== sanity test 398b: DIO and buffer IO race ============== 10:15:16 (1787062516) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.80672 s, 17.9 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=160612: Tue Aug 18 10:16:30 2026 read: IOPS=23, BW=93.8KiB/s (96.0kB/s)(5992KiB/63903msec) clat (usec): min=28, max=701340, avg=22842.32, stdev=21662.34 lat (usec): min=28, max=701340, avg=22842.92, stdev=21662.34 clat percentiles (usec): | 1.00th=[ 104], 5.00th=[ 6325], 10.00th=[ 9372], 20.00th=[ 12780], | 30.00th=[ 15270], 40.00th=[ 17695], 50.00th=[ 20317], 60.00th=[ 23725], | 70.00th=[ 27132], 80.00th=[ 31065], 90.00th=[ 37487], 95.00th=[ 43779], | 99.00th=[ 62653], 99.50th=[ 74974], 99.90th=[122160], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 31, max= 183, per=25.58%, avg=93.64, stdev=29.78, samples=127 iops : min= 7, max= 45, avg=22.94, stdev= 7.43, samples=127 write: IOPS=24, BW=98.5KiB/s (101kB/s)(6296KiB/63903msec); 0 zone resets clat (usec): min=798, max=114529, avg=18734.35, stdev=14317.53 lat (usec): min=798, max=114530, avg=18735.09, stdev=14317.52 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 3359], 10.00th=[ 4555], 20.00th=[ 6259], | 30.00th=[ 8848], 40.00th=[ 12518], 50.00th=[ 15664], 60.00th=[ 19268], | 70.00th=[ 22938], 80.00th=[ 28443], 90.00th=[ 36963], 95.00th=[ 46924], | 99.00th=[ 62653], 99.50th=[ 79168], 99.90th=[106431], 99.95th=[114820], | 99.99th=[114820] bw ( KiB/s): min= 33, max= 224, per=25.65%, avg=98.24, stdev=33.34, samples=127 iops : min= 8, max= 56, avg=24.09, stdev= 8.36, samples=127 lat (usec) : 50=0.13%, 100=0.33%, 250=1.50%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.46% lat (msec) : 2=0.59%, 4=2.83%, 10=16.89%, 20=32.49%, 50=41.63% lat (msec) : 100=2.77%, 250=0.26%, 750=0.03% cpu : usr=0.06%, sys=29.39%, ctx=9998, 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=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=160613: Tue Aug 18 10:16:30 2026 read: IOPS=23, BW=92.5KiB/s (94.7kB/s)(5940KiB/64221msec) clat (usec): min=23, max=688215, avg=23215.85, stdev=21451.50 lat (usec): min=23, max=688215, avg=23216.43, stdev=21451.51 clat percentiles (usec): | 1.00th=[ 124], 5.00th=[ 8160], 10.00th=[ 10552], 20.00th=[ 13042], | 30.00th=[ 15926], 40.00th=[ 18220], 50.00th=[ 20317], 60.00th=[ 23462], | 70.00th=[ 26870], 80.00th=[ 31065], 90.00th=[ 37487], 95.00th=[ 44303], | 99.00th=[ 66323], 99.50th=[ 83362], 99.90th=[131597], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 20, max= 182, per=25.20%, avg=92.22, stdev=27.03, samples=127 iops : min= 5, max= 45, avg=22.59, stdev= 6.75, samples=127 write: IOPS=24, BW=98.8KiB/s (101kB/s)(6348KiB/64221msec); 0 zone resets clat (usec): min=781, max=116234, avg=18604.40, stdev=13925.30 lat (usec): min=782, max=116235, avg=18605.14, stdev=13925.34 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 3228], 10.00th=[ 4490], 20.00th=[ 6194], | 30.00th=[ 8586], 40.00th=[ 11994], 50.00th=[ 15795], 60.00th=[ 19530], | 70.00th=[ 23725], 80.00th=[ 28967], 90.00th=[ 37487], 95.00th=[ 45351], | 99.00th=[ 62129], 99.50th=[ 68682], 99.90th=[103285], 99.95th=[115868], | 99.99th=[115868] bw ( KiB/s): min= 24, max= 199, per=25.66%, avg=98.29, stdev=34.19, samples=127 iops : min= 6, max= 49, avg=24.11, stdev= 8.52, samples=127 lat (usec) : 50=0.13%, 100=0.10%, 250=1.11%, 500=0.07%, 1000=0.42% lat (msec) : 2=0.65%, 4=3.32%, 10=16.34%, 20=33.20%, 50=41.73% lat (msec) : 100=2.67%, 250=0.23%, 750=0.03% cpu : usr=0.09%, sys=29.57%, ctx=10059, 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=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=160614: Tue Aug 18 10:16:30 2026 read: IOPS=23, BW=92.8KiB/s (94.0kB/s)(6028KiB/64983msec) clat (usec): min=31, max=108385, avg=22574.13, stdev=12341.07 lat (usec): min=32, max=108386, avg=22575.25, stdev=12340.77 clat percentiles (usec): | 1.00th=[ 123], 5.00th=[ 6259], 10.00th=[ 9765], 20.00th=[ 13042], | 30.00th=[ 15795], 40.00th=[ 17957], 50.00th=[ 20841], 60.00th=[ 23987], | 70.00th=[ 27395], 80.00th=[ 31327], 90.00th=[ 38536], 95.00th=[ 43779], | 99.00th=[ 60031], 99.50th=[ 68682], 99.90th=[ 91751], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 24, max= 200, per=25.24%, avg=92.37, stdev=28.54, samples=129 iops : min= 6, max= 50, avg=22.63, stdev= 7.13, samples=129 write: IOPS=24, BW=96.3KiB/s (98.6kB/s)(6260KiB/64983msec); 0 zone resets clat (usec): min=658, max=664950, avg=19653.46, stdev=21880.95 lat (usec): min=658, max=664951, avg=19654.56, stdev=21880.75 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 3490], 10.00th=[ 4424], 20.00th=[ 6128], | 30.00th=[ 8717], 40.00th=[ 12911], 50.00th=[ 16319], 60.00th=[ 20055], | 70.00th=[ 24249], 80.00th=[ 30278], 90.00th=[ 38011], 95.00th=[ 44827], | 99.00th=[ 71828], 99.50th=[ 86508], 99.90th=[112722], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 31, max= 215, per=25.03%, avg=95.88, stdev=33.44, samples=129 iops : min= 7, max= 53, avg=23.50, stdev= 8.42, samples=129 lat (usec) : 50=0.03%, 100=0.26%, 250=1.69%, 500=0.20%, 750=0.03% lat (usec) : 1000=0.33% lat (msec) : 2=0.49%, 4=3.39%, 10=15.63%, 20=31.80%, 50=43.46% lat (msec) : 100=2.54%, 250=0.13%, 750=0.03% cpu : usr=0.07%, sys=29.13%, ctx=9900, 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=160615: Tue Aug 18 10:16:30 2026 read: IOPS=23, BW=92.3KiB/s (94.5kB/s)(6052KiB/65595msec) clat (usec): min=34, max=696382, avg=22960.09, stdev=21261.43 lat (usec): min=34, max=696382, avg=22960.70, stdev=21261.43 clat percentiles (usec): | 1.00th=[ 126], 5.00th=[ 6718], 10.00th=[ 9503], 20.00th=[ 13042], | 30.00th=[ 15533], 40.00th=[ 18482], 50.00th=[ 21103], 60.00th=[ 23987], | 70.00th=[ 27395], 80.00th=[ 31065], 90.00th=[ 36963], 95.00th=[ 42730], | 99.00th=[ 60556], 99.50th=[ 70779], 99.90th=[154141], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 31, max= 224, per=24.96%, avg=91.35, stdev=31.03, samples=130 iops : min= 7, max= 56, avg=22.38, stdev= 7.80, samples=130 write: IOPS=23, BW=95.1KiB/s (97.3kB/s)(6236KiB/65595msec); 0 zone resets clat (usec): min=784, max=133721, avg=19662.27, stdev=15394.60 lat (usec): min=784, max=133722, avg=19663.60, stdev=15394.70 clat percentiles (usec): | 1.00th=[ 955], 5.00th=[ 3228], 10.00th=[ 4228], 20.00th=[ 5997], | 30.00th=[ 8848], 40.00th=[ 12780], 50.00th=[ 16450], 60.00th=[ 20317], | 70.00th=[ 25035], 80.00th=[ 31065], 90.00th=[ 40633], 95.00th=[ 47973], | 99.00th=[ 67634], 99.50th=[ 81265], 99.90th=[128451], 99.95th=[133694], | 99.99th=[133694] bw ( KiB/s): min= 39, max= 232, per=24.64%, avg=94.35, stdev=35.44, samples=130 iops : min= 9, max= 58, avg=23.12, stdev= 8.89, samples=130 lat (usec) : 50=0.07%, 100=0.07%, 250=1.30%, 500=0.26%, 1000=0.55% lat (msec) : 2=0.81%, 4=3.35%, 10=15.63%, 20=30.92%, 50=43.88% lat (msec) : 100=2.93%, 250=0.20%, 750=0.03% cpu : usr=0.07%, sys=29.10%, ctx=10254, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=366KiB/s (375kB/s), 92.3KiB/s-93.8KiB/s (94.5kB/s-96.0kB/s), io=23.4MiB (24.6MB), run=63903-65595msec WRITE: bw=383KiB/s (392kB/s), 95.1KiB/s-98.8KiB/s (97.3kB/s-101kB/s), io=24.6MiB (25.7MB), run=63903-65595msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160617: Tue Aug 18 10:16:51 2026 read: IOPS=17, BW=69.7KiB/s (71.4kB/s)(5992KiB/85917msec) clat (msec): min=2, max=695, avg=19.29, stdev=24.00 lat (msec): min=2, max=695, avg=19.29, stdev=24.00 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 43], 95.00th=[ 54], | 99.00th=[ 78], 99.50th=[ 84], 99.90th=[ 138], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 216, per=25.12%, avg=69.84, stdev=41.86, samples=170 iops : min= 1, max= 54, avg=17.15, stdev=10.58, samples=170 write: IOPS=18, BW=73.3KiB/s (75.0kB/s)(6296KiB/85917msec); 0 zone resets clat (msec): min=11, max=139, avg=36.20, stdev=18.78 lat (msec): min=11, max=139, avg=36.20, stdev=18.78 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 50], 90.00th=[ 61], 95.00th=[ 72], | 99.00th=[ 105], 99.50th=[ 122], 99.90th=[ 134], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 15, max= 176, per=25.18%, avg=73.28, stdev=37.99, samples=170 iops : min= 3, max= 44, avg=18.01, stdev= 9.65, samples=170 lat (msec) : 4=2.86%, 10=15.76%, 20=20.77%, 50=47.56%, 100=12.24% lat (msec) : 250=0.78%, 750=0.03% cpu : usr=0.07%, sys=12.17%, ctx=6906, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160618: Tue Aug 18 10:16:51 2026 read: IOPS=17, BW=68.0KiB/s (70.6kB/s)(5940KiB/86136msec) clat (msec): min=2, max=717, avg=19.79, stdev=25.10 lat (msec): min=2, max=717, avg=19.79, stdev=25.10 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 31], 90.00th=[ 43], 95.00th=[ 55], | 99.00th=[ 82], 99.50th=[ 99], 99.90th=[ 165], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 216, per=24.75%, avg=68.81, stdev=42.77, samples=170 iops : min= 1, max= 54, avg=16.89, stdev=10.80, samples=170 write: IOPS=18, BW=73.7KiB/s (75.5kB/s)(6348KiB/86136msec); 0 zone resets clat (msec): min=11, max=185, avg=35.73, stdev=19.34 lat (msec): min=11, max=185, avg=35.73, stdev=19.34 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 41], 80.00th=[ 49], 90.00th=[ 60], 95.00th=[ 73], | 99.00th=[ 106], 99.50th=[ 124], 99.90th=[ 153], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 15, max= 176, per=25.18%, avg=73.28, stdev=37.75, samples=170 iops : min= 3, max= 44, avg=18.01, stdev= 9.58, samples=170 lat (msec) : 4=2.90%, 10=15.36%, 20=21.88%, 50=46.68%, 100=12.30% lat (msec) : 250=0.85%, 750=0.03% cpu : usr=0.07%, sys=12.12%, ctx=6916, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160619: Tue Aug 18 10:16:51 2026 read: IOPS=17, BW=70.3KiB/s (72.0kB/s)(6028KiB/85690msec) clat (msec): min=2, max=165, avg=19.61, stdev=17.48 lat (msec): min=2, max=165, avg=19.61, stdev=17.48 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 29], 90.00th=[ 43], 95.00th=[ 55], | 99.00th=[ 81], 99.50th=[ 97], 99.90th=[ 138], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 15, max= 224, per=25.31%, avg=70.35, stdev=39.67, samples=169 iops : min= 3, max= 56, avg=17.27, stdev=10.04, samples=169 write: IOPS=18, BW=73.1KiB/s (74.8kB/s)(6260KiB/85690msec); 0 zone resets clat (msec): min=13, max=738, avg=35.84, stdev=26.27 lat (msec): min=13, max=738, avg=35.85, stdev=26.27 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 30], 60.00th=[ 34], | 70.00th=[ 40], 80.00th=[ 47], 90.00th=[ 61], 95.00th=[ 71], | 99.00th=[ 109], 99.50th=[ 134], 99.90th=[ 188], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 8, max= 176, per=25.07%, avg=72.95, stdev=38.57, samples=169 iops : min= 2, max= 44, avg=17.92, stdev= 9.78, samples=169 lat (msec) : 4=2.77%, 10=14.97%, 20=22.23%, 50=48.05%, 100=11.00% lat (msec) : 250=0.94%, 750=0.03% cpu : usr=0.07%, sys=12.34%, ctx=6887, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160620: Tue Aug 18 10:16:51 2026 read: IOPS=17, BW=70.6KiB/s (72.3kB/s)(6052KiB/85680msec) clat (msec): min=2, max=131, avg=19.23, stdev=17.06 lat (msec): min=2, max=131, avg=19.23, stdev=17.06 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 41], 95.00th=[ 55], | 99.00th=[ 85], 99.50th=[ 97], 99.90th=[ 120], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 7, max= 208, per=25.50%, avg=70.90, stdev=40.63, samples=168 iops : min= 1, max= 52, avg=17.41, stdev=10.27, samples=168 write: IOPS=18, BW=72.8KiB/s (74.5kB/s)(6236KiB/85680msec); 0 zone resets clat (msec): min=12, max=742, avg=36.27, stdev=26.10 lat (msec): min=12, max=742, avg=36.27, stdev=26.10 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 41], 80.00th=[ 49], 90.00th=[ 61], 95.00th=[ 70], | 99.00th=[ 105], 99.50th=[ 131], 99.90th=[ 188], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 15, max= 176, per=25.00%, avg=72.76, stdev=37.74, samples=169 iops : min= 3, max= 44, avg=17.88, stdev= 9.57, samples=169 lat (msec) : 4=3.09%, 10=14.91%, 20=21.84%, 50=47.88%, 100=11.39% lat (msec) : 250=0.85%, 750=0.03% cpu : usr=0.06%, sys=12.30%, ctx=6983, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=279KiB/s (285kB/s), 68.0KiB/s-70.6KiB/s (70.6kB/s-72.3kB/s), io=23.4MiB (24.6MB), run=85680-86136msec WRITE: bw=292KiB/s (299kB/s), 72.8KiB/s-73.7KiB/s (74.5kB/s-75.5kB/s), io=24.6MiB (25.7MB), run=85680-86136msec 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=160647: Tue Aug 18 10:17:10 2026 read: IOPS=28, BW=453KiB/s (464kB/s)(5920KiB/13067msec) clat (usec): min=53, max=55673, avg=17949.07, stdev=9805.38 lat (usec): min=53, max=55673, avg=17949.67, stdev=9805.38 clat percentiles (usec): | 1.00th=[ 74], 5.00th=[ 122], 10.00th=[ 6128], 20.00th=[11600], | 30.00th=[13173], 40.00th=[15139], 50.00th=[17433], 60.00th=[19530], | 70.00th=[21890], 80.00th=[24511], 90.00th=[28967], 95.00th=[34866], | 99.00th=[46924], 99.50th=[53740], 99.90th=[55837], 99.95th=[55837], | 99.99th=[55837] bw ( KiB/s): min= 223, max= 800, per=24.10%, avg=441.72, stdev=112.40, samples=25 iops : min= 13, max= 50, avg=27.08, stdev= 7.14, samples=25 write: IOPS=30, BW=487KiB/s (499kB/s)(6368KiB/13067msec); 0 zone resets clat (usec): min=1494, max=83367, avg=16095.78, stdev=11420.63 lat (usec): min=1494, max=83368, avg=16098.34, stdev=11419.94 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 4047], 10.00th=[ 4948], 20.00th=[ 6063], | 30.00th=[ 8717], 40.00th=[11207], 50.00th=[13566], 60.00th=[16319], | 70.00th=[19792], 80.00th=[23725], 90.00th=[29492], 95.00th=[35914], | 99.00th=[62129], 99.50th=[65799], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 256, max= 640, per=24.62%, avg=474.68, stdev=94.61, samples=25 iops : min= 16, max= 40, avg=29.16, stdev= 5.98, samples=25 lat (usec) : 100=1.04%, 250=3.12% lat (msec) : 2=0.91%, 4=1.56%, 10=18.49%, 20=41.28%, 50=32.55% lat (msec) : 100=1.04% cpu : usr=0.07%, sys=30.52%, ctx=2858, 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=160648: Tue Aug 18 10:17:10 2026 read: IOPS=27, BW=447KiB/s (457kB/s)(5744KiB/12858msec) clat (usec): min=34, max=49487, avg=17475.73, stdev=9103.74 lat (usec): min=34, max=49487, avg=17476.74, stdev=9103.93 clat percentiles (usec): | 1.00th=[ 102], 5.00th=[ 128], 10.00th=[ 8160], 20.00th=[11338], | 30.00th=[13435], 40.00th=[15139], 50.00th=[16909], 60.00th=[18744], | 70.00th=[21365], 80.00th=[24249], 90.00th=[27919], 95.00th=[32900], | 99.00th=[45351], 99.50th=[49021], 99.90th=[49546], 99.95th=[49546], | 99.99th=[49546] bw ( KiB/s): min= 223, max= 606, per=24.36%, avg=446.60, stdev=103.69, samples=25 iops : min= 13, max= 37, avg=27.40, stdev= 6.46, samples=25 write: IOPS=31, BW=509KiB/s (521kB/s)(6544KiB/12858msec); 0 zone resets clat (usec): min=1174, max=73087, avg=15970.41, stdev=11157.64 lat (usec): min=1175, max=73088, avg=15971.96, stdev=11157.58 clat percentiles (usec): | 1.00th=[ 2114], 5.00th=[ 4555], 10.00th=[ 5080], 20.00th=[ 6259], | 30.00th=[ 8979], 40.00th=[11338], 50.00th=[13566], 60.00th=[16450], | 70.00th=[19006], 80.00th=[23725], 90.00th=[30540], 95.00th=[35390], | 99.00th=[57934], 99.50th=[68682], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 351, max= 702, per=26.32%, avg=507.36, stdev=88.26, samples=25 iops : min= 21, max= 43, avg=31.20, stdev= 5.61, samples=25 lat (usec) : 50=0.13%, 100=0.26%, 250=3.52%, 1000=0.13% lat (msec) : 2=0.65%, 4=0.91%, 10=19.79%, 20=43.62%, 50=29.95% lat (msec) : 100=1.04% cpu : usr=0.05%, sys=31.80%, ctx=2781, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160649: Tue Aug 18 10:17:10 2026 read: IOPS=30, BW=492KiB/s (504kB/s)(6256KiB/12721msec) clat (usec): min=34, max=60631, avg=17199.67, stdev=9168.33 lat (usec): min=35, max=60632, avg=17200.36, stdev=9168.34 clat percentiles (usec): | 1.00th=[ 92], 5.00th=[ 123], 10.00th=[ 7111], 20.00th=[11207], | 30.00th=[13042], 40.00th=[14615], 50.00th=[16909], 60.00th=[19006], | 70.00th=[21365], 80.00th=[23725], 90.00th=[26870], 95.00th=[31065], | 99.00th=[45876], 99.50th=[57410], 99.90th=[60556], 99.95th=[60556], | 99.99th=[60556] bw ( KiB/s): min= 352, max= 672, per=26.96%, avg=494.16, stdev=89.57, samples=25 iops : min= 22, max= 42, avg=30.40, stdev= 5.55, samples=25 write: IOPS=29, BW=474KiB/s (486kB/s)(6032KiB/12721msec); 0 zone resets clat (usec): min=1085, max=99989, avg=15775.19, stdev=11312.86 lat (usec): min=1086, max=99989, avg=15776.37, stdev=11312.86 clat percentiles (usec): | 1.00th=[ 1909], 5.00th=[ 4359], 10.00th=[ 4948], 20.00th=[ 6194], | 30.00th=[ 7504], 40.00th=[ 10421], 50.00th=[ 12911], 60.00th=[ 15926], | 70.00th=[ 20055], 80.00th=[ 24511], 90.00th=[ 31589], 95.00th=[ 36439], | 99.00th=[ 50594], 99.50th=[ 50594], 99.90th=[100140], 99.95th=[100140], | 99.99th=[100140] bw ( KiB/s): min= 254, max= 704, per=24.46%, avg=471.60, stdev=125.89, samples=25 iops : min= 15, max= 44, avg=28.96, stdev= 8.01, samples=25 lat (usec) : 50=0.13%, 100=0.78%, 250=4.04% lat (msec) : 2=0.52%, 4=1.30%, 10=19.79%, 20=39.97%, 50=32.55% lat (msec) : 100=0.91% cpu : usr=0.09%, sys=31.16%, ctx=2726, 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=160650: Tue Aug 18 10:17:10 2026 read: IOPS=29, BW=472KiB/s (483kB/s)(6032KiB/12788msec) clat (usec): min=68, max=66256, avg=17479.59, stdev=10235.31 lat (usec): min=69, max=66256, avg=17480.18, stdev=10235.32 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 116], 10.00th=[ 157], 20.00th=[10945], | 30.00th=[13173], 40.00th=[15401], 50.00th=[17171], 60.00th=[19268], | 70.00th=[21365], 80.00th=[24511], 90.00th=[29754], 95.00th=[33817], | 99.00th=[51119], 99.50th=[63701], 99.90th=[66323], 99.95th=[66323], | 99.99th=[66323] bw ( KiB/s): min= 287, max= 669, per=25.62%, avg=469.68, stdev=91.08, samples=25 iops : min= 17, max= 41, avg=28.84, stdev= 5.72, samples=25 write: IOPS=30, BW=489KiB/s (501kB/s)(6256KiB/12788msec); 0 zone resets clat (usec): min=1019, max=60932, avg=15762.31, stdev=10332.41 lat (usec): min=1020, max=60933, avg=15763.37, stdev=10332.42 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 4293], 10.00th=[ 4948], 20.00th=[ 6194], | 30.00th=[ 8160], 40.00th=[10945], 50.00th=[13566], 60.00th=[16188], | 70.00th=[20055], 80.00th=[24249], 90.00th=[30278], 95.00th=[34866], | 99.00th=[47449], 99.50th=[51643], 99.90th=[61080], 99.95th=[61080], | 99.99th=[61080] bw ( KiB/s): min= 254, max= 800, per=25.44%, avg=490.56, stdev=125.01, samples=25 iops : min= 15, max= 50, avg=30.16, stdev= 7.85, samples=25 lat (usec) : 100=1.17%, 250=4.30%, 500=0.13%, 750=0.13% lat (msec) : 2=0.91%, 4=1.30%, 10=18.36%, 20=40.89%, 50=32.03% lat (msec) : 100=0.78% cpu : usr=0.05%, sys=31.03%, ctx=2696, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1833KiB/s (1877kB/s), 447KiB/s-492KiB/s (457kB/s-504kB/s), io=23.4MiB (24.5MB), run=12721-13067msec WRITE: bw=1929KiB/s (1975kB/s), 474KiB/s-509KiB/s (486kB/s-521kB/s), io=24.6MiB (25.8MB), run=12721-13067msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160652: Tue Aug 18 10:17:15 2026 read: IOPS=20, BW=322KiB/s (329kB/s)(5920KiB/18410msec) clat (usec): min=3057, max=83862, avg=14656.87, stdev=12507.17 lat (usec): min=3057, max=83863, avg=14657.45, stdev=12507.13 clat percentiles (usec): | 1.00th=[ 3458], 5.00th=[ 4146], 10.00th=[ 4621], 20.00th=[ 5866], | 30.00th=[ 7046], 40.00th=[ 8848], 50.00th=[10552], 60.00th=[12387], | 70.00th=[15664], 80.00th=[19792], 90.00th=[31589], 95.00th=[39584], | 99.00th=[70779], 99.50th=[74974], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 95, max= 736, per=24.48%, avg=315.83, stdev=161.08, samples=36 iops : min= 5, max= 46, avg=19.33, stdev=10.19, samples=36 write: IOPS=21, BW=346KiB/s (354kB/s)(6368KiB/18410msec); 0 zone resets clat (msec): min=13, max=117, avg=32.55, stdev=16.31 lat (msec): min=13, max=117, avg=32.55, stdev=16.31 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 18], 20.00th=[ 21], | 30.00th=[ 22], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 37], 80.00th=[ 44], 90.00th=[ 56], 95.00th=[ 66], | 99.00th=[ 96], 99.50th=[ 111], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 95, max= 608, per=25.27%, avg=342.97, stdev=151.02, samples=36 iops : min= 5, max= 38, avg=21.03, stdev= 9.67, samples=36 lat (msec) : 4=1.95%, 10=19.66%, 20=27.21%, 50=43.49%, 100=7.29% lat (msec) : 250=0.39% cpu : usr=0.13%, sys=12.17%, ctx=1602, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160653: Tue Aug 18 10:17:15 2026 read: IOPS=19, BW=312KiB/s (320kB/s)(5744KiB/18409msec) clat (usec): min=3061, max=84547, avg=14315.67, stdev=12989.80 lat (usec): min=3062, max=84547, avg=14316.26, stdev=12989.75 clat percentiles (usec): | 1.00th=[ 3228], 5.00th=[ 3818], 10.00th=[ 4490], 20.00th=[ 5538], | 30.00th=[ 6587], 40.00th=[ 8094], 50.00th=[10159], 60.00th=[12125], | 70.00th=[14877], 80.00th=[20841], 90.00th=[27395], 95.00th=[43779], | 99.00th=[69731], 99.50th=[73925], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 95, max= 800, per=24.15%, avg=311.56, stdev=172.00, samples=36 iops : min= 5, max= 50, avg=19.08, stdev=10.97, samples=36 write: IOPS=22, BW=355KiB/s (364kB/s)(6544KiB/18409msec); 0 zone resets clat (msec): min=12, max=116, avg=32.23, stdev=16.56 lat (msec): min=12, max=116, avg=32.23, stdev=16.56 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 17], 10.00th=[ 18], 20.00th=[ 20], | 30.00th=[ 22], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 31], | 70.00th=[ 35], 80.00th=[ 43], 90.00th=[ 55], 95.00th=[ 68], | 99.00th=[ 94], 99.50th=[ 104], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 191, max= 672, per=25.83%, avg=350.50, stdev=150.99, samples=36 iops : min= 11, max= 42, avg=21.50, stdev= 9.63, samples=36 lat (msec) : 4=2.99%, 10=19.92%, 20=25.13%, 50=43.75%, 100=7.68% lat (msec) : 250=0.52% cpu : usr=0.05%, sys=12.17%, ctx=1634, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160654: Tue Aug 18 10:17:15 2026 read: IOPS=21, BW=345KiB/s (353kB/s)(6256KiB/18154msec) clat (msec): min=3, max=106, avg=15.18, stdev=13.97 lat (msec): min=3, max=106, avg=15.18, stdev=13.97 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 22], 90.00th=[ 33], 95.00th=[ 44], | 99.00th=[ 70], 99.50th=[ 86], 99.90th=[ 107], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 127, max= 958, per=26.80%, avg=345.66, stdev=207.64, samples=35 iops : min= 7, max= 59, avg=21.20, stdev=13.09, samples=35 write: IOPS=20, BW=332KiB/s (340kB/s)(6032KiB/18154msec); 0 zone resets clat (msec): min=13, max=101, avg=32.16, stdev=15.70 lat (msec): min=13, max=101, avg=32.17, stdev=15.70 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 19], 20.00th=[ 21], | 30.00th=[ 23], 40.00th=[ 25], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 35], 80.00th=[ 42], 90.00th=[ 54], 95.00th=[ 67], | 99.00th=[ 93], 99.50th=[ 99], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 160, max= 608, per=23.88%, avg=324.11, stdev=138.13, samples=35 iops : min= 10, max= 38, avg=19.86, stdev= 8.82, samples=35 lat (msec) : 4=2.34%, 10=21.74%, 20=24.48%, 50=43.62%, 100=7.55% lat (msec) : 250=0.26% cpu : usr=0.08%, sys=12.52%, ctx=1670, 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=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=160655: Tue Aug 18 10:17:15 2026 read: IOPS=20, BW=325KiB/s (333kB/s)(6032KiB/18562msec) clat (usec): min=3128, max=88699, avg=15743.65, stdev=14707.59 lat (usec): min=3129, max=88700, avg=15744.71, stdev=14708.38 clat percentiles (usec): | 1.00th=[ 3195], 5.00th=[ 3654], 10.00th=[ 4293], 20.00th=[ 5211], | 30.00th=[ 6521], 40.00th=[ 8225], 50.00th=[10290], 60.00th=[13304], | 70.00th=[17695], 80.00th=[23200], 90.00th=[34866], 95.00th=[47973], | 99.00th=[72877], 99.50th=[86508], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 95, max= 672, per=24.40%, avg=314.72, stdev=147.43, samples=36 iops : min= 5, max= 42, avg=19.28, stdev= 9.39, samples=36 write: IOPS=21, BW=337KiB/s (345kB/s)(6256KiB/18562msec); 0 zone resets clat (msec): min=11, max=110, avg=32.02, stdev=16.17 lat (msec): min=11, max=110, avg=32.02, stdev=16.17 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 18], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 25], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 35], 80.00th=[ 43], 90.00th=[ 55], 95.00th=[ 65], | 99.00th=[ 93], 99.50th=[ 109], 99.90th=[ 111], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 96, max= 672, per=24.19%, avg=328.28, stdev=162.20, samples=36 iops : min= 6, max= 42, avg=20.11, stdev=10.31, samples=36 lat (msec) : 4=3.78%, 10=20.31%, 20=23.31%, 50=43.88%, 100=8.33% lat (msec) : 250=0.39% cpu : usr=0.06%, sys=12.06%, ctx=1595, 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=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=1290KiB/s (1321kB/s), 312KiB/s-345KiB/s (320kB/s-353kB/s), io=23.4MiB (24.5MB), run=18154-18562msec WRITE: bw=1358KiB/s (1390kB/s), 332KiB/s-355KiB/s (340kB/s-364kB/s), io=24.6MiB (25.8MB), run=18154-18562msec 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=160662: Tue Aug 18 10:17:25 2026 read: IOPS=1, BW=1957KiB/s (2004kB/s)(7168KiB/3663msec) clat (usec): min=460, max=370824, avg=223955.93, stdev=111126.89 lat (usec): min=461, max=370826, avg=223957.09, stdev=111127.08 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 461], 10.00th=[ 461], 20.00th=[217056], | 30.00th=[229639], 40.00th=[229639], 50.00th=[238027], 60.00th=[246416], | 70.00th=[246416], 80.00th=[267387], 90.00th=[371196], 95.00th=[371196], | 99.00th=[371196], 99.50th=[371196], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 1965, max= 3820, per=62.76%, avg=2763.25, stdev=908.13, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 write: IOPS=1, BW=1398KiB/s (1431kB/s)(5120KiB/3663msec); 0 zone resets clat (msec): min=246, max=711, avg=410.99, stdev=188.61 lat (msec): min=246, max=711, avg=411.04, stdev=188.59 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 477], 80.00th=[ 477], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1965, max= 2048, per=32.82%, avg=2023.00, stdev=39.49, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=51.86%, ctx=1649, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160663: Tue Aug 18 10:17:25 2026 read: IOPS=0, BW=440KiB/s (451kB/s)(2048KiB/4651msec) clat (usec): min=603, max=418324, avg=209464.26, stdev=295373.62 lat (usec): min=604, max=418326, avg=209465.59, stdev=295374.41 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 603], 10.00th=[ 603], 20.00th=[ 603], | 30.00th=[ 603], 40.00th=[ 603], 50.00th=[ 603], 60.00th=[417334], | 70.00th=[417334], 80.00th=[417334], 90.00th=[417334], 95.00th=[417334], | 99.00th=[417334], 99.50th=[417334], 99.90th=[417334], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 1595, max= 1965, per=40.43%, avg=1780.00, stdev=261.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2202KiB/s (2255kB/s)(10.0MiB/4651msec); 0 zone resets clat (msec): min=138, max=691, avg=417.77, stdev=196.94 lat (msec): min=138, max=692, avg=417.84, stdev=196.94 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 142], | 30.00th=[ 230], 40.00th=[ 380], 50.00th=[ 435], 60.00th=[ 460], | 70.00th=[ 472], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1910, max= 2048, per=32.50%, avg=2003.57, stdev=52.57, samples=7 iops : min= 1, max= 2, avg= 1.29, stdev= 0.49, samples=7 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=41.67%, 750=25.00% cpu : usr=0.02%, sys=40.86%, ctx=424, 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=160664: Tue Aug 18 10:17:25 2026 read: IOPS=1, BW=1506KiB/s (1542kB/s)(6144KiB/4079msec) clat (usec): min=607, max=410626, avg=198188.71, stdev=132086.55 lat (usec): min=607, max=410626, avg=198189.49, stdev=132086.62 clat percentiles (usec): | 1.00th=[ 611], 5.00th=[ 611], 10.00th=[ 611], 20.00th=[152044], | 30.00th=[152044], 40.00th=[198181], 50.00th=[198181], 60.00th=[202376], | 70.00th=[227541], 80.00th=[227541], 90.00th=[408945], 95.00th=[408945], | 99.00th=[408945], 99.50th=[408945], 99.90th=[408945], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 1965, max= 3820, per=55.96%, avg=2463.75, stdev=904.77, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1506KiB/s (1542kB/s)(6144KiB/4079msec); 0 zone resets clat (msec): min=194, max=684, avg=479.73, stdev=214.73 lat (msec): min=194, max=684, avg=479.81, stdev=214.75 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 609], | 70.00th=[ 617], 80.00th=[ 617], 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= 2039, max= 3175, per=37.76%, avg=2327.50, stdev=565.02, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=8.33%, 750=33.33% cpu : usr=0.00%, sys=38.43%, ctx=630, 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=160665: Tue Aug 18 10:17:25 2026 read: IOPS=1, BW=1291KiB/s (1322kB/s)(5120KiB/3967msec) clat (usec): min=493, max=319096, avg=135772.91, stdev=154484.97 lat (usec): min=494, max=319098, avg=135774.07, stdev=154485.25 clat percentiles (usec): | 1.00th=[ 494], 5.00th=[ 494], 10.00th=[ 494], 20.00th=[ 494], | 30.00th=[ 515], 40.00th=[ 515], 50.00th=[ 76022], 60.00th=[ 76022], | 70.00th=[283116], 80.00th=[283116], 90.00th=[320865], 95.00th=[320865], | 99.00th=[320865], 99.50th=[320865], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 3930, max= 4063, per=90.77%, avg=3996.50, stdev=94.05, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1807KiB/s (1850kB/s)(7168KiB/3967msec); 0 zone resets clat (msec): min=191, max=772, avg=465.30, stdev=239.24 lat (msec): min=191, max=772, avg=465.35, stdev=239.26 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 205], | 30.00th=[ 262], 40.00th=[ 262], 50.00th=[ 575], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 651], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1602, max= 2048, per=31.25%, avg=1926.00, stdev=189.68, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 100=8.33%, 250=16.67%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=38.40%, ctx=460, 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=4403KiB/s (4509kB/s), 440KiB/s-1957KiB/s (451kB/s-2004kB/s), io=20.0MiB (20.0MB), run=3663-4651msec WRITE: bw=6165KiB/s (6313kB/s), 1398KiB/s-2202KiB/s (1431kB/s-2255kB/s), io=28.0MiB (29.4MB), run=3663-4651msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160667: Tue Aug 18 10:17:26 2026 read: IOPS=1, BW=1632KiB/s (1671kB/s)(7168KiB/4393msec) clat (msec): min=76, max=797, avg=351.78, stdev=302.49 lat (msec): min=76, max=797, avg=351.78, stdev=302.49 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 96], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 241], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 760], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1747, max= 4096, per=65.48%, avg=2922.50, stdev=1196.09, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.29, samples=4 write: IOPS=1, BW=1165KiB/s (1193kB/s)(5120KiB/4393msec); 0 zone resets clat (msec): min=130, max=964, avg=359.54, stdev=345.32 lat (msec): min=130, max=964, avg=359.62, stdev=345.32 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 131], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 215], 60.00th=[ 215], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 2000, max= 4096, per=43.24%, avg=2702.33, stdev=1206.96, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 100=16.67%, 250=41.67%, 500=16.67%, 1000=25.00% cpu : usr=0.00%, sys=13.21%, ctx=342, 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=160668: Tue Aug 18 10:17:26 2026 read: IOPS=0, BW=446KiB/s (457kB/s)(2048KiB/4588msec) clat (msec): min=118, max=602, avg=360.95, stdev=342.20 lat (msec): min=118, max=602, avg=360.95, stdev=342.20 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 120], | 30.00th=[ 120], 40.00th=[ 120], 50.00th=[ 120], 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= 2015, max= 2048, per=45.52%, avg=2031.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2232KiB/s (2285kB/s)(10.0MiB/4588msec); 0 zone resets clat (msec): min=41, max=852, avg=334.44, stdev=269.62 lat (msec): min=41, max=852, avg=334.53, stdev=269.62 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 105], | 30.00th=[ 106], 40.00th=[ 182], 50.00th=[ 271], 60.00th=[ 313], | 70.00th=[ 342], 80.00th=[ 397], 90.00th=[ 735], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 1899, max= 4096, per=44.35%, avg=2771.20, stdev=1095.13, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (msec) : 50=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.07%, sys=23.33%, ctx=272, 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=160669: Tue Aug 18 10:17:26 2026 read: IOPS=1, BW=1432KiB/s (1466kB/s)(6144KiB/4292msec) clat (msec): min=59, max=696, avg=262.04, stdev=258.44 lat (msec): min=59, max=696, avg=262.04, stdev=258.44 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 63], | 30.00th=[ 63], 40.00th=[ 73], 50.00th=[ 73], 60.00th=[ 253], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1899, max= 6144, per=75.09%, avg=3351.33, stdev=2419.17, samples=3 iops : min= 1, max= 6, avg= 2.67, stdev= 2.89, samples=3 write: IOPS=1, BW=1432KiB/s (1466kB/s)(6144KiB/4292msec); 0 zone resets clat (msec): min=102, max=754, avg=429.66, stdev=267.10 lat (msec): min=102, max=754, avg=429.76, stdev=267.10 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 114], | 30.00th=[ 114], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 527], | 70.00th=[ 609], 80.00th=[ 609], 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= 1917, max= 2048, per=32.13%, avg=2007.80, stdev=53.71, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 100=25.00%, 250=16.67%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=10.25%, ctx=373, 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=160670: Tue Aug 18 10:17:26 2026 read: IOPS=1, BW=1128KiB/s (1155kB/s)(5120KiB/4540msec) clat (msec): min=53, max=633, avg=205.01, stdev=242.44 lat (msec): min=53, max=633, avg=205.01, stdev=242.44 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 54], | 30.00th=[ 70], 40.00th=[ 70], 50.00th=[ 131], 60.00th=[ 131], | 70.00th=[ 138], 80.00th=[ 138], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1579KiB/s (1617kB/s)(7168KiB/4540msec); 0 zone resets clat (msec): min=114, max=1227, avg=478.73, stdev=438.37 lat (msec): min=114, max=1227, avg=478.80, stdev=438.38 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 124], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 241], 60.00th=[ 514], | 70.00th=[ 514], 80.00th=[ 927], 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= 1917, max= 4023, per=40.02%, avg=2500.75, stdev=1016.36, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=16.67%, 250=50.00%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=11.68%, ctx=199, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4464KiB/s (4571kB/s), 446KiB/s-1632KiB/s (457kB/s-1671kB/s), io=20.0MiB (20.0MB), run=4292-4588msec WRITE: bw=6249KiB/s (6399kB/s), 1165KiB/s-2232KiB/s (1193kB/s-2285kB/s), io=28.0MiB (29.4MB), run=4292-4588msec 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=160677: Tue Aug 18 10:17:35 2026 read: IOPS=1, BW=5857KiB/s (5998kB/s)(12.0MiB/2098msec) clat (msec): min=516, max=990, avg=688.50, stdev=262.70 lat (msec): min=516, max=990, avg=688.50, stdev=262.70 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.05%, sys=48.12%, ctx=2627, 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=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=160678: Tue Aug 18 10:17:35 2026 read: IOPS=0, BW=1435KiB/s (1469kB/s)(4096KiB/2855msec) clat (nsec): min=978555k, max=978555k, avg=978554983.00, stdev= 0.00 lat (nsec): min=978557k, max=978557k, avg=978557355.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 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= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2869KiB/s (2938kB/s)(8192KiB/2855msec); 0 zone resets clat (msec): min=211, max=1644, avg=928.18, stdev=1013.58 lat (msec): min=211, max=1645, avg=928.45, stdev=1013.58 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 211], 60.00th=[ 1653], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=16.75%, ctx=586, 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=160679: Tue Aug 18 10:17:35 2026 write: IOPS=1, BW=4975KiB/s (5094kB/s)(12.0MiB/2470msec); 0 zone resets clat (msec): min=518, max=1025, avg=814.09, stdev=263.96 lat (msec): min=518, max=1025, avg=814.41, stdev=263.98 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 8143, max= 8192, per=71.16%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.08%, sys=12.39%, ctx=64, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=160680: Tue Aug 18 10:17:35 2026 write: IOPS=1, BW=5583KiB/s (5717kB/s)(12.0MiB/2201msec); 0 zone resets clat (msec): min=364, max=1144, avg=726.16, stdev=393.00 lat (msec): min=364, max=1144, avg=726.44, stdev=393.02 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8192, max= 8192, per=71.38%, 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=12.86%, ctx=79, 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 Run status group 0 (all jobs): READ: bw=5739KiB/s (5876kB/s), 1435KiB/s-5857KiB/s (1469kB/s-5998kB/s), io=16.0MiB (16.8MB), run=2098-2855msec WRITE: bw=11.2MiB/s (11.8MB/s), 2869KiB/s-5583KiB/s (2938kB/s-5717kB/s), io=32.0MiB (33.6MB), run=2201-2855msec rand-rw: (groupid=0, jobs=1): err= 0: pid=160681: Tue Aug 18 10:17:35 2026 read: IOPS=1, BW=4798KiB/s (4913kB/s)(12.0MiB/2561msec) clat (msec): min=506, max=1063, avg=846.44, stdev=297.99 lat (msec): min=506, max=1063, avg=846.44, stdev=297.99 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] 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) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=11.68%, ctx=107, 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=160682: Tue Aug 18 10:17:35 2026 read: IOPS=0, BW=1589KiB/s (1628kB/s)(4096KiB/2577msec) clat (nsec): min=1286.7M, max=1286.7M, avg=1286663466.00, stdev= 0.00 lat (nsec): min=1286.7M, max=1286.7M, avg=1286664693.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1284], 5.00th=[ 1284], 10.00th=[ 1284], 20.00th=[ 1284], | 30.00th=[ 1284], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] 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=3179KiB/s (3255kB/s)(8192KiB/2577msec); 0 zone resets clat (msec): min=370, max=903, avg=637.18, stdev=376.82 lat (msec): min=371, max=903, avg=637.49, stdev=376.85 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 372], 10.00th=[ 372], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 902], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 8000, max= 8000, per=67.90%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=10.95%, ctx=62, 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=160683: Tue Aug 18 10:17:35 2026 write: IOPS=1, BW=4419KiB/s (4525kB/s)(12.0MiB/2781msec); 0 zone resets clat (msec): min=421, max=1813, avg=921.82, stdev=774.06 lat (msec): min=421, max=1813, avg=922.09, stdev=774.08 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 531], 50.00th=[ 531], 60.00th=[ 531], | 70.00th=[ 1821], 80.00th=[ 1821], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 8000, max= 8192, per=68.71%, avg=8096.00, stdev=135.76, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.20%, ctx=129, 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=160684: Tue Aug 18 10:17:35 2026 write: IOPS=1, BW=5063KiB/s (5185kB/s)(12.0MiB/2427msec); 0 zone resets clat (msec): min=234, max=1628, avg=805.00, stdev=730.29 lat (msec): min=234, max=1628, avg=805.34, stdev=730.39 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 234], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8192, max= 8192, per=69.53%, 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=0.04%, sys=11.95%, ctx=86, 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=6358KiB/s (6510kB/s), 1589KiB/s-4798KiB/s (1628kB/s-4913kB/s), io=16.0MiB (16.8MB), run=2561-2577msec WRITE: bw=11.5MiB/s (12.1MB/s), 3179KiB/s-5063KiB/s (3255kB/s-5185kB/s), io=32.0MiB (33.6MB), run=2427-2781msec