== sanity test 398b: DIO and buffer IO race ============== 01:51:56 (1788846716) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.65122 s, 8.9 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=147446: Tue Sep 8 01:53:46 2026 read: IOPS=16, BW=64.6KiB/s (66.2kB/s)(5992KiB/92701msec) clat (usec): min=32, max=848658, avg=30907.71, stdev=30568.46 lat (usec): min=33, max=848660, avg=30909.02, stdev=30568.44 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 169], 20.00th=[ 14615], | 30.00th=[ 18482], 40.00th=[ 21627], 50.00th=[ 26084], 60.00th=[ 31065], | 70.00th=[ 37487], 80.00th=[ 46400], 90.00th=[ 57934], 95.00th=[ 67634], | 99.00th=[119014], 99.50th=[141558], 99.90th=[164627], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 7, max= 143, per=25.05%, avg=64.12, stdev=22.94, samples=183 iops : min= 1, max= 35, avg=15.44, stdev= 5.75, samples=183 write: IOPS=16, BW=67.9KiB/s (69.5kB/s)(6296KiB/92701msec); 0 zone resets clat (usec): min=875, max=329844, avg=29196.58, stdev=28801.07 lat (usec): min=875, max=329846, avg=29201.27, stdev=28801.67 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1762], 20.00th=[ 3654], | 30.00th=[ 7111], 40.00th=[ 15533], 50.00th=[ 23200], 60.00th=[ 30540], | 70.00th=[ 38536], 80.00th=[ 50070], 90.00th=[ 67634], 95.00th=[ 80217], | 99.00th=[116917], 99.50th=[135267], 99.90th=[258999], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 7, max= 120, per=25.23%, avg=67.87, stdev=23.43, samples=182 iops : min= 1, max= 30, avg=16.38, stdev= 5.89, samples=182 lat (usec) : 50=1.30%, 100=3.26%, 250=0.49%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.20% lat (msec) : 2=5.47%, 4=5.34%, 10=7.39%, 20=16.63%, 50=41.67% lat (msec) : 100=16.18%, 250=1.82%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=6.32%, ctx=6649, 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=147447: Tue Sep 8 01:53:46 2026 read: IOPS=16, BW=64.1KiB/s (65.6kB/s)(5940KiB/92732msec) clat (usec): min=28, max=241824, avg=29510.53, stdev=21697.56 lat (usec): min=28, max=241825, avg=29512.78, stdev=21696.45 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 58], 10.00th=[ 8291], 20.00th=[ 14877], | 30.00th=[ 18220], 40.00th=[ 21365], 50.00th=[ 24773], 60.00th=[ 29754], | 70.00th=[ 35914], 80.00th=[ 42730], 90.00th=[ 56361], 95.00th=[ 66847], | 99.00th=[ 96994], 99.50th=[124257], 99.90th=[206570], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 5, max= 127, per=25.05%, avg=64.13, stdev=24.32, samples=182 iops : min= 1, max= 31, avg=15.45, stdev= 6.11, samples=182 write: IOPS=17, BW=68.5KiB/s (70.1kB/s)(6348KiB/92732msec); 0 zone resets clat (usec): min=931, max=832905, avg=30545.74, stdev=37977.61 lat (usec): min=932, max=832907, avg=30548.29, stdev=37977.56 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1205], 10.00th=[ 1500], 20.00th=[ 3130], | 30.00th=[ 6456], 40.00th=[ 14746], 50.00th=[ 22938], 60.00th=[ 29754], | 70.00th=[ 39060], 80.00th=[ 50070], 90.00th=[ 71828], 95.00th=[ 85459], | 99.00th=[135267], 99.50th=[210764], 99.90th=[367002], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 15, max= 141, per=25.42%, avg=68.38, stdev=24.60, samples=182 iops : min= 3, max= 35, avg=16.51, stdev= 6.19, samples=182 lat (usec) : 50=0.78%, 100=2.96%, 250=0.59%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.39% lat (msec) : 2=6.84%, 4=5.14%, 10=6.90%, 20=17.58%, 50=41.50% lat (msec) : 100=15.40%, 250=1.69%, 500=0.10%, 1000=0.03% cpu : usr=0.10%, sys=6.58%, ctx=6748, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147450: Tue Sep 8 01:53:46 2026 read: IOPS=16, BW=64.5KiB/s (66.1kB/s)(6028KiB/93398msec) clat (usec): min=30, max=237165, avg=29634.16, stdev=23751.59 lat (usec): min=30, max=237166, avg=29635.64, stdev=23751.05 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 57], 10.00th=[ 371], 20.00th=[ 13960], | 30.00th=[ 17433], 40.00th=[ 20317], 50.00th=[ 23987], 60.00th=[ 28705], | 70.00th=[ 34866], 80.00th=[ 43254], 90.00th=[ 56886], 95.00th=[ 70779], | 99.00th=[122160], 99.50th=[143655], 99.90th=[173016], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 7, max= 134, per=25.19%, avg=64.48, stdev=22.35, samples=182 iops : min= 1, max= 33, avg=15.52, stdev= 5.59, samples=182 write: IOPS=16, BW=67.0KiB/s (68.6kB/s)(6260KiB/93398msec); 0 zone resets clat (usec): min=951, max=945501, avg=30874.69, stdev=36792.80 lat (usec): min=952, max=945504, avg=30878.77, stdev=36795.73 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1172], 10.00th=[ 1647], 20.00th=[ 3621], | 30.00th=[ 7242], 40.00th=[ 15795], 50.00th=[ 24249], 60.00th=[ 31589], | 70.00th=[ 41157], 80.00th=[ 52691], 90.00th=[ 70779], 95.00th=[ 84411], | 99.00th=[115868], 99.50th=[132645], 99.90th=[219153], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 8, max= 128, per=24.81%, avg=66.73, stdev=24.08, samples=182 iops : min= 2, max= 32, avg=16.09, stdev= 6.04, samples=182 lat (usec) : 50=1.20%, 100=3.32%, 250=0.26%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=6.32%, 4=4.92%, 10=7.19%, 20=18.39%, 50=39.39% lat (msec) : 100=16.83%, 250=1.82%, 1000=0.03% cpu : usr=0.07%, sys=6.37%, ctx=6684, 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=147452: Tue Sep 8 01:53:46 2026 read: IOPS=16, BW=64.8KiB/s (66.3kB/s)(6052KiB/93437msec) clat (usec): min=33, max=814147, avg=30320.51, stdev=29969.04 lat (usec): min=33, max=814149, avg=30328.79, stdev=29969.15 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 5866], 20.00th=[ 14222], | 30.00th=[ 17957], 40.00th=[ 21890], 50.00th=[ 25560], 60.00th=[ 30278], | 70.00th=[ 36439], 80.00th=[ 43779], 90.00th=[ 56361], 95.00th=[ 68682], | 99.00th=[ 96994], 99.50th=[143655], 99.90th=[240124], 99.95th=[817890], | 99.99th=[817890] bw ( KiB/s): min= 5, max= 143, per=24.96%, avg=63.91, stdev=22.83, samples=184 iops : min= 1, max= 35, avg=15.39, stdev= 5.74, samples=184 write: IOPS=16, BW=66.7KiB/s (68.3kB/s)(6236KiB/93437msec); 0 zone resets clat (usec): min=834, max=190062, avg=30232.35, stdev=28877.88 lat (usec): min=835, max=190063, avg=30236.12, stdev=28876.86 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1188], 10.00th=[ 1729], 20.00th=[ 3720], | 30.00th=[ 7177], 40.00th=[ 15270], 50.00th=[ 23200], 60.00th=[ 31851], | 70.00th=[ 40633], 80.00th=[ 53216], 90.00th=[ 71828], 95.00th=[ 84411], | 99.00th=[120062], 99.50th=[137364], 99.90th=[175113], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 15, max= 175, per=24.69%, avg=66.42, stdev=22.24, samples=183 iops : min= 3, max= 43, avg=16.01, stdev= 5.60, samples=183 lat (usec) : 50=1.07%, 100=3.06%, 250=0.39%, 500=0.16%, 1000=0.29% lat (msec) : 2=5.86%, 4=4.62%, 10=7.65%, 20=17.87%, 50=40.07% lat (msec) : 100=17.25%, 250=1.66%, 1000=0.03% cpu : usr=0.08%, sys=6.48%, ctx=6778, 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=257KiB/s (263kB/s), 64.1KiB/s-64.8KiB/s (65.6kB/s-66.3kB/s), io=23.4MiB (24.6MB), run=92701-93437msec WRITE: bw=269KiB/s (276kB/s), 66.7KiB/s-68.5KiB/s (68.3kB/s-70.1kB/s), io=24.6MiB (25.7MB), run=92701-93437msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147448: Tue Sep 8 01:55:37 2026 read: IOPS=7, BW=29.5KiB/s (30.2kB/s)(5992KiB/202981msec) clat (msec): min=4, max=862, avg=26.26, stdev=32.83 lat (msec): min=4, max=862, avg=26.26, stdev=32.83 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 34], 90.00th=[ 57], 95.00th=[ 79], | 99.00th=[ 128], 99.50th=[ 161], 99.90th=[ 218], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7, max= 109, per=26.69%, avg=31.23, stdev=19.97, samples=374 iops : min= 1, max= 27, avg= 7.23, stdev= 5.02, samples=374 write: IOPS=7, BW=31.0KiB/s (31.8kB/s)(6296KiB/202981msec); 0 zone resets clat (msec): min=33, max=418, avg=103.72, stdev=45.63 lat (msec): min=33, max=418, avg=103.73, stdev=45.63 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 51], 10.00th=[ 58], 20.00th=[ 68], | 30.00th=[ 78], 40.00th=[ 86], 50.00th=[ 94], 60.00th=[ 106], | 70.00th=[ 117], 80.00th=[ 134], 90.00th=[ 161], 95.00th=[ 190], | 99.00th=[ 257], 99.50th=[ 309], 99.90th=[ 414], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7, max= 64, per=24.86%, avg=30.58, stdev=11.88, samples=401 iops : min= 1, max= 16, avg= 7.06, stdev= 3.07, samples=401 lat (msec) : 10=8.14%, 20=21.06%, 50=15.98%, 100=30.89%, 250=23.34% lat (msec) : 500=0.55%, 1000=0.03% cpu : usr=0.05%, sys=1.33%, ctx=5250, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147449: Tue Sep 8 01:55:37 2026 read: IOPS=7, BW=29.2KiB/s (29.9kB/s)(5940KiB/203762msec) clat (msec): min=5, max=851, avg=25.84, stdev=31.98 lat (msec): min=5, max=851, avg=25.84, stdev=31.98 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 25], 80.00th=[ 34], 90.00th=[ 55], 95.00th=[ 74], | 99.00th=[ 121], 99.50th=[ 136], 99.90th=[ 275], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 96, per=26.19%, avg=30.65, stdev=19.48, samples=377 iops : min= 1, max= 24, avg= 7.08, stdev= 4.95, samples=377 write: IOPS=7, BW=31.2KiB/s (31.9kB/s)(6348KiB/203762msec); 0 zone resets clat (msec): min=30, max=480, avg=103.96, stdev=43.91 lat (msec): min=30, max=480, avg=103.96, stdev=43.91 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 53], 10.00th=[ 59], 20.00th=[ 69], | 30.00th=[ 79], 40.00th=[ 86], 50.00th=[ 94], 60.00th=[ 106], | 70.00th=[ 118], 80.00th=[ 136], 90.00th=[ 161], 95.00th=[ 186], | 99.00th=[ 251], 99.50th=[ 266], 99.90th=[ 359], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 7, max= 64, per=24.95%, avg=30.69, stdev=11.84, samples=402 iops : min= 1, max= 16, avg= 7.09, stdev= 3.03, samples=402 lat (msec) : 10=8.37%, 20=20.15%, 50=16.18%, 100=31.09%, 250=23.67% lat (msec) : 500=0.52%, 1000=0.03% cpu : usr=0.05%, sys=1.26%, ctx=5151, 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=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=147451: Tue Sep 8 01:55:37 2026 read: IOPS=7, BW=29.5KiB/s (30.2kB/s)(6028KiB/204265msec) clat (msec): min=5, max=270, avg=26.63, stdev=26.83 lat (msec): min=5, max=270, avg=26.63, stdev=26.83 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 26], 80.00th=[ 36], 90.00th=[ 58], 95.00th=[ 79], | 99.00th=[ 130], 99.50th=[ 176], 99.90th=[ 253], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 7, max= 135, per=26.40%, avg=30.89, stdev=19.90, samples=380 iops : min= 1, max= 33, avg= 7.14, stdev= 5.00, samples=380 write: IOPS=7, BW=30.6KiB/s (31.4kB/s)(6260KiB/204265msec); 0 zone resets clat (msec): min=34, max=918, avg=104.62, stdev=47.91 lat (msec): min=34, max=918, avg=104.62, stdev=47.91 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 52], 10.00th=[ 58], 20.00th=[ 69], | 30.00th=[ 77], 40.00th=[ 86], 50.00th=[ 95], 60.00th=[ 108], | 70.00th=[ 120], 80.00th=[ 136], 90.00th=[ 165], 95.00th=[ 184], | 99.00th=[ 247], 99.50th=[ 262], 99.90th=[ 401], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 56, per=24.53%, avg=30.17, stdev=11.96, samples=403 iops : min= 1, max= 14, avg= 6.96, stdev= 3.07, samples=403 lat (msec) : 10=8.07%, 20=20.57%, 50=15.98%, 100=31.45%, 250=23.44% lat (msec) : 500=0.46%, 1000=0.03% cpu : usr=0.04%, sys=1.31%, ctx=5233, 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=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=147453: Tue Sep 8 01:55:37 2026 read: IOPS=7, BW=29.9KiB/s (30.7kB/s)(6052KiB/202082msec) clat (msec): min=4, max=311, avg=25.80, stdev=25.97 lat (msec): min=4, max=311, avg=25.81, stdev=25.97 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 17], 60.00th=[ 21], | 70.00th=[ 25], 80.00th=[ 34], 90.00th=[ 58], 95.00th=[ 75], | 99.00th=[ 122], 99.50th=[ 161], 99.90th=[ 255], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 104, per=27.11%, avg=31.72, stdev=19.40, samples=372 iops : min= 1, max= 26, avg= 7.35, stdev= 4.94, samples=372 write: IOPS=7, BW=30.9KiB/s (31.6kB/s)(6236KiB/202082msec); 0 zone resets clat (msec): min=35, max=912, avg=104.32, stdev=49.25 lat (msec): min=35, max=912, avg=104.33, stdev=49.25 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 51], 10.00th=[ 58], 20.00th=[ 69], | 30.00th=[ 77], 40.00th=[ 85], 50.00th=[ 94], 60.00th=[ 106], | 70.00th=[ 118], 80.00th=[ 136], 90.00th=[ 163], 95.00th=[ 188], | 99.00th=[ 257], 99.50th=[ 288], 99.90th=[ 485], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 63, per=24.78%, avg=30.48, stdev=11.92, samples=398 iops : min= 1, max= 15, avg= 7.03, stdev= 3.06, samples=398 lat (msec) : 10=7.94%, 20=21.55%, 50=15.79%, 100=31.45%, 250=22.69% lat (msec) : 500=0.55%, 1000=0.03% cpu : usr=0.04%, sys=1.31%, ctx=5159, 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=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=118KiB/s (120kB/s), 29.2KiB/s-29.9KiB/s (29.9kB/s-30.7kB/s), io=23.4MiB (24.6MB), run=202082-204265msec WRITE: bw=123KiB/s (126kB/s), 30.6KiB/s-31.2KiB/s (31.4kB/s-31.9kB/s), io=24.6MiB (25.7MB), run=202082-204265msec 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=147497: Tue Sep 8 01:56:07 2026 read: IOPS=17, BW=275KiB/s (282kB/s)(5920KiB/21528msec) clat (usec): min=41, max=208223, avg=29866.84, stdev=24619.33 lat (usec): min=41, max=208224, avg=29869.61, stdev=24617.36 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 143], | 30.00th=[ 17957], 40.00th=[ 23987], 50.00th=[ 28181], 60.00th=[ 33162], | 70.00th=[ 39060], 80.00th=[ 47449], 90.00th=[ 58983], 95.00th=[ 66323], | 99.00th=[ 93848], 99.50th=[145753], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 95, max= 476, per=24.93%, avg=274.00, stdev=81.46, samples=42 iops : min= 5, max= 29, avg=16.43, stdev= 5.09, samples=42 write: IOPS=18, BW=296KiB/s (303kB/s)(6368KiB/21528msec); 0 zone resets clat (usec): min=1429, max=190457, avg=26252.76, stdev=28478.16 lat (usec): min=1431, max=190458, avg=26256.94, stdev=28476.51 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1975], 10.00th=[ 2900], 20.00th=[ 4752], | 30.00th=[ 6587], 40.00th=[ 9765], 50.00th=[ 15664], 60.00th=[ 24511], | 70.00th=[ 32113], 80.00th=[ 44303], 90.00th=[ 64750], 95.00th=[ 80217], | 99.00th=[137364], 99.50th=[160433], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 95, max= 475, per=25.64%, avg=296.43, stdev=87.17, samples=42 iops : min= 5, max= 29, avg=17.83, stdev= 5.46, samples=42 lat (usec) : 50=0.65%, 100=7.68%, 250=1.95%, 750=0.13%, 1000=0.13% lat (msec) : 2=2.60%, 4=6.51%, 10=11.98%, 20=12.63%, 50=39.45% lat (msec) : 100=14.71%, 250=1.56% cpu : usr=0.08%, sys=7.57%, ctx=1528, 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=147498: Tue Sep 8 01:56:07 2026 read: IOPS=16, BW=267KiB/s (273kB/s)(5744KiB/21531msec) clat (usec): min=42, max=207450, avg=30171.58, stdev=25548.03 lat (usec): min=42, max=207451, avg=30172.98, stdev=25548.02 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 63], 20.00th=[ 1172], | 30.00th=[ 16909], 40.00th=[ 23200], 50.00th=[ 27395], 60.00th=[ 31589], | 70.00th=[ 39060], 80.00th=[ 48497], 90.00th=[ 61080], 95.00th=[ 67634], | 99.00th=[108528], 99.50th=[177210], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 49, max= 476, per=24.95%, avg=274.24, stdev=99.91, samples=41 iops : min= 3, max= 29, avg=16.44, stdev= 6.31, samples=41 write: IOPS=18, BW=304KiB/s (311kB/s)(6544KiB/21531msec); 0 zone resets clat (usec): min=1289, max=246830, avg=26102.79, stdev=31106.70 lat (usec): min=1291, max=246832, avg=26108.64, stdev=31108.73 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 2114], 10.00th=[ 2769], 20.00th=[ 4228], | 30.00th=[ 6063], 40.00th=[ 8979], 50.00th=[ 15795], 60.00th=[ 22676], | 70.00th=[ 30278], 80.00th=[ 43779], 90.00th=[ 63701], 95.00th=[ 83362], | 99.00th=[137364], 99.50th=[173016], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 95, max= 698, per=26.31%, avg=304.10, stdev=116.40, samples=42 iops : min= 5, max= 43, avg=18.31, stdev= 7.37, samples=42 lat (usec) : 50=0.65%, 100=7.16%, 250=1.04%, 500=0.39% lat (msec) : 2=2.60%, 4=7.29%, 10=13.67%, 20=12.89%, 50=37.50% lat (msec) : 100=14.71%, 250=2.08% cpu : usr=0.07%, sys=7.65%, ctx=1490, 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=147499: Tue Sep 8 01:56:07 2026 read: IOPS=18, BW=293KiB/s (300kB/s)(6256KiB/21386msec) clat (usec): min=32, max=152186, avg=28530.97, stdev=23940.03 lat (usec): min=32, max=152186, avg=28532.44, stdev=23940.20 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 54], 10.00th=[ 65], 20.00th=[ 169], | 30.00th=[ 16581], 40.00th=[ 21103], 50.00th=[ 25297], 60.00th=[ 31065], | 70.00th=[ 38011], 80.00th=[ 45351], 90.00th=[ 57934], 95.00th=[ 67634], | 99.00th=[107480], 99.50th=[143655], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 95, max= 570, per=26.76%, avg=294.07, stdev=99.75, samples=42 iops : min= 5, max= 35, avg=17.67, stdev= 6.30, samples=42 write: IOPS=17, BW=282KiB/s (289kB/s)(6032KiB/21386msec); 0 zone resets clat (usec): min=1413, max=218644, avg=27043.81, stdev=29270.74 lat (usec): min=1415, max=218645, avg=27051.75, stdev=29266.30 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1876], 10.00th=[ 2966], 20.00th=[ 4424], | 30.00th=[ 6783], 40.00th=[ 10159], 50.00th=[ 16909], 60.00th=[ 23725], | 70.00th=[ 34866], 80.00th=[ 45876], 90.00th=[ 69731], 95.00th=[ 78119], | 99.00th=[152044], 99.50th=[162530], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 95, max= 512, per=24.44%, avg=282.50, stdev=105.85, samples=42 iops : min= 5, max= 32, avg=16.95, stdev= 6.72, samples=42 lat (usec) : 50=1.30%, 100=6.51%, 250=2.99%, 500=0.13%, 1000=0.26% lat (msec) : 2=2.99%, 4=6.12%, 10=10.42%, 20=15.36%, 50=36.98% lat (msec) : 100=15.23%, 250=1.69% cpu : usr=0.05%, sys=8.09%, ctx=1549, 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=147500: Tue Sep 8 01:56:07 2026 read: IOPS=17, BW=277KiB/s (283kB/s)(6032KiB/21793msec) clat (usec): min=38, max=234898, avg=28306.24, stdev=26208.96 lat (usec): min=39, max=234899, avg=28312.97, stdev=26203.18 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 55], 10.00th=[ 63], 20.00th=[ 112], | 30.00th=[ 14353], 40.00th=[ 19530], 50.00th=[ 25822], 60.00th=[ 30802], | 70.00th=[ 37487], 80.00th=[ 46924], 90.00th=[ 60556], 95.00th=[ 72877], | 99.00th=[114820], 99.50th=[127402], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 95, max= 544, per=24.76%, avg=272.17, stdev=115.62, samples=42 iops : min= 5, max= 34, avg=16.29, stdev= 7.28, samples=42 write: IOPS=17, BW=287KiB/s (294kB/s)(6256KiB/21793msec); 0 zone resets clat (usec): min=1367, max=198761, avg=28379.66, stdev=33438.32 lat (usec): min=1369, max=198763, avg=28381.50, stdev=33438.37 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 2212], 10.00th=[ 2933], 20.00th=[ 4621], | 30.00th=[ 6718], 40.00th=[ 9503], 50.00th=[ 15664], 60.00th=[ 23987], | 70.00th=[ 33424], 80.00th=[ 46924], 90.00th=[ 72877], 95.00th=[ 98042], | 99.00th=[156238], 99.50th=[193987], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 63, max= 569, per=24.54%, avg=283.67, stdev=107.15, samples=42 iops : min= 3, max= 35, avg=17.02, stdev= 6.76, samples=42 lat (usec) : 50=1.04%, 100=8.46%, 250=2.34%, 500=0.52%, 750=0.13% lat (msec) : 2=2.21%, 4=6.38%, 10=12.89%, 20=14.58%, 50=33.98% lat (msec) : 100=14.45%, 250=2.99% cpu : usr=0.07%, sys=7.41%, ctx=1499, 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=1099KiB/s (1125kB/s), 267KiB/s-293KiB/s (273kB/s-300kB/s), io=23.4MiB (24.5MB), run=21386-21793msec WRITE: bw=1156KiB/s (1184kB/s), 282KiB/s-304KiB/s (289kB/s-311kB/s), io=24.6MiB (25.8MB), run=21386-21793msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147492: Tue Sep 8 01:56:38 2026 read: IOPS=6, BW=110KiB/s (113kB/s)(5920KiB/53625msec) clat (msec): min=5, max=318, avg=30.56, stdev=31.44 lat (msec): min=5, max=318, avg=30.57, stdev=31.44 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 40], 90.00th=[ 65], 95.00th=[ 97], | 99.00th=[ 153], 99.50th=[ 188], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 30, max= 411, per=26.12%, avg=116.51, stdev=73.06, samples=100 iops : min= 1, max= 25, avg= 6.53, stdev= 4.62, samples=100 write: IOPS=7, BW=119KiB/s (122kB/s)(6368KiB/53625msec); 0 zone resets clat (msec): min=43, max=330, avg=106.04, stdev=43.06 lat (msec): min=43, max=330, avg=106.05, stdev=43.06 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 56], 10.00th=[ 63], 20.00th=[ 74], | 30.00th=[ 81], 40.00th=[ 88], 50.00th=[ 99], 60.00th=[ 106], | 70.00th=[ 115], 80.00th=[ 133], 90.00th=[ 159], 95.00th=[ 197], | 99.00th=[ 268], 99.50th=[ 305], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 30, max= 223, per=25.16%, avg=118.01, stdev=45.00, samples=106 iops : min= 1, max= 13, avg= 6.62, stdev= 2.91, samples=106 lat (msec) : 10=3.26%, 20=21.22%, 50=17.58%, 100=31.51%, 250=25.52% lat (msec) : 500=0.91% cpu : usr=0.07%, sys=1.51%, ctx=1327, 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=147493: Tue Sep 8 01:56:38 2026 read: IOPS=6, BW=108KiB/s (110kB/s)(5744KiB/53422msec) clat (msec): min=6, max=192, avg=29.66, stdev=28.53 lat (msec): min=6, max=192, avg=29.66, stdev=28.53 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 28], 80.00th=[ 39], 90.00th=[ 62], 95.00th=[ 93], | 99.00th=[ 157], 99.50th=[ 188], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 30, max= 319, per=25.66%, avg=114.43, stdev=69.34, samples=98 iops : min= 1, max= 19, avg= 6.38, stdev= 4.35, samples=98 write: IOPS=7, BW=122KiB/s (125kB/s)(6544KiB/53422msec); 0 zone resets clat (msec): min=37, max=347, avg=104.17, stdev=44.71 lat (msec): min=37, max=347, avg=104.18, stdev=44.71 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 54], 10.00th=[ 59], 20.00th=[ 69], | 30.00th=[ 78], 40.00th=[ 86], 50.00th=[ 96], 60.00th=[ 106], | 70.00th=[ 115], 80.00th=[ 136], 90.00th=[ 159], 95.00th=[ 194], | 99.00th=[ 271], 99.50th=[ 284], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 31, max= 223, per=25.97%, avg=121.81, stdev=46.57, samples=105 iops : min= 1, max= 13, avg= 6.86, stdev= 3.01, samples=105 lat (msec) : 10=3.26%, 20=19.14%, 50=19.92%, 100=31.90%, 250=25.00% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.48%, ctx=1331, 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=147494: Tue Sep 8 01:56:38 2026 read: IOPS=7, BW=122KiB/s (125kB/s)(6256KiB/51187msec) clat (msec): min=5, max=320, avg=28.48, stdev=31.06 lat (msec): min=5, max=320, avg=28.48, stdev=31.06 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 35], 90.00th=[ 52], 95.00th=[ 84], | 99.00th=[ 148], 99.50th=[ 284], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 30, max= 480, per=28.06%, avg=125.16, stdev=85.10, samples=99 iops : min= 1, max= 30, avg= 7.07, stdev= 5.41, samples=99 write: IOPS=7, BW=118KiB/s (121kB/s)(6032KiB/51187msec); 0 zone resets clat (msec): min=38, max=360, avg=105.99, stdev=46.12 lat (msec): min=38, max=360, avg=105.99, stdev=46.12 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 71], | 30.00th=[ 80], 40.00th=[ 88], 50.00th=[ 96], 60.00th=[ 107], | 70.00th=[ 116], 80.00th=[ 130], 90.00th=[ 159], 95.00th=[ 203], | 99.00th=[ 284], 99.50th=[ 326], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 222, per=25.01%, avg=117.32, stdev=44.73, samples=101 iops : min= 1, max= 13, avg= 6.57, stdev= 2.85, samples=101 lat (msec) : 10=4.82%, 20=22.01%, 50=19.79%, 100=28.91%, 250=23.18% lat (msec) : 500=1.30% cpu : usr=0.05%, sys=1.51%, ctx=1352, 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=147495: Tue Sep 8 01:56:38 2026 read: IOPS=7, BW=114KiB/s (117kB/s)(6032KiB/52888msec) clat (msec): min=6, max=218, avg=29.23, stdev=27.85 lat (msec): min=6, max=218, avg=29.23, stdev=27.85 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 36], 90.00th=[ 65], 95.00th=[ 87], | 99.00th=[ 142], 99.50th=[ 165], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 31, max= 383, per=27.43%, avg=122.32, stdev=75.93, samples=96 iops : min= 1, max= 23, avg= 6.90, stdev= 4.80, samples=96 write: IOPS=7, BW=118KiB/s (121kB/s)(6256KiB/52888msec); 0 zone resets clat (msec): min=38, max=332, avg=106.96, stdev=44.67 lat (msec): min=38, max=332, avg=106.97, stdev=44.67 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 71], | 30.00th=[ 80], 40.00th=[ 90], 50.00th=[ 100], 60.00th=[ 107], | 70.00th=[ 118], 80.00th=[ 133], 90.00th=[ 163], 95.00th=[ 197], | 99.00th=[ 253], 99.50th=[ 326], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 30, max= 192, per=25.19%, avg=118.13, stdev=42.43, samples=104 iops : min= 1, max= 12, avg= 6.62, stdev= 2.76, samples=104 lat (msec) : 10=4.43%, 20=20.57%, 50=18.75%, 100=29.82%, 250=25.78% lat (msec) : 500=0.65% cpu : usr=0.03%, sys=1.51%, ctx=1226, 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=447KiB/s (457kB/s), 108KiB/s-122KiB/s (110kB/s-125kB/s), io=23.4MiB (24.5MB), run=51187-53625msec WRITE: bw=470KiB/s (481kB/s), 118KiB/s-122KiB/s (121kB/s-125kB/s), io=24.6MiB (25.8MB), run=51187-53625msec 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=147515: Tue Sep 8 01:56:54 2026 read: IOPS=1, BW=1324KiB/s (1356kB/s)(7168KiB/5412msec) clat (usec): min=481, max=2731.8k, avg=469039.17, stdev=1003603.19 lat (usec): min=482, max=2731.8k, avg=469040.50, stdev=1003603.84 clat percentiles (usec): | 1.00th=[ 482], 5.00th=[ 482], 10.00th=[ 482], | 20.00th=[ 506], 30.00th=[ 1795], 40.00th=[ 1795], | 50.00th=[ 112722], 60.00th=[ 139461], 70.00th=[ 139461], | 80.00th=[ 295699], 90.00th=[2734687], 95.00th=[2734687], | 99.00th=[2734687], 99.50th=[2734687], 99.90th=[2734687], | 99.95th=[2734687], 99.99th=[2734687] bw ( KiB/s): min= 1984, max= 6131, per=100.00%, avg=4000.33, stdev=2075.86, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=0, BW=946KiB/s (969kB/s)(5120KiB/5412msec); 0 zone resets clat (msec): min=188, max=579, avg=406.96, stdev=161.96 lat (msec): min=188, max=579, avg=407.06, stdev=161.89 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1872, max= 2023, per=41.17%, avg=1955.50, stdev=64.54, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=25.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=10.46%, ctx=629, 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=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=147516: Tue Sep 8 01:56:54 2026 read: IOPS=0, BW=339KiB/s (347kB/s)(2048KiB/6036msec) clat (msec): min=266, max=292, avg=279.35, stdev=18.82 lat (msec): min=266, max=292, avg=279.35, stdev=18.82 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 266], 50.00th=[ 266], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 2000, max= 2023, per=59.30%, avg=2011.50, stdev=16.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1696KiB/s (1737kB/s)(10.0MiB/6036msec); 0 zone resets clat (msec): min=106, max=2724, avg=527.80, stdev=787.19 lat (msec): min=106, max=2724, avg=527.95, stdev=787.23 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 117], | 30.00th=[ 182], 40.00th=[ 213], 50.00th=[ 271], 60.00th=[ 279], | 70.00th=[ 292], 80.00th=[ 542], 90.00th=[ 558], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 1889, max= 5678, per=81.41%, avg=3866.75, stdev=1550.22, samples=4 iops : min= 1, max= 5, avg= 3.00, stdev= 1.63, samples=4 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.02%, sys=11.60%, ctx=167, 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=147517: Tue Sep 8 01:56:54 2026 read: IOPS=1, BW=1204KiB/s (1233kB/s)(6144KiB/5101msec) clat (usec): min=536, max=328611, avg=137727.72, stdev=144688.66 lat (usec): min=538, max=328612, avg=137728.93, stdev=144688.53 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 652], | 30.00th=[ 652], 40.00th=[ 29230], 50.00th=[ 29230], 60.00th=[219153], | 70.00th=[248513], 80.00th=[248513], 90.00th=[329253], 95.00th=[329253], | 99.00th=[329253], 99.50th=[329253], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 2023, max= 3886, per=94.86%, avg=3217.67, stdev=1037.05, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1204KiB/s (1233kB/s)(6144KiB/5101msec); 0 zone resets clat (msec): min=182, max=2792, avg=680.15, stdev=1037.10 lat (msec): min=182, max=2792, avg=680.24, stdev=1037.10 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 220], | 30.00th=[ 220], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 275], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 2802], 95.00th=[ 2802], | 99.00th=[ 2802], 99.50th=[ 2802], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 1872, max= 2782, per=45.37%, avg=2155.00, stdev=422.53, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=16.67% lat (msec) : 50=8.33%, 250=41.67%, 500=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=10.53%, ctx=299, 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=147518: Tue Sep 8 01:56:54 2026 read: IOPS=0, BW=940KiB/s (963kB/s)(5120KiB/5445msec) clat (usec): min=912, max=172623, avg=44652.32, stdev=74248.57 lat (usec): min=913, max=172624, avg=44653.74, stdev=74248.47 clat percentiles (usec): | 1.00th=[ 914], 5.00th=[ 914], 10.00th=[ 914], 20.00th=[ 914], | 30.00th=[ 1205], 40.00th=[ 1205], 50.00th=[ 1434], 60.00th=[ 1434], | 70.00th=[ 46924], 80.00th=[ 46924], 90.00th=[173016], 95.00th=[173016], | 99.00th=[173016], 99.50th=[173016], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 7488, max= 7488, per=100.00%, avg=7488.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1316KiB/s (1348kB/s)(7168KiB/5445msec); 0 zone resets clat (msec): min=268, max=2818, avg=743.91, stdev=920.39 lat (msec): min=268, max=2818, avg=743.99, stdev=920.40 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 296], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 439], 60.00th=[ 510], | 70.00th=[ 510], 80.00th=[ 531], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 1385, max= 2043, per=39.47%, avg=1875.00, stdev=247.69, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (usec) : 1000=8.33% lat (msec) : 2=16.67%, 50=8.33%, 250=8.33%, 500=33.33%, 750=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=8.89%, ctx=110, 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=3393KiB/s (3474kB/s), 339KiB/s-1324KiB/s (347kB/s-1356kB/s), io=20.0MiB (20.0MB), run=5101-6036msec WRITE: bw=4750KiB/s (4864kB/s), 946KiB/s-1696KiB/s (969kB/s-1737kB/s), io=28.0MiB (29.4MB), run=5101-6036msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147520: Tue Sep 8 01:56:55 2026 read: IOPS=1, BW=1032KiB/s (1057kB/s)(7168KiB/6943msec) clat (msec): min=84, max=2478, avg=814.33, stdev=858.59 lat (msec): min=84, max=2478, avg=814.33, stdev=858.59 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 174], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 376], 60.00th=[ 1053], | 70.00th=[ 1053], 80.00th=[ 1250], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 2023, max= 4071, per=86.10%, avg=2539.00, stdev=1021.36, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=737KiB/s (755kB/s)(5120KiB/6943msec); 0 zone resets clat (msec): min=102, max=529, avg=234.28, stdev=174.28 lat (msec): min=102, max=529, avg=234.38, stdev=174.27 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 112], 40.00th=[ 112], 50.00th=[ 194], 60.00th=[ 194], | 70.00th=[ 234], 80.00th=[ 234], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 2048, max= 4087, per=74.29%, avg=3067.50, stdev=1441.79, samples=2 iops : min= 2, max= 3, avg= 2.50, stdev= 0.71, samples=2 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=8.33%, 2000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.61%, ctx=57, 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=147521: Tue Sep 8 01:56:55 2026 read: IOPS=0, BW=315KiB/s (323kB/s)(2048KiB/6500msec) clat (msec): min=165, max=169, avg=167.32, stdev= 2.53 lat (msec): min=165, max=169, avg=167.32, stdev= 2.53 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 169], | 70.00th=[ 169], 80.00th=[ 169], 90.00th=[ 169], 95.00th=[ 169], | 99.00th=[ 169], 99.50th=[ 169], 99.90th=[ 169], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 1643, max= 2048, per=62.58%, avg=1845.50, stdev=286.38, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1575KiB/s (1613kB/s)(10.0MiB/6500msec); 0 zone resets clat (msec): min=128, max=3250, avg=600.95, stdev=939.73 lat (msec): min=128, max=3251, avg=601.04, stdev=939.73 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 169], | 30.00th=[ 218], 40.00th=[ 243], 50.00th=[ 321], 60.00th=[ 330], | 70.00th=[ 338], 80.00th=[ 498], 90.00th=[ 518], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 1976, max= 4071, per=65.47%, avg=2703.33, stdev=1056.59, samples=6 iops : min= 1, max= 3, avg= 1.83, stdev= 0.98, samples=6 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.03%, ctx=99, 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=147522: Tue Sep 8 01:56:55 2026 read: IOPS=0, BW=956KiB/s (979kB/s)(6144KiB/6429msec) clat (msec): min=93, max=746, avg=282.31, stdev=248.17 lat (msec): min=93, max=746, avg=282.31, stdev=248.17 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 102], | 30.00th=[ 102], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 245], | 70.00th=[ 355], 80.00th=[ 355], 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= 2023, max= 2048, per=69.01%, avg=2035.20, stdev= 9.28, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=0, BW=956KiB/s (979kB/s)(6144KiB/6429msec); 0 zone resets clat (msec): min=104, max=3138, avg=769.02, stdev=1168.96 lat (msec): min=104, max=3138, avg=769.12, stdev=1168.96 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 359], | 70.00th=[ 502], 80.00th=[ 502], 90.00th=[ 3138], 95.00th=[ 3138], | 99.00th=[ 3138], 99.50th=[ 3138], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min= 1436, max= 2048, per=46.45%, avg=1917.80, stdev=269.41, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.05%, sys=2.58%, ctx=83, 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=147523: Tue Sep 8 01:56:55 2026 read: IOPS=0, BW=767KiB/s (786kB/s)(5120KiB/6672msec) clat (msec): min=95, max=833, avg=318.67, stdev=302.92 lat (msec): min=95, max=833, avg=318.67, stdev=302.92 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 105], 40.00th=[ 105], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 2031, max= 4071, per=92.12%, avg=2716.67, stdev=1172.92, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1074KiB/s (1100kB/s)(7168KiB/6672msec); 0 zone resets clat (msec): min=146, max=2999, avg=696.69, stdev=1027.00 lat (msec): min=146, max=2999, avg=696.78, stdev=1027.00 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 174], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 363], 60.00th=[ 456], | 70.00th=[ 456], 80.00th=[ 550], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 1510, max= 2039, per=46.46%, avg=1918.20, stdev=229.63, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.09%, ctx=99, 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=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=2950KiB/s (3021kB/s), 315KiB/s-1032KiB/s (323kB/s-1057kB/s), io=20.0MiB (20.0MB), run=6429-6943msec WRITE: bw=4130KiB/s (4229kB/s), 737KiB/s-1575KiB/s (755kB/s-1613kB/s), io=28.0MiB (29.4MB), run=6429-6943msec 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=147535: Tue Sep 8 01:57:08 2026 read: IOPS=1, BW=4781KiB/s (4896kB/s)(12.0MiB/2570msec) clat (msec): min=736, max=918, avg=838.28, stdev=93.19 lat (msec): min=736, max=918, avg=838.28, stdev=93.19 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 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= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=18.06%, ctx=349, 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=147536: Tue Sep 8 01:57:08 2026 read: IOPS=0, BW=1274KiB/s (1305kB/s)(4096KiB/3214msec) clat (nsec): min=801718k, max=801718k, avg=801717599.00, stdev= 0.00 lat (nsec): min=801720k, max=801720k, avg=801719896.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2549KiB/s (2610kB/s)(8192KiB/3214msec); 0 zone resets clat (msec): min=716, max=1645, avg=1180.68, stdev=656.92 lat (msec): min=716, max=1645, avg=1181.05, stdev=656.84 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 1653], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 8143, max= 8143, per=92.35%, avg=8143.00, 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=2.77%, ctx=121, 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=147537: Tue Sep 8 01:57:08 2026 write: IOPS=0, BW=3307KiB/s (3386kB/s)(12.0MiB/3716msec); 0 zone resets clat (msec): min=283, max=1827, avg=1212.73, stdev=818.51 lat (msec): min=285, max=1828, avg=1213.60, stdev=817.79 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 1519], 50.00th=[ 1519], 60.00th=[ 1519], | 70.00th=[ 1821], 80.00th=[ 1821], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 8143, max= 8143, per=92.35%, avg=8143.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.31%, ctx=42, 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=147538: Tue Sep 8 01:57:08 2026 write: IOPS=1, BW=5655KiB/s (5791kB/s)(12.0MiB/2173msec); 0 zone resets clat (msec): min=338, max=1008, avg=697.59, stdev=337.68 lat (msec): min=338, max=1008, avg=697.92, stdev=337.81 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 8175, max= 8175, per=92.71%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.78%, ctx=64, 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=5098KiB/s (5220kB/s), 1274KiB/s-4781KiB/s (1305kB/s-4896kB/s), io=16.0MiB (16.8MB), run=2570-3214msec WRITE: bw=8818KiB/s (9030kB/s), 2549KiB/s-5655KiB/s (2610kB/s-5791kB/s), io=32.0MiB (33.6MB), run=2173-3716msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147530: Tue Sep 8 01:57:08 2026 read: IOPS=0, BW=3727KiB/s (3816kB/s)(12.0MiB/3297msec) clat (msec): min=404, max=1349, avg=1013.19, stdev=528.28 lat (msec): min=404, max=1349, avg=1013.21, stdev=528.29 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 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= 8047, max= 8159, per=100.00%, avg=8103.00, stdev=79.20, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.22%, ctx=43, 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=147531: Tue Sep 8 01:57:08 2026 read: IOPS=0, BW=990KiB/s (1014kB/s)(4096KiB/4136msec) clat (nsec): min=1137.9M, max=1137.9M, avg=1137945348.00, stdev= 0.00 lat (nsec): min=1137.9M, max=1137.9M, avg=1137947873.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1133], 5.00th=[ 1133], 10.00th=[ 1133], 20.00th=[ 1133], | 30.00th=[ 1133], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1981KiB/s (2028kB/s)(8192KiB/4136msec); 0 zone resets clat (msec): min=1150, max=1674, avg=1412.33, stdev=370.94 lat (msec): min=1150, max=1675, avg=1412.82, stdev=370.80 clat percentiles (msec): | 1.00th=[ 1150], 5.00th=[ 1150], 10.00th=[ 1150], 20.00th=[ 1150], | 30.00th=[ 1150], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1670], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=4.21%, ctx=53, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=147533: Tue Sep 8 01:57:08 2026 write: IOPS=1, BW=5545KiB/s (5678kB/s)(12.0MiB/2216msec); 0 zone resets clat (msec): min=522, max=912, avg=698.76, stdev=197.42 lat (msec): min=525, max=912, avg=699.93, stdev=196.36 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 911], 80.00th=[ 911], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7515, max= 8047, per=98.22%, avg=7781.00, stdev=376.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=5.33%, ctx=60, 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=147534: Tue Sep 8 01:57:08 2026 write: IOPS=0, BW=3366KiB/s (3446kB/s)(12.0MiB/3651msec); 0 zone resets clat (msec): min=294, max=2666, avg=1155.16, stdev=1313.19 lat (msec): min=295, max=2666, avg=1157.03, stdev=1311.99 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 2668], 80.00th=[ 2668], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 7515, max= 8094, per=98.52%, avg=7804.50, stdev=409.41, 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=4.00%, ctx=63, 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=3961KiB/s (4056kB/s), 990KiB/s-3727KiB/s (1014kB/s-3816kB/s), io=16.0MiB (16.8MB), run=3297-4136msec WRITE: bw=7923KiB/s (8113kB/s), 1981KiB/s-5545KiB/s (2028kB/s-5678kB/s), io=32.0MiB (33.6MB), run=2216-4136msec