== sanity test 398b: DIO and buffer IO race ============== 00:15:31 (1787112931) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.40785 s, 7.9 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=145489: Wed Aug 19 00:17:54 2026 read: IOPS=12, BW=48.7KiB/s (49.8kB/s)(5992KiB/123150msec) clat (usec): min=35, max=895786, avg=40590.47, stdev=39147.83 lat (usec): min=36, max=895787, avg=40592.53, stdev=39148.98 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 60], 10.00th=[ 11338], 20.00th=[ 19006], | 30.00th=[ 23987], 40.00th=[ 28705], 50.00th=[ 34341], 60.00th=[ 40109], | 70.00th=[ 47973], 80.00th=[ 57934], 90.00th=[ 73925], 95.00th=[ 91751], | 99.00th=[158335], 99.50th=[206570], 99.90th=[446694], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 7, max= 118, per=25.36%, avg=48.69, stdev=20.33, samples=240 iops : min= 1, max= 29, avg=11.53, stdev= 5.10, samples=240 write: IOPS=12, BW=51.1KiB/s (52.4kB/s)(6296KiB/123150msec); 0 zone resets clat (usec): min=1185, max=311416, avg=39335.28, stdev=39665.82 lat (usec): min=1186, max=311418, avg=39337.46, stdev=39665.57 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1450], 10.00th=[ 2311], 20.00th=[ 4883], | 30.00th=[ 9503], 40.00th=[ 18482], 50.00th=[ 28705], 60.00th=[ 39060], | 70.00th=[ 51119], 80.00th=[ 66323], 90.00th=[ 91751], 95.00th=[116917], | 99.00th=[175113], 99.50th=[200279], 99.90th=[235930], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 119, per=25.46%, avg=51.17, stdev=20.77, samples=240 iops : min= 1, max= 29, avg=12.14, stdev= 5.21, samples=240 lat (usec) : 50=0.39%, 100=3.58%, 250=0.20%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=4.46%, 4=4.39%, 10=7.32%, 20=11.56%, 50=38.57% lat (msec) : 100=23.83%, 250=5.34%, 500=0.13%, 1000=0.03% cpu : usr=0.09%, sys=5.67%, ctx=6715, 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=145490: Wed Aug 19 00:17:54 2026 read: IOPS=11, BW=47.9KiB/s (49.0kB/s)(5940KiB/124032msec) clat (usec): min=32, max=295791, avg=40424.46, stdev=30836.95 lat (usec): min=33, max=295792, avg=40426.97, stdev=30837.30 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 62], 10.00th=[ 1516], 20.00th=[ 19006], | 30.00th=[ 24249], 40.00th=[ 28705], 50.00th=[ 34341], 60.00th=[ 40633], | 70.00th=[ 49021], 80.00th=[ 59507], 90.00th=[ 76022], 95.00th=[ 91751], | 99.00th=[173016], 99.50th=[189793], 99.90th=[217056], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 126, per=24.83%, avg=47.67, stdev=20.15, samples=243 iops : min= 1, max= 31, avg=11.27, stdev= 5.06, samples=243 write: IOPS=12, BW=51.2KiB/s (52.4kB/s)(6348KiB/124032msec); 0 zone resets clat (usec): min=1198, max=826268, avg=40057.62, stdev=45486.94 lat (usec): min=1200, max=826269, avg=40060.66, stdev=45487.24 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1516], 10.00th=[ 2540], 20.00th=[ 5342], | 30.00th=[ 9765], 40.00th=[ 19530], 50.00th=[ 28967], 60.00th=[ 39060], | 70.00th=[ 50594], 80.00th=[ 68682], 90.00th=[ 91751], 95.00th=[116917], | 99.00th=[191890], 99.50th=[252707], 99.90th=[350225], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 7, max= 183, per=25.29%, avg=50.82, stdev=22.57, samples=244 iops : min= 1, max= 45, avg=12.06, stdev= 5.65, samples=244 lat (usec) : 50=0.68%, 100=3.55%, 250=0.39%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=3.87%, 4=4.39%, 10=7.68%, 20=10.61%, 50=39.10% lat (msec) : 100=23.80%, 250=5.47%, 500=0.29%, 1000=0.03% cpu : usr=0.08%, sys=5.59%, ctx=6748, 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=145492: Wed Aug 19 00:17:54 2026 read: IOPS=12, BW=49.3KiB/s (50.5kB/s)(6028KiB/122153msec) clat (usec): min=27, max=422616, avg=40368.32, stdev=32276.86 lat (usec): min=28, max=422617, avg=40371.12, stdev=32278.42 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 7898], 20.00th=[ 19792], | 30.00th=[ 24511], 40.00th=[ 29230], 50.00th=[ 34866], 60.00th=[ 41681], | 70.00th=[ 48497], 80.00th=[ 58459], 90.00th=[ 73925], 95.00th=[ 88605], | 99.00th=[149947], 99.50th=[214959], 99.90th=[392168], 99.95th=[421528], | 99.99th=[421528] bw ( KiB/s): min= 7, max= 125, per=25.56%, avg=49.07, stdev=21.41, samples=240 iops : min= 1, max= 31, avg=11.61, stdev= 5.35, samples=240 write: IOPS=12, BW=51.2KiB/s (52.5kB/s)(6260KiB/122153msec); 0 zone resets clat (usec): min=1195, max=877139, avg=38915.67, stdev=45626.27 lat (usec): min=1197, max=877141, avg=38919.83, stdev=45626.74 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1500], 10.00th=[ 2507], 20.00th=[ 5080], | 30.00th=[ 8586], 40.00th=[ 16450], 50.00th=[ 28181], 60.00th=[ 38011], | 70.00th=[ 50594], 80.00th=[ 64750], 90.00th=[ 87557], 95.00th=[110625], | 99.00th=[189793], 99.50th=[231736], 99.90th=[316670], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 7, max= 101, per=25.53%, avg=51.32, stdev=19.36, samples=238 iops : min= 1, max= 25, avg=12.18, stdev= 4.89, samples=238 lat (usec) : 50=0.39%, 100=3.55%, 250=0.42%, 500=0.16%, 750=0.13% lat (msec) : 2=4.20%, 4=4.17%, 10=8.59%, 20=10.58%, 50=38.87% lat (msec) : 100=24.06%, 250=4.59%, 500=0.26%, 1000=0.03% cpu : usr=0.09%, sys=5.71%, ctx=6677, 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=145493: Wed Aug 19 00:17:54 2026 read: IOPS=12, BW=48.6KiB/s (49.8kB/s)(6052KiB/124537msec) clat (usec): min=32, max=311833, avg=39918.91, stdev=29593.67 lat (usec): min=32, max=311834, avg=39925.86, stdev=29594.60 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 62], 10.00th=[ 10945], 20.00th=[ 19268], | 30.00th=[ 24249], 40.00th=[ 28967], 50.00th=[ 34341], 60.00th=[ 40633], | 70.00th=[ 47973], 80.00th=[ 58459], 90.00th=[ 72877], 95.00th=[ 92799], | 99.00th=[147850], 99.50th=[166724], 99.90th=[263193], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 103, per=25.22%, avg=48.42, stdev=21.24, samples=243 iops : min= 1, max= 25, avg=11.46, stdev= 5.33, samples=243 write: IOPS=12, BW=50.1KiB/s (51.3kB/s)(6236KiB/124537msec); 0 zone resets clat (usec): min=1149, max=850399, avg=40852.77, stdev=46453.08 lat (usec): min=1151, max=850400, avg=40858.12, stdev=46452.83 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1434], 10.00th=[ 2245], 20.00th=[ 4883], | 30.00th=[ 10159], 40.00th=[ 20579], 50.00th=[ 29492], 60.00th=[ 39060], | 70.00th=[ 52691], 80.00th=[ 66323], 90.00th=[ 95945], 95.00th=[116917], | 99.00th=[183501], 99.50th=[208667], 99.90th=[450888], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 7, max= 143, per=24.81%, avg=49.86, stdev=20.85, samples=243 iops : min= 1, max= 35, avg=11.83, stdev= 5.22, samples=243 lat (usec) : 50=0.65%, 100=3.22%, 250=0.33%, 500=0.13%, 1000=0.03% lat (msec) : 2=4.59%, 4=3.81%, 10=7.19%, 20=10.74%, 50=39.29% lat (msec) : 100=23.83%, 250=5.99%, 500=0.16%, 1000=0.03% cpu : usr=0.08%, sys=5.77%, ctx=6910, 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=193KiB/s (197kB/s), 47.9KiB/s-49.3KiB/s (49.0kB/s-50.5kB/s), io=23.4MiB (24.6MB), run=122153-124537msec WRITE: bw=202KiB/s (207kB/s), 50.1KiB/s-51.2KiB/s (51.3kB/s-52.5kB/s), io=24.6MiB (25.7MB), run=122153-124537msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145486: Wed Aug 19 00:20:54 2026 read: IOPS=4, BW=19.7KiB/s (20.2kB/s)(5992KiB/303616msec) clat (msec): min=5, max=916, avg=40.91, stdev=39.30 lat (msec): min=5, max=916, avg=40.91, stdev=39.30 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 56], 90.00th=[ 77], 95.00th=[ 100], | 99.00th=[ 171], 99.50th=[ 197], 99.90th=[ 342], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 80, per=28.78%, avg=22.45, stdev=14.18, samples=514 iops : min= 1, max= 20, avg= 4.99, stdev= 3.60, samples=514 write: IOPS=5, BW=20.7KiB/s (21.2kB/s)(6296KiB/303616msec); 0 zone resets clat (msec): min=40, max=506, avg=153.70, stdev=66.28 lat (msec): min=40, max=506, avg=153.70, stdev=66.28 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 70], 10.00th=[ 80], 20.00th=[ 99], | 30.00th=[ 112], 40.00th=[ 127], 50.00th=[ 142], 60.00th=[ 159], | 70.00th=[ 178], 80.00th=[ 201], 90.00th=[ 245], 95.00th=[ 275], | 99.00th=[ 363], 99.50th=[ 397], 99.90th=[ 498], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7, max= 55, per=24.72%, avg=20.27, stdev= 8.74, samples=595 iops : min= 1, max= 13, avg= 4.43, stdev= 2.24, samples=595 lat (msec) : 10=1.33%, 20=11.17%, 50=24.35%, 100=20.05%, 250=38.41% lat (msec) : 500=4.62%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.37%, ctx=5605, 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=145487: Wed Aug 19 00:20:54 2026 read: IOPS=4, BW=19.5KiB/s (19.0kB/s)(5940KiB/304786msec) clat (msec): min=6, max=852, avg=40.23, stdev=39.34 lat (msec): min=6, max=852, avg=40.23, stdev=39.34 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 75], 95.00th=[ 100], | 99.00th=[ 190], 99.50th=[ 224], 99.90th=[ 351], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 95, per=28.47%, avg=22.21, stdev=14.94, samples=514 iops : min= 1, max= 23, avg= 4.92, stdev= 3.76, samples=514 write: IOPS=5, BW=20.8KiB/s (21.3kB/s)(6348KiB/304786msec); 0 zone resets clat (msec): min=42, max=578, avg=154.15, stdev=66.85 lat (msec): min=42, max=578, avg=154.16, stdev=66.85 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 69], 10.00th=[ 81], 20.00th=[ 100], | 30.00th=[ 114], 40.00th=[ 128], 50.00th=[ 142], 60.00th=[ 159], | 70.00th=[ 178], 80.00th=[ 203], 90.00th=[ 243], 95.00th=[ 284], | 99.00th=[ 376], 99.50th=[ 405], 99.90th=[ 514], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 48, per=24.86%, avg=20.39, stdev= 8.48, samples=595 iops : min= 1, max= 12, avg= 4.46, stdev= 2.19, samples=595 lat (msec) : 10=1.40%, 20=11.23%, 50=24.32%, 100=19.76%, 250=38.61% lat (msec) : 500=4.56%, 750=0.10%, 1000=0.03% cpu : usr=0.05%, sys=1.34%, ctx=5593, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145488: Wed Aug 19 00:20:54 2026 read: IOPS=4, BW=19.8KiB/s (20.3kB/s)(6028KiB/304293msec) clat (msec): min=7, max=385, avg=42.74, stdev=35.81 lat (msec): min=7, max=385, avg=42.74, stdev=35.81 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 48], 80.00th=[ 61], 90.00th=[ 83], 95.00th=[ 107], | 99.00th=[ 186], 99.50th=[ 262], 99.90th=[ 292], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 112, per=28.28%, avg=22.06, stdev=14.87, samples=525 iops : min= 1, max= 28, avg= 4.89, stdev= 3.76, samples=525 write: IOPS=5, BW=20.6KiB/s (21.1kB/s)(6260KiB/304293msec); 0 zone resets clat (msec): min=42, max=931, avg=153.02, stdev=66.62 lat (msec): min=42, max=931, avg=153.02, stdev=66.62 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 71], 10.00th=[ 84], 20.00th=[ 100], | 30.00th=[ 116], 40.00th=[ 128], 50.00th=[ 142], 60.00th=[ 157], | 70.00th=[ 174], 80.00th=[ 199], 90.00th=[ 236], 95.00th=[ 271], | 99.00th=[ 355], 99.50th=[ 405], 99.90th=[ 550], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 48, per=24.66%, avg=20.22, stdev= 8.51, samples=593 iops : min= 1, max= 12, avg= 4.42, stdev= 2.18, samples=593 lat (msec) : 10=1.33%, 20=10.77%, 50=23.34%, 100=21.22%, 250=39.03% lat (msec) : 500=4.23%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.39%, ctx=5551, 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=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=145491: Wed Aug 19 00:20:54 2026 read: IOPS=4, BW=19.9KiB/s (20.4kB/s)(6052KiB/303929msec) clat (msec): min=6, max=348, avg=40.43, stdev=34.27 lat (msec): min=6, max=348, avg=40.44, stdev=34.27 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 57], 90.00th=[ 77], 95.00th=[ 102], | 99.00th=[ 192], 99.50th=[ 226], 99.90th=[ 296], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 7, max= 103, per=29.09%, avg=22.69, stdev=15.56, samples=514 iops : min= 1, max= 25, avg= 5.05, stdev= 3.93, samples=514 write: IOPS=5, BW=20.5KiB/s (21.0kB/s)(6236KiB/303929msec); 0 zone resets clat (msec): min=34, max=1023, avg=155.43, stdev=70.17 lat (msec): min=34, max=1023, avg=155.44, stdev=70.17 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 71], 10.00th=[ 83], 20.00th=[ 101], | 30.00th=[ 114], 40.00th=[ 128], 50.00th=[ 142], 60.00th=[ 159], | 70.00th=[ 178], 80.00th=[ 207], 90.00th=[ 243], 95.00th=[ 279], | 99.00th=[ 372], 99.50th=[ 405], 99.90th=[ 489], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 55, per=24.42%, avg=20.02, stdev= 8.77, samples=597 iops : min= 1, max= 13, avg= 4.37, stdev= 2.23, samples=597 lat (msec) : 10=1.92%, 20=11.13%, 50=23.76%, 100=20.05%, 250=38.57% lat (msec) : 500=4.52%, 2000=0.03% cpu : usr=0.04%, sys=1.36%, ctx=5536, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=78.8KiB/s (80.7kB/s), 19.5KiB/s-19.9KiB/s (19.0kB/s-20.4kB/s), io=23.4MiB (24.6MB), run=303616-304786msec WRITE: bw=82.5KiB/s (84.5kB/s), 20.5KiB/s-20.8KiB/s (21.0kB/s-21.3kB/s), io=24.6MiB (25.7MB), run=303616-304786msec 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=145558: Wed Aug 19 00:21:30 2026 read: IOPS=14, BW=226KiB/s (231kB/s)(5920KiB/26203msec) clat (usec): min=36, max=288908, avg=34316.94, stdev=29380.92 lat (usec): min=36, max=288909, avg=34327.72, stdev=29380.30 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 103], | 30.00th=[ 21103], 40.00th=[ 28705], 50.00th=[ 33817], 60.00th=[ 38011], | 70.00th=[ 44303], 80.00th=[ 51643], 90.00th=[ 66323], 95.00th=[ 78119], | 99.00th=[128451], 99.50th=[156238], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 31, max= 471, per=25.41%, avg=225.18, stdev=94.48, samples=51 iops : min= 1, max= 29, avg=13.35, stdev= 5.92, samples=51 write: IOPS=15, BW=243KiB/s (249kB/s)(6368KiB/26203msec); 0 zone resets clat (usec): min=1566, max=324627, avg=33171.66, stdev=39111.76 lat (usec): min=1570, max=324631, avg=33174.16, stdev=39111.80 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2278], 10.00th=[ 3130], 20.00th=[ 5014], | 30.00th=[ 7898], 40.00th=[ 11600], 50.00th=[ 19268], 60.00th=[ 28705], | 70.00th=[ 39060], 80.00th=[ 57410], 90.00th=[ 78119], 95.00th=[104334], | 99.00th=[208667], 99.50th=[221250], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 29, max= 415, per=26.17%, avg=244.14, stdev=108.84, samples=51 iops : min= 1, max= 25, avg=14.53, stdev= 6.81, samples=51 lat (usec) : 50=1.43%, 100=8.07%, 250=0.91%, 750=0.39% lat (msec) : 2=1.82%, 4=5.73%, 10=11.85%, 20=10.16%, 50=36.59% lat (msec) : 100=18.88%, 250=3.91%, 500=0.26% cpu : usr=0.06%, sys=6.73%, ctx=1499, 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=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=145559: Wed Aug 19 00:21:30 2026 read: IOPS=13, BW=213KiB/s (218kB/s)(5744KiB/27006msec) clat (usec): min=37, max=130848, avg=35548.12, stdev=25828.83 lat (usec): min=37, max=130849, avg=35549.57, stdev=25828.86 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 537], | 30.00th=[ 22676], 40.00th=[ 28705], 50.00th=[ 34866], 60.00th=[ 40109], | 70.00th=[ 47449], 80.00th=[ 55837], 90.00th=[ 70779], 95.00th=[ 80217], | 99.00th=[102237], 99.50th=[111674], 99.90th=[130548], 99.95th=[130548], | 99.99th=[130548] bw ( KiB/s): min= 29, max= 470, per=25.46%, avg=225.54, stdev=89.95, samples=50 iops : min= 1, max= 29, avg=13.36, stdev= 5.69, samples=50 write: IOPS=15, BW=242KiB/s (248kB/s)(6544KiB/27006msec); 0 zone resets clat (usec): min=1548, max=274651, avg=33963.95, stdev=41317.01 lat (usec): min=1550, max=274654, avg=33967.00, stdev=41317.37 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2245], 10.00th=[ 3654], 20.00th=[ 5669], | 30.00th=[ 8160], 40.00th=[ 11207], 50.00th=[ 19006], 60.00th=[ 27919], | 70.00th=[ 36963], 80.00th=[ 55837], 90.00th=[ 84411], 95.00th=[109577], | 99.00th=[214959], 99.50th=[240124], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 31, max= 448, per=26.02%, avg=242.75, stdev=110.55, samples=53 iops : min= 1, max= 28, avg=14.45, stdev= 6.97, samples=53 lat (usec) : 50=1.43%, 100=6.77%, 250=0.65%, 500=0.26%, 750=0.39% lat (msec) : 2=1.43%, 4=4.43%, 10=13.80%, 20=10.16%, 50=36.46% lat (msec) : 100=20.44%, 250=3.52%, 500=0.26% cpu : usr=0.09%, sys=6.73%, ctx=1514, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145560: Wed Aug 19 00:21:30 2026 read: IOPS=14, BW=240KiB/s (246kB/s)(6256KiB/26083msec) clat (usec): min=36, max=212034, avg=36311.11, stdev=27791.51 lat (usec): min=36, max=212036, avg=36312.46, stdev=27791.55 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 62], 10.00th=[ 72], 20.00th=[ 17957], | 30.00th=[ 23462], 40.00th=[ 29492], 50.00th=[ 34341], 60.00th=[ 38536], | 70.00th=[ 45351], 80.00th=[ 53216], 90.00th=[ 65274], 95.00th=[ 84411], | 99.00th=[119014], 99.50th=[193987], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 63, max= 470, per=27.24%, avg=241.31, stdev=81.22, samples=51 iops : min= 3, max= 29, avg=14.37, stdev= 5.08, samples=51 write: IOPS=14, BW=231KiB/s (237kB/s)(6032KiB/26083msec); 0 zone resets clat (usec): min=1661, max=284273, avg=31299.59, stdev=34569.07 lat (usec): min=1664, max=284275, avg=31302.65, stdev=34568.65 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2114], 10.00th=[ 3621], 20.00th=[ 5604], | 30.00th=[ 9634], 40.00th=[ 12780], 50.00th=[ 20317], 60.00th=[ 27919], | 70.00th=[ 35914], 80.00th=[ 53740], 90.00th=[ 73925], 95.00th=[ 90702], | 99.00th=[185598], 99.50th=[187696], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 64, max= 435, per=24.59%, avg=229.43, stdev=81.70, samples=51 iops : min= 4, max= 27, avg=13.61, stdev= 5.12, samples=51 lat (usec) : 50=0.91%, 100=6.51%, 250=0.65%, 750=0.13% lat (msec) : 2=2.08%, 4=4.56%, 10=9.38%, 20=11.85%, 50=40.49% lat (msec) : 100=20.18%, 250=3.12%, 500=0.13% cpu : usr=0.12%, sys=6.89%, ctx=1570, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145561: Wed Aug 19 00:21:30 2026 read: IOPS=14, BW=232KiB/s (238kB/s)(6032KiB/25981msec) clat (usec): min=35, max=204885, avg=35583.78, stdev=28437.35 lat (usec): min=35, max=204886, avg=35586.20, stdev=28437.12 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 7767], | 30.00th=[ 22938], 40.00th=[ 28705], 50.00th=[ 32900], 60.00th=[ 39584], | 70.00th=[ 47449], 80.00th=[ 53740], 90.00th=[ 67634], 95.00th=[ 77071], | 99.00th=[122160], 99.50th=[187696], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 31, max= 466, per=26.59%, avg=235.62, stdev=93.62, samples=50 iops : min= 1, max= 29, avg=14.00, stdev= 5.91, samples=50 write: IOPS=15, BW=241KiB/s (247kB/s)(6256KiB/25981msec); 0 zone resets clat (usec): min=1518, max=332743, avg=31149.88, stdev=38367.68 lat (usec): min=1519, max=332746, avg=31152.78, stdev=38368.05 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 1876], 10.00th=[ 2868], 20.00th=[ 5276], | 30.00th=[ 7635], 40.00th=[ 10683], 50.00th=[ 17433], 60.00th=[ 24773], | 70.00th=[ 36963], 80.00th=[ 53740], 90.00th=[ 71828], 95.00th=[ 95945], | 99.00th=[187696], 99.50th=[256902], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 31, max= 560, per=25.90%, avg=241.63, stdev=100.29, samples=51 iops : min= 1, max= 35, avg=14.37, stdev= 6.29, samples=51 lat (usec) : 50=1.04%, 100=7.94%, 250=0.39%, 750=0.26% lat (msec) : 2=3.39%, 4=3.78%, 10=12.89%, 20=11.46%, 50=34.51% lat (msec) : 100=21.48%, 250=2.47%, 500=0.39% cpu : usr=0.09%, sys=6.96%, ctx=1480, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=887KiB/s (908kB/s), 213KiB/s-240KiB/s (218kB/s-246kB/s), io=23.4MiB (24.5MB), run=25981-27006msec WRITE: bw=933KiB/s (956kB/s), 231KiB/s-243KiB/s (237kB/s-249kB/s), io=24.6MiB (25.8MB), run=25981-27006msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145554: Wed Aug 19 00:22:09 2026 read: IOPS=5, BW=88.5KiB/s (90.6kB/s)(5920KiB/66887msec) clat (msec): min=7, max=335, avg=35.71, stdev=37.16 lat (msec): min=7, max=335, avg=35.71, stdev=37.16 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 46], 90.00th=[ 72], 95.00th=[ 117], | 99.00th=[ 188], 99.50th=[ 288], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 415, per=28.01%, avg=100.28, stdev=65.83, samples=116 iops : min= 1, max= 25, avg= 5.47, stdev= 4.11, samples=116 write: IOPS=5, BW=95.2KiB/s (97.5kB/s)(6368KiB/66887msec); 0 zone resets clat (msec): min=44, max=503, avg=134.38, stdev=58.82 lat (msec): min=44, max=503, avg=134.38, stdev=58.82 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 77], 20.00th=[ 88], | 30.00th=[ 101], 40.00th=[ 110], 50.00th=[ 121], 60.00th=[ 136], | 70.00th=[ 150], 80.00th=[ 174], 90.00th=[ 209], 95.00th=[ 243], | 99.00th=[ 326], 99.50th=[ 388], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 27, max= 191, per=25.36%, avg=95.35, stdev=39.04, samples=131 iops : min= 1, max= 11, avg= 5.15, stdev= 2.47, samples=131 lat (msec) : 10=1.30%, 20=18.36%, 50=20.31%, 100=20.83%, 250=36.59% lat (msec) : 500=2.47%, 750=0.13% cpu : usr=0.04%, sys=1.51%, ctx=1349, 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=145555: Wed Aug 19 00:22:09 2026 read: IOPS=5, BW=86.1KiB/s (88.2kB/s)(5744KiB/66708msec) clat (msec): min=6, max=405, avg=35.52, stdev=39.47 lat (msec): min=6, max=405, avg=35.52, stdev=39.47 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 30], 80.00th=[ 43], 90.00th=[ 72], 95.00th=[ 120], | 99.00th=[ 201], 99.50th=[ 241], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 27, max= 383, per=26.87%, avg=96.20, stdev=69.29, samples=118 iops : min= 1, max= 23, avg= 5.20, stdev= 4.34, samples=118 write: IOPS=6, BW=98.1KiB/s (100kB/s)(6544KiB/66708msec); 0 zone resets clat (msec): min=43, max=485, avg=131.18, stdev=58.45 lat (msec): min=43, max=485, avg=131.19, stdev=58.44 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 67], 10.00th=[ 72], 20.00th=[ 86], | 30.00th=[ 96], 40.00th=[ 107], 50.00th=[ 118], 60.00th=[ 131], | 70.00th=[ 146], 80.00th=[ 167], 90.00th=[ 215], 95.00th=[ 247], | 99.00th=[ 317], 99.50th=[ 347], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 31, max= 191, per=26.13%, avg=98.24, stdev=41.46, samples=131 iops : min= 1, max= 11, avg= 5.33, stdev= 2.63, samples=131 lat (msec) : 10=1.30%, 20=18.36%, 50=19.01%, 100=23.18%, 250=35.81% lat (msec) : 500=2.34% cpu : usr=0.04%, sys=1.50%, ctx=1402, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145556: Wed Aug 19 00:22:09 2026 read: IOPS=6, BW=97.3KiB/s (99.7kB/s)(6256KiB/64283msec) clat (msec): min=7, max=413, avg=35.51, stdev=38.15 lat (msec): min=7, max=413, avg=35.51, stdev=38.15 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 32], 80.00th=[ 42], 90.00th=[ 77], 95.00th=[ 97], | 99.00th=[ 186], 99.50th=[ 300], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 30, max= 320, per=30.07%, avg=107.63, stdev=72.26, samples=115 iops : min= 1, max= 20, avg= 5.92, stdev= 4.57, samples=115 write: IOPS=5, BW=93.8KiB/s (96.1kB/s)(6032KiB/64283msec); 0 zone resets clat (msec): min=30, max=433, avg=133.23, stdev=59.13 lat (msec): min=30, max=433, avg=133.23, stdev=59.13 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 73], 20.00th=[ 87], | 30.00th=[ 97], 40.00th=[ 107], 50.00th=[ 123], 60.00th=[ 136], | 70.00th=[ 153], 80.00th=[ 174], 90.00th=[ 213], 95.00th=[ 249], | 99.00th=[ 355], 99.50th=[ 376], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 30, max= 190, per=25.23%, avg=94.86, stdev=39.34, samples=125 iops : min= 1, max= 11, avg= 5.12, stdev= 2.50, samples=125 lat (msec) : 10=1.04%, 20=17.32%, 50=24.74%, 100=21.35%, 250=32.94% lat (msec) : 500=2.60% cpu : usr=0.02%, sys=1.68%, ctx=1448, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145557: Wed Aug 19 00:22:10 2026 read: IOPS=5, BW=92.3KiB/s (94.5kB/s)(6032KiB/65378msec) clat (msec): min=7, max=331, avg=36.06, stdev=36.73 lat (msec): min=7, max=331, avg=36.06, stdev=36.73 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 43], 90.00th=[ 77], 95.00th=[ 112], | 99.00th=[ 188], 99.50th=[ 288], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 286, per=29.44%, avg=105.41, stdev=61.51, samples=112 iops : min= 1, max= 17, avg= 5.75, stdev= 3.84, samples=112 write: IOPS=5, BW=95.7KiB/s (97.0kB/s)(6256KiB/65378msec); 0 zone resets clat (msec): min=45, max=511, avg=132.29, stdev=60.19 lat (msec): min=45, max=511, avg=132.30, stdev=60.19 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 67], 10.00th=[ 74], 20.00th=[ 85], | 30.00th=[ 97], 40.00th=[ 106], 50.00th=[ 118], 60.00th=[ 133], | 70.00th=[ 150], 80.00th=[ 169], 90.00th=[ 211], 95.00th=[ 234], | 99.00th=[ 363], 99.50th=[ 405], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 31, max= 191, per=25.74%, avg=96.79, stdev=39.22, samples=127 iops : min= 1, max= 11, avg= 5.24, stdev= 2.53, samples=127 lat (msec) : 10=1.30%, 20=14.97%, 50=25.13%, 100=21.61%, 250=34.90% lat (msec) : 500=1.95%, 750=0.13% cpu : usr=0.04%, sys=1.44%, ctx=1374, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=358KiB/s (367kB/s), 86.1KiB/s-97.3KiB/s (88.2kB/s-99.7kB/s), io=23.4MiB (24.5MB), run=64283-66887msec WRITE: bw=377KiB/s (386kB/s), 93.8KiB/s-98.1KiB/s (96.1kB/s-100kB/s), io=24.6MiB (25.8MB), run=64283-66887msec 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=145586: Wed Aug 19 00:22:26 2026 read: IOPS=2, BW=2141KiB/s (2192kB/s)(7168KiB/3348msec) clat (msec): min=69, max=481, avg=190.49, stdev=149.56 lat (msec): min=69, max=481, avg=190.49, stdev=149.56 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 97], | 30.00th=[ 115], 40.00th=[ 115], 50.00th=[ 127], 60.00th=[ 138], | 70.00th=[ 138], 80.00th=[ 309], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 2048, max= 5657, per=100.00%, avg=3933.67, stdev=1809.97, samples=3 iops : min= 2, max= 5, avg= 3.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1529KiB/s (1566kB/s)(5120KiB/3348msec); 0 zone resets clat (msec): min=226, max=754, avg=396.88, stdev=212.29 lat (msec): min=226, max=754, avg=396.98, stdev=212.29 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 363], 60.00th=[ 363], | 70.00th=[ 393], 80.00th=[ 393], 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= 1992, max= 3961, per=60.23%, avg=2511.00, stdev=967.00, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=16.67%, 250=41.67%, 500=33.33%, 1000=8.33% cpu : usr=0.00%, sys=5.77%, ctx=84, 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=145587: Wed Aug 19 00:22:26 2026 read: IOPS=0, BW=407KiB/s (417kB/s)(2048KiB/5031msec) clat (msec): min=131, max=412, avg=271.85, stdev=198.47 lat (msec): min=131, max=412, avg=271.86, stdev=198.47 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 132], | 30.00th=[ 132], 40.00th=[ 132], 50.00th=[ 132], 60.00th=[ 414], | 70.00th=[ 414], 80.00th=[ 414], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 2043, max= 2048, per=68.69%, avg=2045.50, stdev= 3.54, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=2035KiB/s (2084kB/s)(10.0MiB/5031msec); 0 zone resets clat (msec): min=145, max=1109, avg=428.85, stdev=271.51 lat (msec): min=145, max=1109, avg=428.95, stdev=271.50 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 266], | 30.00th=[ 288], 40.00th=[ 305], 50.00th=[ 317], 60.00th=[ 376], | 70.00th=[ 401], 80.00th=[ 456], 90.00th=[ 634], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1992, max= 4096, per=57.05%, avg=2378.33, stdev=841.76, samples=6 iops : min= 1, max= 4, avg= 1.83, stdev= 1.17, samples=6 lat (msec) : 250=16.67%, 500=66.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=6.08%, ctx=120, 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=145588: Wed Aug 19 00:22:26 2026 read: IOPS=1, BW=1619KiB/s (1658kB/s)(6144KiB/3795msec) clat (msec): min=124, max=393, avg=203.50, stdev=96.99 lat (msec): min=124, max=393, avg=203.50, stdev=96.99 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 192], | 70.00th=[ 199], 80.00th=[ 199], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 2043, max= 4096, per=100.00%, avg=3366.67, stdev=1148.31, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1619KiB/s (1658kB/s)(6144KiB/3795msec); 0 zone resets clat (msec): min=220, max=570, avg=418.38, stdev=129.43 lat (msec): min=220, max=570, avg=418.48, stdev=129.44 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 481], 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= 1980, max= 2048, per=48.39%, avg=2017.20, stdev=30.28, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=50.00%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=4.61%, ctx=83, 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=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=145589: Wed Aug 19 00:22:26 2026 read: IOPS=0, BW=745KiB/s (762kB/s)(5120KiB/6876msec) clat (msec): min=81, max=521, avg=279.19, stdev=158.53 lat (msec): min=81, max=521, avg=279.19, stdev=158.53 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 253], 60.00th=[ 253], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 2043, max= 6144, per=100.00%, avg=4093.50, stdev=2899.84, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1042KiB/s (1067kB/s)(7168KiB/6876msec); 0 zone resets clat (msec): min=225, max=2598, avg=760.60, stdev=859.23 lat (msec): min=225, max=2598, avg=760.72, stdev=859.25 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 247], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 313], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 1020], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 2048, max= 4087, per=72.96%, avg=3041.75, stdev=1148.25, samples=4 iops : min= 2, max= 3, avg= 2.50, stdev= 0.58, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.89%, ctx=93, 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=2978KiB/s (3050kB/s), 407KiB/s-2141KiB/s (417kB/s-2192kB/s), io=20.0MiB (20.0MB), run=3348-6876msec WRITE: bw=4170KiB/s (4270kB/s), 1042KiB/s-2035KiB/s (1067kB/s-2084kB/s), io=28.0MiB (29.4MB), run=3348-6876msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145591: Wed Aug 19 00:22:26 2026 read: IOPS=2, BW=2211KiB/s (2264kB/s)(7168KiB/3242msec) clat (usec): min=1318, max=262788, avg=184976.57, stdev=91783.49 lat (usec): min=1318, max=262789, avg=184978.16, stdev=91783.90 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1319], 10.00th=[ 1319], 20.00th=[132645], | 30.00th=[200279], 40.00th=[200279], 50.00th=[217056], 60.00th=[223347], | 70.00th=[223347], 80.00th=[258999], 90.00th=[263193], 95.00th=[263193], | 99.00th=[263193], 99.50th=[263193], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 2019, max= 4055, per=100.00%, avg=2945.67, stdev=1030.22, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1579KiB/s (1617kB/s)(5120KiB/3242msec); 0 zone resets clat (msec): min=158, max=572, avg=353.33, stdev=162.04 lat (msec): min=158, max=572, avg=353.42, stdev=162.06 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 253], 40.00th=[ 253], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 447], 80.00th=[ 447], 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= 1935, max= 2031, per=48.60%, avg=2003.00, stdev=45.61, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 2=8.33%, 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=19.44%, ctx=177, 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=145592: Wed Aug 19 00:22:26 2026 read: IOPS=0, BW=444KiB/s (455kB/s)(2048KiB/4609msec) clat (msec): min=210, max=243, avg=226.97, stdev=23.23 lat (msec): min=210, max=243, avg=226.97, stdev=23.23 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 211], 60.00th=[ 245], | 70.00th=[ 245], 80.00th=[ 245], 90.00th=[ 245], 95.00th=[ 245], | 99.00th=[ 245], 99.50th=[ 245], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 1372, max= 2019, per=57.59%, avg=1695.50, stdev=457.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2222KiB/s (2275kB/s)(10.0MiB/4609msec); 0 zone resets clat (msec): min=151, max=802, avg=409.88, stdev=189.75 lat (msec): min=151, max=803, avg=410.13, stdev=189.80 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 222], | 30.00th=[ 232], 40.00th=[ 351], 50.00th=[ 409], 60.00th=[ 418], | 70.00th=[ 451], 80.00th=[ 518], 90.00th=[ 550], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1935, max= 4087, per=56.04%, avg=2309.43, stdev=784.67, samples=7 iops : min= 1, max= 3, avg= 1.43, stdev= 0.79, samples=7 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=14.95%, 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=145593: Wed Aug 19 00:22:26 2026 read: IOPS=0, BW=883KiB/s (904kB/s)(6144KiB/6956msec) clat (usec): min=513, max=4036.0k, avg=754458.58, stdev=1609898.69 lat (usec): min=514, max=4036.0k, avg=754459.84, stdev=1609898.35 clat percentiles (usec): | 1.00th=[ 515], 5.00th=[ 515], 10.00th=[ 515], | 20.00th=[ 865], 30.00th=[ 865], 40.00th=[ 115868], | 50.00th=[ 115868], 60.00th=[ 158335], 70.00th=[ 214959], | 80.00th=[ 214959], 90.00th=[4043310], 95.00th=[4043310], | 99.00th=[4043310], 99.50th=[4043310], 99.90th=[4043310], | 99.95th=[4043310], 99.99th=[4043310] bw ( KiB/s): min= 1980, max= 6095, per=100.00%, avg=3368.67, stdev=2361.21, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=0, BW=883KiB/s (904kB/s)(6144KiB/6956msec); 0 zone resets clat (msec): min=49, max=1323, avg=383.33, stdev=486.47 lat (msec): min=50, max=1323, avg=383.43, stdev=486.46 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 77], | 30.00th=[ 77], 40.00th=[ 157], 50.00th=[ 157], 60.00th=[ 207], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 1446, max= 4063, per=57.99%, avg=2389.75, stdev=1148.42, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 50=8.33%, 100=8.33%, 250=41.67%, 500=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.03%, sys=8.94%, ctx=520, 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=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=145594: Wed Aug 19 00:22:26 2026 read: IOPS=0, BW=757KiB/s (775kB/s)(5120KiB/6764msec) clat (usec): min=1781, max=215172, avg=122655.38, stdev=110612.95 lat (usec): min=1782, max=215173, avg=122656.56, stdev=110613.05 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 1778], 10.00th=[ 1778], 20.00th=[ 1778], | 30.00th=[ 2114], 40.00th=[ 2114], 50.00th=[187696], 60.00th=[187696], | 70.00th=[206570], 80.00th=[206570], 90.00th=[214959], 95.00th=[214959], | 99.00th=[214959], 99.50th=[214959], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 4039, max= 4096, per=100.00%, avg=4067.50, stdev=40.31, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1060KiB/s (1085kB/s)(7168KiB/6764msec); 0 zone resets clat (msec): min=238, max=2563, avg=853.17, stdev=805.04 lat (msec): min=238, max=2564, avg=853.29, stdev=805.03 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 330], | 30.00th=[ 388], 40.00th=[ 388], 50.00th=[ 642], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 1053], 90.00th=[ 2567], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 1935, max= 2048, per=48.92%, avg=2015.83, stdev=41.37, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 2=8.33%, 4=8.33%, 250=33.33%, 500=16.67%, 750=8.33% lat (msec) : 1000=8.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=6.51%, ctx=192, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2944KiB/s (3015kB/s), 444KiB/s-2211KiB/s (455kB/s-2264kB/s), io=20.0MiB (20.0MB), run=3242-6956msec WRITE: bw=4122KiB/s (4221kB/s), 883KiB/s-2222KiB/s (904kB/s-2275kB/s), io=28.0MiB (29.4MB), run=3242-6956msec 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=145601: Wed Aug 19 00:22:39 2026 read: IOPS=1, BW=5508KiB/s (5640kB/s)(12.0MiB/2231msec) clat (msec): min=415, max=843, avg=663.71, stdev=221.88 lat (msec): min=415, max=843, avg=663.71, stdev=221.88 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 6005, max= 8192, per=100.00%, avg=7098.50, stdev=1546.44, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=13.54%, ctx=231, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145603: Wed Aug 19 00:22:39 2026 read: IOPS=0, BW=1692KiB/s (1732kB/s)(4096KiB/2421msec) clat (nsec): min=722581k, max=722581k, avg=722581069.00, stdev= 0.00 lat (nsec): min=722585k, max=722585k, avg=722584731.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] 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 write: IOPS=0, BW=3384KiB/s (3465kB/s)(8192KiB/2421msec); 0 zone resets clat (msec): min=767, max=771, avg=769.36, stdev= 2.96 lat (msec): min=767, max=773, avg=770.75, stdev= 4.56 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 768], 50.00th=[ 768], 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= 8078, max= 8078, per=77.41%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=10.29%, ctx=139, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145604: Wed Aug 19 00:22:39 2026 write: IOPS=0, BW=3913KiB/s (4007kB/s)(12.0MiB/3140msec); 0 zone resets clat (msec): min=297, max=2221, avg=1019.59, stdev=1047.68 lat (msec): min=298, max=2221, avg=1020.19, stdev=1047.52 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 2232], 80.00th=[ 2232], 90.00th=[ 2232], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min=16000, max=16000, per=100.00%, avg=16000.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.68%, ctx=54, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145606: Wed Aug 19 00:22:39 2026 write: IOPS=1, BW=4313KiB/s (4417kB/s)(12.0MiB/2849msec); 0 zone resets clat (msec): min=502, max=1344, avg=906.15, stdev=422.24 lat (msec): min=502, max=1344, avg=906.61, stdev=422.25 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 6400, max= 8078, per=69.37%, avg=7239.00, stdev=1186.53, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.07%, sys=4.60%, ctx=56, 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=6767KiB/s (6930kB/s), 1692KiB/s-5508KiB/s (1732kB/s-5640kB/s), io=16.0MiB (16.8MB), run=2231-2421msec WRITE: bw=10.2MiB/s (10.7MB/s), 3384KiB/s-4313KiB/s (3465kB/s-4417kB/s), io=32.0MiB (33.6MB), run=2421-3140msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145602: Wed Aug 19 00:22:40 2026 read: IOPS=2, BW=9366KiB/s (9591kB/s)(12.0MiB/1312msec) clat (msec): min=220, max=516, avg=411.24, stdev=165.77 lat (msec): min=220, max=516, avg=411.24, stdev=165.77 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 220], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 518], 80.00th=[ 518], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 7001, max= 7953, per=100.00%, avg=7477.00, stdev=673.17, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=7.55%, ctx=54, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145605: Wed Aug 19 00:22:40 2026 read: IOPS=0, BW=1336KiB/s (1368kB/s)(4096KiB/3065msec) clat (nsec): min=538284k, max=538284k, avg=538283553.00, stdev= 0.00 lat (nsec): min=538287k, max=538287k, avg=538287250.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7968, max= 7968, per=100.00%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2673KiB/s (2737kB/s)(8192KiB/3065msec); 0 zone resets clat (msec): min=709, max=1616, avg=1163.21, stdev=641.70 lat (msec): min=709, max=1617, avg=1163.58, stdev=641.73 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 1620], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 8062, max= 8062, per=93.53%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.25%, ctx=50, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145607: Wed Aug 19 00:22:40 2026 write: IOPS=0, BW=3233KiB/s (3310kB/s)(12.0MiB/3801msec); 0 zone resets clat (msec): min=341, max=2599, avg=1199.55, stdev=1222.52 lat (msec): min=341, max=2599, avg=1199.99, stdev=1222.48 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 2601], 80.00th=[ 2601], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 8143, max= 8192, per=94.75%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.97%, ctx=59, 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=145608: Wed Aug 19 00:22:40 2026 write: IOPS=0, BW=3847KiB/s (3940kB/s)(12.0MiB/3194msec); 0 zone resets clat (msec): min=756, max=1497, avg=1030.45, stdev=406.60 lat (msec): min=758, max=1498, avg=1031.39, stdev=406.14 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 7968, max= 8159, per=93.54%, avg=8063.50, stdev=135.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.07%, ctx=37, 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=5346KiB/s (5474kB/s), 1336KiB/s-9366KiB/s (1368kB/s-9591kB/s), io=16.0MiB (16.8MB), run=1312-3065msec WRITE: bw=8621KiB/s (8828kB/s), 2673KiB/s-3847KiB/s (2737kB/s-3940kB/s), io=32.0MiB (33.6MB), run=3065-3801msec