== sanity test 398b: DIO and buffer IO race ============== 04:10:29 (1786954229) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.71227 s, 6.5 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=179519: Mon Aug 17 04:12:55 2026 read: IOPS=12, BW=48.8KiB/s (50.0kB/s)(5992KiB/122698msec) clat (usec): min=36, max=994425, avg=44817.13, stdev=36783.65 lat (usec): min=36, max=994426, avg=44820.09, stdev=36783.17 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 13435], 10.00th=[ 17695], 20.00th=[ 23462], | 30.00th=[ 28181], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 44827], | 70.00th=[ 52691], 80.00th=[ 61604], 90.00th=[ 76022], 95.00th=[ 92799], | 99.00th=[152044], 99.50th=[181404], 99.90th=[238027], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 103, per=25.37%, avg=48.71, stdev=17.56, samples=240 iops : min= 1, max= 25, avg=11.52, stdev= 4.41, samples=240 write: IOPS=12, BW=51.3KiB/s (52.5kB/s)(6296KiB/122698msec); 0 zone resets clat (usec): min=1174, max=262067, avg=35004.72, stdev=34823.26 lat (usec): min=1176, max=262067, avg=35013.04, stdev=34824.27 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1500], 10.00th=[ 2376], 20.00th=[ 4621], | 30.00th=[ 8717], 40.00th=[ 16450], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 45351], 80.00th=[ 60556], 90.00th=[ 82314], 95.00th=[104334], | 99.00th=[143655], 99.50th=[164627], 99.90th=[214959], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 7, max= 134, per=25.33%, avg=50.92, stdev=19.39, samples=241 iops : min= 1, max= 33, avg=12.09, stdev= 4.87, samples=241 lat (usec) : 50=0.10%, 100=1.33%, 250=0.29%, 500=0.07% lat (msec) : 2=4.20%, 4=4.69%, 10=7.75%, 20=10.29%, 50=41.18% lat (msec) : 100=25.46%, 250=4.59%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.98%, ctx=7037, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179520: Mon Aug 17 04:12:55 2026 read: IOPS=11, BW=47.7KiB/s (48.9kB/s)(5940KiB/124466msec) clat (usec): min=44, max=274919, avg=45299.50, stdev=27534.01 lat (usec): min=45, max=274920, avg=45303.64, stdev=27534.96 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 14353], 10.00th=[ 17957], 20.00th=[ 23987], | 30.00th=[ 29230], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 46400], | 70.00th=[ 53740], 80.00th=[ 62129], 90.00th=[ 77071], 95.00th=[ 94897], | 99.00th=[139461], 99.50th=[160433], 99.90th=[208667], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 7, max= 103, per=24.77%, avg=47.57, stdev=17.17, samples=244 iops : min= 1, max= 25, avg=11.24, stdev= 4.32, samples=244 write: IOPS=12, BW=51.0KiB/s (52.2kB/s)(6348KiB/124466msec); 0 zone resets clat (usec): min=1123, max=948945, avg=35759.52, stdev=41252.84 lat (usec): min=1124, max=948947, avg=35767.80, stdev=41249.81 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1500], 10.00th=[ 2278], 20.00th=[ 4621], | 30.00th=[ 8717], 40.00th=[ 17957], 50.00th=[ 26084], 60.00th=[ 34866], | 70.00th=[ 45876], 80.00th=[ 61604], 90.00th=[ 83362], 95.00th=[100140], | 99.00th=[145753], 99.50th=[185598], 99.90th=[250610], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 7, max= 126, per=25.18%, avg=50.61, stdev=20.55, samples=245 iops : min= 1, max= 31, avg=12.00, stdev= 5.20, samples=245 lat (usec) : 50=0.16%, 100=0.85%, 250=0.16%, 500=0.07%, 1000=0.03% lat (msec) : 2=4.56%, 4=4.56%, 10=7.68%, 20=9.83%, 50=41.05% lat (msec) : 100=26.63%, 250=4.36%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.90%, ctx=7019, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179521: Mon Aug 17 04:12:55 2026 read: IOPS=12, BW=49.7KiB/s (50.9kB/s)(6028KiB/121180msec) clat (usec): min=44, max=908787, avg=45824.98, stdev=35888.82 lat (usec): min=44, max=908788, avg=45827.75, stdev=35889.24 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 13698], 10.00th=[ 18482], 20.00th=[ 23987], | 30.00th=[ 29230], 40.00th=[ 33817], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 54264], 80.00th=[ 64226], 90.00th=[ 80217], 95.00th=[ 93848], | 99.00th=[152044], 99.50th=[170918], 99.90th=[270533], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 7, max= 96, per=25.74%, avg=49.41, stdev=17.58, samples=238 iops : min= 1, max= 24, avg=11.70, stdev= 4.43, samples=238 write: IOPS=12, BW=51.7KiB/s (52.9kB/s)(6260KiB/121180msec); 0 zone resets clat (usec): min=1198, max=204881, avg=33055.83, stdev=33793.77 lat (usec): min=1200, max=204892, avg=33058.46, stdev=33793.31 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1500], 10.00th=[ 2024], 20.00th=[ 4113], | 30.00th=[ 7177], 40.00th=[ 14746], 50.00th=[ 22676], 60.00th=[ 32113], | 70.00th=[ 43254], 80.00th=[ 56886], 90.00th=[ 80217], 95.00th=[103285], | 99.00th=[145753], 99.50th=[156238], 99.90th=[202376], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 8, max= 142, per=25.60%, avg=51.46, stdev=21.74, samples=237 iops : min= 2, max= 35, avg=12.22, stdev= 5.47, samples=237 lat (usec) : 50=0.07%, 100=1.27%, 250=0.20%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=5.05%, 4=4.79%, 10=8.37%, 20=10.12%, 50=41.02% lat (msec) : 100=24.25%, 250=4.69%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.94%, ctx=6939, 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=179522: Mon Aug 17 04:12:55 2026 read: IOPS=12, BW=48.9KiB/s (50.1kB/s)(6052KiB/123727msec) clat (usec): min=36, max=227380, avg=44094.10, stdev=28042.05 lat (usec): min=36, max=227381, avg=44097.79, stdev=28040.93 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 11469], 10.00th=[ 17171], 20.00th=[ 22938], | 30.00th=[ 27657], 40.00th=[ 33424], 50.00th=[ 39060], 60.00th=[ 44827], | 70.00th=[ 52691], 80.00th=[ 62653], 90.00th=[ 77071], 95.00th=[ 91751], | 99.00th=[152044], 99.50th=[160433], 99.90th=[219153], 99.95th=[227541], | 99.99th=[227541] bw ( KiB/s): min= 7, max= 119, per=25.41%, avg=48.79, stdev=17.74, samples=242 iops : min= 1, max= 29, avg=11.55, stdev= 4.45, samples=242 write: IOPS=12, BW=50.4KiB/s (51.6kB/s)(6236KiB/123727msec); 0 zone resets clat (usec): min=1098, max=914707, avg=36271.48, stdev=41587.13 lat (usec): min=1098, max=914708, avg=36287.04, stdev=41582.82 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1532], 10.00th=[ 2278], 20.00th=[ 5014], | 30.00th=[ 9634], 40.00th=[ 18220], 50.00th=[ 26870], 60.00th=[ 34866], | 70.00th=[ 45351], 80.00th=[ 62129], 90.00th=[ 82314], 95.00th=[102237], | 99.00th=[156238], 99.50th=[179307], 99.90th=[287310], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 7, max= 111, per=24.99%, avg=50.24, stdev=20.02, samples=242 iops : min= 1, max= 27, avg=11.91, stdev= 5.01, samples=242 lat (usec) : 50=0.10%, 100=1.50%, 250=0.29%, 500=0.07%, 750=0.03% lat (msec) : 2=4.49%, 4=3.94%, 10=7.42%, 20=10.29%, 50=41.28% lat (msec) : 100=25.91%, 250=4.62%, 500=0.03%, 1000=0.03% cpu : usr=0.09%, sys=5.79%, ctx=7102, 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=193KiB/s (198kB/s), 47.7KiB/s-49.7KiB/s (48.9kB/s-50.9kB/s), io=23.4MiB (24.6MB), run=121180-124466msec WRITE: bw=202KiB/s (207kB/s), 50.4KiB/s-51.7KiB/s (51.6kB/s-52.9kB/s), io=24.6MiB (25.7MB), run=121180-124466msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179524: Mon Aug 17 04:13:40 2026 read: IOPS=8, BW=35.4KiB/s (36.3kB/s)(5992KiB/169133msec) clat (msec): min=5, max=1009, avg=44.22, stdev=44.24 lat (msec): min=5, max=1009, avg=44.23, stdev=44.24 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 62], 90.00th=[ 93], 95.00th=[ 122], | 99.00th=[ 186], 99.50th=[ 211], 99.90th=[ 279], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 111, per=25.30%, avg=35.67, stdev=22.54, samples=326 iops : min= 1, max= 27, avg= 8.23, stdev= 5.65, samples=326 write: IOPS=9, BW=37.2KiB/s (38.1kB/s)(6296KiB/169133msec); 0 zone resets clat (msec): min=12, max=311, avg=65.27, stdev=42.76 lat (msec): min=12, max=311, avg=65.28, stdev=42.76 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 38], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 62], | 70.00th=[ 77], 80.00th=[ 95], 90.00th=[ 123], 95.00th=[ 153], | 99.00th=[ 213], 99.50th=[ 249], 99.90th=[ 292], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 103, per=25.00%, avg=36.99, stdev=20.14, samples=330 iops : min= 1, max= 25, avg= 8.56, stdev= 5.07, samples=330 lat (msec) : 10=1.04%, 20=11.82%, 50=47.30%, 100=26.56%, 250=12.99% lat (msec) : 500=0.26%, 2000=0.03% cpu : usr=0.06%, sys=2.30%, ctx=5129, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179525: Mon Aug 17 04:13:40 2026 read: IOPS=8, BW=35.4KiB/s (36.2kB/s)(5940KiB/167871msec) clat (msec): min=5, max=865, avg=43.25, stdev=42.75 lat (msec): min=5, max=865, avg=43.25, stdev=42.75 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 61], 90.00th=[ 94], 95.00th=[ 124], | 99.00th=[ 174], 99.50th=[ 213], 99.90th=[ 347], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 135, per=25.09%, avg=35.38, stdev=23.98, samples=326 iops : min= 1, max= 33, avg= 8.16, stdev= 6.01, samples=326 write: IOPS=9, BW=37.8KiB/s (38.7kB/s)(6348KiB/167871msec); 0 zone resets clat (msec): min=10, max=306, avg=65.18, stdev=42.96 lat (msec): min=10, max=306, avg=65.19, stdev=42.96 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 38], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 62], | 70.00th=[ 74], 80.00th=[ 94], 90.00th=[ 123], 95.00th=[ 153], | 99.00th=[ 222], 99.50th=[ 245], 99.90th=[ 305], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 7, max= 103, per=25.30%, avg=37.45, stdev=20.52, samples=330 iops : min= 1, max= 25, avg= 8.67, stdev= 5.15, samples=330 lat (msec) : 10=1.30%, 20=13.44%, 50=46.09%, 100=25.94%, 250=12.86% lat (msec) : 500=0.33%, 1000=0.03% cpu : usr=0.07%, sys=2.36%, ctx=5203, 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=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=179526: Mon Aug 17 04:13:40 2026 read: IOPS=8, BW=35.7KiB/s (36.6kB/s)(6028KiB/168771msec) clat (msec): min=6, max=292, avg=45.30, stdev=37.67 lat (msec): min=6, max=292, avg=45.31, stdev=37.67 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 67], 90.00th=[ 95], 95.00th=[ 124], | 99.00th=[ 178], 99.50th=[ 218], 99.90th=[ 255], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 135, per=25.36%, avg=35.76, stdev=21.22, samples=328 iops : min= 1, max= 33, avg= 8.25, stdev= 5.33, samples=328 write: IOPS=9, BW=37.1KiB/s (37.0kB/s)(6260KiB/168771msec); 0 zone resets clat (msec): min=11, max=898, avg=64.11, stdev=46.18 lat (msec): min=11, max=898, avg=64.12, stdev=46.18 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 51], 60.00th=[ 62], | 70.00th=[ 72], 80.00th=[ 90], 90.00th=[ 117], 95.00th=[ 146], | 99.00th=[ 220], 99.50th=[ 243], 99.90th=[ 342], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 103, per=25.02%, avg=37.03, stdev=21.38, samples=329 iops : min= 1, max= 25, avg= 8.57, stdev= 5.37, samples=329 lat (msec) : 10=1.11%, 20=12.11%, 50=46.19%, 100=28.22%, 250=12.11% lat (msec) : 500=0.23%, 1000=0.03% cpu : usr=0.05%, sys=2.41%, ctx=5252, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179527: Mon Aug 17 04:13:40 2026 read: IOPS=9, BW=36.0KiB/s (36.9kB/s)(6052KiB/168011msec) clat (msec): min=6, max=346, avg=44.96, stdev=38.69 lat (msec): min=6, max=346, avg=44.96, stdev=38.69 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 65], 90.00th=[ 100], 95.00th=[ 130], | 99.00th=[ 188], 99.50th=[ 218], 99.90th=[ 255], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 135, per=25.82%, avg=36.41, stdev=23.14, samples=323 iops : min= 1, max= 33, avg= 8.41, stdev= 5.81, samples=323 write: IOPS=9, BW=37.1KiB/s (38.0kB/s)(6236KiB/168011msec); 0 zone resets clat (msec): min=10, max=887, avg=64.02, stdev=46.11 lat (msec): min=10, max=887, avg=64.03, stdev=46.11 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 59], | 70.00th=[ 72], 80.00th=[ 91], 90.00th=[ 122], 95.00th=[ 148], | 99.00th=[ 211], 99.50th=[ 245], 99.90th=[ 279], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 103, per=24.88%, avg=36.82, stdev=20.50, samples=329 iops : min= 1, max= 25, avg= 8.51, stdev= 5.14, samples=329 lat (msec) : 10=1.37%, 20=12.30%, 50=46.65%, 100=26.99%, 250=12.50% lat (msec) : 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=2.37%, ctx=5143, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=142KiB/s (145kB/s), 35.4KiB/s-36.0KiB/s (36.2kB/s-36.9kB/s), io=23.4MiB (24.6MB), run=167871-169133msec WRITE: bw=149KiB/s (152kB/s), 37.1KiB/s-37.8KiB/s (37.0kB/s-38.7kB/s), io=24.6MiB (25.7MB), run=167871-169133msec 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=179570: Mon Aug 17 04:14:28 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(5920KiB/36344msec) clat (usec): min=41, max=260178, avg=52019.36, stdev=34526.61 lat (usec): min=41, max=260180, avg=52022.91, stdev=34525.81 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 71], 10.00th=[ 155], 20.00th=[ 28705], | 30.00th=[ 35390], 40.00th=[ 42206], 50.00th=[ 46924], 60.00th=[ 56361], | 70.00th=[ 63701], 80.00th=[ 73925], 90.00th=[ 92799], 95.00th=[107480], | 99.00th=[170918], 99.50th=[196084], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 31, max= 314, per=25.51%, avg=162.76, stdev=57.61, samples=71 iops : min= 1, max= 19, avg= 9.39, stdev= 3.65, samples=71 write: IOPS=10, BW=175KiB/s (179kB/s)(6368KiB/36344msec); 0 zone resets clat (usec): min=1582, max=207892, avg=42239.70, stdev=38697.33 lat (usec): min=1584, max=207894, avg=42242.76, stdev=38698.93 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2057], 10.00th=[ 2900], 20.00th=[ 7111], | 30.00th=[ 12649], 40.00th=[ 22414], 50.00th=[ 32637], 60.00th=[ 42206], | 70.00th=[ 54264], 80.00th=[ 72877], 90.00th=[100140], 95.00th=[119014], | 99.00th=[152044], 99.50th=[189793], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 365, per=26.56%, avg=178.24, stdev=65.96, samples=70 iops : min= 1, max= 22, avg=10.36, stdev= 4.18, samples=70 lat (usec) : 50=0.13%, 100=4.04%, 250=1.04%, 500=0.13% lat (msec) : 2=1.95%, 4=5.08%, 10=6.38%, 20=7.68%, 50=33.20% lat (msec) : 100=31.90%, 250=8.33%, 500=0.13% cpu : usr=0.06%, sys=5.73%, ctx=1813, 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=179571: Mon Aug 17 04:14:28 2026 read: IOPS=9, BW=153KiB/s (157kB/s)(5744KiB/37530msec) clat (usec): min=46, max=306229, avg=52909.24, stdev=35830.02 lat (usec): min=46, max=306230, avg=52910.52, stdev=35830.04 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 95], 10.00th=[ 18220], 20.00th=[ 28705], | 30.00th=[ 34866], 40.00th=[ 42730], 50.00th=[ 49546], 60.00th=[ 56886], | 70.00th=[ 64750], 80.00th=[ 72877], 90.00th=[ 86508], 95.00th=[104334], | 99.00th=[221250], 99.50th=[299893], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 31, max= 317, per=23.88%, avg=152.34, stdev=59.35, samples=73 iops : min= 1, max= 19, avg= 8.73, stdev= 3.75, samples=73 write: IOPS=10, BW=174KiB/s (179kB/s)(6544KiB/37530msec); 0 zone resets clat (usec): min=1645, max=199330, avg=44851.53, stdev=40829.06 lat (usec): min=1648, max=199333, avg=44861.42, stdev=40826.15 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2671], 10.00th=[ 4817], 20.00th=[ 10028], | 30.00th=[ 15008], 40.00th=[ 25035], 50.00th=[ 33817], 60.00th=[ 42730], | 70.00th=[ 55313], 80.00th=[ 76022], 90.00th=[106431], 95.00th=[128451], | 99.00th=[168821], 99.50th=[187696], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 62, max= 373, per=25.76%, avg=172.88, stdev=70.06, samples=73 iops : min= 3, max= 23, avg=10.03, stdev= 4.43, samples=73 lat (usec) : 50=0.13%, 100=2.21%, 250=0.65%, 500=0.26%, 1000=0.13% lat (msec) : 2=1.82%, 4=2.60%, 10=6.12%, 20=10.03%, 50=35.81% lat (msec) : 100=30.86%, 250=9.11%, 500=0.26% cpu : usr=0.09%, sys=5.98%, ctx=1854, 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=179572: Mon Aug 17 04:14:28 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(6256KiB/37109msec) clat (usec): min=46, max=206224, avg=54928.10, stdev=32406.03 lat (usec): min=46, max=206226, avg=54931.65, stdev=32407.49 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 90], 10.00th=[ 20579], 20.00th=[ 29754], | 30.00th=[ 38011], 40.00th=[ 45351], 50.00th=[ 50070], 60.00th=[ 57410], | 70.00th=[ 66847], 80.00th=[ 79168], 90.00th=[ 91751], 95.00th=[110625], | 99.00th=[158335], 99.50th=[191890], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 63, max= 287, per=26.31%, avg=167.83, stdev=56.57, samples=72 iops : min= 3, max= 17, avg= 9.71, stdev= 3.54, samples=72 write: IOPS=10, BW=163KiB/s (166kB/s)(6032KiB/37109msec); 0 zone resets clat (usec): min=1618, max=245322, avg=41182.19, stdev=38350.32 lat (usec): min=1652, max=245324, avg=41185.39, stdev=38349.99 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2671], 10.00th=[ 4490], 20.00th=[ 7701], | 30.00th=[ 11994], 40.00th=[ 22676], 50.00th=[ 33817], 60.00th=[ 41157], | 70.00th=[ 54789], 80.00th=[ 67634], 90.00th=[ 90702], 95.00th=[109577], | 99.00th=[196084], 99.50th=[214959], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 31, max= 350, per=23.77%, avg=159.47, stdev=70.92, samples=72 iops : min= 1, max= 21, avg= 9.18, stdev= 4.48, samples=72 lat (usec) : 50=0.13%, 100=2.47%, 250=0.91%, 1000=0.13% lat (msec) : 2=0.78%, 4=3.52%, 10=8.72%, 20=6.38%, 50=34.90% lat (msec) : 100=34.51%, 250=7.55% cpu : usr=0.08%, sys=5.86%, ctx=1858, 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=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=179573: Mon Aug 17 04:14:28 2026 read: IOPS=10, BW=170KiB/s (174kB/s)(6032KiB/35414msec) clat (usec): min=50, max=175938, avg=51108.20, stdev=31320.67 lat (usec): min=51, max=175938, avg=51109.53, stdev=31320.64 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 80], 10.00th=[ 2507], 20.00th=[ 27919], | 30.00th=[ 35914], 40.00th=[ 41681], 50.00th=[ 46400], 60.00th=[ 55313], | 70.00th=[ 62653], 80.00th=[ 73925], 90.00th=[ 89654], 95.00th=[107480], | 99.00th=[141558], 99.50th=[166724], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 31, max= 352, per=26.99%, avg=172.18, stdev=66.67, samples=68 iops : min= 1, max= 22, avg= 9.99, stdev= 4.27, samples=68 write: IOPS=11, BW=177KiB/s (181kB/s)(6256KiB/35414msec); 0 zone resets clat (usec): min=1639, max=229976, avg=40219.46, stdev=38649.32 lat (usec): min=1642, max=229979, avg=40237.34, stdev=38652.30 clat percentiles (usec): | 1.00th=[ 1893], 5.00th=[ 2606], 10.00th=[ 4359], 20.00th=[ 8291], | 30.00th=[ 12518], 40.00th=[ 21103], 50.00th=[ 27657], 60.00th=[ 36963], | 70.00th=[ 50070], 80.00th=[ 68682], 90.00th=[ 99091], 95.00th=[113771], | 99.00th=[166724], 99.50th=[227541], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 32, max= 320, per=26.44%, avg=177.42, stdev=71.21, samples=69 iops : min= 2, max= 20, avg=10.32, stdev= 4.49, samples=69 lat (usec) : 100=3.65%, 250=0.78%, 500=0.39% lat (msec) : 2=0.78%, 4=4.43%, 10=8.59%, 20=7.42%, 50=36.07% lat (msec) : 100=29.30%, 250=8.59% cpu : usr=0.06%, sys=5.95%, ctx=1749, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=638KiB/s (654kB/s), 153KiB/s-170KiB/s (157kB/s-174kB/s), io=23.4MiB (24.5MB), run=35414-37530msec WRITE: bw=671KiB/s (688kB/s), 163KiB/s-177KiB/s (166kB/s-181kB/s), io=24.6MiB (25.8MB), run=35414-37530msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179574: Mon Aug 17 04:14:43 2026 read: IOPS=7, BW=114KiB/s (117kB/s)(5920KiB/51959msec) clat (msec): min=9, max=350, avg=53.77, stdev=44.92 lat (msec): min=9, max=350, avg=53.77, stdev=44.92 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 41], 60.00th=[ 47], | 70.00th=[ 57], 80.00th=[ 73], 90.00th=[ 109], 95.00th=[ 136], | 99.00th=[ 222], 99.50th=[ 296], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 380, per=25.85%, avg=118.65, stdev=69.55, samples=97 iops : min= 1, max= 23, avg= 6.65, stdev= 4.39, samples=97 write: IOPS=7, BW=123KiB/s (125kB/s)(6368KiB/51959msec); 0 zone resets clat (msec): min=15, max=283, avg=79.87, stdev=48.86 lat (msec): min=15, max=283, avg=79.88, stdev=48.86 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 29], 10.00th=[ 34], 20.00th=[ 42], | 30.00th=[ 48], 40.00th=[ 57], 50.00th=[ 66], 60.00th=[ 77], | 70.00th=[ 92], 80.00th=[ 113], 90.00th=[ 148], 95.00th=[ 190], | 99.00th=[ 236], 99.50th=[ 271], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 21, max= 285, per=25.33%, avg=122.32, stdev=62.17, samples=102 iops : min= 1, max= 17, avg= 6.87, stdev= 3.90, samples=102 lat (msec) : 10=0.26%, 20=6.64%, 50=40.10%, 100=34.64%, 250=17.58% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=2.04%, ctx=1262, 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=179575: Mon Aug 17 04:14:43 2026 read: IOPS=6, BW=110KiB/s (113kB/s)(5744KiB/52100msec) clat (msec): min=7, max=245, avg=53.42, stdev=44.21 lat (msec): min=7, max=245, avg=53.43, stdev=44.21 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 54], 80.00th=[ 69], 90.00th=[ 116], 95.00th=[ 163], | 99.00th=[ 220], 99.50th=[ 245], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 21, max= 383, per=24.69%, avg=113.34, stdev=72.83, samples=98 iops : min= 1, max= 23, avg= 6.32, stdev= 4.55, samples=98 write: IOPS=7, BW=126KiB/s (129kB/s)(6544KiB/52100msec); 0 zone resets clat (msec): min=18, max=359, avg=79.52, stdev=52.12 lat (msec): min=18, max=360, avg=79.53, stdev=52.13 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 27], 10.00th=[ 33], 20.00th=[ 41], | 30.00th=[ 47], 40.00th=[ 56], 50.00th=[ 67], 60.00th=[ 75], | 70.00th=[ 90], 80.00th=[ 114], 90.00th=[ 140], 95.00th=[ 178], | 99.00th=[ 275], 99.50th=[ 292], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 320, per=25.88%, avg=125.00, stdev=65.71, samples=101 iops : min= 1, max= 20, avg= 7.04, stdev= 4.16, samples=101 lat (msec) : 10=0.52%, 20=5.73%, 50=42.71%, 100=32.03%, 250=18.10% lat (msec) : 500=0.91% cpu : usr=0.06%, sys=2.14%, ctx=1360, 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=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=179576: Mon Aug 17 04:14:43 2026 read: IOPS=7, BW=121KiB/s (124kB/s)(6256KiB/51717msec) clat (msec): min=9, max=337, avg=55.98, stdev=46.94 lat (msec): min=9, max=337, avg=55.98, stdev=46.94 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 41], 60.00th=[ 49], | 70.00th=[ 59], 80.00th=[ 75], 90.00th=[ 113], 95.00th=[ 165], | 99.00th=[ 245], 99.50th=[ 292], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 31, max= 351, per=26.99%, avg=123.88, stdev=77.79, samples=99 iops : min= 1, max= 21, avg= 6.97, stdev= 4.90, samples=99 write: IOPS=7, BW=117KiB/s (119kB/s)(6032KiB/51717msec); 0 zone resets clat (msec): min=14, max=329, avg=78.90, stdev=48.40 lat (msec): min=14, max=329, avg=78.90, stdev=48.40 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 28], 10.00th=[ 32], 20.00th=[ 41], | 30.00th=[ 47], 40.00th=[ 55], 50.00th=[ 66], 60.00th=[ 79], | 70.00th=[ 93], 80.00th=[ 112], 90.00th=[ 144], 95.00th=[ 174], | 99.00th=[ 264], 99.50th=[ 284], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 30, max= 349, per=24.11%, avg=116.46, stdev=65.68, samples=100 iops : min= 1, max= 21, avg= 6.50, stdev= 4.14, samples=100 lat (msec) : 10=0.13%, 20=6.77%, 50=41.54%, 100=32.55%, 250=18.10% lat (msec) : 500=0.91% cpu : usr=0.04%, sys=2.01%, ctx=1246, 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=179577: Mon Aug 17 04:14:43 2026 read: IOPS=7, BW=116KiB/s (119kB/s)(6032KiB/51902msec) clat (msec): min=10, max=233, avg=54.66, stdev=42.65 lat (msec): min=10, max=233, avg=54.66, stdev=42.66 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 47], | 70.00th=[ 57], 80.00th=[ 83], 90.00th=[ 126], 95.00th=[ 153], | 99.00th=[ 203], 99.50th=[ 209], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 31, max= 314, per=26.20%, avg=120.27, stdev=64.23, samples=98 iops : min= 1, max= 19, avg= 6.74, stdev= 4.11, samples=98 write: IOPS=7, BW=121KiB/s (123kB/s)(6256KiB/51902msec); 0 zone resets clat (msec): min=16, max=357, avg=79.14, stdev=51.42 lat (msec): min=16, max=357, avg=79.16, stdev=51.42 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 28], 10.00th=[ 33], 20.00th=[ 42], | 30.00th=[ 48], 40.00th=[ 56], 50.00th=[ 64], 60.00th=[ 77], | 70.00th=[ 87], 80.00th=[ 113], 90.00th=[ 142], 95.00th=[ 174], | 99.00th=[ 279], 99.50th=[ 326], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 30, max= 349, per=25.38%, avg=122.57, stdev=68.70, samples=100 iops : min= 1, max= 21, avg= 6.89, stdev= 4.31, samples=100 lat (msec) : 20=5.73%, 50=43.88%, 100=31.38%, 250=18.10%, 500=0.91% cpu : usr=0.04%, sys=2.17%, ctx=1342, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=460KiB/s (471kB/s), 110KiB/s-121KiB/s (113kB/s-124kB/s), io=23.4MiB (24.5MB), run=51717-52100msec WRITE: bw=484KiB/s (495kB/s), 117KiB/s-126KiB/s (119kB/s-129kB/s), io=24.6MiB (25.8MB), run=51717-52100msec 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=179591: Mon Aug 17 04:15:00 2026 read: IOPS=1, BW=1111KiB/s (1138kB/s)(7168KiB/6452msec) clat (msec): min=86, max=244, avg=158.13, stdev=53.28 lat (msec): min=86, max=244, avg=158.14, stdev=53.28 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 109], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 153], 60.00th=[ 169], | 70.00th=[ 169], 80.00th=[ 201], 90.00th=[ 245], 95.00th=[ 245], | 99.00th=[ 245], 99.50th=[ 245], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 2043, max= 4196, per=100.00%, avg=3442.00, stdev=1212.79, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=0, BW=794KiB/s (813kB/s)(5120KiB/6452msec); 0 zone resets clat (msec): min=154, max=3112, avg=1042.68, stdev=1180.02 lat (msec): min=154, max=3112, avg=1042.76, stdev=1180.01 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 558], 40.00th=[ 558], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 3104], 95.00th=[ 3104], | 99.00th=[ 3104], 99.50th=[ 3104], 99.90th=[ 3104], 99.95th=[ 3104], | 99.99th=[ 3104] bw ( KiB/s): min= 1924, max= 4087, per=59.32%, avg=2512.25, stdev=1050.79, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.06%, ctx=62, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179592: Mon Aug 17 04:15:00 2026 read: IOPS=0, BW=303KiB/s (310kB/s)(2048KiB/6769msec) clat (msec): min=140, max=245, avg=193.13, stdev=74.47 lat (msec): min=140, max=245, avg=193.13, stdev=74.47 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 247], | 70.00th=[ 247], 80.00th=[ 247], 90.00th=[ 247], 95.00th=[ 247], | 99.00th=[ 247], 99.50th=[ 247], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 1381, max= 2015, per=56.13%, avg=1698.00, stdev=448.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1513KiB/s (1549kB/s)(10.0MiB/6769msec); 0 zone resets clat (msec): min=130, max=2894, avg=624.81, stdev=837.47 lat (msec): min=130, max=2894, avg=624.89, stdev=837.47 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 131], | 30.00th=[ 188], 40.00th=[ 203], 50.00th=[ 271], 60.00th=[ 355], | 70.00th=[ 468], 80.00th=[ 709], 90.00th=[ 894], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 1381, max= 4047, per=60.86%, avg=2577.50, stdev=1158.14, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=4.34%, ctx=137, 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=179593: Mon Aug 17 04:15:00 2026 read: IOPS=0, BW=958KiB/s (981kB/s)(6144KiB/6416msec) clat (msec): min=98, max=766, avg=320.21, stdev=259.21 lat (msec): min=98, max=766, avg=320.21, stdev=259.21 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 228], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 2023, max= 3849, per=82.26%, avg=2488.50, stdev=907.04, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=958KiB/s (981kB/s)(6144KiB/6416msec); 0 zone resets clat (msec): min=149, max=2558, avg=720.29, stdev=913.51 lat (msec): min=149, max=2558, avg=720.49, stdev=913.47 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 493], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 2567], 95.00th=[ 2567], | 99.00th=[ 2567], 99.50th=[ 2567], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 1430, max= 2043, per=45.53%, avg=1928.17, stdev=244.31, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=4.27%, ctx=150, 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=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=179594: Mon Aug 17 04:15:00 2026 read: IOPS=0, BW=930KiB/s (952kB/s)(5120KiB/5505msec) clat (msec): min=111, max=718, avg=280.85, stdev=254.96 lat (msec): min=111, max=718, avg=280.85, stdev=254.96 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 112], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 148], 60.00th=[ 148], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 3849, max= 4079, per=100.00%, avg=3964.00, stdev=162.63, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1302KiB/s (1333kB/s)(7168KiB/5505msec); 0 zone resets clat (msec): min=116, max=2866, avg=580.67, stdev=1012.18 lat (msec): min=116, max=2866, avg=580.76, stdev=1012.19 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 117], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 205], 60.00th=[ 209], | 70.00th=[ 209], 80.00th=[ 393], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 2771, max= 4079, per=85.77%, avg=3632.33, stdev=746.11, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 lat (msec) : 250=66.67%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=2.40%, ctx=56, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3026KiB/s (3098kB/s), 303KiB/s-1111KiB/s (310kB/s-1138kB/s), io=20.0MiB (20.0MB), run=5505-6769msec WRITE: bw=4236KiB/s (4337kB/s), 794KiB/s-1513KiB/s (813kB/s-1549kB/s), io=28.0MiB (29.4MB), run=5505-6769msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179595: Mon Aug 17 04:15:01 2026 read: IOPS=0, BW=1021KiB/s (1045kB/s)(7168KiB/7022msec) clat (usec): min=743, max=703506, avg=246365.39, stdev=217846.64 lat (usec): min=744, max=703507, avg=246366.67, stdev=217846.67 clat percentiles (usec): | 1.00th=[ 742], 5.00th=[ 742], 10.00th=[ 742], 20.00th=[166724], | 30.00th=[191890], 40.00th=[191890], 50.00th=[193987], 60.00th=[193987], | 70.00th=[193987], 80.00th=[274727], 90.00th=[700449], 95.00th=[700449], | 99.00th=[700449], 99.50th=[700449], 99.90th=[700449], 99.95th=[700449], | 99.99th=[700449] bw ( KiB/s): min= 2031, max= 5965, per=100.00%, avg=4030.67, stdev=1967.81, samples=3 iops : min= 1, max= 5, avg= 3.33, stdev= 2.08, samples=3 write: IOPS=0, BW=729KiB/s (747kB/s)(5120KiB/7022msec); 0 zone resets clat (msec): min=151, max=2684, avg=959.30, stdev=1047.86 lat (msec): min=151, max=2684, avg=959.37, stdev=1047.88 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 2702], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 2023, max= 2035, per=49.72%, avg=2030.00, stdev= 5.03, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=8.33%, 750=16.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.25%, ctx=215, 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=179596: Mon Aug 17 04:15:01 2026 read: IOPS=0, BW=298KiB/s (305kB/s)(2048KiB/6879msec) clat (msec): min=234, max=2694, avg=1464.31, stdev=1739.57 lat (msec): min=234, max=2694, avg=1464.31, stdev=1739.57 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 234], 60.00th=[ 2702], | 70.00th=[ 2702], 80.00th=[ 2702], 90.00th=[ 2702], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 2015, max= 2035, per=69.44%, avg=2025.00, stdev=14.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1489KiB/s (1524kB/s)(10.0MiB/6879msec); 0 zone resets clat (msec): min=118, max=805, avg=364.50, stdev=231.25 lat (msec): min=118, max=805, avg=364.59, stdev=231.24 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 182], | 30.00th=[ 184], 40.00th=[ 207], 50.00th=[ 232], 60.00th=[ 355], | 70.00th=[ 380], 80.00th=[ 502], 90.00th=[ 676], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 2015, max= 4071, per=74.54%, avg=3043.67, stdev=1113.75, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=50.00%, 500=16.67%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=10.70%, ctx=481, 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=179597: Mon Aug 17 04:15:01 2026 read: IOPS=1, BW=1495KiB/s (1531kB/s)(6144KiB/4109msec) clat (usec): min=525, max=1487.8k, avg=320026.27, stdev=576629.68 lat (usec): min=536, max=1487.8k, avg=320029.39, stdev=576628.66 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], | 20.00th=[ 693], 30.00th=[ 693], 40.00th=[ 125305], | 50.00th=[ 125305], 60.00th=[ 131597], 70.00th=[ 173016], | 80.00th=[ 173016], 90.00th=[1484784], 95.00th=[1484784], | 99.00th=[1484784], 99.50th=[1484784], 99.90th=[1484784], | 99.95th=[1484784], 99.99th=[1484784] bw ( KiB/s): min= 4087, max= 4096, per=100.00%, avg=4091.50, stdev= 6.36, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1495KiB/s (1531kB/s)(6144KiB/4109msec); 0 zone resets clat (msec): min=189, max=648, avg=350.02, stdev=172.31 lat (msec): min=189, max=648, avg=350.08, stdev=172.31 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 342], | 70.00th=[ 435], 80.00th=[ 435], 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= 1448, max= 2048, per=46.09%, avg=1881.75, stdev=290.44, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=16.67% lat (msec) : 250=41.67%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=11.70%, ctx=158, 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=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=179598: Mon Aug 17 04:15:01 2026 read: IOPS=0, BW=763KiB/s (782kB/s)(5120KiB/6707msec) clat (usec): min=449, max=236080, avg=98733.32, stdev=101520.81 lat (usec): min=450, max=236081, avg=98734.43, stdev=101520.88 clat percentiles (usec): | 1.00th=[ 449], 5.00th=[ 449], 10.00th=[ 449], 20.00th=[ 449], | 30.00th=[ 36439], 40.00th=[ 36439], 50.00th=[ 44827], 60.00th=[ 44827], | 70.00th=[175113], 80.00th=[175113], 90.00th=[235930], 95.00th=[235930], | 99.00th=[235930], 99.50th=[235930], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1069KiB/s (1094kB/s)(7168KiB/6707msec); 0 zone resets clat (msec): min=182, max=3483, avg=839.86, stdev=1184.90 lat (msec): min=182, max=3484, avg=839.99, stdev=1184.90 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 190], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 447], 60.00th=[ 527], | 70.00th=[ 527], 80.00th=[ 776], 90.00th=[ 3473], 95.00th=[ 3473], | 99.00th=[ 3473], 99.50th=[ 3473], 99.90th=[ 3473], 99.95th=[ 3473], | 99.99th=[ 3473] bw ( KiB/s): min= 2023, max= 4063, per=62.26%, avg=2542.25, stdev=1013.88, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 500=8.33% lat (msec) : 50=16.67%, 250=33.33%, 500=16.67%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.04%, sys=7.58%, ctx=192, 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=2917KiB/s (2987kB/s), 298KiB/s-1495KiB/s (305kB/s-1531kB/s), io=20.0MiB (20.0MB), run=4109-7022msec WRITE: bw=4083KiB/s (4181kB/s), 729KiB/s-1495KiB/s (747kB/s-1531kB/s), io=28.0MiB (29.4MB), run=4109-7022msec 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=179606: Mon Aug 17 04:15:16 2026 read: IOPS=0, BW=4037KiB/s (4134kB/s)(12.0MiB/3044msec) clat (msec): min=830, max=992, avg=923.61, stdev=83.50 lat (msec): min=830, max=992, avg=923.61, stdev=83.50 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 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= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=12.09%, ctx=279, 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=179607: Mon Aug 17 04:15:16 2026 read: IOPS=0, BW=1497KiB/s (1532kB/s)(4096KiB/2737msec) clat (nsec): min=953048k, max=953048k, avg=953047802.00, stdev= 0.00 lat (nsec): min=953049k, max=953049k, avg=953049417.00, stdev= 0.00 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=[ 953], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2993KiB/s (3065kB/s)(8192KiB/2737msec); 0 zone resets clat (msec): min=666, max=814, avg=740.11, stdev=104.56 lat (msec): min=667, max=814, avg=740.69, stdev=104.17 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 818], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 8143, max= 8143, per=89.09%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=6.51%, ctx=123, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179608: Mon Aug 17 04:15:16 2026 write: IOPS=0, BW=3428KiB/s (3510kB/s)(12.0MiB/3585msec); 0 zone resets clat (msec): min=386, max=1811, avg=1119.12, stdev=713.04 lat (msec): min=387, max=1817, avg=1121.28, stdev=715.60 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8126, max= 8192, per=89.27%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.96%, ctx=71, 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=179609: Mon Aug 17 04:15:16 2026 write: IOPS=1, BW=4177KiB/s (4277kB/s)(12.0MiB/2942msec); 0 zone resets clat (msec): min=247, max=2159, avg=934.78, stdev=1063.18 lat (msec): min=249, max=2161, avg=936.40, stdev=1063.64 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 6077, max= 8126, per=77.70%, avg=7101.50, stdev=1448.86, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.54%, ctx=47, 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=5382KiB/s (5512kB/s), 1497KiB/s-4037KiB/s (1532kB/s-4134kB/s), io=16.0MiB (16.8MB), run=2737-3044msec WRITE: bw=9140KiB/s (9360kB/s), 2993KiB/s-4177KiB/s (3065kB/s-4277kB/s), io=32.0MiB (33.6MB), run=2737-3585msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179610: Mon Aug 17 04:15:16 2026 read: IOPS=0, BW=3479KiB/s (3563kB/s)(12.0MiB/3532msec) clat (msec): min=325, max=2064, avg=1159.00, stdev=871.56 lat (msec): min=325, max=2064, avg=1159.00, stdev=871.56 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 2072], 80.00th=[ 2072], 90.00th=[ 2072], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 7787, max= 7787, per=100.00%, avg=7787.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.52%, ctx=36, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179611: Mon Aug 17 04:15:16 2026 read: IOPS=0, BW=1219KiB/s (1249kB/s)(4096KiB/3359msec) clat (nsec): min=2295.4M, max=2295.4M, avg=2295420722.00, stdev= 0.00 lat (nsec): min=2295.4M, max=2295.4M, avg=2295423774.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2299], 5.00th=[ 2299], 10.00th=[ 2299], 20.00th=[ 2299], | 30.00th=[ 2299], 40.00th=[ 2299], 50.00th=[ 2299], 60.00th=[ 2299], | 70.00th=[ 2299], 80.00th=[ 2299], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7787, max= 7787, per=100.00%, avg=7787.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2439KiB/s (2497kB/s)(8192KiB/3359msec); 0 zone resets clat (msec): min=285, max=737, avg=511.35, stdev=319.14 lat (msec): min=285, max=737, avg=511.66, stdev=319.15 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.81%, ctx=45, 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=179612: Mon Aug 17 04:15:16 2026 write: IOPS=0, BW=3850KiB/s (3942kB/s)(12.0MiB/3192msec); 0 zone resets clat (msec): min=825, max=1231, avg=1003.73, stdev=207.18 lat (msec): min=826, max=1231, avg=1004.14, stdev=206.97 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 1234], 80.00th=[ 1234], 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= 8143, max= 8159, per=83.56%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=8.15%, ctx=97, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179613: Mon Aug 17 04:15:16 2026 write: IOPS=0, BW=4076KiB/s (4173kB/s)(12.0MiB/3015msec); 0 zone resets clat (msec): min=185, max=2174, avg=986.83, stdev=1049.13 lat (msec): min=189, max=2176, avg=989.30, stdev=1048.49 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min=16157, max=16157, per=100.00%, avg=16157.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.52%, ctx=31, 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=4639KiB/s (4750kB/s), 1219KiB/s-3479KiB/s (1249kB/s-3563kB/s), io=16.0MiB (16.8MB), run=3359-3532msec WRITE: bw=9755KiB/s (9989kB/s), 2439KiB/s-4076KiB/s (2497kB/s-4173kB/s), io=32.0MiB (33.6MB), run=3015-3359msec