== sanity test 398b: DIO and buffer IO race ============== 11:20:18 (1786807218) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.62635 s, 10.9 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=179346: Sat Aug 15 11:22:50 2026 read: IOPS=11, BW=44.5KiB/s (45.6kB/s)(5992KiB/134642msec) clat (usec): min=49, max=432745, avg=49992.93, stdev=33797.18 lat (usec): min=50, max=432746, avg=49997.43, stdev=33795.56 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 14746], 10.00th=[ 18744], 20.00th=[ 25035], | 30.00th=[ 30278], 40.00th=[ 35390], 50.00th=[ 42730], 60.00th=[ 50070], | 70.00th=[ 58459], 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[112722], | 99.00th=[162530], 99.50th=[193987], 99.90th=[244319], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 7, max= 104, per=25.00%, avg=44.00, stdev=18.28, samples=264 iops : min= 1, max= 26, avg=10.34, stdev= 4.62, samples=264 write: IOPS=11, BW=46.8KiB/s (47.9kB/s)(6296KiB/134642msec); 0 zone resets clat (usec): min=1067, max=334112, avg=37853.01, stdev=40129.40 lat (usec): min=1069, max=334114, avg=37855.12, stdev=40129.67 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1696], 10.00th=[ 2671], 20.00th=[ 5145], | 30.00th=[ 10028], 40.00th=[ 17695], 50.00th=[ 25822], 60.00th=[ 34341], | 70.00th=[ 46400], 80.00th=[ 64226], 90.00th=[ 90702], 95.00th=[116917], | 99.00th=[168821], 99.50th=[208667], 99.90th=[299893], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 7, max= 144, per=25.18%, avg=46.34, stdev=22.73, samples=264 iops : min= 1, max= 36, avg=10.94, stdev= 5.73, samples=264 lat (usec) : 50=0.07%, 100=0.98%, 250=0.13%, 500=0.07% lat (msec) : 2=3.42%, 4=4.59%, 10=7.65%, 20=11.07%, 50=38.28% lat (msec) : 100=25.85%, 250=7.71%, 500=0.20% cpu : usr=0.08%, sys=5.43%, ctx=6981, 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=179347: Sat Aug 15 11:22:50 2026 read: IOPS=10, BW=43.9KiB/s (44.9kB/s)(5940KiB/135391msec) clat (usec): min=44, max=488554, avg=50861.18, stdev=36766.01 lat (usec): min=44, max=488555, avg=50863.18, stdev=36765.98 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 13435], 10.00th=[ 17957], 20.00th=[ 24249], | 30.00th=[ 30016], 40.00th=[ 35914], 50.00th=[ 42730], 60.00th=[ 50594], | 70.00th=[ 58983], 80.00th=[ 70779], 90.00th=[ 93848], 95.00th=[114820], | 99.00th=[185598], 99.50th=[219153], 99.90th=[263193], 99.95th=[488637], | 99.99th=[488637] bw ( KiB/s): min= 6, max= 88, per=24.65%, avg=43.39, stdev=18.93, samples=266 iops : min= 1, max= 22, avg=10.19, stdev= 4.76, samples=266 write: IOPS=11, BW=46.9KiB/s (48.0kB/s)(6348KiB/135391msec); 0 zone resets clat (usec): min=1042, max=545076, avg=37580.96, stdev=42381.52 lat (usec): min=1045, max=545078, avg=37590.34, stdev=42378.20 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1663], 10.00th=[ 2507], 20.00th=[ 5014], | 30.00th=[ 8848], 40.00th=[ 15533], 50.00th=[ 25297], 60.00th=[ 34341], | 70.00th=[ 45351], 80.00th=[ 62653], 90.00th=[ 89654], 95.00th=[119014], | 99.00th=[187696], 99.50th=[210764], 99.90th=[320865], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 7, max= 127, per=25.17%, avg=46.32, stdev=24.88, samples=266 iops : min= 1, max= 31, avg=10.93, stdev= 6.28, samples=266 lat (usec) : 50=0.03%, 100=1.17%, 250=0.13%, 500=0.10%, 750=0.03% lat (msec) : 2=3.52%, 4=4.75%, 10=8.56%, 20=11.00%, 50=37.24% lat (msec) : 100=25.23%, 250=7.98%, 500=0.23%, 750=0.03% cpu : usr=0.08%, sys=5.39%, ctx=6925, 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=179348: Sat Aug 15 11:22:50 2026 read: IOPS=11, BW=44.8KiB/s (45.9kB/s)(6028KiB/134490msec) clat (usec): min=34, max=382454, avg=49054.68, stdev=35188.42 lat (usec): min=34, max=382454, avg=49068.56, stdev=35181.96 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 13173], 10.00th=[ 18220], 20.00th=[ 23987], | 30.00th=[ 29754], 40.00th=[ 35390], 50.00th=[ 41157], 60.00th=[ 48497], | 70.00th=[ 56886], 80.00th=[ 67634], 90.00th=[ 90702], 95.00th=[115868], | 99.00th=[173016], 99.50th=[227541], 99.90th=[291505], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 7, max= 119, per=25.35%, avg=44.61, stdev=20.50, samples=263 iops : min= 1, max= 29, avg=10.50, stdev= 5.15, samples=263 write: IOPS=11, BW=46.5KiB/s (47.7kB/s)(6260KiB/134490msec); 0 zone resets clat (usec): min=1057, max=510183, avg=38571.64, stdev=42541.20 lat (usec): min=1059, max=510186, avg=38573.82, stdev=42540.92 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1680], 10.00th=[ 2474], 20.00th=[ 5145], | 30.00th=[ 9503], 40.00th=[ 17433], 50.00th=[ 26608], 60.00th=[ 35914], | 70.00th=[ 49021], 80.00th=[ 63701], 90.00th=[ 89654], 95.00th=[116917], | 99.00th=[198181], 99.50th=[229639], 99.90th=[358613], 99.95th=[509608], | 99.99th=[509608] bw ( KiB/s): min= 7, max= 127, per=25.06%, avg=46.11, stdev=22.00, samples=264 iops : min= 1, max= 31, avg=10.88, stdev= 5.54, samples=264 lat (usec) : 50=0.16%, 100=1.50%, 250=0.07%, 500=0.13%, 1000=0.03% lat (msec) : 2=3.78%, 4=4.52%, 10=7.81%, 20=10.16%, 50=38.44% lat (msec) : 100=26.17%, 250=6.93%, 500=0.26%, 750=0.03% cpu : usr=0.07%, sys=5.37%, ctx=7049, 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=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=179349: Sat Aug 15 11:22:50 2026 read: IOPS=11, BW=44.4KiB/s (45.4kB/s)(6052KiB/136430msec) clat (usec): min=36, max=374880, avg=49784.94, stdev=36636.92 lat (usec): min=36, max=374881, avg=49786.82, stdev=36636.83 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 12780], 10.00th=[ 18220], 20.00th=[ 24511], | 30.00th=[ 28967], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 47973], | 70.00th=[ 57410], 80.00th=[ 69731], 90.00th=[ 89654], 95.00th=[115868], | 99.00th=[191890], 99.50th=[204473], 99.90th=[375391], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 7, max= 112, per=25.18%, avg=44.32, stdev=20.08, samples=266 iops : min= 1, max= 28, avg=10.42, stdev= 5.06, samples=266 write: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6236KiB/136430msec); 0 zone resets clat (usec): min=1148, max=566520, avg=39039.10, stdev=43826.24 lat (usec): min=1150, max=566522, avg=39044.39, stdev=43827.68 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1663], 10.00th=[ 2638], 20.00th=[ 5014], | 30.00th=[ 9503], 40.00th=[ 17433], 50.00th=[ 25822], 60.00th=[ 35390], | 70.00th=[ 47973], 80.00th=[ 65274], 90.00th=[ 93848], 95.00th=[120062], | 99.00th=[185598], 99.50th=[242222], 99.90th=[337642], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 6, max= 120, per=24.75%, avg=45.53, stdev=23.40, samples=266 iops : min= 1, max= 30, avg=10.73, stdev= 5.89, samples=266 lat (usec) : 50=0.07%, 100=1.33%, 250=0.16%, 500=0.07%, 750=0.03% lat (msec) : 2=3.55%, 4=4.65%, 10=7.78%, 20=10.25%, 50=38.70% lat (msec) : 100=25.42%, 250=7.65%, 500=0.29%, 750=0.03% cpu : usr=0.08%, sys=5.31%, ctx=7089, 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=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=176KiB/s (180kB/s), 43.9KiB/s-44.8KiB/s (44.9kB/s-45.9kB/s), io=23.4MiB (24.6MB), run=134490-136430msec WRITE: bw=184KiB/s (189kB/s), 45.7KiB/s-46.9KiB/s (46.8kB/s-48.0kB/s), io=24.6MiB (25.7MB), run=134490-136430msec fio: pid=179341, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=179341: Sat Aug 15 11:23:23 2026 read: IOPS=7, BW=31.6KiB/s (32.3kB/s)(4920KiB/155740msec) clat (msec): min=6, max=567, avg=51.04, stdev=52.92 lat (msec): min=6, max=567, avg=51.04, stdev=52.92 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 42], | 70.00th=[ 55], 80.00th=[ 75], 90.00th=[ 115], 95.00th=[ 148], | 99.00th=[ 247], 99.50th=[ 284], 99.90th=[ 550], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 7, max= 143, per=24.64%, avg=33.26, stdev=25.20, samples=287 iops : min= 1, max= 35, avg= 7.65, stdev= 6.37, samples=287 write: IOPS=8, BW=32.7KiB/s (33.5kB/s)(5088KiB/155740msec); 0 zone resets clat (msec): min=11, max=360, avg=72.76, stdev=54.50 lat (msec): min=11, max=360, avg=72.76, stdev=54.50 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 38], 40.00th=[ 45], 50.00th=[ 56], 60.00th=[ 69], | 70.00th=[ 86], 80.00th=[ 109], 90.00th=[ 142], 95.00th=[ 176], | 99.00th=[ 279], 99.50th=[ 321], 99.90th=[ 347], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 135, per=23.46%, avg=33.08, stdev=22.76, samples=298 iops : min= 1, max= 33, avg= 7.60, stdev= 5.73, samples=298 lat (msec) : 10=1.64%, 20=14.70%, 50=39.59%, 100=25.49%, 250=17.18% lat (msec) : 500=1.28%, 750=0.08% cpu : usr=0.05%, sys=2.07%, ctx=3939, majf=0, minf=19 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=1231,1272,0,0 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=179342: Sat Aug 15 11:23:23 2026 read: IOPS=8, BW=35.1KiB/s (35.9kB/s)(5940KiB/169462msec) clat (msec): min=5, max=608, avg=43.83, stdev=46.33 lat (msec): min=5, max=608, avg=43.84, stdev=46.33 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 34], | 70.00th=[ 46], 80.00th=[ 64], 90.00th=[ 101], 95.00th=[ 140], | 99.00th=[ 201], 99.50th=[ 255], 99.90th=[ 347], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 7, max= 127, per=27.21%, avg=36.74, stdev=28.52, samples=314 iops : min= 1, max= 31, avg= 8.53, stdev= 7.18, samples=314 write: IOPS=9, BW=37.5KiB/s (38.4kB/s)(6348KiB/169462msec); 0 zone resets clat (msec): min=10, max=534, avg=65.52, stdev=53.78 lat (msec): min=10, max=534, avg=65.52, stdev=53.78 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 45], 60.00th=[ 59], | 70.00th=[ 80], 80.00th=[ 101], 90.00th=[ 136], 95.00th=[ 169], | 99.00th=[ 264], 99.50th=[ 300], 99.90th=[ 351], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 7, max= 135, per=26.35%, avg=37.15, stdev=28.07, samples=331 iops : min= 1, max= 33, avg= 8.63, stdev= 7.08, samples=331 lat (msec) : 10=3.22%, 20=19.08%, 50=40.95%, 100=21.35%, 250=14.45% lat (msec) : 500=0.88%, 750=0.07% cpu : usr=0.06%, sys=2.23%, ctx=5138, 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=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=179343: Sat Aug 15 11:23:23 2026 read: IOPS=8, BW=35.7KiB/s (36.6kB/s)(6028KiB/168834msec) clat (msec): min=6, max=382, avg=44.61, stdev=44.64 lat (msec): min=6, max=382, avg=44.61, stdev=44.64 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 28], 60.00th=[ 36], | 70.00th=[ 50], 80.00th=[ 69], 90.00th=[ 101], 95.00th=[ 133], | 99.00th=[ 230], 99.50th=[ 259], 99.90th=[ 300], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 168, per=26.94%, avg=36.37, stdev=28.17, samples=322 iops : min= 1, max= 42, avg= 8.43, stdev= 7.10, samples=322 write: IOPS=9, BW=37.1KiB/s (37.0kB/s)(6260KiB/168834msec); 0 zone resets clat (msec): min=10, max=615, avg=64.66, stdev=54.63 lat (msec): min=10, max=615, avg=64.67, stdev=54.63 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 45], 60.00th=[ 57], | 70.00th=[ 77], 80.00th=[ 96], 90.00th=[ 133], 95.00th=[ 167], | 99.00th=[ 271], 99.50th=[ 313], 99.90th=[ 401], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 7, max= 136, per=26.45%, avg=37.30, stdev=28.03, samples=326 iops : min= 1, max= 34, avg= 8.67, stdev= 7.06, samples=326 lat (msec) : 10=3.06%, 20=18.33%, 50=41.21%, 100=22.79%, 250=13.57% lat (msec) : 500=1.01%, 750=0.03% cpu : usr=0.06%, sys=2.32%, ctx=5224, 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=179344: Sat Aug 15 11:23:23 2026 read: IOPS=8, BW=35.7KiB/s (36.6kB/s)(6052KiB/169316msec) clat (msec): min=5, max=570, avg=45.98, stdev=49.37 lat (msec): min=5, max=570, avg=45.98, stdev=49.37 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 48], 80.00th=[ 71], 90.00th=[ 109], 95.00th=[ 142], | 99.00th=[ 245], 99.50th=[ 288], 99.90th=[ 376], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 7, max= 143, per=27.85%, avg=37.59, stdev=28.64, samples=313 iops : min= 1, max= 35, avg= 8.74, stdev= 7.23, samples=313 write: IOPS=9, BW=36.8KiB/s (37.7kB/s)(6236KiB/169316msec); 0 zone resets clat (msec): min=11, max=630, avg=63.73, stdev=53.21 lat (msec): min=11, max=630, avg=63.73, stdev=53.21 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 44], 60.00th=[ 55], | 70.00th=[ 73], 80.00th=[ 99], 90.00th=[ 133], 95.00th=[ 165], | 99.00th=[ 257], 99.50th=[ 292], 99.90th=[ 393], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 136, per=26.45%, avg=37.30, stdev=27.82, samples=325 iops : min= 1, max= 34, avg= 8.67, stdev= 7.01, samples=325 lat (msec) : 10=3.09%, 20=18.95%, 50=41.89%, 100=20.54%, 250=14.45% lat (msec) : 500=1.01%, 750=0.07% cpu : usr=0.05%, sys=2.24%, ctx=5165, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=135KiB/s (139kB/s), 31.6KiB/s-35.7KiB/s (32.3kB/s-36.6kB/s), io=22.4MiB (23.5MB), run=155740-169462msec WRITE: bw=141KiB/s (145kB/s), 32.7KiB/s-37.5KiB/s (33.5kB/s-38.4kB/s), io=23.4MiB (24.5MB), run=155740-169462msec 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=179393: Sat Aug 15 11:24:00 2026 read: IOPS=13, BW=219KiB/s (224kB/s)(5920KiB/27006msec) clat (usec): min=50, max=160895, avg=38765.01, stdev=25982.05 lat (usec): min=50, max=160896, avg=38766.41, stdev=25982.01 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 101], 10.00th=[ 14484], 20.00th=[ 21365], | 30.00th=[ 25560], 40.00th=[ 30278], 50.00th=[ 34341], 60.00th=[ 40109], | 70.00th=[ 45351], 80.00th=[ 54264], 90.00th=[ 70779], 95.00th=[ 80217], | 99.00th=[139461], 99.50th=[160433], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 94, max= 411, per=24.75%, avg=219.30, stdev=70.34, samples=53 iops : min= 5, max= 25, avg=12.98, stdev= 4.49, samples=53 write: IOPS=14, BW=236KiB/s (241kB/s)(6368KiB/27006msec); 0 zone resets clat (usec): min=1877, max=163114, avg=31586.77, stdev=27015.93 lat (usec): min=1880, max=163117, avg=31589.39, stdev=27016.19 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 13], 40.00th=[ 19], 50.00th=[ 25], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 52], 90.00th=[ 71], 95.00th=[ 84], | 99.00th=[ 120], 99.50th=[ 131], 99.90th=[ 163], 99.95th=[ 163], | 99.99th=[ 163] bw ( KiB/s): min= 63, max= 480, per=25.82%, avg=240.90, stdev=78.02, samples=52 iops : min= 3, max= 30, avg=14.33, stdev= 5.00, samples=52 lat (usec) : 100=2.34%, 250=1.95%, 500=0.13%, 750=0.13% lat (msec) : 2=0.39%, 4=4.30%, 10=9.51%, 20=11.85%, 50=46.61% lat (msec) : 100=20.18%, 250=2.60% cpu : usr=0.09%, sys=9.25%, ctx=2039, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179394: Sat Aug 15 11:24:00 2026 read: IOPS=13, BW=218KiB/s (224kB/s)(5744KiB/26313msec) clat (usec): min=42, max=177549, avg=38870.42, stdev=24314.74 lat (usec): min=42, max=177549, avg=38872.31, stdev=24314.60 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 95], 10.00th=[ 13829], 20.00th=[ 20055], | 30.00th=[ 25297], 40.00th=[ 30540], 50.00th=[ 35390], 60.00th=[ 40633], | 70.00th=[ 47449], 80.00th=[ 56886], 90.00th=[ 69731], 95.00th=[ 82314], | 99.00th=[112722], 99.50th=[126354], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 57, max= 320, per=24.58%, avg=217.81, stdev=67.74, samples=52 iops : min= 3, max= 20, avg=12.88, stdev= 4.28, samples=52 write: IOPS=15, BW=249KiB/s (255kB/s)(6544KiB/26313msec); 0 zone resets clat (usec): min=1662, max=141985, avg=29723.54, stdev=25852.69 lat (usec): min=1663, max=141986, avg=29726.07, stdev=25852.65 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 7], | 30.00th=[ 11], 40.00th=[ 17], 50.00th=[ 23], 60.00th=[ 30], | 70.00th=[ 39], 80.00th=[ 49], 90.00th=[ 67], 95.00th=[ 84], | 99.00th=[ 107], 99.50th=[ 114], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 63, max= 476, per=26.59%, avg=248.10, stdev=86.00, samples=52 iops : min= 3, max= 29, avg=14.79, stdev= 5.44, samples=52 lat (usec) : 50=0.26%, 100=2.08%, 250=1.56%, 500=0.26% lat (msec) : 2=0.52%, 4=3.78%, 10=11.20%, 20=14.06%, 50=43.49% lat (msec) : 100=20.96%, 250=1.82% cpu : usr=0.10%, sys=9.11%, ctx=2002, 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=179395: Sat Aug 15 11:24:00 2026 read: IOPS=14, BW=239KiB/s (245kB/s)(6256KiB/26173msec) clat (usec): min=39, max=108083, avg=36520.59, stdev=22250.60 lat (usec): min=40, max=108084, avg=36521.95, stdev=22250.56 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 77], 10.00th=[ 7898], 20.00th=[ 19792], | 30.00th=[ 24511], 40.00th=[ 28705], 50.00th=[ 34341], 60.00th=[ 39060], | 70.00th=[ 45351], 80.00th=[ 55313], 90.00th=[ 65799], 95.00th=[ 78119], | 99.00th=[ 99091], 99.50th=[105382], 99.90th=[108528], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 95, max= 383, per=26.87%, avg=238.08, stdev=71.33, samples=51 iops : min= 5, max= 23, avg=14.16, stdev= 4.43, samples=51 write: IOPS=14, BW=230KiB/s (236kB/s)(6032KiB/26173msec); 0 zone resets clat (usec): min=1844, max=140462, avg=31088.76, stdev=26786.50 lat (usec): min=1845, max=140463, avg=31137.62, stdev=26754.15 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 8], | 30.00th=[ 12], 40.00th=[ 18], 50.00th=[ 25], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 51], 90.00th=[ 70], 95.00th=[ 90], | 99.00th=[ 115], 99.50th=[ 130], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 95, max= 479, per=24.30%, avg=226.69, stdev=79.93, samples=51 iops : min= 5, max= 29, avg=13.43, stdev= 5.04, samples=51 lat (usec) : 50=0.13%, 100=3.26%, 250=1.30%, 500=0.26% lat (msec) : 2=0.52%, 4=2.99%, 10=9.77%, 20=13.28%, 50=46.22% lat (msec) : 100=20.83%, 250=1.43% cpu : usr=0.04%, sys=8.98%, ctx=2015, 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=179396: Sat Aug 15 11:24:00 2026 read: IOPS=14, BW=238KiB/s (244kB/s)(6032KiB/25345msec) clat (usec): min=49, max=143775, avg=34424.06, stdev=22712.28 lat (usec): min=50, max=143776, avg=34426.97, stdev=22713.73 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 75], 10.00th=[ 124], 20.00th=[ 17957], | 30.00th=[ 23725], 40.00th=[ 27657], 50.00th=[ 32637], 60.00th=[ 36963], | 70.00th=[ 42730], 80.00th=[ 52167], 90.00th=[ 63177], 95.00th=[ 70779], | 99.00th=[105382], 99.50th=[125305], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 63, max= 447, per=26.71%, avg=236.66, stdev=85.83, samples=50 iops : min= 3, max= 27, avg=14.06, stdev= 5.40, samples=50 write: IOPS=15, BW=247KiB/s (253kB/s)(6256KiB/25345msec); 0 zone resets clat (usec): min=1847, max=161480, avg=30940.52, stdev=29371.96 lat (usec): min=1848, max=161482, avg=30948.39, stdev=29369.01 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 16], 50.00th=[ 23], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 51], 90.00th=[ 71], 95.00th=[ 94], | 99.00th=[ 128], 99.50th=[ 159], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 127, max= 542, per=26.57%, avg=247.92, stdev=81.22, samples=50 iops : min= 7, max= 33, avg=14.78, stdev= 5.11, samples=50 lat (usec) : 50=0.13%, 100=3.52%, 250=1.95%, 500=0.39%, 750=0.39% lat (usec) : 1000=0.26% lat (msec) : 2=0.39%, 4=5.60%, 10=10.03%, 20=11.72%, 50=44.53% lat (msec) : 100=18.75%, 250=2.34% cpu : usr=0.09%, sys=9.27%, ctx=1903, 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=887KiB/s (908kB/s), 218KiB/s-239KiB/s (224kB/s-245kB/s), io=23.4MiB (24.5MB), run=25345-27006msec WRITE: bw=933KiB/s (956kB/s), 230KiB/s-249KiB/s (236kB/s-255kB/s), io=24.6MiB (25.8MB), run=25345-27006msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179388: Sat Aug 15 11:24:09 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(5920KiB/36236msec) clat (msec): min=6, max=196, avg=38.02, stdev=30.31 lat (msec): min=6, max=196, avg=38.03, stdev=30.31 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 32], | 70.00th=[ 37], 80.00th=[ 50], 90.00th=[ 77], 95.00th=[ 102], | 99.00th=[ 167], 99.50th=[ 186], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 31, max= 415, per=24.47%, avg=161.77, stdev=88.11, samples=70 iops : min= 1, max= 25, avg= 9.36, stdev= 5.51, samples=70 write: IOPS=10, BW=176KiB/s (180kB/s)(6368KiB/36236msec); 0 zone resets clat (msec): min=14, max=256, avg=55.03, stdev=33.19 lat (msec): min=14, max=256, avg=55.04, stdev=33.19 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 44], 60.00th=[ 53], | 70.00th=[ 67], 80.00th=[ 83], 90.00th=[ 101], 95.00th=[ 116], | 99.00th=[ 171], 99.50th=[ 176], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 31, max= 412, per=24.97%, avg=173.56, stdev=84.32, samples=71 iops : min= 1, max= 25, avg=10.10, stdev= 5.33, samples=71 lat (msec) : 10=0.91%, 20=14.58%, 50=52.86%, 100=24.09%, 250=7.42% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=3.35%, ctx=1384, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179390: Sat Aug 15 11:24:09 2026 read: IOPS=9, BW=160KiB/s (164kB/s)(5744KiB/35960msec) clat (msec): min=6, max=187, avg=37.83, stdev=30.88 lat (msec): min=6, max=187, avg=37.83, stdev=30.88 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 37], 80.00th=[ 53], 90.00th=[ 74], 95.00th=[ 103], | 99.00th=[ 165], 99.50th=[ 174], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 31, max= 507, per=24.73%, avg=163.43, stdev=101.56, samples=69 iops : min= 1, max= 31, avg= 9.45, stdev= 6.43, samples=69 write: IOPS=11, BW=182KiB/s (186kB/s)(6544KiB/35960msec); 0 zone resets clat (msec): min=13, max=232, avg=54.33, stdev=33.53 lat (msec): min=13, max=232, avg=54.34, stdev=33.53 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 39], 50.00th=[ 44], 60.00th=[ 51], | 70.00th=[ 65], 80.00th=[ 81], 90.00th=[ 106], 95.00th=[ 118], | 99.00th=[ 159], 99.50th=[ 201], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 32, max= 479, per=26.12%, avg=181.55, stdev=95.44, samples=71 iops : min= 2, max= 29, avg=10.59, stdev= 6.01, samples=71 lat (msec) : 10=1.04%, 20=15.89%, 50=52.21%, 100=21.88%, 250=8.98% cpu : usr=0.06%, sys=3.34%, ctx=1313, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179391: Sat Aug 15 11:24:09 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(6256KiB/35974msec) clat (msec): min=5, max=198, avg=37.83, stdev=28.29 lat (msec): min=5, max=198, avg=37.83, stdev=28.28 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 53], 90.00th=[ 81], 95.00th=[ 95], | 99.00th=[ 144], 99.50th=[ 163], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 31, max= 479, per=26.31%, avg=173.92, stdev=112.16, samples=71 iops : min= 1, max= 29, avg=10.11, stdev= 7.07, samples=71 write: IOPS=10, BW=168KiB/s (172kB/s)(6032KiB/35974msec); 0 zone resets clat (msec): min=15, max=265, avg=55.86, stdev=35.15 lat (msec): min=15, max=265, avg=55.87, stdev=35.15 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 32], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 57], | 70.00th=[ 69], 80.00th=[ 83], 90.00th=[ 105], 95.00th=[ 121], | 99.00th=[ 167], 99.50th=[ 199], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 31, max= 507, per=23.91%, avg=166.15, stdev=90.06, samples=71 iops : min= 1, max= 31, avg= 9.63, stdev= 5.71, samples=71 lat (msec) : 10=1.30%, 20=14.97%, 50=49.48%, 100=26.30%, 250=7.81% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=3.23%, ctx=1379, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179392: Sat Aug 15 11:24:09 2026 read: IOPS=10, BW=168KiB/s (172kB/s)(6032KiB/35891msec) clat (msec): min=6, max=240, avg=39.96, stdev=32.66 lat (msec): min=6, max=240, avg=39.96, stdev=32.66 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 55], 90.00th=[ 81], 95.00th=[ 111], | 99.00th=[ 167], 99.50th=[ 178], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 31, max= 416, per=25.74%, avg=170.16, stdev=91.06, samples=70 iops : min= 1, max= 26, avg= 9.87, stdev= 5.76, samples=70 write: IOPS=10, BW=174KiB/s (178kB/s)(6256KiB/35891msec); 0 zone resets clat (msec): min=14, max=185, avg=53.06, stdev=31.91 lat (msec): min=14, max=185, avg=53.06, stdev=31.91 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 32], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 62], 80.00th=[ 82], 90.00th=[ 101], 95.00th=[ 116], | 99.00th=[ 157], 99.50th=[ 171], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 31, max= 471, per=25.05%, avg=174.11, stdev=91.42, samples=71 iops : min= 1, max= 29, avg=10.14, stdev= 5.76, samples=71 lat (msec) : 10=1.43%, 20=14.06%, 50=52.86%, 100=23.31%, 250=8.33% cpu : usr=0.06%, sys=3.42%, ctx=1336, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=661KiB/s (677kB/s), 160KiB/s-174KiB/s (164kB/s-178kB/s), io=23.4MiB (24.5MB), run=35891-36236msec WRITE: bw=695KiB/s (712kB/s), 168KiB/s-182KiB/s (172kB/s-186kB/s), io=24.6MiB (25.8MB), run=35891-36236msec 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=179408: Sat Aug 15 11:24:21 2026 read: IOPS=2, BW=2499KiB/s (2559kB/s)(7168KiB/2868msec) clat (msec): min=142, max=218, avg=187.67, stdev=27.45 lat (msec): min=142, max=218, avg=187.67, stdev=27.45 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 188], 60.00th=[ 211], | 70.00th=[ 211], 80.00th=[ 211], 90.00th=[ 218], 95.00th=[ 218], | 99.00th=[ 218], 99.50th=[ 218], 99.90th=[ 218], 99.95th=[ 218], | 99.99th=[ 218] bw ( KiB/s): min= 2048, max= 4491, per=70.64%, avg=3542.00, stdev=1309.52, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1785KiB/s (1828kB/s)(5120KiB/2868msec); 0 zone resets clat (msec): min=100, max=747, avg=298.46, stdev=261.03 lat (msec): min=101, max=747, avg=298.56, stdev=261.07 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 186], 60.00th=[ 186], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1996, max= 4096, per=36.26%, avg=2545.75, stdev=1033.77, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (msec) : 250=83.33%, 500=8.33%, 750=8.33% cpu : usr=0.00%, sys=25.25%, ctx=293, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179409: Sat Aug 15 11:24:21 2026 read: IOPS=0, BW=501KiB/s (514kB/s)(2048KiB/4084msec) clat (msec): min=3, max=1355, avg=679.68, stdev=955.88 lat (msec): min=3, max=1355, avg=679.68, stdev=955.88 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4], | 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 1351], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 1868, max= 2048, per=39.05%, avg=1958.00, stdev=127.28, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2507KiB/s (2568kB/s)(10.0MiB/4084msec); 0 zone resets clat (msec): min=120, max=867, avg=265.18, stdev=219.43 lat (msec): min=120, max=867, avg=265.34, stdev=219.48 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 157], 50.00th=[ 182], 60.00th=[ 236], | 70.00th=[ 251], 80.00th=[ 262], 90.00th=[ 292], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 2048, max= 6131, per=56.38%, avg=3958.00, stdev=2215.91, samples=4 iops : min= 2, max= 5, avg= 3.50, stdev= 1.73, samples=4 lat (msec) : 4=8.33%, 250=50.00%, 500=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=20.94%, ctx=260, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179411: Sat Aug 15 11:24:21 2026 read: IOPS=1, BW=1885KiB/s (1930kB/s)(6144KiB/3260msec) clat (usec): min=1420, max=341513, avg=193271.61, stdev=122023.77 lat (usec): min=1422, max=341515, avg=193272.95, stdev=122023.56 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1418], 10.00th=[ 1418], 20.00th=[133694], | 30.00th=[133694], 40.00th=[162530], 50.00th=[162530], 60.00th=[229639], | 70.00th=[291505], 80.00th=[291505], 90.00th=[341836], 95.00th=[341836], | 99.00th=[341836], 99.50th=[341836], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 1996, max= 4096, per=67.73%, avg=3396.00, stdev=1212.44, samples=3 iops : min= 1, max= 4, avg= 3.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1885KiB/s (1930kB/s)(6144KiB/3260msec); 0 zone resets clat (msec): min=162, max=673, avg=342.64, stdev=194.33 lat (msec): min=162, max=673, avg=342.75, stdev=194.31 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 262], 50.00th=[ 262], 60.00th=[ 351], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1868, max= 4096, per=39.04%, avg=2740.75, stdev=1020.21, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.26, samples=4 lat (msec) : 2=8.33%, 250=41.67%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=23.57%, ctx=289, 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=179413: Sat Aug 15 11:24:21 2026 read: IOPS=1, BW=1945KiB/s (1991kB/s)(5120KiB/2633msec) clat (usec): min=465, max=197477, avg=76688.64, stdev=104056.55 lat (usec): min=467, max=197477, avg=76689.67, stdev=104056.39 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], 20.00th=[ 465], | 30.00th=[ 742], 40.00th=[ 742], 50.00th=[ 1139], 60.00th=[ 1139], | 70.00th=[183501], 80.00th=[183501], 90.00th=[198181], 95.00th=[198181], | 99.00th=[198181], 99.50th=[198181], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2722KiB/s (2788kB/s)(7168KiB/2633msec); 0 zone resets clat (msec): min=166, max=565, avg=316.11, stdev=149.86 lat (msec): min=166, max=565, avg=316.19, stdev=149.88 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 169], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 368], 80.00th=[ 397], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1393, max= 4087, per=33.92%, avg=2381.00, stdev=1175.54, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=25.34%, ctx=168, 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=5015KiB/s (5135kB/s), 501KiB/s-2499KiB/s (514kB/s-2559kB/s), io=20.0MiB (20.0MB), run=2633-4084msec WRITE: bw=7021KiB/s (7189kB/s), 1785KiB/s-2722KiB/s (1828kB/s-2788kB/s), io=28.0MiB (29.4MB), run=2633-4084msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179410: Sat Aug 15 11:24:21 2026 read: IOPS=2, BW=2061KiB/s (2110kB/s)(7168KiB/3478msec) clat (msec): min=70, max=447, avg=171.34, stdev=139.77 lat (msec): min=70, max=447, avg=171.34, stdev=139.77 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 83], | 30.00th=[ 103], 40.00th=[ 103], 50.00th=[ 109], 60.00th=[ 113], | 70.00th=[ 113], 80.00th=[ 275], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 1530, max= 4087, per=71.69%, avg=3232.00, stdev=1473.98, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1472KiB/s (1507kB/s)(5120KiB/3478msec); 0 zone resets clat (msec): min=106, max=1078, avg=373.61, stdev=400.89 lat (msec): min=106, max=1078, avg=373.71, stdev=400.89 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 107], | 30.00th=[ 163], 40.00th=[ 163], 50.00th=[ 213], 60.00th=[ 213], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 2043, max= 3923, per=47.27%, avg=2983.00, stdev=1329.36, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (msec) : 100=16.67%, 250=50.00%, 500=25.00%, 2000=8.33% cpu : usr=0.00%, sys=10.15%, ctx=135, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179412: Sat Aug 15 11:24:21 2026 read: IOPS=0, BW=459KiB/s (470kB/s)(2048KiB/4460msec) clat (msec): min=99, max=1370, avg=734.93, stdev=899.12 lat (msec): min=99, max=1370, avg=734.93, stdev=899.12 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 100], | 30.00th=[ 100], 40.00th=[ 100], 50.00th=[ 100], 60.00th=[ 1368], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 2035, max= 2043, per=45.23%, avg=2039.00, stdev= 5.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2296KiB/s (2351kB/s)(10.0MiB/4460msec); 0 zone resets clat (msec): min=72, max=527, avg=257.90, stdev=176.37 lat (msec): min=72, max=527, avg=258.05, stdev=176.31 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 82], | 30.00th=[ 125], 40.00th=[ 140], 50.00th=[ 142], 60.00th=[ 259], | 70.00th=[ 279], 80.00th=[ 460], 90.00th=[ 493], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 1961, max= 6107, per=56.08%, avg=3539.50, stdev=1964.76, samples=4 iops : min= 1, max= 5, avg= 2.50, stdev= 1.91, samples=4 lat (msec) : 100=25.00%, 250=25.00%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=8.34%, ctx=134, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179414: Sat Aug 15 11:24:21 2026 read: IOPS=1, BW=1406KiB/s (1439kB/s)(6144KiB/4371msec) clat (msec): min=57, max=388, avg=207.29, stdev=135.52 lat (msec): min=57, max=388, avg=207.29, stdev=135.52 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 105], | 30.00th=[ 105], 40.00th=[ 106], 50.00th=[ 106], 60.00th=[ 288], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 2023, max= 4071, per=74.07%, avg=3339.00, stdev=1142.09, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1406KiB/s (1439kB/s)(6144KiB/4371msec); 0 zone resets clat (msec): min=67, max=1778, avg=514.71, stdev=637.21 lat (msec): min=67, max=1778, avg=514.80, stdev=637.21 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 338], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 2023, max= 4087, per=40.36%, avg=2547.00, stdev=1026.70, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=5.68%, ctx=73, 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=179415: Sat Aug 15 11:24:21 2026 read: IOPS=1, BW=1127KiB/s (1154kB/s)(5120KiB/4543msec) clat (msec): min=61, max=342, avg=170.63, stdev=104.83 lat (msec): min=61, max=342, avg=170.64, stdev=104.83 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 62], | 30.00th=[ 126], 40.00th=[ 126], 50.00th=[ 148], 60.00th=[ 148], | 70.00th=[ 178], 80.00th=[ 178], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 2023, max= 4071, per=67.59%, avg=3047.00, stdev=1448.15, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1578KiB/s (1616kB/s)(7168KiB/4543msec); 0 zone resets clat (msec): min=69, max=1417, avg=471.81, stdev=509.81 lat (msec): min=69, max=1417, avg=471.90, stdev=509.79 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 92], | 30.00th=[ 103], 40.00th=[ 103], 50.00th=[ 178], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 793], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 2023, max= 4087, per=43.06%, avg=2717.67, stdev=1185.92, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=41.67%, 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=5.33%, ctx=79, 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=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=4508KiB/s (4616kB/s), 459KiB/s-2061KiB/s (470kB/s-2110kB/s), io=20.0MiB (20.0MB), run=3478-4543msec WRITE: bw=6311KiB/s (6463kB/s), 1406KiB/s-2296KiB/s (1439kB/s-2351kB/s), io=28.0MiB (29.4MB), run=3478-4543msec 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=179421: Sat Aug 15 11:24:33 2026 read: IOPS=1, BW=6172KiB/s (6320kB/s)(12.0MiB/1991msec) clat (msec): min=605, max=641, avg=627.05, stdev=19.03 lat (msec): min=605, max=641, avg=627.06, stdev=19.03 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 8000, max= 8143, per=100.00%, avg=8071.50, stdev=101.12, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=17.89%, ctx=495, 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=179422: Sat Aug 15 11:24:33 2026 read: IOPS=0, BW=2011KiB/s (2059kB/s)(4096KiB/2037msec) clat (nsec): min=628595k, max=628595k, avg=628594502.00, stdev= 0.00 lat (nsec): min=628597k, max=628597k, avg=628597254.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=4022KiB/s (4118kB/s)(8192KiB/2037msec); 0 zone resets clat (msec): min=657, max=717, avg=687.17, stdev=42.57 lat (msec): min=657, max=717, avg=687.49, stdev=42.59 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 718], | 70.00th=[ 718], 80.00th=[ 718], 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= 8000, max= 8000, per=58.38%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=100.00% cpu : usr=0.05%, sys=5.45%, ctx=188, 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=179423: Sat Aug 15 11:24:33 2026 write: IOPS=1, BW=5139KiB/s (5263kB/s)(12.0MiB/2391msec); 0 zone resets clat (msec): min=236, max=1292, avg=785.59, stdev=528.90 lat (msec): min=237, max=1292, avg=785.97, stdev=528.79 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 8000, max= 8000, per=58.38%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.81%, ctx=52, 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=179424: Sat Aug 15 11:24:33 2026 write: IOPS=1, BW=5464KiB/s (5595kB/s)(12.0MiB/2249msec); 0 zone resets clat (msec): min=508, max=1156, avg=743.49, stdev=359.18 lat (msec): min=509, max=1157, avg=743.81, stdev=359.15 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 6747, max= 8143, per=54.33%, avg=7445.00, stdev=987.12, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.98%, ctx=54, 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=8043KiB/s (8236kB/s), 2011KiB/s-6172KiB/s (2059kB/s-6320kB/s), io=16.0MiB (16.8MB), run=1991-2037msec WRITE: bw=13.4MiB/s (14.0MB/s), 4022KiB/s-5464KiB/s (4118kB/s-5595kB/s), io=32.0MiB (33.6MB), run=2037-2391msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179426: Sat Aug 15 11:24:33 2026 read: IOPS=1, BW=4828KiB/s (4944kB/s)(12.0MiB/2545msec) clat (msec): min=173, max=1432, avg=792.43, stdev=629.62 lat (msec): min=173, max=1432, avg=792.43, stdev=629.62 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.13%, ctx=48, 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=179427: Sat Aug 15 11:24:33 2026 read: IOPS=0, BW=1529KiB/s (1566kB/s)(4096KiB/2679msec) clat (nsec): min=640999k, max=640999k, avg=640998602.00, stdev= 0.00 lat (nsec): min=641001k, max=641001k, avg=641001422.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3058KiB/s (3131kB/s)(8192KiB/2679msec); 0 zone resets clat (msec): min=697, max=1285, avg=991.79, stdev=415.54 lat (msec): min=698, max=1285, avg=992.11, stdev=415.49 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 701], 50.00th=[ 701], 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= 8094, max= 8094, per=66.18%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.39%, ctx=65, 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=179428: Sat Aug 15 11:24:33 2026 write: IOPS=1, BW=4712KiB/s (4825kB/s)(12.0MiB/2608msec); 0 zone resets clat (msec): min=202, max=1726, avg=829.46, stdev=796.89 lat (msec): min=202, max=1726, avg=829.89, stdev=796.81 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 8094, max= 8159, per=66.44%, avg=8126.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.84%, ctx=41, 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=179429: Sat Aug 15 11:24:33 2026 write: IOPS=1, BW=5364KiB/s (5492kB/s)(12.0MiB/2291msec); 0 zone resets clat (msec): min=309, max=1027, avg=718.66, stdev=369.56 lat (msec): min=309, max=1027, avg=718.97, stdev=369.56 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 818], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 8175, max= 8175, per=66.84%, avg=8175.00, stdev= 0.00, 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=5.81%, ctx=48, 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=6116KiB/s (6262kB/s), 1529KiB/s-4828KiB/s (1566kB/s-4944kB/s), io=16.0MiB (16.8MB), run=2545-2679msec WRITE: bw=11.9MiB/s (12.5MB/s), 3058KiB/s-5364KiB/s (3131kB/s-5492kB/s), io=32.0MiB (33.6MB), run=2291-2679msec