== sanity test 398b: DIO and buffer IO race ============== 09:39:56 (1788615596) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.75969 s, 8.7 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=178977: Sat Sep 5 09:41:52 2026 read: IOPS=15, BW=62.2KiB/s (63.7kB/s)(5992KiB/96279msec) clat (usec): min=33, max=161276, avg=34698.33, stdev=21656.11 lat (usec): min=33, max=161277, avg=34700.79, stdev=21655.30 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 8455], 10.00th=[ 13042], 20.00th=[ 17695], | 30.00th=[ 21365], 40.00th=[ 25560], 50.00th=[ 30278], 60.00th=[ 35914], | 70.00th=[ 42206], 80.00th=[ 50070], 90.00th=[ 62653], 95.00th=[ 74974], | 99.00th=[106431], 99.50th=[120062], 99.90th=[158335], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 15, max= 142, per=25.18%, avg=61.95, stdev=21.14, samples=189 iops : min= 3, max= 35, avg=14.84, stdev= 5.31, samples=189 write: IOPS=16, BW=65.4KiB/s (66.0kB/s)(6296KiB/96279msec); 0 zone resets clat (usec): min=671, max=983523, avg=27869.09, stdev=36478.85 lat (usec): min=672, max=983525, avg=27873.46, stdev=36478.95 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1156], 10.00th=[ 1287], 20.00th=[ 2966], | 30.00th=[ 6325], 40.00th=[ 15008], 50.00th=[ 20579], 60.00th=[ 26346], | 70.00th=[ 33817], 80.00th=[ 46400], 90.00th=[ 65274], 95.00th=[ 79168], | 99.00th=[125305], 99.50th=[143655], 99.90th=[198181], 99.95th=[985662], | 99.99th=[985662] bw ( KiB/s): min= 7, max= 141, per=25.41%, avg=65.57, stdev=25.08, samples=188 iops : min= 1, max= 35, avg=15.74, stdev= 6.30, samples=188 lat (usec) : 50=0.33%, 100=1.53%, 250=0.10%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.52% lat (msec) : 2=7.39%, 4=4.23%, 10=6.15%, 20=17.87%, 50=42.81% lat (msec) : 100=17.06%, 250=1.89%, 1000=0.03% cpu : usr=0.09%, sys=6.06%, ctx=6556, 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=178978: Sat Sep 5 09:41:52 2026 read: IOPS=15, BW=62.4KiB/s (63.9kB/s)(5940KiB/95128msec) clat (usec): min=31, max=233846, avg=34269.80, stdev=22195.10 lat (usec): min=32, max=233848, avg=34275.90, stdev=22195.99 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 8586], 10.00th=[ 13173], 20.00th=[ 17695], | 30.00th=[ 21627], 40.00th=[ 25035], 50.00th=[ 29492], 60.00th=[ 34341], | 70.00th=[ 41681], 80.00th=[ 48497], 90.00th=[ 60556], 95.00th=[ 73925], | 99.00th=[107480], 99.50th=[125305], 99.90th=[198181], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 7, max= 126, per=25.29%, avg=62.22, stdev=22.57, samples=187 iops : min= 1, max= 31, avg=14.90, stdev= 5.65, samples=187 write: IOPS=16, BW=66.7KiB/s (68.3kB/s)(6348KiB/95128msec); 0 zone resets clat (usec): min=721, max=1033.1k, avg=27611.87, stdev=37626.46 lat (usec): min=722, max=1033.1k, avg=27613.86, stdev=37626.24 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 1156], 10.00th=[ 1287], | 20.00th=[ 2507], 30.00th=[ 5211], 40.00th=[ 12256], | 50.00th=[ 19530], 60.00th=[ 26870], 70.00th=[ 35390], | 80.00th=[ 47449], 90.00th=[ 64750], 95.00th=[ 83362], | 99.00th=[ 122160], 99.50th=[ 143655], 99.90th=[ 175113], | 99.95th=[1035994], 99.99th=[1035994] bw ( KiB/s): min= 7, max= 151, per=25.72%, avg=66.36, stdev=26.05, samples=187 iops : min= 1, max= 37, avg=15.95, stdev= 6.56, samples=187 lat (usec) : 50=0.46%, 100=1.50%, 250=0.07%, 750=0.07%, 1000=0.59% lat (msec) : 2=8.40%, 4=5.11%, 10=6.18%, 20=16.57%, 50=43.07% lat (msec) : 100=15.98%, 250=1.99%, 2000=0.03% cpu : usr=0.08%, sys=5.92%, ctx=6374, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178979: Sat Sep 5 09:41:52 2026 read: IOPS=16, BW=64.1KiB/s (65.7kB/s)(6028KiB/94012msec) clat (usec): min=36, max=1027.4k, avg=34738.72, stdev=33824.21 lat (usec): min=37, max=1027.4k, avg=34740.26, stdev=33824.07 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 8586], 10.00th=[ 12649], | 20.00th=[ 16909], 30.00th=[ 20841], 40.00th=[ 24773], | 50.00th=[ 30278], 60.00th=[ 35914], 70.00th=[ 41157], | 80.00th=[ 47973], 90.00th=[ 60031], 95.00th=[ 72877], | 99.00th=[ 119014], 99.50th=[ 137364], 99.90th=[ 175113], | 99.95th=[1027605], 99.99th=[1027605] bw ( KiB/s): min= 15, max= 134, per=25.98%, avg=63.92, stdev=21.74, samples=185 iops : min= 3, max= 33, avg=15.34, stdev= 5.47, samples=185 write: IOPS=16, BW=66.6KiB/s (68.2kB/s)(6260KiB/94012msec); 0 zone resets clat (usec): min=737, max=145624, avg=26348.13, stdev=26071.59 lat (usec): min=738, max=145625, avg=26350.76, stdev=26070.82 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1139], 10.00th=[ 1319], 20.00th=[ 2671], | 30.00th=[ 5473], 40.00th=[ 12387], 50.00th=[ 19792], 60.00th=[ 26346], | 70.00th=[ 34341], 80.00th=[ 46400], 90.00th=[ 63701], 95.00th=[ 79168], | 99.00th=[108528], 99.50th=[121111], 99.90th=[139461], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 7, max= 150, per=25.89%, avg=66.79, stdev=25.64, samples=184 iops : min= 1, max= 37, avg=16.05, stdev= 6.44, samples=184 lat (usec) : 50=0.46%, 100=1.56%, 250=0.07%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.49% lat (msec) : 2=7.58%, 4=5.05%, 10=6.61%, 20=17.25%, 50=43.49% lat (msec) : 100=15.56%, 250=1.79%, 2000=0.03% cpu : usr=0.09%, sys=5.97%, ctx=6506, 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=178980: Sat Sep 5 09:41:52 2026 read: IOPS=15, BW=62.2KiB/s (63.7kB/s)(6052KiB/97285msec) clat (usec): min=35, max=187770, avg=34768.60, stdev=22512.93 lat (usec): min=35, max=187771, avg=34769.89, stdev=22512.95 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 523], 10.00th=[ 13173], 20.00th=[ 17695], | 30.00th=[ 21365], 40.00th=[ 25822], 50.00th=[ 30278], 60.00th=[ 35390], | 70.00th=[ 42206], 80.00th=[ 50594], 90.00th=[ 62653], 95.00th=[ 76022], | 99.00th=[107480], 99.50th=[121111], 99.90th=[179307], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 15, max= 127, per=25.32%, avg=62.29, stdev=21.41, samples=190 iops : min= 3, max= 31, avg=14.93, stdev= 5.40, samples=190 write: IOPS=16, BW=64.1KiB/s (65.6kB/s)(6236KiB/97285msec); 0 zone resets clat (usec): min=734, max=1038.4k, avg=28384.94, stdev=37536.48 lat (usec): min=734, max=1038.4k, avg=28387.85, stdev=37535.81 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 1156], 10.00th=[ 1385], | 20.00th=[ 2868], 30.00th=[ 5735], 40.00th=[ 13435], | 50.00th=[ 20317], 60.00th=[ 28443], 70.00th=[ 37487], | 80.00th=[ 49546], 90.00th=[ 65274], 95.00th=[ 80217], | 99.00th=[ 112722], 99.50th=[ 135267], 99.90th=[ 202376], | 99.95th=[1035994], 99.99th=[1035994] bw ( KiB/s): min= 15, max= 151, per=24.76%, avg=63.88, stdev=25.32, samples=191 iops : min= 3, max= 37, avg=15.32, stdev= 6.36, samples=191 lat (usec) : 50=0.33%, 100=2.02%, 250=0.03%, 500=0.07%, 750=0.10% lat (usec) : 1000=0.55% lat (msec) : 2=6.93%, 4=5.24%, 10=6.32%, 20=16.50%, 50=41.67% lat (msec) : 100=18.52%, 250=1.69%, 2000=0.03% cpu : usr=0.08%, sys=5.90%, ctx=6627, 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=247KiB/s (253kB/s), 62.2KiB/s-64.1KiB/s (63.7kB/s-65.7kB/s), io=23.4MiB (24.6MB), run=94012-97285msec WRITE: bw=258KiB/s (265kB/s), 64.1KiB/s-66.7KiB/s (65.6kB/s-68.3kB/s), io=24.6MiB (25.7MB), run=94012-97285msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178981: Sat Sep 5 09:42:25 2026 read: IOPS=11, BW=45.0KiB/s (47.1kB/s)(5992KiB/130357msec) clat (msec): min=5, max=964, avg=33.61, stdev=37.61 lat (msec): min=5, max=964, avg=33.61, stdev=37.61 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 72], 95.00th=[ 94], | 99.00th=[ 155], 99.50th=[ 171], 99.90th=[ 224], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 134, per=25.08%, avg=45.89, stdev=27.81, samples=255 iops : min= 1, max= 33, avg=10.86, stdev= 7.02, samples=255 write: IOPS=12, BW=48.3KiB/s (49.5kB/s)(6296KiB/130357msec); 0 zone resets clat (msec): min=11, max=253, avg=50.58, stdev=32.56 lat (msec): min=11, max=253, avg=50.58, stdev=32.56 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 41], 60.00th=[ 49], | 70.00th=[ 59], 80.00th=[ 74], 90.00th=[ 95], 95.00th=[ 113], | 99.00th=[ 165], 99.50th=[ 184], 99.90th=[ 239], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 7, max= 148, per=25.02%, avg=48.04, stdev=26.77, samples=256 iops : min= 1, max= 37, avg=11.39, stdev= 6.75, samples=256 lat (msec) : 10=3.45%, 20=22.20%, 50=46.45%, 100=21.97%, 250=5.86% lat (msec) : 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=1.92%, ctx=4646, 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=178982: Sat Sep 5 09:42:25 2026 read: IOPS=11, BW=45.4KiB/s (46.5kB/s)(5940KiB/130806msec) clat (msec): min=4, max=1069, avg=33.84, stdev=40.20 lat (msec): min=4, max=1069, avg=33.84, stdev=40.20 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 45], 90.00th=[ 77], 95.00th=[ 97], | 99.00th=[ 157], 99.50th=[ 171], 99.90th=[ 220], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 143, per=24.81%, avg=45.39, stdev=29.10, samples=256 iops : min= 1, max= 35, avg=10.74, stdev= 7.33, samples=256 write: IOPS=12, BW=48.5KiB/s (49.7kB/s)(6348KiB/130806msec); 0 zone resets clat (msec): min=8, max=277, avg=50.52, stdev=32.85 lat (msec): min=8, max=277, avg=50.53, stdev=32.85 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 30], 40.00th=[ 34], 50.00th=[ 41], 60.00th=[ 50], | 70.00th=[ 60], 80.00th=[ 75], 90.00th=[ 93], 95.00th=[ 113], | 99.00th=[ 163], 99.50th=[ 194], 99.90th=[ 251], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 7, max= 143, per=25.13%, avg=48.25, stdev=26.99, samples=257 iops : min= 1, max= 35, avg=11.45, stdev= 6.80, samples=257 lat (msec) : 10=4.30%, 20=22.04%, 50=44.79%, 100=22.62%, 250=6.15% lat (msec) : 500=0.07%, 2000=0.03% cpu : usr=0.06%, sys=1.92%, ctx=4636, 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=178983: Sat Sep 5 09:42:25 2026 read: IOPS=11, BW=46.1KiB/s (47.3kB/s)(6028KiB/130630msec) clat (msec): min=4, max=247, avg=33.14, stdev=28.10 lat (msec): min=4, max=247, avg=33.14, stdev=28.10 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 68], 95.00th=[ 96], | 99.00th=[ 144], 99.50th=[ 163], 99.90th=[ 230], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 7, max= 167, per=25.32%, avg=46.34, stdev=28.06, samples=255 iops : min= 1, max= 41, avg=10.97, stdev= 7.07, samples=255 write: IOPS=11, BW=47.9KiB/s (49.1kB/s)(6260KiB/130630msec); 0 zone resets clat (msec): min=9, max=1173, avg=51.31, stdev=43.02 lat (msec): min=9, max=1173, avg=51.32, stdev=43.02 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 49], | 70.00th=[ 58], 80.00th=[ 73], 90.00th=[ 95], 95.00th=[ 114], | 99.00th=[ 169], 99.50th=[ 192], 99.90th=[ 245], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 15, max= 135, per=24.87%, avg=47.74, stdev=26.36, samples=257 iops : min= 3, max= 33, avg=11.32, stdev= 6.65, samples=257 lat (msec) : 10=4.10%, 20=20.48%, 50=47.04%, 100=21.97%, 250=6.38% lat (msec) : 2000=0.03% cpu : usr=0.08%, sys=1.98%, ctx=4666, 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=178984: Sat Sep 5 09:42:25 2026 read: IOPS=11, BW=46.3KiB/s (47.4kB/s)(6052KiB/130824msec) clat (msec): min=5, max=233, avg=33.67, stdev=29.30 lat (msec): min=5, max=233, avg=33.67, stdev=29.30 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 48], 90.00th=[ 75], 95.00th=[ 96], | 99.00th=[ 144], 99.50th=[ 174], 99.90th=[ 228], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 7, max= 159, per=25.46%, avg=46.60, stdev=27.45, samples=254 iops : min= 1, max= 39, avg=11.04, stdev= 6.90, samples=254 write: IOPS=11, BW=47.7KiB/s (48.8kB/s)(6236KiB/130824msec); 0 zone resets clat (msec): min=9, max=1160, avg=50.98, stdev=44.17 lat (msec): min=9, max=1160, avg=50.98, stdev=44.17 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 40], 60.00th=[ 47], | 70.00th=[ 58], 80.00th=[ 73], 90.00th=[ 96], 95.00th=[ 120], | 99.00th=[ 171], 99.50th=[ 209], 99.90th=[ 271], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 136, per=24.64%, avg=47.30, stdev=27.17, samples=257 iops : min= 1, max= 34, avg=11.21, stdev= 6.86, samples=257 lat (msec) : 10=3.78%, 20=21.39%, 50=47.40%, 100=20.80%, 250=6.54% lat (msec) : 500=0.07%, 2000=0.03% cpu : usr=0.07%, sys=1.99%, ctx=4686, 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=184KiB/s (188kB/s), 45.4KiB/s-46.3KiB/s (46.5kB/s-47.4kB/s), io=23.4MiB (24.6MB), run=130357-130824msec WRITE: bw=192KiB/s (197kB/s), 47.7KiB/s-48.5KiB/s (48.8kB/s-49.7kB/s), io=24.6MiB (25.7MB), run=130357-130824msec 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=179018: Sat Sep 5 09:43:05 2026 read: IOPS=12, BW=206KiB/s (211kB/s)(5920KiB/28791msec) clat (usec): min=50, max=171964, avg=41411.34, stdev=28865.27 lat (usec): min=51, max=171965, avg=41412.77, stdev=28865.49 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 64], 10.00th=[ 77], 20.00th=[ 20317], | 30.00th=[ 26870], 40.00th=[ 31327], 50.00th=[ 37487], 60.00th=[ 44303], | 70.00th=[ 50070], 80.00th=[ 58983], 90.00th=[ 81265], 95.00th=[ 96994], | 99.00th=[132645], 99.50th=[149947], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 31, max= 408, per=26.29%, avg=204.79, stdev=84.70, samples=56 iops : min= 1, max= 25, avg=12.04, stdev= 5.36, samples=56 write: IOPS=13, BW=221KiB/s (226kB/s)(6368KiB/28791msec); 0 zone resets clat (usec): min=1161, max=183125, avg=33580.98, stdev=35279.50 lat (usec): min=1163, max=183126, avg=33596.63, stdev=35281.03 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1713], 10.00th=[ 2212], 20.00th=[ 4359], | 30.00th=[ 8160], 40.00th=[ 13566], 50.00th=[ 23725], 60.00th=[ 31851], | 70.00th=[ 42730], 80.00th=[ 56361], 90.00th=[ 80217], 95.00th=[105382], | 99.00th=[168821], 99.50th=[177210], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 63, max= 440, per=27.05%, avg=221.84, stdev=95.02, samples=56 iops : min= 3, max= 27, avg=13.11, stdev= 5.96, samples=56 lat (usec) : 100=5.73%, 250=0.13%, 500=0.13% lat (msec) : 2=5.08%, 4=5.08%, 10=7.68%, 20=8.85%, 50=40.62% lat (msec) : 100=22.14%, 250=4.56% cpu : usr=0.05%, sys=5.58%, ctx=1585, 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=179020: Sat Sep 5 09:43:05 2026 read: IOPS=11, BW=188KiB/s (192kB/s)(5744KiB/30633msec) clat (usec): min=38, max=228544, avg=44806.54, stdev=28985.94 lat (usec): min=38, max=228546, avg=44807.75, stdev=28985.90 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 70], 10.00th=[ 15139], 20.00th=[ 23725], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 39584], 60.00th=[ 46400], | 70.00th=[ 54264], 80.00th=[ 64226], 90.00th=[ 81265], 95.00th=[ 99091], | 99.00th=[141558], 99.50th=[166724], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 23, max= 383, per=24.24%, avg=188.83, stdev=90.22, samples=60 iops : min= 1, max= 23, avg=11.02, stdev= 5.66, samples=60 write: IOPS=13, BW=214KiB/s (219kB/s)(6544KiB/30633msec); 0 zone resets clat (usec): min=1280, max=289316, avg=34780.86, stdev=37674.78 lat (usec): min=1282, max=289318, avg=34783.24, stdev=37674.69 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1762], 10.00th=[ 2343], 20.00th=[ 4817], | 30.00th=[ 8029], 40.00th=[ 13829], 50.00th=[ 22676], 60.00th=[ 33162], | 70.00th=[ 44303], 80.00th=[ 60031], 90.00th=[ 83362], 95.00th=[104334], | 99.00th=[162530], 99.50th=[179307], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 31, max= 510, per=26.45%, avg=216.90, stdev=92.29, samples=59 iops : min= 1, max= 31, avg=12.80, stdev= 5.83, samples=59 lat (usec) : 50=0.26%, 100=2.60%, 250=0.26%, 500=0.26% lat (msec) : 2=4.30%, 4=4.82%, 10=8.72%, 20=10.68%, 50=38.02% lat (msec) : 100=24.74%, 250=5.21%, 500=0.13% cpu : usr=0.06%, sys=5.47%, ctx=1660, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179023: Sat Sep 5 09:43:05 2026 read: IOPS=12, BW=204KiB/s (208kB/s)(6256KiB/30725msec) clat (usec): min=33, max=199628, avg=42644.00, stdev=31252.12 lat (usec): min=34, max=199629, avg=42649.96, stdev=31250.53 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 59], 10.00th=[ 83], 20.00th=[ 20317], | 30.00th=[ 26346], 40.00th=[ 33162], 50.00th=[ 38536], 60.00th=[ 43779], | 70.00th=[ 51119], 80.00th=[ 61604], 90.00th=[ 78119], 95.00th=[105382], | 99.00th=[154141], 99.50th=[183501], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 62, max= 411, per=26.14%, avg=203.60, stdev=88.28, samples=60 iops : min= 3, max= 25, avg=11.97, stdev= 5.55, samples=60 write: IOPS=12, BW=196KiB/s (201kB/s)(6032KiB/30725msec); 0 zone resets clat (usec): min=1000, max=223761, avg=36309.74, stdev=37121.30 lat (usec): min=1000, max=223762, avg=36320.99, stdev=37114.56 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1926], 10.00th=[ 2769], 20.00th=[ 5473], | 30.00th=[ 9765], 40.00th=[ 16909], 50.00th=[ 24511], 60.00th=[ 36963], | 70.00th=[ 47449], 80.00th=[ 60031], 90.00th=[ 80217], 95.00th=[111674], | 99.00th=[166724], 99.50th=[223347], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 63, max= 447, per=23.47%, avg=192.43, stdev=82.96, samples=60 iops : min= 3, max= 27, avg=11.27, stdev= 5.20, samples=60 lat (usec) : 50=1.30%, 100=4.04%, 250=0.13%, 500=0.26%, 1000=0.13% lat (msec) : 2=2.73%, 4=4.30%, 10=8.07%, 20=10.55%, 50=38.02% lat (msec) : 100=24.35%, 250=6.12% cpu : usr=0.06%, sys=5.23%, ctx=1685, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179025: Sat Sep 5 09:43:05 2026 read: IOPS=12, BW=199KiB/s (204kB/s)(6032KiB/30273msec) clat (usec): min=38, max=183530, avg=43803.51, stdev=30724.46 lat (usec): min=39, max=183532, avg=43808.54, stdev=30728.05 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 60], 10.00th=[ 89], 20.00th=[ 19530], | 30.00th=[ 26084], 40.00th=[ 32637], 50.00th=[ 40633], 60.00th=[ 47973], | 70.00th=[ 55313], 80.00th=[ 66847], 90.00th=[ 83362], 95.00th=[ 99091], | 99.00th=[149947], 99.50th=[162530], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 31, max= 442, per=25.35%, avg=197.49, stdev=89.10, samples=59 iops : min= 1, max= 27, avg=11.58, stdev= 5.64, samples=59 write: IOPS=12, BW=207KiB/s (212kB/s)(6256KiB/30273msec); 0 zone resets clat (usec): min=1461, max=201863, avg=34212.16, stdev=35164.05 lat (usec): min=1463, max=201865, avg=34215.36, stdev=35166.82 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1762], 10.00th=[ 2933], 20.00th=[ 5538], | 30.00th=[ 9503], 40.00th=[ 16909], 50.00th=[ 23987], 60.00th=[ 31065], | 70.00th=[ 41157], 80.00th=[ 56886], 90.00th=[ 81265], 95.00th=[104334], | 99.00th=[164627], 99.50th=[200279], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 62, max= 534, per=25.16%, avg=206.31, stdev=98.99, samples=59 iops : min= 3, max= 33, avg=12.14, stdev= 6.28, samples=59 lat (usec) : 50=0.39%, 100=4.69%, 250=0.13%, 750=0.13%, 1000=0.13% lat (msec) : 2=3.39%, 4=4.17%, 10=9.24%, 20=10.16%, 50=37.37% lat (msec) : 100=25.00%, 250=5.21% cpu : usr=0.08%, sys=5.11%, ctx=1632, 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=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=780KiB/s (798kB/s), 188KiB/s-206KiB/s (192kB/s-211kB/s), io=23.4MiB (24.5MB), run=28791-30725msec WRITE: bw=820KiB/s (840kB/s), 196KiB/s-221KiB/s (201kB/s-226kB/s), io=24.6MiB (25.8MB), run=28791-30725msec fio: pid=179019, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=179019: Sat Sep 5 09:43:17 2026 read: IOPS=7, BW=113KiB/s (115kB/s)(3904KiB/34650msec) clat (msec): min=9, max=251, avg=59.62, stdev=48.45 lat (msec): min=9, max=251, avg=59.62, stdev=48.45 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 43], 60.00th=[ 56], | 70.00th=[ 67], 80.00th=[ 92], 90.00th=[ 125], 95.00th=[ 159], | 99.00th=[ 239], 99.50th=[ 241], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 29, max= 250, per=21.81%, avg=113.61, stdev=58.14, samples=67 iops : min= 1, max= 15, avg= 6.27, stdev= 3.69, samples=67 write: IOPS=7, BW=126KiB/s (129kB/s)(4368KiB/34650msec); 0 zone resets clat (msec): min=15, max=333, avg=72.07, stdev=48.08 lat (msec): min=15, max=333, avg=72.07, stdev=48.08 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 43], 40.00th=[ 50], 50.00th=[ 58], 60.00th=[ 70], | 70.00th=[ 84], 80.00th=[ 99], 90.00th=[ 136], 95.00th=[ 165], | 99.00th=[ 271], 99.50th=[ 271], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 22, max= 350, per=22.88%, avg=126.07, stdev=73.69, samples=68 iops : min= 1, max= 21, avg= 7.07, stdev= 4.62, samples=68 lat (msec) : 10=0.19%, 20=6.56%, 50=40.73%, 100=35.14%, 250=16.41% lat (msec) : 500=0.77% cpu : usr=0.01%, sys=1.43%, ctx=707, 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=245,273,0,0 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=179021: Sat Sep 5 09:43:17 2026 read: IOPS=8, BW=139KiB/s (142kB/s)(5744KiB/41292msec) clat (msec): min=6, max=238, avg=42.57, stdev=39.11 lat (msec): min=6, max=238, avg=42.58, stdev=39.11 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 96], 95.00th=[ 127], | 99.00th=[ 222], 99.50th=[ 236], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 30, max= 506, per=27.59%, avg=143.73, stdev=98.28, samples=78 iops : min= 1, max= 31, avg= 8.17, stdev= 6.18, samples=78 write: IOPS=9, BW=158KiB/s (162kB/s)(6544KiB/41292msec); 0 zone resets clat (msec): min=12, max=275, avg=62.94, stdev=45.27 lat (msec): min=12, max=275, avg=62.95, stdev=45.27 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 31], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 88], 90.00th=[ 120], 95.00th=[ 165], | 99.00th=[ 220], 99.50th=[ 251], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 440, per=28.74%, avg=158.38, stdev=94.76, samples=81 iops : min= 1, max= 27, avg= 9.11, stdev= 5.97, samples=81 lat (msec) : 10=2.08%, 20=13.54%, 50=48.96%, 100=22.01%, 250=13.02% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=1.61%, ctx=1157, 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=179022: Sat Sep 5 09:43:17 2026 read: IOPS=9, BW=153KiB/s (157kB/s)(6256KiB/40772msec) clat (msec): min=7, max=254, avg=44.05, stdev=39.37 lat (msec): min=7, max=254, avg=44.06, stdev=39.37 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 59], 90.00th=[ 90], 95.00th=[ 125], | 99.00th=[ 222], 99.50th=[ 230], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 31, max= 480, per=29.51%, avg=153.72, stdev=103.95, samples=80 iops : min= 1, max= 30, avg= 8.81, stdev= 6.55, samples=80 write: IOPS=9, BW=148KiB/s (151kB/s)(6032KiB/40772msec); 0 zone resets clat (msec): min=14, max=334, avg=62.15, stdev=45.50 lat (msec): min=14, max=334, avg=62.16, stdev=45.50 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 91], 90.00th=[ 118], 95.00th=[ 153], | 99.00th=[ 241], 99.50th=[ 266], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 377, per=26.67%, avg=146.94, stdev=86.51, samples=80 iops : min= 1, max= 23, avg= 8.39, stdev= 5.43, samples=80 lat (msec) : 10=1.30%, 20=13.02%, 50=49.48%, 100=23.57%, 250=12.11% lat (msec) : 500=0.52% cpu : usr=0.04%, sys=1.64%, ctx=1175, 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=179024: Sat Sep 5 09:43:17 2026 read: IOPS=8, BW=143KiB/s (147kB/s)(6032KiB/42096msec) clat (msec): min=5, max=249, avg=44.34, stdev=38.77 lat (msec): min=5, max=249, avg=44.34, stdev=38.77 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 66], 90.00th=[ 103], 95.00th=[ 132], | 99.00th=[ 190], 99.50th=[ 201], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 22, max= 415, per=27.98%, avg=145.76, stdev=95.52, samples=80 iops : min= 1, max= 25, avg= 8.31, stdev= 5.99, samples=80 write: IOPS=9, BW=149KiB/s (152kB/s)(6256KiB/42096msec); 0 zone resets clat (msec): min=13, max=284, avg=64.23, stdev=48.94 lat (msec): min=13, max=284, avg=64.24, stdev=48.94 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 35], 40.00th=[ 40], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 67], 80.00th=[ 89], 90.00th=[ 136], 95.00th=[ 180], | 99.00th=[ 253], 99.50th=[ 266], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 382, per=27.06%, avg=149.07, stdev=91.31, samples=81 iops : min= 1, max= 23, avg= 8.52, stdev= 5.74, samples=81 lat (msec) : 10=1.04%, 20=15.23%, 50=46.61%, 100=23.70%, 250=12.89% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.73%, ctx=1252, 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=521KiB/s (534kB/s), 113KiB/s-153KiB/s (115kB/s-157kB/s), io=21.4MiB (22.5MB), run=34650-42096msec WRITE: bw=551KiB/s (564kB/s), 126KiB/s-158KiB/s (129kB/s-162kB/s), io=22.7MiB (23.8MB), run=34650-42096msec 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=179049: Sat Sep 5 09:43:36 2026 read: IOPS=1, BW=1414KiB/s (1448kB/s)(7168KiB/5070msec) clat (usec): min=588, max=341991, avg=180893.50, stdev=125710.34 lat (usec): min=589, max=341993, avg=180894.90, stdev=125710.19 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[ 83362], | 30.00th=[139461], 40.00th=[139461], 50.00th=[143655], 60.00th=[231736], | 70.00th=[231736], 80.00th=[325059], 90.00th=[341836], 95.00th=[341836], | 99.00th=[341836], 99.50th=[341836], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 2031, max= 4837, per=75.08%, avg=2734.50, stdev=1401.67, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=0, BW=1010KiB/s (1034kB/s)(5120KiB/5070msec); 0 zone resets clat (msec): min=296, max=1429, avg=709.30, stdev=560.94 lat (msec): min=296, max=1429, avg=709.39, stdev=560.94 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 1917, max= 4087, per=52.53%, avg=2678.33, stdev=1221.27, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 2000=16.67% cpu : usr=0.00%, sys=9.31%, ctx=224, 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=179050: Sat Sep 5 09:43:36 2026 read: IOPS=0, BW=364KiB/s (373kB/s)(2048KiB/5622msec) clat (msec): min=68, max=1502, avg=785.55, stdev=1013.42 lat (msec): min=68, max=1502, avg=785.55, stdev=1013.42 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 69], | 30.00th=[ 69], 40.00th=[ 69], 50.00th=[ 69], 60.00th=[ 1502], | 70.00th=[ 1502], 80.00th=[ 1502], 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= 2031, max= 2043, per=55.93%, avg=2037.00, stdev= 8.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1821KiB/s (1865kB/s)(10.0MiB/5622msec); 0 zone resets clat (msec): min=195, max=885, avg=399.41, stdev=194.53 lat (msec): min=196, max=885, avg=399.64, stdev=194.37 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 268], | 30.00th=[ 284], 40.00th=[ 334], 50.00th=[ 338], 60.00th=[ 363], | 70.00th=[ 388], 80.00th=[ 401], 90.00th=[ 542], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 1831, max= 4079, per=52.18%, avg=2660.67, stdev=1095.22, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 100=8.33%, 250=8.33%, 500=58.33%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=13.33%, ctx=443, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179051: Sat Sep 5 09:43:36 2026 read: IOPS=1, BW=1227KiB/s (1257kB/s)(6144KiB/5006msec) clat (usec): min=507, max=311945, avg=222966.02, stdev=113212.35 lat (usec): min=508, max=311947, avg=222967.60, stdev=113212.52 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[217056], | 30.00th=[217056], 40.00th=[263193], 50.00th=[263193], 60.00th=[270533], | 70.00th=[274727], 80.00th=[274727], 90.00th=[312476], 95.00th=[312476], | 99.00th=[312476], 99.50th=[312476], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 1996, max= 4087, per=74.34%, avg=2707.33, stdev=1195.02, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1227KiB/s (1257kB/s)(6144KiB/5006msec); 0 zone resets clat (msec): min=153, max=1562, avg=544.89, stdev=527.05 lat (msec): min=153, max=1562, avg=544.97, stdev=527.07 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 249], 50.00th=[ 249], 60.00th=[ 472], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 1917, max= 2039, per=39.28%, avg=2002.80, stdev=50.77, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=11.21%, ctx=148, 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=179052: Sat Sep 5 09:43:36 2026 read: IOPS=1, BW=1065KiB/s (1091kB/s)(5120KiB/4806msec) clat (usec): min=1495, max=263016, avg=125664.93, stdev=116973.89 lat (usec): min=1497, max=263017, avg=125666.27, stdev=116973.84 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1500], 10.00th=[ 1500], 20.00th=[ 1500], | 30.00th=[ 21103], 40.00th=[ 21103], 50.00th=[119014], 60.00th=[119014], | 70.00th=[223347], 80.00th=[223347], 90.00th=[263193], 95.00th=[263193], | 99.00th=[263193], 99.50th=[263193], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 4079, max= 4087, per=100.00%, avg=4083.00, stdev= 5.66, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1491KiB/s (1527kB/s)(7168KiB/4806msec); 0 zone resets clat (msec): min=195, max=1697, avg=542.36, stdev=520.62 lat (msec): min=195, max=1698, avg=542.43, stdev=520.63 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 218], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 388], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 472], 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= 1917, max= 4063, per=47.25%, avg=2409.20, stdev=925.76, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 2=8.33%, 50=8.33%, 250=33.33%, 500=41.67%, 2000=8.33% cpu : usr=0.00%, sys=10.34%, ctx=173, 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=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=3643KiB/s (3730kB/s), 364KiB/s-1414KiB/s (373kB/s-1448kB/s), io=20.0MiB (20.0MB), run=4806-5622msec WRITE: bw=5100KiB/s (5222kB/s), 1010KiB/s-1821KiB/s (1034kB/s-1865kB/s), io=28.0MiB (29.4MB), run=4806-5622msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179045: Sat Sep 5 09:43:36 2026 read: IOPS=1, BW=1655KiB/s (1695kB/s)(7168KiB/4330msec) clat (msec): min=84, max=416, avg=177.55, stdev=117.68 lat (msec): min=84, max=416, avg=177.55, stdev=117.68 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 97], | 30.00th=[ 109], 40.00th=[ 109], 50.00th=[ 123], 60.00th=[ 182], | 70.00th=[ 182], 80.00th=[ 234], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 2027, max= 4711, per=100.00%, avg=3605.67, stdev=1403.21, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1182KiB/s (1211kB/s)(5120KiB/4330msec); 0 zone resets clat (msec): min=165, max=1398, avg=604.56, stdev=500.11 lat (msec): min=165, max=1398, avg=604.80, stdev=500.04 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 264], 40.00th=[ 264], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 1984, max= 2039, per=41.59%, avg=2010.50, stdev=26.64, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=3.14%, ctx=74, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179046: Sat Sep 5 09:43:36 2026 read: IOPS=0, BW=345KiB/s (354kB/s)(2048KiB/5931msec) clat (msec): min=119, max=1345, avg=732.51, stdev=866.43 lat (msec): min=119, max=1345, avg=732.51, stdev=866.44 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 121], | 30.00th=[ 121], 40.00th=[ 121], 50.00th=[ 121], 60.00th=[ 1351], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 1992, max= 2035, per=58.31%, avg=2013.50, stdev=30.41, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1727KiB/s (1768kB/s)(10.0MiB/5931msec); 0 zone resets clat (msec): min=197, max=684, avg=420.35, stdev=192.73 lat (msec): min=197, max=684, avg=420.48, stdev=192.75 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 211], | 30.00th=[ 236], 40.00th=[ 255], 50.00th=[ 359], 60.00th=[ 468], | 70.00th=[ 542], 80.00th=[ 592], 90.00th=[ 667], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1984, max= 4055, per=47.86%, avg=2313.43, stdev=768.22, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=33.33%, 500=25.00%, 750=33.33%, 2000=8.33% cpu : usr=0.05%, sys=5.97%, ctx=129, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179047: Sat Sep 5 09:43:36 2026 read: IOPS=1, BW=1094KiB/s (1120kB/s)(6144KiB/5617msec) clat (msec): min=114, max=972, avg=321.05, stdev=329.27 lat (msec): min=114, max=972, avg=321.05, stdev=329.27 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 150], 50.00th=[ 150], 60.00th=[ 215], | 70.00th=[ 338], 80.00th=[ 338], 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= 1984, max= 4055, per=78.02%, avg=2694.00, stdev=1179.03, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1094KiB/s (1120kB/s)(6144KiB/5617msec); 0 zone resets clat (msec): min=109, max=1556, avg=587.76, stdev=501.70 lat (msec): min=109, max=1556, avg=587.86, stdev=501.69 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 468], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 1984, max= 2039, per=41.64%, avg=2013.00, stdev=23.74, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.04%, sys=3.44%, ctx=111, 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=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=179048: Sat Sep 5 09:43:36 2026 read: IOPS=0, BW=958KiB/s (981kB/s)(5120KiB/5343msec) clat (msec): min=101, max=467, avg=208.09, stdev=149.99 lat (msec): min=101, max=467, avg=208.09, stdev=149.99 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 109], 40.00th=[ 109], 50.00th=[ 182], 60.00th=[ 182], | 70.00th=[ 182], 80.00th=[ 182], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 2035, max= 6083, per=100.00%, avg=4059.00, stdev=2862.37, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1342KiB/s (1374kB/s)(7168KiB/5343msec); 0 zone resets clat (msec): min=172, max=1444, avg=567.68, stdev=455.22 lat (msec): min=172, max=1444, avg=567.77, stdev=455.22 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 236], | 30.00th=[ 359], 40.00th=[ 359], 50.00th=[ 372], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 911], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 1984, max= 4079, per=50.12%, avg=2422.60, stdev=926.20, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=50.00%, 500=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=5.00%, ctx=152, 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=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=3453KiB/s (3536kB/s), 345KiB/s-1655KiB/s (354kB/s-1695kB/s), io=20.0MiB (20.0MB), run=4330-5931msec WRITE: bw=4834KiB/s (4950kB/s), 1094KiB/s-1727KiB/s (1120kB/s-1768kB/s), io=28.0MiB (29.4MB), run=4330-5931msec 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=179058: Sat Sep 5 09:43:49 2026 read: IOPS=2, BW=8551KiB/s (8756kB/s)(12.0MiB/1437msec) clat (msec): min=215, max=663, avg=446.23, stdev=224.47 lat (msec): min=215, max=663, avg=446.23, stdev=224.47 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7474, max= 8143, per=100.00%, avg=7808.50, stdev=473.05, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=8.77%, ctx=47, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179059: Sat Sep 5 09:43:49 2026 read: IOPS=0, BW=1407KiB/s (1440kB/s)(4096KiB/2912msec) clat (nsec): min=605457k, max=605457k, avg=605457073.00, stdev= 0.00 lat (nsec): min=605459k, max=605459k, avg=605459363.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2813KiB/s (2881kB/s)(8192KiB/2912msec); 0 zone resets clat (msec): min=911, max=1223, avg=1067.49, stdev=221.26 lat (msec): min=911, max=1224, avg=1067.99, stdev=221.25 clat percentiles (msec): | 1.00th=[ 911], 5.00th=[ 911], 10.00th=[ 911], 20.00th=[ 911], | 30.00th=[ 911], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 1217], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 8175, max= 8175, per=77.52%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.74%, ctx=63, 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=179060: Sat Sep 5 09:43:49 2026 write: IOPS=0, BW=3955KiB/s (4050kB/s)(12.0MiB/3107msec); 0 zone resets clat (msec): min=445, max=1796, avg=1000.30, stdev=706.92 lat (msec): min=445, max=1796, avg=1000.69, stdev=706.93 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8143, max= 8159, per=77.29%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.80%, ctx=112, 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=179061: Sat Sep 5 09:43:49 2026 write: IOPS=1, BW=4521KiB/s (4629kB/s)(12.0MiB/2718msec); 0 zone resets clat (msec): min=177, max=2163, avg=870.21, stdev=1120.69 lat (msec): min=178, max=2163, avg=870.54, stdev=1120.76 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 271], | 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= 7474, max= 8143, per=74.04%, avg=7808.50, stdev=473.05, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.60%, ctx=95, 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=5626KiB/s (5761kB/s), 1407KiB/s-8551KiB/s (1440kB/s-8756kB/s), io=16.0MiB (16.8MB), run=1437-2912msec WRITE: bw=10.3MiB/s (10.8MB/s), 2813KiB/s-4521KiB/s (2881kB/s-4629kB/s), io=32.0MiB (33.6MB), run=2718-3107msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179064: Sat Sep 5 09:43:50 2026 read: IOPS=1, BW=5565KiB/s (5699kB/s)(12.0MiB/2208msec) clat (msec): min=654, max=886, avg=735.68, stdev=130.56 lat (msec): min=654, max=886, avg=735.68, stdev=130.56 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 8078, max= 8110, per=100.00%, avg=8094.00, stdev=22.63, 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=0.05%, sys=17.81%, ctx=297, 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=179065: Sat Sep 5 09:43:50 2026 read: IOPS=0, BW=1424KiB/s (1458kB/s)(4096KiB/2877msec) clat (nsec): min=482297k, max=482297k, avg=482297451.00, stdev= 0.00 lat (nsec): min=482299k, max=482299k, avg=482298731.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 481], 10.00th=[ 481], 20.00th=[ 481], | 30.00th=[ 481], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 6131, max= 6131, per=100.00%, avg=6131.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2847KiB/s (2916kB/s)(8192KiB/2877msec); 0 zone resets clat (msec): min=325, max=2066, avg=1196.00, stdev=1231.47 lat (msec): min=325, max=2067, avg=1196.76, stdev=1232.00 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 2072], | 70.00th=[ 2072], 80.00th=[ 2072], 90.00th=[ 2072], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 8126, max= 8126, per=71.35%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.41%, ctx=246, 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=179066: Sat Sep 5 09:43:50 2026 write: IOPS=1, BW=4334KiB/s (4438kB/s)(12.0MiB/2835msec); 0 zone resets clat (msec): min=456, max=1333, avg=928.72, stdev=442.74 lat (msec): min=456, max=1334, avg=930.80, stdev=443.23 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 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= 8047, max= 8192, per=71.29%, avg=8119.50, stdev=102.53, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.53%, ctx=55, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179067: Sat Sep 5 09:43:50 2026 write: IOPS=1, BW=4824KiB/s (4940kB/s)(12.0MiB/2547msec); 0 zone resets clat (msec): min=262, max=1413, avg=830.83, stdev=575.82 lat (msec): min=262, max=1413, avg=831.23, stdev=575.78 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 818], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8047, max= 8047, per=70.66%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.01%, ctx=41, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5695KiB/s (5831kB/s), 1424KiB/s-5565KiB/s (1458kB/s-5699kB/s), io=16.0MiB (16.8MB), run=2208-2877msec WRITE: bw=11.1MiB/s (11.7MB/s), 2847KiB/s-4824KiB/s (2916kB/s-4940kB/s), io=32.0MiB (33.6MB), run=2547-2877msec