== sanity test 398b: DIO and buffer IO race ============== 13:38:52 (1786037932) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.70639 s, 6.5 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=179179: Thu Aug 6 13:41:35 2026 read: IOPS=10, BW=43.8KiB/s (44.9kB/s)(5992KiB/136734msec) clat (usec): min=32, max=923140, avg=50775.23, stdev=41304.68 lat (usec): min=32, max=923141, avg=50780.29, stdev=41306.45 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 12518], 10.00th=[ 18482], 20.00th=[ 25035], | 30.00th=[ 30278], 40.00th=[ 36963], 50.00th=[ 42730], 60.00th=[ 49546], | 70.00th=[ 58459], 80.00th=[ 70779], 90.00th=[ 93848], 95.00th=[109577], | 99.00th=[175113], 99.50th=[227541], 99.90th=[354419], 99.95th=[926942], | 99.99th=[926942] bw ( KiB/s): min= 7, max= 103, per=25.44%, avg=43.25, stdev=18.06, samples=268 iops : min= 1, max= 25, avg=10.15, stdev= 4.54, samples=268 write: IOPS=11, BW=46.0KiB/s (47.1kB/s)(6296KiB/136734msec); 0 zone resets clat (usec): min=803, max=333289, avg=38220.69, stdev=38431.28 lat (usec): min=804, max=333291, avg=38230.44, stdev=38431.75 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1352], 10.00th=[ 1598], 20.00th=[ 4228], | 30.00th=[ 7832], 40.00th=[ 17433], 50.00th=[ 28181], 60.00th=[ 38011], | 70.00th=[ 50070], 80.00th=[ 67634], 90.00th=[ 91751], 95.00th=[113771], | 99.00th=[156238], 99.50th=[175113], 99.90th=[250610], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 7, max= 158, per=25.66%, avg=45.67, stdev=21.16, samples=267 iops : min= 1, max= 39, avg=10.76, stdev= 5.33, samples=267 lat (usec) : 50=0.36%, 100=1.37%, 250=0.10%, 750=0.03%, 1000=0.10% lat (msec) : 2=5.89%, 4=3.97%, 10=7.16%, 20=7.78%, 50=38.48% lat (msec) : 100=26.89%, 250=7.71%, 500=0.13%, 1000=0.03% cpu : usr=0.06%, sys=4.43%, ctx=6322, 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=179181: Thu Aug 6 13:41:35 2026 read: IOPS=10, BW=42.1KiB/s (43.2kB/s)(5940KiB/140936msec) clat (usec): min=36, max=361233, avg=50889.37, stdev=34530.28 lat (usec): min=37, max=361234, avg=50890.67, stdev=34530.33 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 10814], 10.00th=[ 18744], 20.00th=[ 25560], | 30.00th=[ 31327], 40.00th=[ 37487], 50.00th=[ 44303], 60.00th=[ 52167], | 70.00th=[ 60031], 80.00th=[ 70779], 90.00th=[ 90702], 95.00th=[112722], | 99.00th=[166724], 99.50th=[189793], 99.90th=[320865], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 7, max= 118, per=24.55%, avg=41.74, stdev=18.51, samples=277 iops : min= 1, max= 29, avg= 9.77, stdev= 4.66, samples=277 write: IOPS=11, BW=45.0KiB/s (46.1kB/s)(6348KiB/140936msec); 0 zone resets clat (usec): min=758, max=919971, avg=40880.98, stdev=46138.72 lat (usec): min=760, max=919972, avg=40884.60, stdev=46139.35 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1352], 10.00th=[ 1631], 20.00th=[ 4621], | 30.00th=[ 9765], 40.00th=[ 20055], 50.00th=[ 30278], 60.00th=[ 40109], | 70.00th=[ 52691], 80.00th=[ 69731], 90.00th=[ 96994], 95.00th=[116917], | 99.00th=[173016], 99.50th=[242222], 99.90th=[283116], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 7, max= 134, per=25.17%, avg=44.81, stdev=20.90, samples=275 iops : min= 1, max= 33, avg=10.55, stdev= 5.25, samples=275 lat (usec) : 50=0.13%, 100=1.66%, 250=0.03%, 750=0.10%, 1000=0.03% lat (msec) : 2=5.99%, 4=3.45%, 10=6.58%, 20=8.07%, 50=36.91% lat (msec) : 100=28.91%, 250=7.85%, 500=0.26%, 1000=0.03% cpu : usr=0.06%, sys=4.24%, ctx=6375, 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=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=179183: Thu Aug 6 13:41:35 2026 read: IOPS=11, BW=44.3KiB/s (45.4kB/s)(6028KiB/136092msec) clat (usec): min=37, max=313068, avg=49483.67, stdev=31174.52 lat (usec): min=38, max=313070, avg=49485.43, stdev=31174.55 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 13042], 10.00th=[ 19268], 20.00th=[ 25822], | 30.00th=[ 31589], 40.00th=[ 36439], 50.00th=[ 43254], 60.00th=[ 50594], | 70.00th=[ 58459], 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[107480], | 99.00th=[154141], 99.50th=[175113], 99.90th=[233833], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 87, per=25.81%, avg=43.88, stdev=16.25, samples=266 iops : min= 1, max= 21, avg=10.31, stdev= 4.08, samples=266 write: IOPS=11, BW=45.0KiB/s (47.1kB/s)(6260KiB/136092msec); 0 zone resets clat (usec): min=932, max=782341, avg=39006.28, stdev=44131.61 lat (usec): min=933, max=782343, avg=39013.49, stdev=44127.47 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1352], 10.00th=[ 1532], 20.00th=[ 4359], | 30.00th=[ 8586], 40.00th=[ 19006], 50.00th=[ 27919], 60.00th=[ 35390], | 70.00th=[ 48497], 80.00th=[ 66847], 90.00th=[ 95945], 95.00th=[117965], | 99.00th=[173016], 99.50th=[196084], 99.90th=[325059], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 7, max= 111, per=25.58%, avg=45.53, stdev=20.20, samples=266 iops : min= 1, max= 27, avg=10.73, stdev= 5.09, samples=266 lat (usec) : 50=0.23%, 100=1.60%, 250=0.10%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=6.48%, 4=3.12%, 10=6.87%, 20=7.91%, 50=38.96% lat (msec) : 100=26.79%, 250=7.75%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=4.27%, ctx=6293, 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=179185: Thu Aug 6 13:41:35 2026 read: IOPS=11, BW=44.1KiB/s (45.2kB/s)(6052KiB/137117msec) clat (usec): min=32, max=367512, avg=49999.49, stdev=32275.04 lat (usec): min=32, max=367512, avg=50001.73, stdev=32274.84 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 10945], 10.00th=[ 18220], 20.00th=[ 25822], | 30.00th=[ 31589], 40.00th=[ 37487], 50.00th=[ 43254], 60.00th=[ 50070], | 70.00th=[ 60031], 80.00th=[ 71828], 90.00th=[ 89654], 95.00th=[109577], | 99.00th=[147850], 99.50th=[173016], 99.90th=[287310], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 7, max= 111, per=25.90%, avg=44.02, stdev=17.88, samples=267 iops : min= 1, max= 27, avg=10.34, stdev= 4.51, samples=267 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(6236KiB/137117msec); 0 zone resets clat (usec): min=890, max=803700, avg=39150.97, stdev=44784.75 lat (usec): min=891, max=803701, avg=39154.81, stdev=44784.26 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1352], 10.00th=[ 1565], 20.00th=[ 4113], | 30.00th=[ 7963], 40.00th=[ 16188], 50.00th=[ 26870], 60.00th=[ 37487], | 70.00th=[ 51643], 80.00th=[ 68682], 90.00th=[ 89654], 95.00th=[117965], | 99.00th=[177210], 99.50th=[219153], 99.90th=[278922], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 7, max= 103, per=25.45%, avg=45.29, stdev=19.20, samples=267 iops : min= 1, max= 25, avg=10.67, stdev= 4.84, samples=267 lat (usec) : 50=0.46%, 100=1.56%, 250=0.13%, 500=0.07%, 1000=0.10% lat (msec) : 2=5.99%, 4=3.68%, 10=7.36%, 20=8.11%, 50=37.01% lat (msec) : 100=28.13%, 250=7.26%, 500=0.13%, 1000=0.03% cpu : usr=0.06%, sys=4.34%, ctx=6364, 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=170KiB/s (174kB/s), 42.1KiB/s-44.3KiB/s (43.2kB/s-45.4kB/s), io=23.4MiB (24.6MB), run=136092-140936msec WRITE: bw=178KiB/s (183kB/s), 45.0KiB/s-46.0KiB/s (46.1kB/s-47.1kB/s), io=24.6MiB (25.7MB), run=136092-140936msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179180: Thu Aug 6 13:42:21 2026 read: IOPS=8, BW=32.1KiB/s (32.9kB/s)(5992KiB/186693msec) clat (msec): min=5, max=936, avg=48.49, stdev=48.17 lat (msec): min=5, max=936, avg=48.49, stdev=48.17 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 51], 80.00th=[ 69], 90.00th=[ 109], 95.00th=[ 140], | 99.00th=[ 205], 99.50th=[ 234], 99.90th=[ 296], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 200, per=25.42%, avg=32.54, stdev=23.70, samples=356 iops : min= 1, max= 50, avg= 7.47, stdev= 5.99, samples=356 write: IOPS=8, BW=33.7KiB/s (34.5kB/s)(6296KiB/186693msec); 0 zone resets clat (msec): min=10, max=391, avg=72.18, stdev=49.55 lat (msec): min=10, max=391, avg=72.19, stdev=49.55 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 49], 50.00th=[ 57], 60.00th=[ 70], | 70.00th=[ 87], 80.00th=[ 105], 90.00th=[ 134], 95.00th=[ 163], | 99.00th=[ 251], 99.50th=[ 284], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 7, max= 135, per=24.90%, avg=33.36, stdev=21.03, samples=365 iops : min= 1, max= 33, avg= 7.67, stdev= 5.29, samples=365 lat (msec) : 10=1.92%, 20=11.62%, 50=41.83%, 100=27.60%, 250=16.28% lat (msec) : 500=0.72%, 1000=0.03% cpu : usr=0.05%, sys=1.71%, ctx=4734, 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=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=179182: Thu Aug 6 13:42:21 2026 read: IOPS=7, BW=31.9KiB/s (32.6kB/s)(5940KiB/186452msec) clat (msec): min=4, max=796, avg=48.64, stdev=45.99 lat (msec): min=4, max=796, avg=48.65, stdev=45.99 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 71], 90.00th=[ 104], 95.00th=[ 138], | 99.00th=[ 197], 99.50th=[ 234], 99.90th=[ 376], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 192, per=25.22%, avg=32.28, stdev=23.51, samples=356 iops : min= 1, max= 48, avg= 7.40, stdev= 5.93, samples=356 write: IOPS=8, BW=34.0KiB/s (34.9kB/s)(6348KiB/186452msec); 0 zone resets clat (msec): min=8, max=359, avg=71.73, stdev=46.96 lat (msec): min=8, max=359, avg=71.73, stdev=46.96 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 50], 50.00th=[ 59], 60.00th=[ 70], | 70.00th=[ 85], 80.00th=[ 105], 90.00th=[ 132], 95.00th=[ 167], | 99.00th=[ 226], 99.50th=[ 255], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 127, per=25.20%, avg=33.77, stdev=20.53, samples=363 iops : min= 1, max= 31, avg= 7.77, stdev= 5.16, samples=363 lat (msec) : 10=1.92%, 20=10.84%, 50=41.18%, 100=29.88%, 250=15.69% lat (msec) : 500=0.46%, 1000=0.03% cpu : usr=0.04%, sys=1.77%, ctx=4840, 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=179184: Thu Aug 6 13:42:21 2026 read: IOPS=8, BW=32.3KiB/s (33.1kB/s)(6028KiB/186519msec) clat (msec): min=5, max=265, avg=47.00, stdev=40.42 lat (msec): min=5, max=265, avg=47.00, stdev=40.43 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 69], 90.00th=[ 105], 95.00th=[ 138], | 99.00th=[ 188], 99.50th=[ 218], 99.90th=[ 255], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 7, max= 136, per=25.65%, avg=32.83, stdev=22.56, samples=356 iops : min= 1, max= 34, avg= 7.54, stdev= 5.68, samples=356 write: IOPS=8, BW=33.6KiB/s (34.4kB/s)(6260KiB/186519msec); 0 zone resets clat (msec): min=10, max=797, avg=73.66, stdev=52.28 lat (msec): min=10, max=797, avg=73.66, stdev=52.28 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 27], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 50], 50.00th=[ 59], 60.00th=[ 72], | 70.00th=[ 88], 80.00th=[ 107], 90.00th=[ 138], 95.00th=[ 161], | 99.00th=[ 255], 99.50th=[ 300], 99.90th=[ 401], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 136, per=25.09%, avg=33.62, stdev=20.49, samples=361 iops : min= 1, max= 34, avg= 7.74, stdev= 5.16, samples=361 lat (msec) : 10=1.66%, 20=12.21%, 50=40.92%, 100=28.09%, 250=16.50% lat (msec) : 500=0.59%, 1000=0.03% cpu : usr=0.03%, sys=1.75%, ctx=4646, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179186: Thu Aug 6 13:42:21 2026 read: IOPS=8, BW=32.4KiB/s (33.2kB/s)(6052KiB/186671msec) clat (msec): min=5, max=377, avg=49.20, stdev=44.07 lat (msec): min=5, max=377, avg=49.21, stdev=44.07 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 55], 80.00th=[ 73], 90.00th=[ 105], 95.00th=[ 142], | 99.00th=[ 213], 99.50th=[ 259], 99.90th=[ 334], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 143, per=26.02%, avg=33.30, stdev=22.90, samples=352 iops : min= 1, max= 35, avg= 7.66, stdev= 5.76, samples=352 write: IOPS=8, BW=33.4KiB/s (34.2kB/s)(6236KiB/186671msec); 0 zone resets clat (msec): min=8, max=806, avg=71.74, stdev=52.74 lat (msec): min=8, max=806, avg=71.74, stdev=52.74 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 22], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 68], | 70.00th=[ 83], 80.00th=[ 104], 90.00th=[ 134], 95.00th=[ 167], | 99.00th=[ 257], 99.50th=[ 296], 99.90th=[ 376], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 160, per=24.75%, avg=33.16, stdev=20.85, samples=364 iops : min= 1, max= 40, avg= 7.62, stdev= 5.26, samples=364 lat (msec) : 10=1.95%, 20=11.07%, 50=42.22%, 100=28.26%, 250=15.56% lat (msec) : 500=0.91%, 1000=0.03% cpu : usr=0.05%, sys=1.71%, ctx=4754, 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=129KiB/s (132kB/s), 31.9KiB/s-32.4KiB/s (32.6kB/s-33.2kB/s), io=23.4MiB (24.6MB), run=186452-186693msec WRITE: bw=135KiB/s (138kB/s), 33.4KiB/s-34.0KiB/s (34.2kB/s-34.9kB/s), io=24.6MiB (25.7MB), run=186452-186693msec 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=179234: Thu Aug 6 13:43:12 2026 read: IOPS=9, BW=157KiB/s (161kB/s)(5920KiB/37610msec) clat (usec): min=38, max=232819, avg=54119.58, stdev=36600.07 lat (usec): min=38, max=232820, avg=54124.73, stdev=36599.19 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 64], 10.00th=[ 10945], 20.00th=[ 26346], | 30.00th=[ 33424], 40.00th=[ 42206], 50.00th=[ 49021], 60.00th=[ 57410], | 70.00th=[ 66847], 80.00th=[ 77071], 90.00th=[ 94897], 95.00th=[126354], | 99.00th=[183501], 99.50th=[185598], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 30, max= 352, per=25.20%, avg=156.49, stdev=60.18, samples=73 iops : min= 1, max= 22, avg= 9.05, stdev= 3.92, samples=73 write: IOPS=10, BW=169KiB/s (173kB/s)(6368KiB/37610msec); 0 zone resets clat (usec): min=1728, max=225672, avg=43863.41, stdev=44341.40 lat (usec): min=1730, max=225673, avg=43886.57, stdev=44379.65 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2114], 10.00th=[ 3523], 20.00th=[ 6521], | 30.00th=[ 12518], 40.00th=[ 18744], 50.00th=[ 29230], 60.00th=[ 39584], | 70.00th=[ 56361], 80.00th=[ 77071], 90.00th=[106431], 95.00th=[135267], | 99.00th=[189793], 99.50th=[198181], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 31, max= 442, per=26.23%, avg=171.54, stdev=79.82, samples=72 iops : min= 1, max= 27, avg=10.01, stdev= 5.11, samples=72 lat (usec) : 50=0.91%, 100=2.99%, 500=0.13%, 750=0.13%, 1000=0.13% lat (msec) : 2=2.47%, 4=3.65%, 10=8.20%, 20=9.11%, 50=31.64% lat (msec) : 100=29.56%, 250=11.07% cpu : usr=0.06%, sys=4.24%, ctx=1609, 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=179235: Thu Aug 6 13:43:12 2026 read: IOPS=9, BW=152KiB/s (155kB/s)(5744KiB/37850msec) clat (usec): min=46, max=229630, avg=54894.35, stdev=33710.68 lat (usec): min=47, max=229631, avg=54896.35, stdev=33710.08 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 69], 10.00th=[ 17957], 20.00th=[ 30016], | 30.00th=[ 35390], 40.00th=[ 42730], 50.00th=[ 50070], 60.00th=[ 57410], | 70.00th=[ 69731], 80.00th=[ 79168], 90.00th=[102237], 95.00th=[119014], | 99.00th=[149947], 99.50th=[168821], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 21, max= 416, per=24.92%, avg=154.73, stdev=73.64, samples=73 iops : min= 1, max= 26, avg= 8.95, stdev= 4.70, samples=73 write: IOPS=10, BW=173KiB/s (177kB/s)(6544KiB/37850msec); 0 zone resets clat (usec): min=1506, max=318559, avg=43351.64, stdev=45568.27 lat (usec): min=1509, max=318561, avg=43353.89, stdev=45568.22 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2008], 10.00th=[ 2802], 20.00th=[ 6456], | 30.00th=[ 13042], 40.00th=[ 22676], 50.00th=[ 31851], 60.00th=[ 40109], | 70.00th=[ 51119], 80.00th=[ 70779], 90.00th=[100140], 95.00th=[131597], | 99.00th=[212861], 99.50th=[246416], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 21, max= 352, per=26.52%, avg=173.46, stdev=74.77, samples=74 iops : min= 1, max= 22, avg=10.14, stdev= 4.75, samples=74 lat (usec) : 50=0.13%, 100=2.99%, 250=0.39% lat (msec) : 2=2.73%, 4=4.04%, 10=7.81%, 20=7.03%, 50=34.90% lat (msec) : 100=29.56%, 250=10.16%, 500=0.26% cpu : usr=0.06%, sys=4.29%, ctx=1710, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179236: Thu Aug 6 13:43:12 2026 read: IOPS=10, BW=162KiB/s (166kB/s)(6256KiB/38518msec) clat (usec): min=44, max=205746, avg=54287.89, stdev=35216.32 lat (usec): min=45, max=205748, avg=54289.31, stdev=35216.35 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 64], 10.00th=[ 13960], 20.00th=[ 28705], | 30.00th=[ 35390], 40.00th=[ 44303], 50.00th=[ 50070], 60.00th=[ 56886], | 70.00th=[ 66323], 80.00th=[ 77071], 90.00th=[ 94897], 95.00th=[124257], | 99.00th=[173016], 99.50th=[185598], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 31, max= 286, per=26.23%, avg=162.89, stdev=59.28, samples=75 iops : min= 1, max= 17, avg= 9.48, stdev= 3.74, samples=75 write: IOPS=9, BW=157KiB/s (160kB/s)(6032KiB/38518msec); 0 zone resets clat (usec): min=1603, max=299304, avg=45193.27, stdev=43815.98 lat (usec): min=1605, max=299306, avg=45195.65, stdev=43816.08 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2024], 10.00th=[ 3523], 20.00th=[ 6915], | 30.00th=[ 12780], 40.00th=[ 21627], 50.00th=[ 34866], 60.00th=[ 43779], | 70.00th=[ 59507], 80.00th=[ 80217], 90.00th=[103285], 95.00th=[130548], | 99.00th=[187696], 99.50th=[246416], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 31, max= 376, per=23.66%, avg=154.76, stdev=65.71, samples=75 iops : min= 1, max= 23, avg= 8.96, stdev= 4.25, samples=75 lat (usec) : 50=0.26%, 100=4.04%, 250=0.26%, 500=0.13% lat (msec) : 2=2.08%, 4=4.43%, 10=6.38%, 20=7.03%, 50=32.42% lat (msec) : 100=33.07%, 250=9.77%, 500=0.13% cpu : usr=0.05%, sys=4.57%, ctx=1704, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179238: Thu Aug 6 13:43:12 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(6032KiB/37424msec) clat (usec): min=38, max=311079, avg=54600.09, stdev=40295.51 lat (usec): min=38, max=311080, avg=54601.48, stdev=40295.45 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 60], 10.00th=[ 388], 20.00th=[ 27395], | 30.00th=[ 34866], 40.00th=[ 40633], 50.00th=[ 47449], 60.00th=[ 54264], | 70.00th=[ 64226], 80.00th=[ 79168], 90.00th=[103285], 95.00th=[125305], | 99.00th=[200279], 99.50th=[274727], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 31, max= 282, per=26.04%, avg=161.72, stdev=61.01, samples=72 iops : min= 1, max= 17, avg= 9.39, stdev= 3.92, samples=72 write: IOPS=10, BW=167KiB/s (171kB/s)(6256KiB/37424msec); 0 zone resets clat (usec): min=1708, max=250406, avg=41861.11, stdev=41820.32 lat (usec): min=1710, max=250409, avg=41867.76, stdev=41816.54 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 1942], 10.00th=[ 2573], 20.00th=[ 6128], | 30.00th=[ 10290], 40.00th=[ 19530], 50.00th=[ 30540], 60.00th=[ 41157], | 70.00th=[ 51643], 80.00th=[ 70779], 90.00th=[102237], 95.00th=[124257], | 99.00th=[187696], 99.50th=[189793], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 31, max= 383, per=25.49%, avg=166.73, stdev=74.43, samples=73 iops : min= 1, max= 23, avg= 9.70, stdev= 4.74, samples=73 lat (usec) : 50=0.26%, 100=4.43%, 250=0.13%, 500=0.13% lat (msec) : 2=3.78%, 4=3.78%, 10=7.16%, 20=7.68%, 50=34.24% lat (msec) : 100=27.86%, 250=10.16%, 500=0.39% cpu : usr=0.04%, sys=4.42%, ctx=1613, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=622KiB/s (637kB/s), 152KiB/s-162KiB/s (155kB/s-166kB/s), io=23.4MiB (24.5MB), run=37424-38518msec WRITE: bw=654KiB/s (670kB/s), 157KiB/s-173KiB/s (160kB/s-177kB/s), io=24.6MiB (25.8MB), run=37424-38518msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179237: Thu Aug 6 13:43:25 2026 read: IOPS=7, BW=115KiB/s (118kB/s)(5920KiB/51393msec) clat (msec): min=8, max=345, avg=56.75, stdev=50.65 lat (msec): min=8, max=345, avg=56.75, stdev=50.65 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 61], 80.00th=[ 88], 90.00th=[ 133], 95.00th=[ 165], | 99.00th=[ 215], 99.50th=[ 266], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 31, max= 352, per=25.07%, avg=115.55, stdev=76.52, samples=100 iops : min= 1, max= 22, avg= 6.36, stdev= 4.84, samples=100 write: IOPS=7, BW=124KiB/s (127kB/s)(6368KiB/51393msec); 0 zone resets clat (msec): min=12, max=374, avg=75.31, stdev=53.65 lat (msec): min=12, max=374, avg=75.31, stdev=53.65 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 53], 50.00th=[ 59], 60.00th=[ 70], | 70.00th=[ 84], 80.00th=[ 110], 90.00th=[ 144], 95.00th=[ 182], | 99.00th=[ 262], 99.50th=[ 338], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 30, max= 443, per=26.16%, avg=126.89, stdev=81.04, samples=98 iops : min= 1, max= 27, avg= 7.09, stdev= 5.13, samples=98 lat (msec) : 10=0.52%, 20=8.98%, 50=41.67%, 100=29.30%, 250=18.23% lat (msec) : 500=1.30% cpu : usr=0.04%, sys=1.53%, ctx=1185, 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=179239: Thu Aug 6 13:43:25 2026 read: IOPS=7, BW=113KiB/s (116kB/s)(5744KiB/50707msec) clat (msec): min=6, max=222, avg=53.12, stdev=43.21 lat (msec): min=6, max=222, avg=53.12, stdev=43.22 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 21], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 41], 60.00th=[ 48], | 70.00th=[ 56], 80.00th=[ 73], 90.00th=[ 121], 95.00th=[ 161], | 99.00th=[ 199], 99.50th=[ 222], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 601, per=26.06%, avg=120.16, stdev=85.01, samples=94 iops : min= 1, max= 37, avg= 6.67, stdev= 5.37, samples=94 write: IOPS=8, BW=129KiB/s (132kB/s)(6544KiB/50707msec); 0 zone resets clat (msec): min=14, max=363, avg=77.07, stdev=53.52 lat (msec): min=14, max=363, avg=77.07, stdev=53.52 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 38], | 30.00th=[ 45], 40.00th=[ 54], 50.00th=[ 62], 60.00th=[ 72], | 70.00th=[ 87], 80.00th=[ 111], 90.00th=[ 148], 95.00th=[ 174], | 99.00th=[ 266], 99.50th=[ 300], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 31, max= 378, per=26.51%, avg=128.56, stdev=74.72, samples=100 iops : min= 1, max= 23, avg= 7.19, stdev= 4.73, samples=100 lat (msec) : 10=1.17%, 20=8.33%, 50=39.19%, 100=31.90%, 250=18.49% lat (msec) : 500=0.91% cpu : usr=0.05%, sys=1.73%, ctx=1199, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179240: Thu Aug 6 13:43:25 2026 read: IOPS=7, BW=122KiB/s (125kB/s)(6256KiB/51090msec) clat (msec): min=7, max=278, avg=52.78, stdev=45.80 lat (msec): min=7, max=278, avg=52.78, stdev=45.80 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 54], 80.00th=[ 79], 90.00th=[ 121], 95.00th=[ 150], | 99.00th=[ 228], 99.50th=[ 266], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 441, per=27.96%, avg=128.89, stdev=96.09, samples=95 iops : min= 1, max= 27, avg= 7.22, stdev= 6.10, samples=95 write: IOPS=7, BW=118KiB/s (121kB/s)(6032KiB/51090msec); 0 zone resets clat (msec): min=18, max=398, avg=79.85, stdev=57.24 lat (msec): min=18, max=398, avg=79.85, stdev=57.24 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 44], 40.00th=[ 52], 50.00th=[ 60], 60.00th=[ 75], | 70.00th=[ 91], 80.00th=[ 122], 90.00th=[ 163], 95.00th=[ 190], | 99.00th=[ 264], 99.50th=[ 372], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 30, max= 348, per=24.22%, avg=117.44, stdev=73.22, samples=99 iops : min= 1, max= 21, avg= 6.48, stdev= 4.62, samples=99 lat (msec) : 10=1.17%, 20=8.33%, 50=42.71%, 100=27.21%, 250=19.66% lat (msec) : 500=0.91% cpu : usr=0.04%, sys=1.59%, ctx=1196, 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=179241: Thu Aug 6 13:43:25 2026 read: IOPS=7, BW=116KiB/s (119kB/s)(6032KiB/51866msec) clat (msec): min=7, max=351, avg=55.96, stdev=50.38 lat (msec): min=7, max=351, avg=55.97, stdev=50.38 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 20], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 37], 60.00th=[ 48], | 70.00th=[ 61], 80.00th=[ 93], 90.00th=[ 122], 95.00th=[ 153], | 99.00th=[ 249], 99.50th=[ 275], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 31, max= 379, per=26.32%, avg=121.31, stdev=81.37, samples=96 iops : min= 1, max= 23, avg= 6.74, stdev= 5.14, samples=96 write: IOPS=7, BW=121KiB/s (124kB/s)(6256KiB/51866msec); 0 zone resets clat (msec): min=13, max=420, avg=77.94, stdev=56.10 lat (msec): min=13, max=420, avg=77.95, stdev=56.10 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 23], 10.00th=[ 29], 20.00th=[ 37], | 30.00th=[ 44], 40.00th=[ 51], 50.00th=[ 59], 60.00th=[ 69], | 70.00th=[ 89], 80.00th=[ 118], 90.00th=[ 159], 95.00th=[ 182], | 99.00th=[ 266], 99.50th=[ 372], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 29, max= 352, per=25.58%, avg=124.06, stdev=78.46, samples=98 iops : min= 1, max= 22, avg= 6.91, stdev= 4.96, samples=98 lat (msec) : 10=1.82%, 20=10.16%, 50=38.67%, 100=27.60%, 250=20.70% lat (msec) : 500=1.04% cpu : usr=0.03%, sys=1.70%, ctx=1248, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=462KiB/s (473kB/s), 113KiB/s-122KiB/s (116kB/s-125kB/s), io=23.4MiB (24.5MB), run=50707-51866msec WRITE: bw=486KiB/s (498kB/s), 118KiB/s-129KiB/s (121kB/s-132kB/s), io=24.6MiB (25.8MB), run=50707-51866msec 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=179260: Thu Aug 6 13:43:38 2026 read: IOPS=1, BW=1646KiB/s (1686kB/s)(7168KiB/4354msec) clat (msec): min=42, max=316, avg=179.80, stdev=105.91 lat (msec): min=42, max=316, avg=179.80, stdev=105.91 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 43], 10.00th=[ 43], 20.00th=[ 93], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 159], 60.00th=[ 224], | 70.00th=[ 224], 80.00th=[ 305], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 1976, max= 4585, per=83.57%, avg=3544.00, stdev=1382.03, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1176KiB/s (1204kB/s)(5120KiB/4354msec); 0 zone resets clat (msec): min=113, max=1441, avg=611.07, stdev=513.70 lat (msec): min=113, max=1441, avg=611.15, stdev=513.71 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 502], 60.00th=[ 502], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 1976, max= 4047, per=42.28%, avg=2510.50, stdev=1024.48, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=11.12%, ctx=237, 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=179262: Thu Aug 6 13:43:38 2026 read: IOPS=0, BW=424KiB/s (434kB/s)(2048KiB/4828msec) clat (msec): min=167, max=289, avg=228.17, stdev=86.08 lat (msec): min=167, max=289, avg=228.17, stdev=86.07 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 167], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 288], 95.00th=[ 288], | 99.00th=[ 288], 99.50th=[ 288], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 1570, max= 1976, per=41.81%, avg=1773.00, stdev=287.09, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2121KiB/s (2172kB/s)(10.0MiB/4828msec); 0 zone resets clat (msec): min=160, max=715, avg=423.14, stdev=201.03 lat (msec): min=160, max=715, avg=423.25, stdev=200.99 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 163], | 30.00th=[ 236], 40.00th=[ 393], 50.00th=[ 401], 60.00th=[ 422], | 70.00th=[ 485], 80.00th=[ 550], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 2031, max= 4047, per=50.50%, avg=2998.83, stdev=1060.83, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=33.33%, 500=41.67%, 750=25.00% cpu : usr=0.00%, sys=13.76%, ctx=291, 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=179264: Thu Aug 6 13:43:38 2026 read: IOPS=1, BW=1854KiB/s (1898kB/s)(6144KiB/3314msec) clat (usec): min=522, max=354400, avg=159724.34, stdev=150046.59 lat (usec): min=523, max=354401, avg=159725.68, stdev=150046.33 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 1270], | 30.00th=[ 1270], 40.00th=[ 88605], 50.00th=[ 88605], 60.00th=[246416], | 70.00th=[267387], 80.00th=[267387], 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= 2023, max= 4071, per=78.97%, avg=3349.00, stdev=1149.86, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1854KiB/s (1898kB/s)(6144KiB/3314msec); 0 zone resets clat (msec): min=183, max=542, avg=373.79, stdev=117.51 lat (msec): min=183, max=542, avg=373.87, stdev=117.51 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 397], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1651, max= 2035, per=32.95%, avg=1956.50, stdev=151.24, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 100=8.33%, 250=16.67%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=13.70%, ctx=154, 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=179265: Thu Aug 6 13:43:38 2026 read: IOPS=1, BW=1214KiB/s (1243kB/s)(5120KiB/4219msec) clat (usec): min=394, max=409417, avg=82380.11, stdev=182819.74 lat (usec): min=395, max=409418, avg=82381.20, stdev=182819.48 clat percentiles (usec): | 1.00th=[ 396], 5.00th=[ 396], 10.00th=[ 396], 20.00th=[ 396], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 1074], 80.00th=[ 1074], 90.00th=[408945], 95.00th=[408945], | 99.00th=[408945], 99.50th=[408945], 99.90th=[408945], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 2035, max= 5710, per=91.31%, avg=3872.50, stdev=2598.62, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1699KiB/s (1740kB/s)(7168KiB/4219msec); 0 zone resets clat (msec): min=275, max=1263, avg=507.21, stdev=348.99 lat (msec): min=275, max=1263, avg=507.29, stdev=348.99 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 288], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 359], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 550], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 1514, max= 2035, per=32.02%, avg=1901.20, stdev=223.39, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 2=8.33%, 500=50.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=10.43%, ctx=120, 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=4242KiB/s (4344kB/s), 424KiB/s-1854KiB/s (434kB/s-1898kB/s), io=20.0MiB (20.0MB), run=3314-4828msec WRITE: bw=5939KiB/s (6081kB/s), 1176KiB/s-2121KiB/s (1204kB/s-2172kB/s), io=28.0MiB (29.4MB), run=3314-4828msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179261: Thu Aug 6 13:43:39 2026 read: IOPS=1, BW=1961KiB/s (2008kB/s)(7168KiB/3656msec) clat (msec): min=65, max=686, avg=315.07, stdev=232.34 lat (msec): min=65, max=686, avg=315.08, stdev=232.34 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 138], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 309], 80.00th=[ 558], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1950, max= 4654, per=73.64%, avg=2669.50, stdev=1323.64, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1400KiB/s (1434kB/s)(5120KiB/3656msec); 0 zone resets clat (msec): min=136, max=520, avg=287.45, stdev=165.38 lat (msec): min=136, max=520, avg=287.53, stdev=165.39 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 253], 60.00th=[ 253], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 2031, max= 4079, per=50.19%, avg=2547.00, stdev=1021.35, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=25.00% cpu : usr=0.00%, sys=3.42%, ctx=65, 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=179263: Thu Aug 6 13:43:39 2026 read: IOPS=0, BW=385KiB/s (394kB/s)(2048KiB/5319msec) clat (msec): min=178, max=448, avg=313.39, stdev=191.02 lat (msec): min=178, max=448, avg=313.39, stdev=191.02 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=[ 447], | 70.00th=[ 447], 80.00th=[ 447], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 1607, max= 2035, per=50.23%, avg=1821.00, stdev=302.64, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1925KiB/s (1971kB/s)(10.0MiB/5319msec); 0 zone resets clat (msec): min=190, max=874, avg=452.41, stdev=267.75 lat (msec): min=193, max=874, avg=452.74, stdev=267.49 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 224], | 30.00th=[ 241], 40.00th=[ 253], 50.00th=[ 266], 60.00th=[ 342], | 70.00th=[ 651], 80.00th=[ 684], 90.00th=[ 802], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 2019, max= 6095, per=70.88%, avg=3597.40, stdev=1686.57, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 250=33.33%, 500=33.33%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=4.78%, ctx=128, 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=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=179266: Thu Aug 6 13:43:39 2026 read: IOPS=1, BW=1314KiB/s (1345kB/s)(6144KiB/4677msec) clat (msec): min=58, max=937, avg=279.36, stdev=334.22 lat (msec): min=58, max=937, avg=279.36, stdev=334.22 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 83], | 30.00th=[ 83], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 144], | 70.00th=[ 313], 80.00th=[ 313], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1903, max= 4079, per=68.28%, avg=2475.25, stdev=1069.53, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1314KiB/s (1345kB/s)(6144KiB/4677msec); 0 zone resets clat (msec): min=154, max=706, avg=480.25, stdev=215.31 lat (msec): min=154, max=706, avg=480.44, stdev=215.21 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 600], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1950, max= 4063, per=49.38%, avg=2506.25, stdev=1038.61, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=16.67%, 750=33.33%, 1000=8.33% cpu : usr=0.02%, sys=5.00%, ctx=129, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179267: Thu Aug 6 13:43:39 2026 read: IOPS=0, BW=906KiB/s (928kB/s)(5120KiB/5649msec) clat (msec): min=106, max=1206, avg=540.56, stdev=503.44 lat (msec): min=106, max=1206, avg=540.56, stdev=503.44 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 107], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 936], 80.00th=[ 936], 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= 1903, max= 6107, per=100.00%, avg=4005.00, stdev=2972.68, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1269KiB/s (1299kB/s)(7168KiB/5649msec); 0 zone resets clat (msec): min=94, max=1089, avg=393.70, stdev=388.20 lat (msec): min=94, max=1089, avg=393.79, stdev=388.20 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 129], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 211], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 785], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1630, max= 2043, per=37.70%, avg=1913.50, stdev=193.46, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 1000=16.67%, 2000=16.67% cpu : usr=0.02%, sys=3.72%, ctx=79, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3625KiB/s (3712kB/s), 385KiB/s-1961KiB/s (394kB/s-2008kB/s), io=20.0MiB (20.0MB), run=3656-5649msec WRITE: bw=5076KiB/s (5197kB/s), 1269KiB/s-1925KiB/s (1299kB/s-1971kB/s), io=28.0MiB (29.4MB), run=3656-5649msec 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=179274: Thu Aug 6 13:43:59 2026 read: IOPS=1, BW=4614KiB/s (4725kB/s)(12.0MiB/2663msec) clat (msec): min=446, max=1611, avg=839.36, stdev=668.77 lat (msec): min=446, max=1611, avg=839.37, stdev=668.77 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 6159, max= 8175, per=100.00%, avg=7167.00, stdev=1425.53, 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=3.23%, ctx=54, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179275: Thu Aug 6 13:43:59 2026 read: IOPS=0, BW=1196KiB/s (1225kB/s)(4096KiB/3424msec) clat (nsec): min=809032k, max=809032k, avg=809032160.00, stdev= 0.00 lat (nsec): min=809035k, max=809035k, avg=809034907.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] 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 write: IOPS=0, BW=2393KiB/s (2450kB/s)(8192KiB/3424msec); 0 zone resets clat (msec): min=1272, max=1277, avg=1275.10, stdev= 3.01 lat (msec): min=1273, max=1277, avg=1275.45, stdev= 3.06 clat percentiles (msec): | 1.00th=[ 1267], 5.00th=[ 1267], 10.00th=[ 1267], 20.00th=[ 1267], | 30.00th=[ 1267], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1284], | 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= 7892, max= 7892, per=85.50%, avg=7892.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.48%, ctx=39, 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=179276: Thu Aug 6 13:43:59 2026 write: IOPS=0, BW=3461KiB/s (3544kB/s)(12.0MiB/3550msec); 0 zone resets clat (msec): min=427, max=1545, avg=1117.60, stdev=603.71 lat (msec): min=427, max=1551, avg=1119.97, stdev=605.34 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8143, max= 8143, per=88.22%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.52%, ctx=71, 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=179277: Thu Aug 6 13:43:59 2026 write: IOPS=1, BW=4096KiB/s (4194kB/s)(12.0MiB/3000msec); 0 zone resets clat (msec): min=613, max=1489, avg=956.96, stdev=467.74 lat (msec): min=614, max=1490, avg=957.31, stdev=467.69 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 7876, max= 8175, per=86.95%, avg=8025.50, stdev=211.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.33%, ctx=51, 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=4785KiB/s (4900kB/s), 1196KiB/s-4614KiB/s (1225kB/s-4725kB/s), io=16.0MiB (16.8MB), run=2663-3424msec WRITE: bw=9230KiB/s (9452kB/s), 2393KiB/s-4096KiB/s (2450kB/s-4194kB/s), io=32.0MiB (33.6MB), run=3000-3550msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179279: Thu Aug 6 13:43:59 2026 read: IOPS=1, BW=4903KiB/s (5021kB/s)(12.0MiB/2506msec) clat (msec): min=630, max=876, avg=788.12, stdev=136.48 lat (msec): min=630, max=876, avg=788.12, stdev=136.48 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=12.81%, ctx=306, 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=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=179280: Thu Aug 6 13:43:59 2026 read: IOPS=0, BW=1107KiB/s (1134kB/s)(4096KiB/3699msec) clat (nsec): min=924600k, max=924600k, avg=924600455.00, stdev= 0.00 lat (nsec): min=924603k, max=924603k, avg=924603460.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 927], 5.00th=[ 927], 10.00th=[ 927], 20.00th=[ 927], | 30.00th=[ 927], 40.00th=[ 927], 50.00th=[ 927], 60.00th=[ 927], | 70.00th=[ 927], 80.00th=[ 927], 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= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2215KiB/s (2268kB/s)(8192KiB/3699msec); 0 zone resets clat (msec): min=908, max=1731, avg=1319.98, stdev=581.37 lat (msec): min=909, max=1733, avg=1321.34, stdev=582.86 clat percentiles (msec): | 1.00th=[ 911], 5.00th=[ 911], 10.00th=[ 911], 20.00th=[ 911], | 30.00th=[ 911], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 1737], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 8159, max= 8159, per=92.73%, avg=8159.00, 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=5.00%, ctx=85, 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=179281: Thu Aug 6 13:43:59 2026 write: IOPS=0, BW=3300KiB/s (3379kB/s)(12.0MiB/3724msec); 0 zone resets clat (msec): min=389, max=2001, avg=1203.09, stdev=806.01 lat (msec): min=390, max=2002, avg=1203.70, stdev=806.10 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 2005], 80.00th=[ 2005], 90.00th=[ 2005], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 8143, max= 8192, per=92.82%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.07%, ctx=33, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=179282: Thu Aug 6 13:43:59 2026 write: IOPS=0, BW=3617KiB/s (3704kB/s)(12.0MiB/3397msec); 0 zone resets clat (msec): min=204, max=2179, avg=1112.83, stdev=996.68 lat (msec): min=205, max=2179, avg=1113.78, stdev=996.50 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 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= 7984, max= 7984, per=90.74%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.09%, sys=3.71%, ctx=54, 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=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=4429KiB/s (4536kB/s), 1107KiB/s-4903KiB/s (1134kB/s-5021kB/s), io=16.0MiB (16.8MB), run=2506-3699msec WRITE: bw=8799KiB/s (9010kB/s), 2215KiB/s-3617KiB/s (2268kB/s-3704kB/s), io=32.0MiB (33.6MB), run=3397-3724msec