== sanity test 398b: DIO and buffer IO race ============== 19:06:56 (1763338016) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.09581 s, 9.9 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=149076: Sun Nov 16 19:09:01 2025 read: IOPS=13, BW=54.8KiB/s (56.2kB/s)(5992KiB/109265msec) clat (usec): min=107, max=860169, avg=34084.97, stdev=32265.16 lat (usec): min=107, max=860170, avg=34087.98, stdev=32266.09 clat percentiles (usec): | 1.00th=[ 133], 5.00th=[ 174], 10.00th=[ 277], 20.00th=[ 15795], | 30.00th=[ 20317], 40.00th=[ 25035], 50.00th=[ 30016], 60.00th=[ 35914], | 70.00th=[ 42730], 80.00th=[ 51643], 90.00th=[ 63701], 95.00th=[ 77071], | 99.00th=[105382], 99.50th=[115868], 99.90th=[252707], 99.95th=[859833], | 99.99th=[859833] bw ( KiB/s): min= 7, max= 141, per=24.87%, avg=54.47, stdev=22.70, samples=214 iops : min= 1, max= 35, avg=13.00, stdev= 5.73, samples=214 write: IOPS=14, BW=57.6KiB/s (59.0kB/s)(6296KiB/109265msec); 0 zone resets clat (usec): min=910, max=389337, avg=36874.73, stdev=37320.02 lat (usec): min=911, max=389339, avg=36877.69, stdev=37320.71 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1434], 20.00th=[ 3785], | 30.00th=[ 8717], 40.00th=[ 18744], 50.00th=[ 28967], 60.00th=[ 38536], | 70.00th=[ 50070], 80.00th=[ 62129], 90.00th=[ 85459], 95.00th=[102237], | 99.00th=[158335], 99.50th=[189793], 99.90th=[337642], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 7, max= 143, per=24.90%, avg=57.27, stdev=21.49, samples=214 iops : min= 1, max= 35, avg=13.71, stdev= 5.41, samples=214 lat (usec) : 250=4.43%, 500=1.37%, 750=0.23%, 1000=0.16% lat (msec) : 2=7.06%, 4=3.78%, 10=5.83%, 20=12.30%, 50=38.77% lat (msec) : 100=22.75%, 250=3.19%, 500=0.10%, 1000=0.03% cpu : usr=0.10%, sys=7.31%, ctx=6588, 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=149077: Sun Nov 16 19:09:01 2025 read: IOPS=13, BW=55.7KiB/s (57.0kB/s)(5940KiB/106636msec) clat (usec): min=97, max=790015, avg=34259.76, stdev=34648.34 lat (usec): min=97, max=790017, avg=34262.57, stdev=34648.15 clat percentiles (usec): | 1.00th=[ 131], 5.00th=[ 174], 10.00th=[ 255], 20.00th=[ 15139], | 30.00th=[ 20055], 40.00th=[ 24249], 50.00th=[ 29230], 60.00th=[ 34341], | 70.00th=[ 41681], 80.00th=[ 52167], 90.00th=[ 66847], 95.00th=[ 78119], | 99.00th=[117965], 99.50th=[143655], 99.90th=[392168], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 7, max= 134, per=25.36%, avg=55.53, stdev=23.49, samples=209 iops : min= 1, max= 33, avg=13.27, stdev= 5.90, samples=209 write: IOPS=14, BW=59.5KiB/s (60.0kB/s)(6348KiB/106636msec); 0 zone resets clat (usec): min=972, max=343674, avg=34998.57, stdev=35573.91 lat (usec): min=972, max=343676, avg=35001.45, stdev=35573.85 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1172], 10.00th=[ 1418], 20.00th=[ 3752], | 30.00th=[ 8094], 40.00th=[ 17171], 50.00th=[ 26870], 60.00th=[ 35914], | 70.00th=[ 46400], 80.00th=[ 58983], 90.00th=[ 80217], 95.00th=[100140], | 99.00th=[154141], 99.50th=[181404], 99.90th=[238027], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 7, max= 128, per=25.80%, avg=59.34, stdev=22.30, samples=209 iops : min= 1, max= 32, avg=14.23, stdev= 5.66, samples=209 lat (usec) : 100=0.03%, 250=4.69%, 500=1.40%, 750=0.29%, 1000=0.23% lat (msec) : 2=7.91%, 4=3.32%, 10=6.45%, 20=12.50%, 50=38.87% lat (msec) : 100=21.06%, 250=3.09%, 500=0.13%, 1000=0.03% cpu : usr=0.11%, sys=7.33%, ctx=6450, 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=149078: Sun Nov 16 19:09:01 2025 read: IOPS=13, BW=55.6KiB/s (56.9kB/s)(6028KiB/108404msec) clat (usec): min=102, max=427696, avg=33388.13, stdev=25836.87 lat (usec): min=102, max=427697, avg=33398.39, stdev=25833.34 clat percentiles (usec): | 1.00th=[ 129], 5.00th=[ 174], 10.00th=[ 289], 20.00th=[ 16057], | 30.00th=[ 20841], 40.00th=[ 24773], 50.00th=[ 28967], 60.00th=[ 33817], | 70.00th=[ 41157], 80.00th=[ 50594], 90.00th=[ 63701], 95.00th=[ 76022], | 99.00th=[110625], 99.50th=[126354], 99.90th=[160433], 99.95th=[425722], | 99.99th=[425722] bw ( KiB/s): min= 7, max= 111, per=25.40%, avg=55.62, stdev=21.61, samples=211 iops : min= 1, max= 27, avg=13.29, stdev= 5.42, samples=211 write: IOPS=14, BW=57.7KiB/s (59.1kB/s)(6260KiB/108404msec); 0 zone resets clat (usec): min=878, max=890805, avg=37019.64, stdev=44619.69 lat (usec): min=879, max=890809, avg=37021.52, stdev=44619.71 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1352], 20.00th=[ 3195], | 30.00th=[ 8291], 40.00th=[ 17695], 50.00th=[ 28967], 60.00th=[ 37487], | 70.00th=[ 49021], 80.00th=[ 61080], 90.00th=[ 83362], 95.00th=[103285], | 99.00th=[149947], 99.50th=[250610], 99.90th=[408945], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 7, max= 126, per=24.99%, avg=57.47, stdev=22.34, samples=212 iops : min= 1, max= 31, avg=13.76, stdev= 5.63, samples=212 lat (usec) : 250=4.43%, 500=1.11%, 750=0.16%, 1000=0.20% lat (msec) : 2=8.66%, 4=3.12%, 10=5.60%, 20=11.88%, 50=39.68% lat (msec) : 100=21.48%, 250=3.39%, 500=0.26%, 1000=0.03% cpu : usr=0.09%, sys=7.30%, ctx=6507, 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=149079: Sun Nov 16 19:09:01 2025 read: IOPS=13, BW=55.4KiB/s (56.7kB/s)(6052KiB/109301msec) clat (usec): min=103, max=551096, avg=33581.48, stdev=28186.04 lat (usec): min=103, max=551097, avg=33583.21, stdev=28185.98 clat percentiles (usec): | 1.00th=[ 133], 5.00th=[ 174], 10.00th=[ 229], 20.00th=[ 15139], | 30.00th=[ 20317], 40.00th=[ 24249], 50.00th=[ 28967], 60.00th=[ 34341], | 70.00th=[ 41681], 80.00th=[ 51643], 90.00th=[ 65274], 95.00th=[ 79168], | 99.00th=[109577], 99.50th=[121111], 99.90th=[225444], 99.95th=[549454], | 99.99th=[549454] bw ( KiB/s): min= 7, max= 126, per=25.13%, avg=55.03, stdev=21.70, samples=213 iops : min= 1, max= 31, avg=13.15, stdev= 5.47, samples=213 write: IOPS=14, BW=57.1KiB/s (58.4kB/s)(6236KiB/109301msec); 0 zone resets clat (usec): min=869, max=901596, avg=37419.99, stdev=44015.52 lat (usec): min=871, max=901599, avg=37422.50, stdev=44015.88 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1188], 10.00th=[ 1369], 20.00th=[ 3621], | 30.00th=[ 8979], 40.00th=[ 18744], 50.00th=[ 28705], 60.00th=[ 38011], | 70.00th=[ 48497], 80.00th=[ 63177], 90.00th=[ 82314], 95.00th=[106431], | 99.00th=[164627], 99.50th=[221250], 99.90th=[379585], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 7, max= 134, per=24.62%, avg=56.62, stdev=21.49, samples=214 iops : min= 1, max= 33, avg=13.54, stdev= 5.41, samples=214 lat (usec) : 250=5.11%, 500=1.20%, 750=0.16%, 1000=0.16% lat (msec) : 2=7.85%, 4=3.26%, 10=5.63%, 20=11.98%, 50=39.55% lat (msec) : 100=21.13%, 250=3.74%, 500=0.16%, 750=0.03%, 1000=0.03% cpu : usr=0.11%, sys=7.35%, ctx=6502, 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=220KiB/s (225kB/s), 54.8KiB/s-55.7KiB/s (56.2kB/s-57.0kB/s), io=23.4MiB (24.6MB), run=106636-109301msec WRITE: bw=230KiB/s (236kB/s), 57.1KiB/s-59.5KiB/s (58.4kB/s-60.0kB/s), io=24.6MiB (25.7MB), run=106636-109301msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149071: Sun Nov 16 19:11:21 2025 read: IOPS=6, BW=24.2KiB/s (24.8kB/s)(5992KiB/247774msec) clat (msec): min=5, max=939, avg=29.16, stdev=36.35 lat (msec): min=5, max=939, avg=29.16, stdev=36.35 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 38], 90.00th=[ 62], 95.00th=[ 83], | 99.00th=[ 134], 99.50th=[ 155], 99.90th=[ 422], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 95, per=27.88%, avg=26.77, stdev=17.74, samples=433 iops : min= 1, max= 23, avg= 6.07, stdev= 4.46, samples=433 write: IOPS=6, BW=25.4KiB/s (26.0kB/s)(6296KiB/247774msec); 0 zone resets clat (msec): min=41, max=634, avg=129.42, stdev=56.44 lat (msec): min=41, max=634, avg=129.43, stdev=56.43 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 66], 10.00th=[ 74], 20.00th=[ 86], | 30.00th=[ 95], 40.00th=[ 105], 50.00th=[ 117], 60.00th=[ 130], | 70.00th=[ 146], 80.00th=[ 167], 90.00th=[ 203], 95.00th=[ 232], | 99.00th=[ 317], 99.50th=[ 355], 99.90th=[ 460], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 55, per=24.96%, avg=24.96, stdev=10.04, samples=486 iops : min= 1, max= 13, avg= 5.62, stdev= 2.56, samples=486 lat (msec) : 10=3.87%, 20=22.36%, 50=16.18%, 100=23.05%, 250=32.71% lat (msec) : 500=1.76%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=1.48%, ctx=5324, 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=149072: Sun Nov 16 19:11:21 2025 read: IOPS=5, BW=23.8KiB/s (24.4kB/s)(5940KiB/249553msec) clat (msec): min=5, max=864, avg=28.67, stdev=34.18 lat (msec): min=5, max=864, avg=28.67, stdev=34.18 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 27], 80.00th=[ 36], 90.00th=[ 59], 95.00th=[ 80], | 99.00th=[ 134], 99.50th=[ 169], 99.90th=[ 384], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 95, per=27.09%, avg=26.01, stdev=17.11, samples=441 iops : min= 1, max= 23, avg= 5.89, stdev= 4.30, samples=441 write: IOPS=6, BW=25.4KiB/s (26.0kB/s)(6348KiB/249553msec); 0 zone resets clat (msec): min=38, max=639, avg=130.18, stdev=56.20 lat (msec): min=38, max=639, avg=130.18, stdev=56.20 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 67], 10.00th=[ 75], 20.00th=[ 86], | 30.00th=[ 96], 40.00th=[ 107], 50.00th=[ 117], 60.00th=[ 132], | 70.00th=[ 146], 80.00th=[ 169], 90.00th=[ 203], 95.00th=[ 239], | 99.00th=[ 313], 99.50th=[ 351], 99.90th=[ 481], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 7, max= 56, per=24.99%, avg=24.99, stdev= 9.88, samples=490 iops : min= 1, max= 14, avg= 5.62, stdev= 2.51, samples=490 lat (msec) : 10=3.09%, 20=21.45%, 50=17.58%, 100=22.36%, 250=33.33% lat (msec) : 500=2.12%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=1.38%, ctx=5319, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149073: Sun Nov 16 19:11:21 2025 read: IOPS=6, BW=24.4KiB/s (24.0kB/s)(6028KiB/247196msec) clat (msec): min=6, max=291, avg=29.72, stdev=26.69 lat (msec): min=6, max=291, avg=29.72, stdev=26.69 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 42], 90.00th=[ 65], 95.00th=[ 83], | 99.00th=[ 123], 99.50th=[ 153], 99.90th=[ 284], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 111, per=27.22%, avg=26.13, stdev=17.46, samples=446 iops : min= 1, max= 27, avg= 5.91, stdev= 4.40, samples=446 write: IOPS=6, BW=25.3KiB/s (25.9kB/s)(6260KiB/247196msec); 0 zone resets clat (msec): min=39, max=955, avg=129.11, stdev=59.29 lat (msec): min=39, max=955, avg=129.12, stdev=59.29 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 65], 10.00th=[ 73], 20.00th=[ 85], | 30.00th=[ 95], 40.00th=[ 106], 50.00th=[ 117], 60.00th=[ 129], | 70.00th=[ 146], 80.00th=[ 165], 90.00th=[ 197], 95.00th=[ 234], | 99.00th=[ 330], 99.50th=[ 359], 99.90th=[ 485], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 56, per=24.98%, avg=24.98, stdev=10.32, samples=483 iops : min= 1, max= 14, avg= 5.62, stdev= 2.63, samples=483 lat (msec) : 10=3.87%, 20=21.32%, 50=16.54%, 100=23.99%, 250=32.26% lat (msec) : 500=1.99%, 1000=0.03% cpu : usr=0.06%, sys=1.45%, ctx=5177, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149074: Sun Nov 16 19:11:21 2025 read: IOPS=6, BW=24.6KiB/s (25.2kB/s)(6052KiB/245678msec) clat (msec): min=6, max=443, avg=29.11, stdev=31.20 lat (msec): min=6, max=443, avg=29.11, stdev=31.19 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 39], 90.00th=[ 61], 95.00th=[ 82], | 99.00th=[ 128], 99.50th=[ 153], 99.90th=[ 426], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7, max= 95, per=28.25%, avg=27.12, stdev=17.95, samples=432 iops : min= 1, max= 23, avg= 6.16, stdev= 4.53, samples=432 write: IOPS=6, BW=25.4KiB/s (25.0kB/s)(6236KiB/245678msec); 0 zone resets clat (msec): min=48, max=949, avg=129.11, stdev=58.42 lat (msec): min=48, max=949, avg=129.12, stdev=58.42 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 65], 10.00th=[ 73], 20.00th=[ 86], | 30.00th=[ 96], 40.00th=[ 106], 50.00th=[ 116], 60.00th=[ 130], | 70.00th=[ 142], 80.00th=[ 167], 90.00th=[ 203], 95.00th=[ 241], | 99.00th=[ 317], 99.50th=[ 355], 99.90th=[ 388], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 48, per=24.98%, avg=24.98, stdev=10.08, samples=481 iops : min= 1, max= 12, avg= 5.62, stdev= 2.56, samples=481 lat (msec) : 10=3.61%, 20=21.81%, 50=17.15%, 100=23.34%, 250=32.06% lat (msec) : 500=1.99%, 1000=0.03% cpu : usr=0.05%, sys=1.49%, ctx=5438, 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=96.2KiB/s (98.5kB/s), 23.8KiB/s-24.6KiB/s (24.4kB/s-25.2kB/s), io=23.4MiB (24.6MB), run=245678-249553msec WRITE: bw=101KiB/s (103kB/s), 25.3KiB/s-25.4KiB/s (25.9kB/s-26.0kB/s), io=24.6MiB (25.7MB), run=245678-249553msec 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=149144: Sun Nov 16 19:11:55 2025 read: IOPS=15, BW=254KiB/s (260kB/s)(5920KiB/23294msec) clat (usec): min=93, max=206249, avg=33956.17, stdev=26232.32 lat (usec): min=93, max=206251, avg=33957.71, stdev=26232.65 clat percentiles (usec): | 1.00th=[ 130], 5.00th=[ 157], 10.00th=[ 194], 20.00th=[ 15401], | 30.00th=[ 21627], 40.00th=[ 26346], 50.00th=[ 31327], 60.00th=[ 36439], | 70.00th=[ 41681], 80.00th=[ 50594], 90.00th=[ 61080], 95.00th=[ 69731], | 99.00th=[132645], 99.50th=[139461], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 61, max= 414, per=27.02%, avg=254.24, stdev=84.62, samples=45 iops : min= 3, max= 25, avg=15.27, stdev= 5.31, samples=45 write: IOPS=17, BW=273KiB/s (280kB/s)(6368KiB/23294msec); 0 zone resets clat (usec): min=1326, max=317465, avg=26826.34, stdev=29367.84 lat (usec): min=1328, max=317467, avg=26829.03, stdev=29367.86 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1663], 10.00th=[ 1909], 20.00th=[ 3949], | 30.00th=[ 6915], 40.00th=[ 11731], 50.00th=[ 16909], 60.00th=[ 24511], | 70.00th=[ 35914], 80.00th=[ 47449], 90.00th=[ 63701], 95.00th=[ 80217], | 99.00th=[112722], 99.50th=[127402], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 95, max= 478, per=27.70%, avg=274.49, stdev=97.49, samples=45 iops : min= 5, max= 29, avg=16.53, stdev= 6.14, samples=45 lat (usec) : 100=0.13%, 250=5.73%, 500=1.17%, 750=0.26% lat (msec) : 2=6.51%, 4=4.30%, 10=8.98%, 20=13.80%, 50=39.71% lat (msec) : 100=17.19%, 250=2.08%, 500=0.13% cpu : usr=0.14%, sys=9.28%, ctx=1587, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149145: Sun Nov 16 19:11:55 2025 read: IOPS=14, BW=226KiB/s (231kB/s)(5744KiB/25428msec) clat (usec): min=116, max=270652, avg=36269.20, stdev=31215.51 lat (usec): min=117, max=270653, avg=36270.67, stdev=31215.31 clat percentiles (usec): | 1.00th=[ 128], 5.00th=[ 159], 10.00th=[ 192], 20.00th=[ 10028], | 30.00th=[ 20841], 40.00th=[ 26870], 50.00th=[ 33424], 60.00th=[ 39584], | 70.00th=[ 46924], 80.00th=[ 54264], 90.00th=[ 66847], 95.00th=[ 86508], | 99.00th=[152044], 99.50th=[183501], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 474, per=24.41%, avg=229.65, stdev=97.69, samples=49 iops : min= 1, max= 29, avg=13.69, stdev= 6.13, samples=49 write: IOPS=16, BW=257KiB/s (264kB/s)(6544KiB/25428msec); 0 zone resets clat (usec): min=1338, max=251281, avg=30215.48, stdev=34325.85 lat (usec): min=1339, max=251283, avg=30217.87, stdev=34325.74 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1614], 10.00th=[ 1795], 20.00th=[ 3589], | 30.00th=[ 7242], 40.00th=[ 13173], 50.00th=[ 19792], 60.00th=[ 27395], | 70.00th=[ 37487], 80.00th=[ 50594], 90.00th=[ 72877], 95.00th=[ 91751], | 99.00th=[152044], 99.50th=[217056], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 63, max= 510, per=25.86%, avg=256.30, stdev=100.81, samples=50 iops : min= 3, max= 31, avg=15.38, stdev= 6.36, samples=50 lat (usec) : 250=6.12%, 500=1.82%, 750=0.26% lat (msec) : 2=7.16%, 4=4.82%, 10=7.68%, 20=12.24%, 50=36.59% lat (msec) : 100=19.66%, 250=3.39%, 500=0.26% cpu : usr=0.14%, sys=8.71%, ctx=1531, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149146: Sun Nov 16 19:11:55 2025 read: IOPS=15, BW=250KiB/s (256kB/s)(6256KiB/25035msec) clat (usec): min=112, max=382382, avg=33422.22, stdev=32200.47 lat (usec): min=113, max=382384, avg=33425.35, stdev=32201.03 clat percentiles (usec): | 1.00th=[ 125], 5.00th=[ 159], 10.00th=[ 215], 20.00th=[ 11994], | 30.00th=[ 19530], 40.00th=[ 24773], 50.00th=[ 29492], 60.00th=[ 34866], | 70.00th=[ 40633], 80.00th=[ 49021], 90.00th=[ 64226], 95.00th=[ 76022], | 99.00th=[164627], 99.50th=[177210], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 91, max= 476, per=26.72%, avg=251.43, stdev=89.73, samples=49 iops : min= 5, max= 29, avg=15.06, stdev= 5.61, samples=49 write: IOPS=15, BW=241KiB/s (247kB/s)(6032KiB/25035msec); 0 zone resets clat (usec): min=1405, max=179817, avg=31619.53, stdev=32616.12 lat (usec): min=1407, max=179819, avg=31671.41, stdev=32651.99 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1696], 10.00th=[ 2008], 20.00th=[ 4146], | 30.00th=[ 10552], 40.00th=[ 15008], 50.00th=[ 22152], 60.00th=[ 30540], | 70.00th=[ 39584], 80.00th=[ 52691], 90.00th=[ 71828], 95.00th=[ 93848], | 99.00th=[156238], 99.50th=[177210], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 95, max= 500, per=24.17%, avg=239.49, stdev=91.00, samples=49 iops : min= 5, max= 31, avg=14.35, stdev= 5.78, samples=49 lat (usec) : 250=5.99%, 500=1.95%, 750=0.13% lat (msec) : 2=5.34%, 4=4.95%, 10=5.34%, 20=14.71%, 50=41.15% lat (msec) : 100=16.93%, 250=3.39%, 500=0.13% cpu : usr=0.09%, sys=8.52%, ctx=1582, 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=149147: Sun Nov 16 19:11:55 2025 read: IOPS=15, BW=249KiB/s (255kB/s)(6032KiB/24263msec) clat (usec): min=111, max=206448, avg=33954.74, stdev=28606.76 lat (usec): min=111, max=206450, avg=33956.09, stdev=28606.77 clat percentiles (usec): | 1.00th=[ 118], 5.00th=[ 161], 10.00th=[ 188], 20.00th=[ 11731], | 30.00th=[ 18482], 40.00th=[ 24249], 50.00th=[ 30016], 60.00th=[ 35914], | 70.00th=[ 42730], 80.00th=[ 51643], 90.00th=[ 68682], 95.00th=[ 87557], | 99.00th=[137364], 99.50th=[168821], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 32, max= 473, per=26.14%, avg=245.96, stdev=90.54, samples=47 iops : min= 2, max= 29, avg=14.74, stdev= 5.62, samples=47 write: IOPS=16, BW=258KiB/s (264kB/s)(6256KiB/24263msec); 0 zone resets clat (usec): min=1335, max=329869, avg=29229.98, stdev=34823.79 lat (usec): min=1380, max=329870, avg=29233.95, stdev=34822.44 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1647], 10.00th=[ 1827], 20.00th=[ 3261], | 30.00th=[ 6718], 40.00th=[ 12256], 50.00th=[ 18482], 60.00th=[ 26346], | 70.00th=[ 35390], 80.00th=[ 47449], 90.00th=[ 73925], 95.00th=[ 87557], | 99.00th=[154141], 99.50th=[225444], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 61, max= 448, per=25.85%, avg=256.17, stdev=91.98, samples=47 iops : min= 3, max= 28, avg=15.36, stdev= 5.86, samples=47 lat (usec) : 250=6.38%, 500=0.91%, 750=0.26%, 1000=0.26% lat (msec) : 2=7.68%, 4=4.69%, 10=8.07%, 20=13.93%, 50=36.98% lat (msec) : 100=17.97%, 250=2.73%, 500=0.13% cpu : usr=0.08%, sys=8.77%, ctx=1511, 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=942KiB/s (965kB/s), 226KiB/s-254KiB/s (231kB/s-260kB/s), io=23.4MiB (24.5MB), run=23294-25428msec WRITE: bw=991KiB/s (1015kB/s), 241KiB/s-273KiB/s (247kB/s-280kB/s), io=24.6MiB (25.8MB), run=23294-25428msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149139: Sun Nov 16 19:12:32 2025 read: IOPS=5, BW=94.4KiB/s (96.7kB/s)(5920KiB/62721msec) clat (msec): min=6, max=340, avg=31.09, stdev=36.18 lat (msec): min=6, max=340, avg=31.10, stdev=36.18 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 37], 90.00th=[ 66], 95.00th=[ 99], | 99.00th=[ 232], 99.50th=[ 266], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 30, max= 319, per=26.08%, avg=98.84, stdev=60.10, samples=116 iops : min= 1, max= 19, avg= 5.41, stdev= 3.82, samples=116 write: IOPS=6, BW=102KiB/s (104kB/s)(6368KiB/62721msec); 0 zone resets clat (msec): min=42, max=360, avg=128.36, stdev=54.89 lat (msec): min=42, max=360, avg=128.36, stdev=54.89 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 66], 10.00th=[ 72], 20.00th=[ 86], | 30.00th=[ 94], 40.00th=[ 106], 50.00th=[ 117], 60.00th=[ 128], | 70.00th=[ 144], 80.00th=[ 163], 90.00th=[ 205], 95.00th=[ 236], | 99.00th=[ 317], 99.50th=[ 347], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 30, max= 192, per=25.28%, avg=100.85, stdev=42.06, samples=123 iops : min= 1, max= 12, avg= 5.54, stdev= 2.71, samples=123 lat (msec) : 10=3.12%, 20=21.09%, 50=17.71%, 100=22.40%, 250=33.33% lat (msec) : 500=2.34% cpu : usr=0.05%, sys=1.60%, ctx=1378, 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=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=149140: Sun Nov 16 19:12:32 2025 read: IOPS=5, BW=90.9KiB/s (93.1kB/s)(5744KiB/63156msec) clat (msec): min=6, max=235, avg=29.90, stdev=29.14 lat (msec): min=6, max=235, avg=29.90, stdev=29.14 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 22], | 70.00th=[ 28], 80.00th=[ 39], 90.00th=[ 64], 95.00th=[ 94], | 99.00th=[ 148], 99.50th=[ 199], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 21, max= 286, per=26.60%, avg=100.80, stdev=60.64, samples=111 iops : min= 1, max= 17, avg= 5.54, stdev= 3.82, samples=111 write: IOPS=6, BW=104KiB/s (106kB/s)(6544KiB/63156msec); 0 zone resets clat (msec): min=40, max=414, avg=127.85, stdev=54.56 lat (msec): min=40, max=414, avg=127.86, stdev=54.56 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 82], | 30.00th=[ 95], 40.00th=[ 106], 50.00th=[ 117], 60.00th=[ 129], | 70.00th=[ 142], 80.00th=[ 165], 90.00th=[ 201], 95.00th=[ 228], | 99.00th=[ 296], 99.50th=[ 351], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 31, max= 191, per=25.92%, avg=103.41, stdev=40.29, samples=123 iops : min= 1, max= 11, avg= 5.69, stdev= 2.59, samples=123 lat (msec) : 10=2.60%, 20=22.14%, 50=16.28%, 100=22.27%, 250=34.77% lat (msec) : 500=1.95% cpu : usr=0.04%, sys=1.65%, ctx=1452, 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=149141: Sun Nov 16 19:12:32 2025 read: IOPS=6, BW=103KiB/s (105kB/s)(6256KiB/61015msec) clat (msec): min=6, max=340, avg=29.76, stdev=33.93 lat (msec): min=6, max=340, avg=29.76, stdev=33.93 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 34], 90.00th=[ 58], 95.00th=[ 104], | 99.00th=[ 161], 99.50th=[ 249], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 30, max= 316, per=29.59%, avg=112.15, stdev=74.59, samples=110 iops : min= 1, max= 19, avg= 6.25, stdev= 4.79, samples=110 write: IOPS=6, BW=98.9KiB/s (101kB/s)(6032KiB/61015msec); 0 zone resets clat (msec): min=40, max=452, avg=130.77, stdev=59.89 lat (msec): min=40, max=452, avg=130.77, stdev=59.89 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 72], 20.00th=[ 87], | 30.00th=[ 97], 40.00th=[ 108], 50.00th=[ 118], 60.00th=[ 130], | 70.00th=[ 142], 80.00th=[ 163], 90.00th=[ 199], 95.00th=[ 251], | 99.00th=[ 359], 99.50th=[ 401], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 31, max= 222, per=24.83%, avg=99.08, stdev=39.86, samples=119 iops : min= 1, max= 13, avg= 5.43, stdev= 2.56, samples=119 lat (msec) : 10=3.12%, 20=24.35%, 50=17.84%, 100=19.14%, 250=33.07% lat (msec) : 500=2.47% cpu : usr=0.05%, sys=1.66%, ctx=1439, 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=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=149142: Sun Nov 16 19:12:32 2025 read: IOPS=6, BW=97.3KiB/s (99.6kB/s)(6032KiB/61988msec) clat (msec): min=6, max=275, avg=29.05, stdev=30.22 lat (msec): min=6, max=275, avg=29.06, stdev=30.22 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 37], 90.00th=[ 57], 95.00th=[ 83], | 99.00th=[ 197], 99.50th=[ 218], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 319, per=27.49%, avg=104.18, stdev=62.33, samples=113 iops : min= 1, max= 19, avg= 5.74, stdev= 3.96, samples=113 write: IOPS=6, BW=101KiB/s (103kB/s)(6256KiB/61988msec); 0 zone resets clat (msec): min=38, max=380, avg=130.21, stdev=52.38 lat (msec): min=38, max=380, avg=130.22, stdev=52.38 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 71], 10.00th=[ 78], 20.00th=[ 90], | 30.00th=[ 101], 40.00th=[ 109], 50.00th=[ 120], 60.00th=[ 130], | 70.00th=[ 146], 80.00th=[ 165], 90.00th=[ 197], 95.00th=[ 241], | 99.00th=[ 313], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 30, max= 190, per=25.62%, avg=102.22, stdev=35.73, samples=120 iops : min= 1, max= 11, avg= 5.63, stdev= 2.31, samples=120 lat (msec) : 10=2.99%, 20=22.53%, 50=18.10%, 100=19.53%, 250=34.64% lat (msec) : 500=2.21% cpu : usr=0.05%, sys=1.77%, ctx=1380, 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=379KiB/s (388kB/s), 90.9KiB/s-103KiB/s (93.1kB/s-105kB/s), io=23.4MiB (24.5MB), run=61015-63156msec WRITE: bw=399KiB/s (409kB/s), 98.9KiB/s-104KiB/s (101kB/s-106kB/s), io=24.6MiB (25.8MB), run=61015-63156msec 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=149161: Sun Nov 16 19:12:44 2025 read: IOPS=2, BW=2485KiB/s (2544kB/s)(7168KiB/2885msec) clat (msec): min=4, max=377, avg=170.34, stdev=138.36 lat (msec): min=4, max=377, avg=170.35, stdev=138.35 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 67], | 30.00th=[ 103], 40.00th=[ 103], 50.00th=[ 123], 60.00th=[ 186], | 70.00th=[ 186], 80.00th=[ 334], 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= 1954, max= 3624, per=61.63%, avg=2806.00, stdev=937.64, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1775KiB/s (1817kB/s)(5120KiB/2885msec); 0 zone resets clat (msec): min=205, max=515, avg=304.40, stdev=126.30 lat (msec): min=205, max=516, avg=304.48, stdev=126.33 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 222], 40.00th=[ 222], 50.00th=[ 259], 60.00th=[ 259], | 70.00th=[ 321], 80.00th=[ 321], 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= 1812, max= 4071, per=41.28%, avg=2631.33, stdev=1250.75, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 10=8.33%, 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33% cpu : usr=0.03%, sys=18.90%, ctx=209, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149162: Sun Nov 16 19:12:44 2025 read: IOPS=0, BW=455KiB/s (466kB/s)(2048KiB/4498msec) clat (usec): min=741, max=299510, avg=150126.33, stdev=211261.66 lat (usec): min=742, max=299513, avg=150128.13, stdev=211262.48 clat percentiles (usec): | 1.00th=[ 742], 5.00th=[ 742], 10.00th=[ 742], 20.00th=[ 742], | 30.00th=[ 742], 40.00th=[ 742], 50.00th=[ 742], 60.00th=[299893], | 70.00th=[299893], 80.00th=[299893], 90.00th=[299893], 95.00th=[299893], | 99.00th=[299893], 99.50th=[299893], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 1815, max= 2035, per=42.28%, avg=1925.00, stdev=155.56, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2277KiB/s (2331kB/s)(10.0MiB/4498msec); 0 zone resets clat (msec): min=171, max=753, avg=402.71, stdev=217.63 lat (msec): min=171, max=753, avg=403.08, stdev=217.79 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 180], | 30.00th=[ 184], 40.00th=[ 275], 50.00th=[ 321], 60.00th=[ 401], | 70.00th=[ 485], 80.00th=[ 531], 90.00th=[ 726], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1812, max= 5417, per=45.29%, avg=2886.50, stdev=1478.94, samples=6 iops : min= 1, max= 5, avg= 2.17, stdev= 1.60, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.04%, sys=16.19%, ctx=174, 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=149163: Sun Nov 16 19:12:44 2025 read: IOPS=1, BW=1678KiB/s (1718kB/s)(6144KiB/3662msec) clat (usec): min=599, max=356477, avg=184409.91, stdev=148564.99 lat (usec): min=599, max=356478, avg=184411.07, stdev=148565.16 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 603], 10.00th=[ 603], 20.00th=[ 3490], | 30.00th=[ 3490], 40.00th=[219153], 50.00th=[219153], 60.00th=[246416], | 70.00th=[278922], 80.00th=[278922], 90.00th=[354419], 95.00th=[354419], | 99.00th=[354419], 99.50th=[354419], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 2035, max= 4023, per=70.79%, avg=3223.00, stdev=1049.26, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1678KiB/s (1718kB/s)(6144KiB/3662msec); 0 zone resets clat (msec): min=127, max=839, avg=421.07, stdev=304.59 lat (msec): min=127, max=840, avg=421.15, stdev=304.58 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 279], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1805, max= 3785, per=37.79%, avg=2409.00, stdev=923.12, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 250=33.33%, 500=33.33%, 1000=16.67% cpu : usr=0.11%, sys=15.54%, ctx=202, 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=149164: Sun Nov 16 19:12:44 2025 read: IOPS=1, BW=1787KiB/s (1830kB/s)(5120KiB/2865msec) clat (usec): min=518, max=184470, avg=50413.59, stdev=79996.90 lat (usec): min=519, max=184472, avg=50414.74, stdev=79997.33 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 519], | 30.00th=[ 644], 40.00th=[ 644], 50.00th=[ 1057], 60.00th=[ 1057], | 70.00th=[ 65274], 80.00th=[ 65274], 90.00th=[183501], 95.00th=[183501], | 99.00th=[183501], 99.50th=[183501], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2502KiB/s (2562kB/s)(7168KiB/2865msec); 0 zone resets clat (msec): min=177, max=691, avg=365.54, stdev=204.71 lat (msec): min=178, max=691, avg=365.62, stdev=204.70 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 201], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 271], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 575], 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= 1805, max= 2035, per=30.33%, avg=1933.20, stdev=114.47, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=16.67% lat (msec) : 2=8.33%, 100=8.33%, 250=33.33%, 500=16.67%, 750=16.67% cpu : usr=0.03%, sys=20.08%, ctx=127, 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=4553KiB/s (4662kB/s), 455KiB/s-2485KiB/s (466kB/s-2544kB/s), io=20.0MiB (20.0MB), run=2865-4498msec WRITE: bw=6374KiB/s (6527kB/s), 1678KiB/s-2502KiB/s (1718kB/s-2562kB/s), io=28.0MiB (29.4MB), run=2865-4498msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149166: Sun Nov 16 19:12:44 2025 read: IOPS=1, BW=1832KiB/s (1876kB/s)(7168KiB/3912msec) clat (msec): min=84, max=927, avg=270.86, stdev=295.41 lat (msec): min=84, max=927, avg=270.86, stdev=295.41 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 88], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 209], 60.00th=[ 215], | 70.00th=[ 215], 80.00th=[ 224], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 1505, max= 3915, per=50.49%, avg=2273.00, stdev=941.86, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1309KiB/s (1340kB/s)(5120KiB/3912msec); 0 zone resets clat (msec): min=183, max=696, avg=372.35, stdev=203.41 lat (msec): min=184, max=696, avg=372.45, stdev=203.41 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 220], 40.00th=[ 220], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 409], 80.00th=[ 409], 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= 1924, max= 3946, per=41.88%, avg=2639.33, stdev=1133.30, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 100=16.67%, 250=50.00%, 500=16.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=7.24%, 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=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=149167: Sun Nov 16 19:12:44 2025 read: IOPS=0, BW=450KiB/s (461kB/s)(2048KiB/4549msec) clat (msec): min=188, max=601, avg=395.37, stdev=291.91 lat (msec): min=188, max=601, avg=395.37, stdev=291.91 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 600], | 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= 2031, max= 2048, per=45.30%, avg=2039.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2251KiB/s (2305kB/s)(10.0MiB/4549msec); 0 zone resets clat (msec): min=162, max=857, avg=372.95, stdev=219.73 lat (msec): min=162, max=857, avg=373.08, stdev=219.74 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 178], | 30.00th=[ 182], 40.00th=[ 230], 50.00th=[ 275], 60.00th=[ 380], | 70.00th=[ 414], 80.00th=[ 518], 90.00th=[ 535], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1950, max= 3842, per=36.75%, avg=2316.17, stdev=748.88, samples=6 iops : min= 1, max= 3, avg= 1.83, stdev= 0.75, samples=6 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.15%, sys=6.42%, ctx=124, 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=149168: Sun Nov 16 19:12:44 2025 read: IOPS=1, BW=1567KiB/s (1604kB/s)(6144KiB/3922msec) clat (msec): min=57, max=519, avg=179.00, stdev=171.40 lat (msec): min=57, max=519, avg=179.00, stdev=171.40 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 80], | 30.00th=[ 80], 40.00th=[ 110], 50.00th=[ 110], 60.00th=[ 153], | 70.00th=[ 155], 80.00th=[ 155], 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= 1973, max= 4096, per=73.43%, avg=3306.00, stdev=1161.00, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1567KiB/s (1604kB/s)(6144KiB/3922msec); 0 zone resets clat (msec): min=208, max=640, avg=443.63, stdev=169.36 lat (msec): min=208, max=640, avg=443.73, stdev=169.35 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 489], | 70.00th=[ 575], 80.00th=[ 575], 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= 1924, max= 2048, per=31.72%, avg=1999.20, stdev=56.10, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=25.00% cpu : usr=0.00%, sys=5.02%, ctx=50, 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=149169: Sun Nov 16 19:12:44 2025 read: IOPS=1, BW=1239KiB/s (1269kB/s)(5120KiB/4131msec) clat (msec): min=106, max=322, avg=188.04, stdev=97.14 lat (msec): min=106, max=322, avg=188.05, stdev=97.14 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 107], | 30.00th=[ 114], 40.00th=[ 114], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 259], 80.00th=[ 259], 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= 1973, max= 4096, per=60.10%, avg=2705.67, stdev=1204.65, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 write: IOPS=1, BW=1735KiB/s (1777kB/s)(7168KiB/4131msec); 0 zone resets clat (msec): min=135, max=916, avg=421.43, stdev=251.08 lat (msec): min=135, max=916, avg=421.54, stdev=251.09 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 251], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 384], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 510], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 1924, max= 3946, per=37.75%, avg=2378.80, stdev=877.46, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=5.11%, ctx=69, 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=4502KiB/s (4610kB/s), 450KiB/s-1832KiB/s (461kB/s-1876kB/s), io=20.0MiB (20.0MB), run=3912-4549msec WRITE: bw=6303KiB/s (6454kB/s), 1309KiB/s-2251KiB/s (1340kB/s-2305kB/s), io=28.0MiB (29.4MB), run=3912-4549msec 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=149175: Sun Nov 16 19:12:57 2025 read: IOPS=1, BW=5137KiB/s (5260kB/s)(12.0MiB/2392msec) clat (msec): min=623, max=920, avg=785.34, stdev=150.42 lat (msec): min=623, max=920, avg=785.35, stdev=150.42 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 8126, max= 8175, per=100.00%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=5.27%, ctx=58, 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=149176: Sun Nov 16 19:12:57 2025 read: IOPS=0, BW=988KiB/s (1012kB/s)(4096KiB/4145msec) clat (nsec): min=846640k, max=846640k, avg=846639707.00, stdev= 0.00 lat (nsec): min=846643k, max=846643k, avg=846642550.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 844], 5.00th=[ 844], 10.00th=[ 844], 20.00th=[ 844], | 30.00th=[ 844], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1976KiB/s (2024kB/s)(8192KiB/4145msec); 0 zone resets clat (msec): min=349, max=2803, avg=1576.65, stdev=1735.22 lat (msec): min=350, max=2804, avg=1577.03, stdev=1735.28 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 2802], | 70.00th=[ 2802], 80.00th=[ 2802], 90.00th=[ 2802], 95.00th=[ 2802], | 99.00th=[ 2802], 99.50th=[ 2802], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, 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=2.58%, ctx=46, 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=149177: Sun Nov 16 19:12:57 2025 write: IOPS=1, BW=6279KiB/s (6430kB/s)(12.0MiB/1957msec); 0 zone resets clat (msec): min=382, max=770, avg=624.68, stdev=211.01 lat (msec): min=383, max=771, avg=625.15, stdev=210.97 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 6410, max= 8175, per=92.25%, avg=7292.50, stdev=1248.04, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=6.60%, ctx=53, 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=149178: Sun Nov 16 19:12:57 2025 write: IOPS=2, BW=9409KiB/s (9635kB/s)(12.0MiB/1306msec); 0 zone resets clat (msec): min=300, max=632, avg=427.60, stdev=179.58 lat (msec): min=300, max=633, avg=427.99, stdev=179.59 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 634], 80.00th=[ 634], 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= 7135, max= 8126, per=96.53%, avg=7630.50, stdev=700.74, 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=0.15%, sys=10.34%, ctx=38, 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=3953KiB/s (4048kB/s), 988KiB/s-5137KiB/s (1012kB/s-5260kB/s), io=16.0MiB (16.8MB), run=2392-4145msec WRITE: bw=7905KiB/s (8095kB/s), 1976KiB/s-9409KiB/s (2024kB/s-9635kB/s), io=32.0MiB (33.6MB), run=1306-4145msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149180: Sun Nov 16 19:12:59 2025 read: IOPS=0, BW=3064KiB/s (3137kB/s)(12.0MiB/4011msec) clat (msec): min=557, max=2876, avg=1336.58, stdev=1333.95 lat (msec): min=557, max=2876, avg=1336.58, stdev=1333.95 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=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 7892, max= 8078, per=100.00%, avg=7985.00, stdev=131.52, 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=10.47%, ctx=787, 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=149181: Sun Nov 16 19:12:59 2025 read: IOPS=0, BW=1065KiB/s (1091kB/s)(4096KiB/3845msec) clat (nsec): min=861553k, max=861553k, avg=861553428.00, stdev= 0.00 lat (nsec): min=861555k, max=861555k, avg=861555371.00, stdev= 0.00 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=[ 860], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] 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=2131KiB/s (2182kB/s)(8192KiB/3845msec); 0 zone resets clat (msec): min=636, max=2345, avg=1490.92, stdev=1208.91 lat (msec): min=636, max=2346, avg=1491.31, stdev=1208.95 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 2333], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] 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 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=6.66%, ctx=98, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149182: Sun Nov 16 19:12:59 2025 write: IOPS=0, BW=2750KiB/s (2816kB/s)(12.0MiB/4468msec); 0 zone resets clat (msec): min=308, max=3424, avg=1488.58, stdev=1689.62 lat (msec): min=308, max=3424, avg=1489.00, stdev=1689.68 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 3440], 80.00th=[ 3440], 90.00th=[ 3440], 95.00th=[ 3440], | 99.00th=[ 3440], 99.50th=[ 3440], 99.90th=[ 3440], 99.95th=[ 3440], | 99.99th=[ 3440] bw ( KiB/s): min= 7968, max= 8126, per=100.00%, avg=8047.00, stdev=111.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.74%, ctx=116, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=149183: Sun Nov 16 19:12:59 2025 write: IOPS=0, BW=3250KiB/s (3328kB/s)(12.0MiB/3781msec); 0 zone resets clat (msec): min=455, max=2378, avg=1259.67, stdev=999.58 lat (msec): min=455, max=2379, avg=1260.02, stdev=999.59 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 2366], 80.00th=[ 2366], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7787, max= 7787, per=100.00%, avg=7787.00, 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=2.65%, ctx=30, 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=4085KiB/s (4183kB/s), 1065KiB/s-3064KiB/s (1091kB/s-3137kB/s), io=16.0MiB (16.8MB), run=3845-4011msec WRITE: bw=7334KiB/s (7510kB/s), 2131KiB/s-3250KiB/s (2182kB/s-3328kB/s), io=32.0MiB (33.6MB), run=3781-4468msec