== sanity test 398b: DIO and buffer IO race ============== 05:21:41 (1787390501) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.03759 s, 8.3 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179565: Sat Aug 22 05:24:01 2026 read: IOPS=12, BW=50.3KiB/s (51.5kB/s)(5992KiB/119167msec) clat (usec): min=43, max=252081, avg=44001.83, stdev=28396.61 lat (usec): min=44, max=252082, avg=44004.05, stdev=28396.49 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11994], 10.00th=[ 17171], 20.00th=[ 22676], | 30.00th=[ 27919], 40.00th=[ 32637], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 51643], 80.00th=[ 61080], 90.00th=[ 77071], 95.00th=[ 94897], | 99.00th=[152044], 99.50th=[177210], 99.90th=[200279], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 7, max= 119, per=24.85%, avg=49.94, stdev=19.28, samples=234 iops : min= 1, max= 29, avg=11.84, stdev= 4.84, samples=234 write: IOPS=13, BW=52.8KiB/s (54.1kB/s)(6296KiB/119167msec); 0 zone resets clat (usec): min=1050, max=909699, avg=33685.44, stdev=38846.33 lat (usec): min=1051, max=909701, avg=33688.38, stdev=38846.93 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1418], 10.00th=[ 2114], 20.00th=[ 4948], | 30.00th=[ 9503], 40.00th=[ 17695], 50.00th=[ 25035], 60.00th=[ 32375], | 70.00th=[ 42206], 80.00th=[ 56886], 90.00th=[ 78119], 95.00th=[ 95945], | 99.00th=[137364], 99.50th=[164627], 99.90th=[202376], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 7, max= 126, per=25.08%, avg=52.68, stdev=20.97, samples=233 iops : min= 1, max= 31, avg=12.52, stdev= 5.28, samples=233 lat (usec) : 50=0.16%, 100=1.30%, 250=0.16%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.75%, 4=4.33%, 10=7.03%, 20=11.46%, 50=42.77% lat (msec) : 100=23.57%, 250=4.26%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.79%, ctx=6878, 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=179566: Sat Aug 22 05:24:01 2026 read: IOPS=12, BW=51.0KiB/s (52.3kB/s)(5940KiB/116356msec) clat (usec): min=41, max=878760, avg=44086.79, stdev=35544.31 lat (usec): min=41, max=878762, avg=44088.77, stdev=35544.16 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 12387], 10.00th=[ 17171], 20.00th=[ 22414], | 30.00th=[ 27132], 40.00th=[ 32637], 50.00th=[ 37487], 60.00th=[ 44303], | 70.00th=[ 51643], 80.00th=[ 60556], 90.00th=[ 76022], 95.00th=[ 93848], | 99.00th=[149947], 99.50th=[170918], 99.90th=[278922], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 7, max= 120, per=25.31%, avg=50.87, stdev=20.54, samples=228 iops : min= 1, max= 30, avg=12.08, stdev= 5.17, samples=228 write: IOPS=13, BW=54.6KiB/s (55.9kB/s)(6348KiB/116356msec); 0 zone resets clat (usec): min=938, max=306278, avg=31844.96, stdev=33247.30 lat (usec): min=939, max=306279, avg=31848.19, stdev=33247.63 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1434], 10.00th=[ 2089], 20.00th=[ 4228], | 30.00th=[ 6980], 40.00th=[ 13698], 50.00th=[ 23725], 60.00th=[ 31327], | 70.00th=[ 40109], 80.00th=[ 55313], 90.00th=[ 76022], 95.00th=[ 94897], | 99.00th=[135267], 99.50th=[158335], 99.90th=[304088], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 135, per=25.92%, avg=54.43, stdev=23.96, samples=228 iops : min= 1, max= 33, avg=12.96, stdev= 6.02, samples=228 lat (usec) : 50=0.13%, 100=1.04%, 250=0.13%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=4.72%, 4=5.01%, 10=8.85%, 20=11.17%, 50=41.50% lat (msec) : 100=23.34%, 250=3.71%, 500=0.16%, 1000=0.03% cpu : usr=0.09%, sys=5.84%, ctx=6801, 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=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=179567: Sat Aug 22 05:24:01 2026 read: IOPS=12, BW=50.9KiB/s (52.2kB/s)(6028KiB/118355msec) clat (usec): min=37, max=385353, avg=43145.43, stdev=28775.51 lat (usec): min=37, max=385354, avg=43148.08, stdev=28776.83 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11076], 10.00th=[ 16909], 20.00th=[ 22938], | 30.00th=[ 27657], 40.00th=[ 32113], 50.00th=[ 36963], 60.00th=[ 43254], | 70.00th=[ 50594], 80.00th=[ 59507], 90.00th=[ 76022], 95.00th=[ 91751], | 99.00th=[143655], 99.50th=[175113], 99.90th=[283116], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 7, max= 111, per=25.27%, avg=50.79, stdev=19.70, samples=232 iops : min= 1, max= 27, avg=12.05, stdev= 4.94, samples=232 write: IOPS=13, BW=52.9KiB/s (54.2kB/s)(6260KiB/118355msec); 0 zone resets clat (usec): min=1141, max=927512, avg=33892.02, stdev=40074.90 lat (usec): min=1143, max=927515, avg=33897.95, stdev=40072.92 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1483], 10.00th=[ 2278], 20.00th=[ 4621], | 30.00th=[ 8455], 40.00th=[ 15795], 50.00th=[ 23987], 60.00th=[ 31851], | 70.00th=[ 43254], 80.00th=[ 57934], 90.00th=[ 79168], 95.00th=[102237], | 99.00th=[139461], 99.50th=[164627], 99.90th=[219153], 99.95th=[926942], | 99.99th=[926942] bw ( KiB/s): min= 7, max= 119, per=25.13%, avg=52.78, stdev=22.14, samples=232 iops : min= 1, max= 29, avg=12.56, stdev= 5.55, samples=232 lat (usec) : 50=0.16%, 100=1.40%, 250=0.20%, 750=0.03% lat (msec) : 2=4.36%, 4=4.62%, 10=8.33%, 20=11.10%, 50=41.70% lat (msec) : 100=23.57%, 250=4.43%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=5.69%, ctx=6688, 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=179568: Sat Aug 22 05:24:01 2026 read: IOPS=12, BW=50.9KiB/s (52.1kB/s)(6052KiB/118982msec) clat (usec): min=37, max=202068, avg=42215.96, stdev=27192.73 lat (usec): min=37, max=202069, avg=42217.67, stdev=27192.64 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 8455], 10.00th=[ 16057], 20.00th=[ 21890], | 30.00th=[ 27132], 40.00th=[ 31851], 50.00th=[ 36963], 60.00th=[ 42730], | 70.00th=[ 50070], 80.00th=[ 58983], 90.00th=[ 72877], 95.00th=[ 89654], | 99.00th=[141558], 99.50th=[173016], 99.90th=[198181], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 7, max= 111, per=25.33%, avg=50.91, stdev=19.69, samples=232 iops : min= 1, max= 27, avg=12.08, stdev= 4.95, samples=232 write: IOPS=13, BW=52.4KiB/s (53.7kB/s)(6236KiB/118982msec); 0 zone resets clat (usec): min=1120, max=900083, avg=35123.17, stdev=41270.80 lat (usec): min=1122, max=900087, avg=35128.02, stdev=41271.12 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1434], 10.00th=[ 2147], 20.00th=[ 4113], | 30.00th=[ 7635], 40.00th=[ 15401], 50.00th=[ 25035], 60.00th=[ 33817], | 70.00th=[ 45876], 80.00th=[ 60556], 90.00th=[ 83362], 95.00th=[100140], | 99.00th=[152044], 99.50th=[173016], 99.90th=[267387], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 7, max= 125, per=24.80%, avg=52.09, stdev=22.33, samples=233 iops : min= 1, max= 31, avg=12.37, stdev= 5.61, samples=233 lat (usec) : 50=0.20%, 100=1.63%, 250=0.20%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.59%, 4=5.24%, 10=7.94%, 20=10.71%, 50=40.79% lat (msec) : 100=24.15%, 250=4.39%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.80%, ctx=6894, 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=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=201KiB/s (206kB/s), 50.3KiB/s-51.0KiB/s (51.5kB/s-52.3kB/s), io=23.4MiB (24.6MB), run=116356-119167msec WRITE: bw=211KiB/s (216kB/s), 52.4KiB/s-54.6KiB/s (53.7kB/s-55.9kB/s), io=24.6MiB (25.7MB), run=116356-119167msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179560: Sat Aug 22 05:24:44 2026 read: IOPS=9, BW=36.0KiB/s (37.9kB/s)(5992KiB/162091msec) clat (msec): min=5, max=921, avg=42.51, stdev=41.63 lat (msec): min=5, max=921, avg=42.51, stdev=41.63 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 61], 90.00th=[ 89], 95.00th=[ 114], | 99.00th=[ 182], 99.50th=[ 207], 99.90th=[ 347], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 112, per=25.41%, avg=37.35, stdev=23.43, samples=312 iops : min= 1, max= 28, avg= 8.71, stdev= 5.90, samples=312 write: IOPS=9, BW=38.8KiB/s (39.8kB/s)(6296KiB/162091msec); 0 zone resets clat (msec): min=12, max=486, avg=62.30, stdev=43.05 lat (msec): min=12, max=486, avg=62.31, stdev=43.04 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 72], 80.00th=[ 87], 90.00th=[ 115], 95.00th=[ 140], | 99.00th=[ 243], 99.50th=[ 279], 99.90th=[ 380], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 7, max= 111, per=24.99%, avg=38.48, stdev=21.30, samples=318 iops : min= 1, max= 27, avg= 8.98, stdev= 5.36, samples=318 lat (msec) : 10=1.40%, 20=12.60%, 50=48.08%, 100=26.89%, 250=10.51% lat (msec) : 500=0.49%, 1000=0.03% cpu : usr=0.05%, sys=2.28%, ctx=5009, 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=179561: Sat Aug 22 05:24:44 2026 read: IOPS=9, BW=36.7KiB/s (37.6kB/s)(5940KiB/161735msec) clat (msec): min=6, max=975, avg=43.34, stdev=45.36 lat (msec): min=6, max=975, avg=43.35, stdev=45.36 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 63], 90.00th=[ 92], 95.00th=[ 123], | 99.00th=[ 197], 99.50th=[ 224], 99.90th=[ 376], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 126, per=25.42%, avg=37.36, stdev=24.07, samples=310 iops : min= 1, max= 31, avg= 8.71, stdev= 6.05, samples=310 write: IOPS=9, BW=39.2KiB/s (40.2kB/s)(6348KiB/161735msec); 0 zone resets clat (msec): min=11, max=380, avg=61.10, stdev=41.50 lat (msec): min=11, max=380, avg=61.11, stdev=41.52 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 71], 80.00th=[ 88], 90.00th=[ 117], 95.00th=[ 142], | 99.00th=[ 201], 99.50th=[ 253], 99.90th=[ 326], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 7, max= 118, per=25.48%, avg=39.25, stdev=22.96, samples=316 iops : min= 1, max= 29, avg= 9.17, stdev= 5.79, samples=316 lat (msec) : 10=1.50%, 20=14.00%, 50=47.20%, 100=25.39%, 250=11.46% lat (msec) : 500=0.42%, 1000=0.03% cpu : usr=0.06%, sys=2.30%, ctx=5102, 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=179562: Sat Aug 22 05:24:44 2026 read: IOPS=9, BW=37.4KiB/s (38.3kB/s)(6028KiB/161114msec) clat (msec): min=6, max=399, avg=42.04, stdev=36.07 lat (msec): min=6, max=399, avg=42.04, stdev=36.07 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 92], 95.00th=[ 117], | 99.00th=[ 167], 99.50th=[ 182], 99.90th=[ 372], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 7, max= 143, per=25.60%, avg=37.64, stdev=23.31, samples=311 iops : min= 1, max= 35, avg= 8.77, stdev= 5.88, samples=311 write: IOPS=9, BW=38.9KiB/s (39.8kB/s)(6260KiB/161114msec); 0 zone resets clat (msec): min=11, max=995, avg=62.25, stdev=48.16 lat (msec): min=11, max=995, avg=62.25, stdev=48.16 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 72], 80.00th=[ 89], 90.00th=[ 114], 95.00th=[ 140], | 99.00th=[ 222], 99.50th=[ 271], 99.90th=[ 384], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 119, per=25.13%, avg=38.70, stdev=22.77, samples=314 iops : min= 1, max= 29, avg= 9.04, stdev= 5.73, samples=314 lat (msec) : 10=1.56%, 20=13.64%, 50=47.07%, 100=26.04%, 250=11.23% lat (msec) : 500=0.42%, 1000=0.03% cpu : usr=0.05%, sys=2.31%, ctx=4999, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179563: Sat Aug 22 05:24:44 2026 read: IOPS=9, BW=37.3KiB/s (38.2kB/s)(6052KiB/162330msec) clat (msec): min=5, max=356, avg=42.38, stdev=36.17 lat (msec): min=5, max=356, avg=42.38, stdev=36.17 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 64], 90.00th=[ 92], 95.00th=[ 122], | 99.00th=[ 167], 99.50th=[ 188], 99.90th=[ 239], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 143, per=26.07%, avg=38.32, stdev=24.73, samples=308 iops : min= 1, max= 35, avg= 8.94, stdev= 6.22, samples=308 write: IOPS=9, BW=38.4KiB/s (39.3kB/s)(6236KiB/162330msec); 0 zone resets clat (msec): min=13, max=1012, avg=62.78, stdev=49.60 lat (msec): min=13, max=1012, avg=62.79, stdev=49.60 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 48], 60.00th=[ 58], | 70.00th=[ 71], 80.00th=[ 90], 90.00th=[ 117], 95.00th=[ 144], | 99.00th=[ 228], 99.50th=[ 268], 99.90th=[ 477], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 111, per=24.94%, avg=38.40, stdev=21.99, samples=316 iops : min= 1, max= 27, avg= 8.97, stdev= 5.54, samples=316 lat (msec) : 10=1.76%, 20=13.96%, 50=47.23%, 100=24.87%, 250=11.82% lat (msec) : 500=0.33%, 2000=0.03% cpu : usr=0.06%, sys=2.25%, ctx=4973, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=148KiB/s (151kB/s), 36.7KiB/s-37.4KiB/s (37.6kB/s-38.3kB/s), io=23.4MiB (24.6MB), run=161114-162330msec WRITE: bw=155KiB/s (159kB/s), 38.4KiB/s-39.2KiB/s (39.3kB/s-40.2kB/s), io=24.6MiB (25.7MB), run=161114-162330msec 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=179612: Sat Aug 22 05:25:23 2026 read: IOPS=12, BW=204KiB/s (209kB/s)(5920KiB/28967msec) clat (usec): min=47, max=158584, avg=40322.99, stdev=25751.33 lat (usec): min=48, max=158585, avg=40324.40, stdev=25751.02 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 69], 10.00th=[ 6194], 20.00th=[ 20579], | 30.00th=[ 26608], 40.00th=[ 31327], 50.00th=[ 36439], 60.00th=[ 42730], | 70.00th=[ 50070], 80.00th=[ 58459], 90.00th=[ 70779], 95.00th=[ 87557], | 99.00th=[123208], 99.50th=[143655], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 90, max= 414, per=24.58%, avg=203.04, stdev=72.96, samples=57 iops : min= 5, max= 25, avg=11.89, stdev= 4.59, samples=57 write: IOPS=13, BW=220KiB/s (225kB/s)(6368KiB/28967msec); 0 zone resets clat (usec): min=1644, max=186988, avg=34440.36, stdev=33909.40 lat (usec): min=1647, max=186990, avg=34458.90, stdev=33927.64 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2343], 10.00th=[ 3654], 20.00th=[ 6521], | 30.00th=[ 9372], 40.00th=[ 16319], 50.00th=[ 24511], 60.00th=[ 31851], | 70.00th=[ 43779], 80.00th=[ 63701], 90.00th=[ 78119], 95.00th=[101188], | 99.00th=[162530], 99.50th=[177210], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 30, max= 442, per=25.22%, avg=219.18, stdev=81.16, samples=57 iops : min= 1, max= 27, avg=12.91, stdev= 5.14, samples=57 lat (usec) : 50=0.39%, 100=3.12%, 250=0.65%, 500=0.26% lat (msec) : 2=1.82%, 4=4.56%, 10=10.16%, 20=10.68%, 50=39.84% lat (msec) : 100=24.61%, 250=3.91% cpu : usr=0.07%, sys=6.39%, ctx=1789, 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=179613: Sat Aug 22 05:25:23 2026 read: IOPS=12, BW=199KiB/s (204kB/s)(5744KiB/28844msec) clat (usec): min=43, max=235965, avg=44741.82, stdev=31338.18 lat (usec): min=43, max=235967, avg=44755.92, stdev=31332.80 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 63], 10.00th=[ 14484], 20.00th=[ 24249], | 30.00th=[ 29492], 40.00th=[ 34341], 50.00th=[ 39060], 60.00th=[ 45351], | 70.00th=[ 50594], 80.00th=[ 63177], 90.00th=[ 79168], 95.00th=[ 96994], | 99.00th=[162530], 99.50th=[219153], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 30, max= 478, per=24.12%, avg=199.21, stdev=77.65, samples=57 iops : min= 1, max= 29, avg=11.65, stdev= 4.90, samples=57 write: IOPS=14, BW=227KiB/s (232kB/s)(6544KiB/28844msec); 0 zone resets clat (usec): min=1646, max=197679, avg=30515.96, stdev=30568.43 lat (usec): min=1649, max=197681, avg=30518.36, stdev=30568.40 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2474], 10.00th=[ 3163], 20.00th=[ 6259], | 30.00th=[ 8979], 40.00th=[ 15139], 50.00th=[ 21890], 60.00th=[ 27657], | 70.00th=[ 37487], 80.00th=[ 52167], 90.00th=[ 72877], 95.00th=[ 89654], | 99.00th=[127402], 99.50th=[170918], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 30, max= 570, per=26.07%, avg=226.56, stdev=105.60, samples=57 iops : min= 1, max= 35, avg=13.37, stdev= 6.61, samples=57 lat (usec) : 50=0.65%, 100=2.73%, 250=0.52% lat (msec) : 2=1.43%, 4=5.08%, 10=10.29%, 20=11.07%, 50=42.19% lat (msec) : 100=22.27%, 250=3.78% cpu : usr=0.07%, sys=6.87%, ctx=1823, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179615: Sat Aug 22 05:25:23 2026 read: IOPS=13, BW=218KiB/s (224kB/s)(6256KiB/28655msec) clat (usec): min=42, max=282698, avg=40807.42, stdev=30878.41 lat (usec): min=42, max=282699, avg=40813.82, stdev=30871.76 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 100], 20.00th=[ 22414], | 30.00th=[ 27132], 40.00th=[ 32900], 50.00th=[ 37487], 60.00th=[ 42730], | 70.00th=[ 47973], 80.00th=[ 55837], 90.00th=[ 69731], 95.00th=[ 83362], | 99.00th=[164627], 99.50th=[238027], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 94, max= 414, per=26.38%, avg=217.93, stdev=76.92, samples=56 iops : min= 5, max= 25, avg=12.84, stdev= 4.89, samples=56 write: IOPS=13, BW=211KiB/s (216kB/s)(6032KiB/28655msec); 0 zone resets clat (usec): min=1691, max=163866, avg=33283.14, stdev=30880.25 lat (usec): min=1691, max=163868, avg=33286.16, stdev=30881.41 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2540], 10.00th=[ 4228], 20.00th=[ 6915], | 30.00th=[ 11076], 40.00th=[ 17957], 50.00th=[ 25035], 60.00th=[ 31327], | 70.00th=[ 41157], 80.00th=[ 57410], 90.00th=[ 77071], 95.00th=[ 92799], | 99.00th=[145753], 99.50th=[162530], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 31, max= 443, per=23.83%, avg=207.07, stdev=86.90, samples=56 iops : min= 1, max= 27, avg=12.16, stdev= 5.43, samples=56 lat (usec) : 50=0.26%, 100=4.95%, 250=0.26%, 500=0.13%, 750=0.26% lat (msec) : 2=1.56%, 4=3.26%, 10=9.11%, 20=9.11%, 50=45.96% lat (msec) : 100=22.14%, 250=2.86%, 500=0.13% cpu : usr=0.06%, sys=6.82%, ctx=1743, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179617: Sat Aug 22 05:25:23 2026 read: IOPS=13, BW=213KiB/s (218kB/s)(6032KiB/28358msec) clat (usec): min=43, max=230016, avg=39941.49, stdev=29901.96 lat (usec): min=43, max=230017, avg=39942.66, stdev=29901.96 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 61], 10.00th=[ 82], 20.00th=[ 21365], | 30.00th=[ 25560], 40.00th=[ 31327], 50.00th=[ 35390], 60.00th=[ 41157], | 70.00th=[ 47973], 80.00th=[ 56886], 90.00th=[ 74974], 95.00th=[ 85459], | 99.00th=[173016], 99.50th=[225444], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 30, max= 413, per=25.72%, avg=212.45, stdev=78.55, samples=56 iops : min= 1, max= 25, avg=12.48, stdev= 4.96, samples=56 write: IOPS=13, BW=221KiB/s (226kB/s)(6256KiB/28358msec); 0 zone resets clat (usec): min=1700, max=161248, avg=33126.76, stdev=30374.73 lat (usec): min=1702, max=161250, avg=33130.43, stdev=30373.19 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2606], 10.00th=[ 3654], 20.00th=[ 5932], | 30.00th=[ 10028], 40.00th=[ 17695], 50.00th=[ 23987], 60.00th=[ 31851], | 70.00th=[ 44303], 80.00th=[ 58459], 90.00th=[ 74974], 95.00th=[ 96994], | 99.00th=[126354], 99.50th=[147850], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 31, max= 504, per=25.42%, avg=220.91, stdev=100.07, samples=56 iops : min= 1, max= 31, avg=13.02, stdev= 6.32, samples=56 lat (usec) : 50=0.26%, 100=5.47%, 250=0.26% lat (msec) : 2=1.43%, 4=4.56%, 10=9.38%, 20=9.51%, 50=42.45% lat (msec) : 100=23.57%, 250=3.12% cpu : usr=0.05%, sys=6.66%, ctx=1721, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=827KiB/s (847kB/s), 199KiB/s-218KiB/s (204kB/s-224kB/s), io=23.4MiB (24.5MB), run=28358-28967msec WRITE: bw=870KiB/s (891kB/s), 211KiB/s-227KiB/s (216kB/s-232kB/s), io=24.6MiB (25.8MB), run=28358-28967msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179614: Sat Aug 22 05:25:33 2026 read: IOPS=9, BW=153KiB/s (157kB/s)(5920KiB/38722msec) clat (msec): min=6, max=226, avg=39.90, stdev=34.55 lat (msec): min=6, max=226, avg=39.90, stdev=34.55 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 55], 90.00th=[ 93], 95.00th=[ 122], | 99.00th=[ 157], 99.50th=[ 205], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 31, max= 448, per=24.12%, avg=149.07, stdev=91.43, samples=76 iops : min= 1, max= 28, avg= 8.53, stdev= 5.81, samples=76 write: IOPS=10, BW=164KiB/s (168kB/s)(6368KiB/38722msec); 0 zone resets clat (msec): min=13, max=291, avg=59.46, stdev=41.78 lat (msec): min=13, max=291, avg=59.46, stdev=41.79 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 39], 50.00th=[ 43], 60.00th=[ 54], | 70.00th=[ 68], 80.00th=[ 90], 90.00th=[ 122], 95.00th=[ 142], | 99.00th=[ 201], 99.50th=[ 284], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 415, per=25.54%, avg=166.04, stdev=97.72, samples=74 iops : min= 1, max= 25, avg= 9.58, stdev= 6.17, samples=74 lat (msec) : 10=1.69%, 20=17.19%, 50=47.79%, 100=20.44%, 250=12.63% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=2.32%, ctx=1300, 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=179616: Sat Aug 22 05:25:33 2026 read: IOPS=9, BW=150KiB/s (154kB/s)(5744KiB/38244msec) clat (msec): min=7, max=199, avg=39.19, stdev=33.52 lat (msec): min=7, max=199, avg=39.19, stdev=33.52 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 89], 95.00th=[ 112], | 99.00th=[ 161], 99.50th=[ 171], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 31, max= 480, per=24.36%, avg=150.54, stdev=99.13, samples=74 iops : min= 1, max= 30, avg= 8.62, stdev= 6.28, samples=74 write: IOPS=10, BW=171KiB/s (175kB/s)(6544KiB/38244msec); 0 zone resets clat (msec): min=15, max=266, avg=58.98, stdev=37.41 lat (msec): min=15, max=266, avg=58.98, stdev=37.41 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 89], 90.00th=[ 113], 95.00th=[ 132], | 99.00th=[ 174], 99.50th=[ 184], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 31, max= 448, per=26.05%, avg=169.31, stdev=97.76, samples=75 iops : min= 1, max= 28, avg= 9.80, stdev= 6.16, samples=75 lat (msec) : 10=1.43%, 20=14.45%, 50=48.05%, 100=24.74%, 250=11.20% lat (msec) : 500=0.13% cpu : usr=0.04%, sys=2.55%, ctx=1194, 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=179618: Sat Aug 22 05:25:33 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(6256KiB/38294msec) clat (msec): min=7, max=186, avg=38.77, stdev=32.26 lat (msec): min=7, max=186, avg=38.77, stdev=32.26 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 55], 90.00th=[ 80], 95.00th=[ 115], | 99.00th=[ 171], 99.50th=[ 184], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 31, max= 479, per=26.74%, avg=165.24, stdev=110.68, samples=74 iops : min= 1, max= 29, avg= 9.54, stdev= 6.99, samples=74 write: IOPS=9, BW=158KiB/s (161kB/s)(6032KiB/38294msec); 0 zone resets clat (msec): min=12, max=287, avg=60.82, stdev=39.63 lat (msec): min=12, max=287, avg=60.82, stdev=39.63 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 40], 50.00th=[ 46], 60.00th=[ 61], | 70.00th=[ 73], 80.00th=[ 88], 90.00th=[ 110], 95.00th=[ 136], | 99.00th=[ 197], 99.50th=[ 271], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 31, max= 416, per=23.83%, avg=154.92, stdev=82.87, samples=75 iops : min= 1, max= 26, avg= 8.89, stdev= 5.24, samples=75 lat (msec) : 10=0.91%, 20=15.89%, 50=47.79%, 100=25.65%, 250=9.38% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=2.52%, ctx=1270, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179619: Sat Aug 22 05:25:33 2026 read: IOPS=9, BW=156KiB/s (160kB/s)(6032KiB/38572msec) clat (msec): min=6, max=209, avg=39.88, stdev=33.50 lat (msec): min=6, max=209, avg=39.88, stdev=33.50 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 44], 80.00th=[ 61], 90.00th=[ 87], 95.00th=[ 113], | 99.00th=[ 167], 99.50th=[ 209], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 31, max= 480, per=25.63%, avg=158.36, stdev=98.39, samples=74 iops : min= 1, max= 30, avg= 9.11, stdev= 6.21, samples=74 write: IOPS=10, BW=162KiB/s (166kB/s)(6256KiB/38572msec); 0 zone resets clat (msec): min=16, max=284, avg=59.35, stdev=42.97 lat (msec): min=16, max=284, avg=59.35, stdev=42.97 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 31], 40.00th=[ 37], 50.00th=[ 43], 60.00th=[ 53], | 70.00th=[ 68], 80.00th=[ 88], 90.00th=[ 121], 95.00th=[ 150], | 99.00th=[ 199], 99.50th=[ 271], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 413, per=24.74%, avg=160.79, stdev=100.49, samples=76 iops : min= 1, max= 25, avg= 9.26, stdev= 6.35, samples=76 lat (msec) : 10=1.56%, 20=16.15%, 50=47.79%, 100=23.31%, 250=10.94% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=2.38%, ctx=1244, 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=619KiB/s (633kB/s), 150KiB/s-163KiB/s (154kB/s-167kB/s), io=23.4MiB (24.5MB), run=38244-38722msec WRITE: bw=651KiB/s (666kB/s), 158KiB/s-171KiB/s (161kB/s-175kB/s), io=24.6MiB (25.8MB), run=38244-38722msec 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=179635: Sat Aug 22 05:25:47 2026 read: IOPS=1, BW=1792KiB/s (1835kB/s)(7168KiB/3999msec) clat (usec): min=486, max=367790, avg=204738.92, stdev=120786.14 lat (usec): min=487, max=367791, avg=204740.44, stdev=120786.11 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[162530], | 30.00th=[177210], 40.00th=[177210], 50.00th=[181404], 60.00th=[212861], | 70.00th=[212861], 80.00th=[333448], 90.00th=[367002], 95.00th=[367002], | 99.00th=[367002], 99.50th=[367002], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 1935, max= 3900, per=59.43%, avg=2635.50, stdev=905.89, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1280KiB/s (1311kB/s)(5120KiB/3999msec); 0 zone resets clat (msec): min=206, max=1170, avg=458.90, stdev=402.88 lat (msec): min=206, max=1170, avg=458.98, stdev=402.87 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 1935, max= 4079, per=43.16%, avg=2680.33, stdev=1212.15, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=50.00%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=17.48%, ctx=359, 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=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=179636: Sat Aug 22 05:25:47 2026 read: IOPS=0, BW=444KiB/s (454kB/s)(2048KiB/4617msec) clat (msec): min=266, max=322, avg=294.36, stdev=39.39 lat (msec): min=266, max=322, avg=294.36, stdev=39.39 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 321], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 1363, max= 2031, per=38.26%, avg=1697.00, stdev=472.35, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2218KiB/s (2271kB/s)(10.0MiB/4617msec); 0 zone resets clat (msec): min=168, max=614, avg=382.16, stdev=156.12 lat (msec): min=168, max=614, avg=382.37, stdev=156.27 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 211], | 30.00th=[ 257], 40.00th=[ 288], 50.00th=[ 334], 60.00th=[ 426], | 70.00th=[ 447], 80.00th=[ 464], 90.00th=[ 609], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 1935, max= 4079, per=36.87%, avg=2289.43, stdev=790.26, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=16.67%, 500=66.67%, 750=16.67% cpu : usr=0.06%, sys=17.35%, ctx=158, 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=179637: Sat Aug 22 05:25:47 2026 read: IOPS=1, BW=1457KiB/s (1492kB/s)(6144KiB/4216msec) clat (usec): min=601, max=248111, avg=125869.72, stdev=102989.29 lat (usec): min=602, max=248112, avg=125870.80, stdev=102989.52 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 603], 10.00th=[ 603], 20.00th=[ 1811], | 30.00th=[ 1811], 40.00th=[135267], 50.00th=[135267], 60.00th=[183501], | 70.00th=[185598], 80.00th=[185598], 90.00th=[248513], 95.00th=[248513], | 99.00th=[248513], 99.50th=[248513], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 2039, max= 4079, per=75.08%, avg=3329.67, stdev=1122.58, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1457KiB/s (1492kB/s)(6144KiB/4216msec); 0 zone resets clat (msec): min=236, max=1161, avg=569.77, stdev=376.77 lat (msec): min=236, max=1161, avg=570.01, stdev=376.83 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 514], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 1331, max= 4079, per=38.15%, avg=2369.00, stdev=1187.07, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=41.67%, 500=16.67%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=14.66%, ctx=215, 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=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=179638: Sat Aug 22 05:25:47 2026 read: IOPS=1, BW=1234KiB/s (1264kB/s)(5120KiB/4149msec) clat (usec): min=1438, max=288654, avg=95562.77, stdev=133462.74 lat (usec): min=1440, max=288655, avg=95563.86, stdev=133462.45 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1434], 10.00th=[ 1434], 20.00th=[ 1434], | 30.00th=[ 1909], 40.00th=[ 1909], 50.00th=[ 2573], 60.00th=[ 2573], | 70.00th=[183501], 80.00th=[183501], 90.00th=[287310], 95.00th=[287310], | 99.00th=[287310], 99.50th=[287310], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 2031, max= 6119, per=91.88%, avg=4075.00, stdev=2890.65, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1728KiB/s (1769kB/s)(7168KiB/4149msec); 0 zone resets clat (msec): min=161, max=1339, avg=501.74, stdev=406.60 lat (msec): min=161, max=1339, avg=501.87, stdev=406.57 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 165], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 372], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 600], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 1935, max= 2039, per=32.43%, avg=2014.20, stdev=44.58, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 2=16.67%, 4=8.33%, 250=25.00%, 500=25.00%, 750=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=14.37%, ctx=134, 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=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=4436KiB/s (4542kB/s), 444KiB/s-1792KiB/s (454kB/s-1835kB/s), io=20.0MiB (20.0MB), run=3999-4617msec WRITE: bw=6210KiB/s (6359kB/s), 1280KiB/s-2218KiB/s (1311kB/s-2271kB/s), io=28.0MiB (29.4MB), run=3999-4617msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179631: Sat Aug 22 05:25:48 2026 read: IOPS=1, BW=1960KiB/s (2007kB/s)(7168KiB/3658msec) clat (msec): min=82, max=586, avg=211.79, stdev=178.76 lat (msec): min=82, max=586, avg=211.79, stdev=178.76 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 86], | 30.00th=[ 102], 40.00th=[ 102], 50.00th=[ 146], 60.00th=[ 236], | 70.00th=[ 236], 80.00th=[ 245], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 2043, max= 4190, per=89.19%, avg=3434.67, stdev=1206.69, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1400KiB/s (1433kB/s)(5120KiB/3658msec); 0 zone resets clat (msec): min=179, max=635, avg=401.15, stdev=194.09 lat (msec): min=179, max=635, avg=401.33, stdev=194.25 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 259], 40.00th=[ 259], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 558], 80.00th=[ 558], 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= 1946, max= 4079, per=49.84%, avg=2686.67, stdev=1206.62, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=41.67%, 500=16.67%, 750=25.00% cpu : usr=0.00%, sys=5.11%, ctx=186, 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=179632: Sat Aug 22 05:25:48 2026 read: IOPS=0, BW=448KiB/s (458kB/s)(2048KiB/4574msec) clat (msec): min=179, max=308, avg=244.11, stdev=91.57 lat (msec): min=179, max=308, avg=244.11, stdev=91.57 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 180], 60.00th=[ 309], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 309], 95.00th=[ 309], | 99.00th=[ 309], 99.50th=[ 309], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 1976, max= 2043, per=52.18%, avg=2009.50, stdev=47.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2239KiB/s (2292kB/s)(10.0MiB/4574msec); 0 zone resets clat (msec): min=130, max=551, avg=385.12, stdev=139.34 lat (msec): min=130, max=552, avg=385.68, stdev=139.37 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 253], | 30.00th=[ 296], 40.00th=[ 317], 50.00th=[ 384], 60.00th=[ 384], | 70.00th=[ 460], 80.00th=[ 527], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1965, max= 4063, per=50.06%, avg=2698.67, stdev=1051.02, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=16.67%, 500=58.33%, 750=25.00% cpu : usr=0.04%, sys=5.62%, ctx=96, 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=179633: Sat Aug 22 05:25:48 2026 read: IOPS=1, BW=1706KiB/s (1747kB/s)(6144KiB/3602msec) clat (msec): min=123, max=383, avg=222.34, stdev=93.51 lat (msec): min=123, max=383, avg=222.34, stdev=93.51 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 194], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 1946, max= 4079, per=65.59%, avg=2525.75, stdev=1036.43, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1706KiB/s (1747kB/s)(6144KiB/3602msec); 0 zone resets clat (msec): min=121, max=642, avg=372.89, stdev=181.72 lat (msec): min=121, max=642, avg=373.04, stdev=181.74 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 376], | 70.00th=[ 493], 80.00th=[ 493], 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= 1946, max= 2748, per=40.70%, avg=2194.25, stdev=371.94, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (msec) : 250=41.67%, 500=50.00%, 750=8.33% cpu : usr=0.06%, sys=5.89%, ctx=105, 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=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=179634: Sat Aug 22 05:25:48 2026 read: IOPS=0, BW=963KiB/s (986kB/s)(5120KiB/5318msec) clat (msec): min=41, max=1206, avg=423.40, stdev=459.54 lat (msec): min=41, max=1206, avg=423.40, stdev=459.54 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 42], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 347], 60.00th=[ 347], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 2039, max= 4087, per=70.71%, avg=2723.00, stdev=1181.26, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1348KiB/s (1380kB/s)(7168KiB/5318msec); 0 zone resets clat (msec): min=109, max=1110, avg=446.15, stdev=353.58 lat (msec): min=109, max=1110, avg=446.48, stdev=353.55 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 123], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 405], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 651], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1479, max= 4079, per=42.98%, avg=2317.20, stdev=1012.04, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 50=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 2000=16.67% cpu : usr=0.04%, sys=5.55%, ctx=90, 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=3851KiB/s (3943kB/s), 448KiB/s-1960KiB/s (458kB/s-2007kB/s), io=20.0MiB (20.0MB), run=3602-5318msec WRITE: bw=5392KiB/s (5521kB/s), 1348KiB/s-2239KiB/s (1380kB/s-2292kB/s), io=28.0MiB (29.4MB), run=3602-5318msec 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=179645: Sat Aug 22 05:26:02 2026 read: IOPS=0, BW=4029KiB/s (4126kB/s)(12.0MiB/3050msec) clat (msec): min=853, max=1284, avg=1000.64, stdev=245.48 lat (msec): min=853, max=1284, avg=1000.64, stdev=245.48 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8062, max= 8143, per=100.00%, avg=8102.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.48%, 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=179648: Sat Aug 22 05:26:02 2026 read: IOPS=0, BW=1138KiB/s (1165kB/s)(4096KiB/3600msec) clat (nsec): min=2078.2M, max=2078.2M, avg=2078216140.00, stdev= 0.00 lat (nsec): min=2078.2M, max=2078.2M, avg=2078218740.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2072], 5.00th=[ 2072], 10.00th=[ 2072], 20.00th=[ 2072], | 30.00th=[ 2072], 40.00th=[ 2072], 50.00th=[ 2072], 60.00th=[ 2072], | 70.00th=[ 2072], 80.00th=[ 2072], 90.00th=[ 2072], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2276KiB/s (2330kB/s)(8192KiB/3600msec); 0 zone resets clat (msec): min=260, max=1215, avg=737.96, stdev=675.68 lat (msec): min=260, max=1216, avg=738.34, stdev=675.68 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=[ 1217], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 8143, max= 8143, per=89.46%, 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=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.14%, ctx=66, 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=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=179650: Sat Aug 22 05:26:02 2026 write: IOPS=0, BW=3445KiB/s (3528kB/s)(12.0MiB/3567msec); 0 zone resets clat (msec): min=397, max=2170, avg=1140.84, stdev=920.76 lat (msec): min=397, max=2171, avg=1141.19, stdev=920.78 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8062, max= 8062, per=88.57%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.48%, ctx=48, 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=179652: Sat Aug 22 05:26:02 2026 write: IOPS=1, BW=4739KiB/s (4853kB/s)(12.0MiB/2593msec); 0 zone resets clat (msec): min=261, max=1393, avg=849.48, stdev=567.23 lat (msec): min=261, max=1393, avg=849.82, stdev=567.26 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 262], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 894], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8031, max= 8143, per=88.85%, avg=8087.00, stdev=79.20, 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=4.67%, ctx=38, 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=4551KiB/s (4660kB/s), 1138KiB/s-4029KiB/s (1165kB/s-4126kB/s), io=16.0MiB (16.8MB), run=3050-3600msec WRITE: bw=9102KiB/s (9321kB/s), 2276KiB/s-4739KiB/s (2330kB/s-4853kB/s), io=32.0MiB (33.6MB), run=2593-3600msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179646: Sat Aug 22 05:26:02 2026 read: IOPS=1, BW=4351KiB/s (4456kB/s)(12.0MiB/2824msec) clat (msec): min=793, max=1095, avg=921.18, stdev=156.08 lat (msec): min=793, max=1095, avg=921.18, stdev=156.08 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8062, max= 8078, per=100.00%, avg=8070.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=13.18%, ctx=267, 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=179647: Sat Aug 22 05:26:02 2026 read: IOPS=0, BW=1304KiB/s (1335kB/s)(4096KiB/3141msec) clat (nsec): min=1247.0M, max=1247.0M, avg=1247032441.00, stdev= 0.00 lat (nsec): min=1247.0M, max=1247.0M, avg=1247035068.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1250], 5.00th=[ 1250], 10.00th=[ 1250], 20.00th=[ 1250], | 30.00th=[ 1250], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2608KiB/s (2671kB/s)(8192KiB/3141msec); 0 zone resets clat (msec): min=861, max=895, avg=878.65, stdev=23.96 lat (msec): min=861, max=895, avg=878.92, stdev=24.06 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=[ 894], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 8078, max= 8078, per=93.58%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.40%, ctx=236, 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=179649: Sat Aug 22 05:26:02 2026 write: IOPS=0, BW=3237KiB/s (3315kB/s)(12.0MiB/3796msec); 0 zone resets clat (msec): min=375, max=2892, avg=1243.48, stdev=1428.57 lat (msec): min=377, max=2893, avg=1244.78, stdev=1428.08 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 2903], 80.00th=[ 2903], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 8078, max= 8159, per=94.05%, avg=8118.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.53%, ctx=52, 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=179651: Sat Aug 22 05:26:02 2026 write: IOPS=0, BW=3848KiB/s (3941kB/s)(12.0MiB/3193msec); 0 zone resets clat (msec): min=685, max=1332, avg=1035.38, stdev=326.67 lat (msec): min=685, max=1332, avg=1037.26, stdev=326.88 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8078, max= 8126, per=93.86%, avg=8102.00, stdev=33.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.06%, sys=5.08%, ctx=60, 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=5216KiB/s (5341kB/s), 1304KiB/s-4351KiB/s (1335kB/s-4456kB/s), io=16.0MiB (16.8MB), run=2824-3141msec WRITE: bw=8632KiB/s (8839kB/s), 2608KiB/s-3848KiB/s (2671kB/s-3941kB/s), io=32.0MiB (33.6MB), run=3141-3796msec