== sanity test 398b: DIO and buffer IO race ============== 13:34:29 (1786815269) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.31265 s, 8.0 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=179133: Sat Aug 15 13:37:05 2026 read: IOPS=11, BW=44.0KiB/s (45.1kB/s)(5992KiB/136043msec) clat (usec): min=41, max=563189, avg=50256.41, stdev=34885.83 lat (usec): min=42, max=563191, avg=50262.17, stdev=34886.49 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11338], 10.00th=[ 17171], 20.00th=[ 25297], | 30.00th=[ 30540], 40.00th=[ 36963], 50.00th=[ 43254], 60.00th=[ 51119], | 70.00th=[ 60556], 80.00th=[ 71828], 90.00th=[ 88605], 95.00th=[108528], | 99.00th=[164627], 99.50th=[189793], 99.90th=[233833], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 7, max= 95, per=24.91%, avg=43.83, stdev=16.88, samples=266 iops : min= 1, max= 23, avg=10.29, stdev= 4.23, samples=266 write: IOPS=11, BW=46.3KiB/s (47.4kB/s)(6296KiB/136043msec); 0 zone resets clat (usec): min=1001, max=265722, avg=38454.54, stdev=37133.95 lat (usec): min=1002, max=265723, avg=38470.84, stdev=37125.00 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1467], 10.00th=[ 2442], 20.00th=[ 5276], | 30.00th=[ 9896], 40.00th=[ 20055], 50.00th=[ 29230], 60.00th=[ 39060], | 70.00th=[ 51119], 80.00th=[ 64750], 90.00th=[ 88605], 95.00th=[110625], | 99.00th=[152044], 99.50th=[179307], 99.90th=[227541], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 7, max= 127, per=25.23%, avg=46.42, stdev=21.64, samples=264 iops : min= 1, max= 31, avg=10.95, stdev= 5.45, samples=264 lat (usec) : 50=0.26%, 100=1.40%, 250=0.16%, 500=0.03%, 1000=0.03% lat (msec) : 2=4.10%, 4=4.36%, 10=7.32%, 20=9.11%, 50=36.75% lat (msec) : 100=29.75%, 250=6.64%, 500=0.03%, 750=0.03% cpu : usr=0.07%, sys=4.59%, ctx=6778, 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=179134: Sat Aug 15 13:37:05 2026 read: IOPS=11, BW=44.2KiB/s (45.2kB/s)(5940KiB/134446msec) clat (usec): min=41, max=651422, avg=50244.91, stdev=36459.93 lat (usec): min=42, max=651424, avg=50253.22, stdev=36458.25 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 12256], 10.00th=[ 18482], 20.00th=[ 25560], | 30.00th=[ 31327], 40.00th=[ 36963], 50.00th=[ 43254], 60.00th=[ 49021], | 70.00th=[ 57410], 80.00th=[ 70779], 90.00th=[ 90702], 95.00th=[108528], | 99.00th=[168821], 99.50th=[214959], 99.90th=[287310], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 7, max= 103, per=24.86%, avg=43.76, stdev=17.36, samples=264 iops : min= 1, max= 25, avg=10.27, stdev= 4.36, samples=264 write: IOPS=11, BW=47.2KiB/s (48.3kB/s)(6348KiB/134446msec); 0 zone resets clat (usec): min=1105, max=284931, avg=37601.74, stdev=38709.01 lat (usec): min=1107, max=284932, avg=37605.23, stdev=38714.85 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1450], 10.00th=[ 2212], 20.00th=[ 4621], | 30.00th=[ 8586], 40.00th=[ 16450], 50.00th=[ 25822], 60.00th=[ 36439], | 70.00th=[ 48497], 80.00th=[ 65799], 90.00th=[ 89654], 95.00th=[112722], | 99.00th=[166724], 99.50th=[193987], 99.90th=[263193], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 135, per=25.57%, avg=47.05, stdev=21.14, samples=262 iops : min= 1, max= 33, avg=11.10, stdev= 5.33, samples=262 lat (usec) : 50=0.07%, 100=1.63%, 250=0.10%, 500=0.03%, 750=0.03% lat (msec) : 2=4.49%, 4=4.39%, 10=7.85%, 20=9.64%, 50=37.83% lat (msec) : 100=26.99%, 250=6.74%, 500=0.20%, 750=0.03% cpu : usr=0.07%, sys=4.47%, ctx=6556, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179135: Sat Aug 15 13:37:05 2026 read: IOPS=11, BW=45.0KiB/s (46.1kB/s)(6028KiB/133927msec) clat (usec): min=33, max=237725, avg=48818.09, stdev=31233.91 lat (usec): min=33, max=237726, avg=48820.36, stdev=31233.55 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 12780], 10.00th=[ 17695], 20.00th=[ 24773], | 30.00th=[ 30540], 40.00th=[ 35914], 50.00th=[ 42206], 60.00th=[ 49546], | 70.00th=[ 57934], 80.00th=[ 69731], 90.00th=[ 89654], 95.00th=[108528], | 99.00th=[164627], 99.50th=[181404], 99.90th=[214959], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 7, max= 103, per=25.38%, avg=44.67, stdev=19.48, samples=263 iops : min= 1, max= 25, avg=10.50, stdev= 4.91, samples=263 write: IOPS=11, BW=46.7KiB/s (47.9kB/s)(6260KiB/133927msec); 0 zone resets clat (usec): min=1179, max=696799, avg=38478.01, stdev=43259.04 lat (usec): min=1181, max=696802, avg=38479.80, stdev=43259.14 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1418], 10.00th=[ 2089], 20.00th=[ 4490], | 30.00th=[ 8356], 40.00th=[ 17433], 50.00th=[ 26608], 60.00th=[ 36963], | 70.00th=[ 48497], 80.00th=[ 66323], 90.00th=[ 91751], 95.00th=[112722], | 99.00th=[181404], 99.50th=[210764], 99.90th=[325059], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 7, max= 111, per=25.18%, avg=46.33, stdev=20.11, samples=263 iops : min= 1, max= 27, avg=10.93, stdev= 5.07, samples=263 lat (usec) : 50=0.10%, 100=1.79%, 250=0.07%, 500=0.03% lat (msec) : 2=4.79%, 4=4.43%, 10=7.52%, 20=9.47%, 50=37.37% lat (msec) : 100=27.28%, 250=7.03%, 500=0.10%, 750=0.03% cpu : usr=0.07%, sys=4.60%, ctx=6510, 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=179136: Sat Aug 15 13:37:05 2026 read: IOPS=11, BW=45.1KiB/s (46.2kB/s)(6052KiB/134045msec) clat (usec): min=34, max=325102, avg=49369.30, stdev=33635.86 lat (usec): min=34, max=325103, avg=49381.21, stdev=33639.57 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11338], 10.00th=[ 17957], 20.00th=[ 24511], | 30.00th=[ 30016], 40.00th=[ 36439], 50.00th=[ 42730], 60.00th=[ 50070], | 70.00th=[ 58459], 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[112722], | 99.00th=[160433], 99.50th=[202376], 99.90th=[299893], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 7, max= 119, per=25.44%, avg=44.77, stdev=17.73, samples=263 iops : min= 1, max= 29, avg=10.52, stdev= 4.47, samples=263 write: IOPS=11, BW=46.5KiB/s (47.6kB/s)(6236KiB/134045msec); 0 zone resets clat (usec): min=1121, max=690037, avg=37918.14, stdev=40908.19 lat (usec): min=1121, max=690040, avg=37925.71, stdev=40910.88 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1483], 10.00th=[ 2343], 20.00th=[ 4883], | 30.00th=[ 9372], 40.00th=[ 18220], 50.00th=[ 26870], 60.00th=[ 36963], | 70.00th=[ 49546], 80.00th=[ 64750], 90.00th=[ 88605], 95.00th=[113771], | 99.00th=[164627], 99.50th=[191890], 99.90th=[246416], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 7, max= 135, per=25.14%, avg=46.26, stdev=20.51, samples=262 iops : min= 1, max= 33, avg=10.90, stdev= 5.16, samples=262 lat (usec) : 50=0.23%, 100=1.66%, 250=0.16%, 500=0.03%, 750=0.03% lat (msec) : 2=4.33%, 4=4.79%, 10=6.93%, 20=9.02%, 50=37.73% lat (msec) : 100=28.09%, 250=6.87%, 500=0.10%, 750=0.03% cpu : usr=0.07%, sys=4.56%, ctx=6606, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=177KiB/s (181kB/s), 44.0KiB/s-45.1KiB/s (45.1kB/s-46.2kB/s), io=23.4MiB (24.6MB), run=133927-136043msec WRITE: bw=185KiB/s (189kB/s), 46.3KiB/s-47.2KiB/s (47.4kB/s-48.3kB/s), io=24.6MiB (25.7MB), run=133927-136043msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179128: Sat Aug 15 13:38:01 2026 read: IOPS=7, BW=31.2KiB/s (31.0kB/s)(5992KiB/191893msec) clat (msec): min=7, max=918, avg=52.06, stdev=48.12 lat (msec): min=7, max=918, avg=52.06, stdev=48.12 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 37], 60.00th=[ 44], | 70.00th=[ 54], 80.00th=[ 72], 90.00th=[ 110], 95.00th=[ 144], | 99.00th=[ 213], 99.50th=[ 234], 99.90th=[ 351], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 118, per=25.32%, avg=31.40, stdev=19.30, samples=369 iops : min= 1, max= 29, avg= 7.16, stdev= 4.86, samples=369 write: IOPS=8, BW=32.8KiB/s (33.6kB/s)(6296KiB/191893msec); 0 zone resets clat (msec): min=10, max=376, avg=72.06, stdev=46.64 lat (msec): min=10, max=376, avg=72.06, stdev=46.64 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 43], 40.00th=[ 50], 50.00th=[ 58], 60.00th=[ 70], | 70.00th=[ 84], 80.00th=[ 104], 90.00th=[ 133], 95.00th=[ 165], | 99.00th=[ 241], 99.50th=[ 271], 99.90th=[ 342], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 88, per=25.25%, avg=32.82, stdev=17.88, samples=371 iops : min= 1, max= 22, avg= 7.52, stdev= 4.52, samples=371 lat (msec) : 10=0.59%, 20=8.37%, 50=44.53%, 100=29.49%, 250=16.44% lat (msec) : 500=0.55%, 1000=0.03% cpu : usr=0.06%, sys=1.86%, ctx=5011, 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=179129: Sat Aug 15 13:38:01 2026 read: IOPS=7, BW=30.0KiB/s (31.7kB/s)(5940KiB/191775msec) clat (msec): min=6, max=990, avg=51.86, stdev=49.05 lat (msec): min=6, max=990, avg=51.86, stdev=49.05 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 38], 60.00th=[ 45], | 70.00th=[ 55], 80.00th=[ 73], 90.00th=[ 110], 95.00th=[ 144], | 99.00th=[ 215], 99.50th=[ 239], 99.90th=[ 313], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 111, per=25.59%, avg=31.73, stdev=19.54, samples=362 iops : min= 1, max= 27, avg= 7.25, stdev= 4.92, samples=362 write: IOPS=8, BW=33.1KiB/s (33.9kB/s)(6348KiB/191775msec); 0 zone resets clat (msec): min=14, max=354, avg=72.00, stdev=46.85 lat (msec): min=14, max=354, avg=72.00, stdev=46.85 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 43], 40.00th=[ 50], 50.00th=[ 59], 60.00th=[ 70], | 70.00th=[ 85], 80.00th=[ 104], 90.00th=[ 134], 95.00th=[ 169], | 99.00th=[ 232], 99.50th=[ 292], 99.90th=[ 330], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 7, max= 86, per=25.44%, avg=33.08, stdev=16.94, samples=372 iops : min= 1, max= 21, avg= 7.58, stdev= 4.27, samples=372 lat (msec) : 10=0.65%, 20=9.02%, 50=43.16%, 100=30.18%, 250=16.47% lat (msec) : 500=0.49%, 1000=0.03% cpu : usr=0.05%, sys=1.92%, ctx=4980, 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=179130: Sat Aug 15 13:38:01 2026 read: IOPS=7, BW=31.5KiB/s (32.2kB/s)(6028KiB/191554msec) clat (msec): min=5, max=318, avg=52.24, stdev=43.24 lat (msec): min=5, max=318, avg=52.24, stdev=43.24 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 47], | 70.00th=[ 57], 80.00th=[ 73], 90.00th=[ 105], 95.00th=[ 148], | 99.00th=[ 224], 99.50th=[ 243], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 7, max= 111, per=25.49%, avg=31.61, stdev=18.21, samples=368 iops : min= 1, max= 27, avg= 7.22, stdev= 4.60, samples=368 write: IOPS=8, BW=32.7KiB/s (33.5kB/s)(6260KiB/191554msec); 0 zone resets clat (msec): min=13, max=1017, avg=71.77, stdev=52.16 lat (msec): min=13, max=1017, avg=71.77, stdev=52.16 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 49], 50.00th=[ 58], 60.00th=[ 69], | 70.00th=[ 83], 80.00th=[ 103], 90.00th=[ 138], 95.00th=[ 161], | 99.00th=[ 234], 99.50th=[ 271], 99.90th=[ 380], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 104, per=25.11%, avg=32.65, stdev=17.64, samples=370 iops : min= 1, max= 26, avg= 7.48, stdev= 4.45, samples=370 lat (msec) : 10=0.59%, 20=8.33%, 50=43.82%, 100=31.18%, 250=15.53% lat (msec) : 500=0.52%, 2000=0.03% cpu : usr=0.04%, sys=1.81%, ctx=5021, 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=179131: Sat Aug 15 13:38:01 2026 read: IOPS=7, BW=31.4KiB/s (32.2kB/s)(6052KiB/192600msec) clat (msec): min=6, max=290, avg=52.47, stdev=44.97 lat (msec): min=6, max=290, avg=52.47, stdev=44.97 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 57], 80.00th=[ 75], 90.00th=[ 111], 95.00th=[ 146], | 99.00th=[ 226], 99.50th=[ 262], 99.90th=[ 288], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 119, per=26.06%, avg=32.31, stdev=20.10, samples=363 iops : min= 1, max= 29, avg= 7.39, stdev= 5.05, samples=363 write: IOPS=8, BW=32.4KiB/s (33.2kB/s)(6236KiB/192600msec); 0 zone resets clat (msec): min=11, max=1035, avg=72.30, stdev=54.06 lat (msec): min=11, max=1035, avg=72.31, stdev=54.06 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 58], 60.00th=[ 68], | 70.00th=[ 83], 80.00th=[ 103], 90.00th=[ 138], 95.00th=[ 174], | 99.00th=[ 253], 99.50th=[ 284], 99.90th=[ 347], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 95, per=24.93%, avg=32.41, stdev=18.16, samples=373 iops : min= 1, max= 23, avg= 7.41, stdev= 4.57, samples=373 lat (msec) : 10=0.94%, 20=9.28%, 50=42.90%, 100=30.40%, 250=15.59% lat (msec) : 500=0.85%, 2000=0.03% cpu : usr=0.04%, sys=1.83%, ctx=5072, 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=125KiB/s (128kB/s), 30.0KiB/s-31.5KiB/s (31.7kB/s-32.2kB/s), io=23.4MiB (24.6MB), run=191554-192600msec WRITE: bw=131KiB/s (134kB/s), 32.4KiB/s-33.1KiB/s (33.2kB/s-33.9kB/s), io=24.6MiB (25.7MB), run=191554-192600msec 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=179185: Sat Aug 15 13:38:49 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(5920KiB/34437msec) clat (usec): min=39, max=218476, avg=47844.57, stdev=32504.49 lat (usec): min=39, max=218477, avg=47845.82, stdev=32504.54 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 67], 10.00th=[ 10814], 20.00th=[ 23987], | 30.00th=[ 31851], 40.00th=[ 37487], 50.00th=[ 44303], 60.00th=[ 48497], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[111674], | 99.00th=[164627], 99.50th=[193987], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 62, max= 288, per=24.64%, avg=168.57, stdev=56.78, samples=67 iops : min= 3, max= 18, avg= 9.75, stdev= 3.61, samples=67 write: IOPS=11, BW=185KiB/s (189kB/s)(6368KiB/34437msec); 0 zone resets clat (usec): min=1601, max=175951, avg=41971.19, stdev=37975.16 lat (usec): min=1602, max=175953, avg=41973.33, stdev=37975.10 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2278], 10.00th=[ 3720], 20.00th=[ 6521], | 30.00th=[ 12125], 40.00th=[ 21103], 50.00th=[ 33817], 60.00th=[ 43779], | 70.00th=[ 57410], 80.00th=[ 71828], 90.00th=[ 95945], 95.00th=[116917], | 99.00th=[166724], 99.50th=[173016], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 30, max= 348, per=25.49%, avg=183.51, stdev=70.22, samples=67 iops : min= 1, max= 21, avg=10.69, stdev= 4.41, samples=67 lat (usec) : 50=0.26%, 100=3.39%, 250=0.52%, 500=0.13%, 750=0.13% lat (msec) : 2=1.82%, 4=5.08%, 10=7.16%, 20=7.68%, 50=38.02% lat (msec) : 100=28.65%, 250=7.16% cpu : usr=0.06%, sys=5.20%, ctx=1720, 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=179186: Sat Aug 15 13:38:49 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(5744KiB/34695msec) clat (usec): min=50, max=285347, avg=53090.65, stdev=35221.79 lat (usec): min=50, max=285348, avg=53103.79, stdev=35216.73 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 82], 10.00th=[ 21103], 20.00th=[ 29492], | 30.00th=[ 34866], 40.00th=[ 39060], 50.00th=[ 44827], 60.00th=[ 54264], | 70.00th=[ 62129], 80.00th=[ 72877], 90.00th=[ 93848], 95.00th=[119014], | 99.00th=[166724], 99.50th=[217056], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 31, max= 382, per=24.34%, avg=166.46, stdev=62.02, samples=68 iops : min= 1, max= 23, avg= 9.60, stdev= 3.94, samples=68 write: IOPS=11, BW=189KiB/s (193kB/s)(6544KiB/34695msec); 0 zone resets clat (usec): min=1813, max=173983, avg=38069.33, stdev=33783.95 lat (usec): min=1814, max=173995, avg=38074.30, stdev=33784.23 clat percentiles (usec): | 1.00th=[ 1975], 5.00th=[ 2966], 10.00th=[ 4146], 20.00th=[ 7767], | 30.00th=[ 13304], 40.00th=[ 23725], 50.00th=[ 30278], 60.00th=[ 38536], | 70.00th=[ 47449], 80.00th=[ 61080], 90.00th=[ 84411], 95.00th=[101188], | 99.00th=[156238], 99.50th=[164627], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 63, max= 433, per=26.07%, avg=187.74, stdev=78.35, samples=68 iops : min= 3, max= 27, avg=10.94, stdev= 4.99, samples=68 lat (usec) : 100=2.60%, 250=0.39%, 500=0.13% lat (msec) : 2=0.78%, 4=4.17%, 10=8.07%, 20=7.42%, 50=40.36% lat (msec) : 100=29.43%, 250=6.51%, 500=0.13% cpu : usr=0.06%, sys=5.31%, ctx=1774, 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=179187: Sat Aug 15 13:38:49 2026 read: IOPS=11, BW=179KiB/s (183kB/s)(6256KiB/34970msec) clat (usec): min=45, max=218412, avg=51597.55, stdev=37001.78 lat (usec): min=46, max=218414, avg=51605.44, stdev=37006.49 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 73], 10.00th=[ 14877], 20.00th=[ 24773], | 30.00th=[ 31327], 40.00th=[ 39060], 50.00th=[ 45351], 60.00th=[ 52691], | 70.00th=[ 61080], 80.00th=[ 74974], 90.00th=[ 95945], 95.00th=[113771], | 99.00th=[193987], 99.50th=[212861], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 62, max= 352, per=26.02%, avg=177.96, stdev=63.97, samples=68 iops : min= 3, max= 22, avg=10.34, stdev= 4.10, samples=68 write: IOPS=10, BW=172KiB/s (177kB/s)(6032KiB/34970msec); 0 zone resets clat (usec): min=1670, max=203459, avg=39135.32, stdev=36637.26 lat (usec): min=1672, max=203460, avg=39137.83, stdev=36637.06 clat percentiles (usec): | 1.00th=[ 1975], 5.00th=[ 2835], 10.00th=[ 4359], 20.00th=[ 8225], | 30.00th=[ 13042], 40.00th=[ 20579], 50.00th=[ 29754], 60.00th=[ 35914], | 70.00th=[ 46924], 80.00th=[ 65274], 90.00th=[ 92799], 95.00th=[120062], | 99.00th=[158335], 99.50th=[164627], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 31, max= 351, per=23.38%, avg=168.35, stdev=76.39, samples=68 iops : min= 1, max= 21, avg= 9.72, stdev= 4.78, samples=68 lat (usec) : 50=0.26%, 100=3.12%, 250=0.65%, 500=0.26%, 750=0.13% lat (msec) : 2=0.65%, 4=3.91%, 10=7.68%, 20=9.90%, 50=37.76% lat (msec) : 100=27.34%, 250=8.33% cpu : usr=0.07%, sys=4.99%, ctx=1771, 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=179188: Sat Aug 15 13:38:49 2026 read: IOPS=11, BW=181KiB/s (186kB/s)(6032KiB/33236msec) clat (usec): min=48, max=171149, avg=47711.58, stdev=31352.13 lat (usec): min=49, max=171150, avg=47712.97, stdev=31352.38 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 62], 10.00th=[ 293], 20.00th=[ 26084], | 30.00th=[ 31589], 40.00th=[ 36439], 50.00th=[ 43254], 60.00th=[ 50070], | 70.00th=[ 58459], 80.00th=[ 68682], 90.00th=[ 85459], 95.00th=[107480], | 99.00th=[149947], 99.50th=[168821], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 63, max= 349, per=26.90%, avg=183.97, stdev=59.20, samples=64 iops : min= 3, max= 21, avg=10.72, stdev= 3.79, samples=64 write: IOPS=11, BW=188KiB/s (193kB/s)(6256KiB/33236msec); 0 zone resets clat (usec): min=1827, max=171662, avg=38824.41, stdev=36654.06 lat (usec): min=1829, max=171665, avg=38873.77, stdev=36621.32 clat percentiles (usec): | 1.00th=[ 1958], 5.00th=[ 2737], 10.00th=[ 4113], 20.00th=[ 7504], | 30.00th=[ 11863], 40.00th=[ 19792], 50.00th=[ 26608], 60.00th=[ 37487], | 70.00th=[ 50070], 80.00th=[ 67634], 90.00th=[ 91751], 95.00th=[108528], | 99.00th=[156238], 99.50th=[168821], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 31, max= 447, per=26.28%, avg=189.25, stdev=75.14, samples=65 iops : min= 1, max= 27, avg=11.05, stdev= 4.73, samples=65 lat (usec) : 50=0.13%, 100=4.17%, 250=0.52%, 500=0.26% lat (msec) : 2=0.78%, 4=4.56%, 10=8.46%, 20=8.20%, 50=38.02% lat (msec) : 100=27.99%, 250=6.90% cpu : usr=0.07%, sys=5.19%, ctx=1725, 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=685KiB/s (701kB/s), 166KiB/s-181KiB/s (170kB/s-186kB/s), io=23.4MiB (24.5MB), run=33236-34970msec WRITE: bw=721KiB/s (738kB/s), 172KiB/s-189KiB/s (177kB/s-193kB/s), io=24.6MiB (25.8MB), run=33236-34970msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179180: Sat Aug 15 13:38:57 2026 read: IOPS=8, BW=134KiB/s (137kB/s)(5920KiB/44272msec) clat (msec): min=5, max=262, avg=47.12, stdev=41.49 lat (msec): min=5, max=262, avg=47.12, stdev=41.49 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 33], 60.00th=[ 38], | 70.00th=[ 52], 80.00th=[ 69], 90.00th=[ 103], 95.00th=[ 142], | 99.00th=[ 205], 99.50th=[ 220], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 31, max= 446, per=24.62%, avg=132.48, stdev=88.07, samples=86 iops : min= 1, max= 27, avg= 7.44, stdev= 5.54, samples=86 write: IOPS=8, BW=144KiB/s (147kB/s)(6368KiB/44272msec); 0 zone resets clat (msec): min=14, max=322, avg=66.80, stdev=47.28 lat (msec): min=14, max=322, avg=66.80, stdev=47.28 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 64], | 70.00th=[ 80], 80.00th=[ 99], 90.00th=[ 133], 95.00th=[ 174], | 99.00th=[ 220], 99.50th=[ 284], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 31, max= 415, per=25.05%, avg=141.78, stdev=87.78, samples=87 iops : min= 1, max= 25, avg= 8.03, stdev= 5.51, samples=87 lat (msec) : 10=0.91%, 20=13.28%, 50=45.44%, 100=25.52%, 250=14.45% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=2.16%, ctx=1259, 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=179181: Sat Aug 15 13:38:57 2026 read: IOPS=8, BW=129KiB/s (132kB/s)(5744KiB/44461msec) clat (msec): min=8, max=238, avg=46.76, stdev=40.81 lat (msec): min=8, max=238, avg=46.76, stdev=40.81 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 65], 90.00th=[ 115], 95.00th=[ 142], | 99.00th=[ 192], 99.50th=[ 220], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 31, max= 477, per=24.17%, avg=130.02, stdev=96.27, samples=85 iops : min= 1, max= 29, avg= 7.28, stdev= 6.03, samples=85 write: IOPS=9, BW=147KiB/s (151kB/s)(6544KiB/44461msec); 0 zone resets clat (msec): min=12, max=427, avg=67.49, stdev=50.84 lat (msec): min=12, max=427, avg=67.49, stdev=50.84 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 63], | 70.00th=[ 81], 80.00th=[ 105], 90.00th=[ 140], 95.00th=[ 165], | 99.00th=[ 226], 99.50th=[ 255], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 31, max= 479, per=25.13%, avg=142.22, stdev=95.38, samples=87 iops : min= 1, max= 29, avg= 8.06, stdev= 6.00, samples=87 lat (msec) : 10=1.43%, 20=14.32%, 50=44.14%, 100=23.44%, 250=16.28% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.90%, ctx=1261, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179182: Sat Aug 15 13:38:57 2026 read: IOPS=8, BW=142KiB/s (146kB/s)(6256KiB/43979msec) clat (msec): min=6, max=232, avg=48.73, stdev=41.97 lat (msec): min=6, max=232, avg=48.74, stdev=41.97 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 54], 80.00th=[ 71], 90.00th=[ 111], 95.00th=[ 140], | 99.00th=[ 199], 99.50th=[ 230], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 31, max= 503, per=26.44%, avg=142.25, stdev=99.57, samples=85 iops : min= 1, max= 31, avg= 8.06, stdev= 6.27, samples=85 write: IOPS=8, BW=137KiB/s (140kB/s)(6032KiB/43979msec); 0 zone resets clat (msec): min=14, max=436, avg=65.53, stdev=46.65 lat (msec): min=14, max=436, avg=65.54, stdev=46.65 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 50], 60.00th=[ 66], | 70.00th=[ 79], 80.00th=[ 97], 90.00th=[ 120], 95.00th=[ 153], | 99.00th=[ 234], 99.50th=[ 317], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 31, max= 351, per=24.16%, avg=136.73, stdev=84.20, samples=84 iops : min= 1, max= 21, avg= 7.71, stdev= 5.27, samples=84 lat (msec) : 10=0.78%, 20=12.24%, 50=46.35%, 100=26.30%, 250=14.06% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=2.03%, ctx=1255, 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=179183: Sat Aug 15 13:38:57 2026 read: IOPS=8, BW=138KiB/s (141kB/s)(6032KiB/43855msec) clat (msec): min=7, max=242, avg=47.59, stdev=44.12 lat (msec): min=7, max=242, avg=47.59, stdev=44.12 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 70], 90.00th=[ 107], 95.00th=[ 146], | 99.00th=[ 218], 99.50th=[ 226], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 31, max= 479, per=25.17%, avg=135.43, stdev=98.95, samples=86 iops : min= 1, max= 29, avg= 7.63, stdev= 6.22, samples=86 write: IOPS=8, BW=143KiB/s (146kB/s)(6256KiB/43855msec); 0 zone resets clat (msec): min=12, max=300, avg=65.79, stdev=45.98 lat (msec): min=12, max=300, avg=65.80, stdev=45.98 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 43], 50.00th=[ 51], 60.00th=[ 61], | 70.00th=[ 78], 80.00th=[ 97], 90.00th=[ 130], 95.00th=[ 155], | 99.00th=[ 222], 99.50th=[ 268], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 381, per=25.17%, avg=142.47, stdev=90.49, samples=85 iops : min= 1, max= 23, avg= 8.08, stdev= 5.70, samples=85 lat (msec) : 10=0.52%, 20=15.63%, 50=43.88%, 100=24.35%, 250=15.36% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=2.02%, ctx=1196, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=539KiB/s (552kB/s), 129KiB/s-142KiB/s (132kB/s-146kB/s), io=23.4MiB (24.5MB), run=43855-44461msec WRITE: bw=567KiB/s (580kB/s), 137KiB/s-147KiB/s (140kB/s-151kB/s), io=24.6MiB (25.8MB), run=43855-44461msec 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=179201: Sat Aug 15 13:39:14 2026 read: IOPS=1, BW=1366KiB/s (1399kB/s)(7168KiB/5247msec) clat (usec): min=556, max=2694.9k, avg=475522.32, stdev=981862.36 lat (usec): min=557, max=2694.9k, avg=475523.77, stdev=981862.42 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], | 20.00th=[ 775], 30.00th=[ 117965], 40.00th=[ 117965], | 50.00th=[ 143655], 60.00th=[ 160433], 70.00th=[ 160433], | 80.00th=[ 210764], 90.00th=[2701132], 95.00th=[2701132], | 99.00th=[2701132], 99.50th=[2701132], 99.90th=[2701132], | 99.95th=[2701132], 99.99th=[2701132] bw ( KiB/s): min= 1553, max= 4063, per=83.53%, avg=2927.75, stdev=1317.25, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 write: IOPS=0, BW=976KiB/s (999kB/s)(5120KiB/5247msec); 0 zone resets clat (msec): min=136, max=784, avg=362.03, stdev=256.44 lat (msec): min=138, max=785, avg=362.64, stdev=255.88 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 264], 60.00th=[ 264], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1976, max= 2048, per=41.14%, avg=2018.50, stdev=30.73, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=50.00%, 500=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.98%, ctx=560, 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=179203: Sat Aug 15 13:39:14 2026 read: IOPS=0, BW=351KiB/s (359kB/s)(2048KiB/5842msec) clat (usec): min=1241, max=243745, avg=122493.58, stdev=171476.01 lat (usec): min=1242, max=243747, avg=122495.44, stdev=171476.94 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1237], 10.00th=[ 1237], 20.00th=[ 1237], | 30.00th=[ 1237], 40.00th=[ 1237], 50.00th=[ 1237], 60.00th=[244319], | 70.00th=[244319], 80.00th=[244319], 90.00th=[244319], 95.00th=[244319], | 99.00th=[244319], 99.50th=[244319], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 1546, max= 2048, per=51.27%, avg=1797.00, stdev=354.97, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1753KiB/s (1795kB/s)(10.0MiB/5842msec); 0 zone resets clat (msec): min=42, max=2831, avg=521.69, stdev=860.05 lat (msec): min=42, max=2831, avg=521.78, stdev=860.04 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 43], 10.00th=[ 43], 20.00th=[ 51], | 30.00th=[ 94], 40.00th=[ 107], 50.00th=[ 142], 60.00th=[ 247], | 70.00th=[ 305], 80.00th=[ 397], 90.00th=[ 1003], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 2048, max= 8126, per=92.67%, avg=4547.50, stdev=2558.73, samples=4 iops : min= 2, max= 7, avg= 3.75, stdev= 2.22, samples=4 lat (msec) : 2=8.33%, 50=8.33%, 100=16.67%, 250=33.33%, 500=16.67% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.62%, ctx=97, 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=179204: Sat Aug 15 13:39:14 2026 read: IOPS=1, BW=1278KiB/s (1308kB/s)(6144KiB/4809msec) clat (usec): min=515, max=213039, avg=94263.44, stdev=97461.80 lat (usec): min=517, max=213041, avg=94264.70, stdev=97461.67 clat percentiles (usec): | 1.00th=[ 515], 5.00th=[ 515], 10.00th=[ 515], 20.00th=[ 519], | 30.00th=[ 519], 40.00th=[ 35390], 50.00th=[ 35390], 60.00th=[111674], | 70.00th=[204473], 80.00th=[204473], 90.00th=[212861], 95.00th=[212861], | 99.00th=[212861], 99.50th=[212861], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 2019, max= 5930, per=94.91%, avg=3326.67, stdev=2254.56, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1278KiB/s (1308kB/s)(6144KiB/4809msec); 0 zone resets clat (msec): min=57, max=2805, avg=699.12, stdev=1041.65 lat (msec): min=57, max=2805, avg=699.23, stdev=1041.65 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 266], 50.00th=[ 266], 60.00th=[ 351], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 2802], 95.00th=[ 2802], | 99.00th=[ 2802], 99.50th=[ 2802], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 2031, max= 3953, per=60.93%, avg=2989.67, stdev=961.01, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=16.67% lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=8.38%, ctx=119, 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=179205: Sat Aug 15 13:39:14 2026 read: IOPS=0, BW=974KiB/s (998kB/s)(5120KiB/5254msec) clat (usec): min=548, max=234418, avg=85830.02, stdev=116430.58 lat (usec): min=549, max=234420, avg=85831.20, stdev=116430.33 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 545], | 30.00th=[ 1500], 40.00th=[ 1500], 50.00th=[ 2704], 60.00th=[ 2704], | 70.00th=[189793], 80.00th=[189793], 90.00th=[233833], 95.00th=[233833], | 99.00th=[233833], 99.50th=[233833], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1364KiB/s (1397kB/s)(7168KiB/5254msec); 0 zone resets clat (msec): min=153, max=2988, avg=636.22, stdev=1039.59 lat (msec): min=153, max=2988, avg=636.33, stdev=1039.59 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 209], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 215], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 363], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 2019, max= 4096, per=61.73%, avg=3029.00, stdev=1151.05, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.29, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 4=8.33%, 250=50.00%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=7.88%, ctx=114, 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=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=3506KiB/s (3590kB/s), 351KiB/s-1366KiB/s (359kB/s-1399kB/s), io=20.0MiB (20.0MB), run=4809-5842msec WRITE: bw=4908KiB/s (5026kB/s), 976KiB/s-1753KiB/s (999kB/s-1795kB/s), io=28.0MiB (29.4MB), run=4809-5842msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179206: Sat Aug 15 13:39:15 2026 read: IOPS=1, BW=1083KiB/s (1109kB/s)(7168KiB/6617msec) clat (msec): min=54, max=2641, avg=787.16, stdev=1033.45 lat (msec): min=54, max=2641, avg=787.17, stdev=1033.45 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 65], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 288], 60.00th=[ 460], | 70.00th=[ 460], 80.00th=[ 1854], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 2035, max= 3813, per=80.25%, avg=2483.75, stdev=886.18, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=774KiB/s (792kB/s)(5120KiB/6617msec); 0 zone resets clat (msec): min=100, max=306, avg=186.37, stdev=87.02 lat (msec): min=100, max=306, avg=186.46, stdev=87.00 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 101], | 30.00th=[ 114], 40.00th=[ 114], 50.00th=[ 171], 60.00th=[ 171], | 70.00th=[ 241], 80.00th=[ 241], 90.00th=[ 309], 95.00th=[ 309], | 99.00th=[ 309], 99.50th=[ 309], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 1906, max= 2035, per=45.48%, avg=1970.50, stdev=91.22, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=2.21%, ctx=80, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179207: Sat Aug 15 13:39:15 2026 read: IOPS=0, BW=332KiB/s (340kB/s)(2048KiB/6169msec) clat (msec): min=82, max=427, avg=255.24, stdev=243.83 lat (msec): min=82, max=427, avg=255.24, stdev=243.83 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 83], | 30.00th=[ 83], 40.00th=[ 83], 50.00th=[ 83], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 1906, max= 2048, per=63.88%, avg=1977.00, stdev=100.41, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1660KiB/s (1700kB/s)(10.0MiB/6169msec); 0 zone resets clat (msec): min=124, max=2779, avg=538.58, stdev=812.58 lat (msec): min=124, max=2779, avg=539.12, stdev=812.34 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 130], | 30.00th=[ 140], 40.00th=[ 144], 50.00th=[ 203], 60.00th=[ 249], | 70.00th=[ 330], 80.00th=[ 617], 90.00th=[ 676], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 2043, max= 6107, per=100.00%, avg=4514.50, stdev=1969.30, samples=4 iops : min= 1, max= 5, avg= 3.50, stdev= 1.91, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.02%, sys=4.90%, ctx=123, 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=179208: Sat Aug 15 13:39:15 2026 read: IOPS=0, BW=968KiB/s (991kB/s)(6144KiB/6347msec) clat (msec): min=93, max=364, avg=194.33, stdev=100.19 lat (msec): min=93, max=364, avg=194.33, stdev=100.19 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 96], | 30.00th=[ 96], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 201], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 2035, max= 4079, per=100.00%, avg=3309.00, stdev=1111.30, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=968KiB/s (991kB/s)(6144KiB/6347msec); 0 zone resets clat (msec): min=91, max=3626, avg=837.95, stdev=1378.52 lat (msec): min=92, max=3626, avg=838.05, stdev=1378.51 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 239], | 70.00th=[ 634], 80.00th=[ 634], 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= 2031, max= 4096, per=70.60%, avg=3059.25, stdev=1182.75, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (msec) : 100=25.00%, 250=50.00%, 500=8.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.60%, ctx=104, 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=179209: Sat Aug 15 13:39:15 2026 read: IOPS=0, BW=778KiB/s (797kB/s)(5120KiB/6578msec) clat (msec): min=104, max=308, avg=187.09, stdev=90.64 lat (msec): min=104, max=308, avg=187.10, stdev=90.64 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 105], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 150], 60.00th=[ 150], | 70.00th=[ 257], 80.00th=[ 257], 90.00th=[ 309], 95.00th=[ 309], | 99.00th=[ 309], 99.50th=[ 309], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 3813, max= 4071, per=100.00%, avg=3942.00, stdev=182.43, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1090KiB/s (1116kB/s)(7168KiB/6578msec); 0 zone resets clat (msec): min=113, max=3601, avg=774.17, stdev=1260.51 lat (msec): min=113, max=3601, avg=774.84, stdev=1260.19 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 136], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 309], 60.00th=[ 531], | 70.00th=[ 531], 80.00th=[ 575], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 1906, max= 2048, per=46.30%, avg=2006.00, stdev=67.03, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 250=50.00%, 500=25.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.93%, ctx=84, 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=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=3095KiB/s (3169kB/s), 332KiB/s-1083KiB/s (340kB/s-1109kB/s), io=20.0MiB (20.0MB), run=6169-6617msec WRITE: bw=4333KiB/s (4437kB/s), 774KiB/s-1660KiB/s (792kB/s-1700kB/s), io=28.0MiB (29.4MB), run=6169-6617msec 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=179221: Sat Aug 15 13:39:35 2026 read: IOPS=0, BW=1449KiB/s (1483kB/s)(12.0MiB/8482msec) clat (msec): min=213, max=7219, avg=2757.15, stdev=3877.04 lat (msec): min=213, max=7219, avg=2757.16, stdev=3877.04 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 7215], 80.00th=[ 7215], 90.00th=[ 7215], 95.00th=[ 7215], | 99.00th=[ 7215], 99.50th=[ 7215], 99.90th=[ 7215], 99.95th=[ 7215], | 99.99th=[ 7215] bw ( KiB/s): min= 8126, max= 8192, per=100.00%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.05%, sys=1.50%, ctx=61, 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=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=179222: Sat Aug 15 13:39:35 2026 read: IOPS=0, BW=483KiB/s (495kB/s)(4096KiB/8476msec) clat (nsec): min=6589.8M, max=6589.8M, avg=6589835231.00, stdev= 0.00 lat (nsec): min=6589.8M, max=6589.8M, avg=6589837241.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 6611], 5.00th=[ 6611], 10.00th=[ 6611], 20.00th=[ 6611], | 30.00th=[ 6611], 40.00th=[ 6611], 50.00th=[ 6611], 60.00th=[ 6611], | 70.00th=[ 6611], 80.00th=[ 6611], 90.00th=[ 6611], 95.00th=[ 6611], | 99.00th=[ 6611], 99.50th=[ 6611], 99.90th=[ 6611], 99.95th=[ 6611], | 99.99th=[ 6611] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=966KiB/s (990kB/s)(8192KiB/8476msec); 0 zone resets clat (msec): min=783, max=1015, avg=899.26, stdev=163.87 lat (msec): min=785, max=1015, avg=900.45, stdev=162.69 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 1020], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.09%, ctx=42, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179223: Sat Aug 15 13:39:35 2026 write: IOPS=0, BW=1584KiB/s (1622kB/s)(12.0MiB/7759msec); 0 zone resets clat (msec): min=286, max=6790, avg=2527.94, stdev=3693.28 lat (msec): min=286, max=6791, avg=2528.53, stdev=3693.24 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 6812], 80.00th=[ 6812], 90.00th=[ 6812], 95.00th=[ 6812], | 99.00th=[ 6812], 99.50th=[ 6812], 99.90th=[ 6812], 99.95th=[ 6812], | 99.99th=[ 6812] bw ( KiB/s): min= 8126, max= 8192, per=100.00%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=2.27%, ctx=73, 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=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=179224: Sat Aug 15 13:39:35 2026 write: IOPS=0, BW=1515KiB/s (1551kB/s)(12.0MiB/8111msec); 0 zone resets clat (msec): min=393, max=6588, avg=2642.28, stdev=3428.90 lat (msec): min=394, max=6589, avg=2643.25, stdev=3428.73 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 6611], 80.00th=[ 6611], 90.00th=[ 6611], 95.00th=[ 6611], | 99.00th=[ 6611], 99.50th=[ 6611], 99.90th=[ 6611], 99.95th=[ 6611], | 99.99th=[ 6611] 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) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.54%, ctx=52, 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=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=1932KiB/s (1978kB/s), 483KiB/s-1449KiB/s (495kB/s-1483kB/s), io=16.0MiB (16.8MB), run=8476-8482msec WRITE: bw=3866KiB/s (3959kB/s), 966KiB/s-1584KiB/s (990kB/s-1622kB/s), io=32.0MiB (33.6MB), run=7759-8476msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179216: Sat Aug 15 13:39:36 2026 read: IOPS=0, BW=2550KiB/s (2612kB/s)(12.0MiB/4818msec) clat (msec): min=579, max=2759, avg=1585.64, stdev=1099.39 lat (msec): min=579, max=2759, avg=1585.64, stdev=1099.39 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 1418], 50.00th=[ 1418], 60.00th=[ 1418], | 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= 8062, max= 8143, per=100.00%, avg=8102.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=7.85%, ctx=295, 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=179218: Sat Aug 15 13:39:36 2026 read: IOPS=0, BW=523KiB/s (536kB/s)(4096KiB/7831msec) clat (nsec): min=6392.6M, max=6392.6M, avg=6392574314.00, stdev= 0.00 lat (nsec): min=6392.6M, max=6392.6M, avg=6392576501.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 6409], 5.00th=[ 6409], 10.00th=[ 6409], 20.00th=[ 6409], | 30.00th=[ 6409], 40.00th=[ 6409], 50.00th=[ 6409], 60.00th=[ 6409], | 70.00th=[ 6409], 80.00th=[ 6409], 90.00th=[ 6409], 95.00th=[ 6409], | 99.00th=[ 6409], 99.50th=[ 6409], 99.90th=[ 6409], 99.95th=[ 6409], | 99.99th=[ 6409] bw ( KiB/s): min= 7922, max= 7922, per=100.00%, avg=7922.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1046KiB/s (1071kB/s)(8192KiB/7831msec); 0 zone resets clat (msec): min=644, max=713, avg=678.90, stdev=48.93 lat (msec): min=644, max=715, avg=680.10, stdev=49.99 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 718], | 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= 7907, max= 7907, per=100.00%, avg=7907.00, 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=0.00%, sys=4.60%, ctx=1001, 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=179219: Sat Aug 15 13:39:36 2026 write: IOPS=0, BW=1384KiB/s (1417kB/s)(12.0MiB/8879msec); 0 zone resets clat (msec): min=174, max=7625, avg=2931.38, stdev=4086.27 lat (msec): min=174, max=7627, avg=2932.04, stdev=4086.61 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 70.00th=[ 7617], 80.00th=[ 7617], 90.00th=[ 7617], 95.00th=[ 7617], | 99.00th=[ 7617], 99.50th=[ 7617], 99.90th=[ 7617], 99.95th=[ 7617], | 99.99th=[ 7617] bw ( KiB/s): min= 8143, max= 8175, per=100.00%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.72%, ctx=55, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179220: Sat Aug 15 13:39:36 2026 write: IOPS=0, BW=1539KiB/s (1576kB/s)(12.0MiB/7983msec); 0 zone resets clat (msec): min=465, max=4211, avg=2626.57, stdev=1938.13 lat (msec): min=466, max=4211, avg=2627.01, stdev=1938.24 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 3205], 50.00th=[ 3205], 60.00th=[ 3205], | 70.00th=[ 4212], 80.00th=[ 4212], 90.00th=[ 4212], 95.00th=[ 4212], | 99.00th=[ 4212], 99.50th=[ 4212], 99.90th=[ 4212], 99.95th=[ 4212], | 99.99th=[ 4212] bw ( KiB/s): min= 8143, max= 8175, per=100.00%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.45%, ctx=45, 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=2092KiB/s (2142kB/s), 523KiB/s-2550KiB/s (536kB/s-2612kB/s), io=16.0MiB (16.8MB), run=4818-7831msec WRITE: bw=3691KiB/s (3779kB/s), 1046KiB/s-1539KiB/s (1071kB/s-1576kB/s), io=32.0MiB (33.6MB), run=7831-8879msec