== sanity test 398b: DIO and buffer IO race ============== 07:38:25 (1786534705) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.74426 s, 18.3 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=182703: Wed Aug 12 07:39:36 2026 read: IOPS=24, BW=97.6KiB/s (99.0kB/s)(5992KiB/61376msec) clat (usec): min=31, max=742054, avg=22485.73, stdev=21649.24 lat (usec): min=31, max=742054, avg=22486.49, stdev=21649.26 clat percentiles (usec): | 1.00th=[ 120], 5.00th=[ 8160], 10.00th=[ 10159], 20.00th=[ 13304], | 30.00th=[ 15664], 40.00th=[ 17695], 50.00th=[ 20055], 60.00th=[ 22938], | 70.00th=[ 25822], 80.00th=[ 29754], 90.00th=[ 35914], 95.00th=[ 42206], | 99.00th=[ 57410], 99.50th=[ 66847], 99.90th=[ 77071], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 6, max= 199, per=24.89%, avg=97.34, stdev=31.06, samples=122 iops : min= 1, max= 49, avg=23.90, stdev= 7.80, samples=122 write: IOPS=25, BW=103KiB/s (105kB/s)(6296KiB/61376msec); 0 zone resets clat (usec): min=607, max=70671, avg=17497.32, stdev=12099.76 lat (usec): min=608, max=70671, avg=17498.21, stdev=12099.81 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 2933], 10.00th=[ 3982], 20.00th=[ 6521], | 30.00th=[ 9634], 40.00th=[12387], 50.00th=[14877], 60.00th=[18220], | 70.00th=[22152], 80.00th=[26608], 90.00th=[34341], 95.00th=[39584], | 99.00th=[56361], 99.50th=[58459], 99.90th=[69731], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 39, max= 216, per=25.21%, avg=103.11, stdev=33.05, samples=121 iops : min= 9, max= 54, avg=25.35, stdev= 8.31, samples=121 lat (usec) : 50=0.03%, 100=0.29%, 250=0.78%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.26% lat (msec) : 2=0.55%, 4=4.36%, 10=14.16%, 20=36.78%, 50=40.49% lat (msec) : 100=2.12%, 750=0.03% cpu : usr=0.07%, sys=26.47%, ctx=10742, 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=182704: Wed Aug 12 07:39:36 2026 read: IOPS=24, BW=97.3KiB/s (99.6kB/s)(5940KiB/61065msec) clat (usec): min=37, max=71953, avg=22174.57, stdev=10536.08 lat (usec): min=38, max=71955, avg=22175.97, stdev=10538.78 clat percentiles (usec): | 1.00th=[ 167], 5.00th=[ 8717], 10.00th=[10814], 20.00th=[13435], | 30.00th=[15533], 40.00th=[17957], 50.00th=[20841], 60.00th=[23725], | 70.00th=[26346], 80.00th=[30016], 90.00th=[35390], 95.00th=[41157], | 99.00th=[54789], 99.50th=[58983], 99.90th=[69731], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 6, max= 159, per=24.72%, avg=96.64, stdev=24.42, samples=121 iops : min= 1, max= 39, avg=23.72, stdev= 6.17, samples=121 write: IOPS=25, BW=104KiB/s (106kB/s)(6348KiB/61065msec); 0 zone resets clat (usec): min=690, max=738037, avg=17627.84, stdev=21421.88 lat (usec): min=691, max=738038, avg=17631.31, stdev=21422.74 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 3064], 10.00th=[ 4015], 20.00th=[ 6456], | 30.00th=[ 9503], 40.00th=[ 12518], 50.00th=[ 15139], 60.00th=[ 17957], | 70.00th=[ 21890], 80.00th=[ 26608], 90.00th=[ 33162], 95.00th=[ 39584], | 99.00th=[ 50594], 99.50th=[ 53740], 99.90th=[ 63701], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 47, max= 231, per=25.39%, avg=103.83, stdev=32.62, samples=120 iops : min= 11, max= 57, avg=25.52, stdev= 8.22, samples=120 lat (usec) : 50=0.03%, 100=0.10%, 250=0.75%, 750=0.10%, 1000=0.13% lat (msec) : 2=0.46%, 4=4.43%, 10=14.49%, 20=36.72%, 50=41.18% lat (msec) : 100=1.60%, 750=0.03% cpu : usr=0.09%, sys=26.70%, ctx=10928, 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=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=182705: Wed Aug 12 07:39:36 2026 read: IOPS=24, BW=98.0KiB/s (101kB/s)(6028KiB/60896msec) clat (usec): min=35, max=116851, avg=21287.07, stdev=11364.77 lat (usec): min=35, max=116852, avg=21287.92, stdev=11364.83 clat percentiles (usec): | 1.00th=[ 108], 5.00th=[ 7767], 10.00th=[ 9765], 20.00th=[ 12387], | 30.00th=[ 14877], 40.00th=[ 17171], 50.00th=[ 19530], 60.00th=[ 21890], | 70.00th=[ 25035], 80.00th=[ 28967], 90.00th=[ 35390], 95.00th=[ 41681], | 99.00th=[ 55837], 99.50th=[ 64750], 99.90th=[107480], 99.95th=[116917], | 99.99th=[116917] bw ( KiB/s): min= 47, max= 199, per=25.49%, avg=99.68, stdev=28.83, samples=120 iops : min= 11, max= 49, avg=24.49, stdev= 7.25, samples=120 write: IOPS=25, BW=103KiB/s (105kB/s)(6260KiB/60896msec); 0 zone resets clat (usec): min=731, max=692732, avg=18310.13, stdev=21164.92 lat (usec): min=732, max=692734, avg=18311.04, stdev=21164.96 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 3032], 10.00th=[ 3982], 20.00th=[ 6128], | 30.00th=[ 8979], 40.00th=[ 12125], 50.00th=[ 15533], 60.00th=[ 18744], | 70.00th=[ 22938], 80.00th=[ 28181], 90.00th=[ 35390], 95.00th=[ 41681], | 99.00th=[ 55837], 99.50th=[ 60556], 99.90th=[ 74974], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 39, max= 215, per=25.33%, avg=103.58, stdev=33.98, samples=120 iops : min= 9, max= 53, avg=25.46, stdev= 8.53, samples=120 lat (usec) : 50=0.10%, 100=0.23%, 250=1.01%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=0.68%, 4=4.30%, 10=15.59%, 20=35.38%, 50=40.53% lat (msec) : 100=1.86%, 250=0.07%, 750=0.03% cpu : usr=0.10%, sys=26.33%, ctx=10540, 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=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=182706: Wed Aug 12 07:39:36 2026 read: IOPS=24, BW=98.8KiB/s (101kB/s)(6052KiB/61243msec) clat (usec): min=48, max=74305, avg=21411.55, stdev=11144.45 lat (usec): min=48, max=74305, avg=21412.59, stdev=11144.19 clat percentiles (usec): | 1.00th=[ 145], 5.00th=[ 7635], 10.00th=[ 9765], 20.00th=[12518], | 30.00th=[14746], 40.00th=[17171], 50.00th=[20055], 60.00th=[22152], | 70.00th=[25035], 80.00th=[29230], 90.00th=[35390], 95.00th=[42206], | 99.00th=[59507], 99.50th=[65274], 99.90th=[71828], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 39, max= 199, per=25.33%, avg=99.05, stdev=29.09, samples=120 iops : min= 9, max= 49, avg=24.33, stdev= 7.36, samples=120 write: IOPS=25, BW=102KiB/s (104kB/s)(6236KiB/61243msec); 0 zone resets clat (usec): min=677, max=682611, avg=18411.86, stdev=20856.57 lat (usec): min=677, max=682612, avg=18412.72, stdev=20856.59 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 3097], 10.00th=[ 4424], 20.00th=[ 6915], | 30.00th=[ 9896], 40.00th=[ 12780], 50.00th=[ 15533], 60.00th=[ 18744], | 70.00th=[ 22152], 80.00th=[ 27395], 90.00th=[ 35390], 95.00th=[ 42730], | 99.00th=[ 56886], 99.50th=[ 61080], 99.90th=[ 66847], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 13, max= 255, per=24.82%, avg=101.51, stdev=34.48, samples=121 iops : min= 3, max= 63, avg=24.94, stdev= 8.64, samples=121 lat (usec) : 50=0.03%, 100=0.20%, 250=0.88%, 500=0.03%, 750=0.23% lat (usec) : 1000=0.23% lat (msec) : 2=0.62%, 4=3.39%, 10=15.17%, 20=36.85%, 50=40.20% lat (msec) : 100=2.15%, 750=0.03% cpu : usr=0.08%, sys=26.33%, ctx=10885, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=391KiB/s (401kB/s), 97.3KiB/s-98.0KiB/s (99.6kB/s-101kB/s), io=23.4MiB (24.6MB), run=60896-61376msec WRITE: bw=410KiB/s (419kB/s), 102KiB/s-104KiB/s (104kB/s-106kB/s), io=24.6MiB (25.7MB), run=60896-61376msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182698: Wed Aug 12 07:39:43 2026 read: IOPS=21, BW=87.7KiB/s (89.8kB/s)(5992KiB/68297msec) clat (msec): min=3, max=745, avg=20.03, stdev=23.08 lat (msec): min=3, max=745, avg=20.03, stdev=23.08 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 40], 95.00th=[ 49], | 99.00th=[ 66], 99.50th=[ 70], 99.90th=[ 89], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 31, max= 328, per=25.21%, avg=87.99, stdev=52.54, samples=134 iops : min= 7, max= 82, avg=21.56, stdev=13.26, samples=134 write: IOPS=23, BW=92.2KiB/s (94.4kB/s)(6296KiB/68297msec); 0 zone resets clat (msec): min=4, max=107, avg=24.20, stdev=15.30 lat (msec): min=4, max=107, avg=24.20, stdev=15.30 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 47], 95.00th=[ 53], | 99.00th=[ 73], 99.50th=[ 83], 99.90th=[ 93], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 23, max= 304, per=25.23%, avg=92.34, stdev=54.29, samples=134 iops : min= 5, max= 76, avg=22.65, stdev=13.71, samples=134 lat (msec) : 4=0.23%, 10=22.85%, 20=32.81%, 50=38.48%, 100=5.57% lat (msec) : 250=0.03%, 750=0.03% cpu : usr=0.08%, sys=15.84%, ctx=7256, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182699: Wed Aug 12 07:39:43 2026 read: IOPS=21, BW=86.6KiB/s (88.6kB/s)(5940KiB/68618msec) clat (msec): min=2, max=685, avg=20.31, stdev=22.55 lat (msec): min=2, max=685, avg=20.31, stdev=22.55 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 42], 95.00th=[ 51], | 99.00th=[ 71], 99.50th=[ 83], 99.90th=[ 110], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 15, max= 336, per=24.81%, avg=86.57, stdev=53.73, samples=135 iops : min= 3, max= 84, avg=21.21, stdev=13.55, samples=135 write: IOPS=23, BW=92.5KiB/s (94.7kB/s)(6348KiB/68618msec); 0 zone resets clat (msec): min=4, max=114, avg=24.11, stdev=15.19 lat (msec): min=4, max=114, avg=24.11, stdev=15.19 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 45], 95.00th=[ 54], | 99.00th=[ 73], 99.50th=[ 83], 99.90th=[ 94], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 39, max= 312, per=25.21%, avg=92.26, stdev=52.32, samples=135 iops : min= 9, max= 78, avg=22.63, stdev=13.22, samples=135 lat (msec) : 4=0.26%, 10=22.46%, 20=33.50%, 50=38.05%, 100=5.63% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.10%, sys=15.59%, ctx=7192, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182700: Wed Aug 12 07:39:43 2026 read: IOPS=22, BW=88.0KiB/s (90.1kB/s)(6028KiB/68477msec) clat (msec): min=3, max=100, avg=19.39, stdev=14.00 lat (msec): min=3, max=100, avg=19.40, stdev=14.01 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 29], 90.00th=[ 39], 95.00th=[ 48], | 99.00th=[ 69], 99.50th=[ 77], 99.90th=[ 92], 99.95th=[ 101], | 99.99th=[ 101] bw ( KiB/s): min= 24, max= 328, per=25.31%, avg=88.34, stdev=56.67, samples=135 iops : min= 6, max= 82, avg=21.65, stdev=14.29, samples=135 write: IOPS=22, BW=91.4KiB/s (93.6kB/s)(6260KiB/68477msec); 0 zone resets clat (msec): min=5, max=691, avg=24.95, stdev=22.88 lat (msec): min=5, max=691, avg=24.95, stdev=22.88 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 37], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 77], 99.50th=[ 83], 99.90th=[ 116], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 31, max= 296, per=25.07%, avg=91.77, stdev=52.12, samples=135 iops : min= 7, max= 74, avg=22.51, stdev=13.15, samples=135 lat (msec) : 4=0.23%, 10=23.31%, 20=33.11%, 50=37.70%, 100=5.57% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.11%, sys=15.62%, ctx=7229, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182701: Wed Aug 12 07:39:43 2026 read: IOPS=22, BW=88.2KiB/s (90.4kB/s)(6052KiB/68588msec) clat (msec): min=2, max=108, avg=19.67, stdev=13.80 lat (msec): min=2, max=108, avg=19.67, stdev=13.80 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 40], 95.00th=[ 48], | 99.00th=[ 64], 99.50th=[ 71], 99.90th=[ 101], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 15, max= 312, per=25.25%, avg=88.11, stdev=54.07, samples=135 iops : min= 3, max= 78, avg=21.59, stdev=13.63, samples=135 write: IOPS=22, BW=90.9KiB/s (93.1kB/s)(6236KiB/68588msec); 0 zone resets clat (msec): min=4, max=694, avg=24.78, stdev=23.10 lat (msec): min=4, max=694, avg=24.78, stdev=23.10 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 37], 90.00th=[ 45], 95.00th=[ 55], | 99.00th=[ 72], 99.50th=[ 81], 99.90th=[ 116], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 31, max= 296, per=24.87%, avg=91.01, stdev=54.65, samples=135 iops : min= 7, max= 74, avg=22.32, stdev=13.80, samples=135 lat (msec) : 4=0.42%, 10=22.95%, 20=32.58%, 50=38.57%, 100=5.31% lat (msec) : 250=0.13%, 750=0.03% cpu : usr=0.06%, sys=15.64%, ctx=7240, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=350KiB/s (358kB/s), 86.6KiB/s-88.2KiB/s (88.6kB/s-90.4kB/s), io=23.4MiB (24.6MB), run=68297-68618msec WRITE: bw=366KiB/s (375kB/s), 90.9KiB/s-92.5KiB/s (93.1kB/s-94.7kB/s), io=24.6MiB (25.7MB), run=68297-68618msec 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=182734: Wed Aug 12 07:40:09 2026 read: IOPS=18, BW=292KiB/s (299kB/s)(5920KiB/20245msec) clat (usec): min=85, max=98745, avg=26992.50, stdev=13751.86 lat (usec): min=85, max=98746, avg=26993.19, stdev=13751.89 clat percentiles (usec): | 1.00th=[ 110], 5.00th=[ 6128], 10.00th=[12649], 20.00th=[16450], | 30.00th=[19792], 40.00th=[22152], 50.00th=[24773], 60.00th=[28443], | 70.00th=[32375], 80.00th=[36963], 90.00th=[44303], 95.00th=[51643], | 99.00th=[64226], 99.50th=[76022], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 159, max= 542, per=24.04%, avg=284.38, stdev=87.54, samples=39 iops : min= 9, max= 33, avg=17.15, stdev= 5.48, samples=39 write: IOPS=19, BW=315KiB/s (322kB/s)(6368KiB/20245msec); 0 zone resets clat (usec): min=2017, max=76299, avg=25425.55, stdev=14416.11 lat (usec): min=2018, max=76300, avg=25426.80, stdev=14416.17 clat percentiles (usec): | 1.00th=[ 3523], 5.00th=[ 6718], 10.00th=[ 8586], 20.00th=[11731], | 30.00th=[16581], 40.00th=[19792], 50.00th=[23200], 60.00th=[27132], | 70.00th=[31327], 80.00th=[36439], 90.00th=[44827], 95.00th=[52167], | 99.00th=[68682], 99.50th=[73925], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 127, max= 544, per=25.16%, avg=313.03, stdev=100.97, samples=39 iops : min= 7, max= 34, avg=18.95, stdev= 6.40, samples=39 lat (usec) : 100=0.13%, 250=2.08%, 500=0.13% lat (msec) : 4=0.65%, 10=7.03%, 20=25.91%, 50=57.29%, 100=6.77% cpu : usr=0.05%, sys=28.47%, ctx=3439, 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=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=182735: Wed Aug 12 07:40:09 2026 read: IOPS=18, BW=290KiB/s (297kB/s)(5744KiB/19832msec) clat (usec): min=99, max=88815, avg=27722.88, stdev=13110.06 lat (usec): min=99, max=88815, avg=27723.58, stdev=13110.11 clat percentiles (usec): | 1.00th=[ 161], 5.00th=[11600], 10.00th=[14353], 20.00th=[17171], | 30.00th=[20055], 40.00th=[23200], 50.00th=[26084], 60.00th=[28443], | 70.00th=[31851], 80.00th=[36963], 90.00th=[46400], 95.00th=[51119], | 99.00th=[67634], 99.50th=[71828], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 159, max= 447, per=24.57%, avg=290.64, stdev=70.30, samples=39 iops : min= 9, max= 27, avg=17.54, stdev= 4.45, samples=39 write: IOPS=20, BW=330KiB/s (338kB/s)(6544KiB/19832msec); 0 zone resets clat (usec): min=1332, max=84476, avg=24049.82, stdev=14621.90 lat (usec): min=1333, max=84477, avg=24056.80, stdev=14625.59 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 6521], 10.00th=[ 8291], 20.00th=[11207], | 30.00th=[14746], 40.00th=[17695], 50.00th=[21103], 60.00th=[24511], | 70.00th=[28967], 80.00th=[34341], 90.00th=[44303], 95.00th=[55313], | 99.00th=[69731], 99.50th=[73925], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 126, max= 608, per=26.42%, avg=328.69, stdev=100.40, samples=39 iops : min= 7, max= 38, avg=19.92, stdev= 6.45, samples=39 lat (usec) : 100=0.13%, 250=1.30% lat (msec) : 2=0.13%, 4=0.26%, 10=8.46%, 20=28.26%, 50=55.21% lat (msec) : 100=6.25% cpu : usr=0.07%, sys=28.68%, ctx=3485, 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=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=182737: Wed Aug 12 07:40:09 2026 read: IOPS=19, BW=318KiB/s (325kB/s)(6256KiB/19682msec) clat (usec): min=52, max=112163, avg=26815.36, stdev=14090.66 lat (usec): min=53, max=112163, avg=26816.34, stdev=14090.84 clat percentiles (usec): | 1.00th=[ 116], 5.00th=[ 375], 10.00th=[ 12256], 20.00th=[ 16909], | 30.00th=[ 20055], 40.00th=[ 21890], 50.00th=[ 24511], 60.00th=[ 28705], | 70.00th=[ 32113], 80.00th=[ 36439], 90.00th=[ 43779], 95.00th=[ 50594], | 99.00th=[ 70779], 99.50th=[ 88605], 99.90th=[111674], 99.95th=[111674], | 99.99th=[111674] bw ( KiB/s): min= 190, max= 544, per=27.02%, avg=319.63, stdev=103.77, samples=38 iops : min= 11, max= 34, avg=19.37, stdev= 6.50, samples=38 write: IOPS=19, BW=306KiB/s (314kB/s)(6032KiB/19682msec); 0 zone resets clat (usec): min=1667, max=70170, avg=24118.24, stdev=13860.91 lat (usec): min=1667, max=70171, avg=24119.80, stdev=13861.18 clat percentiles (usec): | 1.00th=[ 3916], 5.00th=[ 6325], 10.00th=[ 8094], 20.00th=[11469], | 30.00th=[14746], 40.00th=[17695], 50.00th=[21627], 60.00th=[25297], | 70.00th=[29754], 80.00th=[36439], 90.00th=[43779], 95.00th=[50594], | 99.00th=[62653], 99.50th=[68682], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 95, max= 541, per=24.45%, avg=304.21, stdev=93.20, samples=38 iops : min= 5, max= 33, avg=18.39, stdev= 5.88, samples=38 lat (usec) : 100=0.26%, 250=1.95%, 500=0.52% lat (msec) : 2=0.26%, 4=0.26%, 10=7.29%, 20=26.30%, 50=58.07% lat (msec) : 100=4.95%, 250=0.13% cpu : usr=0.09%, sys=28.52%, ctx=3431, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182739: Wed Aug 12 07:40:09 2026 read: IOPS=19, BW=311KiB/s (319kB/s)(6032KiB/19388msec) clat (usec): min=49, max=87585, avg=26647.70, stdev=14826.93 lat (usec): min=50, max=87586, avg=26648.42, stdev=14826.94 clat percentiles (usec): | 1.00th=[ 99], 5.00th=[ 229], 10.00th=[11863], 20.00th=[15401], | 30.00th=[19268], 40.00th=[21627], 50.00th=[24511], 60.00th=[28181], | 70.00th=[31851], 80.00th=[37487], 90.00th=[43779], 95.00th=[55313], | 99.00th=[72877], 99.50th=[84411], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 94, max= 512, per=26.28%, avg=310.84, stdev=99.11, samples=38 iops : min= 5, max= 32, avg=18.79, stdev= 6.29, samples=38 write: IOPS=20, BW=323KiB/s (330kB/s)(6256KiB/19388msec); 0 zone resets clat (usec): min=3193, max=93743, avg=23608.29, stdev=14100.74 lat (usec): min=3194, max=93744, avg=23609.67, stdev=14100.81 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 6718], 10.00th=[ 7963], 20.00th=[10814], | 30.00th=[14091], 40.00th=[17171], 50.00th=[21103], 60.00th=[24773], | 70.00th=[28967], 80.00th=[35914], 90.00th=[42730], 95.00th=[51119], | 99.00th=[63701], 99.50th=[68682], 99.90th=[93848], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 191, max= 510, per=26.09%, avg=324.53, stdev=81.89, samples=38 iops : min= 11, max= 31, avg=19.68, stdev= 5.19, samples=38 lat (usec) : 50=0.13%, 100=0.39%, 250=2.08%, 500=0.78% lat (msec) : 4=0.13%, 10=9.11%, 20=26.56%, 50=54.82%, 100=5.99% cpu : usr=0.07%, sys=29.32%, ctx=3339, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1183KiB/s (1212kB/s), 290KiB/s-318KiB/s (297kB/s-325kB/s), io=23.4MiB (24.5MB), run=19388-20245msec WRITE: bw=1245KiB/s (1275kB/s), 306KiB/s-330KiB/s (314kB/s-338kB/s), io=24.6MiB (25.8MB), run=19388-20245msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182736: Wed Aug 12 07:40:11 2026 read: IOPS=16, BW=268KiB/s (274kB/s)(5920KiB/22103msec) clat (usec): min=3229, max=85146, avg=25009.21, stdev=16667.13 lat (usec): min=3230, max=85147, avg=25009.87, stdev=16667.12 clat percentiles (usec): | 1.00th=[ 3490], 5.00th=[ 7308], 10.00th=[ 8717], 20.00th=[11207], | 30.00th=[13698], 40.00th=[16712], 50.00th=[19792], 60.00th=[25297], | 70.00th=[30540], 80.00th=[36439], 90.00th=[48497], 95.00th=[60556], | 99.00th=[82314], 99.50th=[84411], 99.90th=[85459], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 31, max= 704, per=23.63%, avg=255.95, stdev=129.80, samples=43 iops : min= 1, max= 44, avg=15.56, stdev= 8.22, samples=43 write: IOPS=18, BW=288KiB/s (295kB/s)(6368KiB/22103msec); 0 zone resets clat (msec): min=5, max=145, avg=32.22, stdev=20.41 lat (msec): min=5, max=145, avg=32.22, stdev=20.41 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 40], 80.00th=[ 47], 90.00th=[ 60], 95.00th=[ 70], | 99.00th=[ 100], 99.50th=[ 105], 99.90th=[ 146], 99.95th=[ 146], | 99.99th=[ 146] bw ( KiB/s): min= 32, max= 736, per=24.40%, avg=278.16, stdev=129.86, samples=43 iops : min= 2, max= 46, avg=16.95, stdev= 8.24, samples=43 lat (msec) : 4=1.82%, 10=8.46%, 20=32.55%, 50=45.44%, 100=11.33% lat (msec) : 250=0.39% cpu : usr=0.04%, sys=15.02%, ctx=2013, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182738: Wed Aug 12 07:40:11 2026 read: IOPS=16, BW=261KiB/s (268kB/s)(5744KiB/21982msec) clat (usec): min=5728, max=89081, avg=25595.09, stdev=16932.46 lat (usec): min=5729, max=89081, avg=25595.77, stdev=16932.58 clat percentiles (usec): | 1.00th=[ 7177], 5.00th=[ 8586], 10.00th=[ 9896], 20.00th=[11994], | 30.00th=[14615], 40.00th=[17171], 50.00th=[20317], 60.00th=[23725], | 70.00th=[28443], 80.00th=[38011], 90.00th=[50070], 95.00th=[61604], | 99.00th=[81265], 99.50th=[82314], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 95, max= 672, per=23.94%, avg=259.23, stdev=116.93, samples=43 iops : min= 5, max= 42, avg=15.77, stdev= 7.35, samples=43 write: IOPS=18, BW=298KiB/s (305kB/s)(6544KiB/21982msec); 0 zone resets clat (msec): min=7, max=152, avg=31.06, stdev=19.62 lat (msec): min=7, max=152, avg=31.06, stdev=19.62 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 47], 90.00th=[ 58], 95.00th=[ 67], | 99.00th=[ 90], 99.50th=[ 112], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 126, max= 832, per=25.86%, avg=294.79, stdev=162.21, samples=43 iops : min= 7, max= 52, avg=17.98, stdev=10.33, samples=43 lat (msec) : 10=7.29%, 20=35.16%, 50=43.75%, 100=13.41%, 250=0.39% cpu : usr=0.05%, sys=15.70%, ctx=2044, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182740: Wed Aug 12 07:40:11 2026 read: IOPS=17, BW=285KiB/s (292kB/s)(6256KiB/21932msec) clat (usec): min=4273, max=90851, avg=24953.22, stdev=16400.47 lat (usec): min=4274, max=90852, avg=24954.01, stdev=16400.49 clat percentiles (usec): | 1.00th=[ 7111], 5.00th=[ 8225], 10.00th=[ 9896], 20.00th=[11731], | 30.00th=[14615], 40.00th=[17171], 50.00th=[20055], 60.00th=[22676], | 70.00th=[27657], 80.00th=[34866], 90.00th=[48497], 95.00th=[62129], | 99.00th=[79168], 99.50th=[86508], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 95, max= 896, per=26.51%, avg=287.09, stdev=161.62, samples=43 iops : min= 5, max= 56, avg=17.51, stdev=10.21, samples=43 write: IOPS=17, BW=275KiB/s (282kB/s)(6032KiB/21932msec); 0 zone resets clat (msec): min=8, max=112, avg=32.01, stdev=18.90 lat (msec): min=8, max=112, avg=32.02, stdev=18.90 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 38], 80.00th=[ 47], 90.00th=[ 60], 95.00th=[ 70], | 99.00th=[ 100], 99.50th=[ 108], 99.90th=[ 113], 99.95th=[ 113], | 99.99th=[ 113] bw ( KiB/s): min= 63, max= 608, per=23.90%, avg=272.51, stdev=116.65, samples=43 iops : min= 3, max= 38, avg=16.58, stdev= 7.43, samples=43 lat (msec) : 10=6.77%, 20=34.38%, 50=45.83%, 100=12.63%, 250=0.39% cpu : usr=0.09%, sys=15.47%, ctx=2061, 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=182741: Wed Aug 12 07:40:11 2026 read: IOPS=17, BW=274KiB/s (281kB/s)(6032KiB/21992msec) clat (msec): min=4, max=107, avg=25.41, stdev=17.29 lat (msec): min=4, max=107, avg=25.41, stdev=17.29 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 38], 90.00th=[ 50], 95.00th=[ 63], | 99.00th=[ 86], 99.50th=[ 95], 99.90th=[ 108], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 64, max= 768, per=25.12%, avg=272.07, stdev=151.77, samples=43 iops : min= 4, max= 48, avg=16.56, stdev= 9.62, samples=43 write: IOPS=17, BW=284KiB/s (291kB/s)(6256KiB/21992msec); 0 zone resets clat (msec): min=8, max=124, avg=31.37, stdev=18.78 lat (msec): min=8, max=124, avg=31.37, stdev=18.78 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 45], 90.00th=[ 57], 95.00th=[ 68], | 99.00th=[ 101], 99.50th=[ 106], 99.90th=[ 125], 99.95th=[ 125], | 99.99th=[ 125] bw ( KiB/s): min= 96, max= 736, per=24.82%, avg=282.98, stdev=128.69, samples=43 iops : min= 6, max= 46, avg=17.23, stdev= 8.19, samples=43 lat (msec) : 10=7.03%, 20=33.33%, 50=47.27%, 100=11.72%, 250=0.65% cpu : usr=0.08%, sys=15.49%, ctx=2197, 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=1084KiB/s (1110kB/s), 261KiB/s-285KiB/s (268kB/s-292kB/s), io=23.4MiB (24.5MB), run=21932-22103msec WRITE: bw=1140KiB/s (1167kB/s), 275KiB/s-298KiB/s (282kB/s-305kB/s), io=24.6MiB (25.8MB), run=21932-22103msec 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=182758: Wed Aug 12 07:40:24 2026 read: IOPS=1, BW=1643KiB/s (1682kB/s)(7168KiB/4364msec) clat (usec): min=750, max=1176.2k, avg=352998.53, stdev=380367.69 lat (usec): min=751, max=1176.2k, avg=352999.92, stdev=380367.66 clat percentiles (usec): | 1.00th=[ 750], 5.00th=[ 750], 10.00th=[ 750], | 20.00th=[ 141558], 30.00th=[ 252707], 40.00th=[ 252707], | 50.00th=[ 261096], 60.00th=[ 304088], 70.00th=[ 304088], | 80.00th=[ 337642], 90.00th=[1182794], 95.00th=[1182794], | 99.00th=[1182794], 99.50th=[1182794], 99.90th=[1182794], | 99.95th=[1182794], 99.99th=[1182794] bw ( KiB/s): min= 1744, max= 4096, per=63.25%, avg=2370.60, stdev=971.80, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 write: IOPS=1, BW=1173KiB/s (1201kB/s)(5120KiB/4364msec); 0 zone resets clat (msec): min=110, max=777, avg=360.14, stdev=250.24 lat (msec): min=110, max=777, avg=360.22, stdev=250.25 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 111], | 30.00th=[ 251], 40.00th=[ 251], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 2015, max= 2048, per=38.71%, avg=2031.25, stdev=16.66, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 1000=8.33% lat (msec) : 250=25.00%, 500=50.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.07%, sys=43.27%, ctx=1046, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182759: Wed Aug 12 07:40:24 2026 read: IOPS=0, BW=375KiB/s (384kB/s)(2048KiB/5464msec) clat (msec): min=73, max=282, avg=177.97, stdev=148.44 lat (msec): min=73, max=282, avg=177.97, stdev=148.44 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 73], | 30.00th=[ 73], 40.00th=[ 73], 50.00th=[ 73], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 284], 95.00th=[ 284], | 99.00th=[ 284], 99.50th=[ 284], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 1741, max= 2015, per=50.11%, avg=1878.00, stdev=193.75, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1874KiB/s (1919kB/s)(10.0MiB/5464msec); 0 zone resets clat (msec): min=67, max=1644, avg=505.66, stdev=501.15 lat (msec): min=67, max=1644, avg=505.74, stdev=501.14 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 88], | 30.00th=[ 197], 40.00th=[ 201], 50.00th=[ 243], 60.00th=[ 384], | 70.00th=[ 460], 80.00th=[ 776], 90.00th=[ 1003], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 2043, max= 8192, per=87.71%, avg=4602.25, stdev=3072.62, samples=4 iops : min= 1, max= 8, avg= 3.75, stdev= 3.40, samples=4 lat (msec) : 100=25.00%, 250=25.00%, 500=25.00%, 1000=8.33%, 2000=16.67% cpu : usr=0.00%, sys=36.81%, ctx=250, 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=182760: Wed Aug 12 07:40:24 2026 read: IOPS=1, BW=1410KiB/s (1444kB/s)(6144KiB/4358msec) clat (usec): min=677, max=326819, avg=196265.08, stdev=153099.16 lat (usec): min=678, max=326821, avg=196266.52, stdev=153099.60 clat percentiles (usec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 725], | 30.00th=[ 725], 40.00th=[256902], 50.00th=[256902], 60.00th=[295699], | 70.00th=[299893], 80.00th=[299893], 90.00th=[325059], 95.00th=[325059], | 99.00th=[325059], 99.50th=[325059], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 2015, max= 3893, per=66.50%, avg=2492.50, stdev=933.75, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1410KiB/s (1444kB/s)(6144KiB/4358msec); 0 zone resets clat (msec): min=280, max=1346, avg=519.90, stdev=412.51 lat (msec): min=280, max=1346, avg=519.98, stdev=412.51 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 393], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 1753, max= 2048, per=37.78%, avg=1982.20, stdev=128.69, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (usec) : 750=16.67% lat (msec) : 500=75.00%, 2000=8.33% cpu : usr=0.02%, sys=44.82%, ctx=726, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182761: Wed Aug 12 07:40:24 2026 read: IOPS=1, BW=1175KiB/s (1204kB/s)(5120KiB/4356msec) clat (usec): min=432, max=500616, avg=111943.12, stdev=218649.97 lat (usec): min=433, max=500617, avg=111944.29, stdev=218650.05 clat percentiles (usec): | 1.00th=[ 433], 5.00th=[ 433], 10.00th=[ 433], 20.00th=[ 433], | 30.00th=[ 725], 40.00th=[ 725], 50.00th=[ 758], 60.00th=[ 758], | 70.00th=[ 57410], 80.00th=[ 57410], 90.00th=[501220], 95.00th=[501220], | 99.00th=[501220], 99.50th=[501220], 99.90th=[501220], 99.95th=[501220], | 99.99th=[501220] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1646KiB/s (1685kB/s)(7168KiB/4356msec); 0 zone resets clat (msec): min=249, max=1714, avg=540.21, stdev=528.35 lat (msec): min=249, max=1714, avg=540.29, stdev=528.35 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 251], 10.00th=[ 251], 20.00th=[ 259], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 347], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 567], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 1747, max= 2048, per=37.54%, avg=1969.67, stdev=115.02, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (usec) : 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : 100=8.33%, 250=8.33%, 500=33.33%, 750=16.67%, 2000=8.33% cpu : usr=0.02%, sys=40.21%, ctx=447, 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=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=3748KiB/s (3838kB/s), 375KiB/s-1643KiB/s (384kB/s-1682kB/s), io=20.0MiB (20.0MB), run=4356-5464msec WRITE: bw=5247KiB/s (5373kB/s), 1173KiB/s-1874KiB/s (1201kB/s-1919kB/s), io=28.0MiB (29.4MB), run=4356-5464msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182763: Wed Aug 12 07:40:24 2026 read: IOPS=2, BW=2056KiB/s (2105kB/s)(7168KiB/3487msec) clat (msec): min=107, max=842, avg=303.66, stdev=248.70 lat (msec): min=107, max=842, avg=303.66, stdev=248.70 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 127], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 271], 60.00th=[ 279], | 70.00th=[ 279], 80.00th=[ 292], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 2007, max= 4096, per=80.57%, avg=2908.50, stdev=1050.04, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1468KiB/s (1504kB/s)(5120KiB/3487msec); 0 zone resets clat (msec): min=136, max=323, avg=266.15, stdev=74.83 lat (msec): min=136, max=323, avg=266.23, stdev=74.82 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 326], 95.00th=[ 326], | 99.00th=[ 326], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 2043, max= 4015, per=53.43%, avg=2700.33, stdev=1138.53, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=33.33%, 500=58.33%, 1000=8.33% cpu : usr=0.03%, sys=16.21%, ctx=163, 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=182764: Wed Aug 12 07:40:24 2026 read: IOPS=0, BW=362KiB/s (371kB/s)(2048KiB/5659msec) clat (msec): min=133, max=293, avg=213.47, stdev=113.42 lat (msec): min=133, max=293, avg=213.47, stdev=113.42 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 134], | 30.00th=[ 134], 40.00th=[ 134], 50.00th=[ 134], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 1771, max= 2048, per=52.89%, avg=1909.50, stdev=195.87, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1810KiB/s (1853kB/s)(10.0MiB/5659msec); 0 zone resets clat (msec): min=68, max=1415, avg=513.50, stdev=449.39 lat (msec): min=68, max=1415, avg=513.58, stdev=449.38 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 159], | 30.00th=[ 180], 40.00th=[ 197], 50.00th=[ 213], 60.00th=[ 388], | 70.00th=[ 751], 80.00th=[ 760], 90.00th=[ 1011], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 1861, max= 6144, per=51.35%, avg=2595.00, stdev=1566.31, samples=7 iops : min= 1, max= 6, avg= 1.86, stdev= 1.86, samples=7 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 1000=16.67%, 2000=16.67% cpu : usr=0.00%, sys=18.17%, ctx=162, 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=182765: Wed Aug 12 07:40:24 2026 read: IOPS=1, BW=1181KiB/s (1209kB/s)(6144KiB/5203msec) clat (msec): min=82, max=613, avg=281.75, stdev=176.96 lat (msec): min=82, max=613, avg=281.77, stdev=176.98 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 251], | 70.00th=[ 288], 80.00th=[ 288], 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= 1861, max= 4055, per=68.96%, avg=2489.50, stdev=1046.45, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1181KiB/s (1209kB/s)(6144KiB/5203msec); 0 zone resets clat (msec): min=75, max=1622, avg=570.22, stdev=609.92 lat (msec): min=75, max=1623, avg=570.32, stdev=609.91 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 108], | 30.00th=[ 108], 40.00th=[ 116], 50.00th=[ 116], 60.00th=[ 642], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 2007, max= 4087, per=60.27%, avg=3046.00, stdev=1183.70, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=16.67%, 250=41.67%, 500=8.33%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.02%, sys=15.65%, ctx=171, 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=182766: Wed Aug 12 07:40:24 2026 read: IOPS=0, BW=903KiB/s (924kB/s)(5120KiB/5673msec) clat (msec): min=38, max=906, avg=261.21, stdev=363.10 lat (msec): min=38, max=906, avg=261.22, stdev=363.10 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 39], 10.00th=[ 39], 20.00th=[ 39], | 30.00th=[ 95], 40.00th=[ 95], 50.00th=[ 109], 60.00th=[ 109], | 70.00th=[ 159], 80.00th=[ 159], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 4055, max= 4071, per=100.00%, avg=4063.00, stdev=11.31, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1264KiB/s (1294kB/s)(7168KiB/5673msec); 0 zone resets clat (msec): min=129, max=1509, avg=610.10, stdev=484.79 lat (msec): min=129, max=1509, avg=610.19, stdev=484.79 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 171], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 527], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 869], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 2007, max= 6144, per=56.48%, avg=2854.40, stdev=1839.00, samples=5 iops : min= 1, max= 6, avg= 2.00, stdev= 2.24, samples=5 lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=8.33%, 750=8.33% lat (msec) : 1000=25.00%, 2000=8.33% cpu : usr=0.00%, sys=23.06%, ctx=314, 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=3610KiB/s (3697kB/s), 362KiB/s-2056KiB/s (371kB/s-2105kB/s), io=20.0MiB (20.0MB), run=3487-5673msec WRITE: bw=5054KiB/s (5175kB/s), 1181KiB/s-1810KiB/s (1209kB/s-1853kB/s), io=28.0MiB (29.4MB), run=3487-5673msec 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=182777: Wed Aug 12 07:40:35 2026 read: IOPS=1, BW=4692KiB/s (4804kB/s)(12.0MiB/2619msec) clat (msec): min=331, max=1146, avg=846.90, stdev=448.36 lat (msec): min=331, max=1146, avg=846.91, stdev=448.36 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7907, max= 8192, per=100.00%, avg=8049.50, stdev=201.53, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=16.88%, ctx=106, 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=182778: Wed Aug 12 07:40:35 2026 read: IOPS=0, BW=1505KiB/s (1541kB/s)(4096KiB/2722msec) clat (nsec): min=1740.5M, max=1740.5M, avg=1740489491.00, stdev= 0.00 lat (nsec): min=1740.5M, max=1740.5M, avg=1740490538.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1737], 5.00th=[ 1737], 10.00th=[ 1737], 20.00th=[ 1737], | 30.00th=[ 1737], 40.00th=[ 1737], 50.00th=[ 1737], 60.00th=[ 1737], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3010KiB/s (3082kB/s)(8192KiB/2722msec); 0 zone resets clat (msec): min=294, max=620, avg=457.64, stdev=230.64 lat (msec): min=294, max=621, avg=457.89, stdev=230.80 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 296], 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= 7907, max= 7907, per=65.68%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=12.42%, ctx=116, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182779: Wed Aug 12 07:40:35 2026 write: IOPS=1, BW=5593KiB/s (5727kB/s)(12.0MiB/2197msec); 0 zone resets clat (msec): min=613, max=902, avg=725.21, stdev=154.93 lat (msec): min=613, max=902, avg=725.60, stdev=154.89 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 8047, max= 8175, per=67.38%, avg=8111.00, stdev=90.51, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.09%, sys=23.45%, ctx=89, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=182780: Wed Aug 12 07:40:35 2026 write: IOPS=1, BW=4635KiB/s (4746kB/s)(12.0MiB/2651msec); 0 zone resets clat (msec): min=683, max=972, avg=862.41, stdev=156.19 lat (msec): min=683, max=972, avg=862.71, stdev=156.26 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 8047, max= 8192, per=67.45%, avg=8119.50, stdev=102.53, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.04%, sys=20.30%, ctx=165, 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 Run status group 0 (all jobs): READ: bw=6019KiB/s (6164kB/s), 1505KiB/s-4692KiB/s (1541kB/s-4804kB/s), io=16.0MiB (16.8MB), run=2619-2722msec WRITE: bw=11.8MiB/s (12.3MB/s), 3010KiB/s-5593KiB/s (3082kB/s-5727kB/s), io=32.0MiB (33.6MB), run=2197-2722msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182772: Wed Aug 12 07:40:35 2026 read: IOPS=1, BW=6982KiB/s (7149kB/s)(12.0MiB/1760msec) clat (msec): min=543, max=648, avg=581.89, stdev=57.68 lat (msec): min=543, max=648, avg=581.89, stdev=57.68 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=61.25%, ctx=2998, 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=182773: Wed Aug 12 07:40:35 2026 read: IOPS=0, BW=1549KiB/s (1586kB/s)(4096KiB/2645msec) clat (nsec): min=553547k, max=553547k, avg=553547059.00, stdev= 0.00 lat (nsec): min=553548k, max=553548k, avg=553548414.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3097KiB/s (3171kB/s)(8192KiB/2645msec); 0 zone resets clat (msec): min=1023, max=1033, avg=1028.58, stdev= 6.86 lat (msec): min=1024, max=1033, avg=1028.90, stdev= 6.79 clat percentiles (msec): | 1.00th=[ 1028], 5.00th=[ 1028], 10.00th=[ 1028], 20.00th=[ 1028], | 30.00th=[ 1028], 40.00th=[ 1028], 50.00th=[ 1028], 60.00th=[ 1036], | 70.00th=[ 1036], 80.00th=[ 1036], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7757, max= 7757, per=71.49%, avg=7757.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=15.28%, ctx=942, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182774: Wed Aug 12 07:40:35 2026 write: IOPS=0, BW=4069KiB/s (4167kB/s)(12.0MiB/3020msec); 0 zone resets clat (msec): min=117, max=2179, avg=992.76, stdev=1065.83 lat (msec): min=118, max=2180, avg=993.02, stdev=1065.73 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 118], | 30.00th=[ 118], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8094, max= 8094, per=74.60%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=12.36%, ctx=94, 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=182775: Wed Aug 12 07:40:35 2026 write: IOPS=1, BW=5088KiB/s (5210kB/s)(12.0MiB/2415msec); 0 zone resets clat (msec): min=407, max=1339, avg=798.51, stdev=483.98 lat (msec): min=407, max=1339, avg=798.77, stdev=483.92 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7447, max= 8192, per=72.07%, avg=7819.50, stdev=526.79, 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=17.23%, ctx=131, 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 Run status group 0 (all jobs): READ: bw=6194KiB/s (6343kB/s), 1549KiB/s-6982KiB/s (1586kB/s-7149kB/s), io=16.0MiB (16.8MB), run=1760-2645msec WRITE: bw=10.6MiB/s (11.1MB/s), 3097KiB/s-5088KiB/s (3171kB/s-5210kB/s), io=32.0MiB (33.6MB), run=2415-3020msec