== sanity test 398b: DIO and buffer IO race ============== 06:08:24 (1788516504) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.45718 s, 9.2 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=179395: Fri Sep 4 06:10:56 2026 read: IOPS=11, BW=45.5KiB/s (46.6kB/s)(5992KiB/131800msec) clat (usec): min=35, max=969039, avg=48610.78, stdev=40295.89 lat (usec): min=35, max=969041, avg=48619.19, stdev=40299.88 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 594], 10.00th=[ 16909], 20.00th=[ 23462], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 49021], | 70.00th=[ 58983], 80.00th=[ 69731], 90.00th=[ 86508], 95.00th=[108528], | 99.00th=[160433], 99.50th=[202376], 99.90th=[252707], 99.95th=[968885], | 99.99th=[968885] bw ( KiB/s): min= 7, max= 95, per=25.36%, avg=45.66, stdev=18.19, samples=256 iops : min= 1, max= 23, avg=10.76, stdev= 4.58, samples=256 write: IOPS=11, BW=47.8KiB/s (48.9kB/s)(6296KiB/131800msec); 0 zone resets clat (usec): min=961, max=287137, avg=37198.24, stdev=37851.76 lat (usec): min=961, max=287139, avg=37200.03, stdev=37852.00 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1172], 10.00th=[ 1303], 20.00th=[ 3523], | 30.00th=[ 7832], 40.00th=[ 17695], 50.00th=[ 28705], 60.00th=[ 37487], | 70.00th=[ 48497], 80.00th=[ 64750], 90.00th=[ 89654], 95.00th=[110625], | 99.00th=[156238], 99.50th=[179307], 99.90th=[238027], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 7, max= 111, per=25.18%, avg=47.59, stdev=20.54, samples=258 iops : min= 1, max= 27, avg=11.24, stdev= 5.18, samples=258 lat (usec) : 50=0.26%, 100=1.95%, 250=0.16%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=7.39%, 4=3.61%, 10=6.64%, 20=8.01%, 50=37.83% lat (msec) : 100=27.21%, 250=6.67%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=4.60%, ctx=6442, 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=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=179398: Fri Sep 4 06:10:56 2026 read: IOPS=11, BW=44.7KiB/s (45.8kB/s)(5940KiB/132871msec) clat (usec): min=38, max=228092, avg=48677.44, stdev=32537.52 lat (usec): min=38, max=228093, avg=48678.89, stdev=32537.50 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10945], 10.00th=[ 17171], 20.00th=[ 23725], | 30.00th=[ 29492], 40.00th=[ 35390], 50.00th=[ 41681], 60.00th=[ 49546], | 70.00th=[ 58983], 80.00th=[ 69731], 90.00th=[ 87557], 95.00th=[105382], | 99.00th=[168821], 99.50th=[200279], 99.90th=[227541], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 7, max= 103, per=24.55%, avg=44.20, stdev=17.76, samples=261 iops : min= 1, max= 25, avg=10.38, stdev= 4.49, samples=261 write: IOPS=11, BW=47.8KiB/s (48.9kB/s)(6348KiB/132871msec); 0 zone resets clat (usec): min=972, max=938902, avg=37923.70, stdev=44833.26 lat (usec): min=973, max=938903, avg=37932.03, stdev=44834.49 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1205], 10.00th=[ 1549], 20.00th=[ 3359], | 30.00th=[ 7439], 40.00th=[ 16319], 50.00th=[ 26870], 60.00th=[ 36963], | 70.00th=[ 48497], 80.00th=[ 65274], 90.00th=[ 90702], 95.00th=[116917], | 99.00th=[162530], 99.50th=[187696], 99.90th=[274727], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 7, max= 128, per=25.08%, avg=47.40, stdev=23.02, samples=260 iops : min= 1, max= 32, avg=11.19, stdev= 5.80, samples=260 lat (usec) : 50=0.13%, 100=1.79%, 250=0.10%, 500=0.03%, 1000=0.07% lat (msec) : 2=6.90%, 4=4.65%, 10=5.79%, 20=9.11%, 50=37.70% lat (msec) : 100=26.86%, 250=6.77%, 500=0.07%, 1000=0.03% cpu : usr=0.06%, sys=4.60%, ctx=6426, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179399: Fri Sep 4 06:10:56 2026 read: IOPS=11, BW=46.9KiB/s (48.0kB/s)(6028KiB/128557msec) clat (usec): min=30, max=927025, avg=47794.05, stdev=39207.01 lat (usec): min=31, max=927026, avg=47802.40, stdev=39205.06 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 6456], 10.00th=[ 16450], 20.00th=[ 22938], | 30.00th=[ 28705], 40.00th=[ 33817], 50.00th=[ 40109], 60.00th=[ 46924], | 70.00th=[ 56361], 80.00th=[ 68682], 90.00th=[ 87557], 95.00th=[107480], | 99.00th=[162530], 99.50th=[168821], 99.90th=[242222], 99.95th=[926942], | 99.99th=[926942] bw ( KiB/s): min= 7, max= 111, per=25.98%, avg=46.77, stdev=18.65, samples=251 iops : min= 1, max= 27, avg=11.03, stdev= 4.72, samples=251 write: IOPS=12, BW=48.7KiB/s (49.9kB/s)(6260KiB/128557msec); 0 zone resets clat (usec): min=915, max=276840, avg=35866.06, stdev=38338.04 lat (usec): min=916, max=276842, avg=35868.08, stdev=38338.24 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1450], 20.00th=[ 3458], | 30.00th=[ 7111], 40.00th=[ 14615], 50.00th=[ 24511], 60.00th=[ 33817], | 70.00th=[ 46400], 80.00th=[ 63701], 90.00th=[ 90702], 95.00th=[110625], | 99.00th=[158335], 99.50th=[181404], 99.90th=[261096], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 120, per=25.59%, avg=48.36, stdev=22.11, samples=252 iops : min= 1, max= 30, avg=11.42, stdev= 5.57, samples=252 lat (usec) : 50=0.20%, 100=1.86%, 250=0.16%, 500=0.10%, 1000=0.10% lat (msec) : 2=6.77%, 4=4.30%, 10=6.77%, 20=10.06%, 50=37.76% lat (msec) : 100=24.93%, 250=6.87%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=4.74%, ctx=6317, 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=179400: Fri Sep 4 06:10:56 2026 read: IOPS=11, BW=46.6KiB/s (47.7kB/s)(6052KiB/129877msec) clat (usec): min=37, max=1071.0k, avg=47128.40, stdev=41368.26 lat (usec): min=37, max=1071.0k, avg=47133.56, stdev=41373.64 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 7963], 10.00th=[ 16909], | 20.00th=[ 22676], 30.00th=[ 28181], 40.00th=[ 33162], | 50.00th=[ 39584], 60.00th=[ 46924], 70.00th=[ 54789], | 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[ 103285], | 99.00th=[ 158335], 99.50th=[ 189793], 99.90th=[ 291505], | 99.95th=[1069548], 99.99th=[1069548] bw ( KiB/s): min= 7, max= 104, per=25.67%, avg=46.21, stdev=20.40, samples=255 iops : min= 1, max= 26, avg=10.90, stdev= 5.14, samples=255 write: IOPS=12, BW=48.0KiB/s (49.2kB/s)(6236KiB/129877msec); 0 zone resets clat (usec): min=917, max=296334, avg=37323.94, stdev=39712.05 lat (usec): min=918, max=296336, avg=37329.49, stdev=39710.16 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1467], 20.00th=[ 3294], | 30.00th=[ 7439], 40.00th=[ 16581], 50.00th=[ 26346], 60.00th=[ 35390], | 70.00th=[ 46400], 80.00th=[ 65799], 90.00th=[ 90702], 95.00th=[115868], | 99.00th=[175113], 99.50th=[204473], 99.90th=[246416], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 104, per=25.26%, avg=47.74, stdev=19.85, samples=254 iops : min= 1, max= 26, avg=11.28, stdev= 5.01, samples=254 lat (usec) : 50=0.29%, 100=1.79%, 250=0.13%, 500=0.03%, 1000=0.23% lat (msec) : 2=6.84%, 4=4.43%, 10=5.99%, 20=10.29%, 50=38.15% lat (msec) : 100=25.26%, 250=6.45%, 500=0.10%, 2000=0.03% cpu : usr=0.07%, sys=4.72%, ctx=6286, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=181KiB/s (185kB/s), 44.7KiB/s-46.9KiB/s (45.8kB/s-48.0kB/s), io=23.4MiB (24.6MB), run=128557-132871msec WRITE: bw=189KiB/s (194kB/s), 47.8KiB/s-48.7KiB/s (48.9kB/s-49.9kB/s), io=24.6MiB (25.7MB), run=128557-132871msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179393: Fri Sep 4 06:11:33 2026 read: IOPS=8, BW=35.3KiB/s (36.2kB/s)(5992KiB/169608msec) clat (msec): min=5, max=963, avg=45.56, stdev=49.18 lat (msec): min=5, max=963, avg=45.56, stdev=49.18 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 47], 80.00th=[ 67], 90.00th=[ 109], 95.00th=[ 136], | 99.00th=[ 209], 99.50th=[ 234], 99.90th=[ 313], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 120, per=25.70%, avg=36.24, stdev=25.85, samples=322 iops : min= 1, max= 30, avg= 8.39, stdev= 6.51, samples=322 write: IOPS=9, BW=37.1KiB/s (38.0kB/s)(6296KiB/169608msec); 0 zone resets clat (msec): min=10, max=449, avg=64.16, stdev=48.44 lat (msec): min=10, max=449, avg=64.17, stdev=48.44 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 58], | 70.00th=[ 74], 80.00th=[ 96], 90.00th=[ 129], 95.00th=[ 155], | 99.00th=[ 234], 99.50th=[ 279], 99.90th=[ 347], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 7, max= 125, per=24.91%, avg=36.87, stdev=24.76, samples=332 iops : min= 1, max= 31, avg= 8.56, stdev= 6.22, samples=332 lat (msec) : 10=2.80%, 20=15.04%, 50=44.76%, 100=22.20%, 250=14.62% lat (msec) : 500=0.55%, 1000=0.03% cpu : usr=0.05%, sys=1.60%, ctx=4712, 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=179394: Fri Sep 4 06:11:33 2026 read: IOPS=8, BW=35.1KiB/s (35.9kB/s)(5940KiB/169300msec) clat (msec): min=5, max=1101, avg=45.45, stdev=51.18 lat (msec): min=5, max=1101, avg=45.45, stdev=51.18 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 67], 90.00th=[ 105], 95.00th=[ 138], | 99.00th=[ 220], 99.50th=[ 232], 99.90th=[ 334], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 141, per=25.59%, avg=36.08, stdev=27.45, samples=320 iops : min= 1, max= 35, avg= 8.36, stdev= 6.89, samples=320 write: IOPS=9, BW=37.5KiB/s (38.4kB/s)(6348KiB/169300msec); 0 zone resets clat (msec): min=9, max=344, avg=63.90, stdev=47.48 lat (msec): min=9, max=344, avg=63.90, stdev=47.48 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 59], | 70.00th=[ 75], 80.00th=[ 96], 90.00th=[ 127], 95.00th=[ 155], | 99.00th=[ 234], 99.50th=[ 292], 99.90th=[ 326], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 111, per=25.37%, avg=37.55, stdev=24.79, samples=328 iops : min= 1, max= 27, avg= 8.73, stdev= 6.24, samples=328 lat (msec) : 10=2.77%, 20=14.88%, 50=45.25%, 100=22.40%, 250=14.10% lat (msec) : 500=0.59%, 2000=0.03% cpu : usr=0.05%, sys=1.54%, ctx=4660, 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=179396: Fri Sep 4 06:11:33 2026 read: IOPS=8, BW=35.9KiB/s (36.7kB/s)(6028KiB/168028msec) clat (msec): min=4, max=294, avg=43.79, stdev=41.06 lat (msec): min=4, max=294, avg=43.79, stdev=41.06 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 63], 90.00th=[ 100], 95.00th=[ 136], | 99.00th=[ 194], 99.50th=[ 224], 99.90th=[ 288], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 135, per=25.63%, avg=36.13, stdev=25.90, samples=323 iops : min= 1, max= 33, avg= 8.37, stdev= 6.50, samples=323 write: IOPS=9, BW=37.3KiB/s (38.1kB/s)(6260KiB/168028msec); 0 zone resets clat (msec): min=9, max=1128, avg=64.96, stdev=54.49 lat (msec): min=9, max=1128, avg=64.96, stdev=54.49 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 48], 60.00th=[ 58], | 70.00th=[ 75], 80.00th=[ 97], 90.00th=[ 131], 95.00th=[ 163], | 99.00th=[ 228], 99.50th=[ 262], 99.90th=[ 326], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 120, per=25.13%, avg=37.19, stdev=24.73, samples=326 iops : min= 1, max= 30, avg= 8.63, stdev= 6.21, samples=326 lat (msec) : 10=2.64%, 20=14.71%, 50=45.44%, 100=22.92%, 250=13.80% lat (msec) : 500=0.46%, 2000=0.03% cpu : usr=0.05%, sys=1.56%, ctx=4673, 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=179397: Fri Sep 4 06:11:33 2026 read: IOPS=8, BW=35.7KiB/s (36.6kB/s)(6052KiB/169529msec) clat (msec): min=4, max=316, avg=43.95, stdev=42.26 lat (msec): min=4, max=316, avg=43.95, stdev=42.26 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 64], 90.00th=[ 103], 95.00th=[ 136], | 99.00th=[ 203], 99.50th=[ 220], 99.90th=[ 305], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 7, max= 133, per=25.95%, avg=36.58, stdev=26.33, samples=320 iops : min= 1, max= 33, avg= 8.49, stdev= 6.62, samples=320 write: IOPS=9, BW=36.8KiB/s (37.7kB/s)(6236KiB/169529msec); 0 zone resets clat (msec): min=9, max=1167, avg=65.86, stdev=56.08 lat (msec): min=9, max=1167, avg=65.86, stdev=56.08 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 77], 80.00th=[ 99], 90.00th=[ 132], 95.00th=[ 161], | 99.00th=[ 239], 99.50th=[ 284], 99.90th=[ 422], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 134, per=24.84%, avg=36.77, stdev=24.57, samples=328 iops : min= 1, max= 33, avg= 8.53, stdev= 6.17, samples=328 lat (msec) : 10=2.41%, 20=16.70%, 50=43.33%, 100=22.62%, 250=14.32% lat (msec) : 500=0.59%, 2000=0.03% cpu : usr=0.06%, sys=1.61%, ctx=4655, 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=142KiB/s (145kB/s), 35.1KiB/s-35.9KiB/s (35.9kB/s-36.7kB/s), io=23.4MiB (24.6MB), run=168028-169608msec WRITE: bw=148KiB/s (152kB/s), 36.8KiB/s-37.5KiB/s (37.7kB/s-38.4kB/s), io=24.6MiB (25.7MB), run=168028-169608msec 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=179440: Fri Sep 4 06:12:15 2026 read: IOPS=11, BW=189KiB/s (194kB/s)(5920KiB/31241msec) clat (usec): min=49, max=214848, avg=44422.79, stdev=27920.98 lat (usec): min=51, max=214850, avg=44424.00, stdev=27920.99 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 82], 10.00th=[ 16581], 20.00th=[ 23462], | 30.00th=[ 30540], 40.00th=[ 35390], 50.00th=[ 40633], 60.00th=[ 45876], | 70.00th=[ 52691], 80.00th=[ 61604], 90.00th=[ 76022], 95.00th=[ 99091], | 99.00th=[124257], 99.50th=[193987], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 31, max= 440, per=24.52%, avg=187.85, stdev=73.03, samples=61 iops : min= 1, max= 27, avg=10.97, stdev= 4.62, samples=61 write: IOPS=12, BW=204KiB/s (209kB/s)(6368KiB/31241msec); 0 zone resets clat (usec): min=1385, max=244241, avg=37021.94, stdev=35557.08 lat (usec): min=1387, max=244243, avg=37025.37, stdev=35556.77 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1975], 10.00th=[ 2900], 20.00th=[ 5604], | 30.00th=[ 8979], 40.00th=[ 17433], 50.00th=[ 27657], 60.00th=[ 36439], | 70.00th=[ 47973], 80.00th=[ 64750], 90.00th=[ 88605], 95.00th=[106431], | 99.00th=[137364], 99.50th=[164627], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 30, max= 440, per=25.21%, avg=203.16, stdev=78.09, samples=61 iops : min= 1, max= 27, avg=11.93, stdev= 4.97, samples=61 lat (usec) : 50=0.13%, 100=2.34%, 250=0.52%, 500=0.26%, 1000=0.26% lat (msec) : 2=2.73%, 4=4.95%, 10=8.85%, 20=8.85%, 50=39.06% lat (msec) : 100=26.17%, 250=5.86% cpu : usr=0.07%, sys=5.01%, ctx=1662, 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=179441: Fri Sep 4 06:12:15 2026 read: IOPS=11, BW=184KiB/s (188kB/s)(5744KiB/31256msec) clat (usec): min=44, max=205332, avg=46449.78, stdev=31770.30 lat (usec): min=45, max=205334, avg=46450.97, stdev=31770.27 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 63], 10.00th=[ 14877], 20.00th=[ 23200], | 30.00th=[ 30278], 40.00th=[ 35914], 50.00th=[ 42206], 60.00th=[ 50594], | 70.00th=[ 56361], 80.00th=[ 65799], 90.00th=[ 83362], 95.00th=[ 94897], | 99.00th=[183501], 99.50th=[193987], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 31, max= 319, per=23.76%, avg=181.98, stdev=71.35, samples=61 iops : min= 1, max= 19, avg=10.61, stdev= 4.50, samples=61 write: IOPS=13, BW=209KiB/s (214kB/s)(6544KiB/31256msec); 0 zone resets clat (usec): min=1474, max=280406, avg=35305.89, stdev=37939.79 lat (usec): min=1475, max=280408, avg=35307.79, stdev=37939.80 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1860], 10.00th=[ 2999], 20.00th=[ 5669], | 30.00th=[ 8848], 40.00th=[ 16581], 50.00th=[ 24249], 60.00th=[ 31851], | 70.00th=[ 43254], 80.00th=[ 60031], 90.00th=[ 81265], 95.00th=[104334], | 99.00th=[170918], 99.50th=[212861], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 31, max= 472, per=25.72%, avg=207.31, stdev=80.75, samples=61 iops : min= 1, max= 29, avg=12.21, stdev= 5.11, samples=61 lat (usec) : 50=0.26%, 100=3.52%, 250=0.65% lat (msec) : 2=2.99%, 4=3.52%, 10=10.81%, 20=8.98%, 50=37.24% lat (msec) : 100=27.21%, 250=4.69%, 500=0.13% cpu : usr=0.07%, sys=5.11%, ctx=1668, 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=179442: Fri Sep 4 06:12:15 2026 read: IOPS=12, BW=204KiB/s (209kB/s)(6256KiB/30677msec) clat (usec): min=39, max=240662, avg=42883.74, stdev=31675.91 lat (usec): min=39, max=240663, avg=42885.12, stdev=31675.79 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 59], 10.00th=[ 70], 20.00th=[ 19792], | 30.00th=[ 28181], 40.00th=[ 33162], 50.00th=[ 39060], 60.00th=[ 46400], | 70.00th=[ 54789], 80.00th=[ 65799], 90.00th=[ 78119], 95.00th=[ 92799], | 99.00th=[170918], 99.50th=[189793], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 384, per=26.76%, avg=205.00, stdev=77.38, samples=60 iops : min= 1, max= 24, avg=12.05, stdev= 4.90, samples=60 write: IOPS=12, BW=197KiB/s (201kB/s)(6032KiB/30677msec); 0 zone resets clat (usec): min=1423, max=181913, avg=36544.96, stdev=37323.98 lat (usec): min=1425, max=181916, avg=36549.64, stdev=37324.42 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1762], 10.00th=[ 2409], 20.00th=[ 4113], | 30.00th=[ 8455], 40.00th=[ 15008], 50.00th=[ 24249], 60.00th=[ 35914], | 70.00th=[ 46924], 80.00th=[ 66847], 90.00th=[ 91751], 95.00th=[106431], | 99.00th=[158335], 99.50th=[177210], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 63, max= 564, per=24.11%, avg=194.37, stdev=86.36, samples=60 iops : min= 3, max= 35, avg=11.38, stdev= 5.48, samples=60 lat (usec) : 50=0.78%, 100=5.86%, 250=0.52%, 750=0.13%, 1000=0.13% lat (msec) : 2=3.91%, 4=5.73%, 10=7.03%, 20=8.46%, 50=36.07% lat (msec) : 100=26.30%, 250=5.08% cpu : usr=0.07%, sys=5.25%, ctx=1597, 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=179443: Fri Sep 4 06:12:15 2026 read: IOPS=12, BW=200KiB/s (205kB/s)(6032KiB/30175msec) clat (usec): min=41, max=146438, avg=44251.67, stdev=29545.09 lat (usec): min=42, max=146440, avg=44252.77, stdev=29545.13 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 60], 10.00th=[ 83], 20.00th=[ 20579], | 30.00th=[ 28705], 40.00th=[ 34866], 50.00th=[ 40633], 60.00th=[ 49021], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 83362], 95.00th=[ 98042], | 99.00th=[128451], 99.50th=[145753], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 31, max= 351, per=25.99%, avg=199.12, stdev=68.31, samples=59 iops : min= 1, max= 21, avg=11.69, stdev= 4.32, samples=59 write: IOPS=12, BW=207KiB/s (212kB/s)(6256KiB/30175msec); 0 zone resets clat (usec): min=1292, max=213970, avg=34145.79, stdev=34161.84 lat (usec): min=1293, max=213971, avg=34154.72, stdev=34158.04 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1778], 10.00th=[ 2376], 20.00th=[ 4555], | 30.00th=[ 7701], 40.00th=[ 14353], 50.00th=[ 23462], 60.00th=[ 35914], | 70.00th=[ 46924], 80.00th=[ 61080], 90.00th=[ 81265], 95.00th=[ 96994], | 99.00th=[152044], 99.50th=[210764], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 64, max= 381, per=25.79%, avg=207.88, stdev=70.23, samples=59 iops : min= 4, max= 23, avg=12.25, stdev= 4.38, samples=59 lat (usec) : 50=0.52%, 100=4.82%, 250=0.39%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=4.30%, 4=4.30%, 10=9.77%, 20=8.85%, 50=34.51% lat (msec) : 100=27.73%, 250=4.43% cpu : usr=0.07%, sys=5.24%, ctx=1673, 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=766KiB/s (785kB/s), 184KiB/s-204KiB/s (188kB/s-209kB/s), io=23.4MiB (24.5MB), run=30175-31256msec WRITE: bw=806KiB/s (826kB/s), 197KiB/s-209KiB/s (201kB/s-214kB/s), io=24.6MiB (25.8MB), run=30175-31256msec fio: pid=179446, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=179445: Fri Sep 4 06:12:28 2026 read: IOPS=8, BW=133KiB/s (136kB/s)(5920KiB/44492msec) clat (msec): min=7, max=275, avg=46.79, stdev=37.01 lat (msec): min=7, max=275, avg=46.79, stdev=37.01 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 51], 80.00th=[ 65], 90.00th=[ 91], 95.00th=[ 121], | 99.00th=[ 188], 99.50th=[ 255], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 414, per=24.96%, avg=129.29, stdev=69.02, samples=87 iops : min= 1, max= 25, avg= 7.24, stdev= 4.31, samples=87 write: IOPS=8, BW=143KiB/s (147kB/s)(6368KiB/44492msec); 0 zone resets clat (msec): min=13, max=228, avg=68.11, stdev=42.23 lat (msec): min=13, max=228, avg=68.11, stdev=42.23 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 55], 60.00th=[ 64], | 70.00th=[ 77], 80.00th=[ 102], 90.00th=[ 131], 95.00th=[ 159], | 99.00th=[ 205], 99.50th=[ 224], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 31, max= 287, per=25.84%, avg=140.32, stdev=67.44, samples=87 iops : min= 1, max= 17, avg= 7.92, stdev= 4.22, samples=87 lat (msec) : 10=0.65%, 20=9.38%, 50=46.22%, 100=29.43%, 250=14.06% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=1.70%, ctx=1216, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=179446: Fri Sep 4 06:12:28 2026 read: IOPS=7, BW=121KiB/s (124kB/s)(4864KiB/40231msec) clat (msec): min=7, max=261, avg=49.67, stdev=36.69 lat (msec): min=7, max=261, avg=49.67, stdev=36.70 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 48], | 70.00th=[ 59], 80.00th=[ 70], 90.00th=[ 105], 95.00th=[ 127], | 99.00th=[ 163], 99.50th=[ 184], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 350, per=24.17%, avg=125.18, stdev=74.10, samples=76 iops : min= 1, max= 21, avg= 6.99, stdev= 4.63, samples=76 write: IOPS=8, BW=137KiB/s (140kB/s)(5504KiB/40231msec); 0 zone resets clat (msec): min=18, max=267, avg=72.77, stdev=40.99 lat (msec): min=18, max=267, avg=72.77, stdev=41.00 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 27], 10.00th=[ 32], 20.00th=[ 39], | 30.00th=[ 46], 40.00th=[ 53], 50.00th=[ 63], 60.00th=[ 75], | 70.00th=[ 89], 80.00th=[ 105], 90.00th=[ 126], 95.00th=[ 155], | 99.00th=[ 205], 99.50th=[ 232], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 31, max= 316, per=25.43%, avg=138.06, stdev=66.25, samples=78 iops : min= 1, max= 19, avg= 7.81, stdev= 4.17, samples=78 lat (msec) : 10=0.77%, 20=7.24%, 50=40.22%, 100=34.36%, 250=16.95% lat (msec) : 500=0.31% cpu : usr=0.05%, sys=1.50%, ctx=964, majf=0, minf=19 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=305,344,0,0 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=179447: Fri Sep 4 06:12:28 2026 read: IOPS=8, BW=142KiB/s (145kB/s)(6256KiB/44094msec) clat (msec): min=7, max=278, avg=47.15, stdev=38.82 lat (msec): min=7, max=278, avg=47.15, stdev=38.82 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 51], 80.00th=[ 66], 90.00th=[ 95], 95.00th=[ 132], | 99.00th=[ 194], 99.50th=[ 215], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 538, per=27.34%, avg=141.63, stdev=87.63, samples=87 iops : min= 1, max= 33, avg= 8.02, stdev= 5.50, samples=87 write: IOPS=8, BW=137KiB/s (140kB/s)(6032KiB/44094msec); 0 zone resets clat (msec): min=16, max=258, avg=67.88, stdev=40.85 lat (msec): min=16, max=258, avg=67.89, stdev=40.84 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 46], 50.00th=[ 57], 60.00th=[ 67], | 70.00th=[ 79], 80.00th=[ 100], 90.00th=[ 125], 95.00th=[ 150], | 99.00th=[ 203], 99.50th=[ 243], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 31, max= 318, per=25.28%, avg=137.26, stdev=63.28, samples=86 iops : min= 1, max= 19, avg= 7.73, stdev= 3.96, samples=86 lat (msec) : 10=0.39%, 20=10.42%, 50=46.09%, 100=28.78%, 250=14.06% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=1.61%, ctx=1248, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179448: Fri Sep 4 06:12:28 2026 read: IOPS=8, BW=137KiB/s (140kB/s)(6032KiB/44095msec) clat (msec): min=7, max=270, avg=49.99, stdev=37.43 lat (msec): min=7, max=270, avg=49.99, stdev=37.43 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 47], | 70.00th=[ 59], 80.00th=[ 69], 90.00th=[ 101], 95.00th=[ 129], | 99.00th=[ 182], 99.50th=[ 199], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 347, per=27.12%, avg=140.48, stdev=69.34, samples=84 iops : min= 1, max= 21, avg= 7.94, stdev= 4.36, samples=84 write: IOPS=8, BW=142KiB/s (145kB/s)(6256KiB/44095msec); 0 zone resets clat (msec): min=15, max=245, avg=64.35, stdev=39.23 lat (msec): min=15, max=245, avg=64.36, stdev=39.23 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 62], | 70.00th=[ 74], 80.00th=[ 88], 90.00th=[ 115], 95.00th=[ 140], | 99.00th=[ 205], 99.50th=[ 241], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 31, max= 383, per=26.73%, avg=145.14, stdev=71.37, samples=85 iops : min= 1, max= 23, avg= 8.24, stdev= 4.46, samples=85 lat (msec) : 10=1.43%, 20=7.03%, 50=46.61%, 100=32.42%, 250=12.37% lat (msec) : 500=0.13% cpu : usr=0.04%, sys=1.56%, ctx=1159, 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=519KiB/s (531kB/s), 121KiB/s-142KiB/s (124kB/s-145kB/s), io=22.5MiB (23.6MB), run=40231-44492msec WRITE: bw=543KiB/s (556kB/s), 137KiB/s-143KiB/s (140kB/s-147kB/s), io=23.6MiB (24.7MB), run=40231-44492msec 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=179462: Fri Sep 4 06:12:45 2026 read: IOPS=1, BW=1229KiB/s (1259kB/s)(7168KiB/5832msec) clat (usec): min=483, max=312119, avg=176289.54, stdev=133938.00 lat (usec): min=484, max=312121, avg=176290.88, stdev=133938.01 clat percentiles (usec): | 1.00th=[ 482], 5.00th=[ 482], 10.00th=[ 482], 20.00th=[ 510], | 30.00th=[141558], 40.00th=[141558], 50.00th=[210764], 60.00th=[256902], | 70.00th=[256902], 80.00th=[312476], 90.00th=[312476], 95.00th=[312476], | 99.00th=[312476], 99.50th=[312476], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 1479, max= 4087, per=98.11%, avg=2896.25, stdev=1335.59, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=878KiB/s (899kB/s)(5120KiB/5832msec); 0 zone resets clat (msec): min=181, max=2569, avg=880.27, stdev=963.40 lat (msec): min=183, max=2569, avg=880.63, stdev=963.14 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 2567], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 1932, max= 4015, per=64.03%, avg=2646.33, stdev=1185.68, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=25.00%, 500=33.33%, 750=16.67%, >=2000=8.33% cpu : usr=0.05%, sys=7.31%, ctx=160, 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=179463: Fri Sep 4 06:12:45 2026 read: IOPS=0, BW=295KiB/s (302kB/s)(2048KiB/6936msec) clat (msec): min=121, max=2734, avg=1428.05, stdev=1847.81 lat (msec): min=121, max=2734, avg=1428.05, stdev=1847.81 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 122], | 30.00th=[ 122], 40.00th=[ 122], 50.00th=[ 122], 60.00th=[ 2735], | 70.00th=[ 2735], 80.00th=[ 2735], 90.00th=[ 2735], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 2007, max= 2027, per=68.33%, avg=2017.00, stdev=14.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1476KiB/s (1512kB/s)(10.0MiB/6936msec); 0 zone resets clat (msec): min=111, max=948, avg=401.06, stdev=275.52 lat (msec): min=111, max=948, avg=401.13, stdev=275.52 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 165], | 30.00th=[ 228], 40.00th=[ 232], 50.00th=[ 334], 60.00th=[ 342], | 70.00th=[ 368], 80.00th=[ 468], 90.00th=[ 818], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 1910, max= 6047, per=72.61%, avg=3001.00, stdev=1709.03, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 250=41.67%, 500=33.33%, 1000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=8.85%, ctx=536, 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=179464: Fri Sep 4 06:12:45 2026 read: IOPS=1, BW=1035KiB/s (1059kB/s)(6144KiB/5939msec) clat (usec): min=506, max=2147.1k, avg=544337.47, stdev=796754.70 lat (usec): min=507, max=2147.1k, avg=544338.94, stdev=796754.59 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], | 20.00th=[ 158335], 30.00th=[ 158335], 40.00th=[ 242222], | 50.00th=[ 242222], 60.00th=[ 350225], 70.00th=[ 367002], | 80.00th=[ 367002], 90.00th=[2139096], 95.00th=[2139096], | 99.00th=[2139096], 99.50th=[2139096], 99.90th=[2139096], | 99.95th=[2139096], 99.99th=[2139096] bw ( KiB/s): min= 1932, max= 3984, per=84.16%, avg=2484.50, stdev=1000.37, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1035KiB/s (1059kB/s)(6144KiB/5939msec); 0 zone resets clat (msec): min=247, max=653, avg=433.51, stdev=177.34 lat (msec): min=247, max=653, avg=433.60, stdev=177.33 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 550], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1932, max= 2888, per=52.81%, avg=2182.60, stdev=396.78, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=33.33%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=6.50%, ctx=204, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179465: Fri Sep 4 06:12:45 2026 read: IOPS=0, BW=916KiB/s (938kB/s)(5120KiB/5590msec) clat (usec): min=507, max=300380, avg=106170.64, stdev=145684.63 lat (usec): min=510, max=300382, avg=106172.12, stdev=145684.54 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 529], 40.00th=[ 529], 50.00th=[ 3589], 60.00th=[ 3589], | 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= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1282KiB/s (1313kB/s)(7168KiB/5590msec); 0 zone resets clat (msec): min=119, max=2853, avg=638.63, stdev=990.88 lat (msec): min=119, max=2853, avg=638.70, stdev=990.89 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 140], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 230], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 575], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 1932, max= 3984, per=60.11%, avg=2484.50, stdev=1000.37, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=16.67% lat (msec) : 4=8.33%, 250=41.67%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.04%, sys=8.41%, ctx=137, 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=2953KiB/s (3024kB/s), 295KiB/s-1229KiB/s (302kB/s-1259kB/s), io=20.0MiB (20.0MB), run=5590-6936msec WRITE: bw=4134KiB/s (4233kB/s), 878KiB/s-1476KiB/s (899kB/s-1512kB/s), io=28.0MiB (29.4MB), run=5590-6936msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179466: Fri Sep 4 06:12:46 2026 read: IOPS=1, BW=1106KiB/s (1133kB/s)(7168KiB/6480msec) clat (msec): min=66, max=684, avg=246.18, stdev=208.57 lat (msec): min=66, max=684, avg=246.18, stdev=208.57 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 75], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 197], 60.00th=[ 249], | 70.00th=[ 249], 80.00th=[ 271], 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= 1605, max= 4087, per=100.00%, avg=2923.00, stdev=1284.64, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=790KiB/s (809kB/s)(5120KiB/6480msec); 0 zone resets clat (msec): min=176, max=2880, avg=919.11, stdev=1110.89 lat (msec): min=176, max=2880, avg=919.52, stdev=1110.72 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 1988, max= 2043, per=54.52%, avg=2024.25, stdev=25.10, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.02%, sys=3.26%, ctx=108, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179467: Fri Sep 4 06:12:46 2026 read: IOPS=0, BW=277KiB/s (284kB/s)(2048KiB/7388msec) clat (msec): min=132, max=3035, avg=1584.38, stdev=2052.75 lat (msec): min=132, max=3035, avg=1584.38, stdev=2052.75 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 133], 60.00th=[ 3037], | 70.00th=[ 3037], 80.00th=[ 3037], 90.00th=[ 3037], 95.00th=[ 3037], | 99.00th=[ 3037], 99.50th=[ 3037], 99.90th=[ 3037], 99.95th=[ 3037], | 99.99th=[ 3037] bw ( KiB/s): min= 1980, max= 2019, per=75.40%, avg=1999.50, stdev=27.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1386KiB/s (1419kB/s)(10.0MiB/7388msec); 0 zone resets clat (msec): min=80, max=866, avg=414.97, stdev=283.43 lat (msec): min=80, max=868, avg=415.31, stdev=283.79 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 136], | 30.00th=[ 165], 40.00th=[ 300], 50.00th=[ 305], 60.00th=[ 334], | 70.00th=[ 477], 80.00th=[ 684], 90.00th=[ 810], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 1950, max= 6059, per=72.03%, avg=2674.50, stdev=1658.40, samples=6 iops : min= 1, max= 5, avg= 1.67, stdev= 1.63, samples=6 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=8.33%, 1000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.04%, sys=3.42%, ctx=85, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179468: Fri Sep 4 06:12:46 2026 read: IOPS=0, BW=899KiB/s (921kB/s)(6144KiB/6832msec) clat (msec): min=78, max=542, avg=310.02, stdev=173.17 lat (msec): min=78, max=542, avg=310.02, stdev=173.17 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 338], | 70.00th=[ 447], 80.00th=[ 447], 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= 2019, max= 4079, per=100.00%, avg=3353.00, stdev=1156.78, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=899KiB/s (921kB/s)(6144KiB/6832msec); 0 zone resets clat (msec): min=193, max=2686, avg=742.05, stdev=964.55 lat (msec): min=194, max=2686, avg=742.13, stdev=964.56 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 401], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 2702], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 2019, max= 4071, per=68.41%, avg=2540.00, stdev=1020.72, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=16.67%, 500=50.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.25%, ctx=92, 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=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=179469: Fri Sep 4 06:12:46 2026 read: IOPS=0, BW=663KiB/s (679kB/s)(5120KiB/7720msec) clat (msec): min=104, max=358, avg=189.45, stdev=103.66 lat (msec): min=104, max=358, avg=189.45, stdev=103.66 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 105], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 153], 60.00th=[ 153], | 70.00th=[ 215], 80.00th=[ 215], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 3900, max= 4039, per=100.00%, avg=3969.50, stdev=98.29, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=928KiB/s (951kB/s)(7168KiB/7720msec); 0 zone resets clat (msec): min=57, max=4019, avg=896.49, stdev=1397.83 lat (msec): min=57, max=4019, avg=896.67, stdev=1397.81 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 186], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 464], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 701], 90.00th=[ 4010], 95.00th=[ 4010], | 99.00th=[ 4010], 99.50th=[ 4010], 99.90th=[ 4010], 99.95th=[ 4010], | 99.99th=[ 4010] bw ( KiB/s): min= 1980, max= 2043, per=54.07%, avg=2007.50, stdev=29.03, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.03%, sys=2.60%, ctx=114, 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=2653KiB/s (2717kB/s), 277KiB/s-1106KiB/s (284kB/s-1133kB/s), io=20.0MiB (20.0MB), run=6480-7720msec WRITE: bw=3714KiB/s (3803kB/s), 790KiB/s-1386KiB/s (809kB/s-1419kB/s), io=28.0MiB (29.4MB), run=6480-7720msec 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=179476: Fri Sep 4 06:13:05 2026 read: IOPS=0, BW=3210KiB/s (3287kB/s)(12.0MiB/3828msec) clat (msec): min=856, max=1938, avg=1230.82, stdev=613.45 lat (msec): min=856, max=1938, avg=1230.82, stdev=613.45 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 1938], 80.00th=[ 1938], 90.00th=[ 1938], 95.00th=[ 1938], | 99.00th=[ 1938], 99.50th=[ 1938], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=2.40%, ctx=54, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179477: Fri Sep 4 06:13:05 2026 read: IOPS=0, BW=1650KiB/s (1689kB/s)(4096KiB/2483msec) clat (nsec): min=535476k, max=535476k, avg=535475840.00, stdev= 0.00 lat (nsec): min=535478k, max=535478k, avg=535478359.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 535], | 30.00th=[ 535], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 535], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 535], 95.00th=[ 535], | 99.00th=[ 535], 99.50th=[ 535], 99.90th=[ 535], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 6068, max= 6068, per=100.00%, avg=6068.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3299KiB/s (3378kB/s)(8192KiB/2483msec); 0 zone resets clat (msec): min=591, max=1274, avg=932.70, stdev=483.00 lat (msec): min=593, max=1274, avg=934.02, stdev=481.59 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 1267], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.16%, sys=5.36%, ctx=42, 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=179478: Fri Sep 4 06:13:05 2026 write: IOPS=0, BW=2616KiB/s (2678kB/s)(12.0MiB/4698msec); 0 zone resets clat (msec): min=299, max=3695, avg=1480.90, stdev=1919.10 lat (msec): min=299, max=3696, avg=1482.16, stdev=1919.21 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 3708], 80.00th=[ 3708], 90.00th=[ 3708], 95.00th=[ 3708], | 99.00th=[ 3708], 99.50th=[ 3708], 99.90th=[ 3708], 99.95th=[ 3708], | 99.99th=[ 3708] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.79%, ctx=64, 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=179479: Fri Sep 4 06:13:05 2026 write: IOPS=0, BW=3566KiB/s (3651kB/s)(12.0MiB/3446msec); 0 zone resets clat (msec): min=241, max=2547, avg=1059.39, stdev=1290.74 lat (msec): min=241, max=2547, avg=1059.72, stdev=1290.77 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 2534], 80.00th=[ 2534], 90.00th=[ 2534], 95.00th=[ 2534], | 99.00th=[ 2534], 99.50th=[ 2534], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min=16031, max=16031, per=100.00%, avg=16031.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.58%, ctx=53, 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=4280KiB/s (4383kB/s), 1650KiB/s-3210KiB/s (1689kB/s-3287kB/s), io=16.0MiB (16.8MB), run=2483-3828msec WRITE: bw=6975KiB/s (7142kB/s), 2616KiB/s-3566KiB/s (2678kB/s-3651kB/s), io=32.0MiB (33.6MB), run=2483-4698msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179481: Fri Sep 4 06:13:06 2026 read: IOPS=0, BW=4005KiB/s (4101kB/s)(12.0MiB/3068msec) clat (msec): min=810, max=1167, avg=956.23, stdev=187.10 lat (msec): min=810, max=1167, avg=956.23, stdev=187.10 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 894], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8000, max= 8159, per=100.00%, avg=8079.50, stdev=112.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=12.29%, ctx=508, 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=179482: Fri Sep 4 06:13:06 2026 read: IOPS=0, BW=1233KiB/s (1263kB/s)(4096KiB/3322msec) clat (nsec): min=1377.0M, max=1377.0M, avg=1377040978.00, stdev= 0.00 lat (nsec): min=1377.0M, max=1377.0M, avg=1377043791.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1385], 5.00th=[ 1385], 10.00th=[ 1385], 20.00th=[ 1385], | 30.00th=[ 1385], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2466KiB/s (2525kB/s)(8192KiB/3322msec); 0 zone resets clat (msec): min=595, max=1237, avg=916.92, stdev=453.99 lat (msec): min=596, max=1238, avg=917.33, stdev=453.95 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=[ 1234], | 70.00th=[ 1234], 80.00th=[ 1234], 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= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.09%, sys=5.54%, ctx=137, 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=179483: Fri Sep 4 06:13:06 2026 write: IOPS=0, BW=2793KiB/s (2860kB/s)(12.0MiB/4400msec); 0 zone resets clat (msec): min=203, max=3624, avg=1401.13, stdev=1927.20 lat (msec): min=203, max=3624, avg=1402.66, stdev=1926.20 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 3641], 80.00th=[ 3641], 90.00th=[ 3641], 95.00th=[ 3641], | 99.00th=[ 3641], 99.50th=[ 3641], 99.90th=[ 3641], 99.95th=[ 3641], | 99.99th=[ 3641] bw ( KiB/s): min=16253, max=16253, per=100.00%, avg=16253.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.14%, ctx=49, 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=179484: Fri Sep 4 06:13:06 2026 write: IOPS=0, BW=3030KiB/s (3103kB/s)(12.0MiB/4055msec); 0 zone resets clat (msec): min=989, max=1818, avg=1328.11, stdev=434.64 lat (msec): min=990, max=1818, avg=1329.36, stdev=434.28 clat percentiles (msec): | 1.00th=[ 995], 5.00th=[ 995], 10.00th=[ 995], 20.00th=[ 995], | 30.00th=[ 995], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1821], 80.00th=[ 1821], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7529, max= 7846, per=100.00%, avg=7687.50, stdev=224.15, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.50%, 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=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=4932KiB/s (5050kB/s), 1233KiB/s-4005KiB/s (1263kB/s-4101kB/s), io=16.0MiB (16.8MB), run=3068-3322msec WRITE: bw=7447KiB/s (7626kB/s), 2466KiB/s-3030KiB/s (2525kB/s-3103kB/s), io=32.0MiB (33.6MB), run=3322-4400msec