== sanity test 398b: DIO and buffer IO race ============== 00:45:26 (1786941926) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.89027 s, 7.3 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=157066: Mon Aug 17 00:48:17 2026 read: IOPS=10, BW=41.6KiB/s (42.6kB/s)(5992KiB/144111msec) clat (usec): min=35, max=1168.4k, avg=48786.47, stdev=45889.22 lat (usec): min=36, max=1168.4k, avg=48791.66, stdev=45890.87 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 71], 10.00th=[ 465], | 20.00th=[ 23200], 30.00th=[ 29230], 40.00th=[ 35914], | 50.00th=[ 42206], 60.00th=[ 49021], 70.00th=[ 58983], | 80.00th=[ 72877], 90.00th=[ 89654], 95.00th=[ 107480], | 99.00th=[ 162530], 99.50th=[ 183501], 99.90th=[ 438305], | 99.95th=[1166017], 99.99th=[1166017] bw ( KiB/s): min= 7, max= 101, per=25.68%, avg=41.60, stdev=16.54, samples=280 iops : min= 1, max= 25, avg= 9.73, stdev= 4.17, samples=280 write: IOPS=10, BW=43.7KiB/s (44.7kB/s)(6296KiB/144111msec); 0 zone resets clat (usec): min=1173, max=335667, avg=44992.27, stdev=44502.58 lat (usec): min=1175, max=335668, avg=44994.81, stdev=44503.00 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1647], 10.00th=[ 2278], 20.00th=[ 5735], | 30.00th=[ 12387], 40.00th=[ 23462], 50.00th=[ 34341], 60.00th=[ 44303], | 70.00th=[ 59507], 80.00th=[ 76022], 90.00th=[101188], 95.00th=[130548], | 99.00th=[191890], 99.50th=[225444], 99.90th=[316670], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 7, max= 103, per=25.60%, avg=43.52, stdev=19.36, samples=281 iops : min= 1, max= 25, avg=10.21, stdev= 4.87, samples=281 lat (usec) : 50=0.39%, 100=3.84%, 250=0.52%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.49%, 4=3.55%, 10=5.99%, 20=8.17%, 50=35.42% lat (msec) : 100=28.78%, 250=8.30%, 500=0.33%, 2000=0.03% cpu : usr=0.09%, sys=5.04%, ctx=6736, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=157067: Mon Aug 17 00:48:17 2026 read: IOPS=10, BW=40.5KiB/s (41.5kB/s)(5940KiB/146649msec) clat (usec): min=36, max=1294.9k, avg=49151.07, stdev=47860.71 lat (usec): min=37, max=1294.9k, avg=49156.58, stdev=47861.74 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 71], 10.00th=[ 3064], | 20.00th=[ 22152], 30.00th=[ 28967], 40.00th=[ 35390], | 50.00th=[ 42730], 60.00th=[ 50070], 70.00th=[ 60031], | 80.00th=[ 72877], 90.00th=[ 90702], 95.00th=[ 107480], | 99.00th=[ 164627], 99.50th=[ 214959], 99.90th=[ 320865], | 99.95th=[1300235], 99.99th=[1300235] bw ( KiB/s): min= 7, max= 103, per=25.01%, avg=40.52, stdev=16.93, samples=285 iops : min= 1, max= 25, avg= 9.46, stdev= 4.26, samples=285 write: IOPS=10, BW=43.3KiB/s (44.3kB/s)(6348KiB/146649msec); 0 zone resets clat (usec): min=1201, max=441462, avg=46276.01, stdev=46603.22 lat (usec): min=1203, max=441466, avg=46281.84, stdev=46601.11 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1631], 10.00th=[ 2638], 20.00th=[ 6063], | 30.00th=[ 11731], 40.00th=[ 22938], 50.00th=[ 34341], 60.00th=[ 46400], | 70.00th=[ 61080], 80.00th=[ 79168], 90.00th=[106431], 95.00th=[133694], | 99.00th=[189793], 99.50th=[240124], 99.90th=[337642], 99.95th=[442500], | 99.99th=[442500] bw ( KiB/s): min= 7, max= 103, per=25.42%, avg=43.22, stdev=18.87, samples=285 iops : min= 1, max= 25, avg=10.14, stdev= 4.75, samples=285 lat (usec) : 50=0.42%, 100=3.42%, 250=0.49%, 500=0.10%, 750=0.10% lat (usec) : 1000=0.03% lat (msec) : 2=4.20%, 4=3.65%, 10=6.90%, 20=8.50%, 50=33.37% lat (msec) : 100=29.43%, 250=9.02%, 500=0.36%, 2000=0.03% cpu : usr=0.09%, sys=4.87%, ctx=6904, 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=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=157068: Mon Aug 17 00:48:17 2026 read: IOPS=10, BW=40.9KiB/s (41.8kB/s)(6028KiB/147561msec) clat (usec): min=35, max=424069, avg=47335.17, stdev=37020.61 lat (usec): min=36, max=424070, avg=47341.04, stdev=37020.92 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 72], 10.00th=[ 10290], 20.00th=[ 22414], | 30.00th=[ 28705], 40.00th=[ 33817], 50.00th=[ 40109], 60.00th=[ 47973], | 70.00th=[ 56361], 80.00th=[ 68682], 90.00th=[ 91751], 95.00th=[106431], | 99.00th=[173016], 99.50th=[204473], 99.90th=[404751], 99.95th=[425722], | 99.99th=[425722] bw ( KiB/s): min= 7, max= 103, per=25.18%, avg=40.79, stdev=18.84, samples=287 iops : min= 1, max= 25, avg= 9.53, stdev= 4.73, samples=287 write: IOPS=10, BW=42.4KiB/s (43.4kB/s)(6260KiB/147561msec); 0 zone resets clat (usec): min=1150, max=1357.9k, avg=48532.44, stdev=56607.68 lat (usec): min=1153, max=1357.9k, avg=48541.56, stdev=56610.70 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1631], 10.00th=[ 2868], | 20.00th=[ 6456], 30.00th=[ 13042], 40.00th=[ 24773], | 50.00th=[ 37487], 60.00th=[ 50594], 70.00th=[ 63177], | 80.00th=[ 80217], 90.00th=[ 105382], 95.00th=[ 132645], | 99.00th=[ 212861], 99.50th=[ 256902], 99.90th=[ 291505], | 99.95th=[1350566], 99.99th=[1350566] bw ( KiB/s): min= 7, max= 150, per=25.03%, avg=42.55, stdev=18.73, samples=286 iops : min= 1, max= 37, avg= 9.97, stdev= 4.72, samples=286 lat (usec) : 50=0.29%, 100=3.71%, 250=0.42%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=3.91%, 4=2.93%, 10=7.10%, 20=8.14%, 50=34.31% lat (msec) : 100=30.11%, 250=8.50%, 500=0.36%, 2000=0.03% cpu : usr=0.08%, sys=4.86%, ctx=6872, 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=157069: Mon Aug 17 00:48:17 2026 read: IOPS=10, BW=41.2KiB/s (42.1kB/s)(6052KiB/147050msec) clat (usec): min=33, max=430682, avg=46862.10, stdev=35590.99 lat (usec): min=33, max=430683, avg=46866.16, stdev=35588.56 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 72], 10.00th=[ 11731], 20.00th=[ 22414], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 46924], | 70.00th=[ 55837], 80.00th=[ 68682], 90.00th=[ 87557], 95.00th=[104334], | 99.00th=[156238], 99.50th=[196084], 99.90th=[396362], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 7, max= 95, per=25.60%, avg=41.46, stdev=17.28, samples=284 iops : min= 1, max= 23, avg= 9.70, stdev= 4.35, samples=284 write: IOPS=10, BW=42.4KiB/s (43.4kB/s)(6236KiB/147050msec); 0 zone resets clat (usec): min=942, max=1442.4k, avg=48702.06, stdev=58747.27 lat (usec): min=944, max=1442.4k, avg=48704.76, stdev=58747.25 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1680], 10.00th=[ 2573], | 20.00th=[ 6915], 30.00th=[ 14615], 40.00th=[ 26084], | 50.00th=[ 38011], 60.00th=[ 47449], 70.00th=[ 62129], | 80.00th=[ 80217], 90.00th=[ 106431], 95.00th=[ 137364], | 99.00th=[ 181404], 99.50th=[ 233833], 99.90th=[ 530580], | 99.95th=[1434452], 99.99th=[1434452] bw ( KiB/s): min= 7, max= 110, per=24.85%, avg=42.24, stdev=17.83, samples=287 iops : min= 1, max= 27, avg= 9.89, stdev= 4.47, samples=287 lat (usec) : 50=0.36%, 100=3.68%, 250=0.26%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=4.10%, 4=3.03%, 10=5.86%, 20=8.14%, 50=37.17% lat (msec) : 100=27.93%, 250=8.92%, 500=0.29%, 750=0.03%, 2000=0.03% cpu : usr=0.08%, sys=4.85%, ctx=6783, 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=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=163KiB/s (167kB/s), 40.5KiB/s-41.6KiB/s (41.5kB/s-42.6kB/s), io=23.4MiB (24.6MB), run=144111-147561msec WRITE: bw=170KiB/s (174kB/s), 42.4KiB/s-43.7KiB/s (43.4kB/s-44.7kB/s), io=24.6MiB (25.7MB), run=144111-147561msec rand-rw: (groupid=0, jobs=1): err= 0: pid=157061: Mon Aug 17 00:50:26 2026 read: IOPS=5, BW=21.7KiB/s (22.2kB/s)(5992KiB/276401msec) clat (msec): min=5, max=1260, avg=40.18, stdev=53.86 lat (msec): min=5, max=1260, avg=40.19, stdev=53.86 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=[ 28], | 70.00th=[ 37], 80.00th=[ 55], 90.00th=[ 93], 95.00th=[ 127], | 99.00th=[ 226], 99.50th=[ 271], 99.90th=[ 422], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 7, max= 87, per=28.47%, avg=24.48, stdev=16.04, samples=471 iops : min= 1, max= 21, avg= 5.48, stdev= 4.05, samples=471 write: IOPS=5, BW=22.8KiB/s (23.3kB/s)(6296KiB/276401msec); 0 zone resets clat (msec): min=32, max=669, avg=137.05, stdev=72.45 lat (msec): min=32, max=669, avg=137.06, stdev=72.44 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 69], 20.00th=[ 83], | 30.00th=[ 94], 40.00th=[ 104], 50.00th=[ 118], 60.00th=[ 133], | 70.00th=[ 155], 80.00th=[ 182], 90.00th=[ 234], 95.00th=[ 275], | 99.00th=[ 384], 99.50th=[ 435], 99.90th=[ 651], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 55, per=25.17%, avg=22.65, stdev=11.24, samples=533 iops : min= 1, max= 13, avg= 5.02, stdev= 2.86, samples=533 lat (msec) : 10=2.60%, 20=17.97%, 50=18.00%, 100=24.64%, 250=32.36% lat (msec) : 500=4.23%, 750=0.16%, 2000=0.03% cpu : usr=0.04%, sys=1.40%, ctx=5181, 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=157062: Mon Aug 17 00:50:26 2026 read: IOPS=5, BW=21.4KiB/s (21.0kB/s)(5940KiB/277097msec) clat (msec): min=5, max=1381, avg=38.75, stdev=54.55 lat (msec): min=5, max=1381, avg=38.75, stdev=54.55 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 52], 90.00th=[ 88], 95.00th=[ 121], | 99.00th=[ 228], 99.50th=[ 275], 99.90th=[ 430], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 7, max= 95, per=28.99%, avg=24.93, stdev=17.27, samples=460 iops : min= 1, max= 23, avg= 5.60, stdev= 4.36, samples=460 write: IOPS=5, BW=22.9KiB/s (23.5kB/s)(6348KiB/277097msec); 0 zone resets clat (msec): min=39, max=620, avg=138.04, stdev=72.90 lat (msec): min=39, max=620, avg=138.04, stdev=72.90 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 81], | 30.00th=[ 92], 40.00th=[ 104], 50.00th=[ 118], 60.00th=[ 136], | 70.00th=[ 157], 80.00th=[ 190], 90.00th=[ 241], 95.00th=[ 279], | 99.00th=[ 380], 99.50th=[ 426], 99.90th=[ 506], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 7, max= 55, per=25.32%, avg=22.78, stdev=11.55, samples=536 iops : min= 1, max= 13, avg= 5.05, stdev= 2.94, samples=536 lat (msec) : 10=3.61%, 20=16.67%, 50=18.85%, 100=24.54%, 250=31.41% lat (msec) : 500=4.82%, 750=0.07%, 2000=0.03% cpu : usr=0.05%, sys=1.36%, ctx=5210, 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=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=157063: Mon Aug 17 00:50:26 2026 read: IOPS=5, BW=21.9KiB/s (22.4kB/s)(6028KiB/275292msec) clat (msec): min=5, max=394, avg=39.54, stdev=43.50 lat (msec): min=5, max=394, avg=39.54, stdev=43.50 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 37], 80.00th=[ 59], 90.00th=[ 89], 95.00th=[ 128], | 99.00th=[ 218], 99.50th=[ 271], 99.90th=[ 372], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 87, per=28.28%, avg=24.32, stdev=16.41, samples=478 iops : min= 1, max= 21, avg= 5.44, stdev= 4.16, samples=478 write: IOPS=5, BW=22.7KiB/s (23.3kB/s)(6260KiB/275292msec); 0 zone resets clat (msec): min=38, max=1451, avg=137.51, stdev=79.70 lat (msec): min=38, max=1451, avg=137.52, stdev=79.70 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 62], 10.00th=[ 69], 20.00th=[ 82], | 30.00th=[ 92], 40.00th=[ 105], 50.00th=[ 116], 60.00th=[ 132], | 70.00th=[ 155], 80.00th=[ 184], 90.00th=[ 232], 95.00th=[ 279], | 99.00th=[ 409], 99.50th=[ 439], 99.90th=[ 651], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 7, max= 55, per=25.26%, avg=22.73, stdev=11.51, samples=529 iops : min= 1, max= 13, avg= 5.04, stdev= 2.92, samples=529 lat (msec) : 10=2.96%, 20=17.64%, 50=17.87%, 100=25.49%, 250=31.74% lat (msec) : 500=4.17%, 750=0.10%, 2000=0.03% cpu : usr=0.05%, sys=1.40%, ctx=5276, 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=157064: Mon Aug 17 00:50:26 2026 read: IOPS=5, BW=22.0KiB/s (22.5kB/s)(6052KiB/275051msec) clat (msec): min=5, max=367, avg=38.08, stdev=41.48 lat (msec): min=5, max=367, avg=38.09, stdev=41.48 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 53], 90.00th=[ 87], 95.00th=[ 118], | 99.00th=[ 209], 99.50th=[ 259], 99.90th=[ 326], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7, max= 94, per=28.58%, avg=24.58, stdev=17.94, samples=475 iops : min= 1, max= 23, avg= 5.50, stdev= 4.54, samples=475 write: IOPS=5, BW=22.7KiB/s (23.2kB/s)(6236KiB/275051msec); 0 zone resets clat (msec): min=33, max=1479, avg=139.16, stdev=80.11 lat (msec): min=33, max=1479, avg=139.17, stdev=80.11 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 82], | 30.00th=[ 93], 40.00th=[ 107], 50.00th=[ 120], 60.00th=[ 138], | 70.00th=[ 159], 80.00th=[ 186], 90.00th=[ 234], 95.00th=[ 288], | 99.00th=[ 393], 99.50th=[ 422], 99.90th=[ 575], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 7, max= 56, per=24.99%, avg=22.49, stdev=11.31, samples=533 iops : min= 1, max= 14, avg= 4.98, stdev= 2.88, samples=533 lat (msec) : 10=2.31%, 20=18.59%, 50=18.65%, 100=23.93%, 250=32.19% lat (msec) : 500=4.20%, 750=0.10%, 2000=0.03% cpu : usr=0.05%, sys=1.34%, ctx=5208, 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=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=86.7KiB/s (88.7kB/s), 21.4KiB/s-22.0KiB/s (21.0kB/s-22.5kB/s), io=23.4MiB (24.6MB), run=275051-277097msec WRITE: bw=90.7KiB/s (92.9kB/s), 22.7KiB/s-22.9KiB/s (23.2kB/s-23.5kB/s), io=24.6MiB (25.7MB), run=275051-277097msec 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=157128: Mon Aug 17 00:51:08 2026 read: IOPS=11, BW=190KiB/s (195kB/s)(5920KiB/31145msec) clat (usec): min=38, max=294443, avg=43692.67, stdev=38678.35 lat (usec): min=38, max=294444, avg=43707.36, stdev=38672.83 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 66], 10.00th=[ 78], 20.00th=[ 16909], | 30.00th=[ 25822], 40.00th=[ 31851], 50.00th=[ 37487], 60.00th=[ 46400], | 70.00th=[ 53216], 80.00th=[ 66323], 90.00th=[ 83362], 95.00th=[ 96994], | 99.00th=[227541], 99.50th=[283116], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 63, max= 415, per=24.55%, avg=188.80, stdev=84.30, samples=61 iops : min= 3, max= 25, avg=11.05, stdev= 5.30, samples=61 write: IOPS=12, BW=204KiB/s (209kB/s)(6368KiB/31145msec); 0 zone resets clat (usec): min=1216, max=257152, avg=37530.97, stdev=39564.42 lat (usec): min=1217, max=257153, avg=37533.97, stdev=39564.59 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2671], 10.00th=[ 3851], 20.00th=[ 5932], | 30.00th=[ 9503], 40.00th=[ 14615], 50.00th=[ 23200], 60.00th=[ 35914], | 70.00th=[ 46924], 80.00th=[ 62129], 90.00th=[ 92799], 95.00th=[116917], | 99.00th=[170918], 99.50th=[231736], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 31, max= 542, per=25.22%, avg=204.07, stdev=95.81, samples=61 iops : min= 1, max= 33, avg=12.02, stdev= 6.08, samples=61 lat (usec) : 50=0.65%, 100=6.25%, 250=0.65%, 500=0.39% lat (msec) : 2=1.82%, 4=4.17%, 10=11.07%, 20=10.29%, 50=33.33% lat (msec) : 100=25.13%, 250=5.73%, 500=0.52% cpu : usr=0.07%, sys=6.08%, 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=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=157129: Mon Aug 17 00:51:08 2026 read: IOPS=12, BW=193KiB/s (198kB/s)(5744KiB/29695msec) clat (usec): min=45, max=203132, avg=46203.64, stdev=32468.62 lat (usec): min=46, max=203133, avg=46205.25, stdev=32468.55 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 71], 10.00th=[ 87], 20.00th=[ 23200], | 30.00th=[ 29230], 40.00th=[ 34341], 50.00th=[ 41681], 60.00th=[ 49546], | 70.00th=[ 58983], 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[102237], | 99.00th=[158335], 99.50th=[175113], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 31, max= 384, per=25.22%, avg=193.95, stdev=78.05, samples=58 iops : min= 1, max= 24, avg=11.38, stdev= 5.01, samples=58 write: IOPS=13, BW=220KiB/s (226kB/s)(6544KiB/29695msec); 0 zone resets clat (usec): min=1494, max=234076, avg=31932.68, stdev=35326.85 lat (usec): min=1496, max=234078, avg=31939.21, stdev=35334.95 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 1958], 10.00th=[ 2638], 20.00th=[ 4293], | 30.00th=[ 6390], 40.00th=[ 10290], 50.00th=[ 17695], 60.00th=[ 27132], | 70.00th=[ 40109], 80.00th=[ 59507], 90.00th=[ 86508], 95.00th=[107480], | 99.00th=[132645], 99.50th=[147850], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 506, per=27.33%, avg=221.09, stdev=98.76, samples=58 iops : min= 1, max= 31, avg=13.09, stdev= 6.22, samples=58 lat (usec) : 50=0.13%, 100=4.95%, 250=0.91%, 500=0.13% lat (msec) : 2=3.12%, 4=5.99%, 10=12.11%, 20=7.94%, 50=34.77% lat (msec) : 100=23.83%, 250=6.12% cpu : usr=0.09%, sys=6.52%, ctx=1558, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=157130: Mon Aug 17 00:51:08 2026 read: IOPS=13, BW=210KiB/s (215kB/s)(6256KiB/29824msec) clat (usec): min=43, max=312299, avg=41727.90, stdev=33606.73 lat (usec): min=43, max=312300, avg=41739.31, stdev=33610.83 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 70], 10.00th=[ 84], 20.00th=[ 19268], | 30.00th=[ 26608], 40.00th=[ 33162], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 53740], 80.00th=[ 64750], 90.00th=[ 78119], 95.00th=[ 92799], | 99.00th=[164627], 99.50th=[225444], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 31, max= 509, per=27.44%, avg=210.98, stdev=94.66, samples=58 iops : min= 1, max= 31, avg=12.45, stdev= 6.01, samples=58 write: IOPS=12, BW=202KiB/s (207kB/s)(6032KiB/29824msec); 0 zone resets clat (usec): min=1660, max=212296, avg=35743.20, stdev=36038.47 lat (usec): min=1662, max=212298, avg=35748.83, stdev=36039.30 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 2212], 10.00th=[ 3261], 20.00th=[ 6783], | 30.00th=[ 9765], 40.00th=[ 15270], 50.00th=[ 23987], 60.00th=[ 35390], | 70.00th=[ 46400], 80.00th=[ 62653], 90.00th=[ 84411], 95.00th=[104334], | 99.00th=[166724], 99.50th=[208667], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 31, max= 411, per=24.61%, avg=199.09, stdev=81.01, samples=58 iops : min= 1, max= 25, avg=11.71, stdev= 5.12, samples=58 lat (usec) : 50=0.52%, 100=6.64%, 250=1.30%, 500=0.26%, 750=0.13% lat (msec) : 2=1.17%, 4=5.21%, 10=8.98%, 20=9.11%, 50=36.98% lat (msec) : 100=25.39%, 250=4.17%, 500=0.13% cpu : usr=0.09%, sys=5.90%, ctx=1636, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=157131: Mon Aug 17 00:51:08 2026 read: IOPS=12, BW=204KiB/s (209kB/s)(6032KiB/29506msec) clat (usec): min=41, max=185255, avg=43336.61, stdev=33799.24 lat (usec): min=42, max=185257, avg=43338.33, stdev=33799.31 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 63], 10.00th=[ 79], 20.00th=[ 13960], | 30.00th=[ 26608], 40.00th=[ 33424], 50.00th=[ 38011], 60.00th=[ 47449], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 89654], 95.00th=[107480], | 99.00th=[139461], 99.50th=[183501], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 62, max= 478, per=26.49%, avg=203.68, stdev=94.30, samples=57 iops : min= 3, max= 29, avg=12.00, stdev= 5.99, samples=57 write: IOPS=13, BW=212KiB/s (217kB/s)(6256KiB/29506msec); 0 zone resets clat (usec): min=1580, max=253629, avg=33494.29, stdev=36792.80 lat (usec): min=1582, max=253631, avg=33527.86, stdev=36800.36 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2024], 10.00th=[ 2573], 20.00th=[ 5211], | 30.00th=[ 8455], 40.00th=[ 13829], 50.00th=[ 21627], 60.00th=[ 29230], | 70.00th=[ 40633], 80.00th=[ 53216], 90.00th=[ 83362], 95.00th=[108528], | 99.00th=[160433], 99.50th=[225444], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 445, per=26.14%, avg=211.44, stdev=78.02, samples=57 iops : min= 1, max= 27, avg=12.49, stdev= 4.96, samples=57 lat (usec) : 50=0.78%, 100=6.64%, 250=1.69%, 500=0.26%, 750=0.13% lat (msec) : 2=2.60%, 4=5.60%, 10=9.38%, 20=8.20%, 50=35.68% lat (msec) : 100=22.53%, 250=6.38%, 500=0.13% cpu : usr=0.09%, sys=5.63%, ctx=1543, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=769KiB/s (788kB/s), 190KiB/s-210KiB/s (195kB/s-215kB/s), io=23.4MiB (24.5MB), run=29506-31145msec WRITE: bw=809KiB/s (829kB/s), 202KiB/s-220KiB/s (207kB/s-226kB/s), io=24.6MiB (25.8MB), run=29506-31145msec rand-rw: (groupid=0, jobs=1): err= 0: pid=157123: Mon Aug 17 00:51:41 2026 read: IOPS=5, BW=93.9KiB/s (96.1kB/s)(5920KiB/63071msec) clat (msec): min=6, max=262, avg=36.97, stdev=37.77 lat (msec): min=6, max=262, avg=36.97, stdev=37.77 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 44], 90.00th=[ 75], 95.00th=[ 114], | 99.00th=[ 236], 99.50th=[ 253], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 30, max= 318, per=28.40%, avg=106.20, stdev=66.09, samples=109 iops : min= 1, max= 19, avg= 5.83, stdev= 4.21, samples=109 write: IOPS=6, BW=101KiB/s (103kB/s)(6368KiB/63071msec); 0 zone resets clat (msec): min=36, max=378, avg=123.81, stdev=63.15 lat (msec): min=36, max=378, avg=123.82, stdev=63.15 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 77], | 30.00th=[ 85], 40.00th=[ 95], 50.00th=[ 106], 60.00th=[ 115], | 70.00th=[ 128], 80.00th=[ 167], 90.00th=[ 215], 95.00th=[ 268], | 99.00th=[ 326], 99.50th=[ 338], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 30, max= 192, per=25.67%, avg=101.15, stdev=47.64, samples=123 iops : min= 1, max= 12, avg= 5.51, stdev= 3.06, samples=123 lat (msec) : 10=1.69%, 20=15.10%, 50=23.57%, 100=29.17%, 250=26.95% lat (msec) : 500=3.52% cpu : usr=0.06%, sys=1.68%, ctx=1377, 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=157124: Mon Aug 17 00:51:41 2026 read: IOPS=5, BW=89.8KiB/s (91.0kB/s)(5744KiB/63955msec) clat (msec): min=7, max=341, avg=39.96, stdev=43.79 lat (msec): min=7, max=341, avg=39.97, stdev=43.79 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 52], 90.00th=[ 89], 95.00th=[ 148], | 99.00th=[ 228], 99.50th=[ 239], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 21, max= 288, per=28.61%, avg=106.99, stdev=64.63, samples=106 iops : min= 1, max= 18, avg= 5.90, stdev= 4.13, samples=106 write: IOPS=6, BW=102KiB/s (105kB/s)(6544KiB/63955msec); 0 zone resets clat (msec): min=45, max=439, avg=120.97, stdev=64.43 lat (msec): min=45, max=439, avg=120.98, stdev=64.42 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 71], | 30.00th=[ 80], 40.00th=[ 92], 50.00th=[ 101], 60.00th=[ 115], | 70.00th=[ 136], 80.00th=[ 165], 90.00th=[ 203], 95.00th=[ 253], | 99.00th=[ 347], 99.50th=[ 380], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 31, max= 224, per=26.21%, avg=103.28, stdev=50.39, samples=124 iops : min= 1, max= 14, avg= 5.65, stdev= 3.25, samples=124 lat (msec) : 10=1.43%, 20=16.41%, 50=19.92%, 100=31.77%, 250=27.47% lat (msec) : 500=2.99% cpu : usr=0.05%, sys=1.58%, ctx=1368, 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=157125: Mon Aug 17 00:51:41 2026 read: IOPS=6, BW=101KiB/s (103kB/s)(6256KiB/61973msec) clat (msec): min=7, max=273, avg=36.83, stdev=37.12 lat (msec): min=7, max=273, avg=36.84, stdev=37.12 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 45], 90.00th=[ 75], 95.00th=[ 112], | 99.00th=[ 211], 99.50th=[ 262], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 318, per=28.65%, avg=107.15, stdev=73.15, samples=115 iops : min= 1, max= 19, avg= 5.89, stdev= 4.64, samples=115 write: IOPS=6, BW=97.3KiB/s (99.7kB/s)(6032KiB/61973msec); 0 zone resets clat (msec): min=43, max=394, avg=126.02, stdev=63.70 lat (msec): min=43, max=394, avg=126.02, stdev=63.70 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 65], 20.00th=[ 75], | 30.00th=[ 88], 40.00th=[ 97], 50.00th=[ 108], 60.00th=[ 122], | 70.00th=[ 140], 80.00th=[ 167], 90.00th=[ 222], 95.00th=[ 257], | 99.00th=[ 326], 99.50th=[ 380], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 31, max= 192, per=24.97%, avg=98.37, stdev=44.76, samples=120 iops : min= 1, max= 12, avg= 5.33, stdev= 2.87, samples=120 lat (msec) : 10=1.69%, 20=15.49%, 50=26.04%, 100=25.39%, 250=28.39% lat (msec) : 500=2.99% cpu : usr=0.04%, sys=1.70%, ctx=1353, 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=157126: Mon Aug 17 00:51:41 2026 read: IOPS=5, BW=95.2KiB/s (97.5kB/s)(6032KiB/63328msec) clat (msec): min=6, max=282, avg=38.00, stdev=39.65 lat (msec): min=6, max=282, avg=38.00, stdev=39.65 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 79], 95.00th=[ 126], | 99.00th=[ 251], 99.50th=[ 268], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 30, max= 286, per=29.76%, avg=111.29, stdev=61.97, samples=105 iops : min= 1, max= 17, avg= 6.15, stdev= 3.95, samples=105 write: IOPS=6, BW=98.8KiB/s (101kB/s)(6256KiB/63328msec); 0 zone resets clat (msec): min=40, max=374, avg=125.05, stdev=62.66 lat (msec): min=40, max=374, avg=125.06, stdev=62.66 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 60], 10.00th=[ 66], 20.00th=[ 77], | 30.00th=[ 89], 40.00th=[ 97], 50.00th=[ 107], 60.00th=[ 120], | 70.00th=[ 136], 80.00th=[ 167], 90.00th=[ 203], 95.00th=[ 279], | 99.00th=[ 338], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 30, max= 192, per=25.09%, avg=98.84, stdev=46.00, samples=123 iops : min= 1, max= 12, avg= 5.37, stdev= 2.95, samples=123 lat (msec) : 10=1.56%, 20=15.76%, 50=23.57%, 100=26.82%, 250=29.04% lat (msec) : 500=3.26% cpu : usr=0.05%, sys=1.67%, ctx=1299, 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=375KiB/s (384kB/s), 89.8KiB/s-101KiB/s (91.0kB/s-103kB/s), io=23.4MiB (24.5MB), run=61973-63955msec WRITE: bw=394KiB/s (403kB/s), 97.3KiB/s-102KiB/s (99.7kB/s-105kB/s), io=24.6MiB (25.8MB), run=61973-63955msec 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=157150: Mon Aug 17 00:51:56 2026 read: IOPS=1, BW=1279KiB/s (1310kB/s)(7168KiB/5604msec) clat (msec): min=169, max=346, avg=221.92, stdev=60.84 lat (msec): min=169, max=346, avg=221.92, stdev=60.84 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 174], | 30.00th=[ 197], 40.00th=[ 197], 50.00th=[ 207], 60.00th=[ 218], | 70.00th=[ 218], 80.00th=[ 247], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 1932, max= 4023, per=75.30%, avg=2751.50, stdev=978.37, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=914KiB/s (936kB/s)(5120KiB/5604msec); 0 zone resets clat (msec): min=140, max=2498, avg=766.15, stdev=977.00 lat (msec): min=140, max=2498, avg=766.27, stdev=976.99 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 1932, max= 2048, per=39.07%, avg=1998.75, stdev=53.38, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 250=58.33%, 500=33.33%, >=2000=8.33% cpu : usr=0.04%, sys=11.57%, ctx=206, 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=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=157151: Mon Aug 17 00:51:56 2026 read: IOPS=0, BW=391KiB/s (400kB/s)(2048KiB/5237msec) clat (msec): min=257, max=450, avg=353.96, stdev=136.32 lat (msec): min=257, max=450, avg=353.96, stdev=136.32 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 257], 50.00th=[ 257], 60.00th=[ 451], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 1477, max= 2031, per=48.00%, avg=1754.00, stdev=391.74, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1955KiB/s (2002kB/s)(10.0MiB/5237msec); 0 zone resets clat (msec): min=138, max=908, avg=423.50, stdev=272.02 lat (msec): min=138, max=908, avg=423.82, stdev=272.22 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 190], | 30.00th=[ 201], 40.00th=[ 226], 50.00th=[ 239], 60.00th=[ 393], | 70.00th=[ 542], 80.00th=[ 701], 90.00th=[ 709], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 2003, max= 5941, per=58.77%, avg=3006.83, stdev=1641.99, samples=6 iops : min= 1, max= 5, avg= 2.17, stdev= 1.60, samples=6 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=14.46%, ctx=222, 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=157152: Mon Aug 17 00:51:56 2026 read: IOPS=1, BW=1536KiB/s (1573kB/s)(6144KiB/4000msec) clat (msec): min=2, max=981, avg=321.10, stdev=343.77 lat (msec): min=2, max=981, avg=321.11, stdev=343.77 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 109], | 30.00th=[ 109], 40.00th=[ 251], 50.00th=[ 251], 60.00th=[ 266], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 2003, max= 4023, per=69.19%, avg=2528.25, stdev=996.69, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1536KiB/s (1573kB/s)(6144KiB/4000msec); 0 zone resets clat (msec): min=101, max=1181, avg=340.20, stdev=414.37 lat (msec): min=101, max=1181, avg=340.33, stdev=414.36 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 211], | 70.00th=[ 220], 80.00th=[ 220], 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= 2003, max= 2934, per=43.14%, avg=2207.00, stdev=406.84, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 4=8.33%, 250=58.33%, 500=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=13.90%, ctx=336, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=157153: Mon Aug 17 00:51:56 2026 read: IOPS=1, BW=1373KiB/s (1406kB/s)(5120KiB/3729msec) clat (usec): min=468, max=237086, avg=132497.55, stdev=121270.49 lat (usec): min=468, max=237088, avg=132498.98, stdev=121271.05 clat percentiles (usec): | 1.00th=[ 469], 5.00th=[ 469], 10.00th=[ 469], 20.00th=[ 469], | 30.00th=[ 562], 40.00th=[ 562], 50.00th=[198181], 60.00th=[198181], | 70.00th=[225444], 80.00th=[225444], 90.00th=[238027], 95.00th=[238027], | 99.00th=[238027], 99.50th=[238027], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1922KiB/s (1968kB/s)(7168KiB/3729msec); 0 zone resets clat (msec): min=128, max=877, avg=410.27, stdev=272.51 lat (msec): min=128, max=877, avg=410.42, stdev=272.52 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 197], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 321], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 684], 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= 1422, max= 4079, per=56.33%, avg=2881.75, stdev=1371.00, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.13%, sys=15.13%, ctx=208, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3655KiB/s (3742kB/s), 391KiB/s-1536KiB/s (400kB/s-1573kB/s), io=20.0MiB (20.0MB), run=3729-5604msec WRITE: bw=5116KiB/s (5239kB/s), 914KiB/s-1955KiB/s (936kB/s-2002kB/s), io=28.0MiB (29.4MB), run=3729-5604msec rand-rw: (groupid=0, jobs=1): err= 0: pid=157154: Mon Aug 17 00:51:56 2026 read: IOPS=1, BW=1423KiB/s (1457kB/s)(7168KiB/5037msec) clat (msec): min=111, max=650, avg=210.93, stdev=199.72 lat (msec): min=111, max=650, avg=210.93, stdev=199.72 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 112], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 120], 60.00th=[ 125], | 70.00th=[ 125], 80.00th=[ 245], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 2039, max= 4564, per=99.40%, avg=3472.00, stdev=1296.58, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=0, BW=1016KiB/s (1041kB/s)(5120KiB/5037msec); 0 zone resets clat (msec): min=163, max=1995, avg=694.03, stdev=754.81 lat (msec): min=164, max=1995, avg=694.17, stdev=754.78 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 1906, max= 2043, per=40.98%, avg=2003.75, stdev=65.85, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=58.33%, 500=16.67%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=4.05%, ctx=95, 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=157155: Mon Aug 17 00:51:56 2026 read: IOPS=0, BW=349KiB/s (358kB/s)(2048KiB/5863msec) clat (msec): min=123, max=357, avg=240.79, stdev=165.68 lat (msec): min=123, max=357, avg=240.80, stdev=165.68 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 124], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 1585, max= 2043, per=51.93%, avg=1814.00, stdev=323.85, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1747KiB/s (1788kB/s)(10.0MiB/5863msec); 0 zone resets clat (msec): min=133, max=1112, avg=510.80, stdev=342.28 lat (msec): min=134, max=1112, avg=511.08, stdev=342.19 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 165], | 30.00th=[ 222], 40.00th=[ 305], 50.00th=[ 338], 60.00th=[ 523], | 70.00th=[ 592], 80.00th=[ 751], 90.00th=[ 969], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 2023, max= 6131, per=73.66%, avg=3602.00, stdev=1701.74, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 250=33.33%, 500=25.00%, 750=16.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=4.49%, ctx=157, 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=157156: Mon Aug 17 00:51:56 2026 read: IOPS=1, BW=1156KiB/s (1183kB/s)(6144KiB/5316msec) clat (msec): min=115, max=757, avg=325.85, stdev=254.90 lat (msec): min=115, max=757, avg=325.85, stdev=254.90 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 284], | 70.00th=[ 502], 80.00th=[ 502], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 2039, max= 4087, per=97.31%, avg=3399.00, stdev=1177.82, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1156KiB/s (1183kB/s)(6144KiB/5316msec); 0 zone resets clat (msec): min=201, max=907, avg=551.05, stdev=241.61 lat (msec): min=201, max=908, avg=551.16, stdev=241.63 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 514], 50.00th=[ 514], 60.00th=[ 531], | 70.00th=[ 718], 80.00th=[ 718], 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= 1865, max= 2048, per=40.57%, avg=1984.00, stdev=78.19, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 250=33.33%, 500=16.67%, 750=33.33%, 1000=16.67% cpu : usr=0.00%, sys=4.18%, ctx=148, 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=157157: Mon Aug 17 00:51:56 2026 read: IOPS=0, BW=932KiB/s (954kB/s)(5120KiB/5496msec) clat (msec): min=98, max=572, avg=285.06, stdev=231.70 lat (msec): min=98, max=572, avg=285.06, stdev=231.70 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 99], | 30.00th=[ 100], 40.00th=[ 100], 50.00th=[ 157], 60.00th=[ 157], | 70.00th=[ 502], 80.00th=[ 502], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 4079, max= 4087, per=100.00%, avg=4083.00, stdev= 5.66, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1304KiB/s (1336kB/s)(7168KiB/5496msec); 0 zone resets clat (msec): min=118, max=1046, avg=542.15, stdev=369.51 lat (msec): min=118, max=1046, avg=542.61, stdev=369.51 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 236], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 426], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 1003], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 1865, max= 2048, per=40.41%, avg=1976.20, stdev=84.77, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=16.67%, 750=25.00%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=5.20%, ctx=121, 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=3493KiB/s (3577kB/s), 349KiB/s-1423KiB/s (358kB/s-1457kB/s), io=20.0MiB (20.0MB), run=5037-5863msec WRITE: bw=4890KiB/s (5008kB/s), 1016KiB/s-1747KiB/s (1041kB/s-1788kB/s), io=28.0MiB (29.4MB), run=5037-5863msec 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=157163: Mon Aug 17 00:52:09 2026 read: IOPS=1, BW=4132KiB/s (4231kB/s)(12.0MiB/2974msec) clat (msec): min=299, max=1444, avg=957.21, stdev=591.40 lat (msec): min=299, max=1444, avg=957.21, stdev=591.40 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.30%, ctx=50, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=157164: Mon Aug 17 00:52:09 2026 read: IOPS=0, BW=2491KiB/s (2551kB/s)(4096KiB/1644msec) clat (nsec): min=354091k, max=354091k, avg=354090619.00, stdev= 0.00 lat (nsec): min=354093k, max=354093k, avg=354093309.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 5962, max= 5962, per=100.00%, avg=5962.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4983KiB/s (5103kB/s)(8192KiB/1644msec); 0 zone resets clat (msec): min=510, max=643, avg=576.97, stdev=94.63 lat (msec): min=510, max=644, avg=577.47, stdev=94.69 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 7968, max= 7968, per=56.08%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=5.36%, ctx=43, 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=157165: Mon Aug 17 00:52:09 2026 write: IOPS=1, BW=6126KiB/s (6273kB/s)(12.0MiB/2006msec); 0 zone resets clat (msec): min=306, max=795, avg=619.30, stdev=271.68 lat (msec): min=306, max=796, avg=620.66, stdev=272.38 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7968, max= 8078, per=56.46%, avg=8023.00, stdev=77.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.10%, sys=5.64%, ctx=49, 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=157166: Mon Aug 17 00:52:09 2026 write: IOPS=1, BW=5329KiB/s (5457kB/s)(12.0MiB/2306msec); 0 zone resets clat (msec): min=350, max=1392, avg=748.59, stdev=563.15 lat (msec): min=351, max=1394, avg=749.40, stdev=563.51 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 502], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 6860, max= 7968, per=52.18%, avg=7414.00, stdev=783.47, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.03%, ctx=44, 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=5509KiB/s (5641kB/s), 2491KiB/s-4132KiB/s (2551kB/s-4231kB/s), io=16.0MiB (16.8MB), run=1644-2974msec WRITE: bw=13.9MiB/s (14.6MB/s), 4983KiB/s-6126KiB/s (5103kB/s-6273kB/s), io=32.0MiB (33.6MB), run=1644-2306msec rand-rw: (groupid=0, jobs=1): err= 0: pid=157168: Mon Aug 17 00:52:09 2026 read: IOPS=1, BW=5454KiB/s (5585kB/s)(12.0MiB/2253msec) clat (msec): min=524, max=880, avg=750.57, stdev=196.22 lat (msec): min=524, max=880, avg=750.57, stdev=196.22 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 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= 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) : 750=33.33%, 1000=66.67% cpu : usr=0.27%, sys=12.43%, ctx=368, majf=0, minf=7 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=157169: Mon Aug 17 00:52:09 2026 read: IOPS=0, BW=1474KiB/s (1509kB/s)(4096KiB/2779msec) clat (nsec): min=862215k, max=862215k, avg=862215494.00, stdev= 0.00 lat (nsec): min=862218k, max=862218k, avg=862218495.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2948KiB/s (3019kB/s)(8192KiB/2779msec); 0 zone resets clat (msec): min=864, max=1046, avg=955.30, stdev=128.77 lat (msec): min=864, max=1047, avg=955.88, stdev=128.95 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 1045], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 8175, max= 8175, per=71.23%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.57%, ctx=172, 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=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=157170: Mon Aug 17 00:52:09 2026 write: IOPS=1, BW=4304KiB/s (4407kB/s)(12.0MiB/2855msec); 0 zone resets clat (msec): min=311, max=1438, avg=946.18, stdev=576.43 lat (msec): min=312, max=1451, avg=951.28, stdev=581.79 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 8110, max= 8159, per=70.88%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.71%, ctx=53, majf=0, minf=7 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=157171: Mon Aug 17 00:52:09 2026 write: IOPS=1, BW=5404KiB/s (5533kB/s)(12.0MiB/2274msec); 0 zone resets clat (msec): min=396, max=957, avg=755.30, stdev=311.25 lat (msec): min=397, max=958, avg=756.17, stdev=311.55 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8062, max= 8175, per=70.74%, 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%, 1000=66.67% cpu : usr=0.00%, sys=5.54%, ctx=46, 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 Run status group 0 (all jobs): READ: bw=5896KiB/s (6037kB/s), 1474KiB/s-5454KiB/s (1509kB/s-5585kB/s), io=16.0MiB (16.8MB), run=2253-2779msec WRITE: bw=11.2MiB/s (11.8MB/s), 2948KiB/s-5404KiB/s (3019kB/s-5533kB/s), io=32.0MiB (33.6MB), run=2274-2855msec