== sanity test 398b: DIO and buffer IO race ============== 08:32:09 (1787401929) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.37836 s, 7.9 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=178343: Sat Aug 22 08:34:36 2026 read: IOPS=11, BW=47.0KiB/s (48.2kB/s)(5992KiB/127403msec) clat (usec): min=32, max=675184, avg=46411.46, stdev=34231.01 lat (usec): min=32, max=675185, avg=46412.56, stdev=34231.01 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 130], 10.00th=[ 16581], 20.00th=[ 23200], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 47449], | 70.00th=[ 56361], 80.00th=[ 65799], 90.00th=[ 83362], 95.00th=[100140], | 99.00th=[145753], 99.50th=[160433], 99.90th=[316670], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 7, max= 103, per=24.82%, avg=46.66, stdev=18.66, samples=250 iops : min= 1, max= 25, avg=10.99, stdev= 4.69, samples=250 write: IOPS=12, BW=49.4KiB/s (50.6kB/s)(6296KiB/127403msec); 0 zone resets clat (usec): min=1063, max=285178, avg=36489.17, stdev=38529.30 lat (usec): min=1064, max=285180, avg=36491.65, stdev=38529.10 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1352], 10.00th=[ 1663], 20.00th=[ 4047], | 30.00th=[ 7111], 40.00th=[ 16450], 50.00th=[ 25560], 60.00th=[ 35390], | 70.00th=[ 45876], 80.00th=[ 63177], 90.00th=[ 88605], 95.00th=[114820], | 99.00th=[170918], 99.50th=[183501], 99.90th=[265290], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 116, per=24.88%, avg=49.01, stdev=21.19, samples=250 iops : min= 1, max= 29, avg=11.59, stdev= 5.32, samples=250 lat (usec) : 50=0.36%, 100=1.89%, 250=0.26%, 500=0.03% lat (msec) : 2=5.76%, 4=4.56%, 10=7.62%, 20=8.89%, 50=38.51% lat (msec) : 100=25.81%, 250=6.15%, 500=0.13%, 750=0.03% cpu : usr=0.07%, sys=4.79%, ctx=6443, 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=178344: Sat Aug 22 08:34:36 2026 read: IOPS=11, BW=47.6KiB/s (48.8kB/s)(5940KiB/124684msec) clat (usec): min=38, max=654730, avg=47837.12, stdev=36012.61 lat (usec): min=38, max=654730, avg=47840.48, stdev=36012.94 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 229], 10.00th=[ 17433], 20.00th=[ 24249], | 30.00th=[ 29754], 40.00th=[ 35390], 50.00th=[ 41681], 60.00th=[ 47449], | 70.00th=[ 55313], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[102237], | 99.00th=[160433], 99.50th=[229639], 99.90th=[329253], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 7, max= 95, per=25.13%, avg=47.25, stdev=16.63, samples=245 iops : min= 1, max= 23, avg=11.14, stdev= 4.17, samples=245 write: IOPS=12, BW=50.9KiB/s (52.1kB/s)(6348KiB/124684msec); 0 zone resets clat (usec): min=920, max=223218, avg=33521.74, stdev=35280.32 lat (usec): min=921, max=223220, avg=33524.44, stdev=35281.00 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1352], 10.00th=[ 1565], 20.00th=[ 3392], | 30.00th=[ 6325], 40.00th=[ 12518], 50.00th=[ 23725], 60.00th=[ 32900], | 70.00th=[ 43254], 80.00th=[ 59507], 90.00th=[ 82314], 95.00th=[103285], | 99.00th=[152044], 99.50th=[162530], 99.90th=[221250], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 7, max= 144, per=25.54%, avg=50.32, stdev=23.34, samples=245 iops : min= 1, max= 36, avg=11.91, stdev= 5.85, samples=245 lat (usec) : 50=0.33%, 100=2.05%, 250=0.07%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=6.45%, 4=5.34%, 10=7.29%, 20=8.37%, 50=39.32% lat (msec) : 100=24.87%, 250=5.57%, 500=0.07%, 750=0.03% cpu : usr=0.07%, sys=5.09%, ctx=6491, 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=178345: Sat Aug 22 08:34:36 2026 read: IOPS=11, BW=47.5KiB/s (48.7kB/s)(6028KiB/126775msec) clat (usec): min=34, max=302450, avg=45863.78, stdev=30409.96 lat (usec): min=34, max=302452, avg=45874.51, stdev=30434.46 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 7308], 10.00th=[ 17171], 20.00th=[ 22938], | 30.00th=[ 28181], 40.00th=[ 33424], 50.00th=[ 39060], 60.00th=[ 46400], | 70.00th=[ 54789], 80.00th=[ 64750], 90.00th=[ 83362], 95.00th=[102237], | 99.00th=[152044], 99.50th=[175113], 99.90th=[208667], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 7, max= 95, per=25.20%, avg=47.38, stdev=18.82, samples=248 iops : min= 1, max= 23, avg=11.18, stdev= 4.75, samples=248 write: IOPS=12, BW=49.4KiB/s (50.6kB/s)(6260KiB/126775msec); 0 zone resets clat (usec): min=912, max=605583, avg=36550.41, stdev=41013.97 lat (usec): min=913, max=605584, avg=36553.03, stdev=41014.19 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1336], 10.00th=[ 1549], 20.00th=[ 3621], | 30.00th=[ 6718], 40.00th=[ 14746], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 48497], 80.00th=[ 64226], 90.00th=[ 87557], 95.00th=[109577], | 99.00th=[168821], 99.50th=[193987], 99.90th=[329253], 99.95th=[608175], | 99.99th=[608175] bw ( KiB/s): min= 7, max= 116, per=24.85%, avg=48.95, stdev=20.43, samples=249 iops : min= 1, max= 29, avg=11.58, stdev= 5.14, samples=249 lat (usec) : 50=0.36%, 100=1.76%, 250=0.10%, 500=0.03%, 1000=0.07% lat (msec) : 2=6.51%, 4=4.36%, 10=8.04%, 20=8.53%, 50=38.77% lat (msec) : 100=25.55%, 250=5.79%, 500=0.10%, 750=0.03% cpu : usr=0.07%, sys=4.87%, ctx=6440, 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=178346: Sat Aug 22 08:34:36 2026 read: IOPS=11, BW=47.0KiB/s (49.1kB/s)(6052KiB/126121msec) clat (usec): min=35, max=660227, avg=46514.88, stdev=35985.44 lat (usec): min=35, max=660228, avg=46521.48, stdev=35982.61 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 5735], 10.00th=[ 16188], 20.00th=[ 22676], | 30.00th=[ 27919], 40.00th=[ 32900], 50.00th=[ 39584], 60.00th=[ 45876], | 70.00th=[ 55837], 80.00th=[ 66847], 90.00th=[ 85459], 95.00th=[ 99091], | 99.00th=[158335], 99.50th=[200279], 99.90th=[362808], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 7, max= 111, per=25.39%, avg=47.74, stdev=18.51, samples=247 iops : min= 1, max= 27, avg=11.27, stdev= 4.65, samples=247 write: IOPS=12, BW=49.4KiB/s (50.6kB/s)(6236KiB/126121msec); 0 zone resets clat (usec): min=828, max=258833, avg=35414.97, stdev=36605.18 lat (usec): min=828, max=258834, avg=35426.16, stdev=36610.39 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1336], 10.00th=[ 1631], 20.00th=[ 3916], | 30.00th=[ 7242], 40.00th=[ 15401], 50.00th=[ 26346], 60.00th=[ 35390], | 70.00th=[ 45876], 80.00th=[ 61080], 90.00th=[ 85459], 95.00th=[107480], | 99.00th=[156238], 99.50th=[177210], 99.90th=[256902], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 7, max= 120, per=24.93%, avg=49.12, stdev=21.38, samples=247 iops : min= 1, max= 30, avg=11.62, stdev= 5.39, samples=247 lat (usec) : 50=0.46%, 100=1.79%, 250=0.07%, 500=0.03%, 1000=0.29% lat (msec) : 2=5.86%, 4=4.20%, 10=7.42%, 20=9.83%, 50=38.96% lat (msec) : 100=25.46%, 250=5.44%, 500=0.16%, 750=0.03% cpu : usr=0.09%, sys=4.99%, ctx=6484, 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=188KiB/s (193kB/s), 47.0KiB/s-47.0KiB/s (48.2kB/s-49.1kB/s), io=23.4MiB (24.6MB), run=124684-127403msec WRITE: bw=197KiB/s (202kB/s), 49.4KiB/s-50.9KiB/s (50.6kB/s-52.1kB/s), io=24.6MiB (25.7MB), run=124684-127403msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178348: Sat Aug 22 08:35:23 2026 read: IOPS=8, BW=34.5KiB/s (35.4kB/s)(5992KiB/173453msec) clat (msec): min=5, max=730, avg=45.71, stdev=44.22 lat (msec): min=5, max=730, avg=45.71, stdev=44.22 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 50], 80.00th=[ 67], 90.00th=[ 101], 95.00th=[ 130], | 99.00th=[ 184], 99.50th=[ 226], 99.90th=[ 435], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 143, per=25.61%, avg=35.08, stdev=23.72, samples=332 iops : min= 1, max= 35, avg= 8.11, stdev= 5.92, samples=332 write: IOPS=9, BW=36.3KiB/s (37.2kB/s)(6296KiB/173453msec); 0 zone resets clat (msec): min=13, max=374, avg=66.59, stdev=45.50 lat (msec): min=13, max=374, avg=66.60, stdev=45.50 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 63], | 70.00th=[ 79], 80.00th=[ 100], 90.00th=[ 130], 95.00th=[ 157], | 99.00th=[ 228], 99.50th=[ 247], 99.90th=[ 347], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 117, per=24.98%, avg=35.97, stdev=22.64, samples=340 iops : min= 1, max= 29, avg= 8.33, stdev= 5.68, samples=340 lat (msec) : 10=1.60%, 20=13.93%, 50=43.82%, 100=25.98%, 250=14.29% lat (msec) : 500=0.36%, 750=0.03% cpu : usr=0.05%, sys=1.93%, ctx=4975, 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=178349: Sat Aug 22 08:35:23 2026 read: IOPS=8, BW=34.4KiB/s (35.2kB/s)(5940KiB/172800msec) clat (msec): min=6, max=744, avg=45.00, stdev=42.43 lat (msec): min=6, max=744, avg=45.00, stdev=42.43 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 47], 80.00th=[ 65], 90.00th=[ 103], 95.00th=[ 131], | 99.00th=[ 190], 99.50th=[ 203], 99.90th=[ 288], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 143, per=25.39%, avg=34.79, stdev=23.75, samples=332 iops : min= 1, max= 35, avg= 8.04, stdev= 5.94, samples=332 write: IOPS=9, BW=36.7KiB/s (37.6kB/s)(6348KiB/172800msec); 0 zone resets clat (msec): min=8, max=394, avg=66.69, stdev=45.21 lat (msec): min=8, max=394, avg=66.69, stdev=45.21 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 63], | 70.00th=[ 79], 80.00th=[ 99], 90.00th=[ 128], 95.00th=[ 159], | 99.00th=[ 215], 99.50th=[ 243], 99.90th=[ 326], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 119, per=25.24%, avg=36.35, stdev=22.15, samples=340 iops : min= 1, max= 29, avg= 8.43, stdev= 5.55, samples=340 lat (msec) : 10=1.43%, 20=13.12%, 50=44.99%, 100=25.52%, 250=14.68% lat (msec) : 500=0.23%, 750=0.03% cpu : usr=0.06%, sys=1.95%, ctx=4767, 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=178350: Sat Aug 22 08:35:23 2026 read: IOPS=8, BW=34.6KiB/s (35.5kB/s)(6028KiB/174028msec) clat (msec): min=6, max=486, avg=46.20, stdev=42.13 lat (msec): min=6, max=486, avg=46.20, stdev=42.13 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 67], 90.00th=[ 104], 95.00th=[ 138], | 99.00th=[ 186], 99.50th=[ 220], 99.90th=[ 321], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 7, max= 135, per=25.39%, avg=34.79, stdev=23.68, samples=336 iops : min= 1, max= 33, avg= 8.04, stdev= 5.93, samples=336 write: IOPS=8, BW=35.0KiB/s (36.8kB/s)(6260KiB/174028msec); 0 zone resets clat (msec): min=10, max=760, avg=66.63, stdev=49.72 lat (msec): min=10, max=760, avg=66.63, stdev=49.72 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 52], 60.00th=[ 63], | 70.00th=[ 77], 80.00th=[ 100], 90.00th=[ 129], 95.00th=[ 161], | 99.00th=[ 222], 99.50th=[ 253], 99.90th=[ 384], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 133, per=24.76%, avg=35.65, stdev=23.38, samples=340 iops : min= 1, max= 33, avg= 8.25, stdev= 5.86, samples=340 lat (msec) : 10=1.33%, 20=14.03%, 50=44.01%, 100=25.36%, 250=14.88% lat (msec) : 500=0.36%, 1000=0.03% cpu : usr=0.05%, sys=1.88%, ctx=4878, 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=178351: Sat Aug 22 08:35:23 2026 read: IOPS=8, BW=35.2KiB/s (36.0kB/s)(6052KiB/172047msec) clat (msec): min=5, max=487, avg=44.89, stdev=41.62 lat (msec): min=5, max=487, avg=44.89, stdev=41.62 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 48], 80.00th=[ 64], 90.00th=[ 103], 95.00th=[ 136], | 99.00th=[ 194], 99.50th=[ 224], 99.90th=[ 259], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 7, max= 126, per=26.28%, avg=36.01, stdev=24.63, samples=327 iops : min= 1, max= 31, avg= 8.34, stdev= 6.17, samples=327 write: IOPS=9, BW=36.2KiB/s (37.1kB/s)(6236KiB/172047msec); 0 zone resets clat (msec): min=12, max=781, avg=66.68, stdev=51.79 lat (msec): min=12, max=781, avg=66.68, stdev=51.79 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 51], 60.00th=[ 61], | 70.00th=[ 77], 80.00th=[ 97], 90.00th=[ 131], 95.00th=[ 163], | 99.00th=[ 245], 99.50th=[ 288], 99.90th=[ 384], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 119, per=25.35%, avg=36.50, stdev=22.81, samples=332 iops : min= 1, max= 29, avg= 8.46, stdev= 5.71, samples=332 lat (msec) : 10=2.12%, 20=14.13%, 50=44.47%, 100=24.77%, 250=13.96% lat (msec) : 500=0.52%, 1000=0.03% cpu : usr=0.05%, sys=1.91%, ctx=4958, 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=138KiB/s (141kB/s), 34.4KiB/s-35.2KiB/s (35.2kB/s-36.0kB/s), io=23.4MiB (24.6MB), run=172047-174028msec WRITE: bw=144KiB/s (148kB/s), 35.0KiB/s-36.7KiB/s (36.8kB/s-37.6kB/s), io=24.6MiB (25.7MB), run=172047-174028msec 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=178396: Sat Aug 22 08:36:16 2026 read: IOPS=8, BW=143KiB/s (147kB/s)(5920KiB/41359msec) clat (usec): min=37, max=257297, avg=57202.63, stdev=38150.72 lat (usec): min=38, max=257298, avg=57204.55, stdev=38150.83 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 59], 10.00th=[ 78], 20.00th=[ 30016], | 30.00th=[ 39060], 40.00th=[ 44303], 50.00th=[ 53216], 60.00th=[ 61080], | 70.00th=[ 67634], 80.00th=[ 81265], 90.00th=[102237], 95.00th=[130548], | 99.00th=[164627], 99.50th=[246416], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 61, max= 409, per=24.99%, avg=142.96, stdev=61.62, samples=81 iops : min= 3, max= 25, avg= 8.16, stdev= 3.88, samples=81 write: IOPS=9, BW=154KiB/s (158kB/s)(6368KiB/41359msec); 0 zone resets clat (usec): min=1573, max=248606, avg=49760.03, stdev=48670.92 lat (usec): min=1576, max=248607, avg=49762.18, stdev=48670.89 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2606], 10.00th=[ 4621], 20.00th=[ 7439], | 30.00th=[ 11994], 40.00th=[ 21890], 50.00th=[ 36963], 60.00th=[ 47449], | 70.00th=[ 64750], 80.00th=[ 83362], 90.00th=[116917], 95.00th=[149947], | 99.00th=[212861], 99.50th=[223347], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 29, max= 349, per=25.57%, avg=153.91, stdev=65.30, samples=81 iops : min= 1, max= 21, avg= 8.85, stdev= 4.09, samples=81 lat (usec) : 50=0.65%, 100=4.30%, 500=0.13%, 750=0.13% lat (msec) : 2=1.69%, 4=2.73%, 10=9.11%, 20=7.03%, 50=27.99% lat (msec) : 100=33.07%, 250=13.02%, 500=0.13% cpu : usr=0.05%, sys=4.22%, ctx=1589, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178398: Sat Aug 22 08:36:16 2026 read: IOPS=8, BW=137KiB/s (141kB/s)(5744KiB/41824msec) clat (usec): min=34, max=271045, avg=62565.59, stdev=41316.84 lat (usec): min=34, max=271046, avg=62566.75, stdev=41316.91 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 62], 10.00th=[ 114], 20.00th=[ 31589], | 30.00th=[ 42206], 40.00th=[ 51119], 50.00th=[ 58983], 60.00th=[ 68682], | 70.00th=[ 77071], 80.00th=[ 89654], 90.00th=[109577], 95.00th=[133694], | 99.00th=[202376], 99.50th=[258999], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 29, max= 286, per=23.75%, avg=135.83, stdev=58.54, samples=82 iops : min= 1, max= 17, avg= 7.71, stdev= 3.67, samples=82 write: IOPS=9, BW=156KiB/s (160kB/s)(6544KiB/41824msec); 0 zone resets clat (usec): min=1640, max=237050, avg=46471.93, stdev=46787.12 lat (usec): min=1642, max=237052, avg=46482.90, stdev=46779.13 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2008], 10.00th=[ 3752], 20.00th=[ 7570], | 30.00th=[ 13173], 40.00th=[ 21103], 50.00th=[ 32375], 60.00th=[ 43779], | 70.00th=[ 53216], 80.00th=[ 77071], 90.00th=[123208], 95.00th=[147850], | 99.00th=[196084], 99.50th=[202376], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 31, max= 510, per=25.71%, avg=154.77, stdev=84.95, samples=82 iops : min= 1, max= 31, avg= 8.90, stdev= 5.37, samples=82 lat (usec) : 50=0.39%, 100=4.04%, 250=0.39%, 750=0.13% lat (msec) : 2=2.60%, 4=3.12%, 10=8.20%, 20=7.55%, 50=26.95% lat (msec) : 100=32.68%, 250=13.67%, 500=0.26% cpu : usr=0.06%, sys=4.66%, ctx=1655, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178400: Sat Aug 22 08:36:16 2026 read: IOPS=9, BW=153KiB/s (156kB/s)(6256KiB/41021msec) clat (usec): min=41, max=301099, avg=60052.73, stdev=41159.79 lat (usec): min=42, max=301101, avg=60054.87, stdev=41159.49 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 2212], 20.00th=[ 30016], | 30.00th=[ 40109], 40.00th=[ 47973], 50.00th=[ 54789], 60.00th=[ 63701], | 70.00th=[ 73925], 80.00th=[ 86508], 90.00th=[106431], 95.00th=[122160], | 99.00th=[212861], 99.50th=[265290], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 31, max= 348, per=26.57%, avg=151.98, stdev=66.25, samples=80 iops : min= 1, max= 21, avg= 8.72, stdev= 4.21, samples=80 write: IOPS=9, BW=147KiB/s (151kB/s)(6032KiB/41021msec); 0 zone resets clat (usec): min=1699, max=213851, avg=46261.75, stdev=45977.42 lat (usec): min=1700, max=213853, avg=46263.80, stdev=45977.47 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 1909], 10.00th=[ 2868], 20.00th=[ 6783], | 30.00th=[ 11076], 40.00th=[ 20841], 50.00th=[ 33424], 60.00th=[ 45351], | 70.00th=[ 60031], 80.00th=[ 77071], 90.00th=[110625], 95.00th=[143655], | 99.00th=[198181], 99.50th=[208667], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 31, max= 285, per=23.98%, avg=144.35, stdev=62.65, samples=80 iops : min= 1, max= 17, avg= 8.25, stdev= 3.91, samples=80 lat (usec) : 50=0.13%, 100=4.56%, 250=0.39% lat (msec) : 2=3.65%, 4=3.39%, 10=6.77%, 20=6.77%, 50=26.95% lat (msec) : 100=34.24%, 250=12.89%, 500=0.26% cpu : usr=0.06%, sys=4.36%, ctx=1633, 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=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=178401: Sat Aug 22 08:36:16 2026 read: IOPS=9, BW=145KiB/s (149kB/s)(6032KiB/41529msec) clat (usec): min=42, max=330982, avg=60472.66, stdev=45765.26 lat (usec): min=43, max=330983, avg=60473.88, stdev=45765.26 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 71], 20.00th=[ 26870], | 30.00th=[ 34341], 40.00th=[ 45351], 50.00th=[ 57410], 60.00th=[ 67634], | 70.00th=[ 77071], 80.00th=[ 91751], 90.00th=[113771], 95.00th=[143655], | 99.00th=[221250], 99.50th=[316670], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 30, max= 279, per=25.31%, avg=144.78, stdev=57.57, samples=79 iops : min= 1, max= 17, avg= 8.27, stdev= 3.64, samples=79 write: IOPS=9, BW=151KiB/s (154kB/s)(6256KiB/41529msec); 0 zone resets clat (usec): min=1536, max=236502, avg=47005.66, stdev=47909.30 lat (usec): min=1539, max=236504, avg=47007.73, stdev=47909.29 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1909], 10.00th=[ 2802], 20.00th=[ 7111], | 30.00th=[ 10945], 40.00th=[ 17433], 50.00th=[ 33424], 60.00th=[ 46400], | 70.00th=[ 58459], 80.00th=[ 83362], 90.00th=[117965], 95.00th=[141558], | 99.00th=[208667], 99.50th=[227541], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 31, max= 404, per=24.89%, avg=149.85, stdev=69.63, samples=80 iops : min= 1, max= 25, avg= 8.60, stdev= 4.41, samples=80 lat (usec) : 50=0.52%, 100=5.60%, 250=0.52%, 750=0.26% lat (msec) : 2=3.65%, 4=2.21%, 10=7.81%, 20=8.59%, 50=24.74% lat (msec) : 100=32.03%, 250=13.80%, 500=0.26% cpu : usr=0.06%, sys=4.32%, ctx=1631, 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=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=573KiB/s (586kB/s), 137KiB/s-153KiB/s (141kB/s-156kB/s), io=23.4MiB (24.5MB), run=41021-41824msec WRITE: bw=603KiB/s (617kB/s), 147KiB/s-156KiB/s (151kB/s-160kB/s), io=24.6MiB (25.8MB), run=41021-41824msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178397: Sat Aug 22 08:36:29 2026 read: IOPS=6, BW=108KiB/s (111kB/s)(5920KiB/54705msec) clat (msec): min=6, max=351, avg=60.63, stdev=57.67 lat (msec): min=6, max=351, avg=60.63, stdev=57.67 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 50], | 70.00th=[ 66], 80.00th=[ 86], 90.00th=[ 136], 95.00th=[ 192], | 99.00th=[ 284], 99.50th=[ 330], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 381, per=25.13%, avg=109.55, stdev=84.10, samples=104 iops : min= 1, max= 23, avg= 6.04, stdev= 5.30, samples=104 write: IOPS=7, BW=116KiB/s (119kB/s)(6368KiB/54705msec); 0 zone resets clat (msec): min=15, max=448, avg=80.36, stdev=60.71 lat (msec): min=15, max=448, avg=80.37, stdev=60.71 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 59], 60.00th=[ 74], | 70.00th=[ 100], 80.00th=[ 124], 90.00th=[ 161], 95.00th=[ 201], | 99.00th=[ 292], 99.50th=[ 351], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 29, max= 352, per=25.65%, avg=117.73, stdev=84.34, samples=105 iops : min= 1, max= 22, avg= 6.54, stdev= 5.33, samples=105 lat (msec) : 10=1.69%, 20=7.68%, 50=43.10%, 100=23.57%, 250=22.14% lat (msec) : 500=1.82% cpu : usr=0.05%, sys=1.64%, ctx=1291, 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=178399: Sat Aug 22 08:36:29 2026 read: IOPS=6, BW=105KiB/s (108kB/s)(5744KiB/54461msec) clat (msec): min=8, max=302, avg=57.37, stdev=51.62 lat (msec): min=8, max=302, avg=57.38, stdev=51.62 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 39], 60.00th=[ 48], | 70.00th=[ 62], 80.00th=[ 86], 90.00th=[ 131], 95.00th=[ 169], | 99.00th=[ 251], 99.50th=[ 275], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 30, max= 380, per=25.71%, avg=112.10, stdev=80.62, samples=100 iops : min= 1, max= 23, avg= 6.20, stdev= 5.07, samples=100 write: IOPS=7, BW=120KiB/s (123kB/s)(6544KiB/54461msec); 0 zone resets clat (msec): min=15, max=359, avg=82.48, stdev=60.99 lat (msec): min=15, max=359, avg=82.48, stdev=60.99 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 51], 50.00th=[ 60], 60.00th=[ 75], | 70.00th=[ 97], 80.00th=[ 128], 90.00th=[ 182], 95.00th=[ 209], | 99.00th=[ 266], 99.50th=[ 275], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 29, max= 414, per=26.61%, avg=122.15, stdev=85.62, samples=105 iops : min= 1, max= 25, avg= 6.83, stdev= 5.40, samples=105 lat (msec) : 10=0.13%, 20=8.85%, 50=41.28%, 100=27.47%, 250=20.83% lat (msec) : 500=1.43% cpu : usr=0.04%, sys=1.55%, ctx=1179, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178402: Sat Aug 22 08:36:29 2026 read: IOPS=7, BW=114KiB/s (117kB/s)(6256KiB/54757msec) clat (msec): min=8, max=294, avg=59.31, stdev=57.61 lat (msec): min=8, max=294, avg=59.31, stdev=57.61 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 44], | 70.00th=[ 59], 80.00th=[ 93], 90.00th=[ 146], 95.00th=[ 188], | 99.00th=[ 271], 99.50th=[ 275], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 30, max= 447, per=27.83%, avg=121.36, stdev=95.35, samples=100 iops : min= 1, max= 27, avg= 6.78, stdev= 6.00, samples=100 write: IOPS=6, BW=110KiB/s (113kB/s)(6032KiB/54757msec); 0 zone resets clat (msec): min=15, max=448, avg=82.75, stdev=61.80 lat (msec): min=15, max=448, avg=82.75, stdev=61.80 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 27], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 51], 50.00th=[ 59], 60.00th=[ 73], | 70.00th=[ 94], 80.00th=[ 128], 90.00th=[ 178], 95.00th=[ 211], | 99.00th=[ 268], 99.50th=[ 326], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 29, max= 351, per=24.16%, avg=110.90, stdev=77.64, samples=104 iops : min= 1, max= 21, avg= 6.12, stdev= 4.89, samples=104 lat (msec) : 10=0.52%, 20=10.68%, 50=40.49%, 100=24.61%, 250=22.14% lat (msec) : 500=1.56% cpu : usr=0.04%, sys=1.52%, ctx=1174, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178403: Sat Aug 22 08:36:29 2026 read: IOPS=6, BW=110KiB/s (113kB/s)(6032KiB/54893msec) clat (msec): min=8, max=350, avg=62.66, stdev=60.05 lat (msec): min=8, max=350, avg=62.66, stdev=60.05 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 32], 50.00th=[ 40], 60.00th=[ 51], | 70.00th=[ 69], 80.00th=[ 95], 90.00th=[ 148], 95.00th=[ 205], | 99.00th=[ 259], 99.50th=[ 338], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 352, per=26.69%, avg=116.36, stdev=80.44, samples=101 iops : min= 1, max= 22, avg= 6.47, stdev= 5.08, samples=101 write: IOPS=7, BW=114KiB/s (117kB/s)(6256KiB/54893msec); 0 zone resets clat (msec): min=14, max=358, avg=78.98, stdev=55.22 lat (msec): min=14, max=358, avg=78.98, stdev=55.21 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 61], 60.00th=[ 75], | 70.00th=[ 100], 80.00th=[ 118], 90.00th=[ 155], 95.00th=[ 197], | 99.00th=[ 255], 99.50th=[ 288], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 411, per=25.49%, avg=117.01, stdev=84.96, samples=105 iops : min= 1, max= 25, avg= 6.51, stdev= 5.38, samples=105 lat (msec) : 10=0.91%, 20=8.98%, 50=41.41%, 100=24.22%, 250=23.18% lat (msec) : 500=1.30% cpu : usr=0.03%, sys=1.39%, ctx=1174, 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=436KiB/s (447kB/s), 105KiB/s-114KiB/s (108kB/s-117kB/s), io=23.4MiB (24.5MB), run=54461-54893msec WRITE: bw=459KiB/s (470kB/s), 110KiB/s-120KiB/s (113kB/s-123kB/s), io=24.6MiB (25.8MB), run=54461-54893msec 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=178416: Sat Aug 22 08:36:44 2026 read: IOPS=1, BW=1880KiB/s (1925kB/s)(7168KiB/3813msec) clat (msec): min=103, max=596, avg=222.45, stdev=184.64 lat (msec): min=103, max=596, avg=222.45, stdev=184.64 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 110], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 146], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 342], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 2015, max= 4185, per=75.80%, avg=3426.33, stdev=1223.40, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1343KiB/s (1375kB/s)(5120KiB/3813msec); 0 zone resets clat (msec): min=172, max=909, avg=423.97, stdev=305.07 lat (msec): min=173, max=909, avg=424.16, stdev=305.25 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 518], 80.00th=[ 518], 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= 1395, max= 3923, per=37.00%, avg=2342.00, stdev=1095.07, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=58.33%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=4.09%, ctx=86, 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=178417: Sat Aug 22 08:36:44 2026 read: IOPS=0, BW=452KiB/s (463kB/s)(2048KiB/4530msec) clat (msec): min=112, max=264, avg=188.28, stdev=107.57 lat (msec): min=112, max=264, avg=188.28, stdev=107.57 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 113], 60.00th=[ 266], | 70.00th=[ 266], 80.00th=[ 266], 90.00th=[ 266], 95.00th=[ 266], | 99.00th=[ 266], 99.50th=[ 266], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 1385, max= 1961, per=37.01%, avg=1673.00, stdev=407.29, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2260KiB/s (2315kB/s)(10.0MiB/4530msec); 0 zone resets clat (msec): min=169, max=784, avg=410.76, stdev=203.65 lat (msec): min=169, max=784, avg=410.86, stdev=203.65 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 186], | 30.00th=[ 247], 40.00th=[ 284], 50.00th=[ 330], 60.00th=[ 456], | 70.00th=[ 485], 80.00th=[ 527], 90.00th=[ 642], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1928, max= 2771, per=33.53%, avg=2122.00, stdev=288.87, samples=7 iops : min= 1, max= 2, avg= 1.14, stdev= 0.38, samples=7 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.04%, sys=7.51%, ctx=103, 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=178418: Sat Aug 22 08:36:44 2026 read: IOPS=1, BW=1435KiB/s (1470kB/s)(6144KiB/4281msec) clat (msec): min=138, max=861, avg=395.49, stdev=263.50 lat (msec): min=138, max=861, avg=395.49, stdev=263.50 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 266], 50.00th=[ 266], 60.00th=[ 435], | 70.00th=[ 477], 80.00th=[ 477], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1928, max= 3923, per=54.89%, avg=2481.25, stdev=962.54, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1435KiB/s (1470kB/s)(6144KiB/4281msec); 0 zone resets clat (msec): min=118, max=592, avg=284.16, stdev=190.39 lat (msec): min=118, max=593, avg=284.32, stdev=190.32 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 239], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 2015, max= 4284, per=43.85%, avg=2775.33, stdev=1306.56, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=4.60%, ctx=78, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178419: Sat Aug 22 08:36:44 2026 read: IOPS=1, BW=1137KiB/s (1164kB/s)(5120KiB/4503msec) clat (msec): min=37, max=1293, avg=438.06, stdev=506.20 lat (msec): min=37, max=1293, avg=438.06, stdev=506.20 clat percentiles (msec): | 1.00th=[ 38], 5.00th=[ 38], 10.00th=[ 38], 20.00th=[ 38], | 30.00th=[ 82], 40.00th=[ 82], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 1961, max= 2039, per=44.59%, avg=2015.50, stdev=36.67, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1592KiB/s (1630kB/s)(7168KiB/4503msec); 0 zone resets clat (msec): min=131, max=845, avg=315.70, stdev=248.48 lat (msec): min=131, max=845, avg=315.79, stdev=248.47 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 165], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 207], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 351], 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= 1928, max= 2836, per=34.93%, avg=2210.50, stdev=420.27, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=33.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=3.38%, ctx=63, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4521KiB/s (4629kB/s), 452KiB/s-1880KiB/s (463kB/s-1925kB/s), io=20.0MiB (20.0MB), run=3813-4530msec WRITE: bw=6329KiB/s (6481kB/s), 1343KiB/s-2260KiB/s (1375kB/s-2315kB/s), io=28.0MiB (29.4MB), run=3813-4530msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178421: Sat Aug 22 08:36:44 2026 read: IOPS=1, BW=1895KiB/s (1940kB/s)(7168KiB/3783msec) clat (usec): min=439, max=828266, avg=281787.24, stdev=352924.35 lat (usec): min=440, max=828267, avg=281788.73, stdev=352924.26 clat percentiles (usec): | 1.00th=[ 441], 5.00th=[ 441], 10.00th=[ 441], 20.00th=[ 873], | 30.00th=[ 30016], 40.00th=[ 30016], 50.00th=[170918], 60.00th=[202376], | 70.00th=[202376], 80.00th=[742392], 90.00th=[826278], 95.00th=[826278], | 99.00th=[826278], 99.50th=[826278], 99.90th=[826278], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 1497, max= 4079, per=50.38%, avg=2316.00, stdev=1009.72, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1353KiB/s (1386kB/s)(5120KiB/3783msec); 0 zone resets clat (msec): min=179, max=566, avg=322.20, stdev=160.12 lat (msec): min=179, max=566, avg=322.27, stdev=160.14 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 222], 40.00th=[ 222], 50.00th=[ 243], 60.00th=[ 243], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 2035, max= 4039, per=42.03%, avg=2704.33, stdev=1155.86, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33%, 1000=8.33% lat (msec) : 50=8.33%, 250=41.67%, 500=8.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=12.61%, ctx=168, 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=178422: Sat Aug 22 08:36:44 2026 read: IOPS=0, BW=460KiB/s (471kB/s)(2048KiB/4455msec) clat (usec): min=476, max=244821, avg=122649.08, stdev=172778.39 lat (usec): min=477, max=244824, avg=122651.01, stdev=172779.45 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 478], | 30.00th=[ 478], 40.00th=[ 478], 50.00th=[ 478], 60.00th=[244319], | 70.00th=[244319], 80.00th=[244319], 90.00th=[244319], 95.00th=[244319], | 99.00th=[244319], 99.50th=[244319], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 1398, max= 2000, per=36.96%, avg=1699.00, stdev=425.68, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2299KiB/s (2354kB/s)(10.0MiB/4455msec); 0 zone resets clat (msec): min=174, max=1030, avg=412.89, stdev=254.17 lat (msec): min=174, max=1030, avg=412.97, stdev=254.15 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 209], 40.00th=[ 317], 50.00th=[ 321], 60.00th=[ 405], | 70.00th=[ 460], 80.00th=[ 485], 90.00th=[ 558], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 1965, max= 4096, per=46.76%, avg=3008.83, stdev=1099.58, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.33, samples=6 lat (usec) : 500=8.33% lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=16.30%, ctx=206, 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=178423: Sat Aug 22 08:36:44 2026 read: IOPS=1, BW=1466KiB/s (1501kB/s)(6144KiB/4191msec) clat (usec): min=442, max=334309, avg=129062.60, stdev=159812.71 lat (usec): min=443, max=334311, avg=129077.17, stdev=159801.70 clat percentiles (usec): | 1.00th=[ 445], 5.00th=[ 445], 10.00th=[ 445], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[ 17433], 50.00th=[ 17433], 60.00th=[ 94897], | 70.00th=[325059], 80.00th=[325059], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 2000, max= 2039, per=43.93%, avg=2019.50, stdev=27.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1466KiB/s (1501kB/s)(6144KiB/4191msec); 0 zone resets clat (msec): min=93, max=1513, avg=513.88, stdev=548.61 lat (msec): min=93, max=1513, avg=513.95, stdev=548.62 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 197], | 30.00th=[ 197], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 255], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 1456, max= 1969, per=27.92%, avg=1796.67, stdev=295.03, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 20=8.33%, 100=16.67%, 250=16.67%, 500=25.00%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.02%, sys=12.70%, ctx=155, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178424: Sat Aug 22 08:36:44 2026 read: IOPS=1, BW=1435KiB/s (1469kB/s)(5120KiB/3568msec) clat (usec): min=543, max=308393, avg=199946.87, stdev=124931.14 lat (usec): min=545, max=308395, avg=199948.24, stdev=124930.81 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 545], | 30.00th=[168821], 40.00th=[168821], 50.00th=[227541], 60.00th=[227541], | 70.00th=[295699], 80.00th=[295699], 90.00th=[308282], 95.00th=[308282], | 99.00th=[308282], 99.50th=[308282], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 2000, max= 6119, per=88.31%, avg=4059.50, stdev=2912.57, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=2009KiB/s (2057kB/s)(7168KiB/3568msec); 0 zone resets clat (msec): min=113, max=806, avg=320.73, stdev=236.85 lat (msec): min=113, max=806, avg=320.82, stdev=236.84 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 192], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 209], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 430], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1969, max= 4039, per=42.61%, avg=2741.75, stdev=979.35, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=33.33%, 1000=8.33% cpu : usr=0.00%, sys=16.99%, ctx=215, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4597KiB/s (4707kB/s), 460KiB/s-1895KiB/s (471kB/s-1940kB/s), io=20.0MiB (20.0MB), run=3568-4455msec WRITE: bw=6436KiB/s (6590kB/s), 1353KiB/s-2299KiB/s (1386kB/s-2354kB/s), io=28.0MiB (29.4MB), run=3568-4455msec 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=178432: Sat Aug 22 08:36:58 2026 read: IOPS=0, BW=3341KiB/s (3421kB/s)(12.0MiB/3678msec) clat (msec): min=1022, max=1153, avg=1107.14, stdev=73.70 lat (msec): min=1022, max=1153, avg=1107.14, stdev=73.70 clat percentiles (msec): | 1.00th=[ 1020], 5.00th=[ 1020], 10.00th=[ 1020], 20.00th=[ 1020], | 30.00th=[ 1020], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 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= 8110, max= 8192, per=100.00%, avg=8151.00, stdev=57.98, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=3.48%, ctx=69, 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=178433: Sat Aug 22 08:36:58 2026 read: IOPS=0, BW=1860KiB/s (1905kB/s)(4096KiB/2202msec) clat (nsec): min=631350k, max=631350k, avg=631349510.00, stdev= 0.00 lat (nsec): min=631353k, max=631353k, avg=631353152.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3720KiB/s (3810kB/s)(8192KiB/2202msec); 0 zone resets clat (msec): min=360, max=895, avg=628.00, stdev=377.65 lat (msec): min=363, max=895, avg=629.55, stdev=376.55 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 894], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.05%, sys=5.68%, ctx=57, 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=178434: Sat Aug 22 08:36:58 2026 write: IOPS=0, BW=3047KiB/s (3120kB/s)(12.0MiB/4033msec); 0 zone resets clat (msec): min=322, max=2134, avg=1237.66, stdev=906.36 lat (msec): min=322, max=2135, avg=1238.01, stdev=906.41 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 2140], 80.00th=[ 2140], 90.00th=[ 2140], 95.00th=[ 2140], | 99.00th=[ 2140], 99.50th=[ 2140], 99.90th=[ 2140], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 8110, max= 8110, per=99.83%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.93%, ctx=58, 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=178435: Sat Aug 22 08:36:58 2026 write: IOPS=0, BW=4095KiB/s (4193kB/s)(12.0MiB/3001msec); 0 zone resets clat (msec): min=357, max=1935, avg=905.97, stdev=892.11 lat (msec): min=357, max=1939, avg=907.75, stdev=894.44 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 1938], 80.00th=[ 1938], 90.00th=[ 1938], 95.00th=[ 1938], | 99.00th=[ 1938], 99.50th=[ 1938], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min=16000, max=16000, per=100.00%, avg=16000.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=2.87%, ctx=44, 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=4455KiB/s (4562kB/s), 1860KiB/s-3341KiB/s (1905kB/s-3421kB/s), io=16.0MiB (16.8MB), run=2202-3678msec WRITE: bw=8125KiB/s (8320kB/s), 3047KiB/s-4095KiB/s (3120kB/s-4193kB/s), io=32.0MiB (33.6MB), run=2202-4033msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178436: Sat Aug 22 08:36:58 2026 read: IOPS=1, BW=4129KiB/s (4228kB/s)(12.0MiB/2976msec) clat (msec): min=790, max=1039, avg=947.34, stdev=136.60 lat (msec): min=790, max=1039, avg=947.35, stdev=136.60 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 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= 7699, max= 8126, per=100.00%, avg=7912.50, stdev=301.93, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=10.15%, ctx=324, 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=178437: Sat Aug 22 08:36:58 2026 read: IOPS=0, BW=1342KiB/s (1374kB/s)(4096KiB/3052msec) clat (nsec): min=1040.7M, max=1040.7M, avg=1040685093.00, stdev= 0.00 lat (nsec): min=1040.7M, max=1040.7M, avg=1040687532.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1045], 5.00th=[ 1045], 10.00th=[ 1045], 20.00th=[ 1045], | 30.00th=[ 1045], 40.00th=[ 1045], 50.00th=[ 1045], 60.00th=[ 1045], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2684KiB/s (2749kB/s)(8192KiB/3052msec); 0 zone resets clat (msec): min=803, max=1150, avg=977.00, stdev=245.94 lat (msec): min=803, max=1151, avg=977.46, stdev=246.36 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 1150], | 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= 7801, max= 7801, per=92.57%, avg=7801.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.07%, sys=5.34%, ctx=127, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178438: Sat Aug 22 08:36:58 2026 write: IOPS=0, BW=3160KiB/s (3236kB/s)(12.0MiB/3888msec); 0 zone resets clat (msec): min=223, max=2150, avg=1239.82, stdev=967.83 lat (msec): min=224, max=2151, avg=1240.27, stdev=967.85 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 1351], 50.00th=[ 1351], 60.00th=[ 1351], | 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= 7876, max= 7876, per=93.46%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.47%, ctx=32, 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=178439: Sat Aug 22 08:36:58 2026 write: IOPS=1, BW=4262KiB/s (4365kB/s)(12.0MiB/2883msec); 0 zone resets clat (msec): min=324, max=2176, avg=948.55, stdev=1063.66 lat (msec): min=325, max=2177, avg=949.27, stdev=1063.37 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 347], | 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= 6532, max= 8126, per=86.97%, avg=7329.00, stdev=1127.13, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.23%, ctx=54, 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=5368KiB/s (5497kB/s), 1342KiB/s-4129KiB/s (1374kB/s-4228kB/s), io=16.0MiB (16.8MB), run=2976-3052msec WRITE: bw=8428KiB/s (8630kB/s), 2684KiB/s-4262KiB/s (2749kB/s-4365kB/s), io=32.0MiB (33.6MB), run=2883-3888msec