== sanity test 398b: DIO and buffer IO race ============== 06:17:24 (1787393844) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.83153 s, 10.4 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179752: Sat Aug 22 06:19:18 2026 read: IOPS=15, BW=61.7KiB/s (63.2kB/s)(5992KiB/97097msec) clat (usec): min=35, max=738383, avg=35395.69, stdev=29008.71 lat (usec): min=36, max=738384, avg=35397.30, stdev=29008.73 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 9503], 10.00th=[ 13698], 20.00th=[ 18482], | 30.00th=[ 22414], 40.00th=[ 26084], 50.00th=[ 29754], 60.00th=[ 34866], | 70.00th=[ 41681], 80.00th=[ 49546], 90.00th=[ 61080], 95.00th=[ 78119], | 99.00th=[111674], 99.50th=[130548], 99.90th=[270533], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 5, max= 118, per=24.80%, avg=61.26, stdev=20.76, samples=192 iops : min= 1, max= 29, avg=14.71, stdev= 5.20, samples=192 write: IOPS=16, BW=64.8KiB/s (66.4kB/s)(6296KiB/97097msec); 0 zone resets clat (usec): min=777, max=198650, avg=27703.66, stdev=26836.43 lat (usec): min=778, max=198652, avg=27706.69, stdev=26834.94 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1352], 10.00th=[ 1876], 20.00th=[ 3654], | 30.00th=[ 7504], 40.00th=[ 15270], 50.00th=[ 21103], 60.00th=[ 27657], | 70.00th=[ 34866], 80.00th=[ 47449], 90.00th=[ 65274], 95.00th=[ 81265], | 99.00th=[117965], 99.50th=[125305], 99.90th=[189793], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 7, max= 144, per=25.09%, avg=64.74, stdev=25.42, samples=191 iops : min= 1, max= 36, avg=15.57, stdev= 6.38, samples=191 lat (usec) : 50=0.42%, 100=1.17%, 250=0.23%, 1000=0.16% lat (msec) : 2=5.53%, 4=5.14%, 10=7.32%, 20=16.21%, 50=45.18% lat (msec) : 100=16.80%, 250=1.76%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=6.59%, ctx=6819, 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=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=179753: Sat Aug 22 06:19:18 2026 read: IOPS=15, BW=61.7KiB/s (63.2kB/s)(5940KiB/96249msec) clat (usec): min=34, max=232097, avg=34875.87, stdev=22522.92 lat (usec): min=34, max=232098, avg=34881.23, stdev=22526.43 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 9896], 10.00th=[ 13698], 20.00th=[ 17957], | 30.00th=[ 21627], 40.00th=[ 26084], 50.00th=[ 30540], 60.00th=[ 35914], | 70.00th=[ 41681], 80.00th=[ 49021], 90.00th=[ 61080], 95.00th=[ 74974], | 99.00th=[114820], 99.50th=[139461], 99.90th=[181404], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 5, max= 119, per=24.95%, avg=61.62, stdev=21.71, samples=189 iops : min= 1, max= 29, avg=14.78, stdev= 5.45, samples=189 write: IOPS=16, BW=65.0KiB/s (67.5kB/s)(6348KiB/96249msec); 0 zone resets clat (usec): min=834, max=724212, avg=27733.36, stdev=32339.03 lat (usec): min=835, max=724213, avg=27740.01, stdev=32336.60 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1319], 10.00th=[ 1663], 20.00th=[ 3425], | 30.00th=[ 6521], 40.00th=[ 14091], 50.00th=[ 20317], 60.00th=[ 26870], | 70.00th=[ 35390], 80.00th=[ 47973], 90.00th=[ 63701], 95.00th=[ 78119], | 99.00th=[113771], 99.50th=[137364], 99.90th=[291505], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 8, max= 151, per=25.31%, avg=65.30, stdev=25.32, samples=190 iops : min= 2, max= 37, avg=15.72, stdev= 6.30, samples=190 lat (usec) : 50=0.29%, 100=1.60%, 1000=0.16% lat (msec) : 2=6.84%, 4=4.79%, 10=6.80%, 20=17.42%, 50=43.78% lat (msec) : 100=16.50%, 250=1.76%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=6.72%, ctx=6634, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179754: Sat Aug 22 06:19:18 2026 read: IOPS=15, BW=63.1KiB/s (64.7kB/s)(6028KiB/95475msec) clat (usec): min=37, max=736193, avg=35473.32, stdev=29326.52 lat (usec): min=38, max=736194, avg=35476.27, stdev=29326.20 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10290], 10.00th=[ 13435], 20.00th=[ 18220], | 30.00th=[ 21627], 40.00th=[ 26084], 50.00th=[ 30540], 60.00th=[ 36439], | 70.00th=[ 41157], 80.00th=[ 49021], 90.00th=[ 61604], 95.00th=[ 73925], | 99.00th=[110625], 99.50th=[125305], 99.90th=[267387], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 5, max= 119, per=25.39%, avg=62.72, stdev=21.20, samples=188 iops : min= 1, max= 29, avg=15.07, stdev= 5.27, samples=188 write: IOPS=16, BW=65.6KiB/s (67.1kB/s)(6260KiB/95475msec); 0 zone resets clat (usec): min=896, max=227916, avg=26581.09, stdev=26703.74 lat (usec): min=897, max=227917, avg=26583.20, stdev=26703.51 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1352], 10.00th=[ 1795], 20.00th=[ 3490], | 30.00th=[ 6587], 40.00th=[ 12780], 50.00th=[ 20055], 60.00th=[ 26346], | 70.00th=[ 33424], 80.00th=[ 45351], 90.00th=[ 61604], 95.00th=[ 79168], | 99.00th=[120062], 99.50th=[126354], 99.90th=[177210], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 7, max= 134, per=25.16%, avg=64.92, stdev=25.50, samples=188 iops : min= 1, max= 33, avg=15.63, stdev= 6.40, samples=188 lat (usec) : 50=0.36%, 100=1.24%, 250=0.16%, 500=0.03%, 1000=0.07% lat (msec) : 2=6.02%, 4=5.44%, 10=7.36%, 20=17.15%, 50=44.24% lat (msec) : 100=15.95%, 250=1.89%, 500=0.07%, 750=0.03% cpu : usr=0.07%, sys=6.69%, ctx=6733, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179755: Sat Aug 22 06:19:18 2026 read: IOPS=15, BW=62.5KiB/s (63.0kB/s)(6052KiB/96859msec) clat (usec): min=38, max=827225, avg=35983.99, stdev=31159.48 lat (usec): min=39, max=827226, avg=35985.91, stdev=31159.49 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11076], 10.00th=[ 14746], 20.00th=[ 18482], | 30.00th=[ 22152], 40.00th=[ 26084], 50.00th=[ 30802], 60.00th=[ 35390], | 70.00th=[ 41157], 80.00th=[ 49021], 90.00th=[ 62129], 95.00th=[ 76022], | 99.00th=[123208], 99.50th=[152044], 99.90th=[295699], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 7, max= 111, per=25.21%, avg=62.27, stdev=19.79, samples=190 iops : min= 1, max= 27, avg=14.96, stdev= 4.94, samples=190 write: IOPS=16, BW=64.4KiB/s (65.9kB/s)(6236KiB/96859msec); 0 zone resets clat (usec): min=773, max=208405, avg=26928.59, stdev=26467.33 lat (usec): min=774, max=208407, avg=26932.10, stdev=26466.75 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1336], 10.00th=[ 1565], 20.00th=[ 3326], | 30.00th=[ 6718], 40.00th=[ 13566], 50.00th=[ 20317], 60.00th=[ 26608], | 70.00th=[ 35390], 80.00th=[ 46400], 90.00th=[ 63701], 95.00th=[ 76022], | 99.00th=[108528], 99.50th=[127402], 99.90th=[185598], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 15, max= 134, per=24.84%, avg=64.10, stdev=24.68, samples=190 iops : min= 3, max= 33, avg=15.42, stdev= 6.19, samples=190 lat (usec) : 50=0.20%, 100=1.40%, 250=0.10%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=6.93%, 4=4.59%, 10=6.80%, 20=16.63%, 50=44.76% lat (msec) : 100=16.57%, 250=1.86%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=6.44%, ctx=6660, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=247KiB/s (253kB/s), 61.7KiB/s-63.1KiB/s (63.2kB/s-64.7kB/s), io=23.4MiB (24.6MB), run=95475-97097msec WRITE: bw=259KiB/s (265kB/s), 64.4KiB/s-65.0KiB/s (65.9kB/s-67.5kB/s), io=24.6MiB (25.7MB), run=95475-97097msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179757: Sat Aug 22 06:19:48 2026 read: IOPS=11, BW=47.1KiB/s (48.2kB/s)(5992KiB/127208msec) clat (msec): min=4, max=742, avg=33.85, stdev=34.54 lat (msec): min=4, max=742, avg=33.85, stdev=34.54 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 48], 90.00th=[ 73], 95.00th=[ 96], | 99.00th=[ 142], 99.50th=[ 165], 99.90th=[ 230], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 174, per=25.21%, avg=47.40, stdev=31.09, samples=248 iops : min= 1, max= 43, avg=11.23, stdev= 7.82, samples=248 write: IOPS=12, BW=49.5KiB/s (50.7kB/s)(6296KiB/127208msec); 0 zone resets clat (msec): min=9, max=326, avg=48.38, stdev=33.28 lat (msec): min=9, max=326, avg=48.38, stdev=33.28 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 38], 60.00th=[ 46], | 70.00th=[ 57], 80.00th=[ 73], 90.00th=[ 92], 95.00th=[ 110], | 99.00th=[ 161], 99.50th=[ 190], 99.90th=[ 257], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 7, max= 152, per=25.20%, avg=49.39, stdev=29.37, samples=250 iops : min= 1, max= 38, avg=11.73, stdev= 7.37, samples=250 lat (msec) : 10=4.82%, 20=23.21%, 50=44.08%, 100=22.07%, 250=5.70% lat (msec) : 500=0.10%, 750=0.03% cpu : usr=0.06%, sys=2.68%, ctx=5087, 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=179758: Sat Aug 22 06:19:48 2026 read: IOPS=11, BW=46.6KiB/s (47.8kB/s)(5940KiB/127339msec) clat (msec): min=4, max=855, avg=32.16, stdev=34.38 lat (msec): min=4, max=855, avg=32.16, stdev=34.38 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 47], 90.00th=[ 68], 95.00th=[ 87], | 99.00th=[ 142], 99.50th=[ 171], 99.90th=[ 190], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7, max= 183, per=24.92%, avg=46.85, stdev=32.00, samples=248 iops : min= 1, max= 45, avg=11.10, stdev= 8.04, samples=248 write: IOPS=12, BW=49.9KiB/s (51.0kB/s)(6348KiB/127339msec); 0 zone resets clat (msec): min=7, max=305, avg=49.92, stdev=36.19 lat (msec): min=7, max=305, avg=49.92, stdev=36.19 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 40], 60.00th=[ 47], | 70.00th=[ 58], 80.00th=[ 73], 90.00th=[ 96], 95.00th=[ 116], | 99.00th=[ 192], 99.50th=[ 228], 99.90th=[ 288], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 7, max= 160, per=25.32%, avg=49.64, stdev=29.46, samples=250 iops : min= 1, max= 40, avg=11.80, stdev= 7.39, samples=250 lat (msec) : 10=5.47%, 20=23.05%, 50=44.04%, 100=21.32%, 250=5.96% lat (msec) : 500=0.13%, 1000=0.03% cpu : usr=0.05%, sys=2.67%, ctx=5036, 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=179759: Sat Aug 22 06:19:48 2026 read: IOPS=11, BW=47.3KiB/s (48.5kB/s)(6028KiB/127391msec) clat (msec): min=5, max=218, avg=33.30, stdev=28.34 lat (msec): min=5, max=218, avg=33.30, stdev=28.34 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 72], 95.00th=[ 93], | 99.00th=[ 133], 99.50th=[ 150], 99.90th=[ 199], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 7, max= 151, per=25.26%, avg=47.48, stdev=30.13, samples=248 iops : min= 1, max= 37, avg=11.25, stdev= 7.57, samples=248 write: IOPS=12, BW=49.1KiB/s (50.3kB/s)(6260KiB/127391msec); 0 zone resets clat (msec): min=8, max=890, avg=49.11, stdev=40.39 lat (msec): min=8, max=890, avg=49.11, stdev=40.39 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 38], 60.00th=[ 47], | 70.00th=[ 59], 80.00th=[ 72], 90.00th=[ 95], 95.00th=[ 111], | 99.00th=[ 169], 99.50th=[ 230], 99.90th=[ 321], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 7, max= 159, per=24.96%, avg=48.93, stdev=30.23, samples=250 iops : min= 1, max= 39, avg=11.62, stdev= 7.59, samples=250 lat (msec) : 10=5.47%, 20=22.62%, 50=44.34%, 100=21.45%, 250=5.92% lat (msec) : 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=2.70%, ctx=5057, 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=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=179760: Sat Aug 22 06:19:48 2026 read: IOPS=11, BW=47.4KiB/s (48.5kB/s)(6052KiB/127671msec) clat (msec): min=4, max=213, avg=32.83, stdev=27.68 lat (msec): min=4, max=213, avg=32.83, stdev=27.68 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 72], 95.00th=[ 90], | 99.00th=[ 138], 99.50th=[ 153], 99.90th=[ 188], 99.95th=[ 213], | 99.99th=[ 213] bw ( KiB/s): min= 7, max= 182, per=25.37%, avg=47.69, stdev=31.04, samples=249 iops : min= 1, max= 45, avg=11.31, stdev= 7.80, samples=249 write: IOPS=12, BW=48.8KiB/s (50.0kB/s)(6236KiB/127671msec); 0 zone resets clat (msec): min=8, max=879, avg=49.81, stdev=40.86 lat (msec): min=8, max=879, avg=49.81, stdev=40.86 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 39], 60.00th=[ 49], | 70.00th=[ 59], 80.00th=[ 73], 90.00th=[ 93], 95.00th=[ 111], | 99.00th=[ 171], 99.50th=[ 243], 99.90th=[ 330], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 167, per=24.87%, avg=48.74, stdev=29.53, samples=251 iops : min= 1, max= 41, avg=11.57, stdev= 7.40, samples=251 lat (msec) : 10=4.75%, 20=23.24%, 50=43.03%, 100=23.47%, 250=5.31% lat (msec) : 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=2.66%, ctx=5006, 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=188KiB/s (193kB/s), 46.6KiB/s-47.4KiB/s (47.8kB/s-48.5kB/s), io=23.4MiB (24.6MB), run=127208-127671msec WRITE: bw=197KiB/s (202kB/s), 48.8KiB/s-49.9KiB/s (50.0kB/s-51.0kB/s), io=24.6MiB (25.7MB), run=127208-127671msec 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=179796: Sat Aug 22 06:20:23 2026 read: IOPS=15, BW=241KiB/s (247kB/s)(5920KiB/24519msec) clat (usec): min=51, max=140506, avg=36828.83, stdev=23567.63 lat (usec): min=52, max=140506, avg=36830.14, stdev=23567.74 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 63], 10.00th=[ 141], 20.00th=[ 19530], | 30.00th=[ 25035], 40.00th=[ 29492], 50.00th=[ 34341], 60.00th=[ 40109], | 70.00th=[ 45876], 80.00th=[ 53216], 90.00th=[ 64226], 95.00th=[ 73925], | 99.00th=[123208], 99.50th=[137364], 99.90th=[139461], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 94, max= 470, per=25.94%, avg=240.23, stdev=73.57, samples=48 iops : min= 5, max= 29, avg=14.33, stdev= 4.71, samples=48 write: IOPS=16, BW=260KiB/s (266kB/s)(6368KiB/24519msec); 0 zone resets clat (usec): min=1706, max=143328, avg=26711.75, stdev=25621.46 lat (usec): min=1709, max=143330, avg=26713.65, stdev=25621.51 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 1958], 10.00th=[ 2900], 20.00th=[ 4621], | 30.00th=[ 6980], 40.00th=[ 11731], 50.00th=[ 19268], 60.00th=[ 27919], | 70.00th=[ 35390], 80.00th=[ 46924], 90.00th=[ 62653], 95.00th=[ 77071], | 99.00th=[111674], 99.50th=[124257], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 94, max= 472, per=26.71%, avg=260.19, stdev=83.73, samples=48 iops : min= 5, max= 29, avg=15.60, stdev= 5.23, samples=48 lat (usec) : 100=4.56%, 250=0.39%, 750=0.13% lat (msec) : 2=2.99%, 4=5.99%, 10=11.33%, 20=11.20%, 50=42.32% lat (msec) : 100=19.14%, 250=1.95% cpu : usr=0.08%, sys=7.30%, ctx=1616, 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=179797: Sat Aug 22 06:20:23 2026 read: IOPS=13, BW=223KiB/s (229kB/s)(5744KiB/25702msec) clat (usec): min=41, max=147641, avg=36934.18, stdev=22446.61 lat (usec): min=41, max=147641, avg=36935.27, stdev=22446.60 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 80], 10.00th=[ 12387], 20.00th=[ 20579], | 30.00th=[ 25035], 40.00th=[ 29230], 50.00th=[ 34341], 60.00th=[ 39060], | 70.00th=[ 45876], 80.00th=[ 52167], 90.00th=[ 62129], 95.00th=[ 80217], | 99.00th=[110625], 99.50th=[124257], 99.90th=[147850], 99.95th=[147850], | 99.99th=[147850] bw ( KiB/s): min= 29, max= 401, per=23.89%, avg=221.26, stdev=89.66, samples=50 iops : min= 1, max= 25, avg=13.14, stdev= 5.67, samples=50 write: IOPS=15, BW=255KiB/s (261kB/s)(6544KiB/25702msec); 0 zone resets clat (usec): min=1340, max=160617, avg=29765.13, stdev=27801.76 lat (usec): min=1341, max=160619, avg=29767.11, stdev=27801.65 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2073], 10.00th=[ 2900], 20.00th=[ 5080], | 30.00th=[ 10028], 40.00th=[ 16581], 50.00th=[ 22414], 60.00th=[ 29754], | 70.00th=[ 36439], 80.00th=[ 49546], 90.00th=[ 69731], 95.00th=[ 86508], | 99.00th=[125305], 99.50th=[137364], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 63, max= 412, per=25.58%, avg=249.16, stdev=84.52, samples=50 iops : min= 3, max= 25, avg=14.90, stdev= 5.29, samples=50 lat (usec) : 50=0.13%, 100=2.86%, 250=0.26%, 750=0.13% lat (msec) : 2=2.60%, 4=6.51%, 10=7.81%, 20=13.80%, 50=44.27% lat (msec) : 100=19.66%, 250=1.95% cpu : usr=0.09%, sys=7.19%, ctx=1726, 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=179798: Sat Aug 22 06:20:23 2026 read: IOPS=15, BW=242KiB/s (248kB/s)(6256KiB/25858msec) clat (usec): min=37, max=142394, avg=38551.37, stdev=24343.97 lat (usec): min=38, max=142395, avg=38552.64, stdev=24344.08 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 14615], 20.00th=[ 20841], | 30.00th=[ 26084], 40.00th=[ 29754], 50.00th=[ 34341], 60.00th=[ 39060], | 70.00th=[ 45876], 80.00th=[ 56886], 90.00th=[ 71828], 95.00th=[ 83362], | 99.00th=[121111], 99.50th=[135267], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 93, max= 412, per=26.11%, avg=241.82, stdev=84.34, samples=51 iops : min= 5, max= 25, avg=14.43, stdev= 5.30, samples=51 write: IOPS=14, BW=233KiB/s (239kB/s)(6032KiB/25858msec); 0 zone resets clat (usec): min=1455, max=143885, avg=28446.43, stdev=28260.11 lat (usec): min=1456, max=143888, avg=28454.34, stdev=28265.85 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1926], 10.00th=[ 2704], 20.00th=[ 4817], | 30.00th=[ 7635], 40.00th=[ 13173], 50.00th=[ 18744], 60.00th=[ 26608], | 70.00th=[ 34866], 80.00th=[ 47449], 90.00th=[ 67634], 95.00th=[ 87557], | 99.00th=[126354], 99.50th=[143655], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 62, max= 445, per=23.55%, avg=229.33, stdev=83.94, samples=51 iops : min= 3, max= 27, avg=13.65, stdev= 5.29, samples=51 lat (usec) : 50=0.26%, 100=3.65%, 250=0.26% lat (msec) : 2=2.86%, 4=4.82%, 10=8.85%, 20=13.93%, 50=42.84% lat (msec) : 100=20.05%, 250=2.47% cpu : usr=0.08%, sys=7.11%, ctx=1668, 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=179799: Sat Aug 22 06:20:23 2026 read: IOPS=15, BW=242KiB/s (248kB/s)(6032KiB/24950msec) clat (usec): min=36, max=170797, avg=36613.51, stdev=25107.58 lat (usec): min=37, max=170799, avg=36614.57, stdev=25107.55 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 61], 10.00th=[ 74], 20.00th=[ 18744], | 30.00th=[ 25035], 40.00th=[ 28967], 50.00th=[ 33162], 60.00th=[ 38536], | 70.00th=[ 45876], 80.00th=[ 54789], 90.00th=[ 65799], 95.00th=[ 79168], | 99.00th=[128451], 99.50th=[149947], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 30, max= 415, per=26.00%, avg=240.73, stdev=86.66, samples=49 iops : min= 1, max= 25, avg=14.37, stdev= 5.46, samples=49 write: IOPS=15, BW=251KiB/s (257kB/s)(6256KiB/24950msec); 0 zone resets clat (usec): min=1463, max=185179, avg=27980.13, stdev=28394.82 lat (usec): min=1464, max=185180, avg=27982.37, stdev=28394.89 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2008], 10.00th=[ 2933], 20.00th=[ 4948], | 30.00th=[ 7832], 40.00th=[ 13042], 50.00th=[ 18220], 60.00th=[ 25822], | 70.00th=[ 35390], 80.00th=[ 47973], 90.00th=[ 65799], 95.00th=[ 85459], | 99.00th=[130548], 99.50th=[139461], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 95, max= 440, per=25.90%, avg=252.24, stdev=82.29, samples=49 iops : min= 5, max= 27, avg=15.10, stdev= 5.29, samples=49 lat (usec) : 50=0.91%, 100=4.56%, 250=0.65%, 750=0.13% lat (msec) : 2=2.34%, 4=5.99%, 10=9.77%, 20=12.63%, 50=41.67% lat (msec) : 100=19.01%, 250=2.34% cpu : usr=0.06%, sys=6.99%, ctx=1621, 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=926KiB/s (949kB/s), 223KiB/s-242KiB/s (229kB/s-248kB/s), io=23.4MiB (24.5MB), run=24519-25858msec WRITE: bw=975KiB/s (998kB/s), 233KiB/s-260KiB/s (239kB/s-266kB/s), io=24.6MiB (25.8MB), run=24519-25858msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179800: Sat Aug 22 06:20:33 2026 read: IOPS=10, BW=164KiB/s (168kB/s)(5920KiB/36138msec) clat (msec): min=5, max=167, avg=36.00, stdev=28.32 lat (msec): min=5, max=167, avg=36.00, stdev=28.32 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 53], 90.00th=[ 79], 95.00th=[ 104], | 99.00th=[ 129], 99.50th=[ 138], 99.90th=[ 169], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 63, max= 510, per=24.28%, avg=160.72, stdev=92.30, samples=71 iops : min= 3, max= 31, avg= 9.25, stdev= 5.78, samples=71 write: IOPS=11, BW=176KiB/s (180kB/s)(6368KiB/36138msec); 0 zone resets clat (msec): min=13, max=237, avg=56.48, stdev=36.82 lat (msec): min=13, max=237, avg=56.48, stdev=36.82 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 54], | 70.00th=[ 65], 80.00th=[ 82], 90.00th=[ 109], 95.00th=[ 136], | 99.00th=[ 169], 99.50th=[ 222], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 29, max= 471, per=25.06%, avg=174.65, stdev=97.41, samples=71 iops : min= 1, max= 29, avg=10.13, stdev= 6.14, samples=71 lat (msec) : 10=1.95%, 20=17.97%, 50=46.88%, 100=23.31%, 250=9.90% cpu : usr=0.05%, sys=2.43%, ctx=1310, 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=179801: Sat Aug 22 06:20:33 2026 read: IOPS=10, BW=160KiB/s (164kB/s)(5744KiB/35880msec) clat (msec): min=6, max=163, avg=38.29, stdev=31.04 lat (msec): min=6, max=163, avg=38.29, stdev=31.04 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 57], 90.00th=[ 84], 95.00th=[ 118], | 99.00th=[ 138], 99.50th=[ 157], 99.90th=[ 163], 99.95th=[ 163], | 99.99th=[ 163] bw ( KiB/s): min= 29, max= 606, per=24.93%, avg=165.01, stdev=105.92, samples=69 iops : min= 1, max= 37, avg= 9.52, stdev= 6.65, samples=69 write: IOPS=11, BW=182KiB/s (187kB/s)(6544KiB/35880msec); 0 zone resets clat (msec): min=11, max=277, avg=53.85, stdev=35.68 lat (msec): min=11, max=277, avg=53.85, stdev=35.68 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 51], | 70.00th=[ 61], 80.00th=[ 75], 90.00th=[ 111], 95.00th=[ 129], | 99.00th=[ 163], 99.50th=[ 174], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 534, per=26.07%, avg=181.72, stdev=101.95, samples=71 iops : min= 1, max= 33, avg=10.58, stdev= 6.38, samples=71 lat (msec) : 10=1.43%, 20=20.18%, 50=45.57%, 100=23.31%, 250=9.38% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.69%, ctx=1307, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179802: Sat Aug 22 06:20:33 2026 read: IOPS=10, BW=175KiB/s (179kB/s)(6256KiB/35694msec) clat (msec): min=6, max=188, avg=36.95, stdev=30.45 lat (msec): min=6, max=188, avg=36.95, stdev=30.45 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 55], 90.00th=[ 81], 95.00th=[ 104], | 99.00th=[ 146], 99.50th=[ 178], 99.90th=[ 190], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 63, max= 542, per=26.95%, avg=178.41, stdev=103.11, samples=69 iops : min= 3, max= 33, avg=10.36, stdev= 6.45, samples=69 write: IOPS=10, BW=169KiB/s (173kB/s)(6032KiB/35694msec); 0 zone resets clat (msec): min=10, max=286, avg=55.68, stdev=33.42 lat (msec): min=10, max=286, avg=55.68, stdev=33.42 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 50], 60.00th=[ 57], | 70.00th=[ 66], 80.00th=[ 80], 90.00th=[ 104], 95.00th=[ 115], | 99.00th=[ 163], 99.50th=[ 199], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 31, max= 510, per=23.90%, avg=166.57, stdev=89.10, samples=70 iops : min= 1, max= 31, avg= 9.63, stdev= 5.61, samples=70 lat (msec) : 10=2.86%, 20=16.54%, 50=44.14%, 100=28.13%, 250=8.20% lat (msec) : 500=0.13% cpu : usr=0.04%, sys=2.68%, ctx=1240, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179803: Sat Aug 22 06:20:33 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(6032KiB/35614msec) clat (msec): min=5, max=163, avg=36.83, stdev=30.01 lat (msec): min=5, max=163, avg=36.83, stdev=30.01 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 85], 95.00th=[ 102], | 99.00th=[ 150], 99.50th=[ 161], 99.90th=[ 163], 99.95th=[ 163], | 99.99th=[ 163] bw ( KiB/s): min= 30, max= 565, per=25.24%, avg=167.11, stdev=99.82, samples=70 iops : min= 1, max= 35, avg= 9.66, stdev= 6.32, samples=70 write: IOPS=10, BW=176KiB/s (180kB/s)(6256KiB/35614msec); 0 zone resets clat (msec): min=11, max=258, avg=54.75, stdev=37.27 lat (msec): min=11, max=258, avg=54.75, stdev=37.27 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 32], 40.00th=[ 36], 50.00th=[ 43], 60.00th=[ 52], | 70.00th=[ 63], 80.00th=[ 80], 90.00th=[ 108], 95.00th=[ 130], | 99.00th=[ 180], 99.50th=[ 226], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 31, max= 574, per=25.08%, avg=174.80, stdev=103.48, samples=70 iops : min= 1, max= 35, avg=10.14, stdev= 6.50, samples=70 lat (msec) : 10=3.39%, 20=16.67%, 50=49.22%, 100=21.88%, 250=8.72% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.70%, ctx=1317, 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=663KiB/s (679kB/s), 160KiB/s-175KiB/s (164kB/s-179kB/s), io=23.4MiB (24.5MB), run=35614-36138msec WRITE: bw=697KiB/s (714kB/s), 169KiB/s-182KiB/s (173kB/s-187kB/s), io=24.6MiB (25.8MB), run=35614-36138msec 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=179815: Sat Aug 22 06:20:47 2026 read: IOPS=2, BW=2196KiB/s (2249kB/s)(7168KiB/3264msec) clat (usec): min=685, max=371662, avg=209187.47, stdev=112443.26 lat (usec): min=687, max=371663, avg=209188.92, stdev=112443.22 clat percentiles (usec): | 1.00th=[ 685], 5.00th=[ 685], 10.00th=[ 685], 20.00th=[166724], | 30.00th=[206570], 40.00th=[206570], 50.00th=[208667], 60.00th=[248513], | 70.00th=[248513], 80.00th=[261096], 90.00th=[371196], 95.00th=[371196], | 99.00th=[371196], 99.50th=[371196], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 1961, max= 4039, per=54.58%, avg=2908.50, stdev=1072.91, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1569KiB/s (1606kB/s)(5120KiB/3264msec); 0 zone resets clat (msec): min=121, max=546, avg=353.52, stdev=174.80 lat (msec): min=121, max=546, avg=353.63, stdev=174.79 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 122], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1961, max= 3893, per=35.16%, avg=2623.00, stdev=1100.18, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=16.70%, ctx=239, 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=179816: Sat Aug 22 06:20:47 2026 read: IOPS=0, BW=540KiB/s (552kB/s)(2048KiB/3796msec) clat (usec): min=614, max=156603, avg=78609.02, stdev=110300.79 lat (usec): min=615, max=156605, avg=78610.86, stdev=110301.42 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 619], 10.00th=[ 619], 20.00th=[ 619], | 30.00th=[ 619], 40.00th=[ 619], 50.00th=[ 619], 60.00th=[156238], | 70.00th=[156238], 80.00th=[156238], 90.00th=[156238], 95.00th=[156238], | 99.00th=[156238], 99.50th=[156238], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 1729, max= 1961, per=34.62%, avg=1845.00, stdev=164.05, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2698KiB/s (2762kB/s)(10.0MiB/3796msec); 0 zone resets clat (msec): min=98, max=1035, avg=351.19, stdev=274.84 lat (msec): min=98, max=1036, avg=351.82, stdev=274.55 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 118], | 30.00th=[ 182], 40.00th=[ 201], 50.00th=[ 253], 60.00th=[ 338], | 70.00th=[ 372], 80.00th=[ 401], 90.00th=[ 518], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 2019, max= 6131, per=48.60%, avg=3625.40, stdev=1708.75, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.03%, sys=15.13%, ctx=119, 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=179817: Sat Aug 22 06:20:47 2026 read: IOPS=1, BW=1599KiB/s (1637kB/s)(6144KiB/3843msec) clat (usec): min=570, max=564582, avg=159699.21, stdev=219962.26 lat (usec): min=570, max=564583, avg=159700.26, stdev=219962.40 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 1565], | 30.00th=[ 1565], 40.00th=[ 4555], 50.00th=[ 4555], 60.00th=[168821], | 70.00th=[219153], 80.00th=[219153], 90.00th=[566232], 95.00th=[566232], | 99.00th=[566232], 99.50th=[566232], 99.90th=[566232], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 1946, max= 4087, per=46.97%, avg=2503.25, stdev=1056.30, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1599KiB/s (1637kB/s)(6144KiB/3843msec); 0 zone resets clat (msec): min=224, max=1434, avg=475.80, stdev=470.77 lat (msec): min=224, max=1434, avg=475.87, stdev=470.78 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 305], | 70.00th=[ 330], 80.00th=[ 330], 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= 1709, max= 2043, per=26.15%, avg=1951.00, stdev=138.69, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 10=8.33%, 250=25.00%, 500=33.33%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=11.09%, ctx=111, 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=179818: Sat Aug 22 06:20:47 2026 read: IOPS=1, BW=1558KiB/s (1596kB/s)(5120KiB/3286msec) clat (usec): min=404, max=212155, avg=107993.88, stdev=100514.28 lat (usec): min=406, max=212156, avg=107994.99, stdev=100514.44 clat percentiles (usec): | 1.00th=[ 404], 5.00th=[ 404], 10.00th=[ 404], 20.00th=[ 404], | 30.00th=[ 963], 40.00th=[ 963], 50.00th=[147850], 60.00th=[147850], | 70.00th=[177210], 80.00th=[177210], 90.00th=[212861], 95.00th=[212861], | 99.00th=[212861], 99.50th=[212861], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 7787, max= 7787, per=100.00%, avg=7787.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2181KiB/s (2234kB/s)(7168KiB/3286msec); 0 zone resets clat (msec): min=166, max=792, avg=379.08, stdev=216.02 lat (msec): min=166, max=793, avg=379.27, stdev=216.27 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 192], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 397], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 464], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1741, max= 4039, per=39.27%, avg=2929.50, stdev=1220.23, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33%, 1000=8.33% lat (msec) : 250=50.00%, 500=25.00%, 1000=8.33% cpu : usr=0.09%, sys=16.86%, ctx=141, 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=5329KiB/s (5457kB/s), 540KiB/s-2196KiB/s (552kB/s-2249kB/s), io=20.0MiB (20.0MB), run=3264-3843msec WRITE: bw=7461KiB/s (7640kB/s), 1569KiB/s-2698KiB/s (1606kB/s-2762kB/s), io=28.0MiB (29.4MB), run=3264-3843msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179820: Sat Aug 22 06:20:48 2026 read: IOPS=1, BW=1513KiB/s (1549kB/s)(7168KiB/4738msec) clat (msec): min=90, max=1198, avg=461.31, stdev=409.92 lat (msec): min=90, max=1198, avg=461.31, stdev=409.91 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 93], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 359], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 676], 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= 1741, max= 4096, per=56.42%, avg=2370.20, stdev=971.60, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 write: IOPS=1, BW=1081KiB/s (1107kB/s)(5120KiB/4738msec); 0 zone resets clat (msec): min=133, max=482, avg=283.41, stdev=151.23 lat (msec): min=133, max=482, avg=283.84, stdev=151.50 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 134], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 1799, max= 5953, per=55.47%, avg=3262.33, stdev=2333.17, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 100=16.67%, 250=25.00%, 500=33.33%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=5.00%, ctx=84, 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=179821: Sat Aug 22 06:20:48 2026 read: IOPS=0, BW=449KiB/s (459kB/s)(2048KiB/4565msec) clat (msec): min=77, max=426, avg=252.07, stdev=246.97 lat (msec): min=77, max=426, avg=252.07, stdev=246.97 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 78], | 30.00th=[ 78], 40.00th=[ 78], 50.00th=[ 78], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 1988, max= 2048, per=48.04%, avg=2018.00, stdev=42.43, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2243KiB/s (2297kB/s)(10.0MiB/4565msec); 0 zone resets clat (msec): min=71, max=709, avg=353.32, stdev=225.86 lat (msec): min=71, max=709, avg=353.56, stdev=226.04 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 114], | 30.00th=[ 178], 40.00th=[ 184], 50.00th=[ 234], 60.00th=[ 401], | 70.00th=[ 493], 80.00th=[ 575], 90.00th=[ 584], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1799, max= 4096, per=47.38%, avg=2786.60, stdev=1155.55, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=25.00% cpu : usr=0.02%, sys=4.34%, ctx=101, 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=179822: Sat Aug 22 06:20:48 2026 read: IOPS=1, BW=1347KiB/s (1379kB/s)(6144KiB/4562msec) clat (msec): min=51, max=340, avg=183.18, stdev=103.65 lat (msec): min=51, max=340, avg=183.18, stdev=103.65 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 52], 10.00th=[ 52], 20.00th=[ 112], | 30.00th=[ 112], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 211], | 70.00th=[ 245], 80.00th=[ 245], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 4071, max= 4096, per=97.20%, avg=4083.50, stdev=17.68, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1347KiB/s (1379kB/s)(6144KiB/4562msec); 0 zone resets clat (msec): min=73, max=1584, avg=494.93, stdev=571.27 lat (msec): min=73, max=1584, avg=495.01, stdev=571.28 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 84], | 30.00th=[ 84], 40.00th=[ 192], 50.00th=[ 192], 60.00th=[ 472], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 1799, max= 2048, per=33.31%, avg=1958.75, stdev=109.61, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=25.00%, 250=41.67%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.32%, ctx=93, 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=179823: Sat Aug 22 06:20:48 2026 read: IOPS=1, BW=1050KiB/s (1075kB/s)(5120KiB/4875msec) clat (msec): min=50, max=364, avg=175.64, stdev=138.32 lat (msec): min=50, max=364, avg=175.64, stdev=138.32 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 51], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 104], 60.00th=[ 104], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1984, max= 4071, per=64.29%, avg=2701.00, stdev=1186.89, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1470KiB/s (1506kB/s)(7168KiB/4875msec); 0 zone resets clat (msec): min=91, max=1317, avg=499.34, stdev=497.54 lat (msec): min=91, max=1317, avg=499.50, stdev=497.66 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 96], | 30.00th=[ 220], 40.00th=[ 220], 50.00th=[ 226], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 1083], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 1984, max= 4096, per=42.81%, avg=2517.75, stdev=1052.20, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 100=33.33%, 250=25.00%, 500=25.00%, 2000=16.67% cpu : usr=0.00%, sys=4.25%, ctx=131, 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=4201KiB/s (4302kB/s), 449KiB/s-1513KiB/s (459kB/s-1549kB/s), io=20.0MiB (20.0MB), run=4562-4875msec WRITE: bw=5881KiB/s (6023kB/s), 1081KiB/s-2243KiB/s (1107kB/s-2297kB/s), io=28.0MiB (29.4MB), run=4562-4875msec 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=179831: Sat Aug 22 06:21:03 2026 read: IOPS=1, BW=5545KiB/s (5678kB/s)(12.0MiB/2216msec) clat (msec): min=682, max=748, avg=709.40, stdev=34.75 lat (msec): min=682, max=748, avg=709.40, stdev=34.75 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7846, max= 8143, per=100.00%, avg=7994.50, stdev=210.01, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=16.34%, ctx=594, 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=179832: Sat Aug 22 06:21:03 2026 read: IOPS=0, BW=1534KiB/s (1570kB/s)(4096KiB/2671msec) clat (nsec): min=608396k, max=608396k, avg=608396498.00, stdev= 0.00 lat (nsec): min=608400k, max=608400k, avg=608399733.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 7846, max= 7846, per=100.00%, avg=7846.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3067KiB/s (3141kB/s)(8192KiB/2671msec); 0 zone resets clat (msec): min=794, max=1152, avg=973.34, stdev=252.95 lat (msec): min=794, max=1152, avg=973.82, stdev=253.11 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 1150], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8110, max= 8110, per=66.11%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.76%, ctx=103, 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=179833: Sat Aug 22 06:21:03 2026 write: IOPS=1, BW=7557KiB/s (7739kB/s)(12.0MiB/1626msec); 0 zone resets clat (msec): min=280, max=904, avg=508.05, stdev=344.32 lat (msec): min=280, max=905, avg=509.38, stdev=344.01 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7123, max= 8110, per=62.08%, avg=7616.50, stdev=697.91, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=7.51%, ctx=52, 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=179836: Sat Aug 22 06:21:03 2026 write: IOPS=1, BW=5750KiB/s (5888kB/s)(12.0MiB/2137msec); 0 zone resets clat (msec): min=223, max=922, avg=686.21, stdev=401.17 lat (msec): min=223, max=924, avg=687.36, stdev=401.67 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 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= 6627, max= 8143, per=60.20%, avg=7385.00, stdev=1071.97, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.00%, sys=5.57%, ctx=66, 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=6134KiB/s (6281kB/s), 1534KiB/s-5545KiB/s (1570kB/s-5678kB/s), io=16.0MiB (16.8MB), run=2216-2671msec WRITE: bw=11.0MiB/s (12.6MB/s), 3067KiB/s-7557KiB/s (3141kB/s-7739kB/s), io=32.0MiB (33.6MB), run=1626-2671msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179830: Sat Aug 22 06:21:03 2026 read: IOPS=1, BW=5040KiB/s (5161kB/s)(12.0MiB/2438msec) clat (msec): min=199, max=1528, avg=772.30, stdev=683.34 lat (msec): min=199, max=1528, avg=772.30, stdev=683.34 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] 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) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.06%, ctx=52, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179834: Sat Aug 22 06:21:03 2026 read: IOPS=0, BW=1468KiB/s (1503kB/s)(4096KiB/2791msec) clat (nsec): min=1112.4M, max=1112.4M, avg=1112377956.00, stdev= 0.00 lat (nsec): min=1112.4M, max=1112.4M, avg=1112380916.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 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=2935KiB/s (3006kB/s)(8192KiB/2791msec); 0 zone resets clat (msec): min=528, max=1085, avg=806.90, stdev=393.50 lat (msec): min=528, max=1086, avg=807.88, stdev=394.39 clat percentiles (msec): | 1.00th=[ 531], 5.00th=[ 531], 10.00th=[ 531], 20.00th=[ 531], | 30.00th=[ 531], 40.00th=[ 531], 50.00th=[ 531], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1083], 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= 8094, max= 8094, per=68.94%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.52%, ctx=49, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179835: Sat Aug 22 06:21:03 2026 write: IOPS=1, BW=4468KiB/s (4576kB/s)(12.0MiB/2750msec); 0 zone resets clat (msec): min=275, max=1837, avg=897.33, stdev=828.01 lat (msec): min=276, max=1839, avg=898.38, stdev=829.28 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 1838], 80.00th=[ 1838], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 8094, max= 8175, per=69.29%, avg=8134.50, stdev=57.28, 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=5.06%, ctx=65, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179837: Sat Aug 22 06:21:03 2026 write: IOPS=1, BW=4676KiB/s (4788kB/s)(12.0MiB/2628msec); 0 zone resets clat (msec): min=239, max=1562, avg=832.52, stdev=672.09 lat (msec): min=239, max=1564, avg=833.96, stdev=672.82 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8094, max= 8159, per=69.22%, avg=8126.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.42%, ctx=59, 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 Run status group 0 (all jobs): READ: bw=5870KiB/s (6011kB/s), 1468KiB/s-5040KiB/s (1503kB/s-5161kB/s), io=16.0MiB (16.8MB), run=2438-2791msec WRITE: bw=11.5MiB/s (12.0MB/s), 2935KiB/s-4676KiB/s (3006kB/s-4788kB/s), io=32.0MiB (33.6MB), run=2628-2791msec