== sanity test 398b: DIO and buffer IO race ============== 18:50:28 (1786747828) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.50038 s, 11.2 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145258: Fri Aug 14 18:52:28 2026 read: IOPS=14, BW=58.3KiB/s (59.7kB/s)(5992KiB/102825msec) clat (usec): min=28, max=825659, avg=33842.98, stdev=32717.30 lat (usec): min=29, max=825660, avg=33845.58, stdev=32716.74 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 57], 10.00th=[ 186], 20.00th=[ 15795], | 30.00th=[ 19792], 40.00th=[ 23725], 50.00th=[ 28443], 60.00th=[ 33817], | 70.00th=[ 41157], 80.00th=[ 49021], 90.00th=[ 63177], 95.00th=[ 79168], | 99.00th=[119014], 99.50th=[135267], 99.90th=[371196], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 6, max= 112, per=25.52%, avg=57.92, stdev=23.20, samples=202 iops : min= 1, max= 28, avg=13.88, stdev= 5.83, samples=202 write: IOPS=15, BW=61.2KiB/s (62.7kB/s)(6296KiB/102825msec); 0 zone resets clat (usec): min=1175, max=454294, avg=32927.19, stdev=33934.62 lat (usec): min=1176, max=454294, avg=32937.88, stdev=33941.75 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1450], 10.00th=[ 2212], 20.00th=[ 4621], | 30.00th=[ 8455], 40.00th=[ 16909], 50.00th=[ 25560], 60.00th=[ 32637], | 70.00th=[ 43254], 80.00th=[ 54264], 90.00th=[ 74974], 95.00th=[ 95945], | 99.00th=[137364], 99.50th=[162530], 99.90th=[312476], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 7, max= 128, per=25.72%, avg=61.22, stdev=22.40, samples=201 iops : min= 1, max= 32, avg=14.71, stdev= 5.66, samples=201 lat (usec) : 50=0.75%, 100=3.71%, 250=0.46%, 500=0.16%, 1000=0.03% lat (msec) : 2=4.49%, 4=4.98%, 10=7.58%, 20=14.68%, 50=41.80% lat (msec) : 100=18.36%, 250=2.86%, 500=0.10%, 1000=0.03% cpu : usr=0.06%, sys=6.29%, ctx=6934, 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=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=145259: Fri Aug 14 18:52:28 2026 read: IOPS=14, BW=58.2KiB/s (59.6kB/s)(5940KiB/102139msec) clat (usec): min=28, max=793240, avg=33541.51, stdev=30904.51 lat (usec): min=29, max=793241, avg=33542.71, stdev=30904.51 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 562], 20.00th=[ 15795], | 30.00th=[ 20055], 40.00th=[ 23725], 50.00th=[ 28443], 60.00th=[ 34341], | 70.00th=[ 41157], 80.00th=[ 48497], 90.00th=[ 62129], 95.00th=[ 76022], | 99.00th=[116917], 99.50th=[135267], 99.90th=[193987], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 7, max= 119, per=25.55%, avg=58.00, stdev=22.96, samples=201 iops : min= 1, max= 29, avg=13.90, stdev= 5.79, samples=201 write: IOPS=15, BW=62.2KiB/s (63.6kB/s)(6348KiB/102139msec); 0 zone resets clat (usec): min=1088, max=397972, avg=32785.71, stdev=33232.79 lat (usec): min=1089, max=397973, avg=32788.48, stdev=33233.08 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1483], 10.00th=[ 2278], 20.00th=[ 4047], | 30.00th=[ 7308], 40.00th=[ 15533], 50.00th=[ 25560], 60.00th=[ 34866], | 70.00th=[ 43779], 80.00th=[ 55837], 90.00th=[ 74974], 95.00th=[ 92799], | 99.00th=[137364], 99.50th=[168821], 99.90th=[258999], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 15, max= 127, per=26.05%, avg=62.01, stdev=23.32, samples=201 iops : min= 3, max= 31, avg=14.91, stdev= 5.89, samples=201 lat (usec) : 50=0.85%, 100=3.09%, 250=0.72%, 500=0.16%, 750=0.10% lat (usec) : 1000=0.03% lat (msec) : 2=4.26%, 4=5.99%, 10=8.53%, 20=13.54%, 50=41.11% lat (msec) : 100=19.04%, 250=2.47%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=6.38%, ctx=6837, 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=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=145260: Fri Aug 14 18:52:28 2026 read: IOPS=14, BW=57.2KiB/s (58.6kB/s)(6028KiB/105329msec) clat (usec): min=27, max=260657, avg=34016.75, stdev=25687.82 lat (usec): min=27, max=260658, avg=34019.05, stdev=25687.18 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 57], 10.00th=[ 979], 20.00th=[ 15926], | 30.00th=[ 20579], 40.00th=[ 24773], 50.00th=[ 29230], 60.00th=[ 34866], | 70.00th=[ 41681], 80.00th=[ 50070], 90.00th=[ 64226], 95.00th=[ 76022], | 99.00th=[115868], 99.50th=[154141], 99.90th=[206570], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 15, max= 133, per=25.17%, avg=57.13, stdev=21.92, samples=206 iops : min= 3, max= 33, avg=13.67, stdev= 5.51, samples=206 write: IOPS=14, BW=59.4KiB/s (60.9kB/s)(6260KiB/105329msec); 0 zone resets clat (usec): min=1123, max=840089, avg=34330.91, stdev=39096.63 lat (usec): min=1124, max=840092, avg=34335.61, stdev=39094.63 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1434], 10.00th=[ 2311], 20.00th=[ 4359], | 30.00th=[ 8586], 40.00th=[ 18482], 50.00th=[ 25822], 60.00th=[ 34341], | 70.00th=[ 44827], 80.00th=[ 58459], 90.00th=[ 76022], 95.00th=[ 93848], | 99.00th=[137364], 99.50th=[160433], 99.90th=[434111], 99.95th=[843056], | 99.99th=[843056] bw ( KiB/s): min= 7, max= 127, per=24.80%, avg=59.02, stdev=21.89, samples=207 iops : min= 1, max= 31, avg=14.14, stdev= 5.51, samples=207 lat (usec) : 50=0.75%, 100=3.55%, 250=0.52%, 500=0.07%, 1000=0.03% lat (msec) : 2=4.43%, 4=5.14%, 10=7.39%, 20=13.25%, 50=41.44% lat (msec) : 100=20.41%, 250=2.90%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=6.47%, ctx=7029, 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=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=145261: Fri Aug 14 18:52:28 2026 read: IOPS=14, BW=57.7KiB/s (59.1kB/s)(6052KiB/104830msec) clat (usec): min=36, max=805773, avg=34259.82, stdev=32529.78 lat (usec): min=36, max=805774, avg=34261.46, stdev=32529.78 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 56], 10.00th=[ 898], 20.00th=[ 16712], | 30.00th=[ 20579], 40.00th=[ 24773], 50.00th=[ 29230], 60.00th=[ 34341], | 70.00th=[ 40633], 80.00th=[ 49546], 90.00th=[ 63701], 95.00th=[ 77071], | 99.00th=[116917], 99.50th=[141558], 99.90th=[375391], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 7, max= 111, per=25.20%, avg=57.20, stdev=21.16, samples=206 iops : min= 1, max= 27, avg=13.69, stdev= 5.31, samples=206 write: IOPS=14, BW=59.5KiB/s (60.9kB/s)(6236KiB/104830msec); 0 zone resets clat (usec): min=1058, max=405388, avg=33832.93, stdev=33996.28 lat (usec): min=1059, max=405390, avg=33834.51, stdev=33996.15 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1582], 10.00th=[ 2474], 20.00th=[ 4293], | 30.00th=[ 8029], 40.00th=[ 17695], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 44827], 80.00th=[ 58459], 90.00th=[ 74974], 95.00th=[ 95945], | 99.00th=[141558], 99.50th=[168821], 99.90th=[254804], 99.95th=[404751], | 99.99th=[404751] bw ( KiB/s): min= 7, max= 143, per=24.82%, avg=59.07, stdev=22.93, samples=206 iops : min= 1, max= 35, avg=14.16, stdev= 5.78, samples=206 lat (usec) : 50=0.88%, 100=3.48%, 250=0.39%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=3.68%, 4=5.76%, 10=7.91%, 20=13.15%, 50=41.80% lat (msec) : 100=19.66%, 250=2.90%, 500=0.13%, 1000=0.03% cpu : usr=0.07%, sys=6.36%, ctx=6987, 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=228KiB/s (233kB/s), 57.2KiB/s-58.3KiB/s (58.6kB/s-59.7kB/s), io=23.4MiB (24.6MB), run=102139-105329msec WRITE: bw=239KiB/s (244kB/s), 59.4KiB/s-62.2KiB/s (60.9kB/s-63.6kB/s), io=24.6MiB (25.7MB), run=102139-105329msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145253: Fri Aug 14 18:54:18 2026 read: IOPS=7, BW=28.2KiB/s (28.9kB/s)(5992KiB/212402msec) clat (msec): min=5, max=840, avg=28.74, stdev=37.17 lat (msec): min=5, max=840, avg=28.74, stdev=37.17 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 36], 90.00th=[ 59], 95.00th=[ 85], | 99.00th=[ 150], 99.50th=[ 218], 99.90th=[ 443], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 103, per=26.78%, avg=29.72, stdev=19.07, samples=392 iops : min= 1, max= 25, avg= 6.83, stdev= 4.80, samples=392 write: IOPS=7, BW=29.6KiB/s (30.4kB/s)(6296KiB/212402msec); 0 zone resets clat (msec): min=32, max=526, avg=107.38, stdev=48.53 lat (msec): min=32, max=526, avg=107.38, stdev=48.53 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 52], 10.00th=[ 60], 20.00th=[ 68], | 30.00th=[ 79], 40.00th=[ 86], 50.00th=[ 96], 60.00th=[ 108], | 70.00th=[ 123], 80.00th=[ 142], 90.00th=[ 171], 95.00th=[ 203], | 99.00th=[ 259], 99.50th=[ 284], 99.90th=[ 372], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 7, max= 63, per=25.14%, avg=29.16, stdev=12.46, samples=419 iops : min= 1, max= 15, avg= 6.68, stdev= 3.17, samples=419 lat (msec) : 10=5.92%, 20=21.22%, 50=17.25%, 100=30.44%, 250=24.32% lat (msec) : 500=0.78%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.60%, ctx=5229, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145254: Fri Aug 14 18:54:18 2026 read: IOPS=6, BW=27.6KiB/s (28.3kB/s)(5940KiB/215292msec) clat (msec): min=4, max=811, avg=28.67, stdev=35.29 lat (msec): min=4, max=811, avg=28.67, stdev=35.29 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 27], 80.00th=[ 38], 90.00th=[ 64], 95.00th=[ 90], | 99.00th=[ 138], 99.50th=[ 180], 99.90th=[ 342], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 104, per=26.55%, avg=29.47, stdev=19.50, samples=392 iops : min= 1, max= 26, avg= 6.76, stdev= 4.92, samples=392 write: IOPS=7, BW=29.5KiB/s (30.2kB/s)(6348KiB/215292msec); 0 zone resets clat (msec): min=28, max=493, avg=108.62, stdev=52.55 lat (msec): min=28, max=493, avg=108.62, stdev=52.55 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 52], 10.00th=[ 59], 20.00th=[ 68], | 30.00th=[ 78], 40.00th=[ 87], 50.00th=[ 96], 60.00th=[ 107], | 70.00th=[ 122], 80.00th=[ 142], 90.00th=[ 178], 95.00th=[ 205], | 99.00th=[ 284], 99.50th=[ 334], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 7, max= 79, per=25.01%, avg=29.01, stdev=12.51, samples=425 iops : min= 1, max= 19, avg= 6.64, stdev= 3.18, samples=425 lat (msec) : 10=6.35%, 20=21.58%, 50=15.40%, 100=31.32%, 250=24.09% lat (msec) : 500=1.24%, 1000=0.03% cpu : usr=0.04%, sys=1.61%, ctx=5331, 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=145255: Fri Aug 14 18:54:18 2026 read: IOPS=7, BW=28.2KiB/s (28.9kB/s)(6028KiB/213610msec) clat (msec): min=5, max=200, avg=28.85, stdev=27.52 lat (msec): min=5, max=200, avg=28.85, stdev=27.52 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 41], 90.00th=[ 65], 95.00th=[ 87], | 99.00th=[ 142], 99.50th=[ 157], 99.90th=[ 192], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 7, max= 95, per=26.45%, avg=29.36, stdev=19.17, samples=398 iops : min= 1, max= 23, avg= 6.73, stdev= 4.82, samples=398 write: IOPS=7, BW=29.3KiB/s (30.0kB/s)(6260KiB/213610msec); 0 zone resets clat (msec): min=30, max=886, avg=108.50, stdev=54.66 lat (msec): min=30, max=886, avg=108.50, stdev=54.66 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 51], 10.00th=[ 59], 20.00th=[ 70], | 30.00th=[ 78], 40.00th=[ 86], 50.00th=[ 94], 60.00th=[ 106], | 70.00th=[ 122], 80.00th=[ 142], 90.00th=[ 174], 95.00th=[ 211], | 99.00th=[ 279], 99.50th=[ 359], 99.90th=[ 409], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 64, per=24.89%, avg=28.87, stdev=12.87, samples=420 iops : min= 1, max= 16, avg= 6.61, stdev= 3.27, samples=420 lat (msec) : 10=6.35%, 20=20.41%, 50=17.51%, 100=30.89%, 250=23.70% lat (msec) : 500=1.11%, 1000=0.03% cpu : usr=0.04%, sys=1.62%, ctx=5378, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145256: Fri Aug 14 18:54:18 2026 read: IOPS=7, BW=28.5KiB/s (29.2kB/s)(6052KiB/211978msec) clat (msec): min=4, max=282, avg=27.35, stdev=26.47 lat (msec): min=4, max=282, avg=27.35, stdev=26.47 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 38], 90.00th=[ 58], 95.00th=[ 82], | 99.00th=[ 129], 99.50th=[ 157], 99.90th=[ 220], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 7, max= 127, per=27.20%, avg=30.19, stdev=19.18, samples=390 iops : min= 1, max= 31, avg= 6.94, stdev= 4.82, samples=390 write: IOPS=7, BW=29.4KiB/s (30.1kB/s)(6236KiB/211978msec); 0 zone resets clat (msec): min=30, max=931, avg=109.19, stdev=57.03 lat (msec): min=30, max=931, avg=109.20, stdev=57.02 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 54], 10.00th=[ 60], 20.00th=[ 69], | 30.00th=[ 78], 40.00th=[ 85], 50.00th=[ 95], 60.00th=[ 107], | 70.00th=[ 120], 80.00th=[ 140], 90.00th=[ 178], 95.00th=[ 211], | 99.00th=[ 296], 99.50th=[ 363], 99.90th=[ 502], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 56, per=24.97%, avg=28.96, stdev=12.67, samples=418 iops : min= 1, max= 14, avg= 6.63, stdev= 3.21, samples=418 lat (msec) : 10=6.41%, 20=21.84%, 50=16.24%, 100=31.15%, 250=23.21% lat (msec) : 500=1.07%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.61%, ctx=5367, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=112KiB/s (114kB/s), 27.6KiB/s-28.5KiB/s (28.3kB/s-29.2kB/s), io=23.4MiB (24.6MB), run=211978-215292msec WRITE: bw=117KiB/s (120kB/s), 29.3KiB/s-29.6KiB/s (30.0kB/s-30.4kB/s), io=24.6MiB (25.7MB), run=211978-215292msec 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=145310: Fri Aug 14 18:54:51 2026 read: IOPS=15, BW=247KiB/s (253kB/s)(5920KiB/23965msec) clat (usec): min=35, max=328702, avg=33441.42, stdev=32108.71 lat (usec): min=36, max=328702, avg=33446.53, stdev=32107.00 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 55], 10.00th=[ 61], 20.00th=[ 114], | 30.00th=[ 20055], 40.00th=[ 25560], 50.00th=[ 29492], 60.00th=[ 35390], | 70.00th=[ 41157], 80.00th=[ 49546], 90.00th=[ 61080], 95.00th=[ 79168], | 99.00th=[168821], 99.50th=[214959], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 94, max= 476, per=24.50%, avg=244.74, stdev=86.99, samples=47 iops : min= 5, max= 29, avg=14.53, stdev= 5.45, samples=47 write: IOPS=16, BW=266KiB/s (272kB/s)(6368KiB/23965msec); 0 zone resets clat (usec): min=1577, max=268826, avg=28993.73, stdev=32799.41 lat (usec): min=1578, max=268827, avg=28995.95, stdev=32799.36 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2057], 10.00th=[ 2966], 20.00th=[ 4752], | 30.00th=[ 8848], 40.00th=[ 12387], 50.00th=[ 18482], 60.00th=[ 24773], | 70.00th=[ 33162], 80.00th=[ 47449], 90.00th=[ 69731], 95.00th=[ 86508], | 99.00th=[170918], 99.50th=[210764], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 63, max= 541, per=25.23%, avg=265.17, stdev=116.51, samples=47 iops : min= 3, max= 33, avg=15.83, stdev= 7.25, samples=47 lat (usec) : 50=1.82%, 100=7.29%, 250=0.65%, 500=0.39% lat (msec) : 2=2.08%, 4=6.51%, 10=9.38%, 20=12.76%, 50=40.62% lat (msec) : 100=15.63%, 250=2.60%, 500=0.26% cpu : usr=0.11%, sys=7.52%, ctx=1609, 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=145311: Fri Aug 14 18:54:51 2026 read: IOPS=15, BW=247KiB/s (253kB/s)(5744KiB/23246msec) clat (usec): min=41, max=133820, avg=33717.70, stdev=22406.79 lat (usec): min=41, max=133821, avg=33718.72, stdev=22406.85 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 16909], | 30.00th=[ 22938], 40.00th=[ 27919], 50.00th=[ 31327], 60.00th=[ 36439], | 70.00th=[ 43254], 80.00th=[ 50070], 90.00th=[ 61080], 95.00th=[ 71828], | 99.00th=[101188], 99.50th=[116917], 99.90th=[133694], 99.95th=[133694], | 99.99th=[133694] bw ( KiB/s): min= 49, max= 447, per=24.80%, avg=247.78, stdev=96.69, samples=45 iops : min= 3, max= 27, avg=14.73, stdev= 6.02, samples=45 write: IOPS=17, BW=282KiB/s (288kB/s)(6544KiB/23246msec); 0 zone resets clat (usec): min=1554, max=257402, avg=27102.92, stdev=29202.51 lat (usec): min=1555, max=257404, avg=27104.84, stdev=29202.57 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2147], 10.00th=[ 2999], 20.00th=[ 4948], | 30.00th=[ 6915], 40.00th=[ 10421], 50.00th=[ 17957], 60.00th=[ 25297], | 70.00th=[ 33424], 80.00th=[ 46400], 90.00th=[ 66847], 95.00th=[ 80217], | 99.00th=[114820], 99.50th=[160433], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 95, max= 479, per=26.61%, avg=279.67, stdev=97.40, samples=45 iops : min= 5, max= 29, avg=16.76, stdev= 6.11, samples=45 lat (usec) : 50=0.52%, 100=4.95%, 250=0.39%, 500=0.39%, 1000=0.13% lat (msec) : 2=1.95%, 4=6.25%, 10=13.02%, 20=11.72%, 50=41.80% lat (msec) : 100=16.80%, 250=1.95%, 500=0.13% cpu : usr=0.06%, sys=7.86%, ctx=1595, 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=145312: Fri Aug 14 18:54:51 2026 read: IOPS=16, BW=263KiB/s (269kB/s)(6256KiB/23786msec) clat (usec): min=36, max=148725, avg=32388.35, stdev=24168.87 lat (usec): min=36, max=148725, avg=32389.36, stdev=24168.88 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 56], 10.00th=[ 69], 20.00th=[ 13304], | 30.00th=[ 20317], 40.00th=[ 26870], 50.00th=[ 30802], 60.00th=[ 35914], | 70.00th=[ 41157], 80.00th=[ 48497], 90.00th=[ 64750], 95.00th=[ 76022], | 99.00th=[102237], 99.50th=[129500], 99.90th=[147850], 99.95th=[147850], | 99.99th=[147850] bw ( KiB/s): min= 95, max= 447, per=26.58%, avg=265.54, stdev=90.36, samples=46 iops : min= 5, max= 27, avg=15.85, stdev= 5.66, samples=46 write: IOPS=15, BW=254KiB/s (260kB/s)(6032KiB/23786msec); 0 zone resets clat (usec): min=1600, max=181168, avg=29367.70, stdev=30620.39 lat (usec): min=1602, max=181171, avg=29372.95, stdev=30617.89 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2311], 10.00th=[ 3392], 20.00th=[ 5800], | 30.00th=[ 7767], 40.00th=[ 11207], 50.00th=[ 19006], 60.00th=[ 27395], | 70.00th=[ 36963], 80.00th=[ 47449], 90.00th=[ 67634], 95.00th=[ 90702], | 99.00th=[137364], 99.50th=[173016], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 31, max= 503, per=24.00%, avg=252.28, stdev=107.73, samples=46 iops : min= 1, max= 31, avg=15.00, stdev= 6.74, samples=46 lat (usec) : 50=1.04%, 100=6.25%, 250=0.91%, 500=0.78%, 1000=0.13% lat (msec) : 2=1.82%, 4=4.95%, 10=11.98%, 20=12.24%, 50=41.15% lat (msec) : 100=16.15%, 250=2.60% cpu : usr=0.06%, sys=7.56%, ctx=1616, 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=145313: Fri Aug 14 18:54:51 2026 read: IOPS=15, BW=253KiB/s (259kB/s)(6032KiB/23822msec) clat (usec): min=39, max=322428, avg=35243.74, stdev=35148.63 lat (usec): min=39, max=322429, avg=35244.66, stdev=35148.61 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 67], 20.00th=[ 8029], | 30.00th=[ 21627], 40.00th=[ 26870], 50.00th=[ 30802], 60.00th=[ 35390], | 70.00th=[ 42206], 80.00th=[ 51119], 90.00th=[ 68682], 95.00th=[ 78119], | 99.00th=[170918], 99.50th=[304088], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 95, max= 384, per=25.06%, avg=250.33, stdev=72.32, samples=46 iops : min= 5, max= 24, avg=14.89, stdev= 4.49, samples=46 write: IOPS=16, BW=263KiB/s (269kB/s)(6256KiB/23822msec); 0 zone resets clat (usec): min=1467, max=124380, avg=26817.91, stdev=27252.77 lat (usec): min=1469, max=124382, avg=26826.79, stdev=27247.75 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1958], 10.00th=[ 2671], 20.00th=[ 4359], | 30.00th=[ 6587], 40.00th=[ 9896], 50.00th=[ 17695], 60.00th=[ 25035], | 70.00th=[ 34341], 80.00th=[ 46400], 90.00th=[ 69731], 95.00th=[ 83362], | 99.00th=[114820], 99.50th=[124257], 99.90th=[124257], 99.95th=[124257], | 99.99th=[124257] bw ( KiB/s): min= 94, max= 570, per=24.91%, avg=261.76, stdev=100.75, samples=46 iops : min= 5, max= 35, avg=15.61, stdev= 6.32, samples=46 lat (usec) : 50=0.91%, 100=6.25%, 250=1.30%, 500=0.65%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=3.12%, 4=6.25%, 10=11.59%, 20=10.94%, 50=38.93% lat (msec) : 100=17.45%, 250=2.08%, 500=0.26% cpu : usr=0.07%, sys=7.10%, ctx=1573, 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=999KiB/s (1023kB/s), 247KiB/s-263KiB/s (253kB/s-269kB/s), io=23.4MiB (24.5MB), run=23246-23965msec WRITE: bw=1052KiB/s (1077kB/s), 254KiB/s-282KiB/s (260kB/s-288kB/s), io=24.6MiB (25.8MB), run=23246-23965msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145305: Fri Aug 14 18:55:22 2026 read: IOPS=6, BW=110KiB/s (112kB/s)(5920KiB/54042msec) clat (msec): min=5, max=241, avg=31.08, stdev=30.44 lat (msec): min=5, max=241, avg=31.08, stdev=30.44 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 39], 90.00th=[ 67], 95.00th=[ 106], | 99.00th=[ 150], 99.50th=[ 182], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 31, max= 288, per=25.74%, avg=112.75, stdev=68.20, samples=102 iops : min= 1, max= 18, avg= 6.36, stdev= 4.31, samples=102 write: IOPS=7, BW=118KiB/s (121kB/s)(6368KiB/54042msec); 0 zone resets clat (msec): min=39, max=360, avg=106.54, stdev=48.65 lat (msec): min=39, max=360, avg=106.54, stdev=48.65 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 55], 10.00th=[ 60], 20.00th=[ 70], | 30.00th=[ 79], 40.00th=[ 86], 50.00th=[ 93], 60.00th=[ 103], | 70.00th=[ 116], 80.00th=[ 138], 90.00th=[ 178], 95.00th=[ 199], | 99.00th=[ 288], 99.50th=[ 355], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 223, per=25.54%, avg=117.75, stdev=51.05, samples=106 iops : min= 1, max= 13, avg= 6.67, stdev= 3.28, samples=106 lat (msec) : 10=2.99%, 20=20.83%, 50=19.01%, 100=32.81%, 250=23.57% lat (msec) : 500=0.78% cpu : usr=0.03%, sys=1.76%, ctx=1381, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145306: Fri Aug 14 18:55:22 2026 read: IOPS=6, BW=105KiB/s (108kB/s)(5744KiB/54566msec) clat (msec): min=6, max=176, avg=29.42, stdev=28.52 lat (msec): min=6, max=176, avg=29.42, stdev=28.52 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 27], 80.00th=[ 35], 90.00th=[ 61], 95.00th=[ 89], | 99.00th=[ 169], 99.50th=[ 171], 99.90th=[ 178], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 22, max= 384, per=26.15%, avg=114.55, stdev=70.51, samples=98 iops : min= 1, max= 24, avg= 6.48, stdev= 4.47, samples=98 write: IOPS=7, BW=120KiB/s (123kB/s)(6544KiB/54566msec); 0 zone resets clat (msec): min=38, max=402, avg=107.42, stdev=47.58 lat (msec): min=38, max=402, avg=107.43, stdev=47.58 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 54], 10.00th=[ 62], 20.00th=[ 71], | 30.00th=[ 82], 40.00th=[ 89], 50.00th=[ 97], 60.00th=[ 108], | 70.00th=[ 118], 80.00th=[ 133], 90.00th=[ 169], 95.00th=[ 205], | 99.00th=[ 292], 99.50th=[ 321], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 31, max= 223, per=25.83%, avg=119.07, stdev=47.65, samples=107 iops : min= 1, max= 13, avg= 6.75, stdev= 3.05, samples=107 lat (msec) : 10=4.43%, 20=18.23%, 50=19.92%, 100=30.21%, 250=26.43% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=1.86%, ctx=1416, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145307: Fri Aug 14 18:55:22 2026 read: IOPS=7, BW=118KiB/s (121kB/s)(6256KiB/53025msec) clat (msec): min=6, max=180, avg=30.18, stdev=27.88 lat (msec): min=6, max=180, avg=30.20, stdev=27.88 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 41], 90.00th=[ 62], 95.00th=[ 93], | 99.00th=[ 153], 99.50th=[ 167], 99.90th=[ 182], 99.95th=[ 182], | 99.99th=[ 182] bw ( KiB/s): min= 31, max= 413, per=28.47%, avg=124.71, stdev=78.30, samples=99 iops : min= 1, max= 25, avg= 7.10, stdev= 4.96, samples=99 write: IOPS=7, BW=114KiB/s (116kB/s)(6032KiB/53025msec); 0 zone resets clat (msec): min=37, max=386, avg=108.92, stdev=46.69 lat (msec): min=37, max=386, avg=108.92, stdev=46.69 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 70], | 30.00th=[ 79], 40.00th=[ 91], 50.00th=[ 100], 60.00th=[ 109], | 70.00th=[ 124], 80.00th=[ 144], 90.00th=[ 169], 95.00th=[ 199], | 99.00th=[ 253], 99.50th=[ 271], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 31, max= 192, per=24.63%, avg=113.53, stdev=44.77, samples=104 iops : min= 1, max= 12, avg= 6.39, stdev= 2.91, samples=104 lat (msec) : 10=3.26%, 20=21.09%, 50=21.48%, 100=27.73%, 250=25.65% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.83%, ctx=1414, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145308: Fri Aug 14 18:55:22 2026 read: IOPS=6, BW=111KiB/s (114kB/s)(6032KiB/54267msec) clat (msec): min=7, max=207, avg=31.76, stdev=31.90 lat (msec): min=7, max=207, avg=31.76, stdev=31.90 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 43], 90.00th=[ 69], 95.00th=[ 102], | 99.00th=[ 171], 99.50th=[ 194], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 31, max= 318, per=27.06%, avg=118.51, stdev=75.24, samples=99 iops : min= 1, max= 19, avg= 6.73, stdev= 4.76, samples=99 write: IOPS=7, BW=115KiB/s (118kB/s)(6256KiB/54267msec); 0 zone resets clat (msec): min=38, max=357, avg=107.72, stdev=50.27 lat (msec): min=38, max=357, avg=107.73, stdev=50.27 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 71], | 30.00th=[ 78], 40.00th=[ 85], 50.00th=[ 96], 60.00th=[ 106], | 70.00th=[ 118], 80.00th=[ 134], 90.00th=[ 171], 95.00th=[ 211], | 99.00th=[ 300], 99.50th=[ 347], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 254, per=24.95%, avg=115.01, stdev=50.21, samples=107 iops : min= 1, max= 15, avg= 6.50, stdev= 3.21, samples=107 lat (msec) : 10=3.12%, 20=20.70%, 50=19.14%, 100=30.99%, 250=24.87% lat (msec) : 500=1.17% cpu : usr=0.04%, sys=1.76%, ctx=1468, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=439KiB/s (449kB/s), 105KiB/s-118KiB/s (108kB/s-121kB/s), io=23.4MiB (24.5MB), run=53025-54566msec WRITE: bw=462KiB/s (473kB/s), 114KiB/s-120KiB/s (116kB/s-123kB/s), io=24.6MiB (25.8MB), run=53025-54566msec 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=145333: Fri Aug 14 18:55:35 2026 read: IOPS=1, BW=1883KiB/s (1928kB/s)(7168KiB/3807msec) clat (msec): min=138, max=1161, avg=332.67, stdev=368.17 lat (msec): min=138, max=1161, avg=332.68, stdev=368.17 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 163], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 205], 60.00th=[ 228], | 70.00th=[ 228], 80.00th=[ 268], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 1957, max= 5851, per=89.51%, avg=3528.67, stdev=2052.67, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 write: IOPS=1, BW=1345KiB/s (1377kB/s)(5120KiB/3807msec); 0 zone resets clat (msec): min=71, max=401, avg=247.19, stdev=123.19 lat (msec): min=71, max=401, avg=247.31, stdev=123.24 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 71], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 1950, max= 3871, per=46.98%, avg=2592.67, stdev=1107.07, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=50.00%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=12.98%, ctx=452, 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=145334: Fri Aug 14 18:55:35 2026 read: IOPS=0, BW=394KiB/s (404kB/s)(2048KiB/5195msec) clat (msec): min=184, max=233, avg=208.89, stdev=34.69 lat (msec): min=184, max=233, avg=208.89, stdev=34.69 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 184], 60.00th=[ 234], | 70.00th=[ 234], 80.00th=[ 234], 90.00th=[ 234], 95.00th=[ 234], | 99.00th=[ 234], 99.50th=[ 234], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 1412, max= 1957, per=42.73%, avg=1684.50, stdev=385.37, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1971KiB/s (2018kB/s)(10.0MiB/5195msec); 0 zone resets clat (msec): min=61, max=1919, avg=469.75, stdev=552.37 lat (msec): min=61, max=1920, avg=469.83, stdev=552.37 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 62], | 30.00th=[ 80], 40.00th=[ 127], 50.00th=[ 355], 60.00th=[ 447], | 70.00th=[ 514], 80.00th=[ 523], 90.00th=[ 617], 95.00th=[ 1921], | 99.00th=[ 1921], 99.50th=[ 1921], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 1957, max= 8126, per=65.30%, avg=3603.80, stdev=2655.06, samples=5 iops : min= 1, max= 7, avg= 2.60, stdev= 2.61, samples=5 lat (msec) : 100=25.00%, 250=25.00%, 500=16.67%, 750=25.00%, 2000=8.33% cpu : usr=0.02%, sys=10.22%, ctx=116, 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=145335: Fri Aug 14 18:55:35 2026 read: IOPS=1, BW=1263KiB/s (1294kB/s)(6144KiB/4863msec) clat (usec): min=464, max=272456, avg=161136.75, stdev=91996.00 lat (usec): min=465, max=272457, avg=161137.96, stdev=91995.98 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], 20.00th=[131597], | 30.00th=[131597], 40.00th=[160433], 50.00th=[160433], 60.00th=[196084], | 70.00th=[206570], 80.00th=[206570], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 1935, max= 3878, per=62.16%, avg=2450.25, stdev=952.72, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1263KiB/s (1294kB/s)(6144KiB/4863msec); 0 zone resets clat (msec): min=111, max=2109, avg=604.69, stdev=759.64 lat (msec): min=111, max=2109, avg=604.76, stdev=759.64 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 296], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 1935, max= 2989, per=39.58%, avg=2184.20, stdev=452.25, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 500=8.33% lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=10.26%, ctx=221, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145336: Fri Aug 14 18:55:35 2026 read: IOPS=1, BW=1047KiB/s (1073kB/s)(5120KiB/4888msec) clat (usec): min=463, max=321316, avg=104125.71, stdev=148455.11 lat (usec): min=464, max=321317, avg=104126.60, stdev=148455.26 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], 20.00th=[ 465], | 30.00th=[ 494], 40.00th=[ 494], 50.00th=[ 562], 60.00th=[ 562], | 70.00th=[198181], 80.00th=[198181], 90.00th=[320865], 95.00th=[320865], | 99.00th=[320865], 99.50th=[320865], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 2027, max= 5818, per=99.51%, avg=3922.50, stdev=2680.64, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1466KiB/s (1502kB/s)(7168KiB/4888msec); 0 zone resets clat (msec): min=129, max=1822, avg=580.23, stdev=572.66 lat (msec): min=129, max=1822, avg=580.30, stdev=572.67 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 224], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 498], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 1422, max= 4063, per=41.33%, avg=2280.80, stdev=1025.01, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 250=25.00%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.02%, sys=10.23%, ctx=164, 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=3942KiB/s (4037kB/s), 394KiB/s-1883KiB/s (404kB/s-1928kB/s), io=20.0MiB (20.0MB), run=3807-5195msec WRITE: bw=5519KiB/s (5652kB/s), 1263KiB/s-1971KiB/s (1294kB/s-2018kB/s), io=28.0MiB (29.4MB), run=3807-5195msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145329: Fri Aug 14 18:55:36 2026 read: IOPS=1, BW=2017KiB/s (2065kB/s)(7168KiB/3554msec) clat (msec): min=109, max=1021, avg=339.73, stdev=310.00 lat (msec): min=109, max=1021, avg=339.73, stdev=310.00 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 150], | 30.00th=[ 220], 40.00th=[ 220], 50.00th=[ 255], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 326], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 2011, max= 4087, per=75.88%, avg=2760.50, stdev=974.23, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1441KiB/s (1475kB/s)(5120KiB/3554msec); 0 zone resets clat (msec): min=149, max=259, avg=206.49, stdev=40.32 lat (msec): min=149, max=259, avg=206.73, stdev=40.25 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 207], 60.00th=[ 207], | 70.00th=[ 224], 80.00th=[ 224], 90.00th=[ 259], 95.00th=[ 259], | 99.00th=[ 259], 99.50th=[ 259], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 2048, max= 5763, per=76.68%, avg=3905.50, stdev=2626.90, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 lat (msec) : 250=58.33%, 500=33.33%, 2000=8.33% cpu : usr=0.03%, sys=3.52%, ctx=56, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145330: Fri Aug 14 18:55:36 2026 read: IOPS=0, BW=369KiB/s (377kB/s)(2048KiB/5556msec) clat (msec): min=337, max=373, avg=355.27, stdev=25.59 lat (msec): min=337, max=373, avg=355.27, stdev=25.59 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 1595, max= 2000, per=49.41%, avg=1797.50, stdev=286.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1843KiB/s (1887kB/s)(10.0MiB/5556msec); 0 zone resets clat (msec): min=118, max=1542, avg=479.81, stdev=427.11 lat (msec): min=118, max=1542, avg=479.89, stdev=427.11 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 192], | 30.00th=[ 213], 40.00th=[ 251], 50.00th=[ 266], 60.00th=[ 401], | 70.00th=[ 422], 80.00th=[ 584], 90.00th=[ 810], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 2035, max= 3849, per=54.26%, avg=2763.40, stdev=987.83, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.70%, ctx=71, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145331: Fri Aug 14 18:55:36 2026 read: IOPS=1, BW=1344KiB/s (1376kB/s)(6144KiB/4572msec) clat (msec): min=66, max=378, avg=231.20, stdev=134.54 lat (msec): min=66, max=378, avg=231.20, stdev=134.54 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 102], | 30.00th=[ 102], 40.00th=[ 192], 50.00th=[ 192], 60.00th=[ 271], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 380], 95.00th=[ 380], | 99.00th=[ 380], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 1924, max= 4000, per=89.48%, avg=3255.33, stdev=1155.67, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1344KiB/s (1376kB/s)(6144KiB/4572msec); 0 zone resets clat (msec): min=178, max=1580, avg=525.06, stdev=541.46 lat (msec): min=178, max=1580, avg=525.15, stdev=541.44 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 300], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 1924, max= 2817, per=43.12%, avg=2196.00, stdev=416.91, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.95%, ctx=50, 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=145332: Fri Aug 14 18:55:36 2026 read: IOPS=0, BW=910KiB/s (931kB/s)(5120KiB/5629msec) clat (msec): min=74, max=674, avg=242.43, stdev=250.06 lat (msec): min=74, max=674, avg=242.43, stdev=250.06 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 74], | 30.00th=[ 93], 40.00th=[ 93], 50.00th=[ 129], 60.00th=[ 129], | 70.00th=[ 243], 80.00th=[ 243], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 4000, max= 4071, per=100.00%, avg=4035.50, stdev=50.20, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1273KiB/s (1304kB/s)(7168KiB/5629msec); 0 zone resets clat (msec): min=148, max=1693, avg=608.95, stdev=521.88 lat (msec): min=149, max=1693, avg=609.14, stdev=521.75 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 309], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 393], 60.00th=[ 676], | 70.00th=[ 676], 80.00th=[ 735], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 1560, max= 2048, per=37.29%, avg=1899.20, stdev=199.35, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=3.54%, ctx=119, 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=3638KiB/s (3726kB/s), 369KiB/s-2017KiB/s (377kB/s-2065kB/s), io=20.0MiB (20.0MB), run=3554-5629msec WRITE: bw=5094KiB/s (5216kB/s), 1273KiB/s-1843KiB/s (1304kB/s-1887kB/s), io=28.0MiB (29.4MB), run=3554-5629msec 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=145343: Fri Aug 14 18:55:47 2026 read: IOPS=1, BW=5107KiB/s (5230kB/s)(12.0MiB/2406msec) clat (msec): min=579, max=903, avg=731.14, stdev=163.43 lat (msec): min=579, max=903, avg=731.14, stdev=163.43 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7953, max= 8143, per=100.00%, avg=8048.00, stdev=134.35, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=5.90%, 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=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=145344: Fri Aug 14 18:55:47 2026 read: IOPS=0, BW=3012KiB/s (3084kB/s)(4096KiB/1360msec) clat (nsec): min=230642k, max=230642k, avg=230642165.00, stdev= 0.00 lat (nsec): min=230645k, max=230645k, avg=230644696.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 230], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 230], 95.00th=[ 230], | 99.00th=[ 230], 99.50th=[ 230], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 5527, max= 5527, per=81.17%, avg=5527.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=6024KiB/s (6168kB/s)(8192KiB/1360msec); 0 zone resets clat (msec): min=524, max=542, avg=533.69, stdev=13.01 lat (msec): min=525, max=543, avg=534.29, stdev=13.09 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 527], 50.00th=[ 527], 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= 8143, max= 8143, per=77.96%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=66.67% cpu : usr=0.00%, sys=12.14%, ctx=56, 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=145345: Fri Aug 14 18:55:47 2026 write: IOPS=0, BW=3917KiB/s (4011kB/s)(12.0MiB/3137msec); 0 zone resets clat (msec): min=341, max=1720, avg=999.66, stdev=691.86 lat (msec): min=341, max=1721, avg=1000.12, stdev=692.07 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7922, max= 8159, per=76.98%, avg=8040.50, stdev=167.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.77%, ctx=57, 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=145346: Fri Aug 14 18:55:47 2026 write: IOPS=1, BW=5063KiB/s (5185kB/s)(12.0MiB/2427msec); 0 zone resets clat (msec): min=280, max=1724, avg=771.21, stdev=825.55 lat (msec): min=281, max=1724, avg=771.75, stdev=825.23 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7249, max= 8175, per=73.83%, avg=7712.00, stdev=654.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.69%, 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=6810KiB/s (6973kB/s), 3012KiB/s-5107KiB/s (3084kB/s-5230kB/s), io=16.0MiB (16.8MB), run=1360-2406msec WRITE: bw=10.2MiB/s (10.7MB/s), 3917KiB/s-6024KiB/s (4011kB/s-6168kB/s), io=32.0MiB (33.6MB), run=1360-3137msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145347: Fri Aug 14 18:55:47 2026 read: IOPS=1, BW=5354KiB/s (5483kB/s)(12.0MiB/2295msec) clat (msec): min=582, max=873, avg=691.15, stdev=158.90 lat (msec): min=582, max=873, avg=691.15, stdev=158.90 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 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= 8110, max= 8175, per=100.00%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=19.70%, ctx=547, 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=145348: Fri Aug 14 18:55:47 2026 read: IOPS=0, BW=1602KiB/s (1640kB/s)(4096KiB/2557msec) clat (nsec): min=664512k, max=664512k, avg=664512184.00, stdev= 0.00 lat (nsec): min=664514k, max=664514k, avg=664514142.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7816, max= 7816, per=100.00%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3204KiB/s (3281kB/s)(8192KiB/2557msec); 0 zone resets clat (msec): min=782, max=884, avg=833.31, stdev=72.16 lat (msec): min=782, max=884, avg=833.63, stdev=72.11 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 885], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 8015, max= 8015, per=78.45%, avg=8015.00, 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=6.03%, ctx=242, 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=145349: Fri Aug 14 18:55:47 2026 write: IOPS=0, BW=3832KiB/s (3924kB/s)(12.0MiB/3207msec); 0 zone resets clat (msec): min=138, max=2654, avg=1044.96, stdev=1397.28 lat (msec): min=138, max=2654, avg=1045.27, stdev=1397.24 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 2668], 80.00th=[ 2668], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.90%, ctx=64, 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=145350: Fri Aug 14 18:55:47 2026 write: IOPS=0, BW=4045KiB/s (4142kB/s)(12.0MiB/3038msec); 0 zone resets clat (msec): min=725, max=1064, avg=912.76, stdev=171.97 lat (msec): min=726, max=1064, avg=913.49, stdev=172.04 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8126, max= 8159, per=79.70%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.54%, ctx=119, 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=6408KiB/s (6561kB/s), 1602KiB/s-5354KiB/s (1640kB/s-5483kB/s), io=16.0MiB (16.8MB), run=2295-2557msec WRITE: bw=9.98MiB/s (10.5MB/s), 3204KiB/s-4045KiB/s (3281kB/s-4142kB/s), io=32.0MiB (33.6MB), run=2557-3207msec