== sanity test 398b: DIO and buffer IO race ============== 13:22:27 (1788196947) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.04818 s, 10.0 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=180033: Mon Aug 31 13:24:45 2026 read: IOPS=12, BW=49.9KiB/s (51.1kB/s)(5992KiB/120163msec) clat (usec): min=30, max=206718, avg=43438.90, stdev=28451.24 lat (usec): min=30, max=206719, avg=43445.39, stdev=28448.51 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10159], 10.00th=[ 16581], 20.00th=[ 22414], | 30.00th=[ 26870], 40.00th=[ 32375], 50.00th=[ 37487], 60.00th=[ 42730], | 70.00th=[ 50594], 80.00th=[ 61604], 90.00th=[ 79168], 95.00th=[ 94897], | 99.00th=[152044], 99.50th=[175113], 99.90th=[200279], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 7, max= 118, per=25.06%, avg=49.88, stdev=18.69, samples=234 iops : min= 1, max= 29, avg=11.82, stdev= 4.70, samples=234 write: IOPS=13, BW=52.4KiB/s (53.7kB/s)(6296KiB/120163msec); 0 zone resets clat (usec): min=892, max=1040.3k, avg=34663.60, stdev=42519.96 lat (usec): min=894, max=1040.3k, avg=34669.77, stdev=42520.38 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1352], 10.00th=[ 1680], | 20.00th=[ 3654], 30.00th=[ 7177], 40.00th=[ 15926], | 50.00th=[ 25297], 60.00th=[ 34866], 70.00th=[ 44827], | 80.00th=[ 58459], 90.00th=[ 81265], 95.00th=[ 102237], | 99.00th=[ 149947], 99.50th=[ 166724], 99.90th=[ 221250], | 99.95th=[1044382], 99.99th=[1044382] bw ( KiB/s): min= 8, max= 132, per=24.86%, avg=51.96, stdev=22.04, samples=236 iops : min= 2, max= 33, avg=12.35, stdev= 5.53, samples=236 lat (usec) : 50=0.33%, 100=1.30%, 250=0.10%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=6.09%, 4=4.69%, 10=7.16%, 20=10.16%, 50=41.80% lat (msec) : 100=23.34%, 250=4.75%, 2000=0.03% cpu : usr=0.06%, sys=4.87%, ctx=6590, 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=180034: Mon Aug 31 13:24:45 2026 read: IOPS=12, BW=49.6KiB/s (50.8kB/s)(5940KiB/119691msec) clat (usec): min=42, max=1173.1k, avg=45033.42, stdev=39664.43 lat (usec): min=43, max=1173.1k, avg=45037.76, stdev=39664.00 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 14222], 10.00th=[ 18220], | 20.00th=[ 23200], 30.00th=[ 27657], 40.00th=[ 32900], | 50.00th=[ 38536], 60.00th=[ 44827], 70.00th=[ 52691], | 80.00th=[ 61080], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[ 139461], 99.50th=[ 158335], 99.90th=[ 196084], | 99.95th=[1166017], 99.99th=[1166017] bw ( KiB/s): min= 7, max= 112, per=24.99%, avg=49.73, stdev=18.19, samples=233 iops : min= 1, max= 28, avg=11.78, stdev= 4.59, samples=233 write: IOPS=13, BW=53.0KiB/s (54.3kB/s)(6348KiB/119691msec); 0 zone resets clat (usec): min=938, max=207395, avg=32971.70, stdev=33349.81 lat (usec): min=939, max=207396, avg=32976.52, stdev=33347.88 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1319], 10.00th=[ 1483], 20.00th=[ 3097], | 30.00th=[ 6783], 40.00th=[ 14615], 50.00th=[ 25035], 60.00th=[ 33162], | 70.00th=[ 43254], 80.00th=[ 58983], 90.00th=[ 79168], 95.00th=[ 96994], | 99.00th=[141558], 99.50th=[160433], 99.90th=[198181], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 7, max= 151, per=25.22%, avg=52.72, stdev=23.78, samples=234 iops : min= 1, max= 37, avg=12.54, stdev= 5.98, samples=234 lat (usec) : 50=0.07%, 100=0.68%, 250=0.13%, 750=0.03%, 1000=0.07% lat (msec) : 2=7.19%, 4=4.65%, 10=6.84%, 20=9.70%, 50=41.21% lat (msec) : 100=24.97%, 250=4.43%, 2000=0.03% cpu : usr=0.08%, sys=5.00%, ctx=6596, 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=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=180035: Mon Aug 31 13:24:45 2026 read: IOPS=12, BW=51.0KiB/s (52.3kB/s)(6028KiB/118132msec) clat (usec): min=34, max=229686, avg=42881.46, stdev=27718.74 lat (usec): min=34, max=229688, avg=42886.80, stdev=27718.45 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10814], 10.00th=[ 15664], 20.00th=[ 21627], | 30.00th=[ 26608], 40.00th=[ 31327], 50.00th=[ 36963], 60.00th=[ 43779], | 70.00th=[ 51119], 80.00th=[ 61080], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[139461], 99.50th=[158335], 99.90th=[219153], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 7, max= 111, per=25.57%, avg=50.89, stdev=20.48, samples=231 iops : min= 1, max= 27, avg=12.07, stdev= 5.17, samples=231 write: IOPS=13, BW=52.0KiB/s (54.3kB/s)(6260KiB/118132msec); 0 zone resets clat (usec): min=979, max=1098.5k, avg=33866.88, stdev=43853.61 lat (usec): min=980, max=1098.5k, avg=33870.64, stdev=43853.02 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1336], 10.00th=[ 1647], | 20.00th=[ 3621], 30.00th=[ 7242], 40.00th=[ 15401], | 50.00th=[ 23200], 60.00th=[ 31851], 70.00th=[ 41681], | 80.00th=[ 57410], 90.00th=[ 81265], 95.00th=[ 103285], | 99.00th=[ 154141], 99.50th=[ 164627], 99.90th=[ 240124], | 99.95th=[1098908], 99.99th=[1098908] bw ( KiB/s): min= 7, max= 143, per=25.18%, avg=52.62, stdev=22.96, samples=232 iops : min= 1, max= 35, avg=12.52, stdev= 5.76, samples=232 lat (usec) : 50=0.33%, 100=1.43%, 250=0.13%, 500=0.03%, 1000=0.10% lat (msec) : 2=6.22%, 4=4.39%, 10=7.03%, 20=11.91%, 50=40.85% lat (msec) : 100=23.08%, 250=4.46%, 2000=0.03% cpu : usr=0.06%, sys=4.81%, ctx=6466, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180037: Mon Aug 31 13:24:45 2026 read: IOPS=12, BW=51.6KiB/s (52.9kB/s)(6052KiB/117200msec) clat (usec): min=23, max=1161.2k, avg=43540.10, stdev=39434.21 lat (usec): min=23, max=1161.2k, avg=43541.99, stdev=39433.95 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10945], 10.00th=[ 17171], | 20.00th=[ 21890], 30.00th=[ 26870], 40.00th=[ 32113], | 50.00th=[ 37487], 60.00th=[ 43779], 70.00th=[ 51119], | 80.00th=[ 60556], 90.00th=[ 76022], 95.00th=[ 92799], | 99.00th=[ 139461], 99.50th=[ 164627], 99.90th=[ 202376], | 99.95th=[1166017], 99.99th=[1166017] bw ( KiB/s): min= 7, max= 134, per=25.88%, avg=51.51, stdev=19.03, samples=229 iops : min= 1, max= 33, avg=12.23, stdev= 4.78, samples=229 write: IOPS=13, BW=53.2KiB/s (54.5kB/s)(6236KiB/117200msec); 0 zone resets clat (usec): min=909, max=259609, avg=32567.14, stdev=33344.43 lat (usec): min=911, max=259610, avg=32571.77, stdev=33350.62 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1352], 10.00th=[ 1762], 20.00th=[ 3916], | 30.00th=[ 7308], 40.00th=[ 15139], 50.00th=[ 24511], 60.00th=[ 31327], | 70.00th=[ 40109], 80.00th=[ 55313], 90.00th=[ 79168], 95.00th=[ 96994], | 99.00th=[145753], 99.50th=[166724], 99.90th=[206570], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 7, max= 135, per=25.36%, avg=53.00, stdev=22.39, samples=229 iops : min= 1, max= 33, avg=12.61, stdev= 5.61, samples=229 lat (usec) : 50=0.33%, 100=1.43%, 250=0.10%, 500=0.07%, 1000=0.13% lat (msec) : 2=5.57%, 4=4.69%, 10=7.19%, 20=10.58%, 50=42.51% lat (msec) : 100=23.27%, 250=4.07%, 500=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.82%, ctx=6380, 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=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=200KiB/s (205kB/s), 49.6KiB/s-51.6KiB/s (50.8kB/s-52.9kB/s), io=23.4MiB (24.6MB), run=117200-120163msec WRITE: bw=209KiB/s (214kB/s), 52.4KiB/s-53.2KiB/s (53.7kB/s-54.5kB/s), io=24.6MiB (25.7MB), run=117200-120163msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180038: Mon Aug 31 13:25:26 2026 read: IOPS=9, BW=37.4KiB/s (38.3kB/s)(5992KiB/160289msec) clat (msec): min=5, max=1061, avg=42.28, stdev=44.07 lat (msec): min=5, max=1061, avg=42.28, stdev=44.07 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 44], 80.00th=[ 60], 90.00th=[ 91], 95.00th=[ 120], | 99.00th=[ 174], 99.50th=[ 188], 99.90th=[ 247], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 151, per=25.56%, avg=37.83, stdev=24.50, samples=308 iops : min= 1, max= 37, avg= 8.78, stdev= 6.15, samples=308 write: IOPS=9, BW=39.3KiB/s (40.2kB/s)(6296KiB/160289msec); 0 zone resets clat (msec): min=9, max=317, avg=61.27, stdev=42.39 lat (msec): min=9, max=317, avg=61.28, stdev=42.39 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 49], 60.00th=[ 58], | 70.00th=[ 71], 80.00th=[ 88], 90.00th=[ 117], 95.00th=[ 144], | 99.00th=[ 222], 99.50th=[ 247], 99.90th=[ 305], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 7, max= 141, per=25.23%, avg=39.10, stdev=23.37, samples=313 iops : min= 1, max= 35, avg= 9.09, stdev= 5.89, samples=313 lat (msec) : 10=1.89%, 20=15.59%, 50=45.41%, 100=25.33%, 250=11.52% lat (msec) : 500=0.23%, 2000=0.03% cpu : usr=0.06%, sys=1.99%, ctx=4780, 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=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=180039: Mon Aug 31 13:25:26 2026 read: IOPS=9, BW=37.1KiB/s (37.9kB/s)(5940KiB/160280msec) clat (msec): min=4, max=1103, avg=41.48, stdev=44.29 lat (msec): min=4, max=1103, avg=41.48, stdev=44.29 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 86], 95.00th=[ 116], | 99.00th=[ 178], 99.50th=[ 194], 99.90th=[ 264], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 119, per=25.40%, avg=37.60, stdev=23.66, samples=307 iops : min= 1, max= 29, avg= 8.72, stdev= 5.96, samples=307 write: IOPS=9, BW=39.6KiB/s (40.6kB/s)(6348KiB/160280msec); 0 zone resets clat (msec): min=7, max=282, avg=61.86, stdev=40.38 lat (msec): min=7, max=282, avg=61.86, stdev=40.38 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 58], | 70.00th=[ 72], 80.00th=[ 92], 90.00th=[ 118], 95.00th=[ 144], | 99.00th=[ 190], 99.50th=[ 228], 99.90th=[ 279], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 7, max= 142, per=25.38%, avg=39.33, stdev=22.59, samples=314 iops : min= 1, max= 35, avg= 9.15, stdev= 5.69, samples=314 lat (msec) : 10=1.76%, 20=13.83%, 50=47.56%, 100=25.07%, 250=11.52% lat (msec) : 500=0.23%, 2000=0.03% cpu : usr=0.06%, sys=2.00%, ctx=4766, 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=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=180040: Mon Aug 31 13:25:26 2026 read: IOPS=9, BW=37.2KiB/s (38.1kB/s)(6028KiB/161969msec) clat (msec): min=5, max=287, avg=41.89, stdev=35.79 lat (msec): min=5, max=287, avg=41.89, stdev=35.79 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 59], 90.00th=[ 91], 95.00th=[ 117], | 99.00th=[ 167], 99.50th=[ 209], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 7, max= 159, per=25.45%, avg=37.67, stdev=24.96, samples=309 iops : min= 1, max= 39, avg= 8.74, stdev= 6.28, samples=309 write: IOPS=9, BW=38.6KiB/s (39.6kB/s)(6260KiB/161969msec); 0 zone resets clat (msec): min=10, max=1196, avg=62.91, stdev=51.27 lat (msec): min=10, max=1196, avg=62.91, stdev=51.27 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 58], | 70.00th=[ 70], 80.00th=[ 90], 90.00th=[ 122], 95.00th=[ 150], | 99.00th=[ 224], 99.50th=[ 236], 99.90th=[ 300], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 127, per=24.60%, avg=38.13, stdev=22.33, samples=317 iops : min= 1, max= 31, avg= 8.85, stdev= 5.62, samples=317 lat (msec) : 10=2.28%, 20=14.03%, 50=46.29%, 100=25.07%, 250=12.08% lat (msec) : 500=0.23%, 2000=0.03% cpu : usr=0.06%, sys=2.02%, ctx=4887, 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=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=180041: Mon Aug 31 13:25:26 2026 read: IOPS=9, BW=37.5KiB/s (38.4kB/s)(6052KiB/161403msec) clat (msec): min=4, max=236, avg=42.72, stdev=36.80 lat (msec): min=4, max=236, avg=42.72, stdev=36.80 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 94], 95.00th=[ 127], | 99.00th=[ 176], 99.50th=[ 192], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 7, max= 175, per=26.17%, avg=38.74, stdev=24.93, samples=303 iops : min= 1, max= 43, avg= 9.01, stdev= 6.27, samples=303 write: IOPS=9, BW=38.6KiB/s (39.6kB/s)(6236KiB/161403msec); 0 zone resets clat (msec): min=8, max=1178, avg=61.82, stdev=50.97 lat (msec): min=8, max=1178, avg=61.82, stdev=50.97 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 58], | 70.00th=[ 70], 80.00th=[ 88], 90.00th=[ 120], 95.00th=[ 148], | 99.00th=[ 213], 99.50th=[ 257], 99.90th=[ 321], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 127, per=24.97%, avg=38.70, stdev=23.03, samples=312 iops : min= 1, max= 31, avg= 8.99, stdev= 5.79, samples=312 lat (msec) : 10=1.76%, 20=14.75%, 50=46.61%, 100=25.07%, 250=11.52% lat (msec) : 500=0.26%, 2000=0.03% cpu : usr=0.05%, sys=2.02%, ctx=4899, 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=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=148KiB/s (152kB/s), 37.1KiB/s-37.5KiB/s (37.9kB/s-38.4kB/s), io=23.4MiB (24.6MB), run=160280-161969msec WRITE: bw=155KiB/s (159kB/s), 38.6KiB/s-39.6KiB/s (39.6kB/s-40.6kB/s), io=24.6MiB (25.7MB), run=160280-161969msec 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=180086: Mon Aug 31 13:26:13 2026 read: IOPS=10, BW=176KiB/s (180kB/s)(5920KiB/33703msec) clat (usec): min=42, max=236619, avg=48069.56, stdev=33368.88 lat (usec): min=42, max=236621, avg=48070.64, stdev=33368.89 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 61], 10.00th=[ 89], 20.00th=[ 25035], | 30.00th=[ 31589], 40.00th=[ 36963], 50.00th=[ 43254], 60.00th=[ 50070], | 70.00th=[ 57410], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[104334], | 99.00th=[177210], 99.50th=[212861], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 31, max= 350, per=26.33%, avg=174.86, stdev=77.79, samples=66 iops : min= 1, max= 21, avg=10.15, stdev= 4.91, samples=66 write: IOPS=11, BW=189KiB/s (193kB/s)(6368KiB/33703msec); 0 zone resets clat (usec): min=1230, max=245410, avg=39575.23, stdev=40340.41 lat (usec): min=1232, max=245412, avg=39577.38, stdev=40340.14 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2008], 10.00th=[ 2737], 20.00th=[ 5997], | 30.00th=[ 10421], 40.00th=[ 19006], 50.00th=[ 27132], 60.00th=[ 37487], | 70.00th=[ 51643], 80.00th=[ 64750], 90.00th=[ 99091], 95.00th=[119014], | 99.00th=[187696], 99.50th=[223347], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 31, max= 478, per=27.07%, avg=188.97, stdev=81.89, samples=66 iops : min= 1, max= 29, avg=11.05, stdev= 5.16, samples=66 lat (usec) : 50=0.26%, 100=4.56% lat (msec) : 2=2.47%, 4=5.73%, 10=6.90%, 20=8.46%, 50=36.33% lat (msec) : 100=27.60%, 250=7.68% cpu : usr=0.06%, sys=5.06%, ctx=1596, 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=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=180087: Mon Aug 31 13:26:13 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(5744KiB/35704msec) clat (usec): min=35, max=212439, avg=52848.30, stdev=36707.55 lat (usec): min=35, max=212440, avg=52860.18, stdev=36707.18 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 68], 10.00th=[ 13304], 20.00th=[ 26084], | 30.00th=[ 33817], 40.00th=[ 39584], 50.00th=[ 45876], 60.00th=[ 53740], | 70.00th=[ 63177], 80.00th=[ 77071], 90.00th=[ 99091], 95.00th=[121111], | 99.00th=[193987], 99.50th=[196084], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 22, max= 413, per=24.57%, avg=163.14, stdev=72.78, samples=69 iops : min= 1, max= 25, avg= 9.42, stdev= 4.60, samples=69 write: IOPS=11, BW=183KiB/s (188kB/s)(6544KiB/35704msec); 0 zone resets clat (usec): min=1165, max=285665, avg=40015.47, stdev=42482.20 lat (usec): min=1167, max=285668, avg=40017.86, stdev=42481.95 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 2008], 10.00th=[ 2606], 20.00th=[ 5145], | 30.00th=[ 9372], 40.00th=[ 16909], 50.00th=[ 26346], 60.00th=[ 36439], | 70.00th=[ 50070], 80.00th=[ 70779], 90.00th=[100140], 95.00th=[126354], | 99.00th=[179307], 99.50th=[200279], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 29, max= 414, per=26.22%, avg=183.04, stdev=84.14, samples=70 iops : min= 1, max= 25, avg=10.67, stdev= 5.32, samples=70 lat (usec) : 50=0.39%, 100=3.52%, 250=0.26% lat (msec) : 2=2.60%, 4=5.73%, 10=8.33%, 20=8.46%, 50=34.51% lat (msec) : 100=26.69%, 250=9.38%, 500=0.13% cpu : usr=0.06%, sys=4.92%, ctx=1660, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180088: Mon Aug 31 13:26:13 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(6256KiB/36055msec) clat (usec): min=31, max=322422, avg=52922.07, stdev=39089.34 lat (usec): min=32, max=322423, avg=52923.43, stdev=39089.43 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 64], 10.00th=[ 14746], 20.00th=[ 26084], | 30.00th=[ 32375], 40.00th=[ 39060], 50.00th=[ 45351], 60.00th=[ 52691], | 70.00th=[ 64226], 80.00th=[ 77071], 90.00th=[ 96994], 95.00th=[121111], | 99.00th=[185598], 99.50th=[217056], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 31, max= 380, per=26.14%, avg=173.54, stdev=79.85, samples=70 iops : min= 1, max= 23, avg=10.07, stdev= 5.04, samples=70 write: IOPS=10, BW=167KiB/s (171kB/s)(6032KiB/36055msec); 0 zone resets clat (usec): min=1397, max=213793, avg=39775.36, stdev=40521.96 lat (usec): min=1399, max=213796, avg=39780.91, stdev=40520.60 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1942], 10.00th=[ 3294], 20.00th=[ 6521], | 30.00th=[ 10421], 40.00th=[ 15533], 50.00th=[ 26346], 60.00th=[ 38536], | 70.00th=[ 50070], 80.00th=[ 68682], 90.00th=[ 95945], 95.00th=[128451], | 99.00th=[179307], 99.50th=[198181], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 31, max= 508, per=23.61%, avg=164.77, stdev=90.08, samples=70 iops : min= 1, max= 31, avg= 9.51, stdev= 5.68, samples=70 lat (usec) : 50=0.13%, 100=4.04%, 250=0.13% lat (msec) : 2=2.60%, 4=2.99%, 10=9.11%, 20=9.24%, 50=35.29% lat (msec) : 100=27.99%, 250=8.33%, 500=0.13% cpu : usr=0.07%, sys=5.05%, ctx=1732, 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=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=180089: Mon Aug 31 13:26:13 2026 read: IOPS=11, BW=177KiB/s (182kB/s)(6032KiB/34010msec) clat (usec): min=42, max=248407, avg=49605.23, stdev=37729.96 lat (usec): min=43, max=248408, avg=49611.10, stdev=37726.16 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 66], 10.00th=[ 102], 20.00th=[ 21627], | 30.00th=[ 29754], 40.00th=[ 34866], 50.00th=[ 42730], 60.00th=[ 52691], | 70.00th=[ 62129], 80.00th=[ 76022], 90.00th=[ 93848], 95.00th=[114820], | 99.00th=[175113], 99.50th=[244319], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 445, per=26.97%, avg=179.09, stdev=81.23, samples=65 iops : min= 1, max= 27, avg=10.42, stdev= 5.11, samples=65 write: IOPS=11, BW=184KiB/s (188kB/s)(6256KiB/34010msec); 0 zone resets clat (usec): min=1397, max=213453, avg=38086.99, stdev=38213.32 lat (usec): min=1399, max=213455, avg=38089.64, stdev=38213.31 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2278], 10.00th=[ 3228], 20.00th=[ 6194], | 30.00th=[ 9765], 40.00th=[ 17695], 50.00th=[ 28443], 60.00th=[ 37487], | 70.00th=[ 47449], 80.00th=[ 61604], 90.00th=[ 88605], 95.00th=[116917], | 99.00th=[181404], 99.50th=[198181], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 31, max= 411, per=26.14%, avg=182.48, stdev=83.56, samples=66 iops : min= 1, max= 25, avg=10.62, stdev= 5.29, samples=66 lat (usec) : 50=0.26%, 100=4.56%, 250=0.78%, 500=0.13%, 750=0.13% lat (msec) : 2=1.69%, 4=4.95%, 10=8.98%, 20=8.85%, 50=34.90% lat (msec) : 100=26.69%, 250=8.07% cpu : usr=0.04%, sys=4.94%, ctx=1653, 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=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=664KiB/s (680kB/s), 161KiB/s-177KiB/s (165kB/s-182kB/s), io=23.4MiB (24.5MB), run=33703-36055msec WRITE: bw=699KiB/s (716kB/s), 167KiB/s-189KiB/s (171kB/s-193kB/s), io=24.6MiB (25.8MB), run=33703-36055msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180082: Mon Aug 31 13:26:26 2026 read: IOPS=7, BW=121KiB/s (124kB/s)(5920KiB/48880msec) clat (msec): min=7, max=275, avg=53.75, stdev=44.44 lat (msec): min=7, max=275, avg=53.75, stdev=44.44 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 47], | 70.00th=[ 60], 80.00th=[ 78], 90.00th=[ 114], 95.00th=[ 148], | 99.00th=[ 203], 99.50th=[ 222], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 384, per=25.19%, avg=122.16, stdev=75.49, samples=94 iops : min= 1, max= 24, avg= 6.85, stdev= 4.78, samples=94 write: IOPS=8, BW=130KiB/s (133kB/s)(6368KiB/48880msec); 0 zone resets clat (msec): min=15, max=462, avg=72.27, stdev=52.90 lat (msec): min=15, max=462, avg=72.27, stdev=52.90 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 49], 50.00th=[ 56], 60.00th=[ 68], | 70.00th=[ 80], 80.00th=[ 100], 90.00th=[ 136], 95.00th=[ 182], | 99.00th=[ 284], 99.50th=[ 355], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 24, max= 383, per=25.64%, avg=130.76, stdev=75.57, samples=95 iops : min= 1, max= 23, avg= 7.38, stdev= 4.75, samples=95 lat (msec) : 10=0.65%, 20=9.90%, 50=41.15%, 100=31.51%, 250=15.76% lat (msec) : 500=1.04% cpu : usr=0.04%, sys=1.88%, ctx=1276, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180083: Mon Aug 31 13:26:26 2026 read: IOPS=7, BW=116KiB/s (119kB/s)(5744KiB/49358msec) clat (msec): min=6, max=291, avg=51.16, stdev=46.88 lat (msec): min=6, max=291, avg=51.16, stdev=46.88 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 55], 80.00th=[ 73], 90.00th=[ 121], 95.00th=[ 161], | 99.00th=[ 222], 99.50th=[ 271], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 23, max= 383, per=25.01%, avg=121.30, stdev=78.55, samples=92 iops : min= 1, max= 23, avg= 6.78, stdev= 4.95, samples=92 write: IOPS=8, BW=133KiB/s (136kB/s)(6544KiB/49358msec); 0 zone resets clat (msec): min=12, max=453, avg=74.79, stdev=54.71 lat (msec): min=12, max=453, avg=74.79, stdev=54.71 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 50], 50.00th=[ 58], 60.00th=[ 72], | 70.00th=[ 87], 80.00th=[ 108], 90.00th=[ 140], 95.00th=[ 176], | 99.00th=[ 292], 99.50th=[ 351], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 31, max= 414, per=26.31%, avg=134.16, stdev=82.58, samples=95 iops : min= 1, max= 25, avg= 7.60, stdev= 5.21, samples=95 lat (msec) : 10=1.69%, 20=9.90%, 50=41.67%, 100=28.39%, 250=17.19% lat (msec) : 500=1.17% cpu : usr=0.04%, sys=1.86%, ctx=1215, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180084: Mon Aug 31 13:26:26 2026 read: IOPS=8, BW=128KiB/s (131kB/s)(6256KiB/48864msec) clat (msec): min=7, max=298, avg=51.36, stdev=42.88 lat (msec): min=7, max=298, avg=51.36, stdev=42.88 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 45], | 70.00th=[ 56], 80.00th=[ 70], 90.00th=[ 103], 95.00th=[ 142], | 99.00th=[ 213], 99.50th=[ 288], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 415, per=26.73%, avg=129.62, stdev=89.42, samples=95 iops : min= 1, max= 25, avg= 7.31, stdev= 5.66, samples=95 write: IOPS=7, BW=123KiB/s (126kB/s)(6032KiB/48864msec); 0 zone resets clat (msec): min=15, max=458, avg=76.14, stdev=55.66 lat (msec): min=15, max=458, avg=76.14, stdev=55.66 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 49], 50.00th=[ 58], 60.00th=[ 74], | 70.00th=[ 88], 80.00th=[ 109], 90.00th=[ 148], 95.00th=[ 190], | 99.00th=[ 262], 99.50th=[ 317], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 30, max= 380, per=24.15%, avg=123.19, stdev=70.91, samples=95 iops : min= 1, max= 23, avg= 6.91, stdev= 4.44, samples=95 lat (msec) : 10=0.78%, 20=10.03%, 50=42.19%, 100=30.47%, 250=15.76% lat (msec) : 500=0.78% cpu : usr=0.02%, sys=1.88%, ctx=1295, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180085: Mon Aug 31 13:26:26 2026 read: IOPS=7, BW=122KiB/s (125kB/s)(6032KiB/49248msec) clat (msec): min=7, max=273, avg=51.94, stdev=44.09 lat (msec): min=7, max=273, avg=51.94, stdev=44.09 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 44], | 70.00th=[ 58], 80.00th=[ 79], 90.00th=[ 117], 95.00th=[ 148], | 99.00th=[ 203], 99.50th=[ 266], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 412, per=27.02%, avg=131.07, stdev=76.71, samples=90 iops : min= 1, max= 25, avg= 7.40, stdev= 4.84, samples=90 write: IOPS=7, BW=127KiB/s (130kB/s)(6256KiB/49248msec); 0 zone resets clat (msec): min=12, max=454, avg=75.18, stdev=54.60 lat (msec): min=12, max=454, avg=75.18, stdev=54.60 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 38], | 30.00th=[ 43], 40.00th=[ 50], 50.00th=[ 58], 60.00th=[ 70], | 70.00th=[ 85], 80.00th=[ 105], 90.00th=[ 134], 95.00th=[ 190], | 99.00th=[ 279], 99.50th=[ 338], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 30, max= 447, per=25.42%, avg=129.66, stdev=80.22, samples=95 iops : min= 1, max= 27, avg= 7.32, stdev= 5.02, samples=95 lat (msec) : 10=1.17%, 20=8.98%, 50=43.10%, 100=29.04%, 250=16.67% lat (msec) : 500=1.04% cpu : usr=0.04%, sys=1.88%, ctx=1217, 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=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=485KiB/s (497kB/s), 116KiB/s-128KiB/s (119kB/s-131kB/s), io=23.4MiB (24.5MB), run=48864-49358msec WRITE: bw=511KiB/s (523kB/s), 123KiB/s-133KiB/s (126kB/s-136kB/s), io=24.6MiB (25.8MB), run=48864-49358msec 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=180103: Mon Aug 31 13:26:41 2026 read: IOPS=2, BW=2280KiB/s (2335kB/s)(7168KiB/3144msec) clat (msec): min=4, max=286, avg=210.72, stdev=97.90 lat (msec): min=4, max=286, avg=210.72, stdev=97.90 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 176], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 251], 60.00th=[ 257], | 70.00th=[ 257], 80.00th=[ 275], 90.00th=[ 288], 95.00th=[ 288], | 99.00th=[ 288], 99.50th=[ 288], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 1556, max= 4071, per=71.78%, avg=3154.00, stdev=1388.93, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1628KiB/s (1668kB/s)(5120KiB/3144msec); 0 zone resets clat (msec): min=155, max=428, avg=289.21, stdev=100.48 lat (msec): min=155, max=428, avg=289.33, stdev=100.55 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 300], 60.00th=[ 300], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 1917, max= 3696, per=41.16%, avg=2532.33, stdev=1008.32, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 10=8.33%, 250=41.67%, 500=50.00% cpu : usr=0.06%, sys=13.33%, ctx=139, 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=180104: Mon Aug 31 13:26:41 2026 read: IOPS=0, BW=439KiB/s (450kB/s)(2048KiB/4660msec) clat (usec): min=564, max=361851, avg=181208.28, stdev=255468.53 lat (usec): min=586, max=361854, avg=181220.54, stdev=255455.63 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 562], | 30.00th=[ 562], 40.00th=[ 562], 50.00th=[ 562], 60.00th=[362808], | 70.00th=[362808], 80.00th=[362808], 90.00th=[362808], 95.00th=[362808], | 99.00th=[362808], 99.50th=[362808], 99.90th=[362808], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 1643, max= 1992, per=41.36%, avg=1817.50, stdev=246.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2197KiB/s (2250kB/s)(10.0MiB/4660msec); 0 zone resets clat (msec): min=141, max=687, avg=427.61, stdev=211.51 lat (msec): min=141, max=688, avg=427.83, stdev=211.68 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 165], | 30.00th=[ 241], 40.00th=[ 284], 50.00th=[ 401], 60.00th=[ 468], | 70.00th=[ 600], 80.00th=[ 625], 90.00th=[ 667], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1848, max= 6083, per=41.51%, avg=2553.43, stdev=1557.71, samples=7 iops : min= 1, max= 5, avg= 1.57, stdev= 1.51, samples=7 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=33.33%, 750=33.33% cpu : usr=0.02%, sys=8.97%, ctx=120, 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=180105: Mon Aug 31 13:26:41 2026 read: IOPS=1, BW=1412KiB/s (1446kB/s)(6144KiB/4351msec) clat (usec): min=490, max=450952, avg=192328.04, stdev=186793.23 lat (usec): min=491, max=450954, avg=192329.36, stdev=186793.34 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[101188], 50.00th=[101188], 60.00th=[265290], | 70.00th=[333448], 80.00th=[333448], 90.00th=[450888], 95.00th=[450888], | 99.00th=[450888], 99.50th=[450888], 99.90th=[450888], 99.95th=[450888], | 99.99th=[450888] bw ( KiB/s): min= 1848, max= 6083, per=75.28%, avg=3307.67, stdev=2404.59, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1412KiB/s (1446kB/s)(6144KiB/4351msec); 0 zone resets clat (msec): min=76, max=952, avg=490.88, stdev=351.96 lat (msec): min=76, max=953, avg=491.97, stdev=352.34 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 609], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 1984, max= 4071, per=49.27%, avg=3031.25, stdev=1191.45, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 100=8.33%, 250=16.67%, 500=33.33%, 750=8.33%, 1000=16.67% cpu : usr=0.05%, sys=8.64%, ctx=141, 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=180106: Mon Aug 31 13:26:41 2026 read: IOPS=1, BW=1261KiB/s (1292kB/s)(5120KiB/4059msec) clat (usec): min=384, max=341087, avg=188826.72, stdev=139631.51 lat (usec): min=386, max=341089, avg=188828.20, stdev=139631.41 clat percentiles (usec): | 1.00th=[ 383], 5.00th=[ 383], 10.00th=[ 383], 20.00th=[ 383], | 30.00th=[ 88605], 40.00th=[ 88605], 50.00th=[252707], 60.00th=[252707], | 70.00th=[261096], 80.00th=[261096], 90.00th=[341836], 95.00th=[341836], | 99.00th=[341836], 99.50th=[341836], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 1848, max= 4031, per=59.71%, avg=2623.67, stdev=1220.91, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1766KiB/s (1808kB/s)(7168KiB/4059msec); 0 zone resets clat (msec): min=150, max=687, avg=414.10, stdev=243.56 lat (msec): min=151, max=687, avg=414.18, stdev=243.56 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 220], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 266], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 667], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1917, max= 3696, per=39.27%, avg=2415.75, stdev=855.06, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=25.00% cpu : usr=0.10%, sys=9.44%, ctx=134, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4395KiB/s (4500kB/s), 439KiB/s-2280KiB/s (450kB/s-2335kB/s), io=20.0MiB (20.0MB), run=3144-4660msec WRITE: bw=6153KiB/s (6300kB/s), 1412KiB/s-2197KiB/s (1446kB/s-2250kB/s), io=28.0MiB (29.4MB), run=3144-4660msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180108: Mon Aug 31 13:26:42 2026 read: IOPS=1, BW=1749KiB/s (1791kB/s)(7168KiB/4099msec) clat (msec): min=84, max=1005, avg=408.00, stdev=362.65 lat (msec): min=84, max=1005, avg=408.00, stdev=362.65 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 148], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 201], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 810], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 1996, max= 4079, per=69.90%, avg=3360.67, stdev=1182.38, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1249KiB/s (1279kB/s)(5120KiB/4099msec); 0 zone resets clat (msec): min=96, max=458, avg=246.56, stdev=146.92 lat (msec): min=96, max=458, avg=246.65, stdev=146.91 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 201], 60.00th=[ 201], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 2048, max= 3946, per=44.52%, avg=2997.00, stdev=1342.09, samples=2 iops : min= 2, max= 3, avg= 2.50, stdev= 0.71, samples=2 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.32%, ctx=44, 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=180109: Mon Aug 31 13:26:42 2026 read: IOPS=0, BW=522KiB/s (535kB/s)(2048KiB/3923msec) clat (msec): min=49, max=655, avg=352.58, stdev=428.63 lat (msec): min=49, max=655, avg=352.59, stdev=428.63 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 50], | 30.00th=[ 50], 40.00th=[ 50], 50.00th=[ 50], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1996, max= 2039, per=41.96%, avg=2017.50, stdev=30.41, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2610KiB/s (2673kB/s)(10.0MiB/3923msec); 0 zone resets clat (msec): min=119, max=737, avg=312.26, stdev=208.75 lat (msec): min=119, max=737, avg=312.38, stdev=208.73 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 124], | 30.00th=[ 153], 40.00th=[ 167], 50.00th=[ 205], 60.00th=[ 271], | 70.00th=[ 330], 80.00th=[ 485], 90.00th=[ 531], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1954, max= 4096, per=47.75%, avg=3214.20, stdev=1132.82, samples=5 iops : min= 1, max= 4, avg= 2.40, stdev= 1.34, samples=5 lat (msec) : 50=8.33%, 250=41.67%, 500=25.00%, 750=25.00% cpu : usr=0.03%, sys=4.82%, ctx=67, 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=180110: Mon Aug 31 13:26:42 2026 read: IOPS=1, BW=1615KiB/s (1653kB/s)(6144KiB/3805msec) clat (msec): min=103, max=258, avg=165.29, stdev=56.78 lat (msec): min=103, max=258, avg=165.29, stdev=56.78 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 112], | 30.00th=[ 112], 40.00th=[ 159], 50.00th=[ 159], 60.00th=[ 169], | 70.00th=[ 190], 80.00th=[ 190], 90.00th=[ 259], 95.00th=[ 259], | 99.00th=[ 259], 99.50th=[ 259], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 1973, max= 4096, per=70.35%, avg=3382.67, stdev=1220.84, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1615KiB/s (1653kB/s)(6144KiB/3805msec); 0 zone resets clat (msec): min=125, max=937, avg=466.07, stdev=339.10 lat (msec): min=126, max=937, avg=466.28, stdev=338.95 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 584], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 2003, max= 3992, per=44.49%, avg=2995.00, stdev=1124.93, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 250=66.67%, 500=8.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=4.36%, ctx=69, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180111: Mon Aug 31 13:26:42 2026 read: IOPS=1, BW=1202KiB/s (1231kB/s)(5120KiB/4259msec) clat (msec): min=76, max=602, avg=288.71, stdev=259.73 lat (msec): min=76, max=602, avg=288.71, stdev=259.74 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 78], | 30.00th=[ 90], 40.00th=[ 90], 50.00th=[ 136], 60.00th=[ 136], | 70.00th=[ 542], 80.00th=[ 542], 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= 1954, max= 4079, per=55.50%, avg=2668.67, stdev=1221.42, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1683KiB/s (1723kB/s)(7168KiB/4259msec); 0 zone resets clat (msec): min=110, max=619, avg=356.76, stdev=189.19 lat (msec): min=111, max=619, avg=356.87, stdev=189.15 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 126], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 414], 60.00th=[ 460], | 70.00th=[ 460], 80.00th=[ 477], 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= 1954, max= 6047, per=41.73%, avg=2809.60, stdev=1810.07, samples=5 iops : min= 1, max= 5, avg= 2.00, stdev= 1.73, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=33.33%, 750=25.00% cpu : usr=0.00%, sys=5.61%, ctx=115, 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=4809KiB/s (4924kB/s), 522KiB/s-1749KiB/s (535kB/s-1791kB/s), io=20.0MiB (20.0MB), run=3805-4259msec WRITE: bw=6732KiB/s (6894kB/s), 1249KiB/s-2610KiB/s (1279kB/s-2673kB/s), io=28.0MiB (29.4MB), run=3805-4259msec 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=180119: Mon Aug 31 13:27:01 2026 read: IOPS=0, BW=2278KiB/s (2333kB/s)(12.0MiB/5394msec) clat (msec): min=1046, max=2334, avg=1743.49, stdev=650.44 lat (msec): min=1046, max=2334, avg=1743.49, stdev=650.44 clat percentiles (msec): | 1.00th=[ 1045], 5.00th=[ 1045], 10.00th=[ 1045], 20.00th=[ 1045], | 30.00th=[ 1045], 40.00th=[ 1854], 50.00th=[ 1854], 60.00th=[ 1854], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7742, max= 8143, per=100.00%, avg=7942.50, stdev=283.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.04%, sys=6.27%, ctx=568, 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=180120: Mon Aug 31 13:27:01 2026 read: IOPS=0, BW=767KiB/s (785kB/s)(4096KiB/5340msec) clat (nsec): min=2116.9M, max=2116.9M, avg=2116908499.00, stdev= 0.00 lat (nsec): min=2116.9M, max=2116.9M, avg=2116911449.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2123], 5.00th=[ 2123], 10.00th=[ 2123], 20.00th=[ 2123], | 30.00th=[ 2123], 40.00th=[ 2123], 50.00th=[ 2123], 60.00th=[ 2123], | 70.00th=[ 2123], 80.00th=[ 2123], 90.00th=[ 2123], 95.00th=[ 2123], | 99.00th=[ 2123], 99.50th=[ 2123], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1534KiB/s (1571kB/s)(8192KiB/5340msec); 0 zone resets clat (msec): min=1044, max=2108, avg=1576.73, stdev=752.23 lat (msec): min=1045, max=2108, avg=1577.05, stdev=752.15 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=[ 2106], | 70.00th=[ 2106], 80.00th=[ 2106], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 7742, max= 7742, per=100.00%, avg=7742.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=2.62%, ctx=294, 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=180121: Mon Aug 31 13:27:01 2026 write: IOPS=2, BW=9116KiB/s (9335kB/s)(12.0MiB/1348msec); 0 zone resets clat (msec): min=283, max=717, avg=434.91, stdev=245.21 lat (msec): min=284, max=718, avg=435.29, stdev=245.06 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7984, max= 8047, per=100.00%, avg=8015.50, stdev=44.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.07%, sys=7.87%, ctx=47, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=180122: Mon Aug 31 13:27:01 2026 write: IOPS=0, BW=2200KiB/s (2253kB/s)(12.0MiB/5586msec); 0 zone resets clat (msec): min=393, max=4446, avg=1841.79, stdev=2260.38 lat (msec): min=396, max=4446, avg=1843.24, stdev=2259.53 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 4463], 80.00th=[ 4463], 90.00th=[ 4463], 95.00th=[ 4463], | 99.00th=[ 4463], 99.50th=[ 4463], 99.90th=[ 4463], 99.95th=[ 4463], | 99.99th=[ 4463] bw ( KiB/s): min= 6884, max= 8094, per=100.00%, avg=7489.00, stdev=855.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.22%, ctx=32, 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=3037KiB/s (3110kB/s), 767KiB/s-2278KiB/s (785kB/s-2333kB/s), io=16.0MiB (16.8MB), run=5340-5394msec WRITE: bw=5866KiB/s (6007kB/s), 1534KiB/s-9116KiB/s (1571kB/s-9335kB/s), io=32.0MiB (33.6MB), run=1348-5586msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180123: Mon Aug 31 13:27:03 2026 read: IOPS=0, BW=2045KiB/s (2094kB/s)(12.0MiB/6008msec) clat (msec): min=408, max=4308, avg=1898.43, stdev=2106.55 lat (msec): min=408, max=4308, avg=1898.44, stdev=2106.55 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 70.00th=[ 4329], 80.00th=[ 4329], 90.00th=[ 4329], 95.00th=[ 4329], | 99.00th=[ 4329], 99.50th=[ 4329], 99.90th=[ 4329], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 7474, max= 8000, per=100.00%, avg=7737.00, stdev=371.94, 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=1.32%, ctx=50, 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=180124: Mon Aug 31 13:27:03 2026 read: IOPS=0, BW=669KiB/s (685kB/s)(4096KiB/6124msec) clat (nsec): min=2050.6M, max=2050.6M, avg=2050580898.00, stdev= 0.00 lat (nsec): min=2050.6M, max=2050.6M, avg=2050583624.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2056], 5.00th=[ 2056], 10.00th=[ 2056], 20.00th=[ 2056], | 30.00th=[ 2056], 40.00th=[ 2056], 50.00th=[ 2056], 60.00th=[ 2056], | 70.00th=[ 2056], 80.00th=[ 2056], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7968, max= 7968, per=100.00%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1338KiB/s (1370kB/s)(8192KiB/6124msec); 0 zone resets clat (msec): min=1229, max=2759, avg=1994.18, stdev=1081.64 lat (msec): min=1230, max=2759, avg=1994.98, stdev=1081.36 clat percentiles (msec): | 1.00th=[ 1234], 5.00th=[ 1234], 10.00th=[ 1234], 20.00th=[ 1234], | 30.00th=[ 1234], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 2769], | 70.00th=[ 2769], 80.00th=[ 2769], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 7474, max= 7474, per=100.00%, avg=7474.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.11%, ctx=35, 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=180125: Mon Aug 31 13:27:03 2026 write: IOPS=0, BW=1883KiB/s (1928kB/s)(12.0MiB/6525msec); 0 zone resets clat (msec): min=223, max=5786, avg=2077.73, stdev=3211.84 lat (msec): min=223, max=5786, avg=2078.56, stdev=3211.60 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 224], | 70.00th=[ 5805], 80.00th=[ 5805], 90.00th=[ 5805], 95.00th=[ 5805], | 99.00th=[ 5805], 99.50th=[ 5805], 99.90th=[ 5805], 99.95th=[ 5805], | 99.99th=[ 5805] 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 lat (msec) : 250=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=1.55%, ctx=47, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=180126: Mon Aug 31 13:27:03 2026 write: IOPS=0, BW=2234KiB/s (2287kB/s)(12.0MiB/5501msec); 0 zone resets clat (msec): min=349, max=4358, avg=1707.14, stdev=2296.52 lat (msec): min=349, max=4358, avg=1707.49, stdev=2296.40 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 414], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 4329], 80.00th=[ 4329], 90.00th=[ 4329], 95.00th=[ 4329], | 99.00th=[ 4329], 99.50th=[ 4329], 99.90th=[ 4329], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 8047, max= 8175, per=100.00%, avg=8111.00, stdev=90.51, 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=1.73%, ctx=51, 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=2675KiB/s (2740kB/s), 669KiB/s-2045KiB/s (685kB/s-2094kB/s), io=16.0MiB (16.8MB), run=6008-6124msec WRITE: bw=5022KiB/s (5142kB/s), 1338KiB/s-2234KiB/s (1370kB/s-2287kB/s), io=32.0MiB (33.6MB), run=5501-6525msec