== sanity test 398b: DIO and buffer IO race ============== 03:09:34 (1787123374) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.38504 s, 7.9 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=145328: Wed Aug 19 03:11:54 2026 read: IOPS=12, BW=50.4KiB/s (51.6kB/s)(5992KiB/118980msec) clat (usec): min=33, max=889045, avg=39356.83, stdev=35241.45 lat (usec): min=34, max=889046, avg=39359.07, stdev=35241.05 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 61], 10.00th=[ 1221], 20.00th=[ 18220], | 30.00th=[ 23462], 40.00th=[ 27919], 50.00th=[ 33424], 60.00th=[ 39584], | 70.00th=[ 47973], 80.00th=[ 58459], 90.00th=[ 76022], 95.00th=[ 87557], | 99.00th=[131597], 99.50th=[154141], 99.90th=[227541], 99.95th=[884999], | 99.99th=[884999] bw ( KiB/s): min= 7, max= 119, per=25.53%, avg=50.81, stdev=20.69, samples=230 iops : min= 1, max= 29, avg=12.07, stdev= 5.20, samples=230 write: IOPS=13, BW=52.9KiB/s (54.2kB/s)(6296KiB/118980msec); 0 zone resets clat (usec): min=1156, max=564251, avg=37811.93, stdev=38418.99 lat (usec): min=1156, max=564252, avg=37815.37, stdev=38419.08 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1418], 10.00th=[ 1909], 20.00th=[ 4686], | 30.00th=[ 8979], 40.00th=[ 19268], 50.00th=[ 28705], 60.00th=[ 39584], | 70.00th=[ 51119], 80.00th=[ 64226], 90.00th=[ 83362], 95.00th=[105382], | 99.00th=[168821], 99.50th=[183501], 99.90th=[263193], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 7, max= 115, per=25.32%, avg=52.91, stdev=21.72, samples=232 iops : min= 1, max= 28, avg=12.59, stdev= 5.49, samples=232 lat (usec) : 50=0.36%, 100=3.97%, 250=0.42%, 500=0.03%, 750=0.03% lat (msec) : 2=5.50%, 4=3.87%, 10=7.26%, 20=10.51%, 50=38.57% lat (msec) : 100=25.07%, 250=4.30%, 500=0.03%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=5.94%, ctx=6769, 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=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=145330: Wed Aug 19 03:11:54 2026 read: IOPS=12, BW=51.0KiB/s (52.2kB/s)(5940KiB/116460msec) clat (usec): min=34, max=290939, avg=37996.86, stdev=28946.64 lat (usec): min=34, max=290940, avg=38007.91, stdev=28954.08 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 61], 10.00th=[ 165], 20.00th=[ 18482], | 30.00th=[ 23200], 40.00th=[ 27657], 50.00th=[ 32637], 60.00th=[ 38011], | 70.00th=[ 45876], 80.00th=[ 56361], 90.00th=[ 70779], 95.00th=[ 86508], | 99.00th=[133694], 99.50th=[166724], 99.90th=[274727], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 5, max= 103, per=25.60%, avg=50.95, stdev=20.27, samples=228 iops : min= 1, max= 25, avg=12.10, stdev= 5.11, samples=228 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(6348KiB/116460msec); 0 zone resets clat (usec): min=1107, max=832385, avg=37478.33, stdev=43825.04 lat (usec): min=1109, max=832387, avg=37482.75, stdev=43823.43 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1418], 10.00th=[ 2073], 20.00th=[ 4555], | 30.00th=[ 8455], 40.00th=[ 16188], 50.00th=[ 27395], 60.00th=[ 38011], | 70.00th=[ 49021], 80.00th=[ 62653], 90.00th=[ 87557], 95.00th=[109577], | 99.00th=[160433], 99.50th=[168821], 99.90th=[566232], 99.95th=[834667], | 99.99th=[834667] bw ( KiB/s): min= 7, max= 144, per=26.01%, avg=54.35, stdev=22.47, samples=228 iops : min= 1, max= 36, avg=12.96, stdev= 5.65, samples=228 lat (usec) : 50=0.26%, 100=4.10%, 250=0.55%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.95%, 4=4.49%, 10=8.11%, 20=11.07%, 50=39.26% lat (msec) : 100=22.17%, 250=4.79%, 500=0.10%, 750=0.03%, 1000=0.03% cpu : usr=0.09%, sys=5.72%, ctx=6470, 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=145331: Wed Aug 19 03:11:54 2026 read: IOPS=12, BW=50.8KiB/s (51.0kB/s)(6028KiB/118770msec) clat (usec): min=32, max=199237, avg=36867.50, stdev=26551.10 lat (usec): min=32, max=199239, avg=36869.21, stdev=26551.43 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 60], 10.00th=[ 98], 20.00th=[ 17695], | 30.00th=[ 23200], 40.00th=[ 27657], 50.00th=[ 32637], 60.00th=[ 38011], | 70.00th=[ 44303], 80.00th=[ 53740], 90.00th=[ 70779], 95.00th=[ 86508], | 99.00th=[123208], 99.50th=[145753], 99.90th=[198181], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 7, max= 112, per=25.47%, avg=50.68, stdev=20.70, samples=232 iops : min= 1, max= 28, avg=12.04, stdev= 5.23, samples=232 write: IOPS=13, BW=52.7KiB/s (53.0kB/s)(6260KiB/118770msec); 0 zone resets clat (usec): min=1165, max=866951, avg=40076.38, stdev=47512.81 lat (usec): min=1167, max=866953, avg=40078.47, stdev=47513.09 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1401], 10.00th=[ 2114], 20.00th=[ 4817], | 30.00th=[ 9372], 40.00th=[ 19530], 50.00th=[ 29230], 60.00th=[ 39060], | 70.00th=[ 51119], 80.00th=[ 66847], 90.00th=[ 90702], 95.00th=[111674], | 99.00th=[175113], 99.50th=[202376], 99.90th=[583009], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 7, max= 127, per=24.97%, avg=52.19, stdev=19.85, samples=234 iops : min= 1, max= 31, avg=12.42, stdev= 5.01, samples=234 lat (usec) : 50=0.49%, 100=4.49%, 250=0.42%, 500=0.07% lat (msec) : 2=4.82%, 4=3.97%, 10=7.45%, 20=10.71%, 50=39.78% lat (msec) : 100=22.95%, 250=4.65%, 500=0.13%, 750=0.03%, 1000=0.03% cpu : usr=0.09%, sys=5.67%, ctx=6695, 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=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=145332: Wed Aug 19 03:11:54 2026 read: IOPS=12, BW=50.4KiB/s (51.6kB/s)(6052KiB/120103msec) clat (usec): min=35, max=346621, avg=37645.14, stdev=28256.64 lat (usec): min=35, max=346623, avg=37652.05, stdev=28257.70 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 59], 10.00th=[ 115], 20.00th=[ 17695], | 30.00th=[ 23200], 40.00th=[ 28443], 50.00th=[ 32637], 60.00th=[ 39060], | 70.00th=[ 45876], 80.00th=[ 55313], 90.00th=[ 71828], 95.00th=[ 85459], | 99.00th=[130548], 99.50th=[162530], 99.90th=[231736], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 7, max= 110, per=25.42%, avg=50.59, stdev=21.80, samples=234 iops : min= 1, max= 27, avg=12.02, stdev= 5.49, samples=234 write: IOPS=12, BW=51.9KiB/s (53.2kB/s)(6236KiB/120103msec); 0 zone resets clat (usec): min=1028, max=848055, avg=40200.61, stdev=46068.60 lat (usec): min=1029, max=848057, avg=40202.33, stdev=46068.57 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1434], 10.00th=[ 2638], 20.00th=[ 5538], | 30.00th=[ 10028], 40.00th=[ 19268], 50.00th=[ 29230], 60.00th=[ 39584], | 70.00th=[ 51643], 80.00th=[ 67634], 90.00th=[ 92799], 95.00th=[115868], | 99.00th=[164627], 99.50th=[193987], 99.90th=[526386], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 5, max= 142, per=24.85%, avg=51.94, stdev=21.22, samples=235 iops : min= 1, max= 35, avg=12.36, stdev= 5.35, samples=235 lat (usec) : 50=0.75%, 100=4.13%, 250=0.33%, 500=0.10%, 1000=0.07% lat (msec) : 2=4.07%, 4=3.68%, 10=8.01%, 20=11.23%, 50=39.62% lat (msec) : 100=22.92%, 250=4.98%, 500=0.03%, 750=0.07%, 1000=0.03% cpu : usr=0.09%, sys=5.87%, ctx=6668, majf=0, minf=18 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=200KiB/s (205kB/s), 50.4KiB/s-51.0KiB/s (51.6kB/s-52.2kB/s), io=23.4MiB (24.6MB), run=116460-120103msec WRITE: bw=209KiB/s (214kB/s), 51.9KiB/s-54.5KiB/s (53.2kB/s-55.8kB/s), io=24.6MiB (25.7MB), run=116460-120103msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145329: Wed Aug 19 03:14:02 2026 read: IOPS=6, BW=24.2KiB/s (24.8kB/s)(5992KiB/247544msec) clat (msec): min=6, max=870, avg=32.55, stdev=40.74 lat (msec): min=6, max=870, avg=32.56, stdev=40.74 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 45], 90.00th=[ 72], 95.00th=[ 91], | 99.00th=[ 171], 99.50th=[ 209], 99.90th=[ 625], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 96, per=27.96%, avg=26.84, stdev=18.06, samples=432 iops : min= 1, max= 24, avg= 6.10, stdev= 4.56, samples=432 write: IOPS=6, BW=25.4KiB/s (26.0kB/s)(6296KiB/247544msec); 0 zone resets clat (msec): min=34, max=505, avg=126.01, stdev=60.58 lat (msec): min=34, max=505, avg=126.01, stdev=60.58 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 60], 10.00th=[ 67], 20.00th=[ 79], | 30.00th=[ 89], 40.00th=[ 100], 50.00th=[ 111], 60.00th=[ 124], | 70.00th=[ 142], 80.00th=[ 165], 90.00th=[ 207], 95.00th=[ 249], | 99.00th=[ 330], 99.50th=[ 368], 99.90th=[ 439], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7, max= 55, per=24.85%, avg=25.10, stdev=11.40, samples=484 iops : min= 1, max= 13, avg= 5.65, stdev= 2.90, samples=484 lat (msec) : 10=4.04%, 20=20.57%, 50=16.67%, 100=26.27%, 250=29.82% lat (msec) : 500=2.54%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.42%, ctx=5261, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145333: Wed Aug 19 03:14:02 2026 read: IOPS=5, BW=23.9KiB/s (24.5kB/s)(5940KiB/248108msec) clat (msec): min=5, max=807, avg=32.58, stdev=40.02 lat (msec): min=5, max=807, avg=32.58, stdev=40.02 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 43], 90.00th=[ 71], 95.00th=[ 99], | 99.00th=[ 159], 99.50th=[ 178], 99.90th=[ 617], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 96, per=27.45%, avg=26.35, stdev=17.24, samples=436 iops : min= 1, max= 24, avg= 5.97, stdev= 4.35, samples=436 write: IOPS=6, BW=25.6KiB/s (26.2kB/s)(6348KiB/248108msec); 0 zone resets clat (msec): min=40, max=492, avg=125.57, stdev=59.67 lat (msec): min=40, max=492, avg=125.57, stdev=59.67 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 67], 20.00th=[ 80], | 30.00th=[ 88], 40.00th=[ 99], 50.00th=[ 110], 60.00th=[ 123], | 70.00th=[ 140], 80.00th=[ 169], 90.00th=[ 211], 95.00th=[ 247], | 99.00th=[ 313], 99.50th=[ 355], 99.90th=[ 443], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 7, max= 55, per=24.87%, avg=25.12, stdev=11.35, samples=487 iops : min= 1, max= 13, avg= 5.66, stdev= 2.88, samples=487 lat (msec) : 10=3.84%, 20=19.69%, 50=17.45%, 100=26.43%, 250=30.01% lat (msec) : 500=2.51%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.39%, ctx=5271, 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=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=145334: Wed Aug 19 03:14:02 2026 read: IOPS=6, BW=24.4KiB/s (24.0kB/s)(6028KiB/247112msec) clat (msec): min=5, max=342, avg=33.31, stdev=33.81 lat (msec): min=5, max=342, avg=33.31, stdev=33.81 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 47], 90.00th=[ 78], 95.00th=[ 105], | 99.00th=[ 163], 99.50th=[ 186], 99.90th=[ 317], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 111, per=27.24%, avg=26.15, stdev=18.35, samples=446 iops : min= 1, max= 27, avg= 5.91, stdev= 4.64, samples=446 write: IOPS=6, BW=25.3KiB/s (25.9kB/s)(6260KiB/247112msec); 0 zone resets clat (msec): min=35, max=928, avg=125.54, stdev=62.05 lat (msec): min=35, max=928, avg=125.54, stdev=62.05 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 67], 20.00th=[ 79], | 30.00th=[ 89], 40.00th=[ 100], 50.00th=[ 110], 60.00th=[ 124], | 70.00th=[ 142], 80.00th=[ 169], 90.00th=[ 207], 95.00th=[ 245], | 99.00th=[ 309], 99.50th=[ 342], 99.90th=[ 506], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7, max= 56, per=24.83%, avg=25.08, stdev=11.66, samples=482 iops : min= 1, max= 14, avg= 5.65, stdev= 2.96, samples=482 lat (msec) : 10=4.36%, 20=19.60%, 50=16.76%, 100=26.24%, 250=30.60% lat (msec) : 500=2.38%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=1.40%, ctx=5277, 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=145335: Wed Aug 19 03:14:02 2026 read: IOPS=6, BW=24.7KiB/s (25.3kB/s)(6052KiB/244990msec) clat (msec): min=5, max=397, avg=32.97, stdev=34.74 lat (msec): min=5, max=397, avg=32.97, stdev=34.74 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 46], 90.00th=[ 78], 95.00th=[ 100], | 99.00th=[ 161], 99.50th=[ 199], 99.90th=[ 368], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 102, per=28.50%, avg=27.36, stdev=17.86, samples=429 iops : min= 1, max= 25, avg= 6.22, stdev= 4.51, samples=429 write: IOPS=6, BW=25.5KiB/s (26.1kB/s)(6236KiB/244990msec); 0 zone resets clat (msec): min=37, max=903, avg=124.85, stdev=62.85 lat (msec): min=37, max=903, avg=124.85, stdev=62.85 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 79], | 30.00th=[ 88], 40.00th=[ 99], 50.00th=[ 109], 60.00th=[ 123], | 70.00th=[ 140], 80.00th=[ 167], 90.00th=[ 205], 95.00th=[ 245], | 99.00th=[ 313], 99.50th=[ 393], 99.90th=[ 506], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 63, per=24.90%, avg=25.14, stdev=11.68, samples=479 iops : min= 1, max= 15, avg= 5.66, stdev= 2.97, samples=479 lat (msec) : 10=4.92%, 20=19.17%, 50=17.42%, 100=26.46%, 250=29.59% lat (msec) : 500=2.38%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.40%, ctx=5118, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=96.8KiB/s (99.1kB/s), 23.9KiB/s-24.7KiB/s (24.5kB/s-25.3kB/s), io=23.4MiB (24.6MB), run=244990-248108msec WRITE: bw=101KiB/s (104kB/s), 25.3KiB/s-25.6KiB/s (25.9kB/s-26.2kB/s), io=24.6MiB (25.7MB), run=244990-248108msec 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=145389: Wed Aug 19 03:14:37 2026 read: IOPS=16, BW=257KiB/s (263kB/s)(5920KiB/23009msec) clat (usec): min=37, max=130060, avg=31089.82, stdev=25660.97 lat (usec): min=37, max=130061, avg=31091.35, stdev=25660.66 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 58], 10.00th=[ 64], 20.00th=[ 97], | 30.00th=[ 18482], 40.00th=[ 25035], 50.00th=[ 28967], 60.00th=[ 34341], | 70.00th=[ 41157], 80.00th=[ 49546], 90.00th=[ 66323], 95.00th=[ 79168], | 99.00th=[106431], 99.50th=[111674], 99.90th=[130548], 99.95th=[130548], | 99.99th=[130548] bw ( KiB/s): min= 126, max= 667, per=25.44%, avg=259.47, stdev=101.21, samples=45 iops : min= 7, max= 41, avg=15.42, stdev= 6.37, samples=45 write: IOPS=17, BW=277KiB/s (283kB/s)(6368KiB/23009msec); 0 zone resets clat (usec): min=1569, max=156459, avg=28633.67, stdev=28322.09 lat (usec): min=1571, max=156460, avg=28637.30, stdev=28320.89 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2073], 10.00th=[ 3064], 20.00th=[ 5800], | 30.00th=[ 8160], 40.00th=[ 11600], 50.00th=[ 17171], 60.00th=[ 26608], | 70.00th=[ 37487], 80.00th=[ 52167], 90.00th=[ 72877], 95.00th=[ 86508], | 99.00th=[115868], 99.50th=[152044], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 123, max= 446, per=25.97%, avg=278.62, stdev=84.83, samples=45 iops : min= 7, max= 27, avg=16.62, stdev= 5.32, samples=45 lat (usec) : 50=1.30%, 100=8.46%, 250=1.43%, 500=0.39%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.21%, 4=4.69%, 10=11.72%, 20=12.76%, 50=36.46% lat (msec) : 100=18.49%, 250=1.82% cpu : usr=0.10%, sys=7.92%, ctx=1485, 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=145390: Wed Aug 19 03:14:37 2026 read: IOPS=15, BW=245KiB/s (251kB/s)(5744KiB/23478msec) clat (usec): min=39, max=194602, avg=33834.25, stdev=27581.38 lat (usec): min=39, max=194602, avg=33835.77, stdev=27581.85 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 57], 10.00th=[ 62], 20.00th=[ 94], | 30.00th=[ 19530], 40.00th=[ 25297], 50.00th=[ 32375], 60.00th=[ 38536], | 70.00th=[ 44827], 80.00th=[ 53216], 90.00th=[ 64750], 95.00th=[ 76022], | 99.00th=[130548], 99.50th=[175113], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 60, max= 443, per=23.81%, avg=242.83, stdev=81.01, samples=46 iops : min= 3, max= 27, avg=14.37, stdev= 5.07, samples=46 write: IOPS=17, BW=279KiB/s (285kB/s)(6544KiB/23478msec); 0 zone resets clat (usec): min=1584, max=165900, avg=27251.40, stdev=27646.88 lat (usec): min=1587, max=165902, avg=27257.07, stdev=27644.60 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2147], 10.00th=[ 3032], 20.00th=[ 5080], | 30.00th=[ 7963], 40.00th=[ 10421], 50.00th=[ 16581], 60.00th=[ 25822], | 70.00th=[ 36439], 80.00th=[ 45876], 90.00th=[ 64226], 95.00th=[ 81265], | 99.00th=[120062], 99.50th=[135267], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 94, max= 477, per=25.69%, avg=275.67, stdev=93.84, samples=46 iops : min= 5, max= 29, avg=16.46, stdev= 5.91, samples=46 lat (usec) : 50=0.91%, 100=8.59%, 250=0.39%, 750=0.13% lat (msec) : 2=2.08%, 4=5.47%, 10=13.41%, 20=11.72%, 50=36.85% lat (msec) : 100=18.36%, 250=2.08% cpu : usr=0.09%, sys=7.71%, ctx=1542, 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=145391: Wed Aug 19 03:14:37 2026 read: IOPS=16, BW=267KiB/s (274kB/s)(6256KiB/23414msec) clat (usec): min=36, max=271002, avg=33324.97, stdev=29283.33 lat (usec): min=36, max=271004, avg=33326.14, stdev=29283.38 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 367], | 30.00th=[ 20841], 40.00th=[ 26346], 50.00th=[ 31065], 60.00th=[ 35390], | 70.00th=[ 42206], 80.00th=[ 47973], 90.00th=[ 65799], 95.00th=[ 82314], | 99.00th=[143655], 99.50th=[156238], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 95, max= 445, per=26.36%, avg=268.91, stdev=81.94, samples=46 iops : min= 5, max= 27, avg=16.02, stdev= 5.15, samples=46 write: IOPS=16, BW=258KiB/s (264kB/s)(6032KiB/23414msec); 0 zone resets clat (usec): min=1716, max=135834, avg=27087.64, stdev=26098.39 lat (usec): min=1717, max=135837, avg=27089.77, stdev=26098.32 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2376], 10.00th=[ 3359], 20.00th=[ 5735], | 30.00th=[ 7832], 40.00th=[ 11207], 50.00th=[ 16909], 60.00th=[ 25297], | 70.00th=[ 33817], 80.00th=[ 45876], 90.00th=[ 64750], 95.00th=[ 82314], | 99.00th=[107480], 99.50th=[110625], 99.90th=[135267], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 63, max= 413, per=23.77%, avg=255.09, stdev=89.79, samples=46 iops : min= 3, max= 25, avg=15.15, stdev= 5.63, samples=46 lat (usec) : 50=1.82%, 100=7.03%, 250=1.17%, 500=0.39%, 1000=0.26% lat (msec) : 2=1.82%, 4=4.17%, 10=12.76%, 20=11.07%, 50=41.41% lat (msec) : 100=15.89%, 250=2.08%, 500=0.13% cpu : usr=0.07%, sys=7.45%, ctx=1503, 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=145392: Wed Aug 19 03:14:37 2026 read: IOPS=16, BW=262KiB/s (268kB/s)(6032KiB/23050msec) clat (usec): min=33, max=153570, avg=30925.30, stdev=25901.55 lat (usec): min=33, max=153571, avg=30926.68, stdev=25901.69 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 71], | 30.00th=[ 17433], 40.00th=[ 24249], 50.00th=[ 30016], 60.00th=[ 35914], | 70.00th=[ 41681], 80.00th=[ 50594], 90.00th=[ 62129], 95.00th=[ 72877], | 99.00th=[107480], 99.50th=[152044], 99.90th=[154141], 99.95th=[154141], | 99.99th=[154141] bw ( KiB/s): min= 93, max= 415, per=25.53%, avg=260.36, stdev=87.78, samples=45 iops : min= 5, max= 25, avg=15.47, stdev= 5.57, samples=45 write: IOPS=16, BW=271KiB/s (278kB/s)(6256KiB/23050msec); 0 zone resets clat (usec): min=1612, max=161961, avg=28646.20, stdev=29004.24 lat (usec): min=1615, max=161962, avg=28653.10, stdev=29001.17 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2147], 10.00th=[ 3195], 20.00th=[ 5735], | 30.00th=[ 8356], 40.00th=[ 11207], 50.00th=[ 16450], 60.00th=[ 27395], | 70.00th=[ 34341], 80.00th=[ 48497], 90.00th=[ 71828], 95.00th=[ 89654], | 99.00th=[124257], 99.50th=[131597], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 124, max= 478, per=25.16%, avg=269.98, stdev=81.85, samples=45 iops : min= 7, max= 29, avg=16.09, stdev= 5.11, samples=45 lat (usec) : 50=1.43%, 100=10.55%, 250=0.26%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.21%, 4=4.95%, 10=11.33%, 20=11.33%, 50=37.37% lat (msec) : 100=17.45%, 250=2.60% cpu : usr=0.07%, sys=7.53%, ctx=1462, 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=1020KiB/s (1045kB/s), 245KiB/s-267KiB/s (251kB/s-274kB/s), io=23.4MiB (24.5MB), run=23009-23478msec WRITE: bw=1073KiB/s (1099kB/s), 258KiB/s-279KiB/s (264kB/s-285kB/s), io=24.6MiB (25.8MB), run=23009-23478msec fio: pid=145394, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=145394: Wed Aug 19 03:15:12 2026 read: IOPS=5, BW=89.6KiB/s (91.8kB/s)(3888KiB/43370msec) clat (msec): min=6, max=195, avg=39.65, stdev=32.80 lat (msec): min=6, max=195, avg=39.65, stdev=32.80 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 58], 90.00th=[ 78], 95.00th=[ 116], | 99.00th=[ 176], 99.50th=[ 180], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 31, max= 384, per=26.31%, avg=98.91, stdev=61.81, samples=77 iops : min= 1, max= 24, avg= 5.40, stdev= 3.99, samples=77 write: IOPS=6, BW=101KiB/s (103kB/s)(4368KiB/43370msec); 0 zone resets clat (msec): min=34, max=346, avg=123.31, stdev=51.70 lat (msec): min=34, max=346, avg=123.31, stdev=51.70 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 61], 10.00th=[ 70], 20.00th=[ 83], | 30.00th=[ 92], 40.00th=[ 102], 50.00th=[ 113], 60.00th=[ 126], | 70.00th=[ 140], 80.00th=[ 161], 90.00th=[ 188], 95.00th=[ 239], | 99.00th=[ 292], 99.50th=[ 309], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 24, max= 192, per=25.32%, avg=100.78, stdev=42.55, samples=85 iops : min= 1, max= 12, avg= 5.51, stdev= 2.76, samples=85 lat (msec) : 10=0.58%, 20=13.54%, 50=21.86%, 100=28.05%, 250=34.04% lat (msec) : 500=1.74% cpu : usr=0.04%, sys=1.75%, ctx=914, majf=0, minf=18 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=244,273,0,0 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=145395: Wed Aug 19 03:15:12 2026 read: IOPS=6, BW=98.8KiB/s (101kB/s)(5744KiB/58156msec) clat (msec): min=7, max=198, avg=33.66, stdev=28.39 lat (msec): min=7, max=198, avg=33.66, stdev=28.39 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 72], 95.00th=[ 96], | 99.00th=[ 146], 99.50th=[ 163], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 24, max= 349, per=28.77%, avg=108.16, stdev=70.42, samples=105 iops : min= 1, max= 21, avg= 6.04, stdev= 4.43, samples=105 write: IOPS=7, BW=113KiB/s (115kB/s)(6544KiB/58156msec); 0 zone resets clat (msec): min=45, max=340, avg=112.57, stdev=47.84 lat (msec): min=45, max=340, avg=112.58, stdev=47.84 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 79], | 30.00th=[ 86], 40.00th=[ 94], 50.00th=[ 101], 60.00th=[ 111], | 70.00th=[ 123], 80.00th=[ 144], 90.00th=[ 176], 95.00th=[ 207], | 99.00th=[ 305], 99.50th=[ 326], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 30, max= 223, per=28.43%, avg=113.16, stdev=43.47, samples=114 iops : min= 1, max= 13, avg= 6.32, stdev= 2.84, samples=114 lat (msec) : 10=1.95%, 20=15.89%, 50=21.88%, 100=31.38%, 250=27.73% lat (msec) : 500=1.17% cpu : usr=0.06%, sys=1.71%, ctx=1426, 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=145396: Wed Aug 19 03:15:12 2026 read: IOPS=6, BW=112KiB/s (114kB/s)(6256KiB/56099msec) clat (msec): min=7, max=202, avg=31.83, stdev=27.13 lat (msec): min=7, max=202, avg=31.84, stdev=27.13 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 44], 90.00th=[ 62], 95.00th=[ 89], | 99.00th=[ 148], 99.50th=[ 184], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 31, max= 316, per=30.45%, avg=114.48, stdev=80.28, samples=108 iops : min= 1, max= 19, avg= 6.43, stdev= 5.08, samples=108 write: IOPS=6, BW=108KiB/s (110kB/s)(6032KiB/56099msec); 0 zone resets clat (msec): min=44, max=392, avg=115.67, stdev=50.19 lat (msec): min=44, max=392, avg=115.67, stdev=50.19 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 62], 10.00th=[ 69], 20.00th=[ 78], | 30.00th=[ 87], 40.00th=[ 96], 50.00th=[ 105], 60.00th=[ 113], | 70.00th=[ 127], 80.00th=[ 144], 90.00th=[ 182], 95.00th=[ 226], | 99.00th=[ 271], 99.50th=[ 376], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 31, max= 160, per=26.90%, avg=107.05, stdev=38.93, samples=111 iops : min= 1, max= 10, avg= 5.95, stdev= 2.55, samples=111 lat (msec) : 10=1.82%, 20=19.01%, 50=23.31%, 100=27.73%, 250=27.21% lat (msec) : 500=0.91% cpu : usr=0.04%, sys=1.77%, ctx=1487, 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=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=145397: Wed Aug 19 03:15:12 2026 read: IOPS=6, BW=106KiB/s (108kB/s)(6032KiB/56929msec) clat (msec): min=7, max=210, avg=32.71, stdev=27.70 lat (msec): min=7, max=210, avg=32.72, stdev=27.70 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 45], 90.00th=[ 68], 95.00th=[ 89], | 99.00th=[ 144], 99.50th=[ 174], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 30, max= 378, per=30.94%, avg=116.32, stdev=69.22, samples=101 iops : min= 1, max= 23, avg= 6.52, stdev= 4.38, samples=101 write: IOPS=6, BW=110KiB/s (113kB/s)(6256KiB/56929msec); 0 zone resets clat (msec): min=45, max=283, avg=113.98, stdev=46.23 lat (msec): min=45, max=283, avg=113.98, stdev=46.23 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 66], 20.00th=[ 78], | 30.00th=[ 87], 40.00th=[ 96], 50.00th=[ 105], 60.00th=[ 113], | 70.00th=[ 125], 80.00th=[ 146], 90.00th=[ 174], 95.00th=[ 213], | 99.00th=[ 268], 99.50th=[ 275], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 224, per=27.45%, avg=109.23, stdev=42.49, samples=112 iops : min= 1, max= 14, avg= 6.09, stdev= 2.79, samples=112 lat (msec) : 10=2.73%, 20=16.15%, 50=23.05%, 100=29.43%, 250=27.47% lat (msec) : 500=1.17% cpu : usr=0.06%, sys=1.80%, ctx=1462, 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=377KiB/s (386kB/s), 89.6KiB/s-112KiB/s (91.8kB/s-114kB/s), io=21.4MiB (22.4MB), run=43370-58156msec WRITE: bw=399KiB/s (409kB/s), 101KiB/s-113KiB/s (103kB/s-115kB/s), io=22.7MiB (23.8MB), run=43370-58156msec 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=145413: Wed Aug 19 03:15:29 2026 read: IOPS=1, BW=1534KiB/s (1570kB/s)(7168KiB/4674msec) clat (msec): min=38, max=576, avg=246.11, stdev=168.09 lat (msec): min=38, max=576, avg=246.11, stdev=168.09 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 39], 10.00th=[ 39], 20.00th=[ 157], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 203], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 300], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1565, max= 4096, per=79.69%, avg=2926.25, stdev=1346.66, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 write: IOPS=1, BW=1095KiB/s (1122kB/s)(5120KiB/4674msec); 0 zone resets clat (msec): min=258, max=825, avg=532.43, stdev=230.01 lat (msec): min=259, max=827, avg=533.08, stdev=230.75 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 1906, max= 2048, per=38.50%, avg=1979.40, stdev=61.64, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 50=8.33%, 250=25.00%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=11.66%, ctx=252, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145414: Wed Aug 19 03:15:29 2026 read: IOPS=0, BW=367KiB/s (376kB/s)(2048KiB/5577msec) clat (usec): min=273948, max=275148, avg=274548.56, stdev=848.29 lat (usec): min=273950, max=275150, avg=274550.47, stdev=848.90 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 275], 95.00th=[ 275], | 99.00th=[ 275], 99.50th=[ 275], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 1539, max= 1973, per=47.82%, avg=1756.00, stdev=306.88, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1836KiB/s (1880kB/s)(10.0MiB/5577msec); 0 zone resets clat (msec): min=267, max=847, avg=484.55, stdev=192.20 lat (msec): min=267, max=847, avg=484.67, stdev=192.20 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 334], | 30.00th=[ 368], 40.00th=[ 388], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 472], 80.00th=[ 592], 90.00th=[ 776], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 1906, max= 4096, per=50.06%, avg=2573.71, stdev=1037.65, samples=7 iops : min= 1, max= 4, avg= 1.71, stdev= 1.25, samples=7 lat (msec) : 500=75.00%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=12.00%, ctx=177, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145415: Wed Aug 19 03:15:29 2026 read: IOPS=1, BW=1449KiB/s (1484kB/s)(6144KiB/4239msec) clat (usec): min=509, max=465999, avg=156762.48, stdev=205790.16 lat (usec): min=511, max=466001, avg=156763.78, stdev=205790.25 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 42730], 50.00th=[ 42730], 60.00th=[ 61604], | 70.00th=[371196], 80.00th=[371196], 90.00th=[467665], 95.00th=[467665], | 99.00th=[467665], 99.50th=[467665], 99.90th=[467665], 99.95th=[467665], | 99.99th=[467665] bw ( KiB/s): min= 1973, max= 4071, per=91.03%, avg=3342.67, stdev=1186.96, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1449KiB/s (1484kB/s)(6144KiB/4239msec); 0 zone resets clat (msec): min=194, max=1141, avg=540.51, stdev=323.12 lat (msec): min=194, max=1141, avg=540.63, stdev=323.10 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 518], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 1499, max= 2035, per=36.83%, avg=1893.40, stdev=226.68, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=16.67% lat (msec) : 50=8.33%, 100=8.33%, 250=8.33%, 500=25.00%, 750=25.00% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=12.15%, ctx=173, 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=145417: Wed Aug 19 03:15:29 2026 read: IOPS=1, BW=1147KiB/s (1175kB/s)(5120KiB/4462msec) clat (usec): min=631, max=405622, avg=239136.36, stdev=147427.79 lat (usec): min=632, max=405624, avg=239137.86, stdev=147428.08 clat percentiles (usec): | 1.00th=[ 635], 5.00th=[ 635], 10.00th=[ 635], 20.00th=[ 635], | 30.00th=[246416], 40.00th=[246416], 50.00th=[263193], 60.00th=[263193], | 70.00th=[278922], 80.00th=[278922], 90.00th=[404751], 95.00th=[404751], | 99.00th=[404751], 99.50th=[404751], 99.90th=[404751], 99.95th=[404751], | 99.99th=[404751] bw ( KiB/s): min= 1906, max= 6107, per=100.00%, avg=4006.50, stdev=2970.56, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1606KiB/s (1645kB/s)(7168KiB/4462msec); 0 zone resets clat (msec): min=279, max=721, avg=442.67, stdev=159.77 lat (msec): min=279, max=721, avg=443.07, stdev=159.54 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 305], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 409], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 575], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1684, max= 4096, per=52.97%, avg=2723.20, stdev=1159.68, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=8.33%, 500=66.67%, 750=16.67% cpu : usr=0.00%, sys=12.78%, ctx=190, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3672KiB/s (3760kB/s), 367KiB/s-1534KiB/s (376kB/s-1570kB/s), io=20.0MiB (20.0MB), run=4239-5577msec WRITE: bw=5141KiB/s (5265kB/s), 1095KiB/s-1836KiB/s (1122kB/s-1880kB/s), io=28.0MiB (29.4MB), run=4239-5577msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145418: Wed Aug 19 03:15:30 2026 read: IOPS=1, BW=1413KiB/s (1447kB/s)(7168KiB/5073msec) clat (msec): min=108, max=833, avg=436.75, stdev=295.37 lat (msec): min=108, max=833, avg=436.75, stdev=295.37 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 136], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 401], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 827], 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= 1497, max= 4087, per=68.17%, avg=2323.80, stdev=1010.83, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=1009KiB/s (1033kB/s)(5120KiB/5073msec); 0 zone resets clat (msec): min=193, max=858, avg=378.61, stdev=274.92 lat (msec): min=193, max=858, avg=378.75, stdev=275.00 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 296], 60.00th=[ 296], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1965, max= 3930, per=55.41%, avg=2644.67, stdev=1113.75, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=33.33%, 500=41.67%, 1000=25.00% cpu : usr=0.00%, sys=3.57%, ctx=96, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145419: Wed Aug 19 03:15:30 2026 read: IOPS=0, BW=358KiB/s (366kB/s)(2048KiB/5726msec) clat (msec): min=393, max=452, avg=422.82, stdev=41.29 lat (msec): min=393, max=452, avg=422.83, stdev=41.29 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 451], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 1946, max= 2027, per=58.27%, avg=1986.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1788KiB/s (1831kB/s)(10.0MiB/5726msec); 0 zone resets clat (msec): min=178, max=849, avg=454.52, stdev=224.99 lat (msec): min=178, max=850, avg=454.65, stdev=224.98 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 215], | 30.00th=[ 309], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 435], | 70.00th=[ 477], 80.00th=[ 542], 90.00th=[ 802], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 1946, max= 4079, per=48.04%, avg=2293.14, stdev=788.30, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 250=16.67%, 500=58.33%, 750=8.33%, 1000=16.67% cpu : usr=0.03%, sys=4.26%, ctx=126, 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=145420: Wed Aug 19 03:15:30 2026 read: IOPS=1, BW=1106KiB/s (1133kB/s)(6144KiB/5553msec) clat (msec): min=117, max=464, avg=271.98, stdev=126.87 lat (msec): min=117, max=464, avg=271.98, stdev=126.87 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 199], 50.00th=[ 199], 60.00th=[ 330], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 2023, max= 4079, per=98.25%, avg=3349.33, stdev=1150.56, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1106KiB/s (1133kB/s)(6144KiB/5553msec); 0 zone resets clat (msec): min=135, max=1333, avg=575.16, stdev=481.65 lat (msec): min=135, max=1333, avg=575.27, stdev=481.66 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 464], | 70.00th=[ 986], 80.00th=[ 986], 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= 1946, max= 4055, per=52.62%, avg=2511.75, stdev=1029.47, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=41.67%, 500=41.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=3.60%, ctx=97, 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=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=145421: Wed Aug 19 03:15:30 2026 read: IOPS=0, BW=852KiB/s (873kB/s)(5120KiB/6006msec) clat (msec): min=71, max=879, avg=333.57, stdev=330.64 lat (msec): min=71, max=879, avg=333.57, stdev=330.64 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 91], 40.00th=[ 91], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1965, max= 6119, per=100.00%, avg=4042.00, stdev=2937.32, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1193KiB/s (1222kB/s)(7168KiB/6006msec); 0 zone resets clat (msec): min=128, max=1240, avg=553.37, stdev=376.97 lat (msec): min=128, max=1240, avg=553.49, stdev=376.99 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 305], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 510], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 835], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 1973, max= 4047, per=52.77%, avg=2518.50, stdev=1019.32, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=16.67%, 500=25.00%, 750=16.67%, 1000=16.67% lat (msec) : 2000=8.33% cpu : usr=0.08%, sys=3.80%, ctx=97, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3410KiB/s (3492kB/s), 358KiB/s-1413KiB/s (366kB/s-1447kB/s), io=20.0MiB (20.0MB), run=5073-6006msec WRITE: bw=4774KiB/s (4888kB/s), 1009KiB/s-1788KiB/s (1033kB/s-1831kB/s), io=28.0MiB (29.4MB), run=5073-6006msec 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=145430: Wed Aug 19 03:15:46 2026 read: IOPS=1, BW=4724KiB/s (4838kB/s)(12.0MiB/2601msec) clat (msec): min=733, max=949, avg=849.43, stdev=109.04 lat (msec): min=733, max=949, avg=849.43, stdev=109.04 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 8047, max= 8175, per=100.00%, avg=8111.00, stdev=90.51, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=13.23%, ctx=320, 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=145431: Wed Aug 19 03:15:46 2026 read: IOPS=0, BW=1404KiB/s (1437kB/s)(4096KiB/2918msec) clat (nsec): min=747613k, max=747613k, avg=747613008.00, stdev= 0.00 lat (nsec): min=747616k, max=747616k, avg=747615783.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 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=2807KiB/s (2875kB/s)(8192KiB/2918msec); 0 zone resets clat (msec): min=631, max=1447, avg=1039.56, stdev=577.55 lat (msec): min=631, max=1448, avg=1039.91, stdev=577.36 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 1452], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 8175, max= 8175, per=94.94%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.03%, sys=5.38%, ctx=123, 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=145433: Wed Aug 19 03:15:46 2026 write: IOPS=0, BW=3229KiB/s (3307kB/s)(12.0MiB/3805msec); 0 zone resets clat (msec): min=544, max=1761, avg=1249.19, stdev=630.60 lat (msec): min=545, max=1761, avg=1250.37, stdev=630.76 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 1435], 50.00th=[ 1435], 60.00th=[ 1435], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7742, max= 8175, per=92.42%, avg=7958.50, stdev=306.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.81%, ctx=40, 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=145435: Wed Aug 19 03:15:46 2026 write: IOPS=1, BW=4292KiB/s (4395kB/s)(12.0MiB/2863msec); 0 zone resets clat (msec): min=797, max=986, avg=890.31, stdev=94.24 lat (msec): min=800, max=986, avg=891.41, stdev=93.12 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 8047, max= 8175, per=94.19%, avg=8111.00, stdev=90.51, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.03%, sys=6.15%, ctx=68, 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=5615KiB/s (5750kB/s), 1404KiB/s-4724KiB/s (1437kB/s-4838kB/s), io=16.0MiB (16.8MB), run=2601-2918msec WRITE: bw=8612KiB/s (8819kB/s), 2807KiB/s-4292KiB/s (2875kB/s-4395kB/s), io=32.0MiB (33.6MB), run=2863-3805msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145432: Wed Aug 19 03:15:46 2026 read: IOPS=0, BW=3107KiB/s (3182kB/s)(12.0MiB/3955msec) clat (msec): min=417, max=1859, avg=1294.13, stdev=770.11 lat (msec): min=417, max=1859, avg=1294.13, stdev=770.11 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 1603], 50.00th=[ 1603], 60.00th=[ 1603], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8126, max= 8175, per=100.00%, avg=8150.50, stdev=34.65, 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=2.30%, ctx=49, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145434: Wed Aug 19 03:15:46 2026 read: IOPS=0, BW=1086KiB/s (1112kB/s)(4096KiB/3772msec) clat (nsec): min=1806.8M, max=1806.8M, avg=1806813435.00, stdev= 0.00 lat (nsec): min=1806.8M, max=1806.8M, avg=1806816047.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1804], 5.00th=[ 1804], 10.00th=[ 1804], 20.00th=[ 1804], | 30.00th=[ 1804], 40.00th=[ 1804], 50.00th=[ 1804], 60.00th=[ 1804], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2172KiB/s (2224kB/s)(8192KiB/3772msec); 0 zone resets clat (msec): min=759, max=1080, avg=919.66, stdev=226.92 lat (msec): min=759, max=1080, avg=920.10, stdev=226.97 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 760], 50.00th=[ 760], 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= 8062, max= 8062, per=92.81%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.53%, ctx=81, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145436: Wed Aug 19 03:15:46 2026 write: IOPS=0, BW=3511KiB/s (3595kB/s)(12.0MiB/3500msec); 0 zone resets clat (msec): min=916, max=1413, avg=1146.48, stdev=250.42 lat (msec): min=916, max=1413, avg=1147.40, stdev=250.36 clat percentiles (msec): | 1.00th=[ 919], 5.00th=[ 919], 10.00th=[ 919], 20.00th=[ 919], | 30.00th=[ 919], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8159, max= 8175, per=94.01%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.46%, ctx=49, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145437: Wed Aug 19 03:15:46 2026 write: IOPS=1, BW=4824KiB/s (4940kB/s)(12.0MiB/2547msec); 0 zone resets clat (msec): min=337, max=1520, avg=773.45, stdev=650.21 lat (msec): min=338, max=1521, avg=774.19, stdev=649.98 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 1519], 80.00th=[ 1519], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min=16318, max=16318, per=100.00%, avg=16318.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.26%, ctx=54, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4143KiB/s (4242kB/s), 1086KiB/s-3107KiB/s (1112kB/s-3182kB/s), io=16.0MiB (16.8MB), run=3772-3955msec WRITE: bw=8687KiB/s (8896kB/s), 2172KiB/s-4824KiB/s (2224kB/s-4940kB/s), io=32.0MiB (33.6MB), run=2547-3772msec