== sanity test 398b: DIO and buffer IO race ============== 03:09:55 (1787555395) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.03007 s, 10.0 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179262: Mon Aug 24 03:12:25 2026 read: IOPS=11, BW=46.0KiB/s (47.1kB/s)(5992KiB/130153msec) clat (usec): min=33, max=438987, avg=47755.92, stdev=34082.96 lat (usec): min=33, max=438988, avg=47757.28, stdev=34082.97 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 10290], 10.00th=[ 17171], 20.00th=[ 23462], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 47973], | 70.00th=[ 55837], 80.00th=[ 67634], 90.00th=[ 85459], 95.00th=[103285], | 99.00th=[181404], 99.50th=[208667], 99.90th=[287310], 99.95th=[438305], | 99.99th=[438305] bw ( KiB/s): min= 7, max= 104, per=25.05%, avg=45.85, stdev=18.34, samples=254 iops : min= 1, max= 26, avg=10.84, stdev= 4.64, samples=254 write: IOPS=12, BW=48.4KiB/s (49.5kB/s)(6296KiB/130153msec); 0 zone resets clat (usec): min=846, max=858034, avg=36942.53, stdev=42981.78 lat (usec): min=847, max=858036, avg=36944.91, stdev=42982.26 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1450], 20.00th=[ 3720], | 30.00th=[ 7242], 40.00th=[ 17433], 50.00th=[ 26084], 60.00th=[ 35914], | 70.00th=[ 48497], 80.00th=[ 63177], 90.00th=[ 86508], 95.00th=[113771], | 99.00th=[162530], 99.50th=[193987], 99.90th=[258999], 99.95th=[859833], | 99.99th=[859833] bw ( KiB/s): min= 7, max= 103, per=25.26%, avg=48.25, stdev=20.12, samples=254 iops : min= 1, max= 25, avg=11.43, stdev= 5.06, samples=254 lat (usec) : 50=0.29%, 100=1.66%, 250=0.13%, 750=0.03%, 1000=0.20% lat (msec) : 2=6.61%, 4=4.04%, 10=6.90%, 20=8.89%, 50=37.96% lat (msec) : 100=26.89%, 250=6.22%, 500=0.16%, 1000=0.03% cpu : usr=0.08%, sys=4.83%, ctx=6311, 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=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=179264: Mon Aug 24 03:12:25 2026 read: IOPS=11, BW=45.4KiB/s (46.5kB/s)(5940KiB/130836msec) clat (usec): min=46, max=386658, avg=46925.87, stdev=32686.91 lat (usec): min=47, max=386660, avg=46928.73, stdev=32685.92 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 12780], 10.00th=[ 18220], 20.00th=[ 23725], | 30.00th=[ 28967], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 54789], 80.00th=[ 65799], 90.00th=[ 82314], 95.00th=[103285], | 99.00th=[164627], 99.50th=[200279], 99.90th=[274727], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 6, max= 111, per=24.95%, avg=45.66, stdev=17.76, samples=254 iops : min= 1, max= 27, avg=10.78, stdev= 4.47, samples=254 write: IOPS=12, BW=48.5KiB/s (49.7kB/s)(6348KiB/130836msec); 0 zone resets clat (usec): min=728, max=886525, avg=38237.64, stdev=44033.44 lat (usec): min=729, max=886526, avg=38239.64, stdev=44033.56 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1221], 10.00th=[ 1647], 20.00th=[ 4080], | 30.00th=[ 8848], 40.00th=[ 18220], 50.00th=[ 28967], 60.00th=[ 37487], | 70.00th=[ 49021], 80.00th=[ 65799], 90.00th=[ 86508], 95.00th=[115868], | 99.00th=[170918], 99.50th=[198181], 99.90th=[329253], 99.95th=[884999], | 99.99th=[884999] bw ( KiB/s): min= 6, max= 112, per=25.36%, avg=48.44, stdev=21.78, samples=256 iops : min= 1, max= 28, avg=11.49, stdev= 5.49, samples=256 lat (usec) : 50=0.07%, 100=1.66%, 250=0.13%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=5.92%, 4=4.07%, 10=6.61%, 20=8.72%, 50=39.97% lat (msec) : 100=26.33%, 250=6.05%, 500=0.20%, 1000=0.03% cpu : usr=0.08%, sys=4.83%, ctx=6315, 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=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=179265: Mon Aug 24 03:12:25 2026 read: IOPS=11, BW=46.0KiB/s (47.1kB/s)(6028KiB/130943msec) clat (usec): min=36, max=936626, avg=47098.35, stdev=39382.11 lat (usec): min=37, max=936627, avg=47105.21, stdev=39380.00 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 143], 10.00th=[ 15664], 20.00th=[ 22676], | 30.00th=[ 28181], 40.00th=[ 33424], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 54789], 80.00th=[ 66847], 90.00th=[ 87557], 95.00th=[104334], | 99.00th=[160433], 99.50th=[198181], 99.90th=[233833], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 8, max= 111, per=25.41%, avg=46.50, stdev=18.74, samples=253 iops : min= 2, max= 27, avg=10.99, stdev= 4.72, samples=253 write: IOPS=11, BW=47.8KiB/s (48.0kB/s)(6260KiB/130943msec); 0 zone resets clat (usec): min=778, max=262453, avg=37991.63, stdev=38908.61 lat (usec): min=781, max=262456, avg=38004.38, stdev=38900.69 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1205], 10.00th=[ 1549], 20.00th=[ 4490], | 30.00th=[ 8848], 40.00th=[ 18744], 50.00th=[ 27395], 60.00th=[ 36963], | 70.00th=[ 49021], 80.00th=[ 66847], 90.00th=[ 88605], 95.00th=[113771], | 99.00th=[168821], 99.50th=[191890], 99.90th=[261096], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 7, max= 110, per=24.93%, avg=47.61, stdev=20.46, samples=256 iops : min= 1, max= 27, avg=11.29, stdev= 5.15, samples=256 lat (usec) : 50=0.13%, 100=2.25%, 250=0.20%, 500=0.03%, 1000=0.26% lat (msec) : 2=5.76%, 4=3.58%, 10=7.10%, 20=9.24%, 50=38.61% lat (msec) : 100=26.17%, 250=6.58%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=4.88%, ctx=6373, 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=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=179266: Mon Aug 24 03:12:25 2026 read: IOPS=11, BW=46.7KiB/s (47.8kB/s)(6052KiB/129548msec) clat (usec): min=34, max=937203, avg=47298.37, stdev=38706.38 lat (usec): min=34, max=937204, avg=47300.17, stdev=38706.13 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11731], 10.00th=[ 16909], 20.00th=[ 23725], | 30.00th=[ 28705], 40.00th=[ 33817], 50.00th=[ 40109], 60.00th=[ 46924], | 70.00th=[ 56361], 80.00th=[ 66847], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[141558], 99.50th=[168821], 99.90th=[434111], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 7, max= 95, per=25.49%, avg=46.64, stdev=17.66, samples=253 iops : min= 1, max= 23, avg=11.04, stdev= 4.45, samples=253 write: IOPS=12, BW=48.1KiB/s (49.3kB/s)(6236KiB/129548msec); 0 zone resets clat (usec): min=768, max=256715, avg=36879.98, stdev=38814.07 lat (usec): min=769, max=256717, avg=36881.85, stdev=38814.08 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1172], 10.00th=[ 1352], 20.00th=[ 3916], | 30.00th=[ 7832], 40.00th=[ 16450], 50.00th=[ 26084], 60.00th=[ 35914], | 70.00th=[ 47973], 80.00th=[ 63701], 90.00th=[ 88605], 95.00th=[110625], | 99.00th=[168821], 99.50th=[193987], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 7, max= 128, per=25.13%, avg=47.99, stdev=22.49, samples=253 iops : min= 1, max= 32, avg=11.38, stdev= 5.68, samples=253 lat (usec) : 50=0.33%, 100=1.33%, 250=0.13%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.42% lat (msec) : 2=6.64%, 4=3.32%, 10=6.74%, 20=9.64%, 50=38.80% lat (msec) : 100=25.75%, 250=6.64%, 500=0.13%, 1000=0.03% cpu : usr=0.07%, sys=4.87%, ctx=6331, 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=183KiB/s (188kB/s), 45.4KiB/s-46.7KiB/s (46.5kB/s-47.8kB/s), io=23.4MiB (24.6MB), run=129548-130943msec WRITE: bw=192KiB/s (197kB/s), 47.8KiB/s-48.5KiB/s (48.0kB/s-49.7kB/s), io=24.6MiB (25.7MB), run=129548-130943msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179259: Mon Aug 24 03:13:05 2026 read: IOPS=8, BW=35.3KiB/s (36.1kB/s)(5992KiB/169801msec) clat (msec): min=3, max=957, avg=44.81, stdev=47.10 lat (msec): min=3, max=957, avg=44.82, stdev=47.10 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 48], 80.00th=[ 65], 90.00th=[ 103], 95.00th=[ 136], | 99.00th=[ 192], 99.50th=[ 232], 99.90th=[ 347], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 127, per=25.55%, avg=35.77, stdev=24.61, samples=325 iops : min= 1, max= 31, avg= 8.26, stdev= 6.19, samples=325 write: IOPS=9, BW=37.1KiB/s (37.0kB/s)(6296KiB/169801msec); 0 zone resets clat (msec): min=10, max=423, avg=64.94, stdev=46.63 lat (msec): min=10, max=423, avg=64.95, stdev=46.63 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 75], 80.00th=[ 96], 90.00th=[ 125], 95.00th=[ 163], | 99.00th=[ 230], 99.50th=[ 262], 99.90th=[ 359], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7, max= 126, per=25.16%, avg=36.98, stdev=23.36, samples=330 iops : min= 1, max= 31, avg= 8.57, stdev= 5.87, samples=330 lat (msec) : 4=0.03%, 10=2.77%, 20=14.39%, 50=44.27%, 100=24.28% lat (msec) : 250=13.77%, 500=0.46%, 1000=0.03% cpu : usr=0.06%, sys=1.68%, ctx=4642, 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=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=179260: Mon Aug 24 03:13:05 2026 read: IOPS=8, BW=34.8KiB/s (35.6kB/s)(5940KiB/170860msec) clat (msec): min=4, max=936, avg=44.57, stdev=49.00 lat (msec): min=4, max=936, avg=44.57, stdev=49.00 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 46], 80.00th=[ 65], 90.00th=[ 100], 95.00th=[ 129], | 99.00th=[ 222], 99.50th=[ 259], 99.90th=[ 443], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 142, per=25.66%, avg=35.93, stdev=25.43, samples=320 iops : min= 1, max= 35, avg= 8.31, stdev= 6.40, samples=320 write: IOPS=9, BW=37.2KiB/s (38.0kB/s)(6348KiB/170860msec); 0 zone resets clat (msec): min=9, max=433, avg=65.68, stdev=46.80 lat (msec): min=9, max=433, avg=65.69, stdev=46.80 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 51], 60.00th=[ 61], | 70.00th=[ 77], 80.00th=[ 101], 90.00th=[ 128], 95.00th=[ 161], | 99.00th=[ 224], 99.50th=[ 257], 99.90th=[ 317], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 7, max= 134, per=25.23%, avg=37.09, stdev=23.44, samples=331 iops : min= 1, max= 33, avg= 8.60, stdev= 5.89, samples=331 lat (msec) : 10=2.83%, 20=14.42%, 50=43.95%, 100=23.67%, 250=14.58% lat (msec) : 500=0.52%, 1000=0.03% cpu : usr=0.05%, sys=1.61%, ctx=4617, 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=179261: Mon Aug 24 03:13:05 2026 read: IOPS=8, BW=35.4KiB/s (36.2kB/s)(6028KiB/170509msec) clat (msec): min=5, max=438, avg=44.30, stdev=44.88 lat (msec): min=5, max=438, avg=44.30, stdev=44.88 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 64], 90.00th=[ 101], 95.00th=[ 128], | 99.00th=[ 209], 99.50th=[ 296], 99.90th=[ 388], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 7, max= 127, per=25.50%, avg=35.70, stdev=24.33, samples=328 iops : min= 1, max= 31, avg= 8.26, stdev= 6.12, samples=328 write: IOPS=9, BW=36.7KiB/s (37.6kB/s)(6260KiB/170509msec); 0 zone resets clat (msec): min=11, max=953, avg=66.02, stdev=53.41 lat (msec): min=11, max=953, avg=66.02, stdev=53.41 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 49], 60.00th=[ 59], | 70.00th=[ 73], 80.00th=[ 96], 90.00th=[ 133], 95.00th=[ 163], | 99.00th=[ 251], 99.50th=[ 284], 99.90th=[ 368], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 119, per=24.86%, avg=36.54, stdev=24.38, samples=333 iops : min= 1, max= 29, avg= 8.46, stdev= 6.13, samples=333 lat (msec) : 10=2.54%, 20=14.16%, 50=45.38%, 100=23.40%, 250=13.64% lat (msec) : 500=0.85%, 1000=0.03% cpu : usr=0.05%, sys=1.57%, ctx=4615, 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=179263: Mon Aug 24 03:13:05 2026 read: IOPS=8, BW=35.5KiB/s (36.4kB/s)(6052KiB/170482msec) clat (msec): min=5, max=396, avg=44.33, stdev=43.37 lat (msec): min=5, max=396, avg=44.33, stdev=43.37 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 64], 90.00th=[ 103], 95.00th=[ 136], | 99.00th=[ 199], 99.50th=[ 249], 99.90th=[ 334], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 174, per=25.96%, avg=36.34, stdev=25.33, samples=324 iops : min= 1, max= 43, avg= 8.41, stdev= 6.38, samples=324 write: IOPS=9, BW=36.6KiB/s (37.5kB/s)(6236KiB/170482msec); 0 zone resets clat (msec): min=10, max=933, avg=66.04, stdev=51.57 lat (msec): min=10, max=933, avg=66.05, stdev=51.57 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 77], 80.00th=[ 99], 90.00th=[ 130], 95.00th=[ 161], | 99.00th=[ 232], 99.50th=[ 262], 99.90th=[ 368], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 134, per=24.93%, avg=36.65, stdev=23.89, samples=331 iops : min= 1, max= 33, avg= 8.49, stdev= 6.01, samples=331 lat (msec) : 10=2.47%, 20=14.78%, 50=44.89%, 100=22.92%, 250=14.36% lat (msec) : 500=0.55%, 1000=0.03% cpu : usr=0.06%, sys=1.67%, ctx=4736, 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=141KiB/s (144kB/s), 34.8KiB/s-35.5KiB/s (35.6kB/s-36.4kB/s), io=23.4MiB (24.6MB), run=169801-170860msec WRITE: bw=147KiB/s (151kB/s), 36.6KiB/s-37.2KiB/s (37.5kB/s-38.0kB/s), io=24.6MiB (25.7MB), run=169801-170860msec 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=179313: Mon Aug 24 03:13:52 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(5920KiB/35320msec) clat (usec): min=37, max=233160, avg=51529.28, stdev=35210.97 lat (usec): min=37, max=233162, avg=51530.65, stdev=35210.98 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 68], 10.00th=[ 1844], 20.00th=[ 25822], | 30.00th=[ 32900], 40.00th=[ 39060], 50.00th=[ 45351], 60.00th=[ 53740], | 70.00th=[ 62653], 80.00th=[ 74974], 90.00th=[ 94897], 95.00th=[109577], | 99.00th=[160433], 99.50th=[221250], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 350, per=24.33%, avg=164.99, stdev=61.06, samples=69 iops : min= 1, max= 21, avg= 9.55, stdev= 3.85, samples=69 write: IOPS=11, BW=180KiB/s (185kB/s)(6368KiB/35320msec); 0 zone resets clat (usec): min=1397, max=197488, avg=40101.30, stdev=37901.51 lat (usec): min=1401, max=197490, avg=40106.28, stdev=37900.25 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1991], 10.00th=[ 3359], 20.00th=[ 6980], | 30.00th=[ 11469], 40.00th=[ 19792], 50.00th=[ 28967], 60.00th=[ 41157], | 70.00th=[ 52167], 80.00th=[ 67634], 90.00th=[100140], 95.00th=[117965], | 99.00th=[164627], 99.50th=[179307], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 29, max= 380, per=25.15%, avg=179.30, stdev=75.82, samples=69 iops : min= 1, max= 23, avg=10.45, stdev= 4.83, samples=69 lat (usec) : 50=0.39%, 100=4.04%, 250=0.26% lat (msec) : 2=2.86%, 4=3.26%, 10=7.68%, 20=8.59%, 50=35.68% lat (msec) : 100=28.13%, 250=9.11% cpu : usr=0.07%, sys=5.28%, ctx=1681, 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=179314: Mon Aug 24 03:13:52 2026 read: IOPS=10, BW=164KiB/s (168kB/s)(5744KiB/34960msec) clat (usec): min=55, max=230810, avg=50092.12, stdev=32891.85 lat (usec): min=57, max=230812, avg=50094.15, stdev=32891.83 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 72], 10.00th=[ 17433], 20.00th=[ 25822], | 30.00th=[ 32900], 40.00th=[ 39584], 50.00th=[ 44303], 60.00th=[ 50594], | 70.00th=[ 60031], 80.00th=[ 70779], 90.00th=[ 91751], 95.00th=[109577], | 99.00th=[156238], 99.50th=[196084], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 29, max= 287, per=24.21%, avg=164.16, stdev=66.44, samples=69 iops : min= 1, max= 17, avg= 9.49, stdev= 4.16, samples=69 write: IOPS=11, BW=187KiB/s (192kB/s)(6544KiB/34960msec); 0 zone resets clat (usec): min=1334, max=179780, avg=41023.92, stdev=37457.06 lat (usec): min=1336, max=179782, avg=41029.78, stdev=37460.58 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1893], 10.00th=[ 3195], 20.00th=[ 7046], | 30.00th=[ 14091], 40.00th=[ 21890], 50.00th=[ 30278], 60.00th=[ 41157], | 70.00th=[ 53740], 80.00th=[ 71828], 90.00th=[ 98042], 95.00th=[114820], | 99.00th=[162530], 99.50th=[177210], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 31, max= 408, per=26.17%, avg=186.62, stdev=72.98, samples=69 iops : min= 1, max= 25, avg=10.91, stdev= 4.68, samples=69 lat (usec) : 100=2.99%, 250=0.26% lat (msec) : 2=3.26%, 4=3.65%, 10=7.29%, 20=7.68%, 50=39.06% lat (msec) : 100=28.13%, 250=7.68% cpu : usr=0.07%, sys=5.02%, ctx=1664, 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=179315: Mon Aug 24 03:13:52 2026 read: IOPS=11, BW=182KiB/s (186kB/s)(6256KiB/34456msec) clat (usec): min=51, max=237060, avg=50369.73, stdev=31578.83 lat (usec): min=52, max=237061, avg=50381.08, stdev=31574.16 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 67], 10.00th=[ 15270], 20.00th=[ 26608], | 30.00th=[ 32900], 40.00th=[ 39060], 50.00th=[ 47973], 60.00th=[ 54789], | 70.00th=[ 63177], 80.00th=[ 74974], 90.00th=[ 88605], 95.00th=[104334], | 99.00th=[132645], 99.50th=[202376], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 58, max= 317, per=26.78%, avg=181.59, stdev=57.48, samples=68 iops : min= 3, max= 19, avg=10.59, stdev= 3.64, samples=68 write: IOPS=10, BW=175KiB/s (179kB/s)(6032KiB/34456msec); 0 zone resets clat (usec): min=1329, max=233327, avg=38887.40, stdev=38465.48 lat (usec): min=1331, max=233329, avg=38891.11, stdev=38466.97 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1811], 10.00th=[ 3294], 20.00th=[ 6063], | 30.00th=[ 9503], 40.00th=[ 18220], 50.00th=[ 25822], 60.00th=[ 39060], | 70.00th=[ 50594], 80.00th=[ 67634], 90.00th=[ 88605], 95.00th=[116917], | 99.00th=[177210], 99.50th=[183501], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 447, per=24.46%, avg=174.37, stdev=78.27, samples=68 iops : min= 1, max= 27, avg=10.15, stdev= 4.95, samples=68 lat (usec) : 100=4.30%, 250=0.26% lat (msec) : 2=3.39%, 4=3.39%, 10=8.46%, 20=8.07%, 50=32.29% lat (msec) : 100=33.20%, 250=6.64% cpu : usr=0.10%, sys=5.28%, ctx=1694, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179316: Mon Aug 24 03:13:52 2026 read: IOPS=11, BW=176KiB/s (181kB/s)(6032KiB/34217msec) clat (usec): min=39, max=243977, avg=47626.88, stdev=34160.22 lat (usec): min=39, max=243979, avg=47628.84, stdev=34160.27 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 59], 10.00th=[ 71], 20.00th=[ 21103], | 30.00th=[ 29492], 40.00th=[ 37487], 50.00th=[ 44303], 60.00th=[ 52167], | 70.00th=[ 62129], 80.00th=[ 70779], 90.00th=[ 91751], 95.00th=[105382], | 99.00th=[154141], 99.50th=[166724], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 29, max= 415, per=25.64%, avg=173.82, stdev=69.23, samples=67 iops : min= 1, max= 25, avg=10.10, stdev= 4.38, samples=67 write: IOPS=11, BW=183KiB/s (187kB/s)(6256KiB/34217msec); 0 zone resets clat (usec): min=859, max=260656, avg=40692.78, stdev=42563.08 lat (usec): min=860, max=260657, avg=40706.88, stdev=42559.30 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1876], 10.00th=[ 2737], 20.00th=[ 6325], | 30.00th=[ 9765], 40.00th=[ 16909], 50.00th=[ 26870], 60.00th=[ 39060], | 70.00th=[ 53216], 80.00th=[ 70779], 90.00th=[ 93848], 95.00th=[122160], | 99.00th=[200279], 99.50th=[233833], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 31, max= 539, per=25.43%, avg=181.33, stdev=85.44, samples=67 iops : min= 1, max= 33, avg=10.58, stdev= 5.39, samples=67 lat (usec) : 50=0.91%, 100=5.21%, 250=0.26%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.52% lat (msec) : 2=3.12%, 4=3.26%, 10=9.24%, 20=8.33%, 50=30.99% lat (msec) : 100=30.08%, 250=7.68%, 500=0.13% cpu : usr=0.07%, sys=4.99%, ctx=1588, 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=678KiB/s (694kB/s), 164KiB/s-182KiB/s (168kB/s-186kB/s), io=23.4MiB (24.5MB), run=34217-35320msec WRITE: bw=713KiB/s (731kB/s), 175KiB/s-187KiB/s (179kB/s-192kB/s), io=24.6MiB (25.8MB), run=34217-35320msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179309: Mon Aug 24 03:14:04 2026 read: IOPS=7, BW=125KiB/s (128kB/s)(5920KiB/47266msec) clat (msec): min=6, max=248, avg=47.22, stdev=40.03 lat (msec): min=6, max=248, avg=47.22, stdev=40.03 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 49], 80.00th=[ 70], 90.00th=[ 104], 95.00th=[ 131], | 99.00th=[ 199], 99.50th=[ 224], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 30, max= 447, per=24.79%, avg=125.46, stdev=79.09, samples=91 iops : min= 1, max= 27, avg= 7.07, stdev= 4.99, samples=91 write: IOPS=8, BW=135KiB/s (138kB/s)(6368KiB/47266msec); 0 zone resets clat (msec): min=15, max=289, avg=74.46, stdev=49.73 lat (msec): min=15, max=289, avg=74.46, stdev=49.73 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 70], | 70.00th=[ 89], 80.00th=[ 110], 90.00th=[ 140], 95.00th=[ 184], | 99.00th=[ 239], 99.50th=[ 275], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 352, per=25.01%, avg=133.29, stdev=76.93, samples=93 iops : min= 1, max= 22, avg= 7.56, stdev= 4.91, samples=93 lat (msec) : 10=1.17%, 20=10.29%, 50=44.53%, 100=26.30%, 250=17.45% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=1.52%, ctx=1160, 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=179310: Mon Aug 24 03:14:04 2026 read: IOPS=7, BW=122KiB/s (125kB/s)(5744KiB/47187msec) clat (msec): min=6, max=271, avg=47.91, stdev=42.78 lat (msec): min=6, max=271, avg=47.92, stdev=42.77 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 69], 90.00th=[ 103], 95.00th=[ 140], | 99.00th=[ 226], 99.50th=[ 259], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 30, max= 445, per=24.11%, avg=122.01, stdev=85.20, samples=92 iops : min= 1, max= 27, avg= 6.85, stdev= 5.41, samples=92 write: IOPS=8, BW=139KiB/s (142kB/s)(6544KiB/47187msec); 0 zone resets clat (msec): min=16, max=250, avg=72.76, stdev=47.07 lat (msec): min=16, max=250, avg=72.77, stdev=47.07 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 57], 60.00th=[ 71], | 70.00th=[ 85], 80.00th=[ 109], 90.00th=[ 144], 95.00th=[ 171], | 99.00th=[ 228], 99.50th=[ 230], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 31, max= 383, per=25.77%, avg=137.37, stdev=81.35, samples=93 iops : min= 1, max= 23, avg= 7.82, stdev= 5.16, samples=93 lat (msec) : 10=1.04%, 20=10.94%, 50=43.62%, 100=26.95%, 250=16.93% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.66%, ctx=1198, 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=179311: Mon Aug 24 03:14:04 2026 read: IOPS=8, BW=135KiB/s (138kB/s)(6256KiB/46441msec) clat (msec): min=7, max=269, avg=48.49, stdev=41.12 lat (msec): min=7, max=269, avg=48.50, stdev=41.12 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 52], 80.00th=[ 70], 90.00th=[ 104], 95.00th=[ 140], | 99.00th=[ 209], 99.50th=[ 259], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 441, per=26.93%, avg=136.27, stdev=91.33, samples=90 iops : min= 1, max= 27, avg= 7.73, stdev= 5.78, samples=90 write: IOPS=8, BW=130KiB/s (133kB/s)(6032KiB/46441msec); 0 zone resets clat (msec): min=17, max=245, avg=72.53, stdev=44.05 lat (msec): min=17, max=245, avg=72.54, stdev=44.05 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 49], 50.00th=[ 59], 60.00th=[ 71], | 70.00th=[ 86], 80.00th=[ 110], 90.00th=[ 140], 95.00th=[ 165], | 99.00th=[ 215], 99.50th=[ 222], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 31, max= 349, per=23.92%, avg=127.47, stdev=71.94, samples=91 iops : min= 1, max= 21, avg= 7.18, stdev= 4.55, samples=91 lat (msec) : 10=0.52%, 20=10.94%, 50=43.88%, 100=27.08%, 250=17.32% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=1.51%, ctx=1121, 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=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=179312: Mon Aug 24 03:14:04 2026 read: IOPS=7, BW=128KiB/s (131kB/s)(6032KiB/47218msec) clat (msec): min=6, max=262, avg=50.23, stdev=43.14 lat (msec): min=6, max=262, avg=50.23, stdev=43.15 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 73], 90.00th=[ 111], 95.00th=[ 136], | 99.00th=[ 228], 99.50th=[ 262], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 383, per=26.05%, avg=131.81, stdev=79.19, samples=89 iops : min= 1, max= 23, avg= 7.47, stdev= 5.03, samples=89 write: IOPS=8, BW=132KiB/s (136kB/s)(6256KiB/47218msec); 0 zone resets clat (msec): min=17, max=361, avg=72.16, stdev=51.04 lat (msec): min=17, max=361, avg=72.16, stdev=51.04 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 43], 40.00th=[ 49], 50.00th=[ 57], 60.00th=[ 67], | 70.00th=[ 80], 80.00th=[ 99], 90.00th=[ 144], 95.00th=[ 180], | 99.00th=[ 243], 99.50th=[ 275], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 30, max= 479, per=24.77%, avg=132.02, stdev=78.66, samples=93 iops : min= 1, max= 29, avg= 7.47, stdev= 5.00, samples=93 lat (msec) : 10=0.26%, 20=10.55%, 50=44.01%, 100=29.43%, 250=15.23% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.68%, ctx=1185, 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=507KiB/s (519kB/s), 122KiB/s-135KiB/s (125kB/s-138kB/s), io=23.4MiB (24.5MB), run=46441-47266msec WRITE: bw=533KiB/s (546kB/s), 130KiB/s-139KiB/s (133kB/s-142kB/s), io=24.6MiB (25.8MB), run=46441-47266msec 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=179332: Mon Aug 24 03:14:22 2026 read: IOPS=1, BW=2044KiB/s (2093kB/s)(7168KiB/3507msec) clat (msec): min=2, max=783, avg=237.02, stdev=263.99 lat (msec): min=2, max=783, avg=237.02, stdev=263.99 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 4], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 234], 60.00th=[ 239], | 70.00th=[ 239], 80.00th=[ 259], 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= 1777, max= 4087, per=77.31%, avg=3314.33, stdev=1331.38, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1460KiB/s (1495kB/s)(5120KiB/3507msec); 0 zone resets clat (msec): min=189, max=477, avg=343.17, stdev=107.57 lat (msec): min=189, max=477, avg=343.45, stdev=107.70 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 326], 60.00th=[ 326], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 477], 95.00th=[ 477], | 99.00th=[ 477], 99.50th=[ 477], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 1957, max= 4000, per=44.46%, avg=2668.33, stdev=1154.15, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 4=16.67%, 250=33.33%, 500=41.67%, 1000=8.33% cpu : usr=0.00%, sys=13.01%, ctx=157, 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=179333: Mon Aug 24 03:14:22 2026 read: IOPS=0, BW=429KiB/s (439kB/s)(2048KiB/4777msec) clat (usec): min=899, max=275917, avg=138408.33, stdev=194466.81 lat (usec): min=901, max=275920, avg=138411.01, stdev=194467.22 clat percentiles (usec): | 1.00th=[ 898], 5.00th=[ 898], 10.00th=[ 898], 20.00th=[ 898], | 30.00th=[ 898], 40.00th=[ 898], 50.00th=[ 898], 60.00th=[274727], | 70.00th=[274727], 80.00th=[274727], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 1600, max= 2000, per=41.99%, avg=1800.00, stdev=282.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2144KiB/s (2195kB/s)(10.0MiB/4777msec); 0 zone resets clat (msec): min=182, max=1018, avg=432.81, stdev=269.39 lat (msec): min=182, max=1018, avg=433.33, stdev=269.58 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 213], | 30.00th=[ 239], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 326], | 70.00th=[ 468], 80.00th=[ 584], 90.00th=[ 726], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 1984, max= 6144, per=50.62%, avg=3038.17, stdev=1722.43, samples=6 iops : min= 1, max= 6, avg= 2.17, stdev= 2.04, samples=6 lat (usec) : 1000=8.33% lat (msec) : 250=25.00%, 500=41.67%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=10.68%, ctx=140, 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=179334: Mon Aug 24 03:14:22 2026 read: IOPS=1, BW=1511KiB/s (1548kB/s)(6144KiB/4065msec) clat (usec): min=787, max=348492, avg=144473.30, stdev=141149.82 lat (usec): min=789, max=348494, avg=144474.88, stdev=141149.89 clat percentiles (usec): | 1.00th=[ 791], 5.00th=[ 791], 10.00th=[ 791], 20.00th=[ 2507], | 30.00th=[ 2507], 40.00th=[ 89654], 50.00th=[ 89654], 60.00th=[162530], | 70.00th=[263193], 80.00th=[263193], 90.00th=[350225], 95.00th=[350225], | 99.00th=[350225], 99.50th=[350225], 99.90th=[350225], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 2027, max= 4087, per=78.64%, avg=3371.33, stdev=1165.04, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1511KiB/s (1548kB/s)(6144KiB/4065msec); 0 zone resets clat (msec): min=280, max=976, avg=519.55, stdev=268.80 lat (msec): min=280, max=976, avg=519.62, stdev=268.80 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 600], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 1957, max= 2968, per=37.38%, avg=2243.25, stdev=484.59, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 100=8.33%, 250=8.33%, 500=41.67%, 750=16.67% lat (msec) : 1000=8.33% cpu : usr=0.00%, sys=10.65%, ctx=170, 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=179336: Mon Aug 24 03:14:22 2026 read: IOPS=1, BW=1403KiB/s (1436kB/s)(5120KiB/3650msec) clat (usec): min=531, max=330860, avg=107173.03, stdev=151439.54 lat (usec): min=532, max=330861, avg=107174.24, stdev=151439.79 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 848], 40.00th=[ 848], 50.00th=[ 4424], 60.00th=[ 4424], | 70.00th=[198181], 80.00th=[198181], 90.00th=[329253], 95.00th=[329253], | 99.00th=[329253], 99.50th=[329253], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 7831, max= 7831, per=100.00%, avg=7831.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1964KiB/s (2011kB/s)(7168KiB/3650msec); 0 zone resets clat (msec): min=342, max=622, avg=433.05, stdev=99.53 lat (msec): min=342, max=622, avg=433.38, stdev=99.57 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 355], | 30.00th=[ 380], 40.00th=[ 380], 50.00th=[ 388], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 498], 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= 1715, max= 2048, per=32.97%, avg=1978.67, stdev=130.31, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 10=8.33%, 250=8.33%, 500=58.33%, 750=8.33% cpu : usr=0.00%, sys=11.29%, ctx=121, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4287KiB/s (4390kB/s), 429KiB/s-2044KiB/s (439kB/s-2093kB/s), io=20.0MiB (20.0MB), run=3507-4777msec WRITE: bw=6002KiB/s (6146kB/s), 1460KiB/s-2144KiB/s (1495kB/s-2195kB/s), io=28.0MiB (29.4MB), run=3507-4777msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179335: Mon Aug 24 03:14:22 2026 read: IOPS=1, BW=1663KiB/s (1703kB/s)(7168KiB/4309msec) clat (msec): min=114, max=1027, avg=284.72, stdev=336.84 lat (msec): min=114, max=1027, avg=284.72, stdev=336.84 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 117], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 132], 60.00th=[ 144], | 70.00th=[ 144], 80.00th=[ 334], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 4087, max= 4106, per=100.00%, avg=4096.50, stdev=13.44, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1188KiB/s (1217kB/s)(5120KiB/4309msec); 0 zone resets clat (msec): min=274, max=953, avg=453.17, stdev=281.57 lat (msec): min=274, max=953, avg=454.40, stdev=281.01 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 347], 60.00th=[ 347], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 1988, max= 4087, per=49.37%, avg=2692.67, stdev=1207.55, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=41.67%, 500=41.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.02%, sys=3.85%, ctx=73, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179337: Mon Aug 24 03:14:22 2026 read: IOPS=0, BW=410KiB/s (420kB/s)(2048KiB/4992msec) clat (msec): min=117, max=612, avg=364.84, stdev=350.27 lat (msec): min=117, max=612, avg=364.84, stdev=350.27 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 117], 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= 2003, max= 2043, per=51.94%, avg=2023.00, stdev=28.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2051KiB/s (2101kB/s)(10.0MiB/4992msec); 0 zone resets clat (msec): min=158, max=987, avg=398.35, stdev=250.73 lat (msec): min=158, max=987, avg=398.89, stdev=250.76 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 163], | 30.00th=[ 249], 40.00th=[ 257], 50.00th=[ 338], 60.00th=[ 372], | 70.00th=[ 409], 80.00th=[ 418], 90.00th=[ 642], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 1988, max= 4007, per=48.81%, avg=2662.00, stdev=987.69, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=3.99%, ctx=123, 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=179338: Mon Aug 24 03:14:22 2026 read: IOPS=1, BW=1242KiB/s (1272kB/s)(6144KiB/4945msec) clat (msec): min=104, max=504, avg=250.69, stdev=157.48 lat (msec): min=104, max=504, avg=250.69, stdev=157.48 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 222], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 2003, max= 3864, per=63.78%, avg=2484.25, stdev=919.98, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1242KiB/s (1272kB/s)(6144KiB/4945msec); 0 zone resets clat (msec): min=215, max=800, avg=539.37, stdev=229.02 lat (msec): min=215, max=801, avg=539.54, stdev=229.13 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 558], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1932, max= 2043, per=36.66%, avg=1999.33, stdev=38.37, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=2.87%, ctx=95, 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=179339: Mon Aug 24 03:14:22 2026 read: IOPS=0, BW=974KiB/s (997kB/s)(5120KiB/5257msec) clat (msec): min=53, max=489, avg=267.82, stdev=187.10 lat (msec): min=53, max=489, avg=267.83, stdev=187.10 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 54], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 224], 60.00th=[ 224], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 2027, max= 4007, per=69.17%, avg=2694.00, stdev=1137.14, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1364KiB/s (1396kB/s)(7168KiB/5257msec); 0 zone resets clat (msec): min=84, max=1685, avg=549.08, stdev=574.25 lat (msec): min=84, max=1685, avg=549.30, stdev=574.33 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 93], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 481], 60.00th=[ 535], | 70.00th=[ 535], 80.00th=[ 835], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 1932, max= 6144, per=51.74%, avg=2822.00, stdev=1857.48, samples=5 iops : min= 1, max= 6, avg= 2.00, stdev= 2.24, samples=5 lat (msec) : 100=25.00%, 250=25.00%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=1.94%, ctx=73, 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=3896KiB/s (3989kB/s), 410KiB/s-1663KiB/s (420kB/s-1703kB/s), io=20.0MiB (20.0MB), run=4309-5257msec WRITE: bw=5454KiB/s (5585kB/s), 1188KiB/s-2051KiB/s (1217kB/s-2101kB/s), io=28.0MiB (29.4MB), run=4309-5257msec 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=179345: Mon Aug 24 03:14:39 2026 read: IOPS=0, BW=3641KiB/s (3728kB/s)(12.0MiB/3375msec) clat (msec): min=753, max=1411, avg=1071.03, stdev=329.64 lat (msec): min=753, max=1411, avg=1071.03, stdev=329.64 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 1045], 50.00th=[ 1045], 60.00th=[ 1045], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7922, max= 8159, per=100.00%, avg=8040.50, stdev=167.58, 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=2.76%, ctx=43, 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=179346: Mon Aug 24 03:14:39 2026 read: IOPS=0, BW=2070KiB/s (2119kB/s)(4096KiB/1979msec) clat (nsec): min=516762k, max=516762k, avg=516762225.00, stdev= 0.00 lat (nsec): min=516766k, max=516766k, avg=516766228.00, stdev= 0.00 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=[ 518], | 70.00th=[ 518], 80.00th=[ 518], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] 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=1, BW=4139KiB/s (4239kB/s)(8192KiB/1979msec); 0 zone resets clat (msec): min=640, max=652, avg=646.77, stdev= 8.34 lat (msec): min=641, max=652, avg=647.26, stdev= 8.11 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=[ 651], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 8015, max= 8015, per=91.78%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=5.51%, ctx=69, 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=179347: Mon Aug 24 03:14:39 2026 write: IOPS=0, BW=3275KiB/s (3354kB/s)(12.0MiB/3752msec); 0 zone resets clat (msec): min=350, max=1739, avg=1175.41, stdev=730.39 lat (msec): min=352, max=1740, avg=1176.43, stdev=729.75 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 1435], 50.00th=[ 1435], 60.00th=[ 1435], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 8159, max= 8175, per=93.52%, avg=8167.00, stdev=11.31, 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=2.32%, ctx=47, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179348: Mon Aug 24 03:14:39 2026 write: IOPS=0, BW=3612KiB/s (3699kB/s)(12.0MiB/3402msec); 0 zone resets clat (msec): min=246, max=2510, avg=1064.00, stdev=1256.12 lat (msec): min=248, max=2510, avg=1066.08, stdev=1254.93 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 435], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 2500], 80.00th=[ 2500], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min=16253, max=16253, per=100.00%, avg=16253.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.82%, ctx=50, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4855KiB/s (4971kB/s), 2070KiB/s-3641KiB/s (2119kB/s-3728kB/s), io=16.0MiB (16.8MB), run=1979-3375msec WRITE: bw=8733KiB/s (8943kB/s), 3275KiB/s-4139KiB/s (3354kB/s-4239kB/s), io=32.0MiB (33.6MB), run=1979-3752msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179350: Mon Aug 24 03:14:40 2026 read: IOPS=1, BW=4501KiB/s (4609kB/s)(12.0MiB/2730msec) clat (msec): min=760, max=928, avg=866.90, stdev=92.83 lat (msec): min=760, max=928, avg=866.90, stdev=92.83 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=10.15%, ctx=234, 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=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=179351: Mon Aug 24 03:14:40 2026 read: IOPS=0, BW=1260KiB/s (1291kB/s)(4096KiB/3250msec) clat (nsec): min=777835k, max=777835k, avg=777835164.00, stdev= 0.00 lat (nsec): min=777838k, max=777838k, avg=777837946.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2521KiB/s (2581kB/s)(8192KiB/3250msec); 0 zone resets clat (msec): min=920, max=1411, avg=1165.63, stdev=347.31 lat (msec): min=920, max=1411, avg=1166.05, stdev=347.45 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 1418], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7907, max= 7907, per=88.01%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.48%, ctx=131, 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=179352: Mon Aug 24 03:14:40 2026 write: IOPS=0, BW=3369KiB/s (3450kB/s)(12.0MiB/3647msec); 0 zone resets clat (msec): min=146, max=2183, avg=1132.78, stdev=1020.26 lat (msec): min=146, max=2184, avg=1133.32, stdev=1020.36 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 1070], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7907, max= 7907, per=88.01%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.05%, sys=2.93%, ctx=40, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=179354: Mon Aug 24 03:14:40 2026 write: IOPS=0, BW=3864KiB/s (3957kB/s)(12.0MiB/3180msec); 0 zone resets clat (msec): min=790, max=1308, avg=1015.16, stdev=265.88 lat (msec): min=791, max=1309, avg=1015.82, stdev=265.71 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7907, max= 8143, per=89.33%, avg=8025.00, stdev=166.88, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.09%, sys=2.96%, ctx=40, 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=5041KiB/s (5162kB/s), 1260KiB/s-4501KiB/s (1291kB/s-4609kB/s), io=16.0MiB (16.8MB), run=2730-3250msec WRITE: bw=8985KiB/s (9201kB/s), 2521KiB/s-3864KiB/s (2581kB/s-3957kB/s), io=32.0MiB (33.6MB), run=3180-3647msec