== sanity test 398b: DIO and buffer IO race ============== 10:34:21 (1786804461) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.92248 s, 10.2 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=174665: Sat Aug 15 10:36:47 2026 read: IOPS=11, BW=47.7KiB/s (48.8kB/s)(5992KiB/125652msec) clat (usec): min=32, max=580544, avg=41134.05, stdev=32121.15 lat (usec): min=32, max=580545, avg=41135.45, stdev=32121.46 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 60], 10.00th=[ 11994], 20.00th=[ 20317], | 30.00th=[ 25035], 40.00th=[ 29754], 50.00th=[ 35390], 60.00th=[ 41681], | 70.00th=[ 49546], 80.00th=[ 60556], 90.00th=[ 77071], 95.00th=[ 92799], | 99.00th=[141558], 99.50th=[196084], 99.90th=[278922], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 6, max= 101, per=25.27%, avg=47.77, stdev=19.07, samples=245 iops : min= 1, max= 25, avg=11.31, stdev= 4.79, samples=245 write: IOPS=12, BW=50.1KiB/s (51.3kB/s)(6296KiB/125652msec); 0 zone resets clat (usec): min=1153, max=456369, avg=40572.72, stdev=41071.37 lat (usec): min=1154, max=456370, avg=40575.16, stdev=41070.90 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1532], 10.00th=[ 2671], 20.00th=[ 5604], | 30.00th=[ 10683], 40.00th=[ 20579], 50.00th=[ 29230], 60.00th=[ 40633], | 70.00th=[ 51119], 80.00th=[ 68682], 90.00th=[ 92799], 95.00th=[121111], | 99.00th=[168821], 99.50th=[212861], 99.90th=[274727], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 7, max= 109, per=25.23%, avg=49.96, stdev=19.92, samples=246 iops : min= 1, max= 27, avg=11.86, stdev= 5.01, samples=246 lat (usec) : 50=0.42%, 100=3.29%, 250=0.36%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=3.74%, 4=4.04%, 10=7.36%, 20=10.25%, 50=39.88% lat (msec) : 100=24.77%, 250=5.53%, 500=0.13%, 750=0.03% cpu : usr=0.06%, sys=5.76%, ctx=6820, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174666: Sat Aug 15 10:36:47 2026 read: IOPS=11, BW=47.6KiB/s (48.7kB/s)(5940KiB/124855msec) clat (usec): min=30, max=302644, avg=40364.48, stdev=29741.75 lat (usec): min=30, max=302644, avg=40366.24, stdev=29741.77 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 61], 10.00th=[ 9765], 20.00th=[ 18744], | 30.00th=[ 24249], 40.00th=[ 28967], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 49021], 80.00th=[ 58983], 90.00th=[ 76022], 95.00th=[ 94897], | 99.00th=[127402], 99.50th=[147850], 99.90th=[295699], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 6, max= 96, per=25.08%, avg=47.41, stdev=18.94, samples=244 iops : min= 1, max= 24, avg=11.21, stdev= 4.74, samples=244 write: IOPS=12, BW=50.8KiB/s (52.1kB/s)(6348KiB/124855msec); 0 zone resets clat (usec): min=1153, max=368934, avg=40799.51, stdev=42018.32 lat (usec): min=1154, max=368935, avg=40807.41, stdev=42016.07 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1418], 10.00th=[ 2278], 20.00th=[ 5080], | 30.00th=[ 9634], 40.00th=[ 20317], 50.00th=[ 31065], 60.00th=[ 40633], | 70.00th=[ 53216], 80.00th=[ 68682], 90.00th=[ 94897], 95.00th=[116917], | 99.00th=[166724], 99.50th=[227541], 99.90th=[362808], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 7, max= 127, per=25.43%, avg=50.36, stdev=21.59, samples=245 iops : min= 1, max= 31, avg=11.96, stdev= 5.43, samples=245 lat (usec) : 50=0.68%, 100=3.03%, 250=0.52%, 500=0.07%, 750=0.07% lat (msec) : 2=4.69%, 4=3.68%, 10=7.91%, 20=10.81%, 50=37.99% lat (msec) : 100=23.93%, 250=6.35%, 500=0.29% cpu : usr=0.07%, sys=5.60%, ctx=6737, 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=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=174667: Sat Aug 15 10:36:47 2026 read: IOPS=12, BW=48.5KiB/s (49.7kB/s)(6028KiB/124290msec) clat (usec): min=36, max=397614, avg=40305.84, stdev=30045.06 lat (usec): min=36, max=397616, avg=40307.23, stdev=30045.03 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 12125], 20.00th=[ 19792], | 30.00th=[ 25035], 40.00th=[ 29754], 50.00th=[ 34341], 60.00th=[ 40633], | 70.00th=[ 47973], 80.00th=[ 59507], 90.00th=[ 73925], 95.00th=[ 89654], | 99.00th=[132645], 99.50th=[162530], 99.90th=[362808], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 7, max= 103, per=25.49%, avg=48.18, stdev=19.70, samples=244 iops : min= 1, max= 25, avg=11.42, stdev= 4.94, samples=244 write: IOPS=12, BW=50.4KiB/s (51.6kB/s)(6260KiB/124290msec); 0 zone resets clat (usec): min=1161, max=422974, avg=40490.30, stdev=41901.33 lat (usec): min=1162, max=422975, avg=40501.93, stdev=41919.31 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1434], 10.00th=[ 2311], 20.00th=[ 5276], | 30.00th=[ 9241], 40.00th=[ 19006], 50.00th=[ 30540], 60.00th=[ 40633], | 70.00th=[ 52691], 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[120062], | 99.00th=[175113], 99.50th=[204473], 99.90th=[358613], 99.95th=[421528], | 99.99th=[421528] bw ( KiB/s): min= 7, max= 103, per=25.17%, avg=49.84, stdev=19.19, samples=245 iops : min= 1, max= 25, avg=11.84, stdev= 4.83, samples=245 lat (usec) : 50=0.49%, 100=3.12%, 250=0.33%, 500=0.07% lat (msec) : 2=4.79%, 4=3.74%, 10=7.75%, 20=10.58%, 50=39.13% lat (msec) : 100=24.22%, 250=5.60%, 500=0.20% cpu : usr=0.07%, sys=5.65%, ctx=6763, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174668: Sat Aug 15 10:36:47 2026 read: IOPS=11, BW=47.8KiB/s (48.9kB/s)(6052KiB/126657msec) clat (usec): min=33, max=366606, avg=41204.78, stdev=30689.46 lat (usec): min=33, max=366608, avg=41214.42, stdev=30690.51 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 58], 10.00th=[ 7832], 20.00th=[ 19006], | 30.00th=[ 24249], 40.00th=[ 29492], 50.00th=[ 34866], 60.00th=[ 42730], | 70.00th=[ 50070], 80.00th=[ 61604], 90.00th=[ 80217], 95.00th=[ 93848], | 99.00th=[133694], 99.50th=[173016], 99.90th=[231736], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 7, max= 120, per=25.18%, avg=47.59, stdev=20.17, samples=248 iops : min= 1, max= 30, avg=11.27, stdev= 5.07, samples=248 write: IOPS=12, BW=49.2KiB/s (50.4kB/s)(6236KiB/126657msec); 0 zone resets clat (usec): min=907, max=365097, avg=41144.26, stdev=40791.13 lat (usec): min=907, max=365098, avg=41146.52, stdev=40793.33 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1500], 10.00th=[ 2704], 20.00th=[ 5538], | 30.00th=[ 10028], 40.00th=[ 20841], 50.00th=[ 31065], 60.00th=[ 41681], | 70.00th=[ 56886], 80.00th=[ 70779], 90.00th=[ 93848], 95.00th=[112722], | 99.00th=[179307], 99.50th=[229639], 99.90th=[278922], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 6, max= 117, per=24.55%, avg=48.60, stdev=19.68, samples=250 iops : min= 1, max= 29, avg=11.52, stdev= 4.97, samples=250 lat (usec) : 50=0.65%, 100=3.81%, 250=0.29%, 500=0.03%, 1000=0.03% lat (msec) : 2=3.68%, 4=3.84%, 10=7.98%, 20=10.12%, 50=37.76% lat (msec) : 100=25.98%, 250=5.63%, 500=0.20% cpu : usr=0.06%, sys=5.69%, ctx=6963, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=190KiB/s (194kB/s), 47.6KiB/s-48.5KiB/s (48.7kB/s-49.7kB/s), io=23.4MiB (24.6MB), run=124290-126657msec WRITE: bw=198KiB/s (203kB/s), 49.2KiB/s-50.8KiB/s (50.4kB/s-52.1kB/s), io=24.6MiB (25.7MB), run=124290-126657msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174660: Sat Aug 15 10:38:48 2026 read: IOPS=6, BW=24.2KiB/s (24.8kB/s)(5992KiB/247831msec) clat (msec): min=5, max=1301, avg=35.46, stdev=47.35 lat (msec): min=5, max=1301, avg=35.46, stdev=47.35 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 73], 95.00th=[ 101], | 99.00th=[ 174], 99.50th=[ 232], 99.90th=[ 418], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 104, per=27.47%, avg=26.37, stdev=18.27, samples=440 iops : min= 1, max= 26, avg= 5.97, stdev= 4.61, samples=440 write: IOPS=6, BW=25.4KiB/s (26.0kB/s)(6296KiB/247831msec); 0 zone resets clat (msec): min=38, max=449, avg=123.39, stdev=61.25 lat (msec): min=38, max=449, avg=123.40, stdev=61.24 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 74], | 30.00th=[ 85], 40.00th=[ 96], 50.00th=[ 107], 60.00th=[ 120], | 70.00th=[ 138], 80.00th=[ 167], 90.00th=[ 209], 95.00th=[ 251], | 99.00th=[ 326], 99.50th=[ 355], 99.90th=[ 405], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 7, max= 56, per=25.20%, avg=25.20, stdev=11.73, samples=483 iops : min= 1, max= 14, avg= 5.67, stdev= 2.98, samples=483 lat (msec) : 10=4.04%, 20=15.98%, 50=20.61%, 100=28.45%, 250=28.16% lat (msec) : 500=2.73%, 2000=0.03% cpu : usr=0.04%, sys=1.53%, ctx=5464, 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=174661: Sat Aug 15 10:38:48 2026 read: IOPS=5, BW=23.9KiB/s (24.4kB/s)(5940KiB/248948msec) clat (msec): min=5, max=918, avg=35.09, stdev=40.08 lat (msec): min=5, max=918, avg=35.10, stdev=40.08 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 48], 90.00th=[ 72], 95.00th=[ 96], | 99.00th=[ 165], 99.50th=[ 194], 99.90th=[ 409], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 95, per=27.99%, avg=26.87, stdev=17.77, samples=428 iops : min= 1, max= 23, avg= 6.09, stdev= 4.45, samples=428 write: IOPS=6, BW=25.5KiB/s (26.1kB/s)(6348KiB/248948msec); 0 zone resets clat (msec): min=32, max=508, avg=123.71, stdev=64.24 lat (msec): min=32, max=508, avg=123.71, stdev=64.24 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 74], | 30.00th=[ 85], 40.00th=[ 93], 50.00th=[ 105], 60.00th=[ 118], | 70.00th=[ 138], 80.00th=[ 165], 90.00th=[ 213], 95.00th=[ 251], | 99.00th=[ 334], 99.50th=[ 405], 99.90th=[ 506], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 7, max= 63, per=25.34%, avg=25.34, stdev=12.21, samples=484 iops : min= 1, max= 15, avg= 5.71, stdev= 3.11, samples=484 lat (msec) : 10=3.78%, 20=15.92%, 50=20.54%, 100=30.01%, 250=27.02% lat (msec) : 500=2.64%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.52%, ctx=5598, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174662: Sat Aug 15 10:38:48 2026 read: IOPS=6, BW=24.4KiB/s (24.9kB/s)(6028KiB/247420msec) clat (msec): min=5, max=328, avg=36.51, stdev=35.09 lat (msec): min=5, max=328, avg=36.51, stdev=35.09 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 53], 90.00th=[ 79], 95.00th=[ 101], | 99.00th=[ 178], 99.50th=[ 234], 99.90th=[ 284], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 7, max= 95, per=27.40%, avg=26.30, stdev=17.85, samples=444 iops : min= 1, max= 23, avg= 5.95, stdev= 4.48, samples=444 write: IOPS=6, BW=25.3KiB/s (25.9kB/s)(6260KiB/247420msec); 0 zone resets clat (msec): min=36, max=1024, avg=122.62, stdev=65.20 lat (msec): min=36, max=1024, avg=122.62, stdev=65.20 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 75], | 30.00th=[ 84], 40.00th=[ 94], 50.00th=[ 105], 60.00th=[ 117], | 70.00th=[ 138], 80.00th=[ 165], 90.00th=[ 209], 95.00th=[ 245], | 99.00th=[ 338], 99.50th=[ 384], 99.90th=[ 506], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 56, per=24.87%, avg=24.87, stdev=12.28, samples=486 iops : min= 1, max= 14, avg= 5.59, stdev= 3.14, samples=486 lat (msec) : 10=3.68%, 20=15.14%, 50=20.96%, 100=30.63%, 250=27.31% lat (msec) : 500=2.21%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.54%, ctx=5638, 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=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=174663: Sat Aug 15 10:38:48 2026 read: IOPS=6, BW=24.4KiB/s (24.9kB/s)(6052KiB/248435msec) clat (msec): min=5, max=288, avg=34.60, stdev=34.67 lat (msec): min=5, max=288, avg=34.60, stdev=34.68 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 72], 95.00th=[ 104], | 99.00th=[ 180], 99.50th=[ 243], 99.90th=[ 284], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 7, max= 119, per=28.09%, avg=26.97, stdev=17.69, samples=435 iops : min= 1, max= 29, avg= 6.12, stdev= 4.45, samples=435 write: IOPS=6, BW=25.1KiB/s (25.7kB/s)(6236KiB/248435msec); 0 zone resets clat (msec): min=35, max=1023, avg=125.46, stdev=67.75 lat (msec): min=35, max=1023, avg=125.47, stdev=67.75 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 75], | 30.00th=[ 86], 40.00th=[ 97], 50.00th=[ 109], 60.00th=[ 122], | 70.00th=[ 138], 80.00th=[ 167], 90.00th=[ 211], 95.00th=[ 257], | 99.00th=[ 355], 99.50th=[ 397], 99.90th=[ 514], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 56, per=24.71%, avg=24.71, stdev=11.77, samples=487 iops : min= 1, max= 14, avg= 5.55, stdev= 3.00, samples=487 lat (msec) : 10=4.13%, 20=16.70%, 50=20.21%, 100=27.44%, 250=28.52% lat (msec) : 500=2.90%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.49%, ctx=5534, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=96.5KiB/s (98.8kB/s), 23.9KiB/s-24.4KiB/s (24.4kB/s-24.9kB/s), io=23.4MiB (24.6MB), run=247420-248948msec WRITE: bw=101KiB/s (103kB/s), 25.1KiB/s-25.5KiB/s (25.7kB/s-26.1kB/s), io=24.6MiB (25.7MB), run=247420-248948msec 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=174724: Sat Aug 15 10:39:20 2026 read: IOPS=16, BW=264KiB/s (271kB/s)(5920KiB/22404msec) clat (usec): min=39, max=263160, avg=30552.10, stdev=24684.81 lat (usec): min=39, max=263162, avg=30555.11, stdev=24684.42 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 61], 10.00th=[ 74], 20.00th=[ 12780], | 30.00th=[ 21365], 40.00th=[ 26608], 50.00th=[ 29754], 60.00th=[ 32900], | 70.00th=[ 37487], 80.00th=[ 44303], 90.00th=[ 55313], 95.00th=[ 60031], | 99.00th=[116917], 99.50th=[166724], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 63, max= 476, per=24.81%, avg=265.02, stdev=102.84, samples=44 iops : min= 3, max= 29, avg=15.77, stdev= 6.47, samples=44 write: IOPS=17, BW=284KiB/s (291kB/s)(6368KiB/22404msec); 0 zone resets clat (usec): min=1607, max=218717, avg=27454.90, stdev=29822.58 lat (usec): min=1609, max=218737, avg=27458.63, stdev=29825.28 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2147], 10.00th=[ 3195], 20.00th=[ 4686], | 30.00th=[ 6783], 40.00th=[ 9896], 50.00th=[ 16909], 60.00th=[ 25560], | 70.00th=[ 33817], 80.00th=[ 47449], 90.00th=[ 68682], 95.00th=[ 82314], | 99.00th=[154141], 99.50th=[175113], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 27, max= 510, per=25.42%, avg=285.52, stdev=103.51, samples=44 iops : min= 1, max= 31, avg=17.07, stdev= 6.53, samples=44 lat (usec) : 50=0.78%, 100=5.99%, 250=1.04%, 500=0.26%, 750=0.26% lat (usec) : 1000=0.39% lat (msec) : 2=2.21%, 4=6.38%, 10=13.02%, 20=10.81%, 50=42.84% lat (msec) : 100=13.80%, 250=2.08%, 500=0.13% cpu : usr=0.08%, sys=8.32%, ctx=1622, 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=174725: Sat Aug 15 10:39:20 2026 read: IOPS=16, BW=256KiB/s (262kB/s)(5744KiB/22420msec) clat (usec): min=37, max=157453, avg=32293.15, stdev=22787.91 lat (usec): min=38, max=157454, avg=32294.40, stdev=22787.90 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 92], 20.00th=[ 16450], | 30.00th=[ 20317], 40.00th=[ 25297], 50.00th=[ 31065], 60.00th=[ 35914], | 70.00th=[ 41681], 80.00th=[ 46924], 90.00th=[ 55313], 95.00th=[ 69731], | 99.00th=[117965], 99.50th=[132645], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 28, max= 415, per=23.91%, avg=255.39, stdev=89.66, samples=44 iops : min= 1, max= 25, avg=15.18, stdev= 5.62, samples=44 write: IOPS=18, BW=292KiB/s (299kB/s)(6544KiB/22420msec); 0 zone resets clat (usec): min=1579, max=226103, avg=25993.20, stdev=28949.94 lat (usec): min=1581, max=226105, avg=26009.89, stdev=28957.96 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2507], 10.00th=[ 3195], 20.00th=[ 5014], | 30.00th=[ 6980], 40.00th=[ 10028], 50.00th=[ 15008], 60.00th=[ 23462], | 70.00th=[ 32637], 80.00th=[ 43254], 90.00th=[ 62129], 95.00th=[ 78119], | 99.00th=[147850], 99.50th=[156238], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 94, max= 531, per=26.06%, avg=292.68, stdev=113.58, samples=44 iops : min= 5, max= 33, avg=17.55, stdev= 7.14, samples=44 lat (usec) : 50=0.39%, 100=4.43%, 250=1.04%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.39% lat (msec) : 2=1.56%, 4=6.77%, 10=13.41%, 20=14.45%, 50=42.84% lat (msec) : 100=12.24%, 250=2.21% cpu : usr=0.08%, sys=8.49%, ctx=1617, 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=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=174726: Sat Aug 15 10:39:20 2026 read: IOPS=17, BW=288KiB/s (295kB/s)(6256KiB/21731msec) clat (usec): min=33, max=180135, avg=30043.18, stdev=24801.61 lat (usec): min=33, max=180136, avg=30044.41, stdev=24801.68 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 55], 10.00th=[ 65], 20.00th=[ 1172], | 30.00th=[ 19792], 40.00th=[ 23987], 50.00th=[ 27132], 60.00th=[ 32113], | 70.00th=[ 36963], 80.00th=[ 47449], 90.00th=[ 57410], 95.00th=[ 64226], | 99.00th=[139461], 99.50th=[160433], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 94, max= 690, per=26.89%, avg=287.21, stdev=115.34, samples=42 iops : min= 5, max= 43, avg=17.21, stdev= 7.30, samples=42 write: IOPS=17, BW=278KiB/s (284kB/s)(6032KiB/21731msec); 0 zone resets clat (usec): min=1633, max=218924, avg=26234.48, stdev=27825.87 lat (usec): min=1634, max=218926, avg=26241.90, stdev=27832.13 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2573], 10.00th=[ 3195], 20.00th=[ 4948], | 30.00th=[ 7242], 40.00th=[ 11076], 50.00th=[ 17957], 60.00th=[ 25035], | 70.00th=[ 32113], 80.00th=[ 43779], 90.00th=[ 60556], 95.00th=[ 84411], | 99.00th=[135267], 99.50th=[147850], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 127, max= 479, per=24.35%, avg=273.40, stdev=91.80, samples=42 iops : min= 7, max= 29, avg=16.31, stdev= 5.84, samples=42 lat (usec) : 50=1.56%, 100=6.77%, 250=1.43%, 500=0.26%, 1000=0.13% lat (msec) : 2=1.69%, 4=6.51%, 10=10.94%, 20=12.89%, 50=40.89% lat (msec) : 100=15.23%, 250=1.69% cpu : usr=0.07%, sys=8.25%, ctx=1645, 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=174727: Sat Aug 15 10:39:20 2026 read: IOPS=17, BW=279KiB/s (285kB/s)(6032KiB/21651msec) clat (usec): min=37, max=173284, avg=29904.19, stdev=23950.36 lat (usec): min=37, max=173285, avg=29905.34, stdev=23950.39 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 59], 10.00th=[ 64], 20.00th=[ 10552], | 30.00th=[ 18744], 40.00th=[ 24773], 50.00th=[ 28705], 60.00th=[ 33162], | 70.00th=[ 37487], 80.00th=[ 44303], 90.00th=[ 55313], 95.00th=[ 67634], | 99.00th=[116917], 99.50th=[162530], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 28, max= 505, per=26.05%, avg=278.19, stdev=100.23, samples=42 iops : min= 1, max= 31, avg=16.62, stdev= 6.34, samples=42 write: IOPS=18, BW=289KiB/s (296kB/s)(6256KiB/21651msec); 0 zone resets clat (usec): min=1606, max=235587, avg=26004.18, stdev=28358.23 lat (usec): min=1607, max=235589, avg=26009.40, stdev=28359.82 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2212], 10.00th=[ 2966], 20.00th=[ 4817], | 30.00th=[ 6980], 40.00th=[ 10814], 50.00th=[ 15401], 60.00th=[ 22938], | 70.00th=[ 31851], 80.00th=[ 43254], 90.00th=[ 64226], 95.00th=[ 79168], | 99.00th=[127402], 99.50th=[170918], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 112, max= 604, per=25.83%, avg=290.02, stdev=92.69, samples=42 iops : min= 7, max= 37, avg=17.38, stdev= 5.76, samples=42 lat (usec) : 50=1.30%, 100=6.77%, 250=0.65%, 500=0.26%, 1000=0.13% lat (msec) : 2=1.95%, 4=6.38%, 10=11.46%, 20=15.36%, 50=40.62% lat (msec) : 100=13.41%, 250=1.69% cpu : usr=0.05%, sys=8.55%, ctx=1634, 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=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=1068KiB/s (1094kB/s), 256KiB/s-288KiB/s (262kB/s-295kB/s), io=23.4MiB (24.5MB), run=21651-22420msec WRITE: bw=1124KiB/s (1151kB/s), 278KiB/s-292KiB/s (284kB/s-299kB/s), io=24.6MiB (25.8MB), run=21651-22420msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174719: Sat Aug 15 10:39:55 2026 read: IOPS=6, BW=105KiB/s (107kB/s)(5920KiB/56472msec) clat (msec): min=6, max=198, avg=33.09, stdev=27.56 lat (msec): min=6, max=198, avg=33.09, stdev=27.56 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 46], 90.00th=[ 68], 95.00th=[ 94], | 99.00th=[ 146], 99.50th=[ 165], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 31, max= 411, per=26.07%, avg=108.44, stdev=66.00, samples=108 iops : min= 1, max= 25, avg= 6.01, stdev= 4.23, samples=108 write: IOPS=7, BW=113KiB/s (115kB/s)(6368KiB/56472msec); 0 zone resets clat (msec): min=41, max=252, avg=110.71, stdev=38.72 lat (msec): min=41, max=252, avg=110.72, stdev=38.73 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 68], 20.00th=[ 79], | 30.00th=[ 86], 40.00th=[ 93], 50.00th=[ 103], 60.00th=[ 113], | 70.00th=[ 126], 80.00th=[ 142], 90.00th=[ 167], 95.00th=[ 188], | 99.00th=[ 226], 99.50th=[ 249], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 29, max= 224, per=25.64%, avg=112.29, stdev=39.96, samples=112 iops : min= 1, max= 14, avg= 6.24, stdev= 2.56, samples=112 lat (msec) : 10=2.34%, 20=16.80%, 50=21.35%, 100=30.60%, 250=28.78% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=1.74%, ctx=1413, 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=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=174720: Sat Aug 15 10:39:55 2026 read: IOPS=6, BW=99.9KiB/s (102kB/s)(5744KiB/57517msec) clat (msec): min=6, max=201, avg=33.19, stdev=31.25 lat (msec): min=6, max=201, avg=33.19, stdev=31.25 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 44], 90.00th=[ 63], 95.00th=[ 97], | 99.00th=[ 190], 99.50th=[ 197], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 29, max= 350, per=26.29%, avg=109.35, stdev=69.36, samples=104 iops : min= 1, max= 21, avg= 6.07, stdev= 4.37, samples=104 write: IOPS=7, BW=114KiB/s (117kB/s)(6544KiB/57517msec); 0 zone resets clat (msec): min=45, max=368, avg=111.34, stdev=41.51 lat (msec): min=45, max=368, avg=111.35, stdev=41.51 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 59], 10.00th=[ 67], 20.00th=[ 79], | 30.00th=[ 86], 40.00th=[ 97], 50.00th=[ 106], 60.00th=[ 115], | 70.00th=[ 127], 80.00th=[ 140], 90.00th=[ 159], 95.00th=[ 180], | 99.00th=[ 268], 99.50th=[ 288], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 31, max= 224, per=26.04%, avg=114.05, stdev=40.86, samples=113 iops : min= 1, max= 14, avg= 6.36, stdev= 2.67, samples=113 lat (msec) : 10=2.86%, 20=16.93%, 50=20.05%, 100=27.73%, 250=31.77% lat (msec) : 500=0.65% cpu : usr=0.04%, sys=1.75%, ctx=1369, 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=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=174721: Sat Aug 15 10:39:55 2026 read: IOPS=7, BW=114KiB/s (116kB/s)(6256KiB/55033msec) clat (msec): min=7, max=183, avg=29.28, stdev=24.67 lat (msec): min=7, max=183, avg=29.29, stdev=24.67 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 22], 60.00th=[ 25], | 70.00th=[ 28], 80.00th=[ 38], 90.00th=[ 57], 95.00th=[ 84], | 99.00th=[ 125], 99.50th=[ 163], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 31, max= 447, per=28.65%, avg=119.17, stdev=82.00, samples=104 iops : min= 1, max= 27, avg= 6.66, stdev= 5.20, samples=104 write: IOPS=6, BW=110KiB/s (112kB/s)(6032KiB/55033msec); 0 zone resets clat (msec): min=47, max=323, avg=114.95, stdev=46.48 lat (msec): min=47, max=323, avg=114.96, stdev=46.48 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 68], 20.00th=[ 80], | 30.00th=[ 89], 40.00th=[ 94], 50.00th=[ 104], 60.00th=[ 113], | 70.00th=[ 127], 80.00th=[ 144], 90.00th=[ 184], 95.00th=[ 215], | 99.00th=[ 271], 99.50th=[ 300], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 191, per=24.87%, avg=108.93, stdev=36.47, samples=109 iops : min= 1, max= 11, avg= 6.03, stdev= 2.32, samples=109 lat (msec) : 10=2.99%, 20=20.18%, 50=21.61%, 100=27.73%, 250=26.56% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=1.96%, ctx=1442, 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=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=174723: Sat Aug 15 10:39:55 2026 read: IOPS=6, BW=108KiB/s (110kB/s)(6032KiB/55974msec) clat (msec): min=9, max=179, avg=32.09, stdev=26.43 lat (msec): min=9, max=179, avg=32.10, stdev=26.42 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 44], 90.00th=[ 60], 95.00th=[ 90], | 99.00th=[ 142], 99.50th=[ 169], 99.90th=[ 180], 99.95th=[ 180], | 99.99th=[ 180] bw ( KiB/s): min= 31, max= 349, per=27.06%, avg=112.57, stdev=62.25, samples=105 iops : min= 1, max= 21, avg= 6.26, stdev= 3.90, samples=105 write: IOPS=6, BW=112KiB/s (114kB/s)(6256KiB/55974msec); 0 zone resets clat (msec): min=48, max=371, avg=111.93, stdev=41.16 lat (msec): min=48, max=371, avg=111.93, stdev=41.16 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 61], 10.00th=[ 69], 20.00th=[ 82], | 30.00th=[ 89], 40.00th=[ 95], 50.00th=[ 104], 60.00th=[ 113], | 70.00th=[ 125], 80.00th=[ 142], 90.00th=[ 167], 95.00th=[ 192], | 99.00th=[ 251], 99.50th=[ 288], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 31, max= 192, per=25.40%, avg=111.24, stdev=39.12, samples=111 iops : min= 1, max= 12, avg= 6.18, stdev= 2.53, samples=111 lat (msec) : 10=0.52%, 20=18.75%, 50=23.18%, 100=28.39%, 250=28.78% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=1.90%, ctx=1384, 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=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=416KiB/s (426kB/s), 99.9KiB/s-114KiB/s (102kB/s-116kB/s), io=23.4MiB (24.5MB), run=55033-57517msec WRITE: bw=438KiB/s (449kB/s), 110KiB/s-114KiB/s (112kB/s-117kB/s), io=24.6MiB (25.8MB), run=55033-57517msec 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=174748: Sat Aug 15 10:40:10 2026 read: IOPS=1, BW=1332KiB/s (1364kB/s)(7168KiB/5383msec) clat (msec): min=2, max=1959, avg=508.06, stdev=674.51 lat (msec): min=2, max=1959, avg=508.06, stdev=674.51 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 190], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 207], 60.00th=[ 309], | 70.00th=[ 309], 80.00th=[ 701], 90.00th=[ 1955], 95.00th=[ 1955], | 99.00th=[ 1955], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 1822, max= 4087, per=67.92%, avg=2361.60, stdev=969.28, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=951KiB/s (974kB/s)(5120KiB/5383msec); 0 zone resets clat (msec): min=150, max=613, avg=347.35, stdev=230.36 lat (msec): min=150, max=613, avg=347.68, stdev=230.34 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 203], 60.00th=[ 203], | 70.00th=[ 584], 80.00th=[ 584], 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= 1822, max= 2043, per=40.62%, avg=1977.00, stdev=105.30, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 4=8.33%, 250=50.00%, 500=8.33%, 750=25.00%, 2000=8.33% cpu : usr=0.04%, sys=11.82%, ctx=482, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174749: Sat Aug 15 10:40:10 2026 read: IOPS=0, BW=358KiB/s (367kB/s)(2048KiB/5719msec) clat (msec): min=200, max=283, avg=242.21, stdev=58.38 lat (msec): min=200, max=283, avg=242.21, stdev=58.38 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 284], 95.00th=[ 284], | 99.00th=[ 284], 99.50th=[ 284], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 1367, max= 2043, per=49.04%, avg=1705.00, stdev=478.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1791KiB/s (1833kB/s)(10.0MiB/5719msec); 0 zone resets clat (msec): min=155, max=2389, avg=519.45, stdev=665.05 lat (msec): min=155, max=2389, avg=519.63, stdev=665.05 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 205], | 30.00th=[ 247], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 330], | 70.00th=[ 334], 80.00th=[ 435], 90.00th=[ 510], 95.00th=[ 2400], | 99.00th=[ 2400], 99.50th=[ 2400], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 1822, max= 5742, per=59.93%, avg=2916.83, stdev=1613.48, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=12.45%, ctx=200, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174751: Sat Aug 15 10:40:10 2026 read: IOPS=1, BW=1043KiB/s (1068kB/s)(6144KiB/5890msec) clat (usec): min=644, max=482547, avg=190037.02, stdev=215663.18 lat (usec): min=646, max=482549, avg=190038.59, stdev=215663.21 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 644], 10.00th=[ 644], 20.00th=[ 644], | 30.00th=[ 644], 40.00th=[ 816], 50.00th=[ 816], 60.00th=[299893], | 70.00th=[354419], 80.00th=[354419], 90.00th=[484443], 95.00th=[484443], | 99.00th=[484443], 99.50th=[484443], 99.90th=[484443], 99.95th=[484443], | 99.99th=[484443] bw ( KiB/s): min= 1914, max= 4087, per=92.46%, avg=3215.00, stdev=1148.27, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1043KiB/s (1068kB/s)(6144KiB/5890msec); 0 zone resets clat (msec): min=177, max=2309, avg=784.54, stdev=766.28 lat (msec): min=177, max=2309, avg=784.61, stdev=766.27 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 592], | 70.00th=[ 642], 80.00th=[ 642], 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= 1914, max= 2934, per=44.87%, avg=2183.60, stdev=422.43, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 750=16.67%, 1000=8.33% lat (msec) : 250=8.33%, 500=33.33%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=8.66%, ctx=161, 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=174753: Sat Aug 15 10:40:10 2026 read: IOPS=0, BW=993KiB/s (1016kB/s)(5120KiB/5158msec) clat (usec): min=507, max=254028, avg=179520.52, stdev=102399.68 lat (usec): min=509, max=254030, avg=179522.04, stdev=102399.91 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[193987], 40.00th=[193987], 50.00th=[217056], 60.00th=[217056], | 70.00th=[231736], 80.00th=[231736], 90.00th=[254804], 95.00th=[254804], | 99.00th=[254804], 99.50th=[254804], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 4087, max= 4087, per=100.00%, avg=4087.00, stdev= 0.00, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1390KiB/s (1423kB/s)(7168KiB/5158msec); 0 zone resets clat (msec): min=193, max=2163, avg=591.31, stdev=698.85 lat (msec): min=193, max=2163, avg=591.48, stdev=698.83 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 247], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 359], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 451], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 1456, max= 4000, per=56.25%, avg=2737.75, stdev=1270.67, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=41.67%, 500=41.67%, >=2000=8.33% cpu : usr=0.00%, sys=10.78%, ctx=171, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3477KiB/s (3561kB/s), 358KiB/s-1332KiB/s (367kB/s-1364kB/s), io=20.0MiB (20.0MB), run=5158-5890msec WRITE: bw=4868KiB/s (4985kB/s), 951KiB/s-1791KiB/s (974kB/s-1833kB/s), io=28.0MiB (29.4MB), run=5158-5890msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174750: Sat Aug 15 10:40:11 2026 read: IOPS=1, BW=1121KiB/s (1148kB/s)(7168KiB/6394msec) clat (msec): min=98, max=2020, avg=670.52, stdev=764.92 lat (msec): min=98, max=2020, avg=670.52, stdev=764.92 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 120], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 279], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 1469], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 1812, max= 3946, per=79.16%, avg=2437.25, stdev=1009.67, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=801KiB/s (820kB/s)(5120KiB/6394msec); 0 zone resets clat (msec): min=164, max=625, avg=326.58, stdev=184.20 lat (msec): min=164, max=625, avg=326.69, stdev=184.21 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 351], 80.00th=[ 351], 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= 1812, max= 2048, per=45.55%, avg=1963.67, stdev=131.62, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.83%, ctx=86, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174752: Sat Aug 15 10:40:11 2026 read: IOPS=0, BW=308KiB/s (316kB/s)(2048KiB/6643msec) clat (msec): min=235, max=404, avg=319.87, stdev=119.76 lat (msec): min=235, max=404, avg=319.87, stdev=119.76 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 236], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 1490, max= 2048, per=57.45%, avg=1769.00, stdev=394.57, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1541KiB/s (1578kB/s)(10.0MiB/6643msec); 0 zone resets clat (msec): min=134, max=2461, avg=572.62, stdev=686.06 lat (msec): min=134, max=2461, avg=573.18, stdev=685.88 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 232], | 30.00th=[ 262], 40.00th=[ 275], 50.00th=[ 279], 60.00th=[ 284], | 70.00th=[ 575], 80.00th=[ 609], 90.00th=[ 617], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 1812, max= 4063, per=61.22%, avg=2639.00, stdev=1105.98, samples=6 iops : min= 1, max= 3, avg= 1.83, stdev= 0.98, samples=6 lat (msec) : 250=25.00%, 500=41.67%, 750=25.00%, >=2000=8.33% cpu : usr=0.05%, sys=3.93%, ctx=133, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174754: Sat Aug 15 10:40:11 2026 read: IOPS=0, BW=944KiB/s (966kB/s)(6144KiB/6510msec) clat (msec): min=70, max=502, avg=270.53, stdev=158.50 lat (msec): min=70, max=502, avg=270.53, stdev=158.50 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 234], | 70.00th=[ 414], 80.00th=[ 414], 90.00th=[ 502], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 1812, max= 2048, per=64.27%, avg=1979.00, stdev=97.59, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=0, BW=944KiB/s (966kB/s)(6144KiB/6510msec); 0 zone resets clat (msec): min=166, max=2466, avg=773.20, stdev=869.04 lat (msec): min=166, max=2466, avg=773.53, stdev=868.90 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 567], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 1973, max= 4087, per=58.70%, avg=2530.50, stdev=1038.03, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=16.67%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.10%, ctx=93, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174755: Sat Aug 15 10:40:11 2026 read: IOPS=0, BW=770KiB/s (788kB/s)(5120KiB/6650msec) clat (msec): min=44, max=626, avg=327.01, stdev=224.62 lat (msec): min=44, max=626, avg=327.01, stdev=224.62 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 45], 10.00th=[ 45], 20.00th=[ 45], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 435], 80.00th=[ 435], 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= 1976, max= 4096, per=87.72%, avg=2701.00, stdev=1208.42, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1078KiB/s (1104kB/s)(7168KiB/6650msec); 0 zone resets clat (msec): min=168, max=2338, avg=683.54, stdev=759.79 lat (msec): min=168, max=2338, avg=683.67, stdev=759.77 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 203], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 527], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 676], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 1875, max= 2043, per=45.92%, avg=1979.60, stdev=66.44, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 50=8.33%, 250=33.33%, 500=16.67%, 750=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.46%, ctx=92, 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=3080KiB/s (3154kB/s), 308KiB/s-1121KiB/s (316kB/s-1148kB/s), io=20.0MiB (20.0MB), run=6394-6650msec WRITE: bw=4312KiB/s (4415kB/s), 801KiB/s-1541KiB/s (820kB/s-1578kB/s), io=28.0MiB (29.4MB), run=6394-6650msec 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=174767: Sat Aug 15 10:40:25 2026 read: IOPS=1, BW=4949KiB/s (5068kB/s)(12.0MiB/2483msec) clat (msec): min=624, max=912, avg=803.53, stdev=156.20 lat (msec): min=624, max=912, avg=803.53, stdev=156.20 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 911], 80.00th=[ 911], 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= 7953, max= 8094, per=100.00%, avg=8023.50, stdev=99.70, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=16.12%, ctx=299, 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=174768: Sat Aug 15 10:40:25 2026 read: IOPS=0, BW=1499KiB/s (1535kB/s)(4096KiB/2733msec) clat (nsec): min=852140k, max=852140k, avg=852139550.00, stdev= 0.00 lat (nsec): min=852142k, max=852142k, avg=852141825.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7953, max= 7953, per=100.00%, avg=7953.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2997KiB/s (3069kB/s)(8192KiB/2733msec); 0 zone resets clat (msec): min=499, max=1279, avg=889.50, stdev=551.99 lat (msec): min=499, max=1280, avg=890.30, stdev=552.53 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8062, max= 8062, per=88.43%, avg=8062.00, 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=6.66%, ctx=152, 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=174769: Sat Aug 15 10:40:25 2026 write: IOPS=0, BW=3419KiB/s (3501kB/s)(12.0MiB/3594msec); 0 zone resets clat (msec): min=222, max=2840, avg=1179.99, stdev=1443.48 lat (msec): min=222, max=2840, avg=1180.44, stdev=1443.48 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 477], 50.00th=[ 477], 60.00th=[ 477], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 8175, max= 8175, per=89.67%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.31%, ctx=45, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174770: Sat Aug 15 10:40:25 2026 write: IOPS=0, BW=4065KiB/s (4162kB/s)(12.0MiB/3023msec); 0 zone resets clat (msec): min=729, max=1340, avg=977.63, stdev=321.66 lat (msec): min=729, max=1341, avg=978.28, stdev=321.41 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7861, max= 8126, per=87.68%, avg=7993.50, stdev=187.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.33%, ctx=81, 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=5995KiB/s (6139kB/s), 1499KiB/s-4949KiB/s (1535kB/s-5068kB/s), io=16.0MiB (16.8MB), run=2483-2733msec WRITE: bw=9117KiB/s (9336kB/s), 2997KiB/s-4065KiB/s (3069kB/s-4162kB/s), io=32.0MiB (33.6MB), run=2733-3594msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174762: Sat Aug 15 10:40:25 2026 read: IOPS=1, BW=4119KiB/s (4218kB/s)(12.0MiB/2983msec) clat (msec): min=227, max=1471, avg=911.83, stdev=631.30 lat (msec): min=227, max=1471, avg=911.83, stdev=631.30 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 228], 10.00th=[ 228], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1036], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.66%, ctx=42, 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=174763: Sat Aug 15 10:40:25 2026 read: IOPS=0, BW=1091KiB/s (1117kB/s)(4096KiB/3756msec) clat (nsec): min=1161.0M, max=1161.0M, avg=1161001238.00, stdev= 0.00 lat (nsec): min=1161.0M, max=1161.0M, avg=1161005168.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1167], 5.00th=[ 1167], 10.00th=[ 1167], 20.00th=[ 1167], | 30.00th=[ 1167], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2181KiB/s (2233kB/s)(8192KiB/3756msec); 0 zone resets clat (msec): min=377, max=2029, avg=1203.40, stdev=1168.35 lat (msec): min=378, max=2029, avg=1203.91, stdev=1167.96 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 2022], | 70.00th=[ 2022], 80.00th=[ 2022], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 8159, max= 8159, per=93.52%, avg=8159.00, 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=4.55%, ctx=66, 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=174764: Sat Aug 15 10:40:25 2026 write: IOPS=1, BW=6120KiB/s (6266kB/s)(12.0MiB/2008msec); 0 zone resets clat (msec): min=357, max=872, avg=647.63, stdev=263.85 lat (msec): min=357, max=873, avg=649.56, stdev=264.50 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 5665, max= 8175, per=79.32%, avg=6920.00, stdev=1774.84, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=6.13%, ctx=50, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174765: Sat Aug 15 10:40:25 2026 write: IOPS=1, BW=5843KiB/s (5983kB/s)(12.0MiB/2103msec); 0 zone resets clat (msec): min=312, max=1255, avg=635.80, stdev=537.05 lat (msec): min=312, max=1256, avg=637.05, stdev=536.67 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 6860, max= 8062, per=85.52%, avg=7461.00, stdev=849.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.99%, ctx=58, 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=4362KiB/s (4467kB/s), 1091KiB/s-4119KiB/s (1117kB/s-4218kB/s), io=16.0MiB (16.8MB), run=2983-3756msec WRITE: bw=8724KiB/s (8934kB/s), 2181KiB/s-6120KiB/s (2233kB/s-6266kB/s), io=32.0MiB (33.6MB), run=2008-3756msec