== sanity test 398b: DIO and buffer IO race ============== 09:09:49 (1787576989) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.18699 s, 8.1 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=143776: Mon Aug 24 09:12:40 2026 read: IOPS=10, BW=40.6KiB/s (41.5kB/s)(5992KiB/147728msec) clat (usec): min=31, max=644819, avg=48534.13, stdev=39594.62 lat (usec): min=31, max=644821, avg=48536.87, stdev=39595.44 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 70], 10.00th=[ 4359], 20.00th=[ 21627], | 30.00th=[ 28443], 40.00th=[ 35390], 50.00th=[ 41157], 60.00th=[ 48497], | 70.00th=[ 58459], 80.00th=[ 70779], 90.00th=[ 92799], 95.00th=[116917], | 99.00th=[173016], 99.50th=[202376], 99.90th=[337642], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 7, max= 96, per=25.61%, avg=40.47, stdev=20.08, samples=286 iops : min= 1, max= 24, avg= 9.45, stdev= 5.07, samples=286 write: IOPS=10, BW=42.6KiB/s (43.6kB/s)(6296KiB/147728msec); 0 zone resets clat (usec): min=935, max=471146, avg=47239.36, stdev=50189.09 lat (usec): min=936, max=471148, avg=47242.15, stdev=50189.40 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1369], 10.00th=[ 1647], 20.00th=[ 4817], | 30.00th=[ 10421], 40.00th=[ 22152], 50.00th=[ 34341], 60.00th=[ 46400], | 70.00th=[ 61604], 80.00th=[ 78119], 90.00th=[112722], 95.00th=[147850], | 99.00th=[202376], 99.50th=[252707], 99.90th=[467665], 99.95th=[471860], | 99.99th=[471860] bw ( KiB/s): min= 5, max= 111, per=25.39%, avg=42.15, stdev=19.15, samples=289 iops : min= 1, max= 27, avg= 9.88, stdev= 4.82, samples=289 lat (usec) : 50=0.16%, 100=4.10%, 250=0.33%, 500=0.07%, 750=0.10% lat (usec) : 1000=0.10% lat (msec) : 2=5.79%, 4=3.35%, 10=5.92%, 20=8.30%, 50=33.46% lat (msec) : 100=28.03%, 250=9.90%, 500=0.36%, 750=0.03% cpu : usr=0.09%, sys=4.67%, ctx=6499, 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=143779: Mon Aug 24 09:12:40 2026 read: IOPS=9, BW=39.9KiB/s (40.8kB/s)(5940KiB/149041msec) clat (usec): min=40, max=329301, avg=49391.76, stdev=36352.40 lat (usec): min=40, max=329302, avg=49398.52, stdev=36350.08 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 75], 10.00th=[ 14353], 20.00th=[ 22938], | 30.00th=[ 28967], 40.00th=[ 35390], 50.00th=[ 42206], 60.00th=[ 49021], | 70.00th=[ 60556], 80.00th=[ 72877], 90.00th=[ 94897], 95.00th=[117965], | 99.00th=[168821], 99.50th=[191890], 99.90th=[278922], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 6, max= 102, per=25.22%, avg=39.84, stdev=18.25, samples=289 iops : min= 1, max= 25, avg= 9.30, stdev= 4.61, samples=289 write: IOPS=10, BW=42.6KiB/s (43.6kB/s)(6348KiB/149041msec); 0 zone resets clat (usec): min=964, max=648664, avg=47301.24, stdev=52729.68 lat (usec): min=965, max=648667, avg=47307.20, stdev=52731.92 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1385], 10.00th=[ 1713], 20.00th=[ 5276], | 30.00th=[ 10552], 40.00th=[ 20579], 50.00th=[ 33817], 60.00th=[ 46400], | 70.00th=[ 61080], 80.00th=[ 79168], 90.00th=[110625], 95.00th=[139461], | 99.00th=[221250], 99.50th=[308282], 99.90th=[450888], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 7, max= 103, per=25.43%, avg=42.21, stdev=20.37, samples=291 iops : min= 1, max= 25, avg= 9.89, stdev= 5.12, samples=291 lat (usec) : 50=0.07%, 100=3.42%, 250=0.49%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=5.83%, 4=2.99%, 10=6.64%, 20=8.59%, 50=33.40% lat (msec) : 100=27.86%, 250=9.99%, 500=0.46%, 750=0.03% cpu : usr=0.08%, sys=4.69%, ctx=6448, 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=143781: Mon Aug 24 09:12:40 2026 read: IOPS=9, BW=39.8KiB/s (40.8kB/s)(6028KiB/151418msec) clat (usec): min=35, max=413684, avg=49014.84, stdev=38165.86 lat (usec): min=35, max=413686, avg=49022.60, stdev=38171.62 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 70], 10.00th=[ 1582], 20.00th=[ 21103], | 30.00th=[ 28181], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 49546], | 70.00th=[ 61080], 80.00th=[ 72877], 90.00th=[ 95945], 95.00th=[116917], | 99.00th=[173016], 99.50th=[217056], 99.90th=[316670], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 7, max= 142, per=25.10%, avg=39.65, stdev=19.51, samples=295 iops : min= 1, max= 35, avg= 9.25, stdev= 4.92, samples=295 write: IOPS=10, BW=41.3KiB/s (42.3kB/s)(6260KiB/151418msec); 0 zone resets clat (usec): min=864, max=880976, avg=49151.97, stdev=52392.87 lat (usec): min=866, max=880979, avg=49154.23, stdev=52393.16 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1369], 10.00th=[ 2057], 20.00th=[ 5604], | 30.00th=[ 12518], 40.00th=[ 25035], 50.00th=[ 36963], 60.00th=[ 49546], | 70.00th=[ 62129], 80.00th=[ 81265], 90.00th=[111674], 95.00th=[145753], | 99.00th=[208667], 99.50th=[235930], 99.90th=[408945], 99.95th=[884999], | 99.99th=[884999] bw ( KiB/s): min= 7, max= 133, per=24.79%, avg=41.16, stdev=20.78, samples=295 iops : min= 1, max= 33, avg= 9.63, stdev= 5.24, samples=295 lat (usec) : 50=0.33%, 100=4.00%, 250=0.39%, 500=0.07%, 1000=0.16% lat (msec) : 2=4.92%, 4=3.26%, 10=5.99%, 20=8.07%, 50=32.98% lat (msec) : 100=28.97%, 250=10.61%, 500=0.23%, 1000=0.03% cpu : usr=0.08%, sys=4.55%, ctx=6680, 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=143782: Mon Aug 24 09:12:40 2026 read: IOPS=10, BW=40.3KiB/s (41.3kB/s)(6052KiB/150087msec) clat (usec): min=31, max=704662, avg=49088.49, stdev=42121.22 lat (usec): min=31, max=704664, avg=49093.82, stdev=42122.45 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 68], 10.00th=[ 676], 20.00th=[ 21627], | 30.00th=[ 27132], 40.00th=[ 32900], 50.00th=[ 40109], 60.00th=[ 49546], | 70.00th=[ 60031], 80.00th=[ 71828], 90.00th=[ 95945], 95.00th=[119014], | 99.00th=[175113], 99.50th=[227541], 99.90th=[362808], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 6, max= 119, per=25.67%, avg=40.56, stdev=19.77, samples=289 iops : min= 1, max= 29, avg= 9.48, stdev= 4.98, samples=289 write: IOPS=10, BW=41.5KiB/s (42.5kB/s)(6236KiB/150087msec); 0 zone resets clat (usec): min=1022, max=465243, avg=48165.94, stdev=50805.18 lat (usec): min=1023, max=465245, avg=48168.96, stdev=50804.67 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1336], 10.00th=[ 1696], 20.00th=[ 5211], | 30.00th=[ 11207], 40.00th=[ 21627], 50.00th=[ 34866], 60.00th=[ 50594], | 70.00th=[ 63701], 80.00th=[ 82314], 90.00th=[110625], 95.00th=[143655], | 99.00th=[206570], 99.50th=[238027], 99.90th=[438305], 99.95th=[463471], | 99.99th=[463471] bw ( KiB/s): min= 7, max= 143, per=24.71%, avg=41.02, stdev=19.43, samples=294 iops : min= 1, max= 35, avg= 9.60, stdev= 4.88, samples=294 lat (usec) : 50=0.42%, 100=3.84%, 250=0.46%, 500=0.20%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=5.76%, 4=3.16%, 10=6.15%, 20=8.14%, 50=31.80% lat (msec) : 100=28.61%, 250=10.87%, 500=0.36%, 750=0.03% cpu : usr=0.09%, sys=4.67%, ctx=6525, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=159KiB/s (162kB/s), 39.8KiB/s-40.6KiB/s (40.8kB/s-41.5kB/s), io=23.4MiB (24.6MB), run=147728-151418msec WRITE: bw=166KiB/s (170kB/s), 41.3KiB/s-42.6KiB/s (42.3kB/s-43.6kB/s), io=24.6MiB (25.7MB), run=147728-151418msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143775: Mon Aug 24 09:15:01 2026 read: IOPS=5, BW=20.5KiB/s (20.0kB/s)(5992KiB/292404msec) clat (msec): min=6, max=728, avg=40.39, stdev=43.33 lat (msec): min=6, max=728, avg=40.39, stdev=43.33 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 86], 95.00th=[ 117], | 99.00th=[ 197], 99.50th=[ 230], 99.90th=[ 592], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 87, per=28.46%, avg=23.33, stdev=16.16, samples=494 iops : min= 1, max= 21, avg= 5.16, stdev= 4.05, samples=494 write: IOPS=5, BW=21.5KiB/s (22.0kB/s)(6296KiB/292404msec); 0 zone resets clat (msec): min=35, max=612, avg=146.97, stdev=78.08 lat (msec): min=35, max=612, avg=146.99, stdev=78.09 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 66], 10.00th=[ 73], 20.00th=[ 88], | 30.00th=[ 101], 40.00th=[ 112], 50.00th=[ 126], 60.00th=[ 142], | 70.00th=[ 165], 80.00th=[ 197], 90.00th=[ 245], 95.00th=[ 305], | 99.00th=[ 422], 99.50th=[ 506], 99.90th=[ 584], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 7, max= 56, per=24.99%, avg=21.24, stdev=10.46, samples=568 iops : min= 1, max= 14, avg= 4.64, stdev= 2.67, samples=568 lat (msec) : 10=3.03%, 20=13.90%, 50=20.54%, 100=23.21%, 250=34.38% lat (msec) : 500=4.62%, 750=0.33% cpu : usr=0.05%, sys=1.13%, ctx=5237, 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=143777: Mon Aug 24 09:15:01 2026 read: IOPS=5, BW=20.5KiB/s (20.0kB/s)(5940KiB/290184msec) clat (msec): min=5, max=767, avg=41.12, stdev=46.26 lat (msec): min=5, max=767, avg=41.12, stdev=46.26 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 55], 90.00th=[ 86], 95.00th=[ 123], | 99.00th=[ 228], 99.50th=[ 259], 99.90th=[ 388], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 103, per=29.38%, avg=24.09, stdev=16.60, samples=474 iops : min= 1, max= 25, avg= 5.35, stdev= 4.18, samples=474 write: IOPS=5, BW=21.9KiB/s (22.4kB/s)(6348KiB/290184msec); 0 zone resets clat (msec): min=36, max=597, avg=144.03, stdev=75.26 lat (msec): min=36, max=597, avg=144.04, stdev=75.26 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 71], 20.00th=[ 86], | 30.00th=[ 97], 40.00th=[ 110], 50.00th=[ 126], 60.00th=[ 142], | 70.00th=[ 161], 80.00th=[ 190], 90.00th=[ 241], 95.00th=[ 300], | 99.00th=[ 422], 99.50th=[ 460], 99.90th=[ 518], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 7, max= 56, per=25.49%, avg=21.66, stdev=10.67, samples=561 iops : min= 1, max= 14, avg= 4.74, stdev= 2.72, samples=561 lat (msec) : 10=2.38%, 20=15.17%, 50=20.44%, 100=23.57%, 250=33.56% lat (msec) : 500=4.75%, 750=0.10%, 1000=0.03% cpu : usr=0.05%, sys=1.18%, ctx=5328, 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=143778: Mon Aug 24 09:15:01 2026 read: IOPS=5, BW=20.9KiB/s (21.4kB/s)(6028KiB/288832msec) clat (msec): min=4, max=723, avg=42.60, stdev=46.19 lat (msec): min=4, max=723, avg=42.60, stdev=46.19 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 60], 90.00th=[ 94], 95.00th=[ 123], | 99.00th=[ 215], 99.50th=[ 266], 99.90th=[ 447], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 102, per=28.36%, avg=23.25, stdev=16.72, samples=498 iops : min= 1, max= 25, avg= 5.15, stdev= 4.23, samples=498 write: IOPS=5, BW=21.7KiB/s (22.2kB/s)(6260KiB/288832msec); 0 zone resets clat (msec): min=32, max=839, avg=143.18, stdev=76.08 lat (msec): min=32, max=839, avg=143.18, stdev=76.08 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 61], 10.00th=[ 71], 20.00th=[ 86], | 30.00th=[ 97], 40.00th=[ 110], 50.00th=[ 124], 60.00th=[ 140], | 70.00th=[ 161], 80.00th=[ 192], 90.00th=[ 249], 95.00th=[ 288], | 99.00th=[ 397], 99.50th=[ 472], 99.90th=[ 558], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 56, per=25.30%, avg=21.50, stdev=10.97, samples=557 iops : min= 1, max= 14, avg= 4.70, stdev= 2.79, samples=557 lat (msec) : 10=3.12%, 20=14.06%, 50=20.21%, 100=23.47%, 250=34.05% lat (msec) : 500=4.88%, 750=0.16%, 1000=0.03% cpu : usr=0.05%, sys=1.14%, ctx=5161, 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=143780: Mon Aug 24 09:15:01 2026 read: IOPS=5, BW=20.9KiB/s (21.4kB/s)(6052KiB/288990msec) clat (msec): min=5, max=447, avg=40.27, stdev=41.89 lat (msec): min=5, max=447, avg=40.27, stdev=41.89 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 84], 95.00th=[ 118], | 99.00th=[ 190], 99.50th=[ 271], 99.90th=[ 401], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 119, per=29.10%, avg=23.86, stdev=16.88, samples=488 iops : min= 1, max= 29, avg= 5.29, stdev= 4.25, samples=488 write: IOPS=5, BW=21.6KiB/s (22.1kB/s)(6236KiB/288990msec); 0 zone resets clat (msec): min=34, max=843, avg=145.91, stdev=79.64 lat (msec): min=34, max=843, avg=145.92, stdev=79.67 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 88], | 30.00th=[ 103], 40.00th=[ 113], 50.00th=[ 126], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 188], 90.00th=[ 245], 95.00th=[ 305], | 99.00th=[ 418], 99.50th=[ 477], 99.90th=[ 726], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 62, per=25.37%, avg=21.57, stdev=10.54, samples=554 iops : min= 1, max= 15, avg= 4.72, stdev= 2.68, samples=554 lat (msec) : 10=2.67%, 20=14.91%, 50=20.51%, 100=22.17%, 250=34.60% lat (msec) : 500=4.92%, 750=0.20%, 1000=0.03% cpu : usr=0.04%, sys=1.12%, ctx=5127, 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=82.1KiB/s (84.1kB/s), 20.5KiB/s-20.9KiB/s (20.0kB/s-21.4kB/s), io=23.4MiB (24.6MB), run=288832-292404msec WRITE: bw=85.0KiB/s (88.0kB/s), 21.5KiB/s-21.9KiB/s (22.0kB/s-22.4kB/s), io=24.6MiB (25.7MB), run=288832-292404msec 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=143839: Mon Aug 24 09:15:54 2026 read: IOPS=10, BW=164KiB/s (168kB/s)(5920KiB/36146msec) clat (usec): min=37, max=353422, avg=51684.09, stdev=41644.99 lat (usec): min=38, max=353424, avg=51685.48, stdev=41645.01 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 63], 10.00th=[ 71], 20.00th=[ 2442], | 30.00th=[ 31327], 40.00th=[ 40109], 50.00th=[ 47449], 60.00th=[ 56886], | 70.00th=[ 66323], 80.00th=[ 78119], 90.00th=[104334], 95.00th=[126354], | 99.00th=[168821], 99.50th=[200279], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 31, max= 335, per=24.63%, avg=163.04, stdev=64.06, samples=71 iops : min= 1, max= 20, avg= 9.37, stdev= 4.04, samples=71 write: IOPS=11, BW=176KiB/s (180kB/s)(6368KiB/36146msec); 0 zone resets clat (usec): min=1453, max=263901, avg=42268.79, stdev=49120.40 lat (usec): min=1455, max=263904, avg=42311.61, stdev=49169.91 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1778], 10.00th=[ 1991], 20.00th=[ 5538], | 30.00th=[ 8094], 40.00th=[ 12518], 50.00th=[ 22676], 60.00th=[ 38011], | 70.00th=[ 50594], 80.00th=[ 77071], 90.00th=[106431], 95.00th=[143655], | 99.00th=[229639], 99.50th=[261096], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 31, max= 409, per=25.54%, avg=178.01, stdev=80.62, samples=70 iops : min= 1, max= 25, avg=10.31, stdev= 5.11, samples=70 lat (usec) : 50=0.91%, 100=7.81%, 250=0.13%, 750=0.13%, 1000=0.26% lat (msec) : 2=5.34%, 4=3.26%, 10=9.90%, 20=8.46%, 50=25.00% lat (msec) : 100=26.69%, 250=11.72%, 500=0.39% cpu : usr=0.06%, sys=4.37%, ctx=1381, 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=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=143840: Mon Aug 24 09:15:54 2026 read: IOPS=10, BW=160KiB/s (164kB/s)(5744KiB/35853msec) clat (usec): min=40, max=231445, avg=52891.38, stdev=39873.95 lat (usec): min=40, max=231446, avg=52892.78, stdev=39873.97 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 64], 10.00th=[ 71], 20.00th=[ 17433], | 30.00th=[ 31589], 40.00th=[ 40633], 50.00th=[ 49021], 60.00th=[ 59507], | 70.00th=[ 70779], 80.00th=[ 83362], 90.00th=[101188], 95.00th=[117965], | 99.00th=[181404], 99.50th=[217056], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 31, max= 349, per=24.23%, avg=160.39, stdev=68.24, samples=70 iops : min= 1, max= 21, avg= 9.20, stdev= 4.31, samples=70 write: IOPS=11, BW=183KiB/s (187kB/s)(6544KiB/35853msec); 0 zone resets clat (usec): min=1500, max=276408, avg=40633.75, stdev=44610.33 lat (usec): min=1500, max=276411, avg=40636.32, stdev=44610.14 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1876], 10.00th=[ 2147], 20.00th=[ 6259], | 30.00th=[ 10552], 40.00th=[ 14484], 50.00th=[ 24773], 60.00th=[ 36963], | 70.00th=[ 54789], 80.00th=[ 73925], 90.00th=[ 92799], 95.00th=[130548], | 99.00th=[200279], 99.50th=[227541], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 31, max= 372, per=26.14%, avg=182.19, stdev=79.00, samples=70 iops : min= 1, max= 23, avg=10.59, stdev= 5.04, samples=70 lat (usec) : 50=0.65%, 100=7.16%, 250=0.52% lat (msec) : 2=4.56%, 4=3.65%, 10=7.29%, 20=11.07%, 50=24.74% lat (msec) : 100=31.64%, 250=8.46%, 500=0.26% cpu : usr=0.09%, sys=4.62%, ctx=1408, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143841: Mon Aug 24 09:15:54 2026 read: IOPS=10, BW=175KiB/s (179kB/s)(6256KiB/35845msec) clat (usec): min=37, max=398006, avg=50373.64, stdev=46355.48 lat (usec): min=37, max=398007, avg=50375.05, stdev=46355.48 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 62], 10.00th=[ 68], 20.00th=[ 87], | 30.00th=[ 26870], 40.00th=[ 37487], 50.00th=[ 46400], 60.00th=[ 53216], | 70.00th=[ 66323], 80.00th=[ 79168], 90.00th=[104334], 95.00th=[125305], | 99.00th=[200279], 99.50th=[299893], 99.90th=[396362], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 31, max= 440, per=26.51%, avg=175.49, stdev=89.20, samples=70 iops : min= 1, max= 27, avg=10.16, stdev= 5.61, samples=70 write: IOPS=10, BW=168KiB/s (172kB/s)(6032KiB/35845msec); 0 zone resets clat (usec): min=1476, max=508188, avg=42192.34, stdev=51796.11 lat (usec): min=1477, max=508188, avg=42194.65, stdev=51796.14 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1893], 10.00th=[ 2638], 20.00th=[ 6194], | 30.00th=[ 9765], 40.00th=[ 15139], 50.00th=[ 25560], 60.00th=[ 38536], | 70.00th=[ 51119], 80.00th=[ 67634], 90.00th=[107480], 95.00th=[131597], | 99.00th=[225444], 99.50th=[392168], 99.90th=[509608], 99.95th=[509608], | 99.99th=[509608] bw ( KiB/s): min= 31, max= 440, per=23.90%, avg=166.59, stdev=76.48, samples=70 iops : min= 1, max= 27, avg= 9.60, stdev= 4.84, samples=70 lat (usec) : 50=1.04%, 100=9.77%, 250=0.52%, 500=0.52%, 1000=0.13% lat (msec) : 2=3.78%, 4=3.12%, 10=8.20%, 20=8.59%, 50=26.17% lat (msec) : 100=27.34%, 250=10.29%, 500=0.39%, 750=0.13% cpu : usr=0.09%, sys=4.32%, ctx=1341, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143842: Mon Aug 24 09:15:54 2026 read: IOPS=10, BW=173KiB/s (177kB/s)(6032KiB/34895msec) clat (usec): min=36, max=265446, avg=52160.57, stdev=39739.18 lat (usec): min=36, max=265447, avg=52193.77, stdev=39747.12 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 63], 10.00th=[ 72], 20.00th=[ 2343], | 30.00th=[ 32113], 40.00th=[ 43254], 50.00th=[ 50070], 60.00th=[ 59507], | 70.00th=[ 67634], 80.00th=[ 84411], 90.00th=[102237], 95.00th=[117965], | 99.00th=[170918], 99.50th=[183501], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 31, max= 411, per=25.78%, avg=170.65, stdev=71.97, samples=68 iops : min= 1, max= 25, avg= 9.85, stdev= 4.58, samples=68 write: IOPS=11, BW=179KiB/s (184kB/s)(6256KiB/34895msec); 0 zone resets clat (usec): min=1537, max=381146, avg=38135.86, stdev=45072.59 lat (usec): min=1538, max=381150, avg=38154.42, stdev=45066.39 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1827], 10.00th=[ 2147], 20.00th=[ 5342], | 30.00th=[ 8291], 40.00th=[ 12387], 50.00th=[ 19530], 60.00th=[ 32637], | 70.00th=[ 45351], 80.00th=[ 66847], 90.00th=[100140], 95.00th=[125305], | 99.00th=[196084], 99.50th=[240124], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 31, max= 512, per=25.38%, avg=176.90, stdev=86.42, samples=68 iops : min= 1, max= 32, avg=10.24, stdev= 5.50, samples=68 lat (usec) : 50=1.30%, 100=6.90%, 250=0.91%, 500=0.39% lat (msec) : 2=4.43%, 4=3.78%, 10=10.42%, 20=8.59%, 50=24.35% lat (msec) : 100=27.99%, 250=10.68%, 500=0.26% cpu : usr=0.11%, sys=5.02%, ctx=1379, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=663KiB/s (679kB/s), 160KiB/s-175KiB/s (164kB/s-179kB/s), io=23.4MiB (24.5MB), run=34895-36146msec WRITE: bw=697KiB/s (714kB/s), 168KiB/s-183KiB/s (172kB/s-187kB/s), io=24.6MiB (25.8MB), run=34895-36146msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143844: Mon Aug 24 09:16:46 2026 read: IOPS=4, BW=68.3KiB/s (69.9kB/s)(5920KiB/86699msec) clat (msec): min=7, max=303, avg=48.25, stdev=46.88 lat (msec): min=7, max=303, avg=48.25, stdev=46.88 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 62], 90.00th=[ 110], 95.00th=[ 159], | 99.00th=[ 236], 99.50th=[ 279], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 30, max= 318, per=29.24%, avg=80.12, stdev=52.84, samples=145 iops : min= 1, max= 19, avg= 4.23, stdev= 3.35, samples=145 write: IOPS=4, BW=73.4KiB/s (75.2kB/s)(6368KiB/86699msec); 0 zone resets clat (msec): min=38, max=562, avg=172.80, stdev=84.36 lat (msec): min=38, max=562, avg=172.80, stdev=84.36 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 73], 10.00th=[ 86], 20.00th=[ 103], | 30.00th=[ 124], 40.00th=[ 138], 50.00th=[ 153], 60.00th=[ 174], | 70.00th=[ 199], 80.00th=[ 234], 90.00th=[ 284], 95.00th=[ 330], | 99.00th=[ 489], 99.50th=[ 542], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 24, max= 160, per=25.98%, avg=74.83, stdev=36.03, samples=167 iops : min= 1, max= 10, avg= 3.87, stdev= 2.32, samples=167 lat (msec) : 10=0.52%, 20=10.29%, 50=24.74%, 100=16.93%, 250=39.19% lat (msec) : 500=8.07%, 750=0.26% cpu : usr=0.04%, sys=1.07%, ctx=1320, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143845: Mon Aug 24 09:16:46 2026 read: IOPS=4, BW=65.7KiB/s (67.3kB/s)(5744KiB/87411msec) clat (msec): min=6, max=299, avg=45.13, stdev=44.16 lat (msec): min=6, max=299, avg=45.13, stdev=44.16 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 47], 80.00th=[ 61], 90.00th=[ 93], 95.00th=[ 142], | 99.00th=[ 241], 99.50th=[ 292], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 24, max= 318, per=29.75%, avg=81.52, stdev=59.84, samples=137 iops : min= 1, max= 19, avg= 4.31, stdev= 3.76, samples=137 write: IOPS=4, BW=74.9KiB/s (76.7kB/s)(6544KiB/87411msec); 0 zone resets clat (msec): min=35, max=569, avg=173.83, stdev=89.39 lat (msec): min=35, max=569, avg=173.83, stdev=89.39 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 68], 10.00th=[ 79], 20.00th=[ 107], | 30.00th=[ 123], 40.00th=[ 140], 50.00th=[ 157], 60.00th=[ 174], | 70.00th=[ 199], 80.00th=[ 230], 90.00th=[ 288], 95.00th=[ 351], | 99.00th=[ 468], 99.50th=[ 510], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 30, max= 222, per=26.49%, avg=76.30, stdev=36.33, samples=167 iops : min= 1, max= 13, avg= 3.96, stdev= 2.33, samples=167 lat (msec) : 10=1.69%, 20=11.20%, 50=22.01%, 100=17.45%, 250=38.93% lat (msec) : 500=8.33%, 750=0.39% cpu : usr=0.05%, sys=0.98%, ctx=1222, 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=143846: Mon Aug 24 09:16:46 2026 read: IOPS=4, BW=73.8KiB/s (75.6kB/s)(6256KiB/84744msec) clat (msec): min=6, max=253, avg=46.50, stdev=39.59 lat (msec): min=6, max=253, avg=46.50, stdev=39.59 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 50], 80.00th=[ 66], 90.00th=[ 94], 95.00th=[ 134], | 99.00th=[ 215], 99.50th=[ 251], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 30, max= 381, per=31.00%, avg=84.93, stdev=58.47, samples=145 iops : min= 1, max= 23, avg= 4.50, stdev= 3.70, samples=145 write: IOPS=4, BW=71.2KiB/s (72.9kB/s)(6032KiB/84744msec); 0 zone resets clat (msec): min=52, max=549, avg=176.44, stdev=79.32 lat (msec): min=52, max=549, avg=176.44, stdev=79.32 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 80], 10.00th=[ 94], 20.00th=[ 111], | 30.00th=[ 125], 40.00th=[ 140], 50.00th=[ 159], 60.00th=[ 182], | 70.00th=[ 207], 80.00th=[ 234], 90.00th=[ 288], 95.00th=[ 321], | 99.00th=[ 435], 99.50th=[ 481], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 30, max= 159, per=24.80%, avg=71.42, stdev=31.05, samples=165 iops : min= 1, max= 9, avg= 3.65, stdev= 2.01, samples=165 lat (msec) : 10=1.04%, 20=10.55%, 50=24.35%, 100=17.06%, 250=38.80% lat (msec) : 500=8.07%, 750=0.13% cpu : usr=0.05%, sys=1.02%, ctx=1316, 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=143847: Mon Aug 24 09:16:46 2026 read: IOPS=4, BW=69.5KiB/s (71.2kB/s)(6032KiB/86757msec) clat (msec): min=6, max=283, avg=47.13, stdev=46.45 lat (msec): min=6, max=283, avg=47.13, stdev=46.45 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 46], 80.00th=[ 62], 90.00th=[ 103], 95.00th=[ 155], | 99.00th=[ 234], 99.50th=[ 266], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 30, max= 287, per=31.27%, avg=85.69, stdev=57.75, samples=137 iops : min= 1, max= 17, avg= 4.57, stdev= 3.66, samples=137 write: IOPS=4, BW=72.1KiB/s (73.8kB/s)(6256KiB/86757msec); 0 zone resets clat (msec): min=49, max=634, avg=176.23, stdev=84.72 lat (msec): min=49, max=634, avg=176.23, stdev=84.72 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 73], 10.00th=[ 94], 20.00th=[ 108], | 30.00th=[ 126], 40.00th=[ 142], 50.00th=[ 159], 60.00th=[ 180], | 70.00th=[ 203], 80.00th=[ 232], 90.00th=[ 292], 95.00th=[ 338], | 99.00th=[ 451], 99.50th=[ 584], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 30, max= 160, per=25.80%, avg=74.30, stdev=32.41, samples=165 iops : min= 1, max= 10, avg= 3.84, stdev= 2.11, samples=165 lat (msec) : 10=2.08%, 20=10.03%, 50=24.09%, 100=14.97%, 250=40.49% lat (msec) : 500=7.94%, 750=0.39% cpu : usr=0.04%, sys=1.11%, ctx=1274, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=274KiB/s (281kB/s), 65.7KiB/s-73.8KiB/s (67.3kB/s-75.6kB/s), io=23.4MiB (24.5MB), run=84744-87411msec WRITE: bw=288KiB/s (295kB/s), 71.2KiB/s-74.9KiB/s (72.9kB/s-76.7kB/s), io=24.6MiB (25.8MB), run=84744-87411msec 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=143868: Mon Aug 24 09:17:05 2026 read: IOPS=1, BW=1834KiB/s (1878kB/s)(7168KiB/3909msec) clat (msec): min=109, max=485, avg=279.11, stdev=159.99 lat (msec): min=109, max=485, avg=279.11, stdev=159.99 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 130], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 215], 60.00th=[ 384], | 70.00th=[ 384], 80.00th=[ 460], 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= 2011, max= 4544, per=67.73%, avg=2660.25, stdev=1255.92, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1310KiB/s (1341kB/s)(5120KiB/3909msec); 0 zone resets clat (msec): min=178, max=651, avg=376.62, stdev=190.27 lat (msec): min=178, max=651, avg=376.72, stdev=190.27 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 347], 60.00th=[ 347], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1747, max= 2043, per=35.91%, avg=1975.00, stdev=128.06, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=50.00%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=11.46%, ctx=194, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143869: Mon Aug 24 09:17:05 2026 read: IOPS=0, BW=393KiB/s (402kB/s)(2048KiB/5213msec) clat (msec): min=173, max=229, avg=201.57, stdev=39.23 lat (msec): min=173, max=229, avg=201.58, stdev=39.23 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 174], 60.00th=[ 230], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 230], 95.00th=[ 230], | 99.00th=[ 230], 99.50th=[ 230], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 1692, max= 1988, per=46.84%, avg=1840.00, stdev=209.30, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1964KiB/s (2011kB/s)(10.0MiB/5213msec); 0 zone resets clat (msec): min=149, max=1085, avg=469.24, stdev=309.00 lat (msec): min=149, max=1085, avg=469.52, stdev=308.82 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 178], | 30.00th=[ 249], 40.00th=[ 271], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 600], 80.00th=[ 617], 90.00th=[ 844], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1747, max= 4071, per=47.82%, avg=2629.83, stdev=1065.14, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=8.08%, ctx=187, 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=143870: Mon Aug 24 09:17:05 2026 read: IOPS=1, BW=1405KiB/s (1438kB/s)(6144KiB/4374msec) clat (usec): min=573, max=578950, avg=284293.76, stdev=233719.93 lat (usec): min=574, max=578951, avg=284295.03, stdev=233719.82 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 603], | 30.00th=[ 603], 40.00th=[358613], 50.00th=[358613], 60.00th=[375391], | 70.00th=[392168], 80.00th=[392168], 90.00th=[583009], 95.00th=[583009], | 99.00th=[583009], 99.50th=[583009], 99.90th=[583009], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 2035, max= 4087, per=86.09%, avg=3381.67, stdev=1166.69, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1405KiB/s (1438kB/s)(6144KiB/4374msec); 0 zone resets clat (msec): min=182, max=657, avg=421.16, stdev=201.60 lat (msec): min=182, max=658, avg=421.43, stdev=201.87 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 207], | 30.00th=[ 207], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 510], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1641, max= 2043, per=34.83%, avg=1915.50, stdev=175.95, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (usec) : 750=16.67% lat (msec) : 250=16.67%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=8.74%, ctx=150, 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=143871: Mon Aug 24 09:17:05 2026 read: IOPS=1, BW=1486KiB/s (1522kB/s)(5120KiB/3445msec) clat (usec): min=420, max=539761, avg=206956.35, stdev=265943.91 lat (usec): min=422, max=539762, avg=206957.44, stdev=265944.12 clat percentiles (usec): | 1.00th=[ 420], 5.00th=[ 420], 10.00th=[ 420], 20.00th=[ 420], | 30.00th=[ 5080], 40.00th=[ 5080], 50.00th=[ 37487], 60.00th=[ 37487], | 70.00th=[450888], 80.00th=[450888], 90.00th=[541066], 95.00th=[541066], | 99.00th=[541066], 99.50th=[541066], 99.90th=[541066], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 2011, max= 5242, per=92.32%, avg=3626.50, stdev=2284.66, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2081KiB/s (2131kB/s)(7168KiB/3445msec); 0 zone resets clat (msec): min=204, max=469, avg=327.29, stdev=91.66 lat (msec): min=204, max=469, avg=327.38, stdev=91.68 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 249], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 313], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 414], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 1615, max= 4087, per=53.76%, avg=2957.00, stdev=1316.24, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33% lat (msec) : 10=8.33%, 50=8.33%, 250=16.67%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=12.43%, ctx=120, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3929KiB/s (4023kB/s), 393KiB/s-1834KiB/s (402kB/s-1878kB/s), io=20.0MiB (20.0MB), run=3445-5213msec WRITE: bw=5500KiB/s (5632kB/s), 1310KiB/s-2081KiB/s (1341kB/s-2131kB/s), io=28.0MiB (29.4MB), run=3445-5213msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143873: Mon Aug 24 09:17:06 2026 read: IOPS=1, BW=1554KiB/s (1592kB/s)(7168KiB/4612msec) clat (msec): min=96, max=594, avg=264.21, stdev=212.64 lat (msec): min=96, max=594, avg=264.21, stdev=212.64 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 113], | 30.00th=[ 126], 40.00th=[ 126], 50.00th=[ 171], 60.00th=[ 203], | 70.00th=[ 203], 80.00th=[ 550], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1565, max= 4079, per=60.61%, avg=2341.80, stdev=991.14, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1110KiB/s (1137kB/s)(5120KiB/4612msec); 0 zone resets clat (msec): min=335, max=727, avg=467.56, stdev=151.58 lat (msec): min=335, max=727, avg=467.65, stdev=151.57 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1980, max= 2043, per=37.29%, avg=2017.25, stdev=27.35, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=25.00% cpu : usr=0.00%, sys=2.99%, ctx=70, 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=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=143874: Mon Aug 24 09:17:06 2026 read: IOPS=0, BW=400KiB/s (409kB/s)(2048KiB/5124msec) clat (msec): min=79, max=609, avg=344.51, stdev=374.38 lat (msec): min=79, max=609, avg=344.51, stdev=374.38 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 81], | 30.00th=[ 81], 40.00th=[ 81], 50.00th=[ 81], 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= 2015, max= 2043, per=52.51%, avg=2029.00, stdev=19.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1998KiB/s (2046kB/s)(10.0MiB/5124msec); 0 zone resets clat (msec): min=115, max=884, avg=418.31, stdev=293.24 lat (msec): min=115, max=884, avg=418.97, stdev=292.71 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 178], | 30.00th=[ 207], 40.00th=[ 262], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 409], 80.00th=[ 709], 90.00th=[ 877], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 2007, max= 4063, per=52.17%, avg=2822.60, stdev=1086.46, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=3.73%, ctx=76, 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=143875: Mon Aug 24 09:17:06 2026 read: IOPS=1, BW=1174KiB/s (1202kB/s)(6144KiB/5233msec) clat (msec): min=122, max=754, avg=336.76, stdev=236.24 lat (msec): min=122, max=754, avg=336.76, stdev=236.24 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 213], 50.00th=[ 213], 60.00th=[ 376], | 70.00th=[ 409], 80.00th=[ 409], 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= 1980, max= 4063, per=65.35%, avg=2525.25, stdev=1025.49, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1174KiB/s (1202kB/s)(6144KiB/5233msec); 0 zone resets clat (msec): min=151, max=1189, avg=529.05, stdev=439.97 lat (msec): min=151, max=1189, avg=529.13, stdev=439.96 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 220], 50.00th=[ 220], 60.00th=[ 477], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 2007, max= 4087, per=45.13%, avg=2441.40, stdev=920.02, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=50.00%, 500=25.00%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=3.44%, ctx=74, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143876: Mon Aug 24 09:17:06 2026 read: IOPS=0, BW=966KiB/s (989kB/s)(5120KiB/5299msec) clat (msec): min=72, max=365, avg=232.09, stdev=123.00 lat (msec): min=72, max=365, avg=232.09, stdev=123.00 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 1980, max= 4087, per=69.86%, avg=2699.33, stdev=1202.03, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1353KiB/s (1385kB/s)(7168KiB/5299msec); 0 zone resets clat (msec): min=185, max=1069, avg=582.66, stdev=334.63 lat (msec): min=185, max=1069, avg=582.75, stdev=334.63 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 313], | 30.00th=[ 464], 40.00th=[ 464], 50.00th=[ 506], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 1011], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 2007, max= 4087, per=43.73%, avg=2365.67, stdev=843.36, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 100=8.33%, 250=16.67%, 500=41.67%, 750=16.67%, 2000=16.67% cpu : usr=0.02%, sys=2.85%, ctx=70, 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=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=3865KiB/s (3958kB/s), 400KiB/s-1554KiB/s (409kB/s-1592kB/s), io=20.0MiB (20.0MB), run=4612-5299msec WRITE: bw=5411KiB/s (5541kB/s), 1110KiB/s-1998KiB/s (1137kB/s-2046kB/s), io=28.0MiB (29.4MB), run=4612-5299msec 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=143882: Mon Aug 24 09:17:24 2026 read: IOPS=0, BW=3178KiB/s (3255kB/s)(12.0MiB/3866msec) clat (msec): min=1114, max=1412, avg=1271.66, stdev=149.77 lat (msec): min=1114, max=1412, avg=1271.66, stdev=149.77 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7641, max= 8126, per=100.00%, avg=7883.50, stdev=342.95, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=7.79%, ctx=148, 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=143883: Mon Aug 24 09:17:24 2026 read: IOPS=0, BW=990KiB/s (1013kB/s)(4096KiB/4139msec) clat (nsec): min=1119.8M, max=1119.8M, avg=1119819997.00, stdev= 0.00 lat (nsec): min=1119.8M, max=1119.8M, avg=1119822154.00, 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= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1979KiB/s (2027kB/s)(8192KiB/4139msec); 0 zone resets clat (msec): min=729, max=2189, avg=1459.77, stdev=1032.30 lat (msec): min=730, max=2190, avg=1460.25, stdev=1032.53 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 2198], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] 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) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.51%, ctx=98, 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=143884: Mon Aug 24 09:17:24 2026 write: IOPS=0, BW=2380KiB/s (2437kB/s)(12.0MiB/5163msec); 0 zone resets clat (msec): min=669, max=2776, avg=1694.33, stdev=1054.62 lat (msec): min=669, max=2781, avg=1696.20, stdev=1057.01 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 1636], 50.00th=[ 1636], 60.00th=[ 1636], | 70.00th=[ 2769], 80.00th=[ 2769], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 8015, max= 8175, per=100.00%, avg=8095.00, stdev=113.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.48%, ctx=74, 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=143885: Mon Aug 24 09:17:24 2026 write: IOPS=1, BW=4398KiB/s (4504kB/s)(12.0MiB/2794msec); 0 zone resets clat (msec): min=700, max=1346, avg=920.25, stdev=369.40 lat (msec): min=700, max=1347, avg=920.60, stdev=369.42 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7613, max= 8110, per=100.00%, avg=7861.50, stdev=351.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.15%, ctx=48, 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=3958KiB/s (4053kB/s), 990KiB/s-3178KiB/s (1013kB/s-3255kB/s), io=16.0MiB (16.8MB), run=3866-4139msec WRITE: bw=6347KiB/s (6499kB/s), 1979KiB/s-4398KiB/s (2027kB/s-4504kB/s), io=32.0MiB (33.6MB), run=2794-5163msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143888: Mon Aug 24 09:17:26 2026 read: IOPS=1, BW=4551KiB/s (4660kB/s)(12.0MiB/2700msec) clat (msec): min=424, max=1367, avg=875.61, stdev=472.68 lat (msec): min=424, max=1367, avg=875.61, stdev=472.68 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 6564, max= 8175, per=100.00%, avg=7369.50, stdev=1139.15, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.19%, ctx=49, 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=143889: Mon Aug 24 09:17:26 2026 read: IOPS=0, BW=1241KiB/s (1271kB/s)(4096KiB/3300msec) clat (nsec): min=711600k, max=711600k, avg=711599917.00, stdev= 0.00 lat (nsec): min=711601k, max=711601k, avg=711601340.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 709], 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= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2482KiB/s (2542kB/s)(8192KiB/3300msec); 0 zone resets clat (msec): min=1100, max=1486, avg=1293.16, stdev=273.03 lat (msec): min=1100, max=1486, avg=1293.57, stdev=272.97 clat percentiles (msec): | 1.00th=[ 1099], 5.00th=[ 1099], 10.00th=[ 1099], 20.00th=[ 1099], | 30.00th=[ 1099], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1485], | 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= 8175, max= 8175, per=84.65%, avg=8175.00, 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=2.61%, ctx=45, 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=143890: Mon Aug 24 09:17:26 2026 write: IOPS=0, BW=3622KiB/s (3708kB/s)(12.0MiB/3393msec); 0 zone resets clat (msec): min=539, max=1584, avg=1094.81, stdev=525.38 lat (msec): min=539, max=1584, avg=1095.16, stdev=525.41 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 1586], 80.00th=[ 1586], 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= 8094, max= 8110, per=83.90%, avg=8102.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.03%, sys=2.51%, ctx=54, 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=143891: Mon Aug 24 09:17:26 2026 write: IOPS=1, BW=4258KiB/s (4360kB/s)(12.0MiB/2886msec); 0 zone resets clat (msec): min=620, max=1179, avg=928.15, stdev=283.45 lat (msec): min=621, max=1179, avg=928.63, stdev=283.34 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8094, max= 8110, per=83.90%, avg=8102.00, stdev=11.31, 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=0.03%, sys=4.23%, ctx=64, 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=4965KiB/s (5084kB/s), 1241KiB/s-4551KiB/s (1271kB/s-4660kB/s), io=16.0MiB (16.8MB), run=2700-3300msec WRITE: bw=9658KiB/s (9889kB/s), 2482KiB/s-4258KiB/s (2542kB/s-4360kB/s), io=32.0MiB (33.6MB), run=2886-3393msec