== sanity test 398b: DIO and buffer IO race ============== 20:35:04 (1787618104) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.62729 s, 8.9 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=144214: Mon Aug 24 20:37:34 2026 read: IOPS=11, BW=45.9KiB/s (47.0kB/s)(5992KiB/130541msec) clat (usec): min=30, max=667372, avg=41485.04, stdev=36693.46 lat (usec): min=30, max=667374, avg=41489.22, stdev=36691.38 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 78], 20.00th=[ 17957], | 30.00th=[ 24249], 40.00th=[ 29230], 50.00th=[ 34866], 60.00th=[ 40633], | 70.00th=[ 49546], 80.00th=[ 62129], 90.00th=[ 81265], 95.00th=[103285], | 99.00th=[143655], 99.50th=[177210], 99.90th=[425722], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 7, max= 111, per=25.27%, avg=45.74, stdev=21.62, samples=254 iops : min= 1, max= 27, avg=10.80, stdev= 5.44, samples=254 write: IOPS=12, BW=48.2KiB/s (49.4kB/s)(6296KiB/130541msec); 0 zone resets clat (usec): min=918, max=522514, avg=43343.16, stdev=46364.36 lat (usec): min=918, max=522515, avg=43346.23, stdev=46366.50 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1156], 10.00th=[ 1352], 20.00th=[ 3294], | 30.00th=[ 7635], 40.00th=[ 18220], 50.00th=[ 31065], 60.00th=[ 43779], | 70.00th=[ 59507], 80.00th=[ 76022], 90.00th=[103285], 95.00th=[131597], | 99.00th=[196084], 99.50th=[221250], 99.90th=[283116], 99.95th=[522191], | 99.99th=[522191] bw ( KiB/s): min= 7, max= 125, per=25.31%, avg=48.08, stdev=21.25, samples=254 iops : min= 1, max= 31, avg=11.39, stdev= 5.38, samples=254 lat (usec) : 50=0.75%, 100=4.65%, 250=0.36%, 500=0.07%, 750=0.10% lat (usec) : 1000=0.36% lat (msec) : 2=7.10%, 4=4.30%, 10=5.86%, 20=9.05%, 50=34.41% lat (msec) : 100=24.74%, 250=8.11%, 500=0.10%, 750=0.07% cpu : usr=0.07%, sys=4.57%, ctx=6181, 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=144215: Mon Aug 24 20:37:34 2026 read: IOPS=11, BW=45.5KiB/s (46.6kB/s)(5940KiB/130561msec) clat (usec): min=27, max=759332, avg=42349.33, stdev=38828.87 lat (usec): min=27, max=759333, avg=42350.88, stdev=38828.92 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 58], 10.00th=[ 77], 20.00th=[ 17957], | 30.00th=[ 23200], 40.00th=[ 28181], 50.00th=[ 33817], 60.00th=[ 41681], | 70.00th=[ 50594], 80.00th=[ 64226], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[152044], 99.50th=[177210], 99.90th=[350225], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 7, max= 118, per=24.98%, avg=45.22, stdev=21.77, samples=255 iops : min= 1, max= 29, avg=10.66, stdev= 5.46, samples=255 write: IOPS=12, BW=48.6KiB/s (49.8kB/s)(6348KiB/130561msec); 0 zone resets clat (usec): min=653, max=516911, avg=42549.07, stdev=45662.82 lat (usec): min=653, max=516912, avg=42551.22, stdev=45662.55 clat percentiles (usec): | 1.00th=[ 1004], 5.00th=[ 1139], 10.00th=[ 1352], 20.00th=[ 3720], | 30.00th=[ 7308], 40.00th=[ 19268], 50.00th=[ 31065], 60.00th=[ 42206], | 70.00th=[ 56361], 80.00th=[ 73925], 90.00th=[100140], 95.00th=[130548], | 99.00th=[191890], 99.50th=[212861], 99.90th=[350225], 99.95th=[517997], | 99.99th=[517997] bw ( KiB/s): min= 7, max= 111, per=25.27%, avg=48.02, stdev=21.37, samples=256 iops : min= 1, max= 27, avg=11.37, stdev= 5.39, samples=256 lat (usec) : 50=0.91%, 100=4.39%, 250=0.39%, 500=0.03%, 750=0.13% lat (usec) : 1000=0.39% lat (msec) : 2=6.77%, 4=3.55%, 10=6.84%, 20=8.92%, 50=35.19% lat (msec) : 100=24.22%, 250=8.07%, 500=0.13%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=4.62%, ctx=6115, 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=144216: Mon Aug 24 20:37:34 2026 read: IOPS=11, BW=45.6KiB/s (46.7kB/s)(6028KiB/132218msec) clat (usec): min=33, max=709708, avg=41635.19, stdev=38652.18 lat (usec): min=33, max=709708, avg=41636.85, stdev=38652.10 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 84], 20.00th=[ 17695], | 30.00th=[ 23200], 40.00th=[ 28967], 50.00th=[ 34341], 60.00th=[ 40633], | 70.00th=[ 49021], 80.00th=[ 62653], 90.00th=[ 81265], 95.00th=[100140], | 99.00th=[143655], 99.50th=[204473], 99.90th=[446694], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 151, per=25.19%, avg=45.59, stdev=22.61, samples=258 iops : min= 1, max= 37, avg=10.76, stdev= 5.69, samples=258 write: IOPS=11, BW=47.3KiB/s (48.5kB/s)(6260KiB/132218msec); 0 zone resets clat (usec): min=695, max=829961, avg=44268.57, stdev=50443.24 lat (usec): min=695, max=829965, avg=44270.78, stdev=50442.97 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1139], 10.00th=[ 1352], 20.00th=[ 3556], | 30.00th=[ 7046], 40.00th=[ 18220], 50.00th=[ 31589], 60.00th=[ 43779], | 70.00th=[ 58459], 80.00th=[ 76022], 90.00th=[105382], 95.00th=[137364], | 99.00th=[196084], 99.50th=[235930], 99.90th=[387974], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 7, max= 166, per=24.83%, avg=47.17, stdev=22.03, samples=259 iops : min= 1, max= 41, avg=11.15, stdev= 5.53, samples=259 lat (usec) : 50=0.78%, 100=4.33%, 250=0.33%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.39% lat (msec) : 2=6.80%, 4=3.84%, 10=6.97%, 20=8.98%, 50=34.44% lat (msec) : 100=24.84%, 250=7.81%, 500=0.23%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=4.69%, ctx=6355, 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=144217: Mon Aug 24 20:37:34 2026 read: IOPS=11, BW=45.0KiB/s (47.1kB/s)(6052KiB/131587msec) clat (usec): min=33, max=254985, avg=40850.16, stdev=32329.92 lat (usec): min=34, max=254986, avg=40853.37, stdev=32329.74 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 57], 10.00th=[ 70], 20.00th=[ 16581], | 30.00th=[ 22938], 40.00th=[ 28181], 50.00th=[ 34341], 60.00th=[ 41681], | 70.00th=[ 51643], 80.00th=[ 64226], 90.00th=[ 82314], 95.00th=[ 98042], | 99.00th=[147850], 99.50th=[170918], 99.90th=[219153], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 7, max= 119, per=25.25%, avg=45.71, stdev=21.43, samples=256 iops : min= 1, max= 29, avg=10.79, stdev= 5.41, samples=256 write: IOPS=11, BW=47.4KiB/s (48.5kB/s)(6236KiB/131587msec); 0 zone resets clat (usec): min=821, max=903029, avg=44649.76, stdev=52475.63 lat (usec): min=822, max=903031, avg=44651.90, stdev=52476.04 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1156], 10.00th=[ 1516], 20.00th=[ 3359], | 30.00th=[ 7701], 40.00th=[ 18482], 50.00th=[ 30016], 60.00th=[ 42206], | 70.00th=[ 59507], 80.00th=[ 78119], 90.00th=[108528], 95.00th=[133694], | 99.00th=[204473], 99.50th=[225444], 99.90th=[526386], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 7, max= 134, per=24.77%, avg=47.06, stdev=21.25, samples=257 iops : min= 1, max= 33, avg=11.12, stdev= 5.36, samples=257 lat (usec) : 50=0.98%, 100=5.01%, 250=0.36%, 500=0.20%, 750=0.03% lat (usec) : 1000=0.29% lat (msec) : 2=6.67%, 4=4.59%, 10=6.02%, 20=9.21%, 50=32.88% lat (msec) : 100=25.55%, 250=8.01%, 500=0.13%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=4.60%, ctx=6170, 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=182KiB/s (186kB/s), 45.5KiB/s-45.0KiB/s (46.6kB/s-47.1kB/s), io=23.4MiB (24.6MB), run=130541-132218msec WRITE: bw=190KiB/s (195kB/s), 47.3KiB/s-48.6KiB/s (48.5kB/s-49.8kB/s), io=24.6MiB (25.7MB), run=130541-132218msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144209: Mon Aug 24 20:40:17 2026 read: IOPS=5, BW=20.4KiB/s (20.9kB/s)(5992KiB/293680msec) clat (msec): min=5, max=756, avg=35.98, stdev=44.17 lat (msec): min=5, max=756, avg=35.98, stdev=44.17 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 74], 95.00th=[ 110], | 99.00th=[ 190], 99.50th=[ 239], 99.90th=[ 584], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 88, per=29.51%, avg=23.90, stdev=15.93, samples=484 iops : min= 1, max= 22, avg= 5.35, stdev= 4.03, samples=484 write: IOPS=5, BW=21.4KiB/s (21.0kB/s)(6296KiB/293680msec); 0 zone resets clat (msec): min=43, max=722, avg=152.09, stdev=74.33 lat (msec): min=43, max=722, avg=152.09, stdev=74.32 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 66], 10.00th=[ 77], 20.00th=[ 91], | 30.00th=[ 106], 40.00th=[ 121], 50.00th=[ 136], 60.00th=[ 153], | 70.00th=[ 174], 80.00th=[ 203], 90.00th=[ 253], 95.00th=[ 300], | 99.00th=[ 380], 99.50th=[ 414], 99.90th=[ 575], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 48, per=24.87%, avg=21.14, stdev=10.06, samples=572 iops : min= 1, max= 12, avg= 4.66, stdev= 2.57, samples=572 lat (msec) : 10=3.48%, 20=16.86%, 50=19.82%, 100=19.14%, 250=35.12% lat (msec) : 500=5.40%, 750=0.13%, 1000=0.03% cpu : usr=0.04%, sys=0.97%, ctx=5149, 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=144210: Mon Aug 24 20:40:17 2026 read: IOPS=5, BW=20.1KiB/s (20.6kB/s)(5940KiB/295468msec) clat (msec): min=5, max=842, avg=35.39, stdev=44.08 lat (msec): min=5, max=842, avg=35.40, stdev=44.10 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 46], 90.00th=[ 75], 95.00th=[ 109], | 99.00th=[ 190], 99.50th=[ 245], 99.90th=[ 498], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 88, per=28.88%, avg=23.39, stdev=16.09, samples=489 iops : min= 1, max= 22, avg= 5.22, stdev= 4.06, samples=489 write: IOPS=5, BW=21.5KiB/s (22.0kB/s)(6348KiB/295468msec); 0 zone resets clat (msec): min=40, max=831, avg=152.80, stdev=72.20 lat (msec): min=40, max=831, avg=152.80, stdev=72.20 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 66], 10.00th=[ 77], 20.00th=[ 93], | 30.00th=[ 107], 40.00th=[ 122], 50.00th=[ 138], 60.00th=[ 159], | 70.00th=[ 180], 80.00th=[ 207], 90.00th=[ 249], 95.00th=[ 284], | 99.00th=[ 376], 99.50th=[ 414], 99.90th=[ 523], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7, max= 71, per=24.87%, avg=21.14, stdev= 9.99, samples=576 iops : min= 1, max= 17, avg= 4.66, stdev= 2.56, samples=576 lat (msec) : 10=3.74%, 20=17.68%, 50=18.98%, 100=18.03%, 250=36.33% lat (msec) : 500=5.11%, 750=0.07%, 1000=0.07% cpu : usr=0.04%, sys=0.96%, ctx=5024, 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=144211: Mon Aug 24 20:40:17 2026 read: IOPS=5, BW=20.7KiB/s (21.2kB/s)(6028KiB/290919msec) clat (msec): min=5, max=579, avg=37.10, stdev=40.97 lat (msec): min=5, max=579, avg=37.10, stdev=40.97 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 52], 90.00th=[ 84], 95.00th=[ 110], | 99.00th=[ 188], 99.50th=[ 228], 99.90th=[ 558], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 103, per=28.86%, avg=23.38, stdev=16.44, samples=497 iops : min= 1, max= 25, avg= 5.22, stdev= 4.13, samples=497 write: IOPS=5, BW=21.5KiB/s (22.0kB/s)(6260KiB/290919msec); 0 zone resets clat (msec): min=39, max=894, avg=149.91, stdev=73.46 lat (msec): min=39, max=894, avg=149.91, stdev=73.46 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 64], 10.00th=[ 74], 20.00th=[ 91], | 30.00th=[ 106], 40.00th=[ 121], 50.00th=[ 134], 60.00th=[ 150], | 70.00th=[ 171], 80.00th=[ 201], 90.00th=[ 247], 95.00th=[ 292], | 99.00th=[ 384], 99.50th=[ 414], 99.90th=[ 575], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 7, max= 55, per=25.07%, avg=21.31, stdev= 9.92, samples=564 iops : min= 1, max= 13, avg= 4.70, stdev= 2.54, samples=564 lat (msec) : 10=3.94%, 20=16.93%, 50=18.52%, 100=19.63%, 250=36.17% lat (msec) : 500=4.62%, 750=0.16%, 1000=0.03% cpu : usr=0.04%, sys=1.00%, ctx=5059, 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=144212: Mon Aug 24 20:40:17 2026 read: IOPS=5, BW=20.7KiB/s (21.2kB/s)(6052KiB/292870msec) clat (msec): min=5, max=425, avg=35.44, stdev=36.93 lat (msec): min=5, max=425, avg=35.44, stdev=36.93 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 46], 90.00th=[ 80], 95.00th=[ 108], | 99.00th=[ 182], 99.50th=[ 224], 99.90th=[ 347], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7, max= 111, per=29.94%, avg=24.26, stdev=17.32, samples=482 iops : min= 1, max= 27, avg= 5.45, stdev= 4.36, samples=482 write: IOPS=5, BW=21.3KiB/s (21.8kB/s)(6236KiB/292870msec); 0 zone resets clat (msec): min=39, max=985, avg=153.20, stdev=77.99 lat (msec): min=39, max=985, avg=153.20, stdev=77.99 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 66], 10.00th=[ 75], 20.00th=[ 91], | 30.00th=[ 106], 40.00th=[ 121], 50.00th=[ 136], 60.00th=[ 153], | 70.00th=[ 178], 80.00th=[ 207], 90.00th=[ 255], 95.00th=[ 296], | 99.00th=[ 405], 99.50th=[ 435], 99.90th=[ 567], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 55, per=24.74%, avg=21.03, stdev= 9.86, samples=569 iops : min= 1, max= 13, avg= 4.63, stdev= 2.51, samples=569 lat (msec) : 10=3.71%, 20=16.63%, 50=20.70%, 100=18.75%, 250=34.44% lat (msec) : 500=5.57%, 750=0.16%, 1000=0.03% cpu : usr=0.04%, sys=0.94%, ctx=5029, 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=81.3KiB/s (83.2kB/s), 20.1KiB/s-20.7KiB/s (20.6kB/s-21.2kB/s), io=23.4MiB (24.6MB), run=290919-295468msec WRITE: bw=85.1KiB/s (87.1kB/s), 21.3KiB/s-21.5KiB/s (21.8kB/s-22.0kB/s), io=24.6MiB (25.7MB), run=290919-295468msec 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=144268: Mon Aug 24 20:41:02 2026 read: IOPS=11, BW=189KiB/s (194kB/s)(5920KiB/31320msec) clat (usec): min=33, max=433131, avg=44916.78, stdev=44172.26 lat (usec): min=33, max=433133, avg=44921.61, stdev=44170.08 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 79], | 30.00th=[ 19006], 40.00th=[ 29492], 50.00th=[ 38011], 60.00th=[ 47973], | 70.00th=[ 59507], 80.00th=[ 78119], 90.00th=[ 99091], 95.00th=[120062], | 99.00th=[160433], 99.50th=[173016], 99.90th=[434111], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 31, max= 441, per=26.58%, avg=188.74, stdev=78.18, samples=61 iops : min= 1, max= 27, avg=11.07, stdev= 4.96, samples=61 write: IOPS=12, BW=203KiB/s (208kB/s)(6368KiB/31320msec); 0 zone resets clat (usec): min=1342, max=320584, avg=36676.88, stdev=44595.01 lat (usec): min=1344, max=320586, avg=36679.81, stdev=44594.54 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1696], 10.00th=[ 2147], 20.00th=[ 5080], | 30.00th=[ 8356], 40.00th=[ 12911], 50.00th=[ 18744], 60.00th=[ 28443], | 70.00th=[ 42730], 80.00th=[ 62653], 90.00th=[ 96994], 95.00th=[130548], | 99.00th=[196084], 99.50th=[283116], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 31, max= 542, per=27.34%, avg=204.25, stdev=99.97, samples=61 iops : min= 1, max= 33, avg=12.03, stdev= 6.32, samples=61 lat (usec) : 50=1.17%, 100=10.42%, 250=1.17%, 500=0.13%, 750=0.13% lat (msec) : 2=4.95%, 4=4.17%, 10=8.33%, 20=10.94%, 50=27.60% lat (msec) : 100=21.74%, 250=8.85%, 500=0.39% cpu : usr=0.10%, sys=4.79%, ctx=1265, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144269: Mon Aug 24 20:41:02 2026 read: IOPS=10, BW=171KiB/s (175kB/s)(5744KiB/33521msec) clat (usec): min=39, max=292845, avg=50089.67, stdev=42365.94 lat (usec): min=39, max=292847, avg=50090.97, stdev=42365.92 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 56], 10.00th=[ 66], 20.00th=[ 408], | 30.00th=[ 28443], 40.00th=[ 38011], 50.00th=[ 45876], 60.00th=[ 52167], | 70.00th=[ 62653], 80.00th=[ 78119], 90.00th=[102237], 95.00th=[125305], | 99.00th=[189793], 99.50th=[225444], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 31, max= 383, per=24.21%, avg=171.91, stdev=81.04, samples=65 iops : min= 1, max= 23, avg= 9.98, stdev= 5.07, samples=65 write: IOPS=12, BW=195KiB/s (200kB/s)(6544KiB/33521msec); 0 zone resets clat (usec): min=1292, max=309295, avg=37476.26, stdev=42337.45 lat (usec): min=1294, max=309296, avg=37478.44, stdev=42337.42 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1598], 10.00th=[ 1860], 20.00th=[ 5080], | 30.00th=[ 7832], 40.00th=[ 12518], 50.00th=[ 19006], 60.00th=[ 32113], | 70.00th=[ 47973], 80.00th=[ 68682], 90.00th=[ 98042], 95.00th=[120062], | 99.00th=[168821], 99.50th=[196084], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 62, max= 416, per=26.53%, avg=198.20, stdev=81.48, samples=64 iops : min= 3, max= 26, avg=11.66, stdev= 5.17, samples=64 lat (usec) : 50=1.43%, 100=7.55%, 250=0.13%, 500=0.26%, 750=0.26% lat (msec) : 2=5.86%, 4=3.52%, 10=9.77%, 20=9.38%, 50=26.30% lat (msec) : 100=25.52%, 250=9.77%, 500=0.26% cpu : usr=0.08%, sys=4.84%, ctx=1349, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144270: Mon Aug 24 20:41:02 2026 read: IOPS=11, BW=186KiB/s (190kB/s)(6256KiB/33699msec) clat (usec): min=35, max=251217, avg=48375.11, stdev=41694.37 lat (usec): min=35, max=251218, avg=48376.72, stdev=41694.25 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 99], | 30.00th=[ 28705], 40.00th=[ 35914], 50.00th=[ 43254], 60.00th=[ 51119], | 70.00th=[ 61604], 80.00th=[ 74974], 90.00th=[102237], 95.00th=[123208], | 99.00th=[206570], 99.50th=[229639], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 31, max= 446, per=26.09%, avg=185.26, stdev=86.68, samples=66 iops : min= 1, max= 27, avg=10.83, stdev= 5.42, samples=66 write: IOPS=11, BW=179KiB/s (183kB/s)(6032KiB/33699msec); 0 zone resets clat (usec): min=1350, max=343000, avg=38694.55, stdev=47586.62 lat (usec): min=1351, max=343002, avg=38697.15, stdev=47586.60 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1647], 10.00th=[ 2008], 20.00th=[ 4228], | 30.00th=[ 7832], 40.00th=[ 11469], 50.00th=[ 20317], 60.00th=[ 34341], | 70.00th=[ 47973], 80.00th=[ 66847], 90.00th=[ 92799], 95.00th=[129500], | 99.00th=[227541], 99.50th=[250610], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 31, max= 349, per=23.53%, avg=175.80, stdev=83.31, samples=66 iops : min= 1, max= 21, avg=10.24, stdev= 5.25, samples=66 lat (usec) : 50=1.17%, 100=9.11%, 250=0.52%, 500=0.26%, 1000=0.13% lat (msec) : 2=4.95%, 4=4.95%, 10=8.46%, 20=7.42%, 50=27.73% lat (msec) : 100=25.65%, 250=9.24%, 500=0.39% cpu : usr=0.07%, sys=4.29%, ctx=1390, 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=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=144271: Mon Aug 24 20:41:02 2026 read: IOPS=11, BW=182KiB/s (186kB/s)(6032KiB/33233msec) clat (usec): min=33, max=406431, avg=48031.24, stdev=48708.03 lat (usec): min=33, max=406433, avg=48032.53, stdev=48708.03 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 78], | 30.00th=[ 21627], 40.00th=[ 33817], 50.00th=[ 44303], 60.00th=[ 51643], | 70.00th=[ 60031], 80.00th=[ 73925], 90.00th=[ 99091], 95.00th=[122160], | 99.00th=[258999], 99.50th=[316670], 99.90th=[404751], 99.95th=[404751], | 99.99th=[404751] bw ( KiB/s): min= 63, max= 377, per=25.38%, avg=180.22, stdev=71.50, samples=65 iops : min= 3, max= 23, avg=10.52, stdev= 4.50, samples=65 write: IOPS=11, BW=188KiB/s (193kB/s)(6256KiB/33233msec); 0 zone resets clat (usec): min=1362, max=309479, avg=38115.33, stdev=42660.09 lat (usec): min=1364, max=309482, avg=38117.56, stdev=42660.20 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1713], 10.00th=[ 2573], 20.00th=[ 5538], | 30.00th=[ 8094], 40.00th=[ 12387], 50.00th=[ 21890], 60.00th=[ 32900], | 70.00th=[ 47449], 80.00th=[ 68682], 90.00th=[ 99091], 95.00th=[126354], | 99.00th=[166724], 99.50th=[217056], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 32, max= 411, per=25.62%, avg=191.38, stdev=81.51, samples=64 iops : min= 2, max= 25, avg=11.22, stdev= 5.11, samples=64 lat (usec) : 50=1.43%, 100=9.77%, 250=0.78%, 500=0.52%, 1000=0.13% lat (msec) : 2=4.30%, 4=4.04%, 10=10.55%, 20=7.03%, 50=26.69% lat (msec) : 100=25.13%, 250=8.98%, 500=0.65% cpu : usr=0.06%, sys=4.81%, ctx=1385, 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=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=711KiB/s (728kB/s), 171KiB/s-189KiB/s (175kB/s-194kB/s), io=23.4MiB (24.5MB), run=31320-33699msec WRITE: bw=748KiB/s (766kB/s), 179KiB/s-203KiB/s (183kB/s-208kB/s), io=24.6MiB (25.8MB), run=31320-33699msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144273: Mon Aug 24 20:41:48 2026 read: IOPS=4, BW=75.4KiB/s (77.2kB/s)(5920KiB/78500msec) clat (msec): min=6, max=280, avg=42.05, stdev=40.65 lat (msec): min=6, max=280, avg=42.05, stdev=40.65 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 97], 95.00th=[ 124], | 99.00th=[ 228], 99.50th=[ 253], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 30, max= 350, per=28.89%, avg=87.55, stdev=58.12, samples=131 iops : min= 1, max= 21, avg= 4.68, stdev= 3.70, samples=131 write: IOPS=5, BW=81.1KiB/s (83.1kB/s)(6368KiB/78500msec); 0 zone resets clat (msec): min=30, max=630, avg=157.83, stdev=89.04 lat (msec): min=30, max=630, avg=157.83, stdev=89.04 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 65], 10.00th=[ 77], 20.00th=[ 91], | 30.00th=[ 106], 40.00th=[ 118], 50.00th=[ 132], 60.00th=[ 153], | 70.00th=[ 178], 80.00th=[ 211], 90.00th=[ 268], 95.00th=[ 342], | 99.00th=[ 514], 99.50th=[ 550], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 30, max= 192, per=25.41%, avg=81.05, stdev=39.03, samples=153 iops : min= 1, max= 12, avg= 4.26, stdev= 2.53, samples=153 lat (msec) : 10=2.21%, 20=11.72%, 50=24.09%, 100=19.27%, 250=35.94% lat (msec) : 500=6.25%, 750=0.52% cpu : usr=0.03%, sys=1.11%, ctx=1304, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144274: Mon Aug 24 20:41:48 2026 read: IOPS=4, BW=72.8KiB/s (74.6kB/s)(5744KiB/78849msec) clat (msec): min=6, max=336, avg=43.99, stdev=45.37 lat (msec): min=6, max=336, avg=44.00, stdev=45.37 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 59], 90.00th=[ 96], 95.00th=[ 138], | 99.00th=[ 222], 99.50th=[ 288], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 23, max= 352, per=29.13%, avg=88.26, stdev=58.84, samples=127 iops : min= 1, max= 22, avg= 4.72, stdev= 3.73, samples=127 write: IOPS=5, BW=82.0KiB/s (84.0kB/s)(6544KiB/78849msec); 0 zone resets clat (msec): min=34, max=631, avg=153.91, stdev=87.02 lat (msec): min=34, max=631, avg=153.91, stdev=87.02 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 72], 20.00th=[ 87], | 30.00th=[ 102], 40.00th=[ 115], 50.00th=[ 129], 60.00th=[ 150], | 70.00th=[ 178], 80.00th=[ 207], 90.00th=[ 255], 95.00th=[ 309], | 99.00th=[ 472], 99.50th=[ 558], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 23, max= 222, per=26.81%, avg=85.51, stdev=41.72, samples=149 iops : min= 1, max= 13, avg= 4.55, stdev= 2.68, samples=149 lat (msec) : 10=1.56%, 20=11.85%, 50=22.66%, 100=21.61%, 250=36.46% lat (msec) : 500=5.47%, 750=0.39% cpu : usr=0.04%, sys=1.12%, ctx=1361, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144275: Mon Aug 24 20:41:48 2026 read: IOPS=5, BW=82.8KiB/s (84.8kB/s)(6256KiB/75576msec) clat (msec): min=6, max=392, avg=39.78, stdev=42.24 lat (msec): min=6, max=392, avg=39.79, stdev=42.23 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 50], 90.00th=[ 73], 95.00th=[ 125], | 99.00th=[ 249], 99.50th=[ 313], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 30, max= 383, per=31.85%, avg=96.49, stdev=64.95, samples=128 iops : min= 1, max= 23, avg= 5.25, stdev= 4.11, samples=128 write: IOPS=4, BW=79.8KiB/s (81.7kB/s)(6032KiB/75576msec); 0 zone resets clat (msec): min=38, max=581, avg=159.06, stdev=95.05 lat (msec): min=38, max=581, avg=159.06, stdev=95.05 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 63], 10.00th=[ 72], 20.00th=[ 87], | 30.00th=[ 104], 40.00th=[ 114], 50.00th=[ 132], 60.00th=[ 155], | 70.00th=[ 176], 80.00th=[ 218], 90.00th=[ 279], 95.00th=[ 342], | 99.00th=[ 542], 99.50th=[ 575], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 30, max= 191, per=25.12%, avg=80.14, stdev=40.25, samples=147 iops : min= 1, max= 11, avg= 4.21, stdev= 2.62, samples=147 lat (msec) : 10=2.08%, 20=14.58%, 50=24.48%, 100=19.40%, 250=32.29% lat (msec) : 500=6.38%, 750=0.78% cpu : usr=0.04%, sys=1.15%, ctx=1370, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144276: Mon Aug 24 20:41:48 2026 read: IOPS=4, BW=76.6KiB/s (78.5kB/s)(6032KiB/78696msec) clat (msec): min=6, max=317, avg=44.19, stdev=47.35 lat (msec): min=6, max=317, avg=44.19, stdev=47.35 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 40], 80.00th=[ 58], 90.00th=[ 96], 95.00th=[ 146], | 99.00th=[ 245], 99.50th=[ 300], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 30, max= 350, per=30.68%, avg=92.95, stdev=59.57, samples=126 iops : min= 1, max= 21, avg= 5.00, stdev= 3.75, samples=126 write: IOPS=4, BW=79.5KiB/s (81.4kB/s)(6256KiB/78696msec); 0 zone resets clat (msec): min=33, max=706, avg=158.51, stdev=89.98 lat (msec): min=33, max=706, avg=158.51, stdev=89.98 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 67], 10.00th=[ 78], 20.00th=[ 92], | 30.00th=[ 106], 40.00th=[ 120], 50.00th=[ 134], 60.00th=[ 157], | 70.00th=[ 182], 80.00th=[ 209], 90.00th=[ 266], 95.00th=[ 321], | 99.00th=[ 567], 99.50th=[ 609], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 30, max= 192, per=25.79%, avg=82.27, stdev=40.96, samples=149 iops : min= 1, max= 12, avg= 4.35, stdev= 2.64, samples=149 lat (msec) : 10=2.21%, 20=13.54%, 50=22.92%, 100=19.40%, 250=35.29% lat (msec) : 500=5.99%, 750=0.65% cpu : usr=0.04%, sys=1.10%, ctx=1321, 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=304KiB/s (311kB/s), 72.8KiB/s-82.8KiB/s (74.6kB/s-84.8kB/s), io=23.4MiB (24.5MB), run=75576-78849msec WRITE: bw=320KiB/s (327kB/s), 79.5KiB/s-82.0KiB/s (81.4kB/s-84.0kB/s), io=24.6MiB (25.8MB), run=75576-78849msec 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=144307: Mon Aug 24 20:42:01 2026 read: IOPS=1, BW=1715KiB/s (1756kB/s)(7168KiB/4179msec) clat (msec): min=124, max=585, avg=223.91, stdev=166.80 lat (msec): min=124, max=585, avg=223.91, stdev=166.80 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 127], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 159], 60.00th=[ 165], | 70.00th=[ 165], 80.00th=[ 268], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1954, max= 4962, per=78.48%, avg=3665.00, stdev=1546.14, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1225KiB/s (1255kB/s)(5120KiB/4179msec); 0 zone resets clat (msec): min=235, max=1058, avg=506.42, stdev=326.14 lat (msec): min=235, max=1059, avg=506.51, stdev=326.15 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 523], 80.00th=[ 523], 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= 1996, max= 2039, per=30.99%, avg=2026.25, stdev=20.25, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=50.00%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=3.66%, ctx=52, 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=144308: Mon Aug 24 20:42:01 2026 read: IOPS=0, BW=536KiB/s (549kB/s)(2048KiB/3818msec) clat (msec): min=152, max=267, avg=210.34, stdev=81.27 lat (msec): min=152, max=267, avg=210.34, stdev=81.27 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 268], | 70.00th=[ 268], 80.00th=[ 268], 90.00th=[ 268], 95.00th=[ 268], | 99.00th=[ 268], 99.50th=[ 268], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 1501, max= 2039, per=37.90%, avg=1770.00, stdev=380.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2682KiB/s (2746kB/s)(10.0MiB/3818msec); 0 zone resets clat (msec): min=206, max=754, avg=332.92, stdev=157.56 lat (msec): min=206, max=754, avg=333.04, stdev=157.55 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 228], | 30.00th=[ 259], 40.00th=[ 259], 50.00th=[ 279], 60.00th=[ 288], | 70.00th=[ 321], 80.00th=[ 368], 90.00th=[ 372], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1501, max= 4079, per=44.84%, avg=2931.67, stdev=1207.81, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=25.00%, 500=66.67%, 1000=8.33% cpu : usr=0.08%, sys=3.75%, ctx=50, 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=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=144309: Mon Aug 24 20:42:01 2026 read: IOPS=1, BW=1401KiB/s (1435kB/s)(6144KiB/4385msec) clat (msec): min=85, max=509, avg=257.08, stdev=171.47 lat (msec): min=85, max=509, avg=257.08, stdev=171.47 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 161], 50.00th=[ 161], 60.00th=[ 197], | 70.00th=[ 435], 80.00th=[ 435], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 1828, max= 4071, per=53.16%, avg=2482.50, stdev=1062.80, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1401KiB/s (1435kB/s)(6144KiB/4385msec); 0 zone resets clat (msec): min=258, max=652, avg=439.03, stdev=150.23 lat (msec): min=258, max=652, avg=439.14, stdev=150.25 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 477], | 70.00th=[ 502], 80.00th=[ 502], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1954, max= 4079, per=38.63%, avg=2525.75, stdev=1036.20, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 750=25.00% cpu : usr=0.02%, sys=3.56%, ctx=157, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144310: Mon Aug 24 20:42:01 2026 read: IOPS=1, BW=1256KiB/s (1286kB/s)(5120KiB/4076msec) clat (msec): min=100, max=545, avg=269.59, stdev=165.81 lat (msec): min=100, max=545, avg=269.59, stdev=165.81 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 249], 60.00th=[ 249], | 70.00th=[ 253], 80.00th=[ 253], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 2035, max= 4071, per=58.14%, avg=2715.00, stdev=1174.33, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1759KiB/s (1801kB/s)(7168KiB/4076msec); 0 zone resets clat (msec): min=196, max=522, avg=364.05, stdev=124.83 lat (msec): min=196, max=522, avg=364.21, stdev=124.78 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 268], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 321], 60.00th=[ 414], | 70.00th=[ 414], 80.00th=[ 518], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 1673, max= 4079, per=35.90%, avg=2347.40, stdev=978.40, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=33.33%, 500=41.67%, 750=25.00% cpu : usr=0.00%, sys=3.09%, ctx=53, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=4670KiB/s (4783kB/s), 536KiB/s-1715KiB/s (549kB/s-1756kB/s), io=20.0MiB (20.0MB), run=3818-4385msec WRITE: bw=6539KiB/s (6696kB/s), 1225KiB/s-2682KiB/s (1255kB/s-2746kB/s), io=28.0MiB (29.4MB), run=3818-4385msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144312: Mon Aug 24 20:42:02 2026 read: IOPS=2, BW=2142KiB/s (2194kB/s)(7168KiB/3346msec) clat (msec): min=5, max=346, avg=233.65, stdev=108.68 lat (msec): min=5, max=346, avg=233.65, stdev=108.68 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 220], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 262], 60.00th=[ 279], | 70.00th=[ 279], 80.00th=[ 292], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 1921, max= 4047, per=51.63%, avg=2822.75, stdev=1026.16, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1530KiB/s (1567kB/s)(5120KiB/3346msec); 0 zone resets clat (msec): min=59, max=599, avg=340.82, stdev=240.29 lat (msec): min=59, max=599, avg=340.88, stdev=240.30 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 59], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 575], 80.00th=[ 575], 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= 1921, max= 6131, per=43.95%, avg=3363.67, stdev=2397.31, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 10=8.33%, 100=8.33%, 250=25.00%, 500=41.67%, 750=16.67% cpu : usr=0.00%, sys=16.26%, ctx=222, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144313: Mon Aug 24 20:42:02 2026 read: IOPS=0, BW=547KiB/s (560kB/s)(2048KiB/3746msec) clat (msec): min=218, max=273, avg=245.60, stdev=38.90 lat (msec): min=218, max=273, avg=245.60, stdev=38.90 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 218], 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= 1546, max= 2043, per=32.82%, avg=1794.50, stdev=351.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2734KiB/s (2799kB/s)(10.0MiB/3746msec); 0 zone resets clat (msec): min=111, max=840, avg=325.27, stdev=222.17 lat (msec): min=111, max=840, avg=325.39, stdev=222.22 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 150], | 30.00th=[ 167], 40.00th=[ 218], 50.00th=[ 251], 60.00th=[ 268], | 70.00th=[ 279], 80.00th=[ 439], 90.00th=[ 531], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1546, max= 6071, per=45.91%, avg=3513.80, stdev=1803.10, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=16.77%, ctx=120, 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=144314: Mon Aug 24 20:42:02 2026 read: IOPS=1, BW=1885KiB/s (1930kB/s)(6144KiB/3259msec) clat (usec): min=336, max=743626, avg=241745.32, stdev=300574.26 lat (usec): min=336, max=743627, avg=241746.29, stdev=300574.24 clat percentiles (usec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 474], | 30.00th=[ 474], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[333448], | 70.00th=[371196], 80.00th=[371196], 90.00th=[742392], 95.00th=[742392], | 99.00th=[742392], 99.50th=[742392], 99.90th=[742392], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 1921, max= 6131, per=61.53%, avg=3363.67, stdev=2397.31, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1885KiB/s (1930kB/s)(6144KiB/3259msec); 0 zone resets clat (msec): min=161, max=460, avg=300.96, stdev=118.08 lat (msec): min=161, max=460, avg=301.10, stdev=118.05 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 228], 50.00th=[ 228], 60.00th=[ 317], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 1780, max= 3842, per=30.66%, avg=2347.00, stdev=843.16, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 250=25.00%, 500=41.67%, 750=8.33% cpu : usr=0.06%, sys=15.75%, ctx=231, 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=144315: Mon Aug 24 20:42:02 2026 read: IOPS=1, BW=1443KiB/s (1477kB/s)(5120KiB/3549msec) clat (usec): min=527, max=388925, avg=166314.82, stdev=174327.13 lat (usec): min=528, max=388926, avg=166315.95, stdev=174326.57 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 545], 40.00th=[ 545], 50.00th=[145753], 60.00th=[145753], | 70.00th=[295699], 80.00th=[295699], 90.00th=[387974], 95.00th=[387974], | 99.00th=[387974], 99.50th=[387974], 99.90th=[387974], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 1921, max= 6131, per=73.64%, avg=4026.00, stdev=2976.92, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=2020KiB/s (2068kB/s)(7168KiB/3549msec); 0 zone resets clat (msec): min=188, max=805, avg=387.83, stdev=230.48 lat (msec): min=188, max=805, avg=387.92, stdev=230.49 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 190], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 284], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 592], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 4047, max= 4063, per=52.98%, avg=4055.00, stdev=11.31, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 lat (usec) : 750=16.67% lat (msec) : 250=25.00%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=14.57%, ctx=133, 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=5467KiB/s (5598kB/s), 547KiB/s-2142KiB/s (560kB/s-2194kB/s), io=20.0MiB (20.0MB), run=3259-3746msec WRITE: bw=7654KiB/s (7838kB/s), 1530KiB/s-2734KiB/s (1567kB/s-2799kB/s), io=28.0MiB (29.4MB), run=3259-3746msec 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=144328: Mon Aug 24 20:42:16 2026 read: IOPS=1, BW=4560KiB/s (4669kB/s)(12.0MiB/2695msec) clat (msec): min=746, max=991, avg=846.71, stdev=128.71 lat (msec): min=746, max=991, avg=846.71, stdev=128.71 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 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= 7488, max= 8175, per=100.00%, avg=7831.50, stdev=485.78, 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=11.62%, ctx=317, 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=144329: Mon Aug 24 20:42:16 2026 read: IOPS=0, BW=1508KiB/s (1544kB/s)(4096KiB/2717msec) clat (nsec): min=857427k, max=857427k, avg=857427223.00, stdev= 0.00 lat (nsec): min=857430k, max=857430k, avg=857429770.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 860], 80.00th=[ 860], 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= 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=3015KiB/s (3087kB/s)(8192KiB/2717msec); 0 zone resets clat (msec): min=809, max=971, avg=890.65, stdev=114.87 lat (msec): min=809, max=974, avg=892.29, stdev=116.55 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 969], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 8126, max= 8126, per=83.28%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=4.53%, ctx=78, 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=144330: Mon Aug 24 20:42:16 2026 write: IOPS=0, BW=3659KiB/s (3747kB/s)(12.0MiB/3358msec); 0 zone resets clat (msec): min=322, max=1771, avg=1040.01, stdev=724.96 lat (msec): min=322, max=1772, avg=1040.52, stdev=725.03 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 1028], 50.00th=[ 1028], 60.00th=[ 1028], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7488, max= 7968, per=79.20%, avg=7728.00, stdev=339.41, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.25%, ctx=46, 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=144331: Mon Aug 24 20:42:16 2026 write: IOPS=1, BW=4123KiB/s (4222kB/s)(12.0MiB/2980msec); 0 zone resets clat (msec): min=663, max=1404, avg=985.75, stdev=379.46 lat (msec): min=664, max=1404, avg=986.20, stdev=379.41 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 894], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8110, max= 8175, per=83.44%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.47%, ctx=73, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6030KiB/s (6175kB/s), 1508KiB/s-4560KiB/s (1544kB/s-4669kB/s), io=16.0MiB (16.8MB), run=2695-2717msec WRITE: bw=9758KiB/s (9992kB/s), 3015KiB/s-4123KiB/s (3087kB/s-4222kB/s), io=32.0MiB (33.6MB), run=2717-3358msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144324: Mon Aug 24 20:42:16 2026 read: IOPS=1, BW=8116KiB/s (8311kB/s)(12.0MiB/1514msec) clat (msec): min=278, max=530, avg=439.61, stdev=140.06 lat (msec): min=278, max=530, avg=439.62, stdev=140.06 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 8047, max= 8062, per=100.00%, avg=8054.50, stdev=10.61, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=8.53%, ctx=72, 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=144325: Mon Aug 24 20:42:16 2026 read: IOPS=0, BW=1164KiB/s (1192kB/s)(4096KiB/3518msec) clat (nsec): min=1107.7M, max=1107.7M, avg=1107666652.00, stdev= 0.00 lat (nsec): min=1107.7M, max=1107.7M, avg=1107669732.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7968, max= 7968, per=100.00%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2329KiB/s (2384kB/s)(8192KiB/3518msec); 0 zone resets clat (msec): min=950, max=1277, avg=1114.16, stdev=231.57 lat (msec): min=952, max=1281, avg=1117.40, stdev=232.63 clat percentiles (msec): | 1.00th=[ 953], 5.00th=[ 953], 10.00th=[ 953], 20.00th=[ 953], | 30.00th=[ 953], 40.00th=[ 953], 50.00th=[ 953], 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= 7968, max= 7968, per=99.31%, avg=7968.00, 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=2.87%, ctx=40, 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=144326: Mon Aug 24 20:42:16 2026 write: IOPS=0, BW=3009KiB/s (3081kB/s)(12.0MiB/4084msec); 0 zone resets clat (msec): min=241, max=2622, avg=1308.33, stdev=1209.19 lat (msec): min=242, max=2622, avg=1308.86, stdev=1209.24 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 2635], 80.00th=[ 2635], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 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 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.94%, ctx=62, 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=144327: Mon Aug 24 20:42:16 2026 write: IOPS=1, BW=4683KiB/s (4795kB/s)(12.0MiB/2624msec); 0 zone resets clat (msec): min=316, max=1252, avg=791.38, stdev=468.21 lat (msec): min=317, max=1252, avg=792.00, stdev=467.89 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7236, max= 7861, per=94.09%, avg=7548.50, stdev=441.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.07%, ctx=53, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=4657KiB/s (4769kB/s), 1164KiB/s-8116KiB/s (1192kB/s-8311kB/s), io=16.0MiB (16.8MB), run=1514-3518msec WRITE: bw=8024KiB/s (8216kB/s), 2329KiB/s-4683KiB/s (2384kB/s-4795kB/s), io=32.0MiB (33.6MB), run=2624-4084msec