99.00th=[64226], 99.50th=[72877], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 158, max= 1248, per=24.43%, avg=367.42, stdev=223.28, samples=31 iops : min= 9, max= 78, avg=22.42, stdev=14.12, samples=31 write: IOPS=24, BW=393KiB/s (403kB/s)(6256KiB/15908msec); 0 zone resets clat (usec): min=4679, max=98314, avg=22422.35, stdev=15261.82 lat (usec): min=4680, max=98316, avg=22423.61, stdev=15261.80 clat percentiles (usec): | 1.00th=[ 5735], 5.00th=[ 7046], 10.00th=[ 8029], 20.00th=[10290], | 30.00th=[12256], 40.00th=[14615], 50.00th=[18220], 60.00th=[21627], | 70.00th=[26346], 80.00th=[33817], 90.00th=[42730], 95.00th=[50070], | 99.00th=[87557], 99.50th=[92799], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 127, max= 1024, per=24.32%, avg=384.81, stdev=186.88, samples=31 iops : min= 7, max= 64, avg=23.52, stdev=11.83, samples=31 lat (msec) : 4=1.04%, 10=24.74%, 20=35.29%, 50=33.98%, 100=4.95% cpu : usr=0.06%, sys=12.67%, ctx=1545, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1504KiB/s (1540kB/s), 361KiB/s-397KiB/s (369kB/s-406kB/s), io=23.4MiB (24.5MB), run=15765-15925msec WRITE: bw=1582KiB/s (1620kB/s), 383KiB/s-411KiB/s (392kB/s-421kB/s), io=24.6MiB (25.8MB), run=15765-15925msec 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=181598: Fri Sep 18 02:01:32 2026 read: IOPS=3, BW=3075KiB/s (3149kB/s)(7168KiB/2331msec) clat (usec): min=446, max=751285, avg=211032.58, stdev=245745.90 lat (usec): min=447, max=751286, avg=211033.75, stdev=245745.96 clat percentiles (usec): | 1.00th=[ 449], 5.00th=[ 449], 10.00th=[ 449], 20.00th=[103285], | 30.00th=[135267], 40.00th=[135267], 50.00th=[137364], 60.00th=[156238], | 70.00th=[156238], 80.00th=[193987], 90.00th=[750781], 95.00th=[750781], | 99.00th=[750781], 99.50th=[750781], 99.90th=[750781], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 1703, max= 4096, per=63.14%, avg=3298.33, stdev=1381.60, samples=3 iops : min= 1, max= 4, avg= 3.00, stdev= 1.73, samples=3 write: IOPS=2, BW=2196KiB/s (2249kB/s)(5120KiB/2331msec); 0 zone resets clat (msec): min=119, max=207, avg=166.65, stdev=37.29 lat (msec): min=119, max=207, avg=166.70, stdev=37.30 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 121], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 178], 60.00th=[ 178], | 70.00th=[ 192], 80.00th=[ 192], 90.00th=[ 209], 95.00th=[ 209], | 99.00th=[ 209], 99.50th=[ 209], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 2048, max= 6144, per=56.00%, avg=4096.00, stdev=2896.31, samples=2 iops : min= 2, max= 6, avg= 4.00, stdev= 2.83, samples=2 lat (usec) : 500=8.33% lat (msec) : 250=83.33%, 1000=8.33% cpu : usr=0.04%, sys=54.10%, ctx=1459, 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=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=181599: Fri Sep 18 02:01:32 2026 read: IOPS=0, BW=522KiB/s (535kB/s)(2048KiB/3920msec) clat (usec): min=549, max=163020, avg=81785.18, stdev=114884.73 lat (usec): min=550, max=163022, avg=81786.37, stdev=114884.91 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 553], | 30.00th=[ 553], 40.00th=[ 553], 50.00th=[ 553], 60.00th=[162530], | 70.00th=[162530], 80.00th=[162530], 90.00th=[162530], 95.00th=[162530], | 99.00th=[162530], 99.50th=[162530], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 1732, max= 1765, per=33.47%, avg=1748.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2612KiB/s (2675kB/s)(10.0MiB/3920msec); 0 zone resets clat (msec): min=80, max=945, avg=368.28, stdev=294.40 lat (msec): min=80, max=945, avg=368.34, stdev=294.39 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 159], | 30.00th=[ 163], 40.00th=[ 199], 50.00th=[ 209], 60.00th=[ 209], | 70.00th=[ 359], 80.00th=[ 651], 90.00th=[ 718], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1765, max= 5976, per=54.46%, avg=3983.25, stdev=1724.06, samples=4 iops : min= 1, max= 5, avg= 3.50, stdev= 1.73, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=50.00%, 500=8.33%, 750=16.67%, 1000=8.33% cpu : usr=0.03%, sys=36.44%, ctx=221, 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=181600: Fri Sep 18 02:01:32 2026 read: IOPS=1, BW=1626KiB/s (1665kB/s)(6144KiB/3779msec) clat (usec): min=576, max=254022, avg=148935.82, stdev=82544.71 lat (usec): min=577, max=254023, avg=148936.90, stdev=82544.53 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 578], 10.00th=[ 578], 20.00th=[139461], | 30.00th=[139461], 40.00th=[162530], 50.00th=[162530], 60.00th=[164627], | 70.00th=[170918], 80.00th=[170918], 90.00th=[254804], 95.00th=[254804], | 99.00th=[254804], 99.50th=[254804], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 2048, max= 3984, per=61.02%, avg=3187.67, stdev=1012.64, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 write: IOPS=1, BW=1626KiB/s (1665kB/s)(6144KiB/3779msec); 0 zone resets clat (msec): min=126, max=1699, avg=470.12, stdev=610.27 lat (msec): min=126, max=1699, avg=470.17, stdev=610.28 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 292], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 1765, max= 3984, per=38.52%, avg=2817.00, stdev=1078.22, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=58.33%, 500=25.00%, 2000=8.33% cpu : usr=0.00%, sys=34.07%, ctx=388, 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=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=181601: Fri Sep 18 02:01:32 2026 read: IOPS=1, BW=1545KiB/s (1583kB/s)(5120KiB/3313msec) clat (usec): min=388, max=181778, avg=123905.86, stdev=71841.65 lat (usec): min=389, max=181779, avg=123906.90, stdev=71842.00 clat percentiles (usec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[133694], 40.00th=[133694], 50.00th=[137364], 60.00th=[137364], | 70.00th=[164627], 80.00th=[164627], 90.00th=[181404], 95.00th=[181404], | 99.00th=[181404], 99.50th=[181404], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 7062, max= 7062, per=100.00%, avg=7062.00, stdev= 0.00, samples=1 iops : min= 6, max= 6, avg= 6.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2164KiB/s (2216kB/s)(7168KiB/3313msec); 0 zone resets clat (msec): min=171, max=1320, avg=376.01, stdev=419.19 lat (msec): min=171, max=1320, avg=376.08, stdev=419.19 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 174], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 222], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 288], 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= 1726, max= 6144, per=46.93%, avg=3432.75, stdev=2120.15, samples=4 iops : min= 1, max= 6, avg= 3.00, stdev= 2.45, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=66.67%, 500=16.67%, 2000=8.33% cpu : usr=0.03%, sys=38.68%, ctx=488, 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=5224KiB/s (5350kB/s), 522KiB/s-3075KiB/s (535kB/s-3149kB/s), io=20.0MiB (20.0MB), run=2331-3920msec WRITE: bw=7314KiB/s (7490kB/s), 1626KiB/s-2612KiB/s (1665kB/s-2675kB/s), io=28.0MiB (29.4MB), run=2331-3920msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181594: Fri Sep 18 02:01:32 2026 read: IOPS=1, BW=1858KiB/s (1903kB/s)(7168KiB/3857msec) clat (msec): min=99, max=1075, avg=380.58, stdev=344.79 lat (msec): min=99, max=1075, avg=380.59, stdev=344.79 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 165], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 188], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 518], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1721, max= 4096, per=47.27%, avg=2468.75, stdev=1094.57, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1327KiB/s (1359kB/s)(5120KiB/3857msec); 0 zone resets clat (msec): min=58, max=404, avg=228.64, stdev=147.04 lat (msec): min=59, max=404, avg=228.70, stdev=147.03 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 59], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 264], 60.00th=[ 264], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 2015, max= 2048, per=27.81%, avg=2033.50, stdev=17.06, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (msec) : 100=25.00%, 250=25.00%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=11.88%, ctx=114, 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=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=181595: Fri Sep 18 02:01:32 2026 read: IOPS=0, BW=558KiB/s (571kB/s)(2048KiB/3670msec) clat (msec): min=50, max=136, avg=93.63, stdev=60.82 lat (msec): min=50, max=136, avg=93.63, stdev=60.82 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 51], | 30.00th=[ 51], 40.00th=[ 51], 50.00th=[ 51], 60.00th=[ 138], | 70.00th=[ 138], 80.00th=[ 138], 90.00th=[ 138], 95.00th=[ 138], | 99.00th=[ 138], 99.50th=[ 138], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 1718, max= 2015, per=35.74%, avg=1866.50, stdev=210.01, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2790KiB/s (2857kB/s)(10.0MiB/3670msec); 0 zone resets clat (msec): min=54, max=1012, avg=346.77, stdev=322.98 lat (msec): min=54, max=1012, avg=346.84, stdev=322.98 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 84], | 30.00th=[ 107], 40.00th=[ 144], 50.00th=[ 243], 60.00th=[ 296], | 70.00th=[ 309], 80.00th=[ 401], 90.00th=[ 818], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 2015, max= 6144, per=41.87%, avg=3061.50, stdev=1721.06, samples=6 iops : min= 1, max= 6, avg= 2.50, stdev= 2.07, samples=6 lat (msec) : 100=25.00%, 250=33.33%, 500=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.03%, sys=12.92%, ctx=133, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181596: Fri Sep 18 02:01:32 2026 read: IOPS=1, BW=1567KiB/s (1605kB/s)(6144KiB/3921msec) clat (msec): min=31, max=411, avg=184.81, stdev=170.40 lat (msec): min=31, max=411, avg=184.81, stdev=170.40 clat percentiles (msec): | 1.00th=[ 32], 5.00th=[ 32], 10.00th=[ 32], 20.00th=[ 60], | 30.00th=[ 60], 40.00th=[ 72], 50.00th=[ 72], 60.00th=[ 148], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 4031, max= 4047, per=77.33%, avg=4039.00, stdev=11.31, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1567KiB/s (1605kB/s)(6144KiB/3921msec); 0 zone resets clat (msec): min=91, max=1609, avg=458.26, stdev=568.00 lat (msec): min=91, max=1609, avg=458.33, stdev=568.00 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 255], 50.00th=[ 255], 60.00th=[ 264], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 2015, max= 3436, per=32.62%, avg=2385.50, stdev=700.48, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 50=8.33%, 100=25.00%, 250=8.33%, 500=50.00%, 2000=8.33% cpu : usr=0.00%, sys=17.12%, ctx=169, 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=181597: Fri Sep 18 02:01:32 2026 read: IOPS=1, BW=1744KiB/s (1786kB/s)(5120KiB/2935msec) clat (msec): min=53, max=271, avg=192.38, stdev=84.81 lat (msec): min=53, max=271, avg=192.38, stdev=84.81 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 54], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 228], 60.00th=[ 228], | 70.00th=[ 234], 80.00th=[ 234], 90.00th=[ 271], 95.00th=[ 271], | 99.00th=[ 271], 99.50th=[ 271], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 4031, max= 4087, per=77.71%, avg=4059.00, stdev=39.60, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2442KiB/s (2501kB/s)(7168KiB/2935msec); 0 zone resets clat (msec): min=60, max=938, avg=273.68, stdev=313.14 lat (msec): min=60, max=938, avg=273.74, stdev=313.14 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 79], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 131], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 338], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1718, max= 4096, per=33.77%, avg=2469.25, stdev=1094.61, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (msec) : 100=33.33%, 250=33.33%, 500=25.00%, 1000=8.33% cpu : usr=0.00%, sys=13.53%, ctx=228, 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=5223KiB/s (5349kB/s), 558KiB/s-1858KiB/s (571kB/s-1903kB/s), io=20.0MiB (20.0MB), run=2935-3921msec WRITE: bw=7312KiB/s (7488kB/s), 1327KiB/s-2790KiB/s (1359kB/s-2857kB/s), io=28.0MiB (29.4MB), run=2935-3921msec 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=181606: Fri Sep 18 02:01:41 2026 read: IOPS=1, BW=5565KiB/s (5699kB/s)(12.0MiB/2208msec) clat (msec): min=475, max=1176, avg=709.51, stdev=404.62 lat (msec): min=475, max=1176, avg=709.51, stdev=404.62 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 477], 50.00th=[ 477], 60.00th=[ 477], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=41.96%, ctx=3000, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181607: Fri Sep 18 02:01:41 2026 read: IOPS=0, BW=1955KiB/s (2002kB/s)(4096KiB/2095msec) clat (nsec): min=1176.8M, max=1176.8M, avg=1176790880.00, stdev= 0.00 lat (nsec): min=1176.8M, max=1176.8M, avg=1176792030.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] 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=3910KiB/s (4004kB/s)(8192KiB/2095msec); 0 zone resets clat (msec): min=395, max=439, avg=417.51, stdev=30.57 lat (msec): min=396, max=439, avg=417.81, stdev=30.60 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 439], 95.00th=[ 439], | 99.00th=[ 439], 99.50th=[ 439], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 8192, max= 8192, per=59.08%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=20.15%, ctx=1200, 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=181608: Fri Sep 18 02:01:41 2026 write: IOPS=1, BW=5933KiB/s (6076kB/s)(12.0MiB/2071msec); 0 zone resets clat (msec): min=423, max=1109, avg=670.53, stdev=380.84 lat (msec): min=423, max=1109, avg=670.81, stdev=380.75 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 8192, max= 8192, per=59.08%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=17.20%, ctx=93, 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=181609: Fri Sep 18 02:01:41 2026 write: IOPS=1, BW=5200KiB/s (5325kB/s)(12.0MiB/2363msec); 0 zone resets clat (msec): min=148, max=1366, avg=762.59, stdev=608.91 lat (msec): min=148, max=1366, avg=762.93, stdev=608.87 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 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= 5520, max= 8192, per=49.44%, avg=6856.00, stdev=1889.39, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.17%, ctx=83, 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=7420KiB/s (7598kB/s), 1955KiB/s-5565KiB/s (2002kB/s-5699kB/s), io=16.0MiB (16.8MB), run=2095-2208msec WRITE: bw=13.5MiB/s (14.2MB/s), 3910KiB/s-5933KiB/s (4004kB/s-6076kB/s), io=32.0MiB (33.6MB), run=2071-2363msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181611: Fri Sep 18 02:01:41 2026 read: IOPS=1, BW=5338KiB/s (5466kB/s)(12.0MiB/2302msec) clat (msec): min=255, max=1528, avg=762.77, stdev=675.13 lat (msec): min=255, max=1528, avg=762.77, stdev=675.13 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 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= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=12.43%, ctx=84, 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=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=181612: Fri Sep 18 02:01:41 2026 read: IOPS=0, BW=1770KiB/s (1813kB/s)(4096KiB/2314msec) clat (nsec): min=1774.7M, max=1774.7M, avg=1774703204.00, stdev= 0.00 lat (nsec): min=1774.7M, max=1774.7M, avg=1774703896.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1770], 5.00th=[ 1770], 10.00th=[ 1770], 20.00th=[ 1770], | 30.00th=[ 1770], 40.00th=[ 1770], 50.00th=[ 1770], 60.00th=[ 1770], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] 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=3540KiB/s (3625kB/s)(8192KiB/2314msec); 0 zone resets clat (msec): min=215, max=319, avg=267.53, stdev=73.81 lat (msec): min=215, max=319, avg=267.79, stdev=73.82 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 215], 50.00th=[ 215], 60.00th=[ 321], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 8192, max= 8192, per=63.05%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=11.89%, ctx=84, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=181613: Fri Sep 18 02:01:41 2026 write: IOPS=1, BW=4872KiB/s (4989kB/s)(12.0MiB/2522msec); 0 zone resets clat (msec): min=74, max=2351, avg=833.75, stdev=1314.19 lat (msec): min=74, max=2351, avg=834.05, stdev=1314.20 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 74], | 30.00th=[ 74], 40.00th=[ 77], 50.00th=[ 77], 60.00th=[ 77], | 70.00th=[ 2366], 80.00th=[ 2366], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] lat (msec) : 100=66.67%, >=2000=33.33% cpu : usr=0.04%, sys=7.46%, ctx=62, 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=181614: Fri Sep 18 02:01:41 2026 write: IOPS=1, BW=5464KiB/s (5595kB/s)(12.0MiB/2249msec); 0 zone resets clat (msec): min=107, max=1367, avg=748.65, stdev=630.35 lat (msec): min=107, max=1367, avg=748.94, stdev=630.43 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 108], | 30.00th=[ 108], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 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= 6522, max= 8192, per=56.63%, avg=7357.00, stdev=1180.87, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=11.97%, ctx=71, 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=7080KiB/s (7250kB/s), 1770KiB/s-5338KiB/s (1813kB/s-5466kB/s), io=16.0MiB (16.8MB), run=2302-2314msec WRITE: bw=12.7MiB/s (13.3MB/s), 3540KiB/s-5464KiB/s (3625kB/s-5595kB/s), io=32.0MiB (33.6MB), run=2249-2522msec