== sanity test 398b: DIO and buffer IO race ============== 16:23:41 (1787603021) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.82946 s, 10.4 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=144810: Mon Aug 24 16:25:54 2026 read: IOPS=13, BW=52.4KiB/s (53.6kB/s)(5992KiB/114412msec) clat (usec): min=23, max=237093, avg=36861.39, stdev=28216.26 lat (usec): min=23, max=237095, avg=36864.06, stdev=28214.82 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 70], 20.00th=[ 16188], | 30.00th=[ 20841], 40.00th=[ 25822], 50.00th=[ 31327], 60.00th=[ 37487], | 70.00th=[ 44827], 80.00th=[ 55837], 90.00th=[ 76022], 95.00th=[ 89654], | 99.00th=[122160], 99.50th=[139461], 99.90th=[198181], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 7, max= 119, per=25.52%, avg=52.06, stdev=22.24, samples=224 iops : min= 1, max= 29, avg=12.39, stdev= 5.59, samples=224 write: IOPS=13, BW=55.0KiB/s (56.3kB/s)(6296KiB/114412msec); 0 zone resets clat (usec): min=723, max=688797, avg=37334.87, stdev=41442.26 lat (usec): min=724, max=688798, avg=37336.88, stdev=41442.48 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1139], 10.00th=[ 1336], 20.00th=[ 3032], | 30.00th=[ 7373], 40.00th=[ 17171], 50.00th=[ 27395], 60.00th=[ 38011], | 70.00th=[ 50070], 80.00th=[ 64750], 90.00th=[ 86508], 95.00th=[106431], | 99.00th=[173016], 99.50th=[196084], 99.90th=[396362], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 7, max= 133, per=25.58%, avg=54.49, stdev=21.60, samples=225 iops : min= 1, max= 33, avg=13.01, stdev= 5.45, samples=225 lat (usec) : 50=1.27%, 100=4.23%, 250=0.52%, 750=0.07%, 1000=0.33% lat (msec) : 2=7.03%, 4=4.56%, 10=5.83%, 20=11.43%, 50=36.82% lat (msec) : 100=23.21%, 250=4.65%, 500=0.03%, 750=0.03% cpu : usr=0.07%, sys=5.20%, ctx=6270, 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=144811: Mon Aug 24 16:25:54 2026 read: IOPS=12, BW=50.8KiB/s (52.1kB/s)(5940KiB/116831msec) clat (usec): min=24, max=253717, avg=37920.00, stdev=28931.03 lat (usec): min=24, max=253717, avg=37924.05, stdev=28929.95 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 56], 10.00th=[ 71], 20.00th=[ 16581], | 30.00th=[ 22414], 40.00th=[ 26608], 50.00th=[ 32900], 60.00th=[ 38536], | 70.00th=[ 47973], 80.00th=[ 57410], 90.00th=[ 73925], 95.00th=[ 90702], | 99.00th=[130548], 99.50th=[149947], 99.90th=[206570], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 7, max= 110, per=24.81%, avg=50.62, stdev=21.27, samples=229 iops : min= 1, max= 27, avg=12.03, stdev= 5.36, samples=229 write: IOPS=13, BW=54.3KiB/s (55.6kB/s)(6348KiB/116831msec); 0 zone resets clat (usec): min=684, max=712643, avg=37891.75, stdev=43288.90 lat (usec): min=685, max=712645, avg=37893.65, stdev=43289.27 clat percentiles (usec): | 1.00th=[ 971], 5.00th=[ 1106], 10.00th=[ 1221], 20.00th=[ 2966], | 30.00th=[ 6783], 40.00th=[ 17695], 50.00th=[ 27395], 60.00th=[ 36963], | 70.00th=[ 48497], 80.00th=[ 64750], 90.00th=[ 90702], 95.00th=[114820], | 99.00th=[168821], 99.50th=[189793], 99.90th=[375391], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 127, per=25.19%, avg=53.67, stdev=22.55, samples=230 iops : min= 1, max= 31, avg=12.80, stdev= 5.67, samples=230 lat (usec) : 50=1.07%, 100=4.36%, 250=0.33%, 500=0.07%, 750=0.20% lat (usec) : 1000=0.59% lat (msec) : 2=7.55%, 4=4.17%, 10=6.02%, 20=9.86%, 50=37.43% lat (msec) : 100=22.95%, 250=5.27%, 500=0.10%, 750=0.03% cpu : usr=0.07%, sys=5.19%, ctx=6249, 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=144812: Mon Aug 24 16:25:54 2026 read: IOPS=12, BW=51.6KiB/s (52.9kB/s)(6028KiB/116784msec) clat (usec): min=20, max=710917, avg=36956.38, stdev=35051.61 lat (usec): min=20, max=710918, avg=36959.07, stdev=35052.03 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 72], 20.00th=[ 15795], | 30.00th=[ 20579], 40.00th=[ 25297], 50.00th=[ 30802], 60.00th=[ 36963], | 70.00th=[ 44303], 80.00th=[ 54264], 90.00th=[ 71828], 95.00th=[ 89654], | 99.00th=[139461], 99.50th=[183501], 99.90th=[350225], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 111, per=25.07%, avg=51.15, stdev=22.31, samples=230 iops : min= 1, max= 27, avg=12.16, stdev= 5.63, samples=230 write: IOPS=13, BW=53.6KiB/s (54.9kB/s)(6260KiB/116784msec); 0 zone resets clat (usec): min=657, max=270299, avg=38772.62, stdev=39951.00 lat (usec): min=657, max=270302, avg=38775.30, stdev=39950.87 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 1123], 10.00th=[ 1270], 20.00th=[ 3425], | 30.00th=[ 7046], 40.00th=[ 18482], 50.00th=[ 28443], 60.00th=[ 39584], | 70.00th=[ 52167], 80.00th=[ 67634], 90.00th=[ 90702], 95.00th=[117965], | 99.00th=[170918], 99.50th=[200279], 99.90th=[233833], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 118, per=25.03%, avg=53.32, stdev=21.88, samples=229 iops : min= 1, max= 29, avg=12.71, stdev= 5.47, samples=229 lat (usec) : 50=1.04%, 100=4.46%, 250=0.29%, 500=0.20%, 750=0.13% lat (usec) : 1000=0.78% lat (msec) : 2=7.00%, 4=3.87%, 10=6.38%, 20=11.17%, 50=36.98% lat (msec) : 100=21.94%, 250=5.63%, 500=0.10%, 750=0.03% cpu : usr=0.06%, sys=5.06%, ctx=6251, 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=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=144813: Mon Aug 24 16:25:54 2026 read: IOPS=12, BW=51.5KiB/s (52.7kB/s)(6052KiB/117601msec) clat (usec): min=32, max=363451, avg=36520.31, stdev=29654.45 lat (usec): min=32, max=363452, avg=36522.05, stdev=29654.42 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 55], 10.00th=[ 73], 20.00th=[ 14877], | 30.00th=[ 20317], 40.00th=[ 24773], 50.00th=[ 30802], 60.00th=[ 37487], | 70.00th=[ 46400], 80.00th=[ 57410], 90.00th=[ 72877], 95.00th=[ 87557], | 99.00th=[130548], 99.50th=[154141], 99.90th=[246416], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 7, max= 152, per=25.32%, avg=51.65, stdev=23.86, samples=229 iops : min= 1, max= 38, avg=12.28, stdev= 5.99, samples=229 write: IOPS=13, BW=53.0KiB/s (54.3kB/s)(6236KiB/117601msec); 0 zone resets clat (usec): min=770, max=709621, avg=39725.97, stdev=45715.82 lat (usec): min=771, max=709641, avg=39731.95, stdev=45717.23 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1123], 10.00th=[ 1237], 20.00th=[ 2868], | 30.00th=[ 6456], 40.00th=[ 16581], 50.00th=[ 29492], 60.00th=[ 39584], | 70.00th=[ 53216], 80.00th=[ 67634], 90.00th=[ 92799], 95.00th=[114820], | 99.00th=[187696], 99.50th=[235930], 99.90th=[467665], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 118, per=24.66%, avg=52.53, stdev=21.81, samples=232 iops : min= 1, max= 29, avg=12.50, stdev= 5.48, samples=232 lat (usec) : 50=1.24%, 100=4.52%, 250=0.33%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.55% lat (msec) : 2=7.98%, 4=3.58%, 10=6.25%, 20=11.56%, 50=34.60% lat (msec) : 100=23.70%, 250=5.34%, 500=0.20%, 750=0.03% cpu : usr=0.08%, sys=4.99%, ctx=6240, 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=204KiB/s (209kB/s), 50.8KiB/s-52.4KiB/s (52.1kB/s-53.6kB/s), io=23.4MiB (24.6MB), run=114412-117601msec WRITE: bw=214KiB/s (219kB/s), 53.0KiB/s-55.0KiB/s (54.3kB/s-56.3kB/s), io=24.6MiB (25.7MB), run=114412-117601msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144815: Mon Aug 24 16:27:50 2026 read: IOPS=6, BW=25.7KiB/s (26.3kB/s)(5992KiB/232928msec) clat (msec): min=4, max=822, avg=30.70, stdev=37.83 lat (msec): min=4, max=822, avg=30.70, stdev=37.83 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 30], 80.00th=[ 41], 90.00th=[ 69], 95.00th=[ 95], | 99.00th=[ 171], 99.50th=[ 199], 99.90th=[ 430], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 96, per=27.70%, avg=28.25, stdev=19.58, samples=412 iops : min= 1, max= 24, avg= 6.46, stdev= 4.94, samples=412 write: IOPS=6, BW=27.0KiB/s (27.7kB/s)(6296KiB/232928msec); 0 zone resets clat (msec): min=31, max=463, avg=118.69, stdev=61.18 lat (msec): min=31, max=463, avg=118.69, stdev=61.18 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 50], 10.00th=[ 58], 20.00th=[ 69], | 30.00th=[ 81], 40.00th=[ 90], 50.00th=[ 104], 60.00th=[ 118], | 70.00th=[ 138], 80.00th=[ 165], 90.00th=[ 203], 95.00th=[ 236], | 99.00th=[ 330], 99.50th=[ 384], 99.90th=[ 439], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 7, max= 72, per=24.80%, avg=26.54, stdev=13.22, samples=459 iops : min= 1, max= 18, avg= 6.02, stdev= 3.38, samples=459 lat (msec) : 10=6.87%, 20=19.17%, 50=17.81%, 100=27.47%, 250=26.89% lat (msec) : 500=1.76%, 1000=0.03% cpu : usr=0.04%, sys=1.14%, ctx=5060, 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=144816: Mon Aug 24 16:27:50 2026 read: IOPS=6, BW=25.4KiB/s (26.0kB/s)(5940KiB/233618msec) clat (msec): min=3, max=730, avg=30.31, stdev=35.72 lat (msec): min=3, max=730, avg=30.31, stdev=35.72 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 41], 90.00th=[ 69], 95.00th=[ 96], | 99.00th=[ 153], 99.50th=[ 180], 99.90th=[ 284], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 112, per=27.66%, avg=28.21, stdev=19.39, samples=408 iops : min= 1, max= 28, avg= 6.45, stdev= 4.89, samples=408 write: IOPS=6, BW=27.2KiB/s (27.8kB/s)(6348KiB/233618msec); 0 zone resets clat (msec): min=27, max=499, avg=118.76, stdev=62.01 lat (msec): min=27, max=499, avg=118.76, stdev=62.01 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 50], 10.00th=[ 57], 20.00th=[ 70], | 30.00th=[ 80], 40.00th=[ 90], 50.00th=[ 103], 60.00th=[ 118], | 70.00th=[ 136], 80.00th=[ 165], 90.00th=[ 201], 95.00th=[ 241], | 99.00th=[ 326], 99.50th=[ 351], 99.90th=[ 477], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 7, max= 79, per=24.96%, avg=26.71, stdev=13.31, samples=459 iops : min= 1, max= 19, avg= 6.07, stdev= 3.40, samples=459 lat (msec) : 4=0.03%, 10=7.49%, 20=18.55%, 50=17.48%, 100=27.90% lat (msec) : 250=26.37%, 500=2.15%, 750=0.03% cpu : usr=0.03%, sys=1.06%, ctx=4856, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144817: Mon Aug 24 16:27:50 2026 read: IOPS=6, BW=25.9KiB/s (26.6kB/s)(6028KiB/232486msec) clat (msec): min=4, max=258, avg=31.69, stdev=32.65 lat (msec): min=4, max=258, avg=31.69, stdev=32.65 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 32], 80.00th=[ 46], 90.00th=[ 75], 95.00th=[ 99], | 99.00th=[ 155], 99.50th=[ 211], 99.90th=[ 257], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 7, max= 103, per=26.99%, avg=27.53, stdev=18.99, samples=424 iops : min= 1, max= 25, avg= 6.27, stdev= 4.79, samples=424 write: IOPS=6, BW=26.9KiB/s (27.6kB/s)(6260KiB/232486msec); 0 zone resets clat (msec): min=31, max=864, avg=117.97, stdev=63.84 lat (msec): min=31, max=864, avg=117.97, stdev=63.84 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 51], 10.00th=[ 57], 20.00th=[ 70], | 30.00th=[ 80], 40.00th=[ 90], 50.00th=[ 103], 60.00th=[ 115], | 70.00th=[ 136], 80.00th=[ 159], 90.00th=[ 199], 95.00th=[ 239], | 99.00th=[ 326], 99.50th=[ 363], 99.90th=[ 518], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 72, per=25.02%, avg=26.77, stdev=13.23, samples=452 iops : min= 1, max= 18, avg= 6.08, stdev= 3.40, samples=452 lat (msec) : 10=7.32%, 20=18.59%, 50=16.57%, 100=29.04%, 250=26.33% lat (msec) : 500=2.08%, 750=0.03%, 1000=0.03% cpu : usr=0.03%, sys=1.08%, ctx=4875, 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=144818: Mon Aug 24 16:27:50 2026 read: IOPS=6, BW=26.1KiB/s (26.7kB/s)(6052KiB/232234msec) clat (msec): min=4, max=440, avg=31.64, stdev=36.00 lat (msec): min=4, max=440, avg=31.64, stdev=36.00 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 44], 90.00th=[ 77], 95.00th=[ 94], | 99.00th=[ 180], 99.50th=[ 249], 99.90th=[ 334], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7, max= 118, per=28.09%, avg=28.65, stdev=19.61, samples=410 iops : min= 1, max= 29, avg= 6.55, stdev= 4.96, samples=410 write: IOPS=6, BW=26.9KiB/s (27.5kB/s)(6236KiB/232234msec); 0 zone resets clat (msec): min=29, max=870, avg=118.19, stdev=64.26 lat (msec): min=29, max=870, avg=118.19, stdev=64.26 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 71], | 30.00th=[ 80], 40.00th=[ 88], 50.00th=[ 100], 60.00th=[ 113], | 70.00th=[ 132], 80.00th=[ 159], 90.00th=[ 201], 95.00th=[ 247], | 99.00th=[ 330], 99.50th=[ 376], 99.90th=[ 435], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 63, per=24.81%, avg=26.55, stdev=12.95, samples=455 iops : min= 1, max= 15, avg= 6.03, stdev= 3.32, samples=455 lat (msec) : 10=7.06%, 20=18.65%, 50=17.02%, 100=30.18%, 250=24.45% lat (msec) : 500=2.60%, 1000=0.03% cpu : usr=0.04%, sys=1.09%, ctx=5014, 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=103KiB/s (105kB/s), 25.4KiB/s-26.1KiB/s (26.0kB/s-26.7kB/s), io=23.4MiB (24.6MB), run=232234-233618msec WRITE: bw=108KiB/s (110kB/s), 26.9KiB/s-27.2KiB/s (27.5kB/s-27.8kB/s), io=24.6MiB (25.7MB), run=232234-233618msec 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=144872: Mon Aug 24 16:28:27 2026 read: IOPS=15, BW=243KiB/s (249kB/s)(5920KiB/24315msec) clat (usec): min=35, max=209068, avg=32845.14, stdev=30031.69 lat (usec): min=36, max=209070, avg=32846.33, stdev=30031.72 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 51], 10.00th=[ 58], 20.00th=[ 71], | 30.00th=[ 16450], 40.00th=[ 23462], 50.00th=[ 29754], 60.00th=[ 36439], | 70.00th=[ 44303], 80.00th=[ 53740], 90.00th=[ 72877], 95.00th=[ 90702], | 99.00th=[120062], 99.50th=[156238], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 606, per=25.85%, avg=243.50, stdev=103.71, samples=48 iops : min= 1, max= 37, avg=14.48, stdev= 6.49, samples=48 write: IOPS=16, BW=262KiB/s (268kB/s)(6368KiB/24315msec); 0 zone resets clat (usec): min=1222, max=285181, avg=29601.07, stdev=33605.90 lat (usec): min=1225, max=285184, avg=29608.75, stdev=33605.32 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1745], 10.00th=[ 2737], 20.00th=[ 4621], | 30.00th=[ 6980], 40.00th=[ 11076], 50.00th=[ 19792], 60.00th=[ 25297], | 70.00th=[ 36439], 80.00th=[ 51119], 90.00th=[ 67634], 95.00th=[ 90702], | 99.00th=[173016], 99.50th=[187696], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 30, max= 636, per=26.35%, avg=261.17, stdev=118.92, samples=48 iops : min= 1, max= 39, avg=15.58, stdev= 7.45, samples=48 lat (usec) : 50=2.08%, 100=10.03%, 250=0.78%, 500=0.13%, 1000=0.26% lat (msec) : 2=3.52%, 4=5.21%, 10=11.33%, 20=8.98%, 50=35.42% lat (msec) : 100=19.14%, 250=2.99%, 500=0.13% cpu : usr=0.08%, sys=6.09%, ctx=1388, 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=144873: Mon Aug 24 16:28:27 2026 read: IOPS=14, BW=226KiB/s (231kB/s)(5744KiB/25408msec) clat (usec): min=34, max=161599, avg=31790.12, stdev=26833.28 lat (usec): min=34, max=161599, avg=31792.72, stdev=26832.76 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 59], 20.00th=[ 78], | 30.00th=[ 16581], 40.00th=[ 22938], 50.00th=[ 29492], 60.00th=[ 35914], | 70.00th=[ 43779], 80.00th=[ 53216], 90.00th=[ 66847], 95.00th=[ 78119], | 99.00th=[111674], 99.50th=[119014], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 31, max= 477, per=24.86%, avg=234.17, stdev=106.03, samples=48 iops : min= 1, max= 29, avg=13.90, stdev= 6.71, samples=48 write: IOPS=16, BW=258KiB/s (264kB/s)(6544KiB/25408msec); 0 zone resets clat (usec): min=1043, max=327770, avg=33516.92, stdev=41499.54 lat (usec): min=1046, max=327773, avg=33523.06, stdev=41498.25 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1614], 10.00th=[ 2147], 20.00th=[ 3916], | 30.00th=[ 6128], 40.00th=[ 11338], 50.00th=[ 19268], 60.00th=[ 28443], | 70.00th=[ 39060], 80.00th=[ 54789], 90.00th=[ 81265], 95.00th=[109577], | 99.00th=[208667], 99.50th=[219153], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 62, max= 702, per=26.49%, avg=262.55, stdev=119.95, samples=49 iops : min= 3, max= 43, avg=15.67, stdev= 7.53, samples=49 lat (usec) : 50=1.43%, 100=8.98%, 250=1.30%, 500=0.26%, 750=0.26% lat (msec) : 2=4.56%, 4=6.51%, 10=9.11%, 20=10.55%, 50=34.24% lat (msec) : 100=18.36%, 250=4.30%, 500=0.13% cpu : usr=0.07%, sys=5.58%, ctx=1344, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144874: Mon Aug 24 16:28:27 2026 read: IOPS=15, BW=253KiB/s (259kB/s)(6256KiB/24710msec) clat (usec): min=26, max=130532, avg=33077.40, stdev=27003.05 lat (usec): min=26, max=130533, avg=33078.66, stdev=27003.03 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 111], | 30.00th=[ 18744], 40.00th=[ 24249], 50.00th=[ 29754], 60.00th=[ 36963], | 70.00th=[ 45876], 80.00th=[ 53740], 90.00th=[ 67634], 95.00th=[ 84411], | 99.00th=[115868], 99.50th=[128451], 99.90th=[130548], 99.95th=[130548], | 99.99th=[130548] bw ( KiB/s): min= 93, max= 473, per=27.03%, avg=254.67, stdev=93.72, samples=48 iops : min= 5, max= 29, avg=15.19, stdev= 5.87, samples=48 write: IOPS=15, BW=244KiB/s (250kB/s)(6032KiB/24710msec); 0 zone resets clat (usec): min=1247, max=276615, avg=30574.65, stdev=34399.54 lat (usec): min=1249, max=276617, avg=30576.96, stdev=34399.36 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1647], 10.00th=[ 1975], 20.00th=[ 3949], | 30.00th=[ 6063], 40.00th=[ 9503], 50.00th=[ 16450], 60.00th=[ 27132], | 70.00th=[ 41681], 80.00th=[ 54789], 90.00th=[ 73925], 95.00th=[ 96994], | 99.00th=[128451], 99.50th=[181404], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 94, max= 445, per=24.34%, avg=241.17, stdev=85.81, samples=48 iops : min= 5, max= 27, avg=14.35, stdev= 5.43, samples=48 lat (usec) : 50=1.82%, 100=7.94%, 250=1.17%, 500=0.26%, 750=0.13% lat (msec) : 2=5.21%, 4=5.47%, 10=10.29%, 20=9.64%, 50=34.11% lat (msec) : 100=20.70%, 250=3.12%, 500=0.13% cpu : usr=0.07%, sys=5.88%, ctx=1447, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144875: Mon Aug 24 16:28:27 2026 read: IOPS=15, BW=243KiB/s (248kB/s)(6032KiB/24867msec) clat (usec): min=35, max=210874, avg=35583.38, stdev=31570.35 lat (usec): min=35, max=210875, avg=35586.56, stdev=31572.10 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 48], 10.00th=[ 60], 20.00th=[ 75], | 30.00th=[ 19006], 40.00th=[ 27657], 50.00th=[ 32113], 60.00th=[ 38536], | 70.00th=[ 48497], 80.00th=[ 57934], 90.00th=[ 73925], 95.00th=[ 89654], | 99.00th=[137364], 99.50th=[198181], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 126, max= 414, per=25.50%, avg=240.24, stdev=80.00, samples=49 iops : min= 7, max= 25, avg=14.29, stdev= 5.04, samples=49 write: IOPS=15, BW=252KiB/s (258kB/s)(6256KiB/24867msec); 0 zone resets clat (usec): min=1196, max=235516, avg=29037.31, stdev=30040.90 lat (usec): min=1197, max=235517, avg=29039.36, stdev=30040.93 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1713], 10.00th=[ 2376], 20.00th=[ 5080], | 30.00th=[ 8225], 40.00th=[ 12256], 50.00th=[ 17695], 60.00th=[ 26346], | 70.00th=[ 36963], 80.00th=[ 50594], 90.00th=[ 72877], 95.00th=[ 84411], | 99.00th=[124257], 99.50th=[135267], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 63, max= 510, per=25.44%, avg=252.10, stdev=90.64, samples=49 iops : min= 3, max= 31, avg=15.02, stdev= 5.71, samples=49 lat (usec) : 50=2.47%, 100=8.98%, 250=0.65% lat (msec) : 2=4.30%, 4=4.30%, 10=9.90%, 20=11.46%, 50=34.51% lat (msec) : 100=20.57%, 250=2.86% cpu : usr=0.07%, sys=6.12%, ctx=1435, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=943KiB/s (965kB/s), 226KiB/s-253KiB/s (231kB/s-259kB/s), io=23.4MiB (24.5MB), run=24315-25408msec WRITE: bw=992KiB/s (1016kB/s), 244KiB/s-262KiB/s (250kB/s-268kB/s), io=24.6MiB (25.8MB), run=24315-25408msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144876: Mon Aug 24 16:29:07 2026 read: IOPS=5, BW=89.9KiB/s (92.0kB/s)(5920KiB/65861msec) clat (msec): min=5, max=241, avg=36.55, stdev=35.98 lat (msec): min=5, max=241, avg=36.55, stdev=35.98 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 75], 95.00th=[ 116], | 99.00th=[ 186], 99.50th=[ 241], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 31, max= 445, per=26.81%, avg=97.30, stdev=67.43, samples=119 iops : min= 1, max= 27, avg= 5.34, stdev= 4.23, samples=119 write: IOPS=6, BW=96.7KiB/s (99.0kB/s)(6368KiB/65861msec); 0 zone resets clat (msec): min=37, max=326, avg=130.55, stdev=58.53 lat (msec): min=37, max=326, avg=130.56, stdev=58.53 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 59], 10.00th=[ 65], 20.00th=[ 79], | 30.00th=[ 94], 40.00th=[ 106], 50.00th=[ 120], 60.00th=[ 136], | 70.00th=[ 148], 80.00th=[ 176], 90.00th=[ 215], 95.00th=[ 249], | 99.00th=[ 300], 99.50th=[ 317], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 21, max= 223, per=25.20%, avg=96.26, stdev=42.31, samples=130 iops : min= 1, max= 13, avg= 5.27, stdev= 2.71, samples=130 lat (msec) : 10=3.39%, 20=13.93%, 50=23.31%, 100=22.79%, 250=34.11% lat (msec) : 500=2.47% cpu : usr=0.04%, sys=1.20%, ctx=1286, 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=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=144877: Mon Aug 24 16:29:07 2026 read: IOPS=5, BW=87.3KiB/s (89.3kB/s)(5744KiB/65832msec) clat (msec): min=5, max=241, avg=34.11, stdev=30.80 lat (msec): min=5, max=241, avg=34.11, stdev=30.80 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 44], 90.00th=[ 69], 95.00th=[ 94], | 99.00th=[ 163], 99.50th=[ 186], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 21, max= 318, per=27.67%, avg=100.43, stdev=62.64, samples=113 iops : min= 1, max= 19, avg= 5.54, stdev= 3.98, samples=113 write: IOPS=6, BW=99.4KiB/s (102kB/s)(6544KiB/65832msec); 0 zone resets clat (msec): min=38, max=408, avg=130.48, stdev=58.75 lat (msec): min=38, max=408, avg=130.49, stdev=58.75 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 59], 10.00th=[ 69], 20.00th=[ 85], | 30.00th=[ 97], 40.00th=[ 108], 50.00th=[ 120], 60.00th=[ 134], | 70.00th=[ 146], 80.00th=[ 167], 90.00th=[ 201], 95.00th=[ 243], | 99.00th=[ 326], 99.50th=[ 372], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 31, max= 222, per=25.88%, avg=98.87, stdev=41.89, samples=130 iops : min= 1, max= 13, avg= 5.43, stdev= 2.70, samples=130 lat (msec) : 10=2.34%, 20=14.84%, 50=22.40%, 100=22.92%, 250=35.03% lat (msec) : 500=2.47% cpu : usr=0.03%, sys=1.22%, ctx=1229, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144878: Mon Aug 24 16:29:07 2026 read: IOPS=6, BW=98.1KiB/s (100kB/s)(6256KiB/63755msec) clat (msec): min=6, max=268, avg=33.28, stdev=33.00 lat (msec): min=6, max=268, avg=33.29, stdev=33.00 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 45], 90.00th=[ 66], 95.00th=[ 93], | 99.00th=[ 182], 99.50th=[ 243], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 383, per=29.90%, avg=108.54, stdev=76.60, samples=114 iops : min= 1, max= 23, avg= 6.04, stdev= 4.81, samples=114 write: IOPS=5, BW=94.6KiB/s (96.9kB/s)(6032KiB/63755msec); 0 zone resets clat (msec): min=35, max=465, avg=133.85, stdev=56.52 lat (msec): min=35, max=465, avg=133.85, stdev=56.52 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 66], 10.00th=[ 78], 20.00th=[ 89], | 30.00th=[ 101], 40.00th=[ 110], 50.00th=[ 125], 60.00th=[ 136], | 70.00th=[ 155], 80.00th=[ 169], 90.00th=[ 203], 95.00th=[ 232], | 99.00th=[ 355], 99.50th=[ 359], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 31, max= 192, per=24.67%, avg=94.23, stdev=37.17, samples=126 iops : min= 1, max= 12, avg= 5.14, stdev= 2.42, samples=126 lat (msec) : 10=2.86%, 20=17.97%, 50=22.27%, 100=20.18%, 250=34.64% lat (msec) : 500=2.08% cpu : usr=0.04%, sys=1.31%, ctx=1330, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144879: Mon Aug 24 16:29:07 2026 read: IOPS=5, BW=92.7KiB/s (94.9kB/s)(6032KiB/65057msec) clat (msec): min=5, max=237, avg=34.41, stdev=34.31 lat (msec): min=5, max=237, avg=34.41, stdev=34.31 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 44], 90.00th=[ 71], 95.00th=[ 105], | 99.00th=[ 218], 99.50th=[ 236], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 30, max= 383, per=28.75%, avg=104.36, stdev=70.08, samples=113 iops : min= 1, max= 23, avg= 5.78, stdev= 4.46, samples=113 write: IOPS=6, BW=96.2KiB/s (98.5kB/s)(6256KiB/65057msec); 0 zone resets clat (msec): min=40, max=386, avg=132.99, stdev=58.51 lat (msec): min=40, max=386, avg=132.99, stdev=58.51 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 67], 20.00th=[ 85], | 30.00th=[ 95], 40.00th=[ 111], 50.00th=[ 123], 60.00th=[ 136], | 70.00th=[ 153], 80.00th=[ 178], 90.00th=[ 211], 95.00th=[ 241], | 99.00th=[ 326], 99.50th=[ 347], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 31, max= 192, per=25.09%, avg=95.84, stdev=41.07, samples=128 iops : min= 1, max= 12, avg= 5.24, stdev= 2.64, samples=128 lat (msec) : 10=3.39%, 20=16.80%, 50=22.53%, 100=21.09%, 250=34.11% lat (msec) : 500=2.08% cpu : usr=0.05%, sys=1.22%, ctx=1269, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=364KiB/s (372kB/s), 87.3KiB/s-98.1KiB/s (89.3kB/s-100kB/s), io=23.4MiB (24.5MB), run=63755-65861msec WRITE: bw=383KiB/s (392kB/s), 94.6KiB/s-99.4KiB/s (96.9kB/s-102kB/s), io=24.6MiB (25.8MB), run=63755-65861msec 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=144895: Mon Aug 24 16:29:22 2026 read: IOPS=2, BW=2090KiB/s (2140kB/s)(7168KiB/3430msec) clat (msec): min=104, max=407, avg=220.23, stdev=116.45 lat (msec): min=104, max=407, avg=220.23, stdev=116.45 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 142], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 163], 60.00th=[ 211], | 70.00th=[ 211], 80.00th=[ 359], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 1530, max= 5976, per=67.70%, avg=2890.00, stdev=2070.63, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 write: IOPS=1, BW=1493KiB/s (1529kB/s)(5120KiB/3430msec); 0 zone resets clat (msec): min=247, max=528, avg=371.32, stdev=117.26 lat (msec): min=247, max=532, avg=372.24, stdev=118.57 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 2027, max= 4591, per=48.26%, avg=2884.33, stdev=1478.02, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 250=50.00%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=3.41%, ctx=78, 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=144896: Mon Aug 24 16:29:22 2026 read: IOPS=0, BW=427KiB/s (437kB/s)(2048KiB/4797msec) clat (msec): min=72, max=142, avg=107.59, stdev=49.07 lat (msec): min=72, max=142, avg=107.60, stdev=49.07 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 73], | 30.00th=[ 73], 40.00th=[ 73], 50.00th=[ 73], 60.00th=[ 142], | 70.00th=[ 142], 80.00th=[ 142], 90.00th=[ 142], 95.00th=[ 142], | 99.00th=[ 142], 99.50th=[ 142], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 1530, max= 1910, per=40.29%, avg=1720.00, stdev=268.70, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2135KiB/s (2186kB/s)(10.0MiB/4797msec); 0 zone resets clat (msec): min=160, max=1190, avg=454.94, stdev=292.19 lat (msec): min=160, max=1190, avg=455.15, stdev=292.21 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 268], | 30.00th=[ 296], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 388], | 70.00th=[ 460], 80.00th=[ 584], 90.00th=[ 592], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 1530, max= 4055, per=36.90%, avg=2205.75, stdev=767.00, samples=8 iops : min= 1, max= 3, avg= 1.25, stdev= 0.71, samples=8 lat (msec) : 100=8.33%, 250=16.67%, 500=50.00%, 750=16.67%, 2000=8.33% cpu : usr=0.06%, sys=4.67%, ctx=77, 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=144897: Mon Aug 24 16:29:22 2026 read: IOPS=1, BW=1388KiB/s (1422kB/s)(6144KiB/4425msec) clat (msec): min=84, max=577, avg=266.53, stdev=213.13 lat (msec): min=84, max=577, avg=266.53, stdev=213.12 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 90], | 30.00th=[ 90], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 222], | 70.00th=[ 485], 80.00th=[ 485], 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= 2027, max= 4063, per=59.48%, avg=2539.00, stdev=1016.01, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1388KiB/s (1422kB/s)(6144KiB/4425msec); 0 zone resets clat (msec): min=169, max=776, avg=464.92, stdev=216.72 lat (msec): min=170, max=776, avg=465.26, stdev=216.47 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 550], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1530, max= 3923, per=39.80%, avg=2378.75, stdev=1056.24, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.05%, sys=3.14%, ctx=80, 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=144898: Mon Aug 24 16:29:22 2026 read: IOPS=1, BW=1192KiB/s (1221kB/s)(5120KiB/4295msec) clat (msec): min=120, max=1062, avg=345.66, stdev=402.68 lat (msec): min=120, max=1062, avg=345.66, stdev=402.68 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 122], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 174], 60.00th=[ 174], | 70.00th=[ 222], 80.00th=[ 222], 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= 4047, max= 4071, per=95.08%, avg=4059.00, stdev=16.97, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1669KiB/s (1709kB/s)(7168KiB/4295msec); 0 zone resets clat (msec): min=198, max=635, avg=361.44, stdev=160.00 lat (msec): min=199, max=635, avg=361.58, stdev=160.06 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 207], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 326], 60.00th=[ 384], | 70.00th=[ 384], 80.00th=[ 502], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1969, max= 4063, per=47.33%, avg=2829.00, stdev=1123.10, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 250=50.00%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.02%, sys=2.89%, 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=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=4269KiB/s (4372kB/s), 427KiB/s-2090KiB/s (437kB/s-2140kB/s), io=20.0MiB (20.0MB), run=3430-4797msec WRITE: bw=5977KiB/s (6121kB/s), 1388KiB/s-2135KiB/s (1422kB/s-2186kB/s), io=28.0MiB (29.4MB), run=3430-4797msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144900: Mon Aug 24 16:29:22 2026 read: IOPS=1, BW=1974KiB/s (2021kB/s)(7168KiB/3631msec) clat (msec): min=2, max=238, avg=163.62, stdev=78.21 lat (msec): min=2, max=238, avg=163.62, stdev=78.21 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 144], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 182], 60.00th=[ 199], | 70.00th=[ 199], 80.00th=[ 222], 90.00th=[ 239], 95.00th=[ 239], | 99.00th=[ 239], 99.50th=[ 239], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 2003, max= 4363, per=77.93%, avg=3476.33, stdev=1284.73, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1410KiB/s (1444kB/s)(5120KiB/3631msec); 0 zone resets clat (msec): min=293, max=643, avg=496.35, stdev=133.45 lat (msec): min=293, max=643, avg=496.48, stdev=133.48 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1950, max= 2031, per=31.89%, avg=1992.00, stdev=34.01, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 4=8.33%, 250=50.00%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=9.64%, ctx=189, 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=144901: Mon Aug 24 16:29:22 2026 read: IOPS=0, BW=446KiB/s (457kB/s)(2048KiB/4590msec) clat (msec): min=341, max=355, avg=348.51, stdev=10.07 lat (msec): min=341, max=355, avg=348.51, stdev=10.07 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 1535, max= 2003, per=39.65%, avg=1769.00, stdev=330.93, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2231KiB/s (2284kB/s)(10.0MiB/4590msec); 0 zone resets clat (msec): min=173, max=559, avg=388.79, stdev=141.73 lat (msec): min=173, max=559, avg=388.89, stdev=141.72 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 226], | 30.00th=[ 247], 40.00th=[ 300], 50.00th=[ 384], 60.00th=[ 472], | 70.00th=[ 489], 80.00th=[ 498], 90.00th=[ 535], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1950, max= 4087, per=42.82%, avg=2674.33, stdev=1041.17, samples=6 iops : min= 1, max= 3, avg= 1.83, stdev= 0.98, samples=6 lat (msec) : 250=25.00%, 500=58.33%, 750=16.67% cpu : usr=0.00%, sys=11.31%, ctx=168, 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=144902: Mon Aug 24 16:29:22 2026 read: IOPS=1, BW=1830KiB/s (1874kB/s)(6144KiB/3357msec) clat (usec): min=451, max=252355, avg=162778.07, stdev=124934.73 lat (usec): min=452, max=252356, avg=162779.24, stdev=124934.74 clat percentiles (usec): | 1.00th=[ 453], 5.00th=[ 453], 10.00th=[ 453], 20.00th=[ 2900], | 30.00th=[ 2900], 40.00th=[233833], 50.00th=[233833], 60.00th=[242222], | 70.00th=[246416], 80.00th=[246416], 90.00th=[252707], 95.00th=[252707], | 99.00th=[252707], 99.50th=[252707], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 1950, max= 4063, per=56.04%, avg=2500.00, stdev=1042.23, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1830KiB/s (1874kB/s)(6144KiB/3357msec); 0 zone resets clat (msec): min=133, max=765, avg=395.19, stdev=283.99 lat (msec): min=133, max=765, avg=395.26, stdev=283.99 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 234], 50.00th=[ 234], 60.00th=[ 309], | 70.00th=[ 743], 80.00th=[ 743], 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= 1950, max= 2921, per=34.68%, avg=2166.20, stdev=422.38, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 500=8.33% lat (msec) : 4=8.33%, 250=50.00%, 500=16.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=13.29%, ctx=144, 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=144903: Mon Aug 24 16:29:22 2026 read: IOPS=1, BW=1163KiB/s (1191kB/s)(5120KiB/4403msec) clat (usec): min=589, max=452037, avg=264480.43, stdev=176135.30 lat (usec): min=590, max=452038, avg=264481.43, stdev=176135.19 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[ 586], | 30.00th=[183501], 40.00th=[183501], 50.00th=[329253], 60.00th=[329253], | 70.00th=[354419], 80.00th=[354419], 90.00th=[450888], 95.00th=[450888], | 99.00th=[450888], 99.50th=[450888], 99.90th=[450888], 99.95th=[450888], | 99.99th=[450888] bw ( KiB/s): min= 4007, max= 4087, per=90.72%, avg=4047.00, stdev=56.57, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1628KiB/s (1667kB/s)(7168KiB/4403msec); 0 zone resets clat (msec): min=157, max=957, avg=439.67, stdev=325.50 lat (msec): min=157, max=958, avg=439.88, stdev=325.73 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 161], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 275], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 785], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 1532, max= 6144, per=43.49%, avg=2716.60, stdev=1925.34, samples=5 iops : min= 1, max= 6, avg= 2.00, stdev= 2.24, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=33.33%, 500=33.33%, 750=8.33%, 1000=16.67% cpu : usr=0.05%, sys=10.25%, ctx=128, 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=4462KiB/s (4569kB/s), 446KiB/s-1974KiB/s (457kB/s-2021kB/s), io=20.0MiB (20.0MB), run=3357-4590msec WRITE: bw=6247KiB/s (6397kB/s), 1410KiB/s-2231KiB/s (1444kB/s-2284kB/s), io=28.0MiB (29.4MB), run=3357-4590msec 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=144912: Mon Aug 24 16:29:37 2026 read: IOPS=0, BW=3553KiB/s (3639kB/s)(12.0MiB/3458msec) clat (msec): min=397, max=1507, avg=1104.19, stdev=613.70 lat (msec): min=397, max=1507, avg=1104.19, stdev=613.70 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 1401], | 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= 8110, max= 8143, per=100.00%, avg=8126.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.12%, sys=2.49%, ctx=43, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144914: Mon Aug 24 16:29:37 2026 read: IOPS=0, BW=1336KiB/s (1368kB/s)(4096KiB/3067msec) clat (nsec): min=260430k, max=260430k, avg=260429719.00, stdev= 0.00 lat (nsec): min=260432k, max=260432k, avg=260432467.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 262], 40.00th=[ 262], 50.00th=[ 262], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 262], 90.00th=[ 262], 95.00th=[ 262], | 99.00th=[ 262], 99.50th=[ 262], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 6872, max= 6872, per=100.00%, avg=6872.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2671KiB/s (2735kB/s)(8192KiB/3067msec); 0 zone resets clat (msec): min=1177, max=1523, avg=1350.84, stdev=244.64 lat (msec): min=1178, max=1524, avg=1351.55, stdev=245.02 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1519], | 70.00th=[ 1519], 80.00th=[ 1519], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 8192, max= 8192, per=89.45%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.14%, 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=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=144916: Mon Aug 24 16:29:37 2026 write: IOPS=0, BW=3586KiB/s (3672kB/s)(12.0MiB/3427msec); 0 zone resets clat (msec): min=745, max=1431, avg=1077.61, stdev=343.15 lat (msec): min=752, max=1431, avg=1080.15, stdev=340.09 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 1053], 50.00th=[ 1053], 60.00th=[ 1053], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7922, max= 8192, per=87.98%, avg=8057.00, stdev=190.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=7.82%, ctx=92, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144918: Mon Aug 24 16:29:37 2026 write: IOPS=0, BW=3434KiB/s (3517kB/s)(12.0MiB/3578msec); 0 zone resets clat (msec): min=308, max=1582, avg=1140.57, stdev=721.04 lat (msec): min=308, max=1583, avg=1140.87, stdev=721.16 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 1536], | 70.00th=[ 1586], 80.00th=[ 1586], 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= 8143, max= 8143, per=88.92%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.35%, 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=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=4738KiB/s (4852kB/s), 1336KiB/s-3553KiB/s (1368kB/s-3639kB/s), io=16.0MiB (16.8MB), run=3067-3458msec WRITE: bw=9158KiB/s (9378kB/s), 2671KiB/s-3586KiB/s (2735kB/s-3672kB/s), io=32.0MiB (33.6MB), run=3067-3578msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144911: Mon Aug 24 16:29:37 2026 read: IOPS=0, BW=4026KiB/s (4123kB/s)(12.0MiB/3052msec) clat (msec): min=823, max=1125, avg=992.73, stdev=154.33 lat (msec): min=823, max=1125, avg=992.73, stdev=154.33 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 1028], 50.00th=[ 1028], 60.00th=[ 1028], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7861, max= 8126, per=100.00%, avg=7993.50, stdev=187.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=10.55%, ctx=178, 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=144913: Mon Aug 24 16:29:37 2026 read: IOPS=0, BW=1066KiB/s (1091kB/s)(4096KiB/3844msec) clat (nsec): min=773732k, max=773732k, avg=773731972.00, stdev= 0.00 lat (nsec): min=773733k, max=773733k, avg=773732975.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7861, max= 7861, per=100.00%, avg=7861.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2131KiB/s (2182kB/s)(8192KiB/3844msec); 0 zone resets clat (msec): min=1071, max=1856, avg=1464.19, stdev=555.26 lat (msec): min=1073, max=1859, avg=1466.27, stdev=555.80 clat percentiles (msec): | 1.00th=[ 1070], 5.00th=[ 1070], 10.00th=[ 1070], 20.00th=[ 1070], | 30.00th=[ 1070], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 1854], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.07%, ctx=93, 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=144915: Mon Aug 24 16:29:37 2026 write: IOPS=0, BW=3034KiB/s (3107kB/s)(12.0MiB/4050msec); 0 zone resets clat (msec): min=299, max=1891, avg=1258.08, stdev=844.52 lat (msec): min=299, max=1891, avg=1258.33, stdev=844.54 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 1586], 50.00th=[ 1586], 60.00th=[ 1586], | 70.00th=[ 1888], 80.00th=[ 1888], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 8078, max= 8126, per=100.00%, avg=8102.00, stdev=33.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.22%, ctx=39, 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=144917: Mon Aug 24 16:29:37 2026 write: IOPS=1, BW=5141KiB/s (5265kB/s)(12.0MiB/2390msec); 0 zone resets clat (msec): min=392, max=1063, avg=751.09, stdev=338.07 lat (msec): min=392, max=1063, avg=751.39, stdev=338.13 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 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= 7861, max= 8126, per=98.81%, avg=7993.50, stdev=187.38, 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=4.27%, ctx=42, 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=4262KiB/s (4365kB/s), 1066KiB/s-4026KiB/s (1091kB/s-4123kB/s), io=16.0MiB (16.8MB), run=3052-3844msec WRITE: bw=8091KiB/s (8285kB/s), 2131KiB/s-5141KiB/s (2182kB/s-5265kB/s), io=32.0MiB (33.6MB), run=2390-4050msec