== sanity test 398b: DIO and buffer IO race ============== 14:36:09 (1758825369) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.02143 s, 16.7 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=152518: Thu Sep 25 14:37:16 2025 read: IOPS=26, BW=106KiB/s (109kB/s)(5992KiB/56449msec) clat (usec): min=94, max=736639, avg=19728.09, stdev=22263.63 lat (usec): min=94, max=736640, avg=19728.90, stdev=22263.65 clat percentiles (usec): | 1.00th=[ 334], 5.00th=[ 717], 10.00th=[ 7373], 20.00th=[ 10290], | 30.00th=[ 12387], 40.00th=[ 14877], 50.00th=[ 16909], 60.00th=[ 19792], | 70.00th=[ 22938], 80.00th=[ 27657], 90.00th=[ 34341], 95.00th=[ 40109], | 99.00th=[ 61080], 99.50th=[ 70779], 99.90th=[154141], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 13, max= 184, per=25.65%, avg=106.21, stdev=29.78, samples=112 iops : min= 3, max= 46, avg=26.21, stdev= 7.51, samples=112 write: IOPS=27, BW=112KiB/s (114kB/s)(6296KiB/56449msec); 0 zone resets clat (usec): min=711, max=107440, avg=16939.24, stdev=13826.98 lat (usec): min=712, max=107441, avg=16940.14, stdev=13827.00 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 2376], 10.00th=[ 3261], 20.00th=[ 4883], | 30.00th=[ 7439], 40.00th=[ 10552], 50.00th=[ 13435], 60.00th=[ 17171], | 70.00th=[ 21365], 80.00th=[ 26608], 90.00th=[ 35914], 95.00th=[ 43254], | 99.00th=[ 58983], 99.50th=[ 71828], 99.90th=[ 99091], 99.95th=[107480], | 99.99th=[107480] bw ( KiB/s): min= 47, max= 200, per=25.91%, avg=112.45, stdev=35.58, samples=111 iops : min= 11, max= 50, avg=27.77, stdev= 9.00, samples=111 lat (usec) : 100=0.03%, 250=0.26%, 500=1.17%, 750=1.17%, 1000=0.72% lat (msec) : 2=1.60%, 4=5.99%, 10=18.03%, 20=35.42%, 50=33.14% lat (msec) : 100=2.38%, 250=0.07%, 750=0.03% cpu : usr=0.12%, sys=28.76%, ctx=8922, 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=152519: Thu Sep 25 14:37:16 2025 read: IOPS=25, BW=104KiB/s (106kB/s)(5940KiB/57354msec) clat (usec): min=102, max=179561, avg=19430.64, stdev=12592.90 lat (usec): min=102, max=179561, avg=19431.37, stdev=12592.97 clat percentiles (usec): | 1.00th=[ 355], 5.00th=[ 5014], 10.00th=[ 7963], 20.00th=[ 10159], | 30.00th=[ 12649], 40.00th=[ 14746], 50.00th=[ 17171], 60.00th=[ 20055], | 70.00th=[ 22938], 80.00th=[ 27132], 90.00th=[ 34341], 95.00th=[ 38536], | 99.00th=[ 57934], 99.50th=[ 72877], 99.90th=[129500], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 6, max= 192, per=25.00%, avg=103.50, stdev=32.90, samples=114 iops : min= 1, max= 48, avg=25.54, stdev= 8.36, samples=114 write: IOPS=27, BW=111KiB/s (113kB/s)(6348KiB/57354msec); 0 zone resets clat (usec): min=657, max=704787, avg=17813.44, stdev=22252.42 lat (usec): min=657, max=704787, avg=17814.44, stdev=22252.42 clat percentiles (usec): | 1.00th=[ 922], 5.00th=[ 2409], 10.00th=[ 3195], 20.00th=[ 5080], | 30.00th=[ 7373], 40.00th=[ 10683], 50.00th=[ 14353], 60.00th=[ 17695], | 70.00th=[ 22414], 80.00th=[ 27919], 90.00th=[ 35390], 95.00th=[ 43254], | 99.00th=[ 61604], 99.50th=[ 70779], 99.90th=[117965], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 6, max= 256, per=25.46%, avg=110.51, stdev=38.44, samples=114 iops : min= 1, max= 64, avg=27.29, stdev= 9.69, samples=114 lat (usec) : 250=0.20%, 500=0.91%, 750=0.68%, 1000=0.88% lat (msec) : 2=1.37%, 4=5.70%, 10=18.91%, 20=33.69%, 50=35.61% lat (msec) : 100=1.82%, 250=0.20%, 750=0.03% cpu : usr=0.12%, sys=28.88%, ctx=9053, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152520: Thu Sep 25 14:37:16 2025 read: IOPS=26, BW=104KiB/s (107kB/s)(6028KiB/57890msec) clat (usec): min=104, max=179126, avg=19856.83, stdev=13078.94 lat (usec): min=105, max=179128, avg=19857.68, stdev=13078.96 clat percentiles (usec): | 1.00th=[ 338], 5.00th=[ 3490], 10.00th=[ 7701], 20.00th=[ 10421], | 30.00th=[ 12649], 40.00th=[ 15008], 50.00th=[ 17433], 60.00th=[ 20317], | 70.00th=[ 23987], 80.00th=[ 28181], 90.00th=[ 34866], 95.00th=[ 40633], | 99.00th=[ 61080], 99.50th=[ 71828], 99.90th=[124257], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 23, max= 224, per=25.29%, avg=104.71, stdev=32.01, samples=114 iops : min= 5, max= 56, avg=25.84, stdev= 8.08, samples=114 write: IOPS=27, BW=108KiB/s (111kB/s)(6260KiB/57890msec); 0 zone resets clat (usec): min=707, max=737535, avg=17727.12, stdev=22941.56 lat (usec): min=708, max=737536, avg=17728.88, stdev=22942.26 clat percentiles (usec): | 1.00th=[ 889], 5.00th=[ 2212], 10.00th=[ 3097], 20.00th=[ 4883], | 30.00th=[ 7308], 40.00th=[ 10945], 50.00th=[ 14222], 60.00th=[ 18220], | 70.00th=[ 22414], 80.00th=[ 27657], 90.00th=[ 34866], 95.00th=[ 43254], | 99.00th=[ 59507], 99.50th=[ 70779], 99.90th=[147850], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 39, max= 208, per=24.98%, avg=108.43, stdev=35.29, samples=114 iops : min= 9, max= 52, avg=26.77, stdev= 8.93, samples=114 lat (usec) : 250=0.26%, 500=0.88%, 750=0.98%, 1000=0.75% lat (msec) : 2=1.56%, 4=6.32%, 10=17.32%, 20=33.59%, 50=35.64% lat (msec) : 100=2.47%, 250=0.20%, 750=0.03% cpu : usr=0.10%, sys=28.48%, ctx=8914, 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=152521: Thu Sep 25 14:37:16 2025 read: IOPS=26, BW=106KiB/s (109kB/s)(6052KiB/56919msec) clat (usec): min=101, max=127309, avg=19036.45, stdev=11766.03 lat (usec): min=102, max=127311, avg=19037.16, stdev=11766.08 clat percentiles (usec): | 1.00th=[ 322], 5.00th=[ 1270], 10.00th=[ 7635], 20.00th=[ 10552], | 30.00th=[ 12649], 40.00th=[ 14746], 50.00th=[ 16909], 60.00th=[ 19530], | 70.00th=[ 22676], 80.00th=[ 26608], 90.00th=[ 32900], 95.00th=[ 38536], | 99.00th=[ 60556], 99.50th=[ 71828], 99.90th=[111674], 99.95th=[127402], | 99.99th=[127402] bw ( KiB/s): min= 31, max= 191, per=25.90%, avg=107.23, stdev=32.53, samples=112 iops : min= 7, max= 47, avg=26.46, stdev= 8.20, samples=112 write: IOPS=27, BW=110KiB/s (112kB/s)(6236KiB/56919msec); 0 zone resets clat (usec): min=566, max=744482, avg=17892.67, stdev=23207.76 lat (usec): min=566, max=744483, avg=17893.60, stdev=23207.79 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 2376], 10.00th=[ 3163], 20.00th=[ 4883], | 30.00th=[ 7439], 40.00th=[ 11076], 50.00th=[ 14746], 60.00th=[ 18220], | 70.00th=[ 22414], 80.00th=[ 28181], 90.00th=[ 34866], 95.00th=[ 43779], | 99.00th=[ 61604], 99.50th=[ 71828], 99.90th=[149947], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 31, max= 216, per=25.43%, avg=110.37, stdev=33.63, samples=112 iops : min= 7, max= 54, avg=27.25, stdev= 8.50, samples=112 lat (usec) : 250=0.36%, 500=0.91%, 750=0.62%, 1000=1.04% lat (msec) : 2=1.50%, 4=6.02%, 10=16.96%, 20=36.07%, 50=33.95% lat (msec) : 100=2.41%, 250=0.13%, 750=0.03% cpu : usr=0.11%, sys=28.43%, ctx=9097, 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=415KiB/s (425kB/s), 104KiB/s-106KiB/s (106kB/s-109kB/s), io=23.4MiB (24.6MB), run=56449-57890msec WRITE: bw=434KiB/s (445kB/s), 108KiB/s-112KiB/s (111kB/s-114kB/s), io=24.6MiB (25.7MB), run=56449-57890msec rand-rw: (groupid=0, jobs=1): err= 0: pid=152523: Thu Sep 25 14:37:47 2025 read: IOPS=16, BW=67.8KiB/s (69.4kB/s)(5992KiB/88368msec) clat (msec): min=2, max=740, avg=18.59, stdev=23.99 lat (msec): min=2, max=740, avg=18.59, stdev=23.99 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 20], 80.00th=[ 25], 90.00th=[ 36], 95.00th=[ 50], | 99.00th=[ 75], 99.50th=[ 91], 99.90th=[ 146], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 15, max= 152, per=25.38%, avg=68.52, stdev=33.31, samples=174 iops : min= 3, max= 38, avg=16.87, stdev= 8.46, samples=174 write: IOPS=17, BW=71.2KiB/s (72.0kB/s)(6296KiB/88368msec); 0 zone resets clat (msec): min=13, max=251, avg=38.36, stdev=18.54 lat (msec): min=13, max=251, avg=38.36, stdev=18.54 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 28], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 42], 80.00th=[ 50], 90.00th=[ 62], 95.00th=[ 71], | 99.00th=[ 101], 99.50th=[ 125], 99.90th=[ 192], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 15, max= 136, per=25.29%, avg=71.57, stdev=29.31, samples=175 iops : min= 3, max= 34, avg=17.63, stdev= 7.52, samples=175 lat (msec) : 4=1.76%, 10=14.06%, 20=20.35%, 50=51.82%, 100=11.30% lat (msec) : 250=0.65%, 500=0.03%, 750=0.03% cpu : usr=0.07%, sys=9.50%, ctx=6137, 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=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=152524: Thu Sep 25 14:37:47 2025 read: IOPS=16, BW=66.0KiB/s (68.6kB/s)(5940KiB/88698msec) clat (msec): min=2, max=712, avg=18.36, stdev=23.58 lat (msec): min=2, max=712, avg=18.36, stdev=23.58 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 17], | 70.00th=[ 20], 80.00th=[ 25], 90.00th=[ 35], 95.00th=[ 46], | 99.00th=[ 81], 99.50th=[ 105], 99.90th=[ 140], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7, max= 184, per=24.85%, avg=67.09, stdev=35.25, samples=175 iops : min= 1, max= 46, avg=16.51, stdev= 8.95, samples=175 write: IOPS=17, BW=71.6KiB/s (73.3kB/s)(6348KiB/88698msec); 0 zone resets clat (msec): min=13, max=251, avg=38.62, stdev=18.60 lat (msec): min=13, max=251, avg=38.62, stdev=18.60 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 28], 40.00th=[ 31], 50.00th=[ 34], 60.00th=[ 37], | 70.00th=[ 42], 80.00th=[ 51], 90.00th=[ 63], 95.00th=[ 74], | 99.00th=[ 99], 99.50th=[ 120], 99.90th=[ 186], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 15, max= 144, per=25.29%, avg=71.57, stdev=29.59, samples=175 iops : min= 3, max= 36, avg=17.63, stdev= 7.57, samples=175 lat (msec) : 4=1.86%, 10=14.13%, 20=20.90%, 50=50.42%, 100=11.91% lat (msec) : 250=0.72%, 500=0.03%, 750=0.03% cpu : usr=0.07%, sys=9.32%, ctx=6258, 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=152525: Thu Sep 25 14:37:47 2025 read: IOPS=16, BW=67.9KiB/s (69.6kB/s)(6028KiB/88745msec) clat (msec): min=2, max=148, avg=18.36, stdev=16.19 lat (msec): min=2, max=148, avg=18.36, stdev=16.19 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 21], 80.00th=[ 26], 90.00th=[ 37], 95.00th=[ 50], | 99.00th=[ 83], 99.50th=[ 103], 99.90th=[ 128], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 16, max= 176, per=25.17%, avg=67.95, stdev=33.65, samples=175 iops : min= 4, max= 44, avg=16.73, stdev= 8.57, samples=175 write: IOPS=17, BW=70.5KiB/s (72.2kB/s)(6260KiB/88745msec); 0 zone resets clat (msec): min=13, max=729, avg=38.94, stdev=25.74 lat (msec): min=13, max=729, avg=38.94, stdev=25.74 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 25], | 30.00th=[ 28], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 42], 80.00th=[ 50], 90.00th=[ 62], 95.00th=[ 75], | 99.00th=[ 106], 99.50th=[ 120], 99.90th=[ 197], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 16, max= 144, per=24.88%, avg=70.42, stdev=30.41, samples=175 iops : min= 4, max= 36, avg=17.35, stdev= 7.78, samples=175 lat (msec) : 4=1.92%, 10=15.30%, 20=18.85%, 50=51.53%, 100=11.46% lat (msec) : 250=0.91%, 750=0.03% cpu : usr=0.09%, sys=9.29%, ctx=6197, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152526: Thu Sep 25 14:37:47 2025 read: IOPS=17, BW=68.4KiB/s (70.0kB/s)(6052KiB/88470msec) clat (msec): min=2, max=190, avg=18.52, stdev=16.30 lat (msec): min=2, max=190, avg=18.53, stdev=16.30 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 26], 90.00th=[ 37], 95.00th=[ 51], | 99.00th=[ 84], 99.50th=[ 104], 99.90th=[ 126], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 8, max= 216, per=25.46%, avg=68.73, stdev=34.75, samples=175 iops : min= 2, max= 54, avg=16.93, stdev= 8.83, samples=175 write: IOPS=17, BW=70.5KiB/s (72.2kB/s)(6236KiB/88470msec); 0 zone resets clat (msec): min=15, max=730, avg=38.68, stdev=24.86 lat (msec): min=15, max=730, avg=38.68, stdev=24.86 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 22], 10.00th=[ 23], 20.00th=[ 25], | 30.00th=[ 28], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 42], 80.00th=[ 50], 90.00th=[ 63], 95.00th=[ 73], | 99.00th=[ 99], 99.50th=[ 124], 99.90th=[ 192], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 23, max= 152, per=24.98%, avg=70.70, stdev=29.63, samples=175 iops : min= 5, max= 38, avg=17.42, stdev= 7.59, samples=175 lat (msec) : 4=2.21%, 10=13.64%, 20=19.63%, 50=52.15%, 100=11.62% lat (msec) : 250=0.72%, 750=0.03% cpu : usr=0.09%, sys=9.44%, ctx=6286, 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=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=271KiB/s (277kB/s), 66.0KiB/s-68.4KiB/s (68.6kB/s-70.0kB/s), io=23.4MiB (24.6MB), run=88368-88745msec WRITE: bw=283KiB/s (290kB/s), 70.5KiB/s-71.6KiB/s (72.2kB/s-73.3kB/s), io=24.6MiB (25.7MB), run=88368-88745msec 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=152558: Thu Sep 25 14:38:11 2025 read: IOPS=21, BW=346KiB/s (354kB/s)(5920KiB/17103msec) clat (usec): min=190, max=66827, avg=22748.28, stdev=12398.62 lat (usec): min=191, max=66827, avg=22749.19, stdev=12398.67 clat percentiles (usec): | 1.00th=[ 359], 5.00th=[ 619], 10.00th=[ 1106], 20.00th=[13304], | 30.00th=[16450], 40.00th=[19530], 50.00th=[22152], 60.00th=[25560], | 70.00th=[28705], 80.00th=[32637], 90.00th=[39060], 95.00th=[42730], | 99.00th=[57934], 99.50th=[61080], 99.90th=[66847], 99.95th=[66847], | 99.99th=[66847] bw ( KiB/s): min= 160, max= 576, per=24.69%, avg=340.94, stdev=96.45, samples=33 iops : min= 10, max= 36, avg=20.70, stdev= 6.04, samples=33 write: IOPS=23, BW=372KiB/s (381kB/s)(6368KiB/17103msec); 0 zone resets clat (usec): min=1031, max=121917, avg=21726.41, stdev=14599.90 lat (usec): min=1032, max=121919, avg=21727.93, stdev=14599.97 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 27], 80.00th=[ 33], 90.00th=[ 41], 95.00th=[ 49], | 99.00th=[ 73], 99.50th=[ 82], 99.90th=[ 123], 99.95th=[ 123], | 99.99th=[ 123] bw ( KiB/s): min= 64, max= 574, per=25.52%, avg=370.82, stdev=99.53, samples=33 iops : min= 4, max= 35, avg=22.58, stdev= 6.08, samples=33 lat (usec) : 250=0.13%, 500=1.04%, 750=2.73%, 1000=0.65% lat (msec) : 2=0.65%, 4=0.91%, 10=12.76%, 20=26.82%, 50=51.43% lat (msec) : 100=2.73%, 250=0.13% cpu : usr=0.11%, sys=32.98%, ctx=2683, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152559: Thu Sep 25 14:38:11 2025 read: IOPS=20, BW=332KiB/s (340kB/s)(5744KiB/17276msec) clat (usec): min=103, max=83816, avg=23066.87, stdev=13732.55 lat (usec): min=104, max=83817, avg=23067.84, stdev=13732.50 clat percentiles (usec): | 1.00th=[ 178], 5.00th=[ 570], 10.00th=[ 1762], 20.00th=[13829], | 30.00th=[16581], 40.00th=[18744], 50.00th=[21365], 60.00th=[24773], | 70.00th=[28443], 80.00th=[32375], 90.00th=[40109], 95.00th=[47973], | 99.00th=[71828], 99.50th=[76022], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 127, max= 510, per=24.01%, avg=331.56, stdev=94.22, samples=34 iops : min= 7, max= 31, avg=20.09, stdev= 5.91, samples=34 write: IOPS=23, BW=379KiB/s (388kB/s)(6544KiB/17276msec); 0 zone resets clat (usec): min=1090, max=109931, avg=21859.37, stdev=15167.08 lat (usec): min=1091, max=109933, avg=21861.01, stdev=15167.12 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 33], 90.00th=[ 44], 95.00th=[ 51], | 99.00th=[ 65], 99.50th=[ 73], 99.90th=[ 110], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 223, max= 702, per=25.95%, avg=377.06, stdev=115.13, samples=34 iops : min= 13, max= 43, avg=22.94, stdev= 7.16, samples=34 lat (usec) : 250=0.52%, 500=1.17%, 750=1.69%, 1000=0.78% lat (msec) : 2=1.17%, 4=0.78%, 10=15.23%, 20=28.52%, 50=45.70% lat (msec) : 100=4.30%, 250=0.13% cpu : usr=0.10%, sys=32.79%, ctx=2806, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152560: Thu Sep 25 14:38:11 2025 read: IOPS=22, BW=361KiB/s (370kB/s)(6256KiB/17335msec) clat (usec): min=115, max=110475, avg=23624.74, stdev=13965.41 lat (usec): min=116, max=110476, avg=23625.73, stdev=13965.41 clat percentiles (usec): | 1.00th=[ 293], 5.00th=[ 619], 10.00th=[ 1037], 20.00th=[ 14091], | 30.00th=[ 17171], 40.00th=[ 20055], 50.00th=[ 23200], 60.00th=[ 26346], | 70.00th=[ 29230], 80.00th=[ 33162], 90.00th=[ 38011], 95.00th=[ 43254], | 99.00th=[ 73925], 99.50th=[ 79168], 99.90th=[110625], 99.95th=[110625], | 99.99th=[110625] bw ( KiB/s): min= 191, max= 608, per=26.01%, avg=359.21, stdev=93.92, samples=34 iops : min= 11, max= 38, avg=21.82, stdev= 5.97, samples=34 write: IOPS=21, BW=348KiB/s (356kB/s)(6032KiB/17335msec); 0 zone resets clat (usec): min=1076, max=103275, avg=21326.17, stdev=15708.80 lat (usec): min=1077, max=103276, avg=21327.91, stdev=15708.99 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 3982], 10.00th=[ 5538], 20.00th=[ 7701], | 30.00th=[ 11076], 40.00th=[ 13960], 50.00th=[ 17695], 60.00th=[ 21365], | 70.00th=[ 26346], 80.00th=[ 32900], 90.00th=[ 42730], 95.00th=[ 51119], | 99.00th=[ 65799], 99.50th=[ 96994], 99.90th=[103285], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 159, max= 764, per=23.41%, avg=340.09, stdev=123.64, samples=34 iops : min= 9, max= 47, avg=20.62, stdev= 7.69, samples=34 lat (usec) : 250=0.39%, 500=1.17%, 750=2.47%, 1000=0.91% lat (msec) : 2=1.69%, 4=1.43%, 10=11.46%, 20=29.04%, 50=47.40% lat (msec) : 100=3.78%, 250=0.26% cpu : usr=0.09%, sys=31.95%, ctx=2741, 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=152561: Thu Sep 25 14:38:11 2025 read: IOPS=22, BW=360KiB/s (369kB/s)(6032KiB/16743msec) clat (usec): min=119, max=80299, avg=22468.09, stdev=13264.15 lat (usec): min=120, max=80300, avg=22469.19, stdev=13264.09 clat percentiles (usec): | 1.00th=[ 343], 5.00th=[ 570], 10.00th=[ 758], 20.00th=[14222], | 30.00th=[16712], 40.00th=[19006], 50.00th=[21890], 60.00th=[24511], | 70.00th=[28181], 80.00th=[32900], 90.00th=[38011], 95.00th=[45876], | 99.00th=[57934], 99.50th=[70779], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 191, max= 574, per=26.01%, avg=359.15, stdev=101.58, samples=33 iops : min= 11, max= 35, avg=21.85, stdev= 6.28, samples=33 write: IOPS=23, BW=374KiB/s (383kB/s)(6256KiB/16743msec); 0 zone resets clat (usec): min=1213, max=122141, avg=21088.85, stdev=15519.56 lat (usec): min=1215, max=122142, avg=21090.51, stdev=15519.58 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 4948], 10.00th=[ 6325], 20.00th=[ 8160], | 30.00th=[ 10945], 40.00th=[ 14091], 50.00th=[ 18482], 60.00th=[ 21365], | 70.00th=[ 25560], 80.00th=[ 31851], 90.00th=[ 39584], 95.00th=[ 46924], | 99.00th=[ 86508], 99.50th=[ 99091], 99.90th=[122160], 99.95th=[122160], | 99.99th=[122160] bw ( KiB/s): min= 191, max= 542, per=25.81%, avg=375.09, stdev=86.41, samples=33 iops : min= 11, max= 33, avg=22.82, stdev= 5.39, samples=33 lat (usec) : 250=0.26%, 500=1.30%, 750=3.12%, 1000=1.30% lat (msec) : 2=0.78%, 4=1.04%, 10=13.15%, 20=29.04%, 50=46.48% lat (msec) : 100=3.39%, 250=0.13% cpu : usr=0.11%, sys=33.23%, ctx=2775, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1382KiB/s (1415kB/s), 332KiB/s-361KiB/s (340kB/s-370kB/s), io=23.4MiB (24.5MB), run=16743-17335msec WRITE: bw=1454KiB/s (1489kB/s), 348KiB/s-379KiB/s (356kB/s-388kB/s), io=24.6MiB (25.8MB), run=16743-17335msec rand-rw: (groupid=0, jobs=1): err= 0: pid=152563: Thu Sep 25 14:38:16 2025 read: IOPS=16, BW=263KiB/s (270kB/s)(5920KiB/22485msec) clat (msec): min=3, max=134, avg=19.20, stdev=19.53 lat (msec): min=3, max=134, avg=19.20, stdev=19.53 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 29], 90.00th=[ 48], 95.00th=[ 62], | 99.00th=[ 92], 99.50th=[ 104], 99.90th=[ 136], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 63, max= 768, per=24.55%, avg=257.55, stdev=162.32, samples=44 iops : min= 3, max= 48, avg=15.59, stdev=10.38, samples=44 write: IOPS=17, BW=283KiB/s (290kB/s)(6368KiB/22485msec); 0 zone resets clat (msec): min=15, max=132, avg=38.47, stdev=20.99 lat (msec): min=15, max=132, avg=38.47, stdev=20.99 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 46], 80.00th=[ 54], 90.00th=[ 65], 95.00th=[ 80], | 99.00th=[ 123], 99.50th=[ 132], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 95, max= 608, per=25.45%, avg=280.66, stdev=158.95, samples=44 iops : min= 5, max= 38, avg=17.02, stdev=10.23, samples=44 lat (msec) : 4=3.52%, 10=17.19%, 20=19.14%, 50=43.75%, 100=15.10% lat (msec) : 250=1.30% cpu : usr=0.07%, sys=11.35%, ctx=1707, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152564: Thu Sep 25 14:38:16 2025 read: IOPS=15, BW=252KiB/s (258kB/s)(5744KiB/22832msec) clat (msec): min=3, max=126, avg=19.10, stdev=20.37 lat (msec): min=3, max=126, avg=19.10, stdev=20.37 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 28], 90.00th=[ 50], 95.00th=[ 63], | 99.00th=[ 91], 99.50th=[ 121], 99.90th=[ 128], 99.95th=[ 128], | 99.99th=[ 128] bw ( KiB/s): min= 31, max= 672, per=23.77%, avg=249.36, stdev=161.06, samples=45 iops : min= 1, max= 42, avg=15.09, stdev=10.30, samples=45 write: IOPS=17, BW=287KiB/s (293kB/s)(6544KiB/22832msec); 0 zone resets clat (msec): min=12, max=139, avg=38.78, stdev=21.75 lat (msec): min=12, max=139, avg=38.78, stdev=21.75 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 53], 90.00th=[ 71], 95.00th=[ 83], | 99.00th=[ 120], 99.50th=[ 126], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 126, max= 640, per=25.59%, avg=282.31, stdev=160.70, samples=45 iops : min= 7, max= 40, avg=17.16, stdev=10.32, samples=45 lat (msec) : 4=2.86%, 10=18.23%, 20=19.40%, 50=43.49%, 100=14.45% lat (msec) : 250=1.56% cpu : usr=0.08%, sys=11.21%, ctx=1697, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152565: Thu Sep 25 14:38:16 2025 read: IOPS=17, BW=278KiB/s (284kB/s)(6256KiB/22544msec) clat (msec): min=2, max=160, avg=18.67, stdev=19.80 lat (msec): min=2, max=160, avg=18.67, stdev=19.80 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 12], 60.00th=[ 16], | 70.00th=[ 21], 80.00th=[ 29], 90.00th=[ 42], 95.00th=[ 60], | 99.00th=[ 94], 99.50th=[ 125], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 95, max= 928, per=26.35%, avg=276.45, stdev=207.72, samples=44 iops : min= 5, max= 58, avg=16.77, stdev=13.24, samples=44 write: IOPS=16, BW=268KiB/s (274kB/s)(6032KiB/22544msec); 0 zone resets clat (msec): min=14, max=135, avg=40.14, stdev=23.79 lat (msec): min=14, max=135, avg=40.15, stdev=23.79 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 46], 80.00th=[ 56], 90.00th=[ 78], 95.00th=[ 89], | 99.00th=[ 117], 99.50th=[ 133], 99.90th=[ 136], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 63, max= 608, per=23.80%, avg=262.50, stdev=155.27, samples=44 iops : min= 3, max= 38, avg=15.89, stdev= 9.95, samples=44 lat (msec) : 4=1.82%, 10=21.48%, 20=19.14%, 50=41.15%, 100=14.58% lat (msec) : 250=1.82% cpu : usr=0.10%, sys=11.18%, ctx=1747, 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=152566: Thu Sep 25 14:38:16 2025 read: IOPS=16, BW=267KiB/s (274kB/s)(6032KiB/22571msec) clat (msec): min=3, max=146, avg=20.11, stdev=21.96 lat (msec): min=3, max=146, avg=20.11, stdev=21.96 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 5], | 30.00th=[ 7], 40.00th=[ 8], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 30], 90.00th=[ 50], 95.00th=[ 67], | 99.00th=[ 111], 99.50th=[ 138], 99.90th=[ 148], 99.95th=[ 148], | 99.99th=[ 148] bw ( KiB/s): min= 95, max= 672, per=24.87%, avg=260.93, stdev=163.10, samples=44 iops : min= 5, max= 42, avg=15.80, stdev=10.40, samples=44 write: IOPS=17, BW=277KiB/s (284kB/s)(6256KiB/22571msec); 0 zone resets clat (msec): min=14, max=137, avg=38.04, stdev=22.38 lat (msec): min=14, max=137, avg=38.04, stdev=22.38 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 19], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 53], 90.00th=[ 67], 95.00th=[ 84], | 99.00th=[ 123], 99.50th=[ 138], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 95, max= 672, per=24.71%, avg=272.55, stdev=162.95, samples=44 iops : min= 5, max= 42, avg=16.52, stdev=10.47, samples=44 lat (msec) : 4=3.91%, 10=17.32%, 20=20.57%, 50=41.80%, 100=14.58% lat (msec) : 250=1.82% cpu : usr=0.04%, sys=11.53%, ctx=1732, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1049KiB/s (1074kB/s), 252KiB/s-278KiB/s (258kB/s-284kB/s), io=23.4MiB (24.5MB), run=22485-22832msec WRITE: bw=1104KiB/s (1130kB/s), 268KiB/s-287KiB/s (274kB/s-293kB/s), io=24.6MiB (25.8MB), run=22485-22832msec 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=152574: Thu Sep 25 14:38:25 2025 read: IOPS=3, BW=3458KiB/s (3541kB/s)(7168KiB/2073msec) clat (msec): min=50, max=513, avg=184.66, stdev=195.24 lat (msec): min=50, max=513, avg=184.66, stdev=195.24 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 55], | 30.00th=[ 55], 40.00th=[ 55], 50.00th=[ 58], 60.00th=[ 150], | 70.00th=[ 150], 80.00th=[ 414], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 1950, max= 6918, per=53.38%, avg=3638.67, stdev=2840.41, samples=3 iops : min= 1, max= 6, avg= 3.00, stdev= 2.65, samples=3 write: IOPS=2, BW=2470KiB/s (2529kB/s)(5120KiB/2073msec); 0 zone resets clat (msec): min=53, max=232, avg=151.45, stdev=79.11 lat (msec): min=53, max=232, avg=151.51, stdev=79.11 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 54], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 232], 80.00th=[ 232], 90.00th=[ 232], 95.00th=[ 232], | 99.00th=[ 232], 99.50th=[ 232], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 1729, max= 5851, per=33.63%, avg=3209.33, stdev=2293.30, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 lat (msec) : 100=41.67%, 250=41.67%, 500=8.33%, 750=8.33% cpu : usr=0.05%, sys=16.94%, ctx=81, 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=152575: Thu Sep 25 14:38:25 2025 read: IOPS=0, BW=682KiB/s (698kB/s)(2048KiB/3004msec) clat (msec): min=45, max=686, avg=365.99, stdev=453.75 lat (msec): min=45, max=686, avg=365.99, stdev=453.75 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 46], 10.00th=[ 46], 20.00th=[ 46], | 30.00th=[ 46], 40.00th=[ 46], 50.00th=[ 46], 60.00th=[ 684], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1729, max= 2003, per=27.37%, avg=1866.00, stdev=193.75, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3409KiB/s (3491kB/s)(10.0MiB/3004msec); 0 zone resets clat (msec): min=50, max=712, avg=226.31, stdev=193.51 lat (msec): min=50, max=712, avg=226.37, stdev=193.51 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 71], | 30.00th=[ 91], 40.00th=[ 101], 50.00th=[ 205], 60.00th=[ 209], | 70.00th=[ 226], 80.00th=[ 300], 90.00th=[ 300], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1950, max= 6918, per=39.21%, avg=3741.75, stdev=2341.49, samples=4 iops : min= 1, max= 6, avg= 3.00, stdev= 2.45, samples=4 lat (msec) : 50=8.33%, 100=33.33%, 250=25.00%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=14.89%, ctx=125, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=152576: Thu Sep 25 14:38:25 2025 read: IOPS=2, BW=2817KiB/s (2885kB/s)(6144KiB/2181msec) clat (msec): min=92, max=333, avg=187.22, stdev=91.96 lat (msec): min=92, max=333, avg=187.23, stdev=91.97 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 115], | 30.00th=[ 115], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 188], | 70.00th=[ 255], 80.00th=[ 255], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 3447, max= 5851, per=68.20%, avg=4649.00, stdev=1699.88, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2817KiB/s (2885kB/s)(6144KiB/2181msec); 0 zone resets clat (msec): min=73, max=438, avg=172.37, stdev=152.20 lat (msec): min=73, max=438, avg=172.43, stdev=152.21 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 75], | 30.00th=[ 75], 40.00th=[ 84], 50.00th=[ 84], 60.00th=[ 88], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 439], 95.00th=[ 439], | 99.00th=[ 439], 99.50th=[ 439], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 1950, max= 5171, per=29.26%, avg=2793.00, stdev=1585.84, samples=4 iops : min= 1, max= 5, avg= 2.25, stdev= 1.89, samples=4 lat (msec) : 100=41.67%, 250=25.00%, 500=33.33% cpu : usr=0.00%, sys=16.06%, ctx=86, 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=152577: Thu Sep 25 14:38:25 2025 read: IOPS=1, BW=1950KiB/s (1997kB/s)(5120KiB/2626msec) clat (msec): min=59, max=458, avg=215.81, stdev=165.28 lat (msec): min=59, max=458, avg=215.81, stdev=165.28 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 60], 10.00th=[ 60], 20.00th=[ 60], | 30.00th=[ 112], 40.00th=[ 112], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 313], 80.00th=[ 313], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 2003, max= 5851, per=57.61%, avg=3927.00, stdev=2720.95, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2730KiB/s (2795kB/s)(7168KiB/2626msec); 0 zone resets clat (msec): min=84, max=426, avg=219.37, stdev=136.24 lat (msec): min=84, max=426, avg=219.43, stdev=136.23 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 90], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 197], 60.00th=[ 213], | 70.00th=[ 213], 80.00th=[ 384], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 2048, max= 6144, per=47.14%, avg=4499.00, stdev=2163.68, samples=3 iops : min= 2, max= 6, avg= 4.33, stdev= 2.08, samples=3 lat (msec) : 100=25.00%, 250=41.67%, 500=33.33% cpu : usr=0.00%, sys=18.02%, ctx=96, 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=6818KiB/s (6981kB/s), 682KiB/s-3458KiB/s (698kB/s-3541kB/s), io=20.0MiB (20.0MB), run=2073-3004msec WRITE: bw=9545KiB/s (9774kB/s), 2470KiB/s-3409KiB/s (2529kB/s-3491kB/s), io=28.0MiB (29.4MB), run=2073-3004msec rand-rw: (groupid=0, jobs=1): err= 0: pid=152579: Thu Sep 25 14:38:25 2025 read: IOPS=3, BW=3170KiB/s (3246kB/s)(7168KiB/2261msec) clat (usec): min=837, max=285483, avg=155090.17, stdev=93728.00 lat (usec): min=837, max=285483, avg=155090.96, stdev=93728.07 clat percentiles (usec): | 1.00th=[ 840], 5.00th=[ 840], 10.00th=[ 840], 20.00th=[ 87557], | 30.00th=[139461], 40.00th=[139461], 50.00th=[147850], 60.00th=[189793], | 70.00th=[189793], 80.00th=[231736], 90.00th=[287310], 95.00th=[287310], | 99.00th=[287310], 99.50th=[287310], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 1984, max= 5885, per=41.70%, avg=2990.00, stdev=1930.22, samples=4 iops : min= 1, max= 5, avg= 2.25, stdev= 1.89, samples=4 write: IOPS=2, BW=2264KiB/s (2319kB/s)(5120KiB/2261msec); 0 zone resets clat (msec): min=150, max=420, avg=234.68, stdev=111.15 lat (msec): min=150, max=420, avg=234.74, stdev=111.15 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 190], 60.00th=[ 190], | 70.00th=[ 251], 80.00th=[ 251], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 2048, max= 5953, per=39.85%, avg=4000.50, stdev=2761.25, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 lat (usec) : 1000=8.33% lat (msec) : 100=8.33%, 250=58.33%, 500=25.00% cpu : usr=0.00%, sys=46.15%, ctx=1032, 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=152580: Thu Sep 25 14:38:25 2025 read: IOPS=0, BW=717KiB/s (734kB/s)(2048KiB/2856msec) clat (msec): min=90, max=317, avg=203.93, stdev=160.58 lat (msec): min=90, max=317, avg=203.93, stdev=160.58 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 91], | 30.00th=[ 91], 40.00th=[ 91], 50.00th=[ 91], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 1917, max= 1984, per=27.20%, avg=1950.50, stdev=47.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3585KiB/s (3671kB/s)(10.0MiB/2856msec); 0 zone resets clat (msec): min=48, max=558, avg=244.60, stdev=190.04 lat (msec): min=49, max=558, avg=244.67, stdev=190.03 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 84], | 30.00th=[ 114], 40.00th=[ 115], 50.00th=[ 146], 60.00th=[ 155], | 70.00th=[ 300], 80.00th=[ 388], 90.00th=[ 542], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1917, max= 4096, per=30.25%, avg=3037.00, stdev=1218.81, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.29, samples=4 lat (msec) : 50=8.33%, 100=16.67%, 250=33.33%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=44.03%, ctx=416, 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=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=152581: Thu Sep 25 14:38:25 2025 read: IOPS=2, BW=2364KiB/s (2421kB/s)(6144KiB/2599msec) clat (usec): min=706, max=194790, avg=93112.71, stdev=101254.58 lat (usec): min=707, max=194791, avg=93113.50, stdev=101254.50 clat percentiles (usec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 816], | 30.00th=[ 816], 40.00th=[ 881], 50.00th=[ 881], 60.00th=[179307], | 70.00th=[181404], 80.00th=[181404], 90.00th=[193987], 95.00th=[193987], | 99.00th=[193987], 99.50th=[193987], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 3968, max= 6131, per=70.43%, avg=5049.50, stdev=1529.47, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2364KiB/s (2421kB/s)(6144KiB/2599msec); 0 zone resets clat (msec): min=228, max=558, avg=336.81, stdev=126.09 lat (msec): min=228, max=558, avg=336.87, stdev=126.10 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 330], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1969, max= 4087, per=24.18%, avg=2427.20, stdev=928.56, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 lat (usec) : 750=8.33%, 1000=16.67% lat (msec) : 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.04%, sys=41.72%, ctx=648, 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=152582: Thu Sep 25 14:38:25 2025 read: IOPS=1, BW=1832KiB/s (1876kB/s)(5120KiB/2795msec) clat (usec): min=722, max=338402, avg=179595.11, stdev=127034.99 lat (usec): min=723, max=338402, avg=179595.99, stdev=127034.75 clat percentiles (usec): | 1.00th=[ 725], 5.00th=[ 725], 10.00th=[ 725], 20.00th=[ 725], | 30.00th=[116917], 40.00th=[116917], 50.00th=[221250], 60.00th=[221250], | 70.00th=[221250], 80.00th=[221250], 90.00th=[337642], 95.00th=[337642], | 99.00th=[337642], 99.50th=[337642], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 2048, max= 5953, per=55.79%, avg=4000.50, stdev=2761.25, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=2, BW=2565KiB/s (2626kB/s)(7168KiB/2795msec); 0 zone resets clat (msec): min=135, max=434, avg=270.71, stdev=117.79 lat (msec): min=135, max=434, avg=270.77, stdev=117.79 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 169], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 292], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 401], 90.00th=[ 435], 95.00th=[ 435], | 99.00th=[ 435], 99.50th=[ 435], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 1954, max= 4096, per=30.34%, avg=3046.25, stdev=1207.57, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.29, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=41.67% cpu : usr=0.00%, sys=43.81%, ctx=599, 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=7171KiB/s (7343kB/s), 717KiB/s-3170KiB/s (734kB/s-3246kB/s), io=20.0MiB (20.0MB), run=2261-2856msec WRITE: bw=9.80MiB/s (10.3MB/s), 2264KiB/s-3585KiB/s (2319kB/s-3671kB/s), io=28.0MiB (29.4MB), run=2261-2856msec 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=152588: Thu Sep 25 14:38:34 2025 read: IOPS=1, BW=4230KiB/s (4331kB/s)(12.0MiB/2905msec) clat (msec): min=217, max=1784, avg=909.57, stdev=799.58 lat (msec): min=217, max=1784, avg=909.57, stdev=799.58 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=15.63%, ctx=98, 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=152589: Thu Sep 25 14:38:34 2025 read: IOPS=0, BW=1264KiB/s (1294kB/s)(4096KiB/3241msec) clat (nsec): min=2075.2M, max=2075.2M, avg=2075160283.00, stdev= 0.00 lat (nsec): min=2075.2M, max=2075.2M, avg=2075161240.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2072], 5.00th=[ 2072], 10.00th=[ 2072], 20.00th=[ 2072], | 30.00th=[ 2072], 40.00th=[ 2072], 50.00th=[ 2072], 60.00th=[ 2072], | 70.00th=[ 2072], 80.00th=[ 2072], 90.00th=[ 2072], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] 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=2528KiB/s (2588kB/s)(8192KiB/3241msec); 0 zone resets clat (msec): min=186, max=804, avg=495.32, stdev=437.05 lat (msec): min=186, max=804, avg=495.68, stdev=436.93 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 186], 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] lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=15.40%, ctx=109, 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=152591: Thu Sep 25 14:38:34 2025 write: IOPS=0, BW=3762KiB/s (3853kB/s)(12.0MiB/3266msec); 0 zone resets clat (msec): min=193, max=2624, avg=1031.28, stdev=1380.69 lat (msec): min=194, max=2625, avg=1031.56, stdev=1380.67 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 2635], 80.00th=[ 2635], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 8192, max= 8192, per=81.65%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=17.79%, ctx=116, 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=152592: Thu Sep 25 14:38:34 2025 write: IOPS=0, BW=4014KiB/s (4111kB/s)(12.0MiB/3061msec); 0 zone resets clat (msec): min=321, max=1298, avg=962.26, stdev=555.36 lat (msec): min=321, max=1298, avg=962.55, stdev=555.36 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7846, max= 8192, per=79.93%, avg=8019.00, stdev=244.66, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=14.58%, ctx=117, 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=5055KiB/s (5177kB/s), 1264KiB/s-4230KiB/s (1294kB/s-4331kB/s), io=16.0MiB (16.8MB), run=2905-3241msec WRITE: bw=9.80MiB/s (10.3MB/s), 2528KiB/s-4014KiB/s (2588kB/s-4111kB/s), io=32.0MiB (33.6MB), run=3061-3266msec rand-rw: (groupid=0, jobs=1): err= 0: pid=152593: Thu Sep 25 14:38:34 2025 read: IOPS=1, BW=5150KiB/s (5274kB/s)(12.0MiB/2386msec) clat (msec): min=390, max=1338, avg=769.89, stdev=501.27 lat (msec): min=390, max=1338, avg=769.89, stdev=501.27 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=45.91%, ctx=2399, 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=152594: Thu Sep 25 14:38:34 2025 read: IOPS=0, BW=1841KiB/s (1885kB/s)(4096KiB/2225msec) clat (nsec): min=1083.5M, max=1083.5M, avg=1083473612.00, stdev= 0.00 lat (nsec): min=1083.5M, max=1083.5M, avg=1083474787.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1083], 5.00th=[ 1083], 10.00th=[ 1083], 20.00th=[ 1083], | 30.00th=[ 1083], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 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=3682KiB/s (3770kB/s)(8192KiB/2225msec); 0 zone resets clat (msec): min=487, max=597, avg=542.57, stdev=77.20 lat (msec): min=488, max=597, avg=542.84, stdev=77.19 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 489], 50.00th=[ 489], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 8192, max= 8192, per=76.28%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.04%, sys=29.14%, ctx=1076, 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=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=152595: Thu Sep 25 14:38:34 2025 write: IOPS=1, BW=5440KiB/s (5570kB/s)(12.0MiB/2259msec); 0 zone resets clat (msec): min=281, max=977, avg=734.38, stdev=392.61 lat (msec): min=281, max=978, avg=734.67, stdev=392.62 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 8192, max= 8192, per=76.28%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.04%, sys=15.77%, ctx=89, 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=152596: Thu Sep 25 14:38:34 2025 write: IOPS=0, BW=4028KiB/s (4124kB/s)(12.0MiB/3051msec); 0 zone resets clat (msec): min=187, max=2001, avg=995.00, stdev=923.51 lat (msec): min=187, max=2002, avg=995.34, stdev=923.52 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 2005], 80.00th=[ 2005], 90.00th=[ 2005], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.07%, sys=11.97%, ctx=84, 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=6867KiB/s (7032kB/s), 1841KiB/s-5150KiB/s (1885kB/s-5274kB/s), io=16.0MiB (16.8MB), run=2225-2386msec WRITE: bw=10.5MiB/s (10.0MB/s), 3682KiB/s-5440KiB/s (3770kB/s-5570kB/s), io=32.0MiB (33.6MB), run=2225-3051msec