== sanity test 398b: DIO and buffer IO race ============== 22:26:16 (1787711176) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.00699 s, 10.1 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=145493: Tue Aug 25 22:28:38 2026 read: IOPS=12, BW=48.0KiB/s (50.2kB/s)(5992KiB/122318msec) clat (usec): min=31, max=525303, avg=39161.58, stdev=33036.97 lat (usec): min=32, max=525305, avg=39169.00, stdev=33044.78 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 161], 20.00th=[ 17433], | 30.00th=[ 22676], 40.00th=[ 28181], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 46924], 80.00th=[ 58459], 90.00th=[ 74974], 95.00th=[ 90702], | 99.00th=[147850], 99.50th=[191890], 99.90th=[375391], 99.95th=[526386], | 99.99th=[526386] bw ( KiB/s): min= 7, max= 111, per=25.88%, avg=48.92, stdev=20.21, samples=239 iops : min= 1, max= 27, avg=11.57, stdev= 5.10, samples=239 write: IOPS=12, BW=51.5KiB/s (52.7kB/s)(6296KiB/122318msec); 0 zone resets clat (usec): min=884, max=286485, avg=40171.18, stdev=40953.02 lat (usec): min=885, max=286485, avg=40181.29, stdev=40950.68 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1139], 10.00th=[ 1418], 20.00th=[ 3752], | 30.00th=[ 8455], 40.00th=[ 18744], 50.00th=[ 29754], 60.00th=[ 40633], | 70.00th=[ 51643], 80.00th=[ 70779], 90.00th=[ 99091], 95.00th=[119014], | 99.00th=[170918], 99.50th=[198181], 99.90th=[246416], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 7, max= 118, per=25.82%, avg=51.12, stdev=19.65, samples=240 iops : min= 1, max= 29, avg=12.13, stdev= 4.94, samples=240 lat (usec) : 50=0.85%, 100=3.68%, 250=0.46%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.36% lat (msec) : 2=6.71%, 4=3.74%, 10=6.64%, 20=10.38%, 50=38.15% lat (msec) : 100=22.30%, 250=6.48%, 500=0.07%, 750=0.03% cpu : usr=0.07%, sys=5.42%, ctx=6388, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145494: Tue Aug 25 22:28:38 2026 read: IOPS=11, BW=47.9KiB/s (49.1kB/s)(5940KiB/123896msec) clat (usec): min=32, max=729043, avg=39582.29, stdev=35764.05 lat (usec): min=33, max=729046, avg=39583.85, stdev=35764.17 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 57], 10.00th=[ 90], 20.00th=[ 16712], | 30.00th=[ 22414], 40.00th=[ 27395], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 47973], 80.00th=[ 59507], 90.00th=[ 73925], 95.00th=[ 92799], | 99.00th=[145753], 99.50th=[162530], 99.90th=[341836], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 7, max= 124, per=25.42%, avg=48.05, stdev=21.33, samples=241 iops : min= 1, max= 31, avg=11.35, stdev= 5.39, samples=241 write: IOPS=12, BW=51.2KiB/s (52.5kB/s)(6348KiB/123896msec); 0 zone resets clat (usec): min=894, max=316661, avg=40767.45, stdev=42373.26 lat (usec): min=895, max=316663, avg=40776.52, stdev=42368.09 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1156], 10.00th=[ 1434], 20.00th=[ 3818], | 30.00th=[ 8717], 40.00th=[ 19006], 50.00th=[ 29754], 60.00th=[ 40109], | 70.00th=[ 54264], 80.00th=[ 70779], 90.00th=[ 94897], 95.00th=[120062], | 99.00th=[202376], 99.50th=[221250], 99.90th=[263193], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 147, per=25.77%, avg=51.02, stdev=22.81, samples=242 iops : min= 1, max= 36, avg=12.11, stdev= 5.76, samples=242 lat (usec) : 50=0.68%, 100=4.26%, 250=0.29%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=7.13%, 4=3.68%, 10=6.02%, 20=10.84%, 50=36.59% lat (msec) : 100=23.93%, 250=6.05%, 500=0.23%, 750=0.03% cpu : usr=0.06%, sys=5.30%, ctx=6305, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145495: Tue Aug 25 22:28:38 2026 read: IOPS=11, BW=47.6KiB/s (48.7kB/s)(6028KiB/126701msec) clat (usec): min=33, max=752874, avg=40143.30, stdev=36963.60 lat (usec): min=33, max=752875, avg=40145.05, stdev=36963.33 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 55], 10.00th=[ 77], 20.00th=[ 17171], | 30.00th=[ 22152], 40.00th=[ 27657], 50.00th=[ 33424], 60.00th=[ 40109], | 70.00th=[ 49546], 80.00th=[ 59507], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[139461], 99.50th=[219153], 99.90th=[325059], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 7, max= 127, per=25.10%, avg=47.44, stdev=20.88, samples=248 iops : min= 1, max= 31, avg=11.20, stdev= 5.24, samples=248 write: IOPS=12, BW=49.4KiB/s (50.6kB/s)(6260KiB/126701msec); 0 zone resets clat (usec): min=924, max=383434, avg=42057.36, stdev=40460.37 lat (usec): min=925, max=383435, avg=42060.59, stdev=40462.14 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1156], 10.00th=[ 1500], 20.00th=[ 4817], | 30.00th=[ 10290], 40.00th=[ 22152], 50.00th=[ 33162], 60.00th=[ 42730], | 70.00th=[ 55837], 80.00th=[ 73925], 90.00th=[ 96994], 95.00th=[120062], | 99.00th=[160433], 99.50th=[177210], 99.90th=[240124], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 7, max= 133, per=24.62%, avg=48.75, stdev=20.05, samples=250 iops : min= 1, max= 33, avg=11.54, stdev= 5.05, samples=250 lat (usec) : 50=1.07%, 100=4.30%, 250=0.23%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.33% lat (msec) : 2=5.73%, 4=3.35%, 10=6.09%, 20=10.51%, 50=36.23% lat (msec) : 100=25.29%, 250=6.54%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=5.36%, ctx=6502, 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=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=145496: Tue Aug 25 22:28:38 2026 read: IOPS=12, BW=48.3KiB/s (49.5kB/s)(6052KiB/125307msec) clat (usec): min=33, max=334577, avg=37987.82, stdev=30134.58 lat (usec): min=33, max=334578, avg=37992.38, stdev=30130.85 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 89], 20.00th=[ 15664], | 30.00th=[ 22152], 40.00th=[ 27657], 50.00th=[ 32900], 60.00th=[ 38536], | 70.00th=[ 46924], 80.00th=[ 56886], 90.00th=[ 74974], 95.00th=[ 88605], | 99.00th=[139461], 99.50th=[156238], 99.90th=[270533], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 7, max= 119, per=25.68%, avg=48.53, stdev=22.86, samples=243 iops : min= 1, max= 29, avg=11.48, stdev= 5.76, samples=243 write: IOPS=12, BW=49.8KiB/s (50.0kB/s)(6236KiB/125307msec); 0 zone resets clat (usec): min=933, max=775238, avg=43210.39, stdev=46959.88 lat (usec): min=935, max=775242, avg=43212.50, stdev=46960.27 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1156], 10.00th=[ 1565], 20.00th=[ 4228], | 30.00th=[ 9634], 40.00th=[ 21890], 50.00th=[ 32113], 60.00th=[ 43254], | 70.00th=[ 56361], 80.00th=[ 73925], 90.00th=[101188], 95.00th=[124257], | 99.00th=[189793], 99.50th=[221250], 99.90th=[325059], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 7, max= 111, per=24.95%, avg=49.41, stdev=19.33, samples=246 iops : min= 1, max= 27, avg=11.70, stdev= 4.89, samples=246 lat (usec) : 50=1.53%, 100=3.74%, 250=0.42%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.23% lat (msec) : 2=6.15%, 4=3.65%, 10=6.18%, 20=10.68%, 50=36.46% lat (msec) : 100=23.89%, 250=6.58%, 500=0.26%, 1000=0.03% cpu : usr=0.08%, sys=5.36%, ctx=6551, 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=190KiB/s (194kB/s), 47.6KiB/s-48.0KiB/s (48.7kB/s-50.2kB/s), io=23.4MiB (24.6MB), run=122318-126701msec WRITE: bw=198KiB/s (203kB/s), 49.4KiB/s-51.5KiB/s (50.6kB/s-52.7kB/s), io=24.6MiB (25.7MB), run=122318-126701msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145488: Tue Aug 25 22:30:46 2026 read: IOPS=5, BW=23.6KiB/s (24.2kB/s)(5992KiB/253880msec) clat (msec): min=4, max=564, avg=31.43, stdev=37.38 lat (msec): min=4, max=564, avg=31.44, stdev=37.38 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 42], 90.00th=[ 74], 95.00th=[ 99], | 99.00th=[ 174], 99.50th=[ 203], 99.90th=[ 514], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 7, max= 119, per=28.11%, avg=26.42, stdev=18.02, samples=440 iops : min= 1, max= 29, avg= 6.01, stdev= 4.53, samples=440 write: IOPS=6, BW=24.8KiB/s (25.4kB/s)(6296KiB/253880msec); 0 zone resets clat (msec): min=26, max=561, avg=131.15, stdev=66.18 lat (msec): min=26, max=561, avg=131.15, stdev=66.18 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 60], 10.00th=[ 70], 20.00th=[ 81], | 30.00th=[ 90], 40.00th=[ 100], 50.00th=[ 112], 60.00th=[ 126], | 70.00th=[ 148], 80.00th=[ 176], 90.00th=[ 224], 95.00th=[ 266], | 99.00th=[ 359], 99.50th=[ 393], 99.90th=[ 426], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 7, max= 56, per=24.94%, avg=24.44, stdev=11.54, samples=498 iops : min= 1, max= 14, avg= 5.51, stdev= 2.96, samples=498 lat (msec) : 10=6.41%, 20=19.63%, 50=15.46%, 100=25.81%, 250=29.26% lat (msec) : 500=3.32%, 750=0.10% cpu : usr=0.04%, sys=1.08%, ctx=5311, 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=145490: Tue Aug 25 22:30:46 2026 read: IOPS=5, BW=23.3KiB/s (23.9kB/s)(5940KiB/254575msec) clat (msec): min=5, max=748, avg=32.00, stdev=42.18 lat (msec): min=5, max=748, avg=32.00, stdev=42.18 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 42], 90.00th=[ 71], 95.00th=[ 100], | 99.00th=[ 178], 99.50th=[ 243], 99.90th=[ 510], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 95, per=28.27%, avg=26.57, stdev=17.92, samples=433 iops : min= 1, max= 23, avg= 6.05, stdev= 4.54, samples=433 write: IOPS=6, BW=24.9KiB/s (25.5kB/s)(6348KiB/254575msec); 0 zone resets clat (msec): min=36, max=513, avg=130.24, stdev=67.45 lat (msec): min=36, max=513, avg=130.25, stdev=67.45 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 66], 20.00th=[ 79], | 30.00th=[ 89], 40.00th=[ 100], 50.00th=[ 111], 60.00th=[ 126], | 70.00th=[ 148], 80.00th=[ 174], 90.00th=[ 222], 95.00th=[ 266], | 99.00th=[ 368], 99.50th=[ 430], 99.90th=[ 510], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 7, max= 63, per=25.05%, avg=24.55, stdev=12.02, samples=499 iops : min= 1, max= 15, avg= 5.54, stdev= 3.07, samples=499 lat (msec) : 10=6.71%, 20=18.85%, 50=16.15%, 100=25.39%, 250=29.30% lat (msec) : 500=3.48%, 750=0.13% cpu : usr=0.04%, sys=1.12%, ctx=5279, 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=145491: Tue Aug 25 22:30:46 2026 read: IOPS=5, BW=23.7KiB/s (24.3kB/s)(6028KiB/254342msec) clat (msec): min=4, max=507, avg=33.61, stdev=36.95 lat (msec): min=4, max=507, avg=33.61, stdev=36.95 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 48], 90.00th=[ 83], 95.00th=[ 106], | 99.00th=[ 163], 99.50th=[ 215], 99.90th=[ 305], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7, max= 111, per=27.38%, avg=25.74, stdev=18.26, samples=454 iops : min= 1, max= 27, avg= 5.85, stdev= 4.60, samples=454 write: IOPS=6, BW=24.6KiB/s (25.2kB/s)(6260KiB/254342msec); 0 zone resets clat (msec): min=34, max=870, avg=129.92, stdev=70.23 lat (msec): min=34, max=870, avg=129.92, stdev=70.23 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 68], 20.00th=[ 80], | 30.00th=[ 89], 40.00th=[ 99], 50.00th=[ 110], 60.00th=[ 124], | 70.00th=[ 142], 80.00th=[ 169], 90.00th=[ 226], 95.00th=[ 275], | 99.00th=[ 368], 99.50th=[ 418], 99.90th=[ 535], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 63, per=24.86%, avg=24.36, stdev=12.17, samples=497 iops : min= 1, max= 15, avg= 5.49, stdev= 3.12, samples=497 lat (msec) : 10=5.27%, 20=19.69%, 50=15.33%, 100=27.21%, 250=28.81% lat (msec) : 500=3.58%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.08%, ctx=5258, 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=145492: Tue Aug 25 22:30:46 2026 read: IOPS=6, BW=24.0KiB/s (24.6kB/s)(6052KiB/252021msec) clat (msec): min=5, max=333, avg=31.04, stdev=33.42 lat (msec): min=5, max=333, avg=31.04, stdev=33.42 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 43], 90.00th=[ 71], 95.00th=[ 95], | 99.00th=[ 163], 99.50th=[ 232], 99.90th=[ 264], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 96, per=28.44%, avg=26.73, stdev=18.19, samples=439 iops : min= 1, max= 24, avg= 6.09, stdev= 4.59, samples=439 write: IOPS=6, BW=24.7KiB/s (25.3kB/s)(6236KiB/252021msec); 0 zone resets clat (msec): min=36, max=843, avg=131.30, stdev=69.72 lat (msec): min=36, max=843, avg=131.30, stdev=69.72 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 67], 20.00th=[ 80], | 30.00th=[ 89], 40.00th=[ 100], 50.00th=[ 111], 60.00th=[ 128], | 70.00th=[ 148], 80.00th=[ 178], 90.00th=[ 222], 95.00th=[ 266], | 99.00th=[ 359], 99.50th=[ 451], 99.90th=[ 558], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 63, per=24.88%, avg=24.38, stdev=11.90, samples=494 iops : min= 1, max= 15, avg= 5.50, stdev= 3.04, samples=494 lat (msec) : 10=5.92%, 20=20.28%, 50=15.63%, 100=25.68%, 250=29.00% lat (msec) : 500=3.39%, 750=0.07%, 1000=0.03% cpu : usr=0.03%, sys=1.09%, ctx=5178, 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=94.3KiB/s (96.6kB/s), 23.3KiB/s-24.0KiB/s (23.9kB/s-24.6kB/s), io=23.4MiB (24.6MB), run=252021-254575msec WRITE: bw=98.8KiB/s (101kB/s), 24.6KiB/s-24.9KiB/s (25.2kB/s-25.5kB/s), io=24.6MiB (25.7MB), run=252021-254575msec 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=145552: Tue Aug 25 22:31:19 2026 read: IOPS=15, BW=252KiB/s (258kB/s)(5920KiB/23491msec) clat (usec): min=33, max=379276, avg=30002.79, stdev=33047.29 lat (usec): min=33, max=379277, avg=30003.91, stdev=33047.25 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 77], | 30.00th=[ 13698], 40.00th=[ 20841], 50.00th=[ 26608], 60.00th=[ 33162], | 70.00th=[ 40109], 80.00th=[ 47973], 90.00th=[ 60556], 95.00th=[ 69731], | 99.00th=[143655], 99.50th=[185598], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 63, max= 448, per=25.30%, avg=252.50, stdev=102.67, samples=46 iops : min= 3, max= 28, avg=15.07, stdev= 6.48, samples=46 write: IOPS=16, BW=271KiB/s (278kB/s)(6368KiB/23491msec); 0 zone resets clat (usec): min=1321, max=251876, avg=31053.85, stdev=33585.40 lat (usec): min=1323, max=251877, avg=31055.71, stdev=33585.49 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1811], 10.00th=[ 2638], 20.00th=[ 4948], | 30.00th=[ 7635], 40.00th=[ 13042], 50.00th=[ 19006], 60.00th=[ 27132], | 70.00th=[ 39060], 80.00th=[ 54789], 90.00th=[ 77071], 95.00th=[ 92799], | 99.00th=[162530], 99.50th=[187696], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 542, per=25.90%, avg=272.00, stdev=124.64, samples=46 iops : min= 1, max= 33, avg=16.33, stdev= 7.82, samples=46 lat (usec) : 50=1.56%, 100=10.03%, 250=1.17%, 500=0.39%, 750=0.26% lat (msec) : 2=3.91%, 4=4.56%, 10=10.68%, 20=11.72%, 50=35.94% lat (msec) : 100=16.80%, 250=2.73%, 500=0.26% cpu : usr=0.09%, sys=6.76%, ctx=1482, 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=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=145553: Tue Aug 25 22:31:19 2026 read: IOPS=14, BW=239KiB/s (245kB/s)(5744KiB/23991msec) clat (usec): min=35, max=176547, avg=31181.76, stdev=26565.03 lat (usec): min=35, max=176549, avg=31182.85, stdev=26565.09 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 53], 10.00th=[ 61], 20.00th=[ 99], | 30.00th=[ 17695], 40.00th=[ 24249], 50.00th=[ 29230], 60.00th=[ 34341], | 70.00th=[ 41157], 80.00th=[ 48497], 90.00th=[ 62129], 95.00th=[ 77071], | 99.00th=[123208], 99.50th=[160433], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 31, max= 542, per=23.98%, avg=239.30, stdev=107.75, samples=47 iops : min= 1, max= 33, avg=14.26, stdev= 6.73, samples=47 write: IOPS=17, BW=273KiB/s (279kB/s)(6544KiB/23991msec); 0 zone resets clat (usec): min=1247, max=259338, avg=31151.36, stdev=37718.04 lat (usec): min=1249, max=259340, avg=31153.61, stdev=37718.40 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1762], 10.00th=[ 2114], 20.00th=[ 3851], | 30.00th=[ 6194], 40.00th=[ 10814], 50.00th=[ 17433], 60.00th=[ 27919], | 70.00th=[ 39060], 80.00th=[ 51643], 90.00th=[ 78119], 95.00th=[ 99091], | 99.00th=[177210], 99.50th=[250610], 99.90th=[258999], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 64, max= 542, per=26.06%, avg=273.60, stdev=112.18, samples=47 iops : min= 4, max= 33, avg=16.40, stdev= 6.96, samples=47 lat (usec) : 50=1.43%, 100=7.94%, 250=1.30%, 500=0.13% lat (msec) : 2=4.43%, 4=7.29%, 10=9.38%, 20=11.46%, 50=36.72% lat (msec) : 100=16.41%, 250=3.12%, 500=0.39% cpu : usr=0.09%, sys=7.09%, ctx=1482, 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=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=145554: Tue Aug 25 22:31:19 2026 read: IOPS=17, BW=273KiB/s (280kB/s)(6256KiB/22879msec) clat (usec): min=35, max=149413, avg=31286.17, stdev=25815.13 lat (usec): min=35, max=149414, avg=31289.86, stdev=25815.70 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 155], | 30.00th=[ 19006], 40.00th=[ 24249], 50.00th=[ 29492], 60.00th=[ 34866], | 70.00th=[ 40633], 80.00th=[ 48497], 90.00th=[ 61604], 95.00th=[ 76022], | 99.00th=[130548], 99.50th=[143655], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 95, max= 473, per=27.52%, avg=274.67, stdev=93.51, samples=45 iops : min= 5, max= 29, avg=16.49, stdev= 5.88, samples=45 write: IOPS=16, BW=264KiB/s (270kB/s)(6032KiB/22879msec); 0 zone resets clat (usec): min=1294, max=206070, avg=28041.19, stdev=32909.58 lat (usec): min=1296, max=206073, avg=28043.13, stdev=32909.63 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1827], 10.00th=[ 2835], 20.00th=[ 4490], | 30.00th=[ 6587], 40.00th=[ 8717], 50.00th=[ 15533], 60.00th=[ 25035], | 70.00th=[ 35914], 80.00th=[ 45876], 90.00th=[ 69731], 95.00th=[ 88605], | 99.00th=[179307], 99.50th=[200279], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 93, max= 539, per=24.95%, avg=261.98, stdev=97.62, samples=45 iops : min= 5, max= 33, avg=15.67, stdev= 6.16, samples=45 lat (usec) : 50=1.56%, 100=7.94%, 250=1.43%, 500=0.13%, 750=0.13% lat (msec) : 2=2.86%, 4=5.34%, 10=14.06%, 20=10.03%, 50=38.67% lat (msec) : 100=15.10%, 250=2.73% cpu : usr=0.10%, sys=7.13%, ctx=1528, 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=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=145555: Tue Aug 25 22:31:19 2026 read: IOPS=16, BW=269KiB/s (276kB/s)(6032KiB/22393msec) clat (usec): min=34, max=199470, avg=29384.16, stdev=25659.30 lat (usec): min=34, max=199471, avg=29385.53, stdev=25659.37 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 61], 20.00th=[ 96], | 30.00th=[ 16909], 40.00th=[ 21627], 50.00th=[ 26870], 60.00th=[ 31851], | 70.00th=[ 39060], 80.00th=[ 49546], 90.00th=[ 61080], 95.00th=[ 73925], | 99.00th=[ 99091], 99.50th=[121111], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 63, max= 447, per=26.86%, avg=268.05, stdev=93.54, samples=44 iops : min= 3, max= 27, avg=16.07, stdev= 5.87, samples=44 write: IOPS=17, BW=279KiB/s (286kB/s)(6256KiB/22393msec); 0 zone resets clat (usec): min=1355, max=271597, avg=28830.22, stdev=33395.60 lat (usec): min=1357, max=271598, avg=28832.40, stdev=33395.48 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1795], 10.00th=[ 2638], 20.00th=[ 4424], | 30.00th=[ 7046], 40.00th=[ 11207], 50.00th=[ 17171], 60.00th=[ 27395], | 70.00th=[ 35390], 80.00th=[ 47449], 90.00th=[ 64750], 95.00th=[ 87557], | 99.00th=[183501], 99.50th=[225444], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 95, max= 510, per=26.61%, avg=279.36, stdev=94.05, samples=44 iops : min= 5, max= 31, avg=16.77, stdev= 5.82, samples=44 lat (usec) : 50=1.43%, 100=8.46%, 250=1.43%, 500=0.78% lat (msec) : 2=3.26%, 4=6.51%, 10=9.64%, 20=13.54%, 50=35.81% lat (msec) : 100=17.19%, 250=1.82%, 500=0.13% cpu : usr=0.11%, sys=7.77%, ctx=1466, 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=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=998KiB/s (1022kB/s), 239KiB/s-273KiB/s (245kB/s-280kB/s), io=23.4MiB (24.5MB), run=22393-23991msec WRITE: bw=1050KiB/s (1076kB/s), 264KiB/s-279KiB/s (270kB/s-286kB/s), io=24.6MiB (25.8MB), run=22393-23991msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145547: Tue Aug 25 22:31:55 2026 read: IOPS=6, BW=98.2KiB/s (101kB/s)(5920KiB/60273msec) clat (msec): min=7, max=221, avg=31.71, stdev=31.19 lat (msec): min=7, max=221, avg=31.71, stdev=31.19 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 37], 90.00th=[ 61], 95.00th=[ 96], | 99.00th=[ 194], 99.50th=[ 201], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 31, max= 409, per=27.14%, avg=106.40, stdev=59.33, samples=109 iops : min= 1, max= 25, avg= 5.97, stdev= 3.74, samples=109 write: IOPS=6, BW=106KiB/s (108kB/s)(6368KiB/60273msec); 0 zone resets clat (msec): min=40, max=518, avg=121.82, stdev=52.80 lat (msec): min=40, max=518, avg=121.82, stdev=52.80 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 59], 10.00th=[ 69], 20.00th=[ 83], | 30.00th=[ 93], 40.00th=[ 101], 50.00th=[ 112], 60.00th=[ 123], | 70.00th=[ 136], 80.00th=[ 155], 90.00th=[ 188], 95.00th=[ 224], | 99.00th=[ 284], 99.50th=[ 288], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 31, max= 224, per=25.72%, avg=105.97, stdev=40.47, samples=118 iops : min= 1, max= 14, avg= 5.95, stdev= 2.69, samples=118 lat (msec) : 10=2.99%, 20=17.71%, 50=21.09%, 100=24.74%, 250=31.64% lat (msec) : 500=1.69%, 750=0.13% cpu : usr=0.03%, sys=1.31%, ctx=1354, 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=145548: Tue Aug 25 22:31:55 2026 read: IOPS=5, BW=94.0KiB/s (96.3kB/s)(5744KiB/61102msec) clat (msec): min=6, max=214, avg=31.08, stdev=27.77 lat (msec): min=6, max=214, avg=31.08, stdev=27.77 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=[ 27], | 70.00th=[ 32], 80.00th=[ 40], 90.00th=[ 65], 95.00th=[ 88], | 99.00th=[ 146], 99.50th=[ 192], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 27, max= 411, per=27.63%, avg=108.30, stdev=71.15, samples=105 iops : min= 1, max= 25, avg= 6.10, stdev= 4.46, samples=105 write: IOPS=6, BW=107KiB/s (110kB/s)(6544KiB/61102msec); 0 zone resets clat (msec): min=31, max=492, avg=121.75, stdev=53.39 lat (msec): min=31, max=492, avg=121.75, stdev=53.39 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 59], 10.00th=[ 66], 20.00th=[ 79], | 30.00th=[ 91], 40.00th=[ 102], 50.00th=[ 110], 60.00th=[ 127], | 70.00th=[ 138], 80.00th=[ 161], 90.00th=[ 188], 95.00th=[ 215], | 99.00th=[ 288], 99.50th=[ 321], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 30, max= 287, per=26.05%, avg=107.32, stdev=41.52, samples=120 iops : min= 1, max= 17, avg= 6.03, stdev= 2.73, samples=120 lat (msec) : 10=4.04%, 20=15.76%, 50=21.35%, 100=24.48%, 250=33.07% lat (msec) : 500=1.30% cpu : usr=0.04%, sys=1.22%, ctx=1291, 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=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=145549: Tue Aug 25 22:31:55 2026 read: IOPS=6, BW=107KiB/s (110kB/s)(6256KiB/58334msec) clat (msec): min=5, max=194, avg=30.11, stdev=25.67 lat (msec): min=5, max=194, avg=30.11, stdev=25.67 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 41], 90.00th=[ 65], 95.00th=[ 83], | 99.00th=[ 142], 99.50th=[ 163], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 31, max= 320, per=29.24%, avg=114.63, stdev=71.22, samples=108 iops : min= 1, max= 20, avg= 6.50, stdev= 4.58, samples=108 write: IOPS=6, BW=103KiB/s (106kB/s)(6032KiB/58334msec); 0 zone resets clat (msec): min=43, max=274, avg=123.17, stdev=45.51 lat (msec): min=43, max=274, avg=123.18, stdev=45.51 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 61], 10.00th=[ 70], 20.00th=[ 85], | 30.00th=[ 94], 40.00th=[ 105], 50.00th=[ 118], 60.00th=[ 128], | 70.00th=[ 140], 80.00th=[ 161], 90.00th=[ 190], 95.00th=[ 209], | 99.00th=[ 257], 99.50th=[ 262], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 192, per=25.05%, avg=103.19, stdev=36.97, samples=115 iops : min= 1, max= 12, avg= 5.77, stdev= 2.47, samples=115 lat (msec) : 10=2.99%, 20=20.31%, 50=21.35%, 100=22.27%, 250=32.42% lat (msec) : 500=0.65% cpu : usr=0.04%, sys=1.41%, ctx=1334, 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=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=145550: Tue Aug 25 22:31:55 2026 read: IOPS=6, BW=101KiB/s (103kB/s)(6032KiB/59942msec) clat (msec): min=7, max=276, avg=30.25, stdev=28.87 lat (msec): min=7, max=276, avg=30.25, stdev=28.87 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 40], 90.00th=[ 58], 95.00th=[ 88], | 99.00th=[ 161], 99.50th=[ 165], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 319, per=27.73%, avg=108.69, stdev=69.00, samples=108 iops : min= 1, max= 19, avg= 6.11, stdev= 4.40, samples=108 write: IOPS=6, BW=104KiB/s (107kB/s)(6256KiB/59942msec); 0 zone resets clat (msec): min=42, max=522, avg=123.80, stdev=54.89 lat (msec): min=42, max=522, avg=123.80, stdev=54.89 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 60], 10.00th=[ 68], 20.00th=[ 80], | 30.00th=[ 91], 40.00th=[ 103], 50.00th=[ 113], 60.00th=[ 126], | 70.00th=[ 140], 80.00th=[ 163], 90.00th=[ 201], 95.00th=[ 228], | 99.00th=[ 288], 99.50th=[ 330], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 31, max= 224, per=25.25%, avg=104.03, stdev=40.73, samples=118 iops : min= 1, max= 14, avg= 5.81, stdev= 2.69, samples=118 lat (msec) : 10=2.47%, 20=21.35%, 50=20.05%, 100=22.66%, 250=32.29% lat (msec) : 500=1.04%, 750=0.13% cpu : usr=0.03%, sys=1.39%, ctx=1350, 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=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=392KiB/s (401kB/s), 94.0KiB/s-107KiB/s (96.3kB/s-110kB/s), io=23.4MiB (24.5MB), run=58334-61102msec WRITE: bw=412KiB/s (422kB/s), 103KiB/s-107KiB/s (106kB/s-110kB/s), io=24.6MiB (25.8MB), run=58334-61102msec 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=145572: Tue Aug 25 22:32:08 2026 read: IOPS=2, BW=2358KiB/s (2414kB/s)(7168KiB/3040msec) clat (msec): min=71, max=363, avg=151.47, stdev=100.18 lat (msec): min=71, max=363, avg=151.47, stdev=100.18 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 77], | 30.00th=[ 100], 40.00th=[ 100], 50.00th=[ 130], 60.00th=[ 159], | 70.00th=[ 159], 80.00th=[ 163], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1957, max= 5163, per=91.66%, avg=3738.67, stdev=1632.60, samples=3 iops : min= 1, max= 5, avg= 3.33, stdev= 2.08, samples=3 write: IOPS=1, BW=1684KiB/s (1725kB/s)(5120KiB/3040msec); 0 zone resets clat (msec): min=216, max=625, avg=382.65, stdev=150.17 lat (msec): min=216, max=625, avg=382.73, stdev=150.17 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 218], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 376], 80.00th=[ 376], 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= 1957, max= 3849, per=45.84%, avg=2618.00, stdev=1067.05, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=25.00%, 250=33.33%, 500=33.33%, 750=8.33% cpu : usr=0.03%, sys=3.95%, ctx=48, 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=145573: Tue Aug 25 22:32:08 2026 read: IOPS=0, BW=419KiB/s (429kB/s)(2048KiB/4885msec) clat (msec): min=141, max=624, avg=382.92, stdev=341.06 lat (msec): min=141, max=624, avg=382.92, stdev=341.06 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 625], | 70.00th=[ 625], 80.00th=[ 625], 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= 1815, max= 1957, per=46.24%, avg=1886.00, stdev=100.41, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2096KiB/s (2147kB/s)(10.0MiB/4885msec); 0 zone resets clat (msec): min=208, max=889, avg=397.36, stdev=195.32 lat (msec): min=208, max=889, avg=397.58, stdev=195.25 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 220], | 30.00th=[ 279], 40.00th=[ 321], 50.00th=[ 368], 60.00th=[ 380], | 70.00th=[ 384], 80.00th=[ 418], 90.00th=[ 506], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 1815, max= 4047, per=44.67%, avg=2551.00, stdev=959.54, samples=7 iops : min= 1, max= 3, avg= 1.86, stdev= 0.90, samples=7 lat (msec) : 250=25.00%, 500=50.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=2.42%, ctx=53, 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=145574: Tue Aug 25 22:32:08 2026 read: IOPS=1, BW=1224KiB/s (1253kB/s)(6144KiB/5020msec) clat (msec): min=101, max=884, avg=346.98, stdev=331.80 lat (msec): min=101, max=884, avg=346.98, stdev=331.80 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 104], | 30.00th=[ 104], 40.00th=[ 127], 50.00th=[ 127], 60.00th=[ 236], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 1957, max= 3849, per=60.41%, avg=2464.00, stdev=923.96, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1224KiB/s (1253kB/s)(6144KiB/5020msec); 0 zone resets clat (msec): min=279, max=1189, avg=465.21, stdev=358.41 lat (msec): min=279, max=1189, avg=465.28, stdev=358.40 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 321], | 70.00th=[ 414], 80.00th=[ 414], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 1738, max= 4096, per=42.89%, avg=2449.25, stdev=1104.82, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.57%, ctx=74, 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=145575: Tue Aug 25 22:32:08 2026 read: IOPS=1, BW=1214KiB/s (1243kB/s)(5120KiB/4219msec) clat (msec): min=148, max=751, avg=281.47, stdev=262.96 lat (msec): min=148, max=751, avg=281.47, stdev=262.96 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 176], 60.00th=[ 176], | 70.00th=[ 182], 80.00th=[ 182], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1924, max= 3915, per=64.38%, avg=2626.00, stdev=1117.79, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1699KiB/s (1740kB/s)(7168KiB/4219msec); 0 zone resets clat (msec): min=218, max=702, avg=381.84, stdev=162.91 lat (msec): min=219, max=702, avg=381.92, stdev=162.91 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 253], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 342], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 460], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1924, max= 4096, per=49.36%, avg=2818.80, stdev=1144.41, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=2.75%, ctx=67, 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=4080KiB/s (4178kB/s), 419KiB/s-2358KiB/s (429kB/s-2414kB/s), io=20.0MiB (20.0MB), run=3040-5020msec WRITE: bw=5712KiB/s (5849kB/s), 1224KiB/s-2096KiB/s (1253kB/s-2147kB/s), io=28.0MiB (29.4MB), run=3040-5020msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145577: Tue Aug 25 22:32:09 2026 read: IOPS=1, BW=1809KiB/s (1853kB/s)(7168KiB/3962msec) clat (msec): min=227, max=457, avg=322.60, stdev=91.37 lat (msec): min=227, max=457, avg=322.60, stdev=91.37 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 228], 10.00th=[ 228], 20.00th=[ 247], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 288], 60.00th=[ 384], | 70.00th=[ 384], 80.00th=[ 405], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 1980, max= 4063, per=60.42%, avg=2736.50, stdev=976.66, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1292KiB/s (1323kB/s)(5120KiB/3962msec); 0 zone resets clat (msec): min=127, max=763, avg=340.49, stdev=260.60 lat (msec): min=127, max=763, avg=340.56, stdev=260.61 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 128], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 207], 60.00th=[ 207], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 2027, max= 4055, per=53.25%, avg=3376.33, stdev=1168.56, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 250=50.00%, 500=41.67%, 1000=8.33% cpu : usr=0.05%, sys=11.16%, ctx=245, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145578: Tue Aug 25 22:32:09 2026 read: IOPS=0, BW=453KiB/s (464kB/s)(2048KiB/4521msec) clat (msec): min=272, max=766, avg=519.78, stdev=349.07 lat (msec): min=272, max=766, avg=519.79, stdev=349.07 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1980, max= 2027, per=44.24%, avg=2003.50, stdev=33.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2265KiB/s (2319kB/s)(10.0MiB/4521msec); 0 zone resets clat (msec): min=93, max=810, avg=346.81, stdev=212.69 lat (msec): min=93, max=810, avg=347.23, stdev=212.58 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 142], | 30.00th=[ 236], 40.00th=[ 241], 50.00th=[ 288], 60.00th=[ 338], | 70.00th=[ 342], 80.00th=[ 401], 90.00th=[ 584], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 2023, max= 4063, per=47.33%, avg=3001.50, stdev=1070.13, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=9.85%, ctx=123, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145579: Tue Aug 25 22:32:09 2026 read: IOPS=1, BW=1459KiB/s (1494kB/s)(6144KiB/4212msec) clat (usec): min=485, max=327237, avg=174215.06, stdev=140026.10 lat (usec): min=486, max=327238, avg=174218.32, stdev=140026.82 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[206570], 50.00th=[206570], 60.00th=[254804], | 70.00th=[256902], 80.00th=[256902], 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= 2023, max= 4063, per=73.56%, avg=3331.33, stdev=1135.70, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1459KiB/s (1494kB/s)(6144KiB/4212msec); 0 zone resets clat (msec): min=190, max=1387, avg=524.40, stdev=443.91 lat (msec): min=190, max=1387, avg=526.39, stdev=442.70 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 422], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 1954, max= 2913, per=35.17%, avg=2230.25, stdev=456.48, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=16.67%, 500=50.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=7.43%, ctx=107, 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=145580: Tue Aug 25 22:32:09 2026 read: IOPS=1, BW=1252KiB/s (1282kB/s)(5120KiB/4090msec) clat (usec): min=302, max=207747, avg=42089.76, stdev=92607.21 lat (usec): min=303, max=207748, avg=42090.38, stdev=92607.34 clat percentiles (usec): | 1.00th=[ 302], 5.00th=[ 302], 10.00th=[ 302], 20.00th=[ 302], | 30.00th=[ 383], 40.00th=[ 383], 50.00th=[ 420], 60.00th=[ 420], | 70.00th=[ 1598], 80.00th=[ 1598], 90.00th=[208667], 95.00th=[208667], | 99.00th=[208667], 99.50th=[208667], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1753KiB/s (1795kB/s)(7168KiB/4090msec); 0 zone resets clat (msec): min=100, max=1131, avg=553.92, stdev=336.60 lat (msec): min=100, max=1131, avg=554.00, stdev=336.60 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 355], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 493], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 793], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 1414, max= 4047, per=36.19%, avg=2294.60, stdev=1012.85, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=25.00% lat (msec) : 2=8.33%, 250=16.67%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=8.14%, ctx=116, 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=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=4530KiB/s (4639kB/s), 453KiB/s-1809KiB/s (464kB/s-1853kB/s), io=20.0MiB (20.0MB), run=3962-4521msec WRITE: bw=6342KiB/s (6494kB/s), 1292KiB/s-2265KiB/s (1323kB/s-2319kB/s), io=28.0MiB (29.4MB), run=3962-4521msec 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=145586: Tue Aug 25 22:32:24 2026 read: IOPS=0, BW=2788KiB/s (2855kB/s)(12.0MiB/4408msec) clat (msec): min=604, max=2860, avg=1379.27, stdev=1283.25 lat (msec): min=604, max=2860, avg=1379.27, stdev=1283.25 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=11.53%, ctx=886, 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=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=145589: Tue Aug 25 22:32:24 2026 read: IOPS=0, BW=1016KiB/s (1041kB/s)(4096KiB/4030msec) clat (nsec): min=2878.7M, max=2878.7M, avg=2878675101.00, stdev= 0.00 lat (nsec): min=2878.7M, max=2878.7M, avg=2878676909.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2869], 5.00th=[ 2869], 10.00th=[ 2869], 20.00th=[ 2869], | 30.00th=[ 2869], 40.00th=[ 2869], 50.00th=[ 2869], 60.00th=[ 2869], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2033KiB/s (2082kB/s)(8192KiB/4030msec); 0 zone resets clat (msec): min=263, max=783, avg=523.60, stdev=367.22 lat (msec): min=264, max=783, avg=524.08, stdev=367.32 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 264], 50.00th=[ 264], 60.00th=[ 785], | 70.00th=[ 785], 80.00th=[ 785], 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= 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 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.05%, sys=5.96%, ctx=482, 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=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=145590: Tue Aug 25 22:32:24 2026 write: IOPS=0, BW=2305KiB/s (2360kB/s)(12.0MiB/5332msec); 0 zone resets clat (msec): min=318, max=3082, avg=1704.24, stdev=1381.73 lat (msec): min=319, max=3098, avg=1709.78, stdev=1389.52 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 1720], 50.00th=[ 1720], 60.00th=[ 1720], | 70.00th=[ 3071], 80.00th=[ 3071], 90.00th=[ 3071], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min= 8062, max= 8175, per=100.00%, avg=8118.50, stdev=79.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=6.83%, ctx=90, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145591: Tue Aug 25 22:32:24 2026 write: IOPS=0, BW=2828KiB/s (2896kB/s)(12.0MiB/4345msec); 0 zone resets clat (msec): min=215, max=3518, avg=1364.50, stdev=1866.55 lat (msec): min=215, max=3518, avg=1364.87, stdev=1866.50 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 3507], 80.00th=[ 3507], 90.00th=[ 3507], 95.00th=[ 3507], | 99.00th=[ 3507], 99.50th=[ 3507], 99.90th=[ 3507], 99.95th=[ 3507], | 99.99th=[ 3507] bw ( KiB/s): min= 5834, max= 8015, per=100.00%, avg=6924.50, stdev=1542.20, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.66%, ctx=63, 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=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=3717KiB/s (3806kB/s), 1016KiB/s-2788KiB/s (1041kB/s-2855kB/s), io=16.0MiB (16.8MB), run=4030-4408msec WRITE: bw=6146KiB/s (6293kB/s), 2033KiB/s-2828KiB/s (2082kB/s-2896kB/s), io=32.0MiB (33.6MB), run=4030-5332msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145592: Tue Aug 25 22:32:24 2026 read: IOPS=0, BW=2836KiB/s (2904kB/s)(12.0MiB/4333msec) clat (msec): min=244, max=3310, avg=1431.92, stdev=1645.80 lat (msec): min=244, max=3310, avg=1431.92, stdev=1645.80 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 3306], 80.00th=[ 3306], 90.00th=[ 3306], 95.00th=[ 3306], | 99.00th=[ 3306], 99.50th=[ 3306], 99.90th=[ 3306], 99.95th=[ 3306], | 99.99th=[ 3306] bw ( KiB/s): min= 8047, max= 8192, per=100.00%, avg=8119.50, stdev=102.53, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.55%, ctx=200, 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=145593: Tue Aug 25 22:32:24 2026 read: IOPS=0, BW=918KiB/s (940kB/s)(4096KiB/4462msec) clat (nsec): min=3069.1M, max=3069.1M, avg=3069130675.00, stdev= 0.00 lat (nsec): min=3069.1M, max=3069.1M, avg=3069132750.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3071], 5.00th=[ 3071], 10.00th=[ 3071], 20.00th=[ 3071], | 30.00th=[ 3071], 40.00th=[ 3071], 50.00th=[ 3071], 60.00th=[ 3071], | 70.00th=[ 3071], 80.00th=[ 3071], 90.00th=[ 3071], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] 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 write: IOPS=0, BW=1836KiB/s (1880kB/s)(8192KiB/4462msec); 0 zone resets clat (msec): min=345, max=1023, avg=684.43, stdev=479.12 lat (msec): min=346, max=1024, avg=685.04, stdev=479.48 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 1020], | 70.00th=[ 1020], 80.00th=[ 1020], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 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) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.78%, ctx=45, 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=145594: Tue Aug 25 22:32:24 2026 write: IOPS=0, BW=2358KiB/s (2414kB/s)(12.0MiB/5212msec); 0 zone resets clat (msec): min=366, max=3606, avg=1726.12, stdev=1681.57 lat (msec): min=367, max=3606, avg=1726.46, stdev=1681.54 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 3608], 80.00th=[ 3608], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.02%, sys=2.80%, ctx=35, 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=145595: Tue Aug 25 22:32:24 2026 write: IOPS=0, BW=2844KiB/s (2913kB/s)(12.0MiB/4320msec); 0 zone resets clat (msec): min=299, max=3618, avg=1429.11, stdev=1896.62 lat (msec): min=299, max=3619, avg=1429.45, stdev=1896.65 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 3608], 80.00th=[ 3608], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 7301, max= 8192, per=100.00%, avg=7746.50, stdev=630.03, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.40%, ctx=38, 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=3672KiB/s (3760kB/s), 918KiB/s-2836KiB/s (940kB/s-2904kB/s), io=16.0MiB (16.8MB), run=4333-4462msec WRITE: bw=6287KiB/s (6438kB/s), 1836KiB/s-2844KiB/s (1880kB/s-2913kB/s), io=32.0MiB (33.6MB), run=4320-5212msec