== sanity test 398b: DIO and buffer IO race ============== 08:15:55 (1789128955) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.63605 s, 7.6 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=180118: Fri Sep 11 08:18:20 2026 read: IOPS=12, BW=48.7KiB/s (49.8kB/s)(5992KiB/123163msec) clat (usec): min=46, max=954723, avg=45118.25, stdev=39570.82 lat (usec): min=46, max=954724, avg=45121.75, stdev=39568.14 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10028], 10.00th=[ 16188], 20.00th=[ 22152], | 30.00th=[ 27395], 40.00th=[ 31851], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 52167], 80.00th=[ 62653], 90.00th=[ 79168], 95.00th=[ 96994], | 99.00th=[168821], 99.50th=[185598], 99.90th=[371196], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 6, max= 109, per=25.15%, avg=48.30, stdev=19.80, samples=242 iops : min= 1, max= 27, avg=11.44, stdev= 5.01, samples=242 write: IOPS=12, BW=51.1KiB/s (52.3kB/s)(6296KiB/123163msec); 0 zone resets clat (usec): min=914, max=309142, avg=34980.10, stdev=37273.83 lat (usec): min=915, max=309143, avg=34981.66, stdev=37273.84 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1565], 20.00th=[ 3687], | 30.00th=[ 7504], 40.00th=[ 15926], 50.00th=[ 25560], 60.00th=[ 32900], | 70.00th=[ 44303], 80.00th=[ 58983], 90.00th=[ 84411], 95.00th=[108528], | 99.00th=[149947], 99.50th=[189793], 99.90th=[299893], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 127, per=25.35%, avg=50.95, stdev=21.32, samples=241 iops : min= 1, max= 31, avg=12.11, stdev= 5.37, samples=241 lat (usec) : 50=0.36%, 100=1.40%, 250=0.16%, 500=0.03%, 1000=0.16% lat (msec) : 2=6.25%, 4=4.65%, 10=6.93%, 20=10.09%, 50=41.28% lat (msec) : 100=23.21%, 250=5.27%, 500=0.16%, 1000=0.03% cpu : usr=0.07%, sys=5.15%, ctx=6424, 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=180120: Fri Sep 11 08:18:20 2026 read: IOPS=11, BW=47.7KiB/s (48.8kB/s)(5940KiB/124648msec) clat (usec): min=25, max=339135, avg=44592.65, stdev=30268.99 lat (usec): min=25, max=339136, avg=44596.50, stdev=30267.42 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10159], 10.00th=[ 15664], 20.00th=[ 22152], | 30.00th=[ 27132], 40.00th=[ 32637], 50.00th=[ 38536], 60.00th=[ 45351], | 70.00th=[ 53216], 80.00th=[ 62653], 90.00th=[ 79168], 95.00th=[ 99091], | 99.00th=[145753], 99.50th=[166724], 99.90th=[258999], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 6, max= 104, per=24.75%, avg=47.52, stdev=19.36, samples=244 iops : min= 1, max= 26, avg=11.24, stdev= 4.90, samples=244 write: IOPS=12, BW=50.9KiB/s (52.1kB/s)(6348KiB/124648msec); 0 zone resets clat (usec): min=947, max=976514, avg=36507.69, stdev=45358.75 lat (usec): min=947, max=976515, avg=36513.00, stdev=45359.60 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1450], 20.00th=[ 3687], | 30.00th=[ 7373], 40.00th=[ 16188], 50.00th=[ 25035], 60.00th=[ 33817], | 70.00th=[ 44827], 80.00th=[ 63177], 90.00th=[ 85459], 95.00th=[108528], | 99.00th=[175113], 99.50th=[217056], 99.90th=[312476], 99.95th=[977273], | 99.99th=[977273] bw ( KiB/s): min= 6, max= 152, per=25.20%, avg=50.65, stdev=22.26, samples=245 iops : min= 1, max= 38, avg=12.04, stdev= 5.62, samples=245 lat (usec) : 50=0.16%, 100=1.66%, 250=0.10%, 750=0.03%, 1000=0.10% lat (msec) : 2=6.71%, 4=4.07%, 10=7.03%, 20=10.42%, 50=39.32% lat (msec) : 100=24.51%, 250=5.63%, 500=0.23%, 1000=0.03% cpu : usr=0.09%, sys=5.07%, ctx=6482, 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=180123: Fri Sep 11 08:18:20 2026 read: IOPS=12, BW=48.6KiB/s (49.8kB/s)(6028KiB/123922msec) clat (usec): min=32, max=292045, avg=44251.69, stdev=30863.77 lat (usec): min=32, max=292045, avg=44254.40, stdev=30865.09 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 111], 10.00th=[ 15008], 20.00th=[ 21627], | 30.00th=[ 26608], 40.00th=[ 31851], 50.00th=[ 37487], 60.00th=[ 43779], | 70.00th=[ 53740], 80.00th=[ 63701], 90.00th=[ 81265], 95.00th=[ 96994], | 99.00th=[145753], 99.50th=[170918], 99.90th=[283116], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 7, max= 127, per=25.41%, avg=48.78, stdev=20.46, samples=241 iops : min= 1, max= 31, avg=11.56, stdev= 5.17, samples=241 write: IOPS=12, BW=50.5KiB/s (51.7kB/s)(6260KiB/123922msec); 0 zone resets clat (usec): min=931, max=964312, avg=36237.46, stdev=44672.29 lat (usec): min=932, max=964314, avg=36243.05, stdev=44669.90 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1205], 10.00th=[ 1500], 20.00th=[ 3359], | 30.00th=[ 6783], 40.00th=[ 15795], 50.00th=[ 24773], 60.00th=[ 34866], | 70.00th=[ 46400], 80.00th=[ 61604], 90.00th=[ 88605], 95.00th=[109577], | 99.00th=[173016], 99.50th=[200279], 99.90th=[267387], 99.95th=[960496], | 99.99th=[960496] bw ( KiB/s): min= 6, max= 111, per=24.99%, avg=50.22, stdev=21.68, samples=243 iops : min= 1, max= 27, avg=11.93, stdev= 5.45, samples=243 lat (usec) : 50=0.42%, 100=1.95%, 250=0.10%, 750=0.03%, 1000=0.13% lat (msec) : 2=6.87%, 4=4.72%, 10=6.64%, 20=10.32%, 50=38.44% lat (msec) : 100=24.67%, 250=5.50%, 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=5.03%, ctx=6331, 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=180124: Fri Sep 11 08:18:20 2026 read: IOPS=12, BW=48.7KiB/s (49.8kB/s)(6052KiB/124394msec) clat (usec): min=33, max=266082, avg=44071.62, stdev=30975.58 lat (usec): min=34, max=266083, avg=44073.21, stdev=30975.39 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 100], 10.00th=[ 15008], 20.00th=[ 21103], | 30.00th=[ 26346], 40.00th=[ 31851], 50.00th=[ 38011], 60.00th=[ 45351], | 70.00th=[ 52691], 80.00th=[ 62653], 90.00th=[ 79168], 95.00th=[ 99091], | 99.00th=[162530], 99.50th=[181404], 99.90th=[263193], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 7, max= 112, per=25.47%, avg=48.90, stdev=18.57, samples=241 iops : min= 1, max= 28, avg=11.59, stdev= 4.71, samples=241 write: IOPS=12, BW=50.1KiB/s (51.3kB/s)(6236KiB/124394msec); 0 zone resets clat (usec): min=892, max=1012.2k, avg=36665.20, stdev=45303.55 lat (usec): min=893, max=1012.2k, avg=36668.31, stdev=45302.79 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1172], 10.00th=[ 1418], | 20.00th=[ 3294], 30.00th=[ 6915], 40.00th=[ 16319], | 50.00th=[ 25297], 60.00th=[ 34341], 70.00th=[ 46924], | 80.00th=[ 63177], 90.00th=[ 90702], 95.00th=[ 109577], | 99.00th=[ 164627], 99.50th=[ 206570], 99.90th=[ 240124], | 99.95th=[1010828], 99.99th=[1010828] bw ( KiB/s): min= 7, max= 126, per=24.83%, avg=49.92, stdev=21.28, samples=243 iops : min= 1, max= 31, avg=11.85, stdev= 5.40, samples=243 lat (usec) : 50=0.39%, 100=2.05%, 250=0.13%, 500=0.03%, 1000=0.13% lat (msec) : 2=6.87%, 4=4.46%, 10=6.38%, 20=10.22%, 50=38.87% lat (msec) : 100=24.71%, 250=5.66%, 500=0.07%, 2000=0.03% cpu : usr=0.06%, sys=4.98%, ctx=6478, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=193KiB/s (197kB/s), 47.7KiB/s-48.7KiB/s (48.8kB/s-49.8kB/s), io=23.4MiB (24.6MB), run=123163-124648msec WRITE: bw=202KiB/s (207kB/s), 50.1KiB/s-51.1KiB/s (51.3kB/s-52.3kB/s), io=24.6MiB (25.7MB), run=123163-124648msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180117: Fri Sep 11 08:18:58 2026 read: IOPS=9, BW=37.0KiB/s (37.9kB/s)(5992KiB/161740msec) clat (msec): min=5, max=967, avg=42.54, stdev=46.98 lat (msec): min=5, max=967, avg=42.54, stdev=46.98 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 94], 95.00th=[ 127], | 99.00th=[ 209], 99.50th=[ 251], 99.90th=[ 347], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7, max= 128, per=25.64%, avg=37.69, stdev=26.14, samples=309 iops : min= 1, max= 32, avg= 8.76, stdev= 6.58, samples=309 write: IOPS=9, BW=38.9KiB/s (39.9kB/s)(6296KiB/161740msec); 0 zone resets clat (msec): min=12, max=369, avg=61.97, stdev=43.76 lat (msec): min=12, max=369, avg=61.97, stdev=43.76 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 58], | 70.00th=[ 73], 80.00th=[ 93], 90.00th=[ 124], 95.00th=[ 148], | 99.00th=[ 218], 99.50th=[ 243], 99.90th=[ 342], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 7, max= 119, per=25.44%, avg=39.18, stdev=23.73, samples=312 iops : min= 1, max= 29, avg= 9.13, stdev= 5.98, samples=312 lat (msec) : 10=2.38%, 20=15.49%, 50=46.13%, 100=22.98%, 250=12.63% lat (msec) : 500=0.36%, 1000=0.03% cpu : usr=0.06%, sys=1.79%, ctx=4830, 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=180119: Fri Sep 11 08:18:58 2026 read: IOPS=9, BW=36.8KiB/s (37.7kB/s)(5940KiB/161201msec) clat (msec): min=5, max=955, avg=41.72, stdev=44.56 lat (msec): min=5, max=955, avg=41.72, stdev=44.56 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=[ 34], | 70.00th=[ 44], 80.00th=[ 60], 90.00th=[ 90], 95.00th=[ 120], | 99.00th=[ 188], 99.50th=[ 205], 99.90th=[ 372], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 119, per=25.69%, avg=37.76, stdev=26.32, samples=306 iops : min= 1, max= 29, avg= 8.78, stdev= 6.62, samples=306 write: IOPS=9, BW=39.4KiB/s (40.3kB/s)(6348KiB/161201msec); 0 zone resets clat (msec): min=7, max=375, avg=62.22, stdev=45.77 lat (msec): min=7, max=375, avg=62.22, stdev=45.77 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 73], 80.00th=[ 90], 90.00th=[ 118], 95.00th=[ 146], | 99.00th=[ 232], 99.50th=[ 275], 99.90th=[ 372], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 120, per=25.43%, avg=39.16, stdev=24.62, samples=315 iops : min= 1, max= 30, avg= 9.13, stdev= 6.21, samples=315 lat (msec) : 10=2.47%, 20=15.85%, 50=45.02%, 100=24.48%, 250=11.72% lat (msec) : 500=0.42%, 1000=0.03% cpu : usr=0.05%, sys=1.74%, ctx=4720, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180121: Fri Sep 11 08:18:58 2026 read: IOPS=9, BW=37.2KiB/s (38.1kB/s)(6028KiB/161945msec) clat (msec): min=4, max=417, avg=41.61, stdev=37.43 lat (msec): min=4, max=417, avg=41.61, stdev=37.43 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=[ 36], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 92], 95.00th=[ 122], | 99.00th=[ 171], 99.50th=[ 192], 99.90th=[ 271], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7, max= 135, per=25.60%, avg=37.63, stdev=25.07, samples=312 iops : min= 1, max= 33, avg= 8.75, stdev= 6.33, samples=312 write: IOPS=9, BW=38.7KiB/s (39.6kB/s)(6260KiB/161945msec); 0 zone resets clat (msec): min=8, max=1008, avg=63.10, stdev=52.01 lat (msec): min=8, max=1008, avg=63.10, stdev=52.01 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 59], | 70.00th=[ 74], 80.00th=[ 94], 90.00th=[ 125], 95.00th=[ 148], | 99.00th=[ 220], 99.50th=[ 292], 99.90th=[ 376], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 117, per=25.22%, avg=38.83, stdev=25.05, samples=314 iops : min= 1, max= 29, avg= 9.04, stdev= 6.31, samples=314 lat (msec) : 10=2.80%, 20=15.66%, 50=45.74%, 100=22.59%, 250=12.76% lat (msec) : 500=0.42%, 2000=0.03% cpu : usr=0.05%, sys=1.72%, ctx=4749, 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=180122: Fri Sep 11 08:18:58 2026 read: IOPS=9, BW=37.3KiB/s (38.2kB/s)(6052KiB/162253msec) clat (msec): min=5, max=420, avg=42.30, stdev=40.79 lat (msec): min=5, max=420, avg=42.31, stdev=40.79 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 60], 90.00th=[ 93], 95.00th=[ 125], | 99.00th=[ 188], 99.50th=[ 218], 99.90th=[ 368], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 151, per=25.97%, avg=38.17, stdev=27.13, samples=307 iops : min= 1, max= 37, avg= 8.88, stdev= 6.84, samples=307 write: IOPS=9, BW=38.4KiB/s (39.4kB/s)(6236KiB/162253msec); 0 zone resets clat (msec): min=11, max=1007, avg=62.71, stdev=52.02 lat (msec): min=11, max=1007, avg=62.72, stdev=52.02 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 56], | 70.00th=[ 72], 80.00th=[ 97], 90.00th=[ 128], 95.00th=[ 148], | 99.00th=[ 222], 99.50th=[ 305], 99.90th=[ 359], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 111, per=24.74%, avg=38.09, stdev=24.93, samples=317 iops : min= 1, max= 27, avg= 8.87, stdev= 6.30, samples=317 lat (msec) : 10=2.31%, 20=16.47%, 50=45.74%, 100=21.68%, 250=13.22% lat (msec) : 500=0.55%, 2000=0.03% cpu : usr=0.05%, sys=1.76%, ctx=4873, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=148KiB/s (152kB/s), 36.8KiB/s-37.3KiB/s (37.7kB/s-38.2kB/s), io=23.4MiB (24.6MB), run=161201-162253msec WRITE: bw=155KiB/s (159kB/s), 38.4KiB/s-39.4KiB/s (39.4kB/s-40.3kB/s), io=24.6MiB (25.7MB), run=161201-162253msec 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=180167: Fri Sep 11 08:19:38 2026 read: IOPS=12, BW=198KiB/s (203kB/s)(5920KiB/29877msec) clat (usec): min=36, max=226358, avg=42234.11, stdev=29022.93 lat (usec): min=37, max=226359, avg=42241.22, stdev=29029.23 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 2573], 20.00th=[ 21627], | 30.00th=[ 27132], 40.00th=[ 32637], 50.00th=[ 38536], 60.00th=[ 44827], | 70.00th=[ 52691], 80.00th=[ 60031], 90.00th=[ 74974], 95.00th=[ 88605], | 99.00th=[143655], 99.50th=[177210], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 63, max= 480, per=24.77%, avg=198.41, stdev=72.27, samples=59 iops : min= 3, max= 30, avg=11.63, stdev= 4.60, samples=59 write: IOPS=13, BW=213KiB/s (218kB/s)(6368KiB/29877msec); 0 zone resets clat (usec): min=1413, max=198067, avg=35170.55, stdev=31556.91 lat (usec): min=1414, max=198069, avg=35177.14, stdev=31560.07 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2573], 10.00th=[ 4228], 20.00th=[ 6259], | 30.00th=[ 11469], 40.00th=[ 19268], 50.00th=[ 27132], 60.00th=[ 35914], | 70.00th=[ 45876], 80.00th=[ 60031], 90.00th=[ 81265], 95.00th=[ 93848], | 99.00th=[130548], 99.50th=[154141], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 415, per=25.67%, avg=216.43, stdev=88.38, samples=58 iops : min= 1, max= 25, avg=12.78, stdev= 5.65, samples=58 lat (usec) : 50=0.26%, 100=3.91%, 250=0.26%, 500=0.13% lat (msec) : 2=1.56%, 4=3.52%, 10=8.98%, 20=11.33%, 50=39.58% lat (msec) : 100=26.56%, 250=3.91% cpu : usr=0.06%, sys=6.57%, ctx=1801, 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=180168: Fri Sep 11 08:19:38 2026 read: IOPS=12, BW=195KiB/s (200kB/s)(5744KiB/29478msec) clat (usec): min=37, max=266190, avg=42239.01, stdev=29467.43 lat (usec): min=37, max=266191, avg=42240.16, stdev=29467.44 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 63], 10.00th=[ 10159], 20.00th=[ 22152], | 30.00th=[ 27395], 40.00th=[ 34341], 50.00th=[ 39584], 60.00th=[ 45351], | 70.00th=[ 51119], 80.00th=[ 58459], 90.00th=[ 70779], 95.00th=[ 83362], | 99.00th=[131597], 99.50th=[227541], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 62, max= 440, per=24.02%, avg=192.36, stdev=69.35, samples=58 iops : min= 3, max= 27, avg=11.24, stdev= 4.41, samples=58 write: IOPS=13, BW=222KiB/s (227kB/s)(6544KiB/29478msec); 0 zone resets clat (usec): min=1389, max=170615, avg=34740.14, stdev=32885.42 lat (usec): min=1390, max=170617, avg=34743.36, stdev=32886.60 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2802], 10.00th=[ 4146], 20.00th=[ 6587], | 30.00th=[ 10683], 40.00th=[ 17171], 50.00th=[ 25560], 60.00th=[ 33817], | 70.00th=[ 43254], 80.00th=[ 56886], 90.00th=[ 83362], 95.00th=[104334], | 99.00th=[130548], 99.50th=[154141], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 62, max= 381, per=26.04%, avg=219.53, stdev=81.41, samples=58 iops : min= 3, max= 23, avg=12.97, stdev= 5.16, samples=58 lat (usec) : 50=0.39%, 100=3.26%, 250=0.26%, 500=0.13%, 750=0.13% lat (msec) : 2=1.43%, 4=3.39%, 10=11.20%, 20=11.20%, 50=40.76% lat (msec) : 100=23.31%, 250=4.43%, 500=0.13% cpu : usr=0.09%, sys=6.77%, ctx=1787, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180170: Fri Sep 11 08:19:38 2026 read: IOPS=13, BW=213KiB/s (218kB/s)(6256KiB/29367msec) clat (usec): min=35, max=164370, avg=42718.38, stdev=27358.34 lat (usec): min=35, max=164370, avg=42719.60, stdev=27358.46 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 65], 10.00th=[ 15401], 20.00th=[ 22676], | 30.00th=[ 28443], 40.00th=[ 33424], 50.00th=[ 38011], 60.00th=[ 44827], | 70.00th=[ 50594], 80.00th=[ 60556], 90.00th=[ 76022], 95.00th=[ 94897], | 99.00th=[143655], 99.50th=[160433], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 63, max= 377, per=26.58%, avg=212.91, stdev=68.22, samples=58 iops : min= 3, max= 23, avg=12.55, stdev= 4.31, samples=58 write: IOPS=12, BW=205KiB/s (210kB/s)(6032KiB/29367msec); 0 zone resets clat (usec): min=1655, max=163804, avg=33009.14, stdev=30032.97 lat (usec): min=1656, max=163806, avg=33011.09, stdev=30032.96 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2900], 10.00th=[ 4359], 20.00th=[ 7767], | 30.00th=[ 12780], 40.00th=[ 19006], 50.00th=[ 23462], 60.00th=[ 32375], | 70.00th=[ 41681], 80.00th=[ 54264], 90.00th=[ 69731], 95.00th=[ 93848], | 99.00th=[143655], 99.50th=[149947], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 63, max= 397, per=24.17%, avg=203.78, stdev=82.76, samples=58 iops : min= 3, max= 24, avg=11.95, stdev= 5.23, samples=58 lat (usec) : 50=0.13%, 100=3.12%, 250=0.39%, 750=0.13% lat (msec) : 2=0.78%, 4=3.78%, 10=8.20%, 20=12.37%, 50=44.01% lat (msec) : 100=23.05%, 250=4.04% cpu : usr=0.06%, sys=6.53%, ctx=1821, 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=180172: Fri Sep 11 08:19:38 2026 read: IOPS=13, BW=212KiB/s (217kB/s)(6032KiB/28434msec) clat (usec): min=49, max=231079, avg=40243.70, stdev=29627.73 lat (usec): min=50, max=231080, avg=40244.69, stdev=29627.71 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 63], 10.00th=[ 145], 20.00th=[ 21103], | 30.00th=[ 25035], 40.00th=[ 28967], 50.00th=[ 34341], 60.00th=[ 41157], | 70.00th=[ 49021], 80.00th=[ 58459], 90.00th=[ 73925], 95.00th=[ 93848], | 99.00th=[160433], 99.50th=[173016], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 31, max= 413, per=26.44%, avg=211.80, stdev=84.40, samples=56 iops : min= 1, max= 25, avg=12.46, stdev= 5.35, samples=56 write: IOPS=13, BW=220KiB/s (225kB/s)(6256KiB/28434msec); 0 zone resets clat (usec): min=1519, max=184102, avg=33225.95, stdev=31728.72 lat (usec): min=1521, max=184103, avg=33228.97, stdev=31727.65 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 2343], 10.00th=[ 3916], 20.00th=[ 6194], | 30.00th=[ 8979], 40.00th=[ 15008], 50.00th=[ 22152], 60.00th=[ 32113], | 70.00th=[ 45876], 80.00th=[ 58459], 90.00th=[ 77071], 95.00th=[ 99091], | 99.00th=[127402], 99.50th=[147850], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 62, max= 439, per=26.19%, avg=220.75, stdev=83.47, samples=56 iops : min= 3, max= 27, avg=13.04, stdev= 5.27, samples=56 lat (usec) : 50=0.26%, 100=4.56%, 250=0.26%, 500=0.13%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=2.34%, 4=3.39%, 10=11.07%, 20=10.81%, 50=39.19% lat (msec) : 100=23.44%, 250=4.17% cpu : usr=0.07%, sys=6.73%, ctx=1793, 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=802KiB/s (821kB/s), 195KiB/s-213KiB/s (200kB/s-218kB/s), io=23.4MiB (24.5MB), run=28434-29877msec WRITE: bw=843KiB/s (864kB/s), 205KiB/s-222KiB/s (210kB/s-227kB/s), io=24.6MiB (25.8MB), run=28434-29877msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180166: Fri Sep 11 08:19:49 2026 read: IOPS=8, BW=143KiB/s (146kB/s)(5920KiB/41515msec) clat (msec): min=6, max=205, avg=45.21, stdev=32.62 lat (msec): min=6, max=205, avg=45.21, stdev=32.62 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 48], 80.00th=[ 64], 90.00th=[ 93], 95.00th=[ 109], | 99.00th=[ 186], 99.50th=[ 201], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 30, max= 352, per=24.95%, avg=143.74, stdev=76.24, samples=81 iops : min= 1, max= 22, avg= 8.15, stdev= 4.82, samples=81 write: IOPS=9, BW=153KiB/s (157kB/s)(6368KiB/41515msec); 0 zone resets clat (msec): min=14, max=259, avg=61.70, stdev=37.46 lat (msec): min=14, max=259, avg=61.70, stdev=37.46 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 52], 60.00th=[ 62], | 70.00th=[ 70], 80.00th=[ 87], 90.00th=[ 111], 95.00th=[ 136], | 99.00th=[ 203], 99.50th=[ 247], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 31, max= 352, per=25.42%, avg=154.32, stdev=70.91, samples=81 iops : min= 1, max= 22, avg= 8.81, stdev= 4.51, samples=81 lat (msec) : 10=0.65%, 20=6.90%, 50=52.47%, 100=29.56%, 250=10.29% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.06%, ctx=1244, 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=180169: Fri Sep 11 08:19:49 2026 read: IOPS=8, BW=138KiB/s (142kB/s)(5744KiB/41493msec) clat (msec): min=6, max=231, avg=44.32, stdev=32.33 lat (msec): min=6, max=231, avg=44.32, stdev=32.33 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 36], 60.00th=[ 41], | 70.00th=[ 48], 80.00th=[ 61], 90.00th=[ 92], 95.00th=[ 116], | 99.00th=[ 153], 99.50th=[ 163], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 31, max= 383, per=24.55%, avg=141.41, stdev=76.24, samples=80 iops : min= 1, max= 23, avg= 8.01, stdev= 4.86, samples=80 write: IOPS=9, BW=158KiB/s (161kB/s)(6544KiB/41493msec); 0 zone resets clat (msec): min=15, max=269, avg=61.91, stdev=39.56 lat (msec): min=15, max=269, avg=61.91, stdev=39.57 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 49], 60.00th=[ 59], | 70.00th=[ 73], 80.00th=[ 90], 90.00th=[ 114], 95.00th=[ 138], | 99.00th=[ 209], 99.50th=[ 230], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 383, per=25.88%, avg=157.07, stdev=79.48, samples=82 iops : min= 1, max= 23, avg= 8.99, stdev= 5.04, samples=82 lat (msec) : 10=1.43%, 20=9.51%, 50=50.13%, 100=27.47%, 250=11.33% lat (msec) : 500=0.13% cpu : usr=0.04%, sys=1.99%, ctx=1195, 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=180171: Fri Sep 11 08:19:49 2026 read: IOPS=9, BW=152KiB/s (156kB/s)(6256KiB/41144msec) clat (msec): min=7, max=239, avg=44.79, stdev=34.62 lat (msec): min=7, max=239, avg=44.79, stdev=34.62 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 57], 90.00th=[ 94], 95.00th=[ 122], | 99.00th=[ 169], 99.50th=[ 178], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 31, max= 341, per=26.74%, avg=154.05, stdev=84.20, samples=80 iops : min= 1, max= 21, avg= 8.81, stdev= 5.33, samples=80 write: IOPS=9, BW=147KiB/s (150kB/s)(6032KiB/41144msec); 0 zone resets clat (msec): min=14, max=289, avg=61.87, stdev=39.13 lat (msec): min=14, max=289, avg=61.88, stdev=39.13 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 48], 60.00th=[ 61], | 70.00th=[ 72], 80.00th=[ 92], 90.00th=[ 116], 95.00th=[ 133], | 99.00th=[ 220], 99.50th=[ 253], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 62, max= 352, per=23.94%, avg=145.31, stdev=65.45, samples=81 iops : min= 3, max= 22, avg= 8.25, stdev= 4.18, samples=81 lat (msec) : 10=0.52%, 20=9.38%, 50=53.91%, 100=23.96%, 250=11.98% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=2.10%, 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=180173: Fri Sep 11 08:19:49 2026 read: IOPS=9, BW=147KiB/s (151kB/s)(6032KiB/41002msec) clat (msec): min=6, max=235, avg=44.01, stdev=34.47 lat (msec): min=6, max=235, avg=44.02, stdev=34.47 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 47], 80.00th=[ 61], 90.00th=[ 94], 95.00th=[ 114], | 99.00th=[ 159], 99.50th=[ 232], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 31, max= 448, per=25.27%, avg=145.57, stdev=82.50, samples=81 iops : min= 1, max= 28, avg= 8.27, stdev= 5.27, samples=81 write: IOPS=9, BW=153KiB/s (156kB/s)(6256KiB/41002msec); 0 zone resets clat (msec): min=9, max=269, avg=62.28, stdev=40.83 lat (msec): min=9, max=269, avg=62.28, stdev=40.83 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 58], | 70.00th=[ 70], 80.00th=[ 90], 90.00th=[ 121], 95.00th=[ 146], | 99.00th=[ 224], 99.50th=[ 264], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 414, per=25.16%, avg=152.70, stdev=78.04, samples=81 iops : min= 1, max= 25, avg= 8.72, stdev= 4.93, samples=81 lat (msec) : 10=1.04%, 20=11.20%, 50=49.22%, 100=26.43%, 250=11.85% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=2.05%, ctx=1209, 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=577KiB/s (591kB/s), 138KiB/s-152KiB/s (142kB/s-156kB/s), io=23.4MiB (24.5MB), run=41002-41515msec WRITE: bw=607KiB/s (622kB/s), 147KiB/s-158KiB/s (150kB/s-161kB/s), io=24.6MiB (25.8MB), run=41002-41515msec 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=180185: Fri Sep 11 08:20:05 2026 read: IOPS=2, BW=2090KiB/s (2140kB/s)(7168KiB/3430msec) clat (msec): min=93, max=606, avg=256.51, stdev=189.22 lat (msec): min=93, max=606, avg=256.51, stdev=189.22 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 140], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 169], 60.00th=[ 186], | 70.00th=[ 186], 80.00th=[ 435], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 2043, max= 4740, per=66.72%, avg=3612.67, stdev=1401.85, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1493KiB/s (1529kB/s)(5120KiB/3430msec); 0 zone resets clat (msec): min=118, max=607, avg=319.17, stdev=195.21 lat (msec): min=122, max=607, avg=320.06, stdev=194.19 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 120], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 253], 60.00th=[ 253], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1865, max= 4087, per=33.04%, avg=2504.50, stdev=1057.98, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=16.67% cpu : usr=0.03%, sys=4.52%, ctx=77, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180186: Fri Sep 11 08:20:05 2026 read: IOPS=0, BW=582KiB/s (596kB/s)(2048KiB/3516msec) clat (msec): min=84, max=620, avg=352.35, stdev=379.18 lat (msec): min=84, max=620, avg=352.35, stdev=379.18 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 85], | 30.00th=[ 85], 40.00th=[ 85], 50.00th=[ 85], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 1605, max= 2043, per=33.68%, avg=1824.00, stdev=309.71, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2912KiB/s (2982kB/s)(10.0MiB/3516msec); 0 zone resets clat (msec): min=100, max=564, avg=267.54, stdev=185.52 lat (msec): min=100, max=564, avg=267.64, stdev=185.55 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 132], | 30.00th=[ 142], 40.00th=[ 146], 50.00th=[ 159], 60.00th=[ 161], | 70.00th=[ 247], 80.00th=[ 510], 90.00th=[ 514], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1865, max= 6131, per=45.64%, avg=3460.00, stdev=1740.26, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 100=8.33%, 250=58.33%, 750=33.33% cpu : usr=0.00%, sys=4.15%, ctx=75, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180187: Fri Sep 11 08:20:05 2026 read: IOPS=1, BW=1625KiB/s (1664kB/s)(6144KiB/3782msec) clat (msec): min=90, max=621, avg=216.26, stdev=201.12 lat (msec): min=90, max=621, avg=216.26, stdev=201.12 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 123], | 30.00th=[ 123], 40.00th=[ 132], 50.00th=[ 132], 60.00th=[ 138], | 70.00th=[ 194], 80.00th=[ 194], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 1865, max= 4087, per=61.60%, avg=3335.67, stdev=1273.74, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1625KiB/s (1664kB/s)(6144KiB/3782msec); 0 zone resets clat (msec): min=115, max=743, avg=404.37, stdev=272.98 lat (msec): min=116, max=743, avg=404.45, stdev=272.98 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 257], 50.00th=[ 257], 60.00th=[ 485], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1865, max= 5111, per=36.40%, avg=2759.50, stdev=1569.63, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=25.00% cpu : usr=0.05%, sys=4.50%, ctx=76, 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=180188: Fri Sep 11 08:20:05 2026 read: IOPS=1, BW=1498KiB/s (1533kB/s)(5120KiB/3419msec) clat (msec): min=107, max=562, avg=344.39, stdev=217.03 lat (msec): min=107, max=562, avg=344.39, stdev=217.03 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 108], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 2039, max= 4055, per=50.09%, avg=2712.33, stdev=1162.79, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=2, BW=2097KiB/s (2147kB/s)(7168KiB/3419msec); 0 zone resets clat (msec): min=98, max=514, avg=216.11, stdev=152.67 lat (msec): min=98, max=514, avg=216.18, stdev=152.67 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 128], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 144], 60.00th=[ 165], | 70.00th=[ 165], 80.00th=[ 334], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 2027, max= 4675, per=41.14%, avg=3118.75, stdev=1309.54, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=16.67%, 750=25.00% cpu : usr=0.00%, sys=3.39%, ctx=54, 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=5415KiB/s (5545kB/s), 582KiB/s-2090KiB/s (596kB/s-2140kB/s), io=20.0MiB (20.0MB), run=3419-3782msec WRITE: bw=7581KiB/s (7763kB/s), 1493KiB/s-2912KiB/s (1529kB/s-2982kB/s), io=28.0MiB (29.4MB), run=3419-3782msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180191: Fri Sep 11 08:20:06 2026 read: IOPS=1, BW=1731KiB/s (1773kB/s)(7168KiB/4140msec) clat (usec): min=535, max=418619, avg=196881.94, stdev=158026.96 lat (usec): min=537, max=418621, avg=196883.43, stdev=158026.86 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 898], | 30.00th=[149947], 40.00th=[149947], 50.00th=[208667], 60.00th=[291505], | 70.00th=[291505], 80.00th=[308282], 90.00th=[417334], 95.00th=[417334], | 99.00th=[417334], 99.50th=[417334], 99.90th=[417334], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 1878, max= 2836, per=45.89%, avg=2168.00, stdev=380.13, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 write: IOPS=1, BW=1237KiB/s (1266kB/s)(5120KiB/4140msec); 0 zone resets clat (msec): min=342, max=908, avg=551.67, stdev=240.75 lat (msec): min=342, max=908, avg=551.79, stdev=240.74 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 2039, max= 3574, per=38.61%, avg=2553.67, stdev=883.65, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=16.67%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=12.66%, ctx=271, 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=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=180192: Fri Sep 11 08:20:06 2026 read: IOPS=0, BW=472KiB/s (484kB/s)(2048KiB/4335msec) clat (usec): min=1736, max=333697, avg=167717.12, stdev=234731.68 lat (usec): min=1738, max=333698, avg=167718.41, stdev=234731.29 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 1745], 10.00th=[ 1745], 20.00th=[ 1745], | 30.00th=[ 1745], 40.00th=[ 1745], 50.00th=[ 1745], 60.00th=[333448], | 70.00th=[333448], 80.00th=[333448], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 1510, max= 1787, per=34.90%, avg=1648.50, stdev=195.87, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2362KiB/s (2419kB/s)(10.0MiB/4335msec); 0 zone resets clat (msec): min=143, max=1495, avg=398.98, stdev=412.46 lat (msec): min=143, max=1500, avg=399.62, stdev=414.09 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 163], | 30.00th=[ 182], 40.00th=[ 197], 50.00th=[ 239], 60.00th=[ 249], | 70.00th=[ 259], 80.00th=[ 447], 90.00th=[ 617], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 1510, max= 4096, per=43.25%, avg=2860.67, stdev=1183.57, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.33, samples=6 lat (msec) : 2=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.07%, sys=15.07%, ctx=146, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180193: Fri Sep 11 08:20:06 2026 read: IOPS=1, BW=1757KiB/s (1799kB/s)(6144KiB/3497msec) clat (usec): min=471, max=790920, avg=246119.34, stdev=289588.94 lat (usec): min=472, max=790922, avg=246120.61, stdev=289589.43 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], 20.00th=[ 685], | 30.00th=[ 685], 40.00th=[212861], 50.00th=[212861], 60.00th=[217056], | 70.00th=[252707], 80.00th=[252707], 90.00th=[792724], 95.00th=[792724], | 99.00th=[792724], 99.50th=[792724], 99.90th=[792724], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 1787, max= 4055, per=54.47%, avg=2573.33, stdev=1283.97, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1757KiB/s (1799kB/s)(6144KiB/3497msec); 0 zone resets clat (msec): min=169, max=860, avg=335.77, stdev=266.25 lat (msec): min=170, max=860, avg=335.89, stdev=266.27 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 180], 50.00th=[ 180], 60.00th=[ 309], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1787, max= 3043, per=33.66%, avg=2226.25, stdev=557.22, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=41.67%, 500=25.00%, 1000=16.67% cpu : usr=0.06%, sys=14.50%, ctx=164, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180194: Fri Sep 11 08:20:06 2026 read: IOPS=1, BW=1346KiB/s (1378kB/s)(5120KiB/3804msec) clat (usec): min=582, max=293802, avg=143284.02, stdev=146512.69 lat (usec): min=583, max=293802, avg=143285.11, stdev=146512.56 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[ 586], | 30.00th=[ 898], 40.00th=[ 898], 50.00th=[128451], 60.00th=[128451], | 70.00th=[291505], 80.00th=[291505], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 2027, max= 5361, per=78.20%, avg=3694.00, stdev=2357.49, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1884KiB/s (1930kB/s)(7168KiB/3804msec); 0 zone resets clat (msec): min=166, max=946, avg=440.52, stdev=318.36 lat (msec): min=166, max=946, avg=440.82, stdev=318.28 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 203], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 271], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 827], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 1436, max= 2039, per=27.72%, avg=1833.40, stdev=245.88, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=33.33%, 500=33.33%, 1000=16.67% cpu : usr=0.03%, sys=14.62%, ctx=151, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4724KiB/s (4838kB/s), 472KiB/s-1757KiB/s (484kB/s-1799kB/s), io=20.0MiB (20.0MB), run=3497-4335msec WRITE: bw=6614KiB/s (6773kB/s), 1237KiB/s-2362KiB/s (1266kB/s-2419kB/s), io=28.0MiB (29.4MB), run=3497-4335msec 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=180201: Fri Sep 11 08:20:21 2026 read: IOPS=2, BW=8611KiB/s (8818kB/s)(12.0MiB/1427msec) clat (msec): min=407, max=479, avg=434.05, stdev=39.62 lat (msec): min=407, max=479, avg=434.06, stdev=39.62 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min=16286, max=16286, per=100.00%, avg=16286.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=9.26%, 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=180202: Fri Sep 11 08:20:21 2026 read: IOPS=0, BW=1174KiB/s (1202kB/s)(4096KiB/3488msec) clat (nsec): min=1206.7M, max=1206.7M, avg=1206707698.00, stdev= 0.00 lat (nsec): min=1206.7M, max=1206.7M, avg=1206710738.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1200], 5.00th=[ 1200], 10.00th=[ 1200], 20.00th=[ 1200], | 30.00th=[ 1200], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 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 write: IOPS=0, BW=2349KiB/s (2405kB/s)(8192KiB/3488msec); 0 zone resets clat (msec): min=1006, max=1154, avg=1080.34, stdev=105.06 lat (msec): min=1006, max=1157, avg=1082.05, stdev=106.91 clat percentiles (msec): | 1.00th=[ 1003], 5.00th=[ 1003], 10.00th=[ 1003], 20.00th=[ 1003], | 30.00th=[ 1003], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1150], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8000, max= 8000, per=85.16%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=3.47%, ctx=88, 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=180203: Fri Sep 11 08:20:21 2026 write: IOPS=0, BW=3687KiB/s (3775kB/s)(12.0MiB/3333msec); 0 zone resets clat (msec): min=375, max=1715, avg=1062.55, stdev=670.82 lat (msec): min=375, max=1716, avg=1063.03, stdev=670.86 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 8143, max= 8192, per=86.94%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.04%, ctx=83, 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=180205: Fri Sep 11 08:20:21 2026 write: IOPS=0, BW=3814KiB/s (3905kB/s)(12.0MiB/3222msec); 0 zone resets clat (msec): min=480, max=1521, avg=938.36, stdev=531.78 lat (msec): min=480, max=1522, avg=938.89, stdev=531.97 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 481], 10.00th=[ 481], 20.00th=[ 481], | 30.00th=[ 481], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 1519], 80.00th=[ 1519], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 8110, max= 8159, per=86.59%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.25%, ctx=87, 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=4697KiB/s (4810kB/s), 1174KiB/s-8611KiB/s (1202kB/s-8818kB/s), io=16.0MiB (16.8MB), run=1427-3488msec WRITE: bw=9394KiB/s (9620kB/s), 2349KiB/s-3814KiB/s (2405kB/s-3905kB/s), io=32.0MiB (33.6MB), run=3222-3488msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180204: Fri Sep 11 08:20:21 2026 read: IOPS=1, BW=4154KiB/s (4254kB/s)(12.0MiB/2958msec) clat (msec): min=750, max=1095, avg=949.92, stdev=178.31 lat (msec): min=750, max=1095, avg=949.92, stdev=178.31 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7772, max= 7801, per=100.00%, avg=7786.50, stdev=20.51, 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=11.87%, ctx=330, 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=180206: Fri Sep 11 08:20:21 2026 read: IOPS=0, BW=1099KiB/s (1125kB/s)(4096KiB/3727msec) clat (nsec): min=984064k, max=984064k, avg=984064488.00, stdev= 0.00 lat (nsec): min=984068k, max=984068k, avg=984067955.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 986], 5.00th=[ 986], 10.00th=[ 986], 20.00th=[ 986], | 30.00th=[ 986], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7801, max= 7801, per=100.00%, avg=7801.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2198KiB/s (2251kB/s)(8192KiB/3727msec); 0 zone resets clat (msec): min=517, max=2035, avg=1276.39, stdev=1073.07 lat (msec): min=518, max=2035, avg=1276.75, stdev=1073.01 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 518], 50.00th=[ 518], 60.00th=[ 2039], | 70.00th=[ 2039], 80.00th=[ 2039], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 8159, max= 8159, per=97.29%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=4.24%, ctx=162, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180207: Fri Sep 11 08:20:21 2026 write: IOPS=0, BW=3145KiB/s (3221kB/s)(12.0MiB/3907msec); 0 zone resets clat (msec): min=259, max=2295, avg=1218.57, stdev=1022.81 lat (msec): min=260, max=2306, avg=1222.49, stdev=1028.53 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 2299], 80.00th=[ 2299], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7772, max= 7772, per=92.68%, avg=7772.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.51%, ctx=60, 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=180208: Fri Sep 11 08:20:21 2026 write: IOPS=0, BW=3559KiB/s (3644kB/s)(12.0MiB/3453msec); 0 zone resets clat (msec): min=289, max=2145, avg=1093.61, stdev=952.77 lat (msec): min=289, max=2146, avg=1093.97, stdev=952.92 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 2140], 80.00th=[ 2140], 90.00th=[ 2140], 95.00th=[ 2140], | 99.00th=[ 2140], 99.50th=[ 2140], 99.90th=[ 2140], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 8175, max= 8175, per=97.48%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.95%, ctx=85, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4396KiB/s (4502kB/s), 1099KiB/s-4154KiB/s (1125kB/s-4254kB/s), io=16.0MiB (16.8MB), run=2958-3727msec WRITE: bw=8387KiB/s (8588kB/s), 2198KiB/s-3559KiB/s (2251kB/s-3644kB/s), io=32.0MiB (33.6MB), run=3453-3907msec