== sanity test 398b: DIO and buffer IO race ============== 20:01:51 (1787788911) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.18006 s, 7.0 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=178710: Wed Aug 26 20:04:14 2026 read: IOPS=12, BW=50.2KiB/s (51.4kB/s)(5992KiB/119281msec) clat (usec): min=38, max=698045, avg=44778.58, stdev=33921.05 lat (usec): min=39, max=698048, avg=44780.21, stdev=33921.32 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 10814], 10.00th=[ 16188], 20.00th=[ 22152], | 30.00th=[ 26870], 40.00th=[ 32113], 50.00th=[ 38011], 60.00th=[ 44827], | 70.00th=[ 52691], 80.00th=[ 63177], 90.00th=[ 81265], 95.00th=[ 98042], | 99.00th=[158335], 99.50th=[183501], 99.90th=[252707], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 7, max= 119, per=24.97%, avg=49.95, stdev=19.51, samples=234 iops : min= 1, max= 29, avg=11.83, stdev= 4.91, samples=234 write: IOPS=13, BW=52.8KiB/s (54.0kB/s)(6296KiB/119281msec); 0 zone resets clat (usec): min=876, max=257598, avg=33074.49, stdev=35321.60 lat (usec): min=877, max=257600, avg=33076.28, stdev=35321.74 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1319], 20.00th=[ 2868], | 30.00th=[ 6194], 40.00th=[ 13960], 50.00th=[ 22938], 60.00th=[ 31851], | 70.00th=[ 42730], 80.00th=[ 56886], 90.00th=[ 81265], 95.00th=[106431], | 99.00th=[147850], 99.50th=[160433], 99.90th=[250610], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 7, max= 127, per=24.99%, avg=52.48, stdev=22.88, samples=234 iops : min= 1, max= 31, avg=12.46, stdev= 5.77, samples=234 lat (usec) : 50=0.10%, 100=1.66%, 250=0.20%, 750=0.03%, 1000=0.26% lat (msec) : 2=8.04%, 4=4.17%, 10=6.18%, 20=10.61%, 50=39.39% lat (msec) : 100=24.38%, 250=4.88%, 500=0.07%, 750=0.03% cpu : usr=0.06%, sys=5.03%, ctx=6268, 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=178711: Wed Aug 26 20:04:14 2026 read: IOPS=12, BW=51.5KiB/s (52.7kB/s)(5940KiB/115405msec) clat (usec): min=38, max=635897, avg=44171.41, stdev=33684.69 lat (usec): min=38, max=635898, avg=44173.82, stdev=33684.80 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 10028], 10.00th=[ 15664], 20.00th=[ 21890], | 30.00th=[ 26608], 40.00th=[ 31589], 50.00th=[ 36963], 60.00th=[ 42730], | 70.00th=[ 51119], 80.00th=[ 61604], 90.00th=[ 83362], 95.00th=[100140], | 99.00th=[160433], 99.50th=[181404], 99.90th=[231736], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 7, max= 109, per=25.69%, avg=51.38, stdev=20.32, samples=226 iops : min= 1, max= 27, avg=12.19, stdev= 5.12, samples=226 write: IOPS=13, BW=55.0KiB/s (56.3kB/s)(6348KiB/115405msec); 0 zone resets clat (usec): min=836, max=189349, avg=31279.78, stdev=33518.31 lat (usec): min=836, max=189351, avg=31283.86, stdev=33520.82 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1319], 20.00th=[ 2933], | 30.00th=[ 5735], 40.00th=[ 12387], 50.00th=[ 21627], 60.00th=[ 29754], | 70.00th=[ 40109], 80.00th=[ 54789], 90.00th=[ 77071], 95.00th=[ 98042], | 99.00th=[145753], 99.50th=[156238], 99.90th=[179307], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 7, max= 119, per=26.07%, avg=54.74, stdev=23.38, samples=227 iops : min= 1, max= 29, avg=13.04, stdev= 5.89, samples=227 lat (usec) : 50=0.29%, 100=1.30%, 250=0.03%, 500=0.03%, 1000=0.29% lat (msec) : 2=7.71%, 4=4.98%, 10=7.13%, 20=11.30%, 50=39.62% lat (msec) : 100=22.36%, 250=4.92%, 750=0.03% cpu : usr=0.07%, sys=5.13%, ctx=6204, 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=178712: Wed Aug 26 20:04:14 2026 read: IOPS=13, BW=52.0KiB/s (53.3kB/s)(6028KiB/115875msec) clat (usec): min=32, max=200090, avg=41823.29, stdev=27102.81 lat (usec): min=33, max=200091, avg=41826.09, stdev=27102.20 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 8586], 10.00th=[ 15270], 20.00th=[ 21890], | 30.00th=[ 26084], 40.00th=[ 30278], 50.00th=[ 36439], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 59507], 90.00th=[ 74974], 95.00th=[ 94897], | 99.00th=[135267], 99.50th=[164627], 99.90th=[189793], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 15, max= 103, per=25.88%, avg=51.75, stdev=19.54, samples=228 iops : min= 3, max= 25, avg=12.29, stdev= 4.92, samples=228 write: IOPS=13, BW=54.0KiB/s (55.3kB/s)(6260KiB/115875msec); 0 zone resets clat (usec): min=763, max=642931, avg=33663.11, stdev=38219.75 lat (usec): min=764, max=642932, avg=33668.39, stdev=38218.10 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1188], 10.00th=[ 1336], 20.00th=[ 2900], | 30.00th=[ 6259], 40.00th=[ 14091], 50.00th=[ 24249], 60.00th=[ 32900], | 70.00th=[ 43779], 80.00th=[ 57934], 90.00th=[ 81265], 95.00th=[100140], | 99.00th=[158335], 99.50th=[179307], 99.90th=[238027], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 7, max= 142, per=25.58%, avg=53.72, stdev=23.88, samples=228 iops : min= 1, max= 35, avg=12.78, stdev= 6.01, samples=228 lat (usec) : 50=0.20%, 100=1.92%, 250=0.03%, 750=0.03%, 1000=0.10% lat (msec) : 2=7.81%, 4=4.20%, 10=6.80%, 20=10.29%, 50=41.34% lat (msec) : 100=22.66%, 250=4.59%, 750=0.03% cpu : usr=0.07%, sys=4.87%, ctx=6156, 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=178713: Wed Aug 26 20:04:14 2026 read: IOPS=12, BW=50.6KiB/s (51.8kB/s)(6052KiB/119527msec) clat (usec): min=35, max=338698, avg=44865.83, stdev=30392.93 lat (usec): min=35, max=338699, avg=44868.50, stdev=30394.98 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10421], 10.00th=[ 16450], 20.00th=[ 22152], | 30.00th=[ 27395], 40.00th=[ 32375], 50.00th=[ 38536], 60.00th=[ 45876], | 70.00th=[ 53740], 80.00th=[ 63701], 90.00th=[ 80217], 95.00th=[101188], | 99.00th=[145753], 99.50th=[175113], 99.90th=[291505], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 7, max= 104, per=25.18%, avg=50.36, stdev=18.91, samples=235 iops : min= 1, max= 26, avg=11.93, stdev= 4.77, samples=235 write: IOPS=13, BW=52.2KiB/s (53.4kB/s)(6236KiB/119527msec); 0 zone resets clat (usec): min=705, max=662550, avg=33013.70, stdev=36730.54 lat (usec): min=705, max=662552, avg=33017.66, stdev=36733.18 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1369], 20.00th=[ 3195], | 30.00th=[ 6849], 40.00th=[ 15664], 50.00th=[ 24511], 60.00th=[ 32375], | 70.00th=[ 42730], 80.00th=[ 58459], 90.00th=[ 78119], 95.00th=[ 98042], | 99.00th=[147850], 99.50th=[156238], 99.90th=[274727], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 7, max= 120, per=24.80%, avg=52.08, stdev=21.53, samples=234 iops : min= 1, max= 30, avg=12.36, stdev= 5.41, samples=234 lat (usec) : 50=0.26%, 100=1.69%, 250=0.10%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.26% lat (msec) : 2=6.90%, 4=4.36%, 10=6.22%, 20=10.55%, 50=40.04% lat (msec) : 100=24.77%, 250=4.62%, 500=0.10%, 750=0.03% cpu : usr=0.07%, sys=5.02%, ctx=6342, 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=201KiB/s (206kB/s), 50.2KiB/s-52.0KiB/s (51.4kB/s-53.3kB/s), io=23.4MiB (24.6MB), run=115405-119527msec WRITE: bw=210KiB/s (215kB/s), 52.2KiB/s-55.0KiB/s (53.4kB/s-56.3kB/s), io=24.6MiB (25.7MB), run=115405-119527msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178705: Wed Aug 26 20:04:52 2026 read: IOPS=9, BW=37.9KiB/s (38.8kB/s)(5992KiB/158004msec) clat (msec): min=5, max=1007, avg=41.62, stdev=44.48 lat (msec): min=5, max=1007, avg=41.63, stdev=44.48 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 61], 90.00th=[ 91], 95.00th=[ 124], | 99.00th=[ 180], 99.50th=[ 201], 99.90th=[ 279], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 151, per=25.29%, avg=38.19, stdev=25.59, samples=305 iops : min= 1, max= 37, avg= 8.87, stdev= 6.43, samples=305 write: IOPS=9, BW=39.8KiB/s (40.8kB/s)(6296KiB/158004msec); 0 zone resets clat (msec): min=12, max=405, avg=60.52, stdev=41.43 lat (msec): min=12, max=405, avg=60.53, stdev=41.44 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 87], 90.00th=[ 117], 95.00th=[ 144], | 99.00th=[ 203], 99.50th=[ 247], 99.90th=[ 338], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 7, max= 110, per=25.06%, avg=39.59, stdev=23.51, samples=309 iops : min= 1, max= 27, avg= 9.23, stdev= 5.90, samples=309 lat (msec) : 10=2.73%, 20=14.88%, 50=46.68%, 100=24.38%, 250=11.00% lat (msec) : 500=0.29%, 2000=0.03% cpu : usr=0.05%, sys=1.78%, ctx=4706, 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=178706: Wed Aug 26 20:04:52 2026 read: IOPS=9, BW=37.4KiB/s (38.3kB/s)(5940KiB/158694msec) clat (msec): min=5, max=945, avg=41.27, stdev=44.56 lat (msec): min=5, max=945, avg=41.27, stdev=44.56 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 60], 90.00th=[ 93], 95.00th=[ 126], | 99.00th=[ 186], 99.50th=[ 197], 99.90th=[ 313], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 7, max= 128, per=25.41%, avg=38.37, stdev=25.83, samples=301 iops : min= 1, max= 32, avg= 8.92, stdev= 6.49, samples=301 write: IOPS=10, BW=40.0KiB/s (40.0kB/s)(6348KiB/158694msec); 0 zone resets clat (msec): min=9, max=331, avg=61.14, stdev=42.99 lat (msec): min=9, max=331, avg=61.15, stdev=42.99 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 40], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 70], 80.00th=[ 88], 90.00th=[ 121], 95.00th=[ 150], | 99.00th=[ 211], 99.50th=[ 251], 99.90th=[ 313], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 144, per=25.13%, avg=39.70, stdev=24.72, samples=310 iops : min= 1, max= 36, avg= 9.25, stdev= 6.22, samples=310 lat (msec) : 10=2.83%, 20=16.21%, 50=45.64%, 100=23.01%, 250=11.88% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.06%, sys=1.74%, 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=178707: Wed Aug 26 20:04:52 2026 read: IOPS=9, BW=38.2KiB/s (39.1kB/s)(6028KiB/157700msec) clat (msec): min=4, max=273, avg=41.07, stdev=37.70 lat (msec): min=4, max=273, avg=41.08, stdev=37.69 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 60], 90.00th=[ 95], 95.00th=[ 123], | 99.00th=[ 180], 99.50th=[ 220], 99.90th=[ 271], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 7, max= 126, per=25.40%, avg=38.35, stdev=24.57, samples=305 iops : min= 1, max= 31, avg= 8.91, stdev= 6.16, samples=305 write: IOPS=9, BW=39.7KiB/s (40.6kB/s)(6260KiB/157700msec); 0 zone resets clat (msec): min=11, max=955, avg=60.99, stdev=46.83 lat (msec): min=11, max=955, avg=60.99, stdev=46.83 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 55], | 70.00th=[ 68], 80.00th=[ 88], 90.00th=[ 120], 95.00th=[ 146], | 99.00th=[ 194], 99.50th=[ 247], 99.90th=[ 338], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 119, per=25.00%, avg=39.50, stdev=23.80, samples=307 iops : min= 1, max= 29, avg= 9.20, stdev= 5.99, samples=307 lat (msec) : 10=2.28%, 20=15.27%, 50=47.20%, 100=23.40%, 250=11.56% lat (msec) : 500=0.26%, 1000=0.03% cpu : usr=0.06%, sys=1.74%, ctx=4681, 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=178708: Wed Aug 26 20:04:52 2026 read: IOPS=9, BW=38.3KiB/s (39.3kB/s)(6052KiB/157843msec) clat (msec): min=5, max=306, avg=40.69, stdev=38.36 lat (msec): min=5, max=306, avg=40.69, stdev=38.36 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 57], 90.00th=[ 91], 95.00th=[ 121], | 99.00th=[ 194], 99.50th=[ 222], 99.90th=[ 275], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 7, max= 126, per=25.74%, avg=38.87, stdev=24.89, samples=301 iops : min= 1, max= 31, avg= 9.04, stdev= 6.25, samples=301 write: IOPS=9, BW=39.5KiB/s (40.5kB/s)(6236KiB/157843msec); 0 zone resets clat (msec): min=10, max=950, avg=61.51, stdev=47.19 lat (msec): min=10, max=950, avg=61.51, stdev=47.19 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 89], 90.00th=[ 117], 95.00th=[ 148], | 99.00th=[ 211], 99.50th=[ 251], 99.90th=[ 347], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 143, per=24.79%, avg=39.16, stdev=23.70, samples=308 iops : min= 1, max= 35, avg= 9.12, stdev= 5.96, samples=308 lat (msec) : 10=2.12%, 20=16.11%, 50=45.87%, 100=24.15%, 250=11.30% lat (msec) : 500=0.42%, 1000=0.03% cpu : usr=0.07%, sys=1.74%, ctx=4795, 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=151KiB/s (155kB/s), 37.4KiB/s-38.3KiB/s (38.3kB/s-39.3kB/s), io=23.4MiB (24.6MB), run=157700-158694msec WRITE: bw=158KiB/s (162kB/s), 39.5KiB/s-40.0KiB/s (40.5kB/s-40.0kB/s), io=24.6MiB (25.7MB), run=157700-158694msec 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=178762: Wed Aug 26 20:05:34 2026 read: IOPS=12, BW=199KiB/s (204kB/s)(5920KiB/29679msec) clat (usec): min=32, max=325588, avg=42497.46, stdev=32399.16 lat (usec): min=32, max=325590, avg=42498.88, stdev=32399.21 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 61], 10.00th=[ 151], 20.00th=[ 21890], | 30.00th=[ 26870], 40.00th=[ 31851], 50.00th=[ 37487], 60.00th=[ 43254], | 70.00th=[ 50594], 80.00th=[ 62653], 90.00th=[ 78119], 95.00th=[ 98042], | 99.00th=[149947], 99.50th=[168821], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 64, max= 411, per=25.71%, avg=197.98, stdev=67.44, samples=58 iops : min= 4, max= 25, avg=11.67, stdev= 4.17, samples=58 write: IOPS=13, BW=215KiB/s (220kB/s)(6368KiB/29679msec); 0 zone resets clat (usec): min=1451, max=206842, avg=34795.97, stdev=34714.74 lat (usec): min=1453, max=206843, avg=34799.23, stdev=34715.48 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1893], 10.00th=[ 2409], 20.00th=[ 4948], | 30.00th=[ 8291], 40.00th=[ 15139], 50.00th=[ 23987], 60.00th=[ 34341], | 70.00th=[ 45351], 80.00th=[ 58459], 90.00th=[ 88605], 95.00th=[107480], | 99.00th=[145753], 99.50th=[156238], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 31, max= 572, per=26.43%, avg=214.07, stdev=91.50, samples=58 iops : min= 1, max= 35, avg=12.67, stdev= 5.77, samples=58 lat (usec) : 50=0.78%, 100=3.91%, 250=0.39%, 500=0.26%, 750=0.13% lat (msec) : 2=3.52%, 4=5.21%, 10=8.85%, 20=9.64%, 50=38.80% lat (msec) : 100=23.44%, 250=4.95%, 500=0.13% cpu : usr=0.09%, sys=5.67%, ctx=1595, 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=178763: Wed Aug 26 20:05:34 2026 read: IOPS=11, BW=191KiB/s (196kB/s)(5744KiB/30036msec) clat (usec): min=37, max=250093, avg=43619.80, stdev=33117.84 lat (usec): min=37, max=250094, avg=43622.98, stdev=33125.18 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 63], 10.00th=[ 91], 20.00th=[ 20579], | 30.00th=[ 27657], 40.00th=[ 32637], 50.00th=[ 38011], 60.00th=[ 45351], | 70.00th=[ 53740], 80.00th=[ 60031], 90.00th=[ 78119], 95.00th=[101188], | 99.00th=[175113], 99.50th=[221250], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 30, max= 475, per=24.74%, avg=190.49, stdev=86.47, samples=59 iops : min= 1, max= 29, avg=11.19, stdev= 5.40, samples=59 write: IOPS=13, BW=218KiB/s (223kB/s)(6544KiB/30036msec); 0 zone resets clat (usec): min=1359, max=172582, avg=34547.43, stdev=33458.12 lat (usec): min=1360, max=172584, avg=34575.48, stdev=33474.45 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2442], 10.00th=[ 3490], 20.00th=[ 5669], | 30.00th=[ 7832], 40.00th=[ 15008], 50.00th=[ 24773], 60.00th=[ 33817], | 70.00th=[ 46400], 80.00th=[ 60031], 90.00th=[ 81265], 95.00th=[105382], | 99.00th=[139461], 99.50th=[145753], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 94, max= 443, per=26.90%, avg=217.90, stdev=84.14, samples=59 iops : min= 5, max= 27, avg=12.92, stdev= 5.28, samples=59 lat (usec) : 50=0.39%, 100=4.56%, 250=0.13% lat (msec) : 2=1.82%, 4=4.95%, 10=11.46%, 20=10.03%, 50=35.29% lat (msec) : 100=25.78%, 250=5.47%, 500=0.13% cpu : usr=0.06%, sys=5.80%, ctx=1703, 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=178764: Wed Aug 26 20:05:34 2026 read: IOPS=12, BW=201KiB/s (206kB/s)(6256KiB/31103msec) clat (usec): min=42, max=232118, avg=43080.54, stdev=29340.89 lat (usec): min=42, max=232119, avg=43082.90, stdev=29341.31 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 64], 10.00th=[ 109], 20.00th=[ 21103], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 46400], | 70.00th=[ 53740], 80.00th=[ 62653], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[133694], 99.50th=[149947], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 62, max= 381, per=25.96%, avg=199.92, stdev=70.63, samples=61 iops : min= 3, max= 23, avg=11.79, stdev= 4.42, samples=61 write: IOPS=12, BW=194KiB/s (199kB/s)(6032KiB/31103msec); 0 zone resets clat (usec): min=1276, max=294524, avg=37049.10, stdev=36590.38 lat (usec): min=1279, max=294526, avg=37053.33, stdev=36588.66 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1860], 10.00th=[ 3392], 20.00th=[ 5932], | 30.00th=[ 10028], 40.00th=[ 17695], 50.00th=[ 27132], 60.00th=[ 35914], | 70.00th=[ 47973], 80.00th=[ 62129], 90.00th=[ 90702], 95.00th=[108528], | 99.00th=[145753], 99.50th=[160433], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 31, max= 445, per=23.45%, avg=189.98, stdev=92.05, samples=61 iops : min= 1, max= 27, avg=11.16, stdev= 5.80, samples=61 lat (usec) : 50=0.39%, 100=4.56%, 250=0.91%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.99%, 4=3.39%, 10=8.46%, 20=9.90%, 50=36.85% lat (msec) : 100=25.91%, 250=6.12%, 500=0.13% cpu : usr=0.08%, sys=5.85%, ctx=1727, 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=178765: Wed Aug 26 20:05:34 2026 read: IOPS=13, BW=214KiB/s (219kB/s)(6032KiB/28235msec) clat (usec): min=41, max=252176, avg=41142.78, stdev=32182.07 lat (usec): min=41, max=252177, avg=41144.14, stdev=32182.04 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 61], 10.00th=[ 72], 20.00th=[ 19530], | 30.00th=[ 26346], 40.00th=[ 32113], 50.00th=[ 37487], 60.00th=[ 42730], | 70.00th=[ 50070], 80.00th=[ 60556], 90.00th=[ 76022], 95.00th=[ 94897], | 99.00th=[166724], 99.50th=[238027], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 414, per=28.25%, avg=217.52, stdev=86.40, samples=54 iops : min= 1, max= 25, avg=12.89, stdev= 5.39, samples=54 write: IOPS=13, BW=222KiB/s (227kB/s)(6256KiB/28235msec); 0 zone resets clat (usec): min=1191, max=188452, avg=31718.61, stdev=32374.76 lat (usec): min=1194, max=188454, avg=31725.80, stdev=32370.50 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1876], 10.00th=[ 3130], 20.00th=[ 5014], | 30.00th=[ 7046], 40.00th=[ 12911], 50.00th=[ 22152], 60.00th=[ 29754], | 70.00th=[ 41157], 80.00th=[ 55313], 90.00th=[ 77071], 95.00th=[ 96994], | 99.00th=[152044], 99.50th=[170918], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 95, max= 416, per=28.10%, avg=227.57, stdev=78.13, samples=54 iops : min= 5, max= 26, avg=13.52, stdev= 4.92, samples=54 lat (usec) : 50=0.65%, 100=5.21%, 250=0.65%, 500=0.52%, 750=0.13% lat (msec) : 2=3.12%, 4=4.82%, 10=11.20%, 20=8.20%, 50=38.02% lat (msec) : 100=23.44%, 250=3.91%, 500=0.13% cpu : usr=0.05%, sys=6.04%, ctx=1626, 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=770KiB/s (789kB/s), 191KiB/s-214KiB/s (196kB/s-219kB/s), io=23.4MiB (24.5MB), run=28235-31103msec WRITE: bw=810KiB/s (830kB/s), 194KiB/s-222KiB/s (199kB/s-227kB/s), io=24.6MiB (25.8MB), run=28235-31103msec fio: pid=178758, 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=178758: Wed Aug 26 20:05:46 2026 read: IOPS=7, BW=112KiB/s (114kB/s)(3984KiB/35666msec) clat (msec): min=7, max=266, avg=54.85, stdev=40.32 lat (msec): min=7, max=266, avg=54.86, stdev=40.32 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 36], 50.00th=[ 45], 60.00th=[ 52], | 70.00th=[ 61], 80.00th=[ 78], 90.00th=[ 115], 95.00th=[ 136], | 99.00th=[ 194], 99.50th=[ 220], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 30, max= 255, per=22.17%, avg=112.41, stdev=55.32, samples=69 iops : min= 1, max= 15, avg= 6.20, stdev= 3.49, samples=69 write: IOPS=7, BW=125KiB/s (128kB/s)(4448KiB/35666msec); 0 zone resets clat (msec): min=15, max=224, avg=78.20, stdev=41.85 lat (msec): min=15, max=224, avg=78.21, stdev=41.85 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 27], 10.00th=[ 34], 20.00th=[ 41], | 30.00th=[ 51], 40.00th=[ 58], 50.00th=[ 69], 60.00th=[ 83], | 70.00th=[ 95], 80.00th=[ 110], 90.00th=[ 140], 95.00th=[ 159], | 99.00th=[ 211], 99.50th=[ 222], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 28, max= 351, per=23.24%, avg=124.56, stdev=63.11, samples=70 iops : min= 1, max= 21, avg= 6.97, stdev= 3.95, samples=70 lat (msec) : 10=0.38%, 20=5.87%, 50=37.12%, 100=35.61%, 250=20.64% lat (msec) : 500=0.19% cpu : usr=0.03%, sys=1.47%, ctx=722, majf=0, minf=22 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=250,278,0,0 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=178759: Wed Aug 26 20:05:46 2026 read: IOPS=8, BW=133KiB/s (136kB/s)(5744KiB/43126msec) clat (msec): min=6, max=235, avg=46.00, stdev=39.27 lat (msec): min=6, max=235, avg=46.01, stdev=39.27 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 39], | 70.00th=[ 46], 80.00th=[ 67], 90.00th=[ 102], 95.00th=[ 140], | 99.00th=[ 209], 99.50th=[ 232], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 28, max= 409, per=26.66%, avg=135.17, stdev=81.41, samples=83 iops : min= 1, max= 25, avg= 7.64, stdev= 5.12, samples=83 write: IOPS=9, BW=152KiB/s (155kB/s)(6544KiB/43126msec); 0 zone resets clat (msec): min=11, max=217, avg=64.88, stdev=39.46 lat (msec): min=11, max=217, avg=64.89, stdev=39.47 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 66], | 70.00th=[ 77], 80.00th=[ 95], 90.00th=[ 127], 95.00th=[ 144], | 99.00th=[ 186], 99.50th=[ 201], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 31, max= 382, per=28.18%, avg=151.04, stdev=79.45, samples=85 iops : min= 1, max= 23, avg= 8.64, stdev= 4.99, samples=85 lat (msec) : 10=1.43%, 20=10.94%, 50=47.27%, 100=26.04%, 250=14.32% cpu : usr=0.04%, sys=1.89%, ctx=1282, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178760: Wed Aug 26 20:05:46 2026 read: IOPS=9, BW=148KiB/s (152kB/s)(6256KiB/42156msec) clat (msec): min=7, max=268, avg=42.74, stdev=36.31 lat (msec): min=7, max=268, avg=42.74, stdev=36.31 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 43], 80.00th=[ 58], 90.00th=[ 88], 95.00th=[ 122], | 99.00th=[ 184], 99.50th=[ 224], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 447, per=30.03%, avg=152.23, stdev=94.65, samples=81 iops : min= 1, max= 27, avg= 8.73, stdev= 5.91, samples=81 write: IOPS=8, BW=143KiB/s (147kB/s)(6032KiB/42156msec); 0 zone resets clat (msec): min=12, max=395, avg=67.01, stdev=46.54 lat (msec): min=12, max=395, avg=67.02, stdev=46.54 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 79], 80.00th=[ 97], 90.00th=[ 124], 95.00th=[ 163], | 99.00th=[ 245], 99.50th=[ 262], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 31, max= 384, per=26.36%, avg=141.28, stdev=78.27, samples=83 iops : min= 1, max= 24, avg= 8.04, stdev= 4.93, samples=83 lat (msec) : 10=1.30%, 20=12.89%, 50=46.61%, 100=26.43%, 250=12.24% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.86%, ctx=1293, 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=178761: Wed Aug 26 20:05:46 2026 read: IOPS=8, BW=139KiB/s (142kB/s)(6032KiB/43399msec) clat (msec): min=6, max=237, avg=45.11, stdev=36.79 lat (msec): min=6, max=237, avg=45.12, stdev=36.79 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 42], | 70.00th=[ 51], 80.00th=[ 64], 90.00th=[ 96], 95.00th=[ 129], | 99.00th=[ 176], 99.50th=[ 215], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 31, max= 447, per=29.01%, avg=147.10, stdev=83.44, samples=79 iops : min= 1, max= 27, avg= 8.39, stdev= 5.21, samples=79 write: IOPS=9, BW=144KiB/s (148kB/s)(6256KiB/43399msec); 0 zone resets clat (msec): min=9, max=398, avg=66.97, stdev=46.13 lat (msec): min=9, max=398, avg=66.97, stdev=46.13 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 54], 60.00th=[ 66], | 70.00th=[ 77], 80.00th=[ 99], 90.00th=[ 129], 95.00th=[ 157], | 99.00th=[ 243], 99.50th=[ 249], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 31, max= 416, per=26.51%, avg=142.12, stdev=81.47, samples=85 iops : min= 1, max= 26, avg= 8.08, stdev= 5.13, samples=85 lat (msec) : 10=1.56%, 20=11.33%, 50=45.31%, 100=28.26%, 250=13.41% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.03%, ctx=1377, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=507KiB/s (519kB/s), 112KiB/s-148KiB/s (114kB/s-152kB/s), io=21.5MiB (22.5MB), run=35666-43399msec WRITE: bw=536KiB/s (549kB/s), 125KiB/s-152KiB/s (128kB/s-155kB/s), io=22.7MiB (23.8MB), run=35666-43399msec 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=178783: Wed Aug 26 20:06:03 2026 read: IOPS=1, BW=1565KiB/s (1602kB/s)(7168KiB/4581msec) clat (msec): min=5, max=1545, avg=435.95, stdev=519.62 lat (msec): min=5, max=1545, avg=435.95, stdev=519.62 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 130], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 247], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 531], 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= 1822, max= 4208, per=61.91%, avg=2527.25, stdev=1125.20, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=1, BW=1118KiB/s (1144kB/s)(5120KiB/4581msec); 0 zone resets clat (msec): min=174, max=366, avg=291.93, stdev=92.42 lat (msec): min=180, max=367, avg=293.22, stdev=90.52 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 209], 40.00th=[ 209], 50.00th=[ 347], 60.00th=[ 347], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 1822, max= 4007, per=45.88%, avg=2622.67, stdev=1203.77, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 10=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=12.18%, ctx=255, 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=178784: Wed Aug 26 20:06:03 2026 read: IOPS=0, BW=408KiB/s (418kB/s)(2048KiB/5016msec) clat (usec): min=568, max=411645, avg=206107.09, stdev=290675.85 lat (usec): min=568, max=411648, avg=206108.63, stdev=290676.94 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[ 570], 50.00th=[ 570], 60.00th=[413139], | 70.00th=[413139], 80.00th=[413139], 90.00th=[413139], 95.00th=[413139], | 99.00th=[413139], 99.50th=[413139], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 1928, max= 2039, per=48.59%, avg=1983.50, stdev=78.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2041KiB/s (2090kB/s)(10.0MiB/5016msec); 0 zone resets clat (msec): min=175, max=1524, avg=426.38, stdev=393.64 lat (msec): min=175, max=1524, avg=426.48, stdev=393.64 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 292], 60.00th=[ 317], | 70.00th=[ 342], 80.00th=[ 414], 90.00th=[ 439], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 1822, max= 4096, per=44.77%, avg=2558.86, stdev=1046.86, samples=7 iops : min= 1, max= 4, avg= 1.71, stdev= 1.25, samples=7 lat (usec) : 750=8.33% lat (msec) : 250=8.33%, 500=75.00%, 2000=8.33% cpu : usr=0.00%, sys=11.98%, ctx=193, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178785: Wed Aug 26 20:06:03 2026 read: IOPS=1, BW=1326KiB/s (1357kB/s)(6144KiB/4635msec) clat (usec): min=597, max=499636, avg=211005.46, stdev=190362.04 lat (usec): min=599, max=499637, avg=211006.70, stdev=190361.95 clat percentiles (usec): | 1.00th=[ 594], 5.00th=[ 594], 10.00th=[ 594], 20.00th=[ 3261], | 30.00th=[ 3261], 40.00th=[214959], 50.00th=[214959], 60.00th=[240124], | 70.00th=[308282], 80.00th=[308282], 90.00th=[501220], 95.00th=[501220], | 99.00th=[501220], 99.50th=[501220], 99.90th=[501220], 99.95th=[501220], | 99.99th=[501220] bw ( KiB/s): min= 2031, max= 4007, per=80.62%, avg=3291.00, stdev=1094.58, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1326KiB/s (1357kB/s)(6144KiB/4635msec); 0 zone resets clat (msec): min=223, max=1240, avg=508.98, stdev=380.72 lat (msec): min=223, max=1240, avg=509.09, stdev=380.75 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 384], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 1917, max= 4079, per=43.42%, avg=2481.75, stdev=1065.52, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=25.00%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=10.92%, ctx=220, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178786: Wed Aug 26 20:06:03 2026 read: IOPS=1, BW=1222KiB/s (1252kB/s)(5120KiB/4189msec) clat (usec): min=1638, max=299988, avg=156279.90, stdev=120235.11 lat (usec): min=1639, max=299989, avg=156281.16, stdev=120235.33 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1647], 10.00th=[ 1647], 20.00th=[ 1647], | 30.00th=[ 68682], 40.00th=[ 68682], 50.00th=[185598], 60.00th=[185598], | 70.00th=[225444], 80.00th=[225444], 90.00th=[299893], 95.00th=[299893], | 99.00th=[299893], 99.50th=[299893], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 7713, max= 7713, per=100.00%, avg=7713.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1711KiB/s (1752kB/s)(7168KiB/4189msec); 0 zone resets clat (msec): min=142, max=1204, avg=441.73, stdev=410.51 lat (msec): min=142, max=1204, avg=441.99, stdev=410.42 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 180], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 249], 60.00th=[ 257], | 70.00th=[ 257], 80.00th=[ 835], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 1467, max= 3835, per=39.10%, avg=2235.00, stdev=923.20, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 2=8.33%, 100=8.33%, 250=50.00%, 500=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=11.37%, ctx=159, 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=4083KiB/s (4181kB/s), 408KiB/s-1565KiB/s (418kB/s-1602kB/s), io=20.0MiB (20.0MB), run=4189-5016msec WRITE: bw=5716KiB/s (5853kB/s), 1118KiB/s-2041KiB/s (1144kB/s-2090kB/s), io=28.0MiB (29.4MB), run=4189-5016msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178778: Wed Aug 26 20:06:03 2026 read: IOPS=1, BW=1356KiB/s (1388kB/s)(7168KiB/5287msec) clat (msec): min=80, max=1029, avg=462.43, stdev=413.85 lat (msec): min=80, max=1029, avg=462.43, stdev=413.85 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 104], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 268], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 1020], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 1896, max= 3946, per=60.32%, avg=2336.00, stdev=901.06, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=968KiB/s (992kB/s)(5120KiB/5287msec); 0 zone resets clat (msec): min=177, max=617, avg=347.66, stdev=173.74 lat (msec): min=177, max=617, avg=347.79, stdev=173.73 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 1973, max= 6083, per=74.28%, avg=4028.00, stdev=2906.21, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 2000=16.67% cpu : usr=0.00%, sys=4.14%, ctx=149, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178779: Wed Aug 26 20:06:03 2026 read: IOPS=0, BW=421KiB/s (431kB/s)(2048KiB/4864msec) clat (msec): min=130, max=155, avg=143.13, stdev=17.72 lat (msec): min=130, max=155, avg=143.13, stdev=17.72 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 131], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 131], 60.00th=[ 157], | 70.00th=[ 157], 80.00th=[ 157], 90.00th=[ 157], 95.00th=[ 157], | 99.00th=[ 157], 99.50th=[ 157], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 2027, max= 2027, per=52.34%, avg=2027.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2105KiB/s (2156kB/s)(10.0MiB/4864msec); 0 zone resets clat (msec): min=164, max=1489, avg=437.97, stdev=387.13 lat (msec): min=165, max=1489, avg=438.33, stdev=387.03 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 184], | 30.00th=[ 259], 40.00th=[ 266], 50.00th=[ 284], 60.00th=[ 355], | 70.00th=[ 384], 80.00th=[ 468], 90.00th=[ 523], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 2007, max= 4055, per=55.10%, avg=2988.00, stdev=1056.44, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=5.06%, ctx=101, 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=178781: Wed Aug 26 20:06:03 2026 read: IOPS=1, BW=1188KiB/s (1216kB/s)(6144KiB/5172msec) clat (msec): min=148, max=1413, avg=472.72, stdev=472.35 lat (msec): min=148, max=1413, avg=472.72, stdev=472.35 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 372], | 70.00th=[ 414], 80.00th=[ 414], 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= 1896, max= 3842, per=62.96%, avg=2438.50, stdev=937.59, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1188KiB/s (1216kB/s)(6144KiB/5172msec); 0 zone resets clat (msec): min=111, max=992, avg=380.72, stdev=357.86 lat (msec): min=111, max=992, avg=381.03, stdev=357.74 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 123], | 30.00th=[ 123], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 218], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 1921, max= 3923, per=43.75%, avg=2372.60, stdev=867.80, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.02%, sys=2.92%, ctx=73, 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=178782: Wed Aug 26 20:06:03 2026 read: IOPS=1, BW=1166KiB/s (1194kB/s)(5120KiB/4390msec) clat (msec): min=88, max=1133, avg=396.42, stdev=434.02 lat (msec): min=88, max=1133, avg=396.42, stdev=434.02 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 89], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 186], 60.00th=[ 186], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 1872, max= 6144, per=100.00%, avg=4008.00, stdev=3020.76, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1633KiB/s (1672kB/s)(7168KiB/4390msec); 0 zone resets clat (msec): min=111, max=540, avg=319.32, stdev=167.19 lat (msec): min=115, max=540, avg=319.99, stdev=166.40 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 138], | 30.00th=[ 253], 40.00th=[ 253], 50.00th=[ 313], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 506], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1448, max= 4031, per=49.39%, avg=2678.60, stdev=1242.26, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 2000=8.33% cpu : usr=0.02%, sys=4.78%, ctx=101, 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=3874KiB/s (3967kB/s), 421KiB/s-1356KiB/s (431kB/s-1388kB/s), io=20.0MiB (20.0MB), run=4390-5287msec WRITE: bw=5423KiB/s (5553kB/s), 968KiB/s-2105KiB/s (992kB/s-2156kB/s), io=28.0MiB (29.4MB), run=4390-5287msec 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=178794: Wed Aug 26 20:06:17 2026 read: IOPS=1, BW=6015KiB/s (6159kB/s)(12.0MiB/2043msec) clat (msec): min=579, max=733, avg=667.36, stdev=79.09 lat (msec): min=579, max=733, avg=667.36, stdev=79.09 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 8110, max= 8175, per=100.00%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=14.84%, ctx=333, 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=178795: Wed Aug 26 20:06:17 2026 read: IOPS=0, BW=2619KiB/s (2682kB/s)(4096KiB/1564msec) clat (nsec): min=598716k, max=598716k, avg=598716201.00, stdev= 0.00 lat (nsec): min=598720k, max=598720k, avg=598719798.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 600], 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= 5580, max= 5580, per=69.58%, avg=5580.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5238KiB/s (5364kB/s)(8192KiB/1564msec); 0 zone resets clat (msec): min=446, max=448, avg=447.47, stdev= 1.94 lat (msec): min=446, max=449, avg=447.95, stdev= 1.90 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 451], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 8175, max= 8175, per=68.03%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=9.21%, ctx=208, 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=178797: Wed Aug 26 20:06:17 2026 write: IOPS=1, BW=4506KiB/s (4614kB/s)(12.0MiB/2727msec); 0 zone resets clat (msec): min=368, max=1196, avg=838.63, stdev=425.15 lat (msec): min=374, max=1196, avg=841.28, stdev=422.42 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8143, max= 8175, per=67.90%, avg=8159.00, stdev=22.63, 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=4.77%, ctx=57, 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=178800: Wed Aug 26 20:06:17 2026 write: IOPS=1, BW=4808KiB/s (4923kB/s)(12.0MiB/2556msec); 0 zone resets clat (msec): min=236, max=1750, avg=779.95, stdev=842.29 lat (msec): min=236, max=1750, avg=781.23, stdev=841.66 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 5704, max= 8110, per=57.48%, avg=6907.00, stdev=1701.30, 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=0.08%, sys=5.95%, ctx=50, 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=8020KiB/s (8212kB/s), 2619KiB/s-6015KiB/s (2682kB/s-6159kB/s), io=16.0MiB (16.8MB), run=1564-2043msec WRITE: bw=11.7MiB/s (12.3MB/s), 4506KiB/s-5238KiB/s (4614kB/s-5364kB/s), io=32.0MiB (33.6MB), run=1564-2727msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178796: Wed Aug 26 20:06:18 2026 read: IOPS=0, BW=3870KiB/s (3963kB/s)(12.0MiB/3175msec) clat (msec): min=144, max=1775, avg=969.00, stdev=815.40 lat (msec): min=144, max=1775, avg=969.00, stdev=815.40 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.47%, ctx=43, 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=178798: Wed Aug 26 20:06:18 2026 read: IOPS=0, BW=1470KiB/s (1505kB/s)(4096KiB/2786msec) clat (nsec): min=737408k, max=737408k, avg=737408445.00, stdev= 0.00 lat (nsec): min=737411k, max=737411k, avg=737411344.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7876, max= 7876, per=100.00%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2940KiB/s (3011kB/s)(8192KiB/2786msec); 0 zone resets clat (msec): min=976, max=1034, avg=1005.58, stdev=41.31 lat (msec): min=977, max=1035, avg=1006.13, stdev=41.13 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 1036], | 70.00th=[ 1036], 80.00th=[ 1036], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 8159, max= 8159, per=71.64%, avg=8159.00, 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=3.16%, ctx=45, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178799: Wed Aug 26 20:06:18 2026 write: IOPS=1, BW=4271KiB/s (4374kB/s)(12.0MiB/2877msec); 0 zone resets clat (msec): min=404, max=1414, avg=916.80, stdev=505.14 lat (msec): min=404, max=1414, avg=917.24, stdev=505.10 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 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= 8094, max= 8126, per=71.21%, avg=8110.00, stdev=22.63, 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=4.00%, ctx=44, 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=178801: Wed Aug 26 20:06:18 2026 write: IOPS=1, BW=4514KiB/s (4623kB/s)(12.0MiB/2722msec); 0 zone resets clat (msec): min=396, max=1831, avg=876.02, stdev=827.39 lat (msec): min=397, max=1833, avg=877.90, stdev=827.32 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 401], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 1838], 80.00th=[ 1838], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 5728, max= 8126, per=60.82%, avg=6927.00, stdev=1695.64, 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=4.37%, ctx=49, 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=5160KiB/s (5284kB/s), 1470KiB/s-3870KiB/s (1505kB/s-3963kB/s), io=16.0MiB (16.8MB), run=2786-3175msec WRITE: bw=11.1MiB/s (11.7MB/s), 2940KiB/s-4514KiB/s (3011kB/s-4623kB/s), io=32.0MiB (33.6MB), run=2722-2877msec