== sanity test 398b: DIO and buffer IO race ============== 06:37:10 (1787395030) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.14605 s, 7.0 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=178521: Sat Aug 22 06:39:41 2026 read: IOPS=11, BW=46.0KiB/s (47.1kB/s)(5992KiB/130242msec) clat (usec): min=35, max=613746, avg=47894.78, stdev=33830.34 lat (usec): min=35, max=613746, avg=47902.17, stdev=33831.05 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 12387], 10.00th=[ 17957], 20.00th=[ 23987], | 30.00th=[ 29492], 40.00th=[ 34866], 50.00th=[ 40633], 60.00th=[ 48497], | 70.00th=[ 56886], 80.00th=[ 67634], 90.00th=[ 85459], 95.00th=[103285], | 99.00th=[160433], 99.50th=[181404], 99.90th=[256902], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 7, max= 112, per=24.94%, avg=45.64, stdev=17.58, samples=256 iops : min= 1, max= 28, avg=10.73, stdev= 4.44, samples=256 write: IOPS=12, BW=48.3KiB/s (49.5kB/s)(6296KiB/130242msec); 0 zone resets clat (usec): min=907, max=363036, avg=36863.95, stdev=38084.66 lat (usec): min=908, max=363037, avg=36867.15, stdev=38085.36 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1385], 10.00th=[ 1827], 20.00th=[ 4359], | 30.00th=[ 9110], 40.00th=[ 16712], 50.00th=[ 27395], 60.00th=[ 35390], | 70.00th=[ 47973], 80.00th=[ 63701], 90.00th=[ 86508], 95.00th=[112722], | 99.00th=[154141], 99.50th=[181404], 99.90th=[274727], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 7, max= 111, per=24.83%, avg=47.68, stdev=20.88, samples=257 iops : min= 1, max= 27, avg=11.25, stdev= 5.26, samples=257 lat (usec) : 50=0.10%, 100=1.30%, 250=0.07%, 500=0.07%, 1000=0.07% lat (msec) : 2=5.57%, 4=3.87%, 10=7.10%, 20=9.96%, 50=39.42% lat (msec) : 100=26.17%, 250=6.15%, 500=0.13%, 750=0.03% cpu : usr=0.07%, sys=5.15%, ctx=6664, 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=178522: Sat Aug 22 06:39:41 2026 read: IOPS=11, BW=47.3KiB/s (48.4kB/s)(5940KiB/125703msec) clat (usec): min=44, max=309925, avg=47160.25, stdev=32367.60 lat (usec): min=44, max=309926, avg=47165.44, stdev=32365.93 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 12518], 10.00th=[ 17171], 20.00th=[ 23725], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 40633], 60.00th=[ 46400], | 70.00th=[ 54789], 80.00th=[ 66847], 90.00th=[ 84411], 95.00th=[101188], | 99.00th=[173016], 99.50th=[208667], 99.90th=[295699], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 111, per=25.50%, avg=46.67, stdev=18.64, samples=248 iops : min= 1, max= 27, avg=10.98, stdev= 4.71, samples=248 write: IOPS=12, BW=50.5KiB/s (51.7kB/s)(6348KiB/125703msec); 0 zone resets clat (usec): min=829, max=603154, avg=34757.53, stdev=39682.14 lat (usec): min=830, max=603155, avg=34762.56, stdev=39682.15 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1352], 10.00th=[ 1729], 20.00th=[ 4178], | 30.00th=[ 7767], 40.00th=[ 14746], 50.00th=[ 23725], 60.00th=[ 32900], | 70.00th=[ 43254], 80.00th=[ 58459], 90.00th=[ 82314], 95.00th=[104334], | 99.00th=[168821], 99.50th=[179307], 99.90th=[438305], 99.95th=[599786], | 99.99th=[599786] bw ( KiB/s): min= 7, max= 127, per=25.97%, avg=49.87, stdev=21.67, samples=248 iops : min= 1, max= 31, avg=11.79, stdev= 5.46, samples=248 lat (usec) : 50=0.20%, 100=1.14%, 250=0.10%, 750=0.07%, 1000=0.03% lat (msec) : 2=5.89%, 4=4.20%, 10=7.98%, 20=10.22%, 50=39.88% lat (msec) : 100=24.71%, 250=5.40%, 500=0.16%, 750=0.03% cpu : usr=0.09%, sys=5.02%, ctx=6504, 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=178523: Sat Aug 22 06:39:41 2026 read: IOPS=12, BW=48.4KiB/s (49.6kB/s)(6028KiB/124540msec) clat (usec): min=40, max=622658, avg=47151.75, stdev=35420.68 lat (usec): min=41, max=622659, avg=47155.97, stdev=35420.44 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 12387], 10.00th=[ 17171], 20.00th=[ 23725], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 47449], | 70.00th=[ 54789], 80.00th=[ 66323], 90.00th=[ 81265], 95.00th=[ 98042], | 99.00th=[162530], 99.50th=[206570], 99.90th=[421528], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 7, max= 95, per=26.11%, avg=47.78, stdev=18.22, samples=245 iops : min= 1, max= 23, avg=11.26, stdev= 4.59, samples=245 write: IOPS=12, BW=50.3KiB/s (51.5kB/s)(6260KiB/124540msec); 0 zone resets clat (usec): min=892, max=296022, avg=33874.48, stdev=36269.08 lat (usec): min=893, max=296024, avg=33880.24, stdev=36268.96 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1385], 10.00th=[ 1614], 20.00th=[ 3654], | 30.00th=[ 6652], 40.00th=[ 13698], 50.00th=[ 22938], 60.00th=[ 31589], | 70.00th=[ 43779], 80.00th=[ 61080], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[147850], 99.50th=[185598], 99.90th=[263193], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 143, per=25.89%, avg=49.70, stdev=21.39, samples=244 iops : min= 1, max= 35, avg=11.75, stdev= 5.37, samples=244 lat (usec) : 50=0.29%, 100=1.20%, 250=0.10%, 750=0.03%, 1000=0.13% lat (msec) : 2=6.38%, 4=4.23%, 10=7.81%, 20=10.77%, 50=38.25% lat (msec) : 100=25.46%, 250=5.14%, 500=0.16%, 750=0.03% cpu : usr=0.07%, sys=5.23%, ctx=6537, 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=178524: Sat Aug 22 06:39:41 2026 read: IOPS=11, BW=46.3KiB/s (47.4kB/s)(6052KiB/130642msec) clat (usec): min=33, max=281643, avg=47241.67, stdev=30997.12 lat (usec): min=34, max=281643, avg=47243.55, stdev=30997.06 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 11600], 10.00th=[ 17433], 20.00th=[ 23725], | 30.00th=[ 29492], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 47973], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 83362], 95.00th=[101188], | 99.00th=[156238], 99.50th=[189793], 99.90th=[231736], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 119, per=24.93%, avg=45.62, stdev=17.78, samples=256 iops : min= 1, max= 29, avg=10.73, stdev= 4.47, samples=256 write: IOPS=11, BW=47.7KiB/s (48.9kB/s)(6236KiB/130642msec); 0 zone resets clat (usec): min=1101, max=686789, avg=37612.56, stdev=42874.31 lat (usec): min=1102, max=686790, avg=37621.08, stdev=42875.16 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1385], 10.00th=[ 1778], 20.00th=[ 4228], | 30.00th=[ 8094], 40.00th=[ 16581], 50.00th=[ 26608], 60.00th=[ 34341], | 70.00th=[ 45351], 80.00th=[ 63701], 90.00th=[ 90702], 95.00th=[117965], | 99.00th=[170918], 99.50th=[206570], 99.90th=[295699], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 111, per=24.66%, avg=47.34, stdev=19.71, samples=255 iops : min= 1, max= 27, avg=11.16, stdev= 4.96, samples=255 lat (usec) : 50=0.39%, 100=1.56% lat (msec) : 2=5.57%, 4=4.10%, 10=7.23%, 20=9.47%, 50=39.45% lat (msec) : 100=25.59%, 250=6.51%, 500=0.10%, 750=0.03% cpu : usr=0.09%, sys=4.82%, ctx=6483, 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=184KiB/s (188kB/s), 46.0KiB/s-48.4KiB/s (47.1kB/s-49.6kB/s), io=23.4MiB (24.6MB), run=124540-130642msec WRITE: bw=192KiB/s (197kB/s), 47.7KiB/s-50.5KiB/s (48.9kB/s-51.7kB/s), io=24.6MiB (25.7MB), run=124540-130642msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178526: Sat Aug 22 06:40:28 2026 read: IOPS=8, BW=33.9KiB/s (34.7kB/s)(5992KiB/177006msec) clat (msec): min=5, max=633, avg=46.81, stdev=43.57 lat (msec): min=5, max=633, avg=46.81, stdev=43.57 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 49], 80.00th=[ 66], 90.00th=[ 104], 95.00th=[ 132], | 99.00th=[ 207], 99.50th=[ 230], 99.90th=[ 342], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 168, per=25.39%, avg=34.27, stdev=22.45, samples=337 iops : min= 1, max= 42, avg= 7.91, stdev= 5.66, samples=337 write: IOPS=8, BW=35.6KiB/s (36.4kB/s)(6296KiB/177006msec); 0 zone resets clat (msec): min=10, max=499, avg=67.79, stdev=47.81 lat (msec): min=10, max=499, avg=67.79, stdev=47.81 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 63], | 70.00th=[ 77], 80.00th=[ 96], 90.00th=[ 131], 95.00th=[ 167], | 99.00th=[ 230], 99.50th=[ 279], 99.90th=[ 384], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 7, max= 152, per=24.72%, avg=35.10, stdev=21.24, samples=346 iops : min= 1, max= 38, avg= 8.11, stdev= 5.35, samples=346 lat (msec) : 10=1.79%, 20=12.01%, 50=44.50%, 100=26.86%, 250=14.36% lat (msec) : 500=0.46%, 750=0.03% cpu : usr=0.06%, sys=2.01%, ctx=5069, 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=178527: Sat Aug 22 06:40:28 2026 read: IOPS=8, BW=33.7KiB/s (34.5kB/s)(5940KiB/176197msec) clat (msec): min=5, max=739, avg=45.96, stdev=43.69 lat (msec): min=5, max=739, avg=45.97, stdev=43.69 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 66], 90.00th=[ 97], 95.00th=[ 130], | 99.00th=[ 209], 99.50th=[ 232], 99.90th=[ 334], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 144, per=25.65%, avg=34.62, stdev=22.65, samples=333 iops : min= 1, max= 36, avg= 7.99, stdev= 5.68, samples=333 write: IOPS=9, BW=36.0KiB/s (36.9kB/s)(6348KiB/176197msec); 0 zone resets clat (msec): min=10, max=516, avg=67.91, stdev=47.70 lat (msec): min=10, max=516, avg=67.91, stdev=47.70 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 64], | 70.00th=[ 79], 80.00th=[ 97], 90.00th=[ 127], 95.00th=[ 161], | 99.00th=[ 251], 99.50th=[ 279], 99.90th=[ 380], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 7, max= 144, per=25.17%, avg=35.74, stdev=20.45, samples=345 iops : min= 1, max= 36, avg= 8.27, stdev= 5.16, samples=345 lat (msec) : 10=1.82%, 20=12.83%, 50=43.52%, 100=27.83%, 250=13.35% lat (msec) : 500=0.59%, 750=0.07% cpu : usr=0.06%, sys=1.96%, ctx=4985, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178528: Sat Aug 22 06:40:28 2026 read: IOPS=8, BW=34.2KiB/s (35.0kB/s)(6028KiB/176151msec) clat (msec): min=5, max=335, avg=45.93, stdev=39.76 lat (msec): min=5, max=335, avg=45.93, stdev=39.76 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 68], 90.00th=[ 102], 95.00th=[ 128], | 99.00th=[ 186], 99.50th=[ 207], 99.90th=[ 330], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 7, max= 142, per=25.42%, avg=34.31, stdev=22.24, samples=340 iops : min= 1, max= 35, avg= 7.91, stdev= 5.60, samples=340 write: IOPS=8, BW=35.5KiB/s (36.4kB/s)(6260KiB/176151msec); 0 zone resets clat (msec): min=12, max=764, avg=68.25, stdev=50.07 lat (msec): min=12, max=764, avg=68.25, stdev=50.07 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 63], | 70.00th=[ 77], 80.00th=[ 97], 90.00th=[ 136], 95.00th=[ 167], | 99.00th=[ 234], 99.50th=[ 279], 99.90th=[ 363], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 144, per=24.82%, avg=35.24, stdev=22.02, samples=344 iops : min= 1, max= 36, avg= 8.14, stdev= 5.55, samples=344 lat (msec) : 10=2.08%, 20=11.91%, 50=43.72%, 100=27.73%, 250=14.06% lat (msec) : 500=0.46%, 1000=0.03% cpu : usr=0.06%, sys=1.96%, ctx=4992, 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=178529: Sat Aug 22 06:40:28 2026 read: IOPS=8, BW=34.5KiB/s (35.4kB/s)(6052KiB/175302msec) clat (msec): min=5, max=295, avg=46.17, stdev=40.31 lat (msec): min=5, max=295, avg=46.18, stdev=40.31 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 49], 80.00th=[ 65], 90.00th=[ 101], 95.00th=[ 128], | 99.00th=[ 205], 99.50th=[ 230], 99.90th=[ 284], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 112, per=26.01%, avg=35.11, stdev=21.33, samples=335 iops : min= 1, max= 28, avg= 8.11, stdev= 5.36, samples=335 write: IOPS=8, BW=35.6KiB/s (36.4kB/s)(6236KiB/175302msec); 0 zone resets clat (msec): min=8, max=771, avg=67.55, stdev=48.81 lat (msec): min=8, max=771, avg=67.55, stdev=48.81 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 64], | 70.00th=[ 79], 80.00th=[ 96], 90.00th=[ 130], 95.00th=[ 153], | 99.00th=[ 218], 99.50th=[ 279], 99.90th=[ 393], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 128, per=24.94%, avg=35.42, stdev=20.96, samples=342 iops : min= 1, max= 32, avg= 8.19, stdev= 5.29, samples=342 lat (msec) : 10=1.86%, 20=12.14%, 50=44.89%, 100=26.79%, 250=13.80% lat (msec) : 500=0.49%, 1000=0.03% cpu : usr=0.06%, sys=2.01%, ctx=4948, 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=136KiB/s (139kB/s), 33.7KiB/s-34.5KiB/s (34.5kB/s-35.4kB/s), io=23.4MiB (24.6MB), run=175302-177006msec WRITE: bw=142KiB/s (145kB/s), 35.5KiB/s-36.0KiB/s (36.4kB/s-36.9kB/s), io=24.6MiB (25.7MB), run=175302-177006msec 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=178578: Sat Aug 22 06:41:18 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(5920KiB/36354msec) clat (usec): min=43, max=244599, avg=51988.76, stdev=35912.58 lat (usec): min=44, max=244600, avg=51990.10, stdev=35912.67 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 70], 10.00th=[ 17695], 20.00th=[ 27132], | 30.00th=[ 34341], 40.00th=[ 38011], 50.00th=[ 45351], 60.00th=[ 53216], | 70.00th=[ 62653], 80.00th=[ 73925], 90.00th=[ 91751], 95.00th=[117965], | 99.00th=[187696], 99.50th=[193987], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 62, max= 320, per=25.48%, avg=162.55, stdev=59.73, samples=71 iops : min= 3, max= 20, avg= 9.41, stdev= 3.82, samples=71 write: IOPS=10, BW=175KiB/s (179kB/s)(6368KiB/36354msec); 0 zone resets clat (usec): min=1394, max=269375, avg=41843.80, stdev=40642.01 lat (usec): min=1396, max=269384, avg=41885.82, stdev=40636.96 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2474], 10.00th=[ 3818], 20.00th=[ 7570], | 30.00th=[ 10814], 40.00th=[ 20055], 50.00th=[ 29754], 60.00th=[ 40109], | 70.00th=[ 53216], 80.00th=[ 76022], 90.00th=[ 98042], 95.00th=[117965], | 99.00th=[185598], 99.50th=[196084], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 381, per=26.51%, avg=178.11, stdev=71.09, samples=70 iops : min= 1, max= 23, avg=10.39, stdev= 4.50, samples=70 lat (usec) : 50=0.39%, 100=3.39%, 250=0.13%, 1000=0.26% lat (msec) : 2=1.43%, 4=3.91%, 10=8.85%, 20=8.20%, 50=36.33% lat (msec) : 100=29.30%, 250=7.68%, 500=0.13% cpu : usr=0.09%, sys=4.78%, ctx=1713, 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=178579: Sat Aug 22 06:41:18 2026 read: IOPS=9, BW=159KiB/s (163kB/s)(5744KiB/36179msec) clat (usec): min=53, max=312998, avg=51234.12, stdev=33331.44 lat (usec): min=55, max=313000, avg=51239.21, stdev=33331.52 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 110], 10.00th=[ 19268], 20.00th=[ 28181], | 30.00th=[ 34866], 40.00th=[ 39584], 50.00th=[ 45876], 60.00th=[ 53216], | 70.00th=[ 60031], 80.00th=[ 72877], 90.00th=[ 88605], 95.00th=[111674], | 99.00th=[147850], 99.50th=[202376], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 31, max= 320, per=24.73%, avg=157.79, stdev=70.71, samples=71 iops : min= 1, max= 20, avg= 9.10, stdev= 4.48, samples=71 write: IOPS=11, BW=181KiB/s (185kB/s)(6544KiB/36179msec); 0 zone resets clat (usec): min=1247, max=234841, avg=42931.60, stdev=41926.72 lat (usec): min=1249, max=234841, avg=42937.95, stdev=41923.29 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2442], 10.00th=[ 4228], 20.00th=[ 7046], | 30.00th=[ 13435], 40.00th=[ 21103], 50.00th=[ 29492], 60.00th=[ 39584], | 70.00th=[ 53216], 80.00th=[ 73925], 90.00th=[108528], 95.00th=[129500], | 99.00th=[173016], 99.50th=[187696], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 411, per=26.73%, avg=179.61, stdev=76.85, samples=71 iops : min= 1, max= 25, avg=10.48, stdev= 4.82, samples=71 lat (usec) : 100=2.21%, 250=0.78% lat (msec) : 2=1.43%, 4=3.52%, 10=8.59%, 20=9.11%, 50=36.07% lat (msec) : 100=29.56%, 250=8.59%, 500=0.13% cpu : usr=0.07%, sys=4.92%, ctx=1809, 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=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=178580: Sat Aug 22 06:41:18 2026 read: IOPS=10, BW=167KiB/s (171kB/s)(6256KiB/37486msec) clat (usec): min=39, max=238794, avg=50272.13, stdev=32839.36 lat (usec): min=39, max=238795, avg=50289.21, stdev=32849.74 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 63], 10.00th=[ 11469], 20.00th=[ 26608], | 30.00th=[ 32900], 40.00th=[ 40109], 50.00th=[ 45876], 60.00th=[ 53216], | 70.00th=[ 60031], 80.00th=[ 74974], 90.00th=[ 89654], 95.00th=[107480], | 99.00th=[143655], 99.50th=[238027], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 31, max= 349, per=26.50%, avg=169.05, stdev=71.74, samples=73 iops : min= 1, max= 21, avg= 9.81, stdev= 4.50, samples=73 write: IOPS=10, BW=161KiB/s (165kB/s)(6032KiB/37486msec); 0 zone resets clat (usec): min=1680, max=257189, avg=45861.34, stdev=44126.77 lat (usec): min=1682, max=257190, avg=45863.99, stdev=44126.64 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2376], 10.00th=[ 4817], 20.00th=[ 8848], | 30.00th=[ 14353], 40.00th=[ 22152], 50.00th=[ 32113], 60.00th=[ 40633], | 70.00th=[ 60031], 80.00th=[ 82314], 90.00th=[108528], 95.00th=[132645], | 99.00th=[191890], 99.50th=[219153], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 31, max= 319, per=24.17%, avg=162.44, stdev=69.51, samples=73 iops : min= 1, max= 19, avg= 9.40, stdev= 4.39, samples=73 lat (usec) : 50=0.13%, 100=4.17%, 250=0.13%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=1.17%, 4=2.99%, 10=7.55%, 20=8.46%, 50=35.81% lat (msec) : 100=29.04%, 250=10.03%, 500=0.13% cpu : usr=0.05%, sys=5.07%, ctx=1858, 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=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=178581: Sat Aug 22 06:41:18 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(6032KiB/36937msec) clat (usec): min=49, max=213456, avg=53428.50, stdev=36813.75 lat (usec): min=50, max=213458, avg=53432.21, stdev=36812.18 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 1582], 20.00th=[ 26346], | 30.00th=[ 32900], 40.00th=[ 40109], 50.00th=[ 47973], 60.00th=[ 56886], | 70.00th=[ 65799], 80.00th=[ 80217], 90.00th=[100140], 95.00th=[116917], | 99.00th=[173016], 99.50th=[200279], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 63, max= 345, per=25.84%, avg=164.89, stdev=59.49, samples=71 iops : min= 3, max= 21, avg= 9.55, stdev= 3.77, samples=71 write: IOPS=10, BW=169KiB/s (173kB/s)(6256KiB/36937msec); 0 zone resets clat (usec): min=1382, max=266883, avg=41460.60, stdev=44152.46 lat (usec): min=1383, max=266884, avg=41462.87, stdev=44152.45 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2114], 10.00th=[ 3621], 20.00th=[ 6849], | 30.00th=[ 10290], 40.00th=[ 16057], 50.00th=[ 25822], 60.00th=[ 35914], | 70.00th=[ 50594], 80.00th=[ 71828], 90.00th=[105382], 95.00th=[135267], | 99.00th=[175113], 99.50th=[256902], 99.90th=[267387], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 31, max= 403, per=25.58%, avg=171.93, stdev=78.91, samples=71 iops : min= 1, max= 25, avg=10.00, stdev= 5.00, samples=71 lat (usec) : 50=0.13%, 100=4.04%, 250=0.39%, 500=0.13%, 1000=0.13% lat (msec) : 2=2.34%, 4=3.78%, 10=9.38%, 20=10.16%, 50=30.73% lat (msec) : 100=27.99%, 250=10.55%, 500=0.26% cpu : usr=0.05%, sys=4.93%, ctx=1800, 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=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=639KiB/s (654kB/s), 159KiB/s-167KiB/s (163kB/s-171kB/s), io=23.4MiB (24.5MB), run=36179-37486msec WRITE: bw=672KiB/s (688kB/s), 161KiB/s-181KiB/s (165kB/s-185kB/s), io=24.6MiB (25.8MB), run=36179-37486msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178573: Sat Aug 22 06:41:30 2026 read: IOPS=7, BW=121KiB/s (124kB/s)(5920KiB/49001msec) clat (msec): min=8, max=233, avg=50.19, stdev=41.57 lat (msec): min=8, max=233, avg=50.20, stdev=41.56 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 54], 80.00th=[ 75], 90.00th=[ 104], 95.00th=[ 140], | 99.00th=[ 224], 99.50th=[ 232], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 31, max= 372, per=25.11%, avg=122.29, stdev=81.11, samples=94 iops : min= 1, max= 23, avg= 6.84, stdev= 5.14, samples=94 write: IOPS=8, BW=130KiB/s (133kB/s)(6368KiB/49001msec); 0 zone resets clat (msec): min=16, max=351, avg=75.18, stdev=52.85 lat (msec): min=16, max=351, avg=75.19, stdev=52.85 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 47], 50.00th=[ 59], 60.00th=[ 70], | 70.00th=[ 88], 80.00th=[ 113], 90.00th=[ 150], 95.00th=[ 180], | 99.00th=[ 268], 99.50th=[ 279], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 381, per=25.83%, avg=132.51, stdev=78.48, samples=94 iops : min= 1, max= 23, avg= 7.47, stdev= 4.97, samples=94 lat (msec) : 10=0.52%, 20=10.03%, 50=43.88%, 100=27.34%, 250=17.32% lat (msec) : 500=0.91% cpu : usr=0.06%, sys=1.91%, ctx=1267, 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=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=178574: Sat Aug 22 06:41:30 2026 read: IOPS=7, BW=117KiB/s (120kB/s)(5744KiB/49088msec) clat (msec): min=9, max=241, avg=51.63, stdev=43.87 lat (msec): min=9, max=241, avg=51.63, stdev=43.87 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 55], 80.00th=[ 74], 90.00th=[ 112], 95.00th=[ 146], | 99.00th=[ 226], 99.50th=[ 239], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 22, max= 414, per=24.35%, avg=118.60, stdev=82.75, samples=94 iops : min= 1, max= 25, avg= 6.60, stdev= 5.23, samples=94 write: IOPS=8, BW=133KiB/s (137kB/s)(6544KiB/49088msec); 0 zone resets clat (msec): min=14, max=358, avg=73.77, stdev=48.25 lat (msec): min=14, max=358, avg=73.77, stdev=48.25 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 37], | 30.00th=[ 43], 40.00th=[ 52], 50.00th=[ 58], 60.00th=[ 67], | 70.00th=[ 84], 80.00th=[ 112], 90.00th=[ 142], 95.00th=[ 171], | 99.00th=[ 215], 99.50th=[ 275], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 477, per=26.00%, avg=133.36, stdev=81.91, samples=95 iops : min= 1, max= 29, avg= 7.53, stdev= 5.18, samples=95 lat (msec) : 10=0.52%, 20=8.85%, 50=42.71%, 100=28.78%, 250=18.75% lat (msec) : 500=0.39% cpu : usr=0.07%, sys=1.92%, ctx=1252, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178576: Sat Aug 22 06:41:30 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(6256KiB/48199msec) clat (msec): min=7, max=243, avg=49.62, stdev=40.71 lat (msec): min=7, max=243, avg=49.62, stdev=40.71 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 54], 80.00th=[ 67], 90.00th=[ 104], 95.00th=[ 140], | 99.00th=[ 220], 99.50th=[ 222], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 31, max= 383, per=26.52%, avg=129.16, stdev=83.22, samples=94 iops : min= 1, max= 23, avg= 7.26, stdev= 5.24, samples=94 write: IOPS=7, BW=125KiB/s (128kB/s)(6032KiB/48199msec); 0 zone resets clat (msec): min=14, max=284, avg=76.12, stdev=49.26 lat (msec): min=14, max=284, avg=76.12, stdev=49.26 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 37], | 30.00th=[ 43], 40.00th=[ 52], 50.00th=[ 59], 60.00th=[ 73], | 70.00th=[ 90], 80.00th=[ 116], 90.00th=[ 150], 95.00th=[ 169], | 99.00th=[ 271], 99.50th=[ 279], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 30, max= 310, per=23.85%, avg=122.33, stdev=66.70, samples=94 iops : min= 1, max= 19, avg= 6.83, stdev= 4.21, samples=94 lat (msec) : 10=0.52%, 20=9.38%, 50=43.36%, 100=29.17%, 250=17.06% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.86%, ctx=1163, 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=178577: Sat Aug 22 06:41:30 2026 read: IOPS=7, BW=123KiB/s (126kB/s)(6032KiB/48889msec) clat (msec): min=7, max=258, avg=52.35, stdev=45.42 lat (msec): min=7, max=258, avg=52.35, stdev=45.43 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 37], 60.00th=[ 44], | 70.00th=[ 56], 80.00th=[ 77], 90.00th=[ 120], 95.00th=[ 153], | 99.00th=[ 218], 99.50th=[ 245], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 31, max= 508, per=26.53%, avg=129.20, stdev=85.95, samples=91 iops : min= 1, max= 31, avg= 7.26, stdev= 5.38, samples=91 write: IOPS=7, BW=128KiB/s (131kB/s)(6256KiB/48889msec); 0 zone resets clat (msec): min=12, max=252, avg=73.73, stdev=45.54 lat (msec): min=12, max=252, avg=73.74, stdev=45.54 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 37], | 30.00th=[ 43], 40.00th=[ 51], 50.00th=[ 59], 60.00th=[ 72], | 70.00th=[ 87], 80.00th=[ 111], 90.00th=[ 146], 95.00th=[ 163], | 99.00th=[ 218], 99.50th=[ 243], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 31, max= 320, per=24.93%, avg=127.87, stdev=72.75, samples=96 iops : min= 1, max= 20, avg= 7.18, stdev= 4.61, samples=96 lat (msec) : 10=0.78%, 20=10.29%, 50=41.80%, 100=29.30%, 250=17.58% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=1.79%, ctx=1168, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=488KiB/s (500kB/s), 117KiB/s-130KiB/s (120kB/s-133kB/s), io=23.4MiB (24.5MB), run=48199-49088msec WRITE: bw=513KiB/s (526kB/s), 125KiB/s-133KiB/s (128kB/s-137kB/s), io=24.6MiB (25.8MB), run=48199-49088msec 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=178593: Sat Aug 22 06:41:49 2026 read: IOPS=0, BW=1017KiB/s (1041kB/s)(7168KiB/7049msec) clat (msec): min=13, max=3537, avg=714.30, stdev=1251.46 lat (msec): min=13, max=3537, avg=714.30, stdev=1251.46 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 14], 10.00th=[ 14], 20.00th=[ 220], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 266], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 447], 90.00th=[ 3540], 95.00th=[ 3540], | 99.00th=[ 3540], 99.50th=[ 3540], 99.90th=[ 3540], 99.95th=[ 3540], | 99.99th=[ 3540] bw ( KiB/s): min= 1686, max= 4063, per=92.14%, avg=2366.20, stdev=960.12, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=726KiB/s (744kB/s)(5120KiB/7049msec); 0 zone resets clat (msec): min=219, max=588, avg=365.42, stdev=148.34 lat (msec): min=219, max=588, avg=366.23, stdev=147.67 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 220], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 2003, max= 4055, per=75.16%, avg=2702.00, stdev=1171.95, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 20=8.33%, 250=25.00%, 500=50.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=6.77%, ctx=387, 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=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=178594: Sat Aug 22 06:41:49 2026 read: IOPS=0, BW=257KiB/s (263kB/s)(2048KiB/7974msec) clat (msec): min=299, max=337, avg=318.65, stdev=26.68 lat (msec): min=301, max=337, avg=319.44, stdev=25.58 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 1662, max= 1980, per=70.91%, avg=1821.00, stdev=224.86, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1284KiB/s (1315kB/s)(10.0MiB/7974msec); 0 zone resets clat (msec): min=178, max=3054, avg=727.42, stdev=856.49 lat (msec): min=178, max=3054, avg=727.54, stdev=856.47 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 197], | 30.00th=[ 284], 40.00th=[ 376], 50.00th=[ 397], 60.00th=[ 542], | 70.00th=[ 550], 80.00th=[ 651], 90.00th=[ 1045], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min= 2003, max= 6119, per=72.65%, avg=2611.71, stdev=1546.64, samples=7 iops : min= 1, max= 5, avg= 1.71, stdev= 1.50, samples=7 lat (msec) : 250=16.67%, 500=41.67%, 750=25.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=6.33%, ctx=119, 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=178595: Sat Aug 22 06:41:49 2026 read: IOPS=0, BW=900KiB/s (921kB/s)(6144KiB/6830msec) clat (usec): min=731, max=245345, avg=83092.09, stdev=98515.33 lat (usec): min=733, max=245347, avg=83093.69, stdev=98515.29 clat percentiles (usec): | 1.00th=[ 734], 5.00th=[ 734], 10.00th=[ 734], 20.00th=[ 2769], | 30.00th=[ 2769], 40.00th=[ 11994], 50.00th=[ 11994], 60.00th=[ 92799], | 70.00th=[145753], 80.00th=[145753], 90.00th=[244319], 95.00th=[244319], | 99.00th=[244319], 99.50th=[244319], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 1980, max= 4055, per=98.02%, avg=2517.25, stdev=1025.38, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=900KiB/s (921kB/s)(6144KiB/6830msec); 0 zone resets clat (msec): min=202, max=3737, avg=1017.85, stdev=1357.95 lat (msec): min=202, max=3738, avg=1018.06, stdev=1358.22 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 718], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 3742], 95.00th=[ 3742], | 99.00th=[ 3742], 99.50th=[ 3742], 99.90th=[ 3742], 99.95th=[ 3742], | 99.99th=[ 3742] bw ( KiB/s): min= 2003, max= 2039, per=56.36%, avg=2026.20, stdev=13.68, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 20=8.33%, 100=8.33%, 250=25.00%, 500=16.67% lat (msec) : 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.80%, ctx=72, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178596: Sat Aug 22 06:41:49 2026 read: IOPS=0, BW=650KiB/s (666kB/s)(5120KiB/7872msec) clat (usec): min=615, max=321844, avg=180762.57, stdev=164573.12 lat (usec): min=616, max=321845, avg=180764.08, stdev=164573.06 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 619], 10.00th=[ 619], 20.00th=[ 619], | 30.00th=[ 2671], 40.00th=[ 2671], 50.00th=[270533], 60.00th=[270533], | 70.00th=[308282], 80.00th=[308282], 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= 1980, max= 6083, per=100.00%, avg=4031.50, stdev=2901.26, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=0, BW=911KiB/s (932kB/s)(7168KiB/7872msec); 0 zone resets clat (msec): min=260, max=3685, avg=981.65, stdev=1224.32 lat (msec): min=260, max=3690, avg=982.44, stdev=1226.10 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 451], 60.00th=[ 818], | 70.00th=[ 818], 80.00th=[ 995], 90.00th=[ 3675], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 1980, max= 4096, per=78.92%, avg=2837.00, stdev=1134.45, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 500=58.33%, 1000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=4.14%, ctx=156, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2568KiB/s (2630kB/s), 257KiB/s-1017KiB/s (263kB/s-1041kB/s), io=20.0MiB (20.0MB), run=6830-7974msec WRITE: bw=3596KiB/s (3682kB/s), 726KiB/s-1284KiB/s (744kB/s-1315kB/s), io=28.0MiB (29.4MB), run=6830-7974msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178598: Sat Aug 22 06:41:50 2026 read: IOPS=0, BW=902KiB/s (924kB/s)(7168KiB/7948msec) clat (msec): min=108, max=4533, avg=972.20, stdev=1583.27 lat (msec): min=108, max=4533, avg=972.20, stdev=1583.27 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 228], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 464], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 693], 90.00th=[ 4530], 95.00th=[ 4530], | 99.00th=[ 4530], 99.50th=[ 4530], 99.90th=[ 4530], 99.95th=[ 4530], | 99.99th=[ 4530] bw ( KiB/s): min= 1539, max= 2039, per=75.03%, avg=1932.67, stdev=194.85, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=644KiB/s (660kB/s)(5120KiB/7948msec); 0 zone resets clat (msec): min=122, max=266, avg=191.49, stdev=53.08 lat (msec): min=130, max=266, avg=193.64, stdev=50.17 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 201], 60.00th=[ 201], | 70.00th=[ 203], 80.00th=[ 203], 90.00th=[ 266], 95.00th=[ 266], | 99.00th=[ 266], 99.50th=[ 266], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 1961, max= 4079, per=74.33%, avg=2681.00, stdev=1210.89, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=58.33%, 500=16.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.03%, sys=1.99%, ctx=67, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178599: Sat Aug 22 06:41:50 2026 read: IOPS=0, BW=276KiB/s (283kB/s)(2048KiB/7418msec) clat (msec): min=238, max=244, avg=241.35, stdev= 4.25 lat (msec): min=238, max=244, avg=241.35, stdev= 4.25 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 245], | 70.00th=[ 245], 80.00th=[ 245], 90.00th=[ 245], 95.00th=[ 245], | 99.00th=[ 245], 99.50th=[ 245], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 1759, max= 2027, per=73.49%, avg=1893.00, stdev=189.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1380KiB/s (1414kB/s)(10.0MiB/7418msec); 0 zone resets clat (msec): min=140, max=4174, avg=685.05, stdev=1232.44 lat (msec): min=140, max=4175, avg=685.23, stdev=1232.43 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 153], | 30.00th=[ 205], 40.00th=[ 220], 50.00th=[ 288], 60.00th=[ 368], | 70.00th=[ 368], 80.00th=[ 401], 90.00th=[ 535], 95.00th=[ 4178], | 99.00th=[ 4178], 99.50th=[ 4178], 99.90th=[ 4178], 99.95th=[ 4178], | 99.99th=[ 4178] bw ( KiB/s): min= 1759, max= 4055, per=62.72%, avg=2262.14, stdev=796.12, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=1.79%, ctx=60, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178600: Sat Aug 22 06:41:50 2026 read: IOPS=0, BW=806KiB/s (825kB/s)(6144KiB/7623msec) clat (msec): min=136, max=374, avg=220.53, stdev=87.51 lat (msec): min=136, max=374, avg=220.53, stdev=87.51 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 224], | 70.00th=[ 247], 80.00th=[ 247], 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= 1961, max= 4055, per=100.00%, avg=2675.67, stdev=1194.80, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=806KiB/s (825kB/s)(6144KiB/7623msec); 0 zone resets clat (msec): min=162, max=4647, avg=1025.29, stdev=1781.15 lat (msec): min=162, max=4647, avg=1025.91, stdev=1780.84 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 296], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 4665], 95.00th=[ 4665], | 99.00th=[ 4665], 99.50th=[ 4665], 99.90th=[ 4665], 99.95th=[ 4665], | 99.99th=[ 4665] bw ( KiB/s): min= 1961, max= 3190, per=63.63%, avg=2295.25, stdev=597.12, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=58.33%, 500=25.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=2.02%, ctx=88, 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=178601: Sat Aug 22 06:41:50 2026 read: IOPS=0, BW=647KiB/s (663kB/s)(5120KiB/7908msec) clat (msec): min=122, max=519, avg=233.97, stdev=166.91 lat (msec): min=122, max=519, avg=233.97, stdev=166.91 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 124], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 146], 60.00th=[ 146], | 70.00th=[ 247], 80.00th=[ 247], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 1961, max= 4007, per=100.00%, avg=2659.67, stdev=1167.09, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=906KiB/s (928kB/s)(7168KiB/7908msec); 0 zone resets clat (msec): min=179, max=4172, avg=954.39, stdev=1442.26 lat (msec): min=180, max=4172, avg=954.51, stdev=1442.26 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 418], 60.00th=[ 514], | 70.00th=[ 514], 80.00th=[ 927], 90.00th=[ 4178], 95.00th=[ 4178], | 99.00th=[ 4178], 99.50th=[ 4178], 99.90th=[ 4178], 99.95th=[ 4178], | 99.99th=[ 4178] bw ( KiB/s): min= 1695, max= 4079, per=81.26%, avg=2931.00, stdev=1244.57, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 250=50.00%, 500=16.67%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=1.73%, ctx=83, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2577KiB/s (2639kB/s), 276KiB/s-902KiB/s (283kB/s-924kB/s), io=20.0MiB (20.0MB), run=7418-7948msec WRITE: bw=3607KiB/s (3694kB/s), 644KiB/s-1380KiB/s (660kB/s-1414kB/s), io=28.0MiB (29.4MB), run=7418-7948msec 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=178608: Sat Aug 22 06:42:06 2026 read: IOPS=2, BW=10.6MiB/s (11.1MB/s)(12.0MiB/1136msec) clat (msec): min=334, max=419, avg=369.29, stdev=44.45 lat (msec): min=334, max=419, avg=369.29, stdev=44.45 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7713, max= 7968, per=100.00%, avg=7840.50, stdev=180.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=7.75%, ctx=57, 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=178609: Sat Aug 22 06:42:06 2026 read: IOPS=0, BW=1893KiB/s (1938kB/s)(4096KiB/2164msec) clat (nsec): min=803456k, max=803456k, avg=803456359.00, stdev= 0.00 lat (nsec): min=803459k, max=803459k, avg=803458724.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7713, max= 7713, per=100.00%, avg=7713.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3786KiB/s (3876kB/s)(8192KiB/2164msec); 0 zone resets clat (msec): min=615, max=689, avg=652.46, stdev=52.67 lat (msec): min=616, max=690, avg=653.40, stdev=52.24 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 693], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 6907, max= 6907, per=46.33%, avg=6907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.09%, sys=5.36%, ctx=57, 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=178610: Sat Aug 22 06:42:06 2026 write: IOPS=1, BW=5591KiB/s (5725kB/s)(12.0MiB/2198msec); 0 zone resets clat (msec): min=558, max=1010, avg=715.94, stdev=255.48 lat (msec): min=559, max=1011, avg=716.64, stdev=255.31 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 5936, max= 6907, per=43.07%, avg=6421.50, stdev=686.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.78%, ctx=49, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178611: Sat Aug 22 06:42:06 2026 write: IOPS=2, BW=8208KiB/s (8405kB/s)(12.0MiB/1497msec); 0 zone resets clat (msec): min=374, max=598, avg=474.75, stdev=113.50 lat (msec): min=376, max=598, avg=475.56, stdev=112.82 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 7656, max= 7713, per=51.55%, avg=7684.50, stdev=40.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=3.88%, ctx=34, 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=7571KiB/s (7753kB/s), 1893KiB/s-10.6MiB/s (1938kB/s-11.1MB/s), io=16.0MiB (16.8MB), run=1136-2164msec WRITE: bw=14.6MiB/s (15.3MB/s), 3786KiB/s-8208KiB/s (3876kB/s-8405kB/s), io=32.0MiB (33.6MB), run=1497-2198msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178613: Sat Aug 22 06:42:10 2026 read: IOPS=0, BW=3336KiB/s (3416kB/s)(12.0MiB/3683msec) clat (msec): min=988, max=1550, avg=1227.07, stdev=290.55 lat (msec): min=988, max=1550, avg=1227.07, stdev=290.55 clat percentiles (msec): | 1.00th=[ 986], 5.00th=[ 986], 10.00th=[ 986], 20.00th=[ 986], | 30.00th=[ 986], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8110, max= 8192, per=100.00%, avg=8151.00, stdev=57.98, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=7.33%, ctx=192, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178614: Sat Aug 22 06:42:10 2026 read: IOPS=0, BW=957KiB/s (980kB/s)(4096KiB/4280msec) clat (nsec): min=935480k, max=935480k, avg=935480498.00, stdev= 0.00 lat (nsec): min=935483k, max=935483k, avg=935482818.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1914KiB/s (1960kB/s)(8192KiB/4280msec); 0 zone resets clat (msec): min=862, max=2478, avg=1670.94, stdev=1142.60 lat (msec): min=863, max=2479, avg=1671.40, stdev=1142.61 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 2467], | 70.00th=[ 2467], 80.00th=[ 2467], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 7892, max= 7892, per=100.00%, avg=7892.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.07%, sys=3.04%, ctx=155, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178615: Sat Aug 22 06:42:10 2026 write: IOPS=0, BW=2821KiB/s (2889kB/s)(12.0MiB/4356msec); 0 zone resets clat (msec): min=475, max=2252, avg=1450.79, stdev=901.14 lat (msec): min=475, max=2253, avg=1451.57, stdev=901.69 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 1620], 50.00th=[ 1620], 60.00th=[ 1620], | 70.00th=[ 2265], 80.00th=[ 2265], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 7892, max= 8110, per=100.00%, avg=8001.00, stdev=154.15, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.21%, sys=3.51%, ctx=61, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178616: Sat Aug 22 06:42:10 2026 write: IOPS=0, BW=3422KiB/s (3504kB/s)(12.0MiB/3591msec); 0 zone resets clat (msec): min=836, max=1493, avg=1195.98, stdev=332.81 lat (msec): min=837, max=1494, avg=1196.45, stdev=332.80 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 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= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, 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=3.65%, ctx=44, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3828KiB/s (3920kB/s), 957KiB/s-3336KiB/s (980kB/s-3416kB/s), io=16.0MiB (16.8MB), run=3683-4280msec WRITE: bw=7522KiB/s (7703kB/s), 1914KiB/s-3422KiB/s (1960kB/s-3504kB/s), io=32.0MiB (33.6MB), run=3591-4356msec