== sanity test 398b: DIO and buffer IO race ============== 18:16:36 (1787609796) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.37974 s, 7.9 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=174831: Mon Aug 24 18:19:18 2026 read: IOPS=10, BW=43.9KiB/s (44.9kB/s)(5992KiB/136619msec) clat (usec): min=31, max=357651, avg=43690.91, stdev=34664.89 lat (usec): min=32, max=357653, avg=43694.50, stdev=34664.88 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 56], 10.00th=[ 75], 20.00th=[ 18482], | 30.00th=[ 25035], 40.00th=[ 31065], 50.00th=[ 38011], 60.00th=[ 44827], | 70.00th=[ 54789], 80.00th=[ 65274], 90.00th=[ 87557], 95.00th=[107480], | 99.00th=[158335], 99.50th=[177210], 99.90th=[208667], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 7, max= 103, per=26.36%, avg=44.03, stdev=20.07, samples=265 iops : min= 1, max= 25, avg=10.37, stdev= 5.05, samples=265 write: IOPS=11, BW=46.1KiB/s (47.2kB/s)(6296KiB/136619msec); 0 zone resets clat (usec): min=946, max=847329, avg=44923.39, stdev=52063.06 lat (usec): min=946, max=847330, avg=44930.19, stdev=52059.45 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1221], 10.00th=[ 1647], 20.00th=[ 4293], | 30.00th=[ 8160], 40.00th=[ 19006], 50.00th=[ 31851], 60.00th=[ 44303], | 70.00th=[ 57410], 80.00th=[ 78119], 90.00th=[104334], 95.00th=[135267], | 99.00th=[214959], 99.50th=[244319], 99.90th=[509608], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 7, max= 103, per=26.37%, avg=46.14, stdev=17.87, samples=266 iops : min= 1, max= 25, avg=10.90, stdev= 4.50, samples=266 lat (usec) : 50=1.04%, 100=4.79%, 250=0.46%, 500=0.20%, 750=0.10% lat (usec) : 1000=0.23% lat (msec) : 2=5.96%, 4=3.81%, 10=6.90%, 20=8.14%, 50=33.24% lat (msec) : 100=26.17%, 250=8.72%, 500=0.20%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=4.77%, ctx=6354, 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=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=174832: Mon Aug 24 18:19:18 2026 read: IOPS=10, BW=41.9KiB/s (42.9kB/s)(5940KiB/141913msec) clat (usec): min=35, max=297220, avg=45602.50, stdev=35266.55 lat (usec): min=36, max=297221, avg=45604.05, stdev=35266.50 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 57], 10.00th=[ 83], 20.00th=[ 20579], | 30.00th=[ 27132], 40.00th=[ 32637], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 54789], 80.00th=[ 69731], 90.00th=[ 92799], 95.00th=[109577], | 99.00th=[166724], 99.50th=[191890], 99.90th=[223347], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 5, max= 103, per=25.08%, avg=41.89, stdev=19.41, samples=276 iops : min= 1, max= 25, avg= 9.83, stdev= 4.87, samples=276 write: IOPS=11, BW=44.7KiB/s (45.8kB/s)(6348KiB/141913msec); 0 zone resets clat (usec): min=917, max=878036, avg=46454.49, stdev=52834.03 lat (usec): min=918, max=878037, avg=46457.78, stdev=52833.93 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1205], 10.00th=[ 1680], 20.00th=[ 4555], | 30.00th=[ 8979], 40.00th=[ 20055], 50.00th=[ 32900], 60.00th=[ 45876], | 70.00th=[ 60556], 80.00th=[ 79168], 90.00th=[109577], 95.00th=[137364], | 99.00th=[225444], 99.50th=[263193], 99.90th=[417334], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 5, max= 109, per=25.44%, avg=44.52, stdev=19.04, samples=277 iops : min= 1, max= 27, avg=10.49, stdev= 4.78, samples=277 lat (usec) : 50=0.68%, 100=4.46%, 250=0.59%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=5.66%, 4=3.94%, 10=6.97%, 20=7.49%, 50=34.31% lat (msec) : 100=25.59%, 250=9.77%, 500=0.26%, 1000=0.03% cpu : usr=0.07%, sys=4.62%, ctx=6524, 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=174833: Mon Aug 24 18:19:18 2026 read: IOPS=10, BW=42.1KiB/s (43.1kB/s)(6028KiB/143140msec) clat (usec): min=25, max=918734, avg=44098.10, stdev=40234.53 lat (usec): min=26, max=918735, avg=44101.74, stdev=40235.07 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 55], 10.00th=[ 72], 20.00th=[ 19268], | 30.00th=[ 25560], 40.00th=[ 30540], 50.00th=[ 36963], 60.00th=[ 44827], | 70.00th=[ 54789], 80.00th=[ 66847], 90.00th=[ 86508], 95.00th=[104334], | 99.00th=[156238], 99.50th=[179307], 99.90th=[244319], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 7, max= 104, per=25.19%, avg=42.06, stdev=19.40, samples=279 iops : min= 1, max= 26, avg= 9.88, stdev= 4.90, samples=279 write: IOPS=10, BW=43.7KiB/s (44.8kB/s)(6260KiB/143140msec); 0 zone resets clat (usec): min=908, max=578354, avg=48688.29, stdev=52978.43 lat (usec): min=908, max=578356, avg=48691.83, stdev=52978.10 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1221], 10.00th=[ 1778], 20.00th=[ 4948], | 30.00th=[ 9896], 40.00th=[ 22152], 50.00th=[ 35914], 60.00th=[ 48497], | 70.00th=[ 62653], 80.00th=[ 82314], 90.00th=[114820], 95.00th=[147850], | 99.00th=[223347], 99.50th=[256902], 99.90th=[497026], 99.95th=[574620], | 99.99th=[574620] bw ( KiB/s): min= 7, max= 112, per=24.85%, avg=43.49, stdev=19.16, samples=280 iops : min= 1, max= 28, avg=10.24, stdev= 4.83, samples=280 lat (usec) : 50=0.98%, 100=4.88%, 250=0.46%, 500=0.07%, 750=0.13% lat (usec) : 1000=0.16% lat (msec) : 2=5.70%, 4=3.16%, 10=6.67%, 20=7.65%, 50=33.46% lat (msec) : 100=26.69%, 250=9.67%, 500=0.26%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=4.40%, ctx=6449, 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=174834: Mon Aug 24 18:19:18 2026 read: IOPS=10, BW=42.4KiB/s (43.5kB/s)(6052KiB/142628msec) clat (usec): min=32, max=939259, avg=45160.45, stdev=41574.74 lat (usec): min=32, max=939260, avg=45162.58, stdev=41574.67 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 78], 20.00th=[ 18482], | 30.00th=[ 25560], 40.00th=[ 31851], 50.00th=[ 38536], 60.00th=[ 46400], | 70.00th=[ 54789], 80.00th=[ 67634], 90.00th=[ 89654], 95.00th=[106431], | 99.00th=[156238], 99.50th=[191890], 99.90th=[329253], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 5, max= 117, per=25.38%, avg=42.38, stdev=18.83, samples=278 iops : min= 1, max= 29, avg= 9.96, stdev= 4.75, samples=278 write: IOPS=10, BW=43.7KiB/s (44.8kB/s)(6236KiB/142628msec); 0 zone resets clat (usec): min=965, max=426319, avg=47378.11, stdev=49729.51 lat (usec): min=967, max=426320, avg=47383.42, stdev=49726.94 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1745], 20.00th=[ 4555], | 30.00th=[ 10028], 40.00th=[ 21365], 50.00th=[ 33162], 60.00th=[ 47449], | 70.00th=[ 64226], 80.00th=[ 83362], 90.00th=[110625], 95.00th=[141558], | 99.00th=[225444], 99.50th=[274727], 99.90th=[346031], 99.95th=[425722], | 99.99th=[425722] bw ( KiB/s): min= 7, max= 133, per=24.86%, avg=43.50, stdev=19.07, samples=279 iops : min= 1, max= 33, avg=10.24, stdev= 4.81, samples=279 lat (usec) : 50=1.20%, 100=4.23%, 250=0.29%, 500=0.03%, 1000=0.16% lat (msec) : 2=5.73%, 4=3.58%, 10=6.28%, 20=9.08%, 50=32.42% lat (msec) : 100=26.99%, 250=9.60%, 500=0.36%, 1000=0.03% cpu : usr=0.07%, sys=4.54%, ctx=6503, 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=168KiB/s (172kB/s), 41.9KiB/s-43.9KiB/s (42.9kB/s-44.9kB/s), io=23.4MiB (24.6MB), run=136619-143140msec WRITE: bw=176KiB/s (180kB/s), 43.7KiB/s-46.1KiB/s (44.8kB/s-47.2kB/s), io=24.6MiB (25.7MB), run=136619-143140msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174836: Mon Aug 24 18:21:48 2026 read: IOPS=5, BW=20.5KiB/s (20.0kB/s)(5992KiB/292269msec) clat (msec): min=4, max=795, avg=37.77, stdev=45.00 lat (msec): min=4, max=795, avg=37.78, stdev=45.00 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 52], 90.00th=[ 85], 95.00th=[ 127], | 99.00th=[ 190], 99.50th=[ 247], 99.90th=[ 456], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 88, per=28.80%, avg=23.62, stdev=15.63, samples=489 iops : min= 1, max= 22, avg= 5.26, stdev= 3.96, samples=489 write: IOPS=5, BW=21.5KiB/s (22.1kB/s)(6296KiB/292269msec); 0 zone resets clat (msec): min=40, max=720, avg=149.51, stdev=79.26 lat (msec): min=40, max=720, avg=149.51, stdev=79.26 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 67], 10.00th=[ 77], 20.00th=[ 90], | 30.00th=[ 104], 40.00th=[ 114], 50.00th=[ 127], 60.00th=[ 144], | 70.00th=[ 163], 80.00th=[ 203], 90.00th=[ 249], 95.00th=[ 309], | 99.00th=[ 435], 99.50th=[ 493], 99.90th=[ 625], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 48, per=25.33%, avg=21.53, stdev=10.36, samples=562 iops : min= 1, max= 12, avg= 4.74, stdev= 2.65, samples=562 lat (msec) : 10=4.30%, 20=17.68%, 50=17.15%, 100=19.73%, 250=35.87% lat (msec) : 500=5.05%, 750=0.20%, 1000=0.03% cpu : usr=0.03%, sys=0.99%, ctx=5091, 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=174837: Mon Aug 24 18:21:48 2026 read: IOPS=5, BW=20.3KiB/s (20.8kB/s)(5940KiB/292597msec) clat (msec): min=5, max=947, avg=38.38, stdev=50.46 lat (msec): min=5, max=947, avg=38.38, stdev=50.46 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 54], 90.00th=[ 84], 95.00th=[ 117], | 99.00th=[ 207], 99.50th=[ 271], 99.90th=[ 793], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 103, per=29.31%, avg=24.03, stdev=16.43, samples=476 iops : min= 1, max= 25, avg= 5.37, stdev= 4.14, samples=476 write: IOPS=5, BW=21.7KiB/s (22.2kB/s)(6348KiB/292597msec); 0 zone resets clat (msec): min=37, max=728, avg=148.27, stdev=77.53 lat (msec): min=37, max=728, avg=148.27, stdev=77.53 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 88], | 30.00th=[ 101], 40.00th=[ 113], 50.00th=[ 129], 60.00th=[ 148], | 70.00th=[ 167], 80.00th=[ 203], 90.00th=[ 255], 95.00th=[ 296], | 99.00th=[ 405], 99.50th=[ 464], 99.90th=[ 625], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 55, per=25.35%, avg=21.55, stdev=10.58, samples=565 iops : min= 1, max= 13, avg= 4.74, stdev= 2.70, samples=565 lat (msec) : 10=3.42%, 20=17.32%, 50=17.71%, 100=22.10%, 250=33.63% lat (msec) : 500=5.57%, 750=0.20%, 1000=0.07% cpu : usr=0.04%, sys=1.01%, ctx=5135, 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=174838: Mon Aug 24 18:21:48 2026 read: IOPS=5, BW=20.6KiB/s (21.1kB/s)(6028KiB/292262msec) clat (msec): min=5, max=781, avg=40.36, stdev=46.25 lat (msec): min=5, max=781, avg=40.36, stdev=46.25 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 39], 80.00th=[ 58], 90.00th=[ 96], 95.00th=[ 130], | 99.00th=[ 205], 99.50th=[ 218], 99.90th=[ 460], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 104, per=28.46%, avg=23.34, stdev=16.25, samples=498 iops : min= 1, max= 26, avg= 5.20, stdev= 4.11, samples=498 write: IOPS=5, BW=21.4KiB/s (21.9kB/s)(6260KiB/292262msec); 0 zone resets clat (msec): min=35, max=933, avg=147.69, stdev=81.21 lat (msec): min=35, max=933, avg=147.70, stdev=81.21 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 87], | 30.00th=[ 100], 40.00th=[ 111], 50.00th=[ 126], 60.00th=[ 142], | 70.00th=[ 165], 80.00th=[ 194], 90.00th=[ 255], 95.00th=[ 309], | 99.00th=[ 409], 99.50th=[ 468], 99.90th=[ 718], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 48, per=25.60%, avg=21.76, stdev=10.88, samples=553 iops : min= 1, max= 12, avg= 4.80, stdev= 2.76, samples=553 lat (msec) : 10=3.22%, 20=16.96%, 50=17.87%, 100=22.04%, 250=34.31% lat (msec) : 500=5.37%, 750=0.16%, 1000=0.07% cpu : usr=0.04%, sys=1.02%, ctx=5088, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174839: Mon Aug 24 18:21:48 2026 read: IOPS=5, BW=20.8KiB/s (21.3kB/s)(6052KiB/291070msec) clat (msec): min=5, max=430, avg=36.62, stdev=39.37 lat (msec): min=5, max=430, avg=36.62, stdev=39.37 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 51], 90.00th=[ 84], 95.00th=[ 117], | 99.00th=[ 197], 99.50th=[ 251], 99.90th=[ 321], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 7, max= 119, per=29.53%, avg=24.22, stdev=17.33, samples=482 iops : min= 1, max= 29, avg= 5.41, stdev= 4.35, samples=482 write: IOPS=5, BW=21.4KiB/s (21.9kB/s)(6236KiB/291070msec); 0 zone resets clat (msec): min=36, max=876, avg=150.93, stdev=83.61 lat (msec): min=36, max=876, avg=150.93, stdev=83.61 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 66], 10.00th=[ 74], 20.00th=[ 89], | 30.00th=[ 100], 40.00th=[ 113], 50.00th=[ 126], 60.00th=[ 146], | 70.00th=[ 169], 80.00th=[ 207], 90.00th=[ 259], 95.00th=[ 309], | 99.00th=[ 451], 99.50th=[ 514], 99.90th=[ 701], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 55, per=24.90%, avg=21.16, stdev=10.69, samples=565 iops : min= 1, max= 13, avg= 4.65, stdev= 2.73, samples=565 lat (msec) : 10=3.74%, 20=18.03%, 50=17.77%, 100=21.71%, 250=32.91% lat (msec) : 500=5.53%, 750=0.26%, 1000=0.03% cpu : usr=0.04%, sys=0.96%, ctx=5185, 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=82.1KiB/s (84.0kB/s), 20.3KiB/s-20.8KiB/s (20.8kB/s-21.3kB/s), io=23.4MiB (24.6MB), run=291070-292597msec WRITE: bw=85.9KiB/s (87.0kB/s), 21.4KiB/s-21.7KiB/s (21.9kB/s-22.2kB/s), io=24.6MiB (25.7MB), run=291070-292597msec 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=174900: Mon Aug 24 18:22:29 2026 read: IOPS=11, BW=188KiB/s (193kB/s)(5920KiB/31415msec) clat (usec): min=33, max=306727, avg=40942.59, stdev=36177.04 lat (usec): min=33, max=306729, avg=40943.54, stdev=36177.07 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 53], 10.00th=[ 59], 20.00th=[ 81], | 30.00th=[ 22938], 40.00th=[ 30540], 50.00th=[ 38011], 60.00th=[ 43779], | 70.00th=[ 53216], 80.00th=[ 64750], 90.00th=[ 84411], 95.00th=[102237], | 99.00th=[158335], 99.50th=[173016], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 31, max= 340, per=24.25%, avg=184.75, stdev=75.59, samples=61 iops : min= 1, max= 21, avg=10.80, stdev= 4.75, samples=61 write: IOPS=12, BW=203KiB/s (208kB/s)(6368KiB/31415msec); 0 zone resets clat (usec): min=1267, max=310094, avg=39819.67, stdev=42632.70 lat (usec): min=1269, max=310096, avg=39823.55, stdev=42635.36 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1680], 10.00th=[ 2540], 20.00th=[ 4883], | 30.00th=[ 8586], 40.00th=[ 15270], 50.00th=[ 25560], 60.00th=[ 37487], | 70.00th=[ 51643], 80.00th=[ 71828], 90.00th=[ 96994], 95.00th=[117965], | 99.00th=[193987], 99.50th=[212861], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 27, max= 350, per=24.99%, avg=200.44, stdev=81.76, samples=61 iops : min= 1, max= 21, avg=11.79, stdev= 5.14, samples=61 lat (usec) : 50=1.56%, 100=9.24%, 250=0.52%, 500=0.26% lat (msec) : 2=4.30%, 4=3.78%, 10=9.38%, 20=7.55%, 50=31.64% lat (msec) : 100=24.74%, 250=6.77%, 500=0.26% cpu : usr=0.08%, sys=4.95%, ctx=1381, 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=174901: Mon Aug 24 18:22:29 2026 read: IOPS=11, BW=189KiB/s (194kB/s)(5744KiB/30348msec) clat (usec): min=37, max=231302, avg=44073.24, stdev=36206.64 lat (usec): min=37, max=231302, avg=44074.67, stdev=36206.36 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 59], 10.00th=[ 63], 20.00th=[ 3261], | 30.00th=[ 25035], 40.00th=[ 31851], 50.00th=[ 39060], 60.00th=[ 46924], | 70.00th=[ 55313], 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[114820], | 99.00th=[154141], 99.50th=[177210], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 31, max= 476, per=24.92%, avg=189.88, stdev=76.16, samples=59 iops : min= 1, max= 29, avg=11.14, stdev= 4.83, samples=59 write: IOPS=13, BW=216KiB/s (221kB/s)(6544KiB/30348msec); 0 zone resets clat (usec): min=1181, max=221772, avg=35280.68, stdev=39353.89 lat (usec): min=1183, max=221773, avg=35284.03, stdev=39358.81 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1713], 10.00th=[ 1991], 20.00th=[ 3949], | 30.00th=[ 6783], 40.00th=[ 11600], 50.00th=[ 18744], 60.00th=[ 29754], | 70.00th=[ 46400], 80.00th=[ 65799], 90.00th=[ 94897], 95.00th=[115868], | 99.00th=[162530], 99.50th=[175113], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 63, max= 571, per=26.97%, avg=216.29, stdev=111.79, samples=59 iops : min= 3, max= 35, avg=12.78, stdev= 6.99, samples=59 lat (usec) : 50=0.91%, 100=7.16%, 250=0.78%, 500=0.39% lat (msec) : 2=5.34%, 4=5.73%, 10=8.85%, 20=9.90%, 50=29.30% lat (msec) : 100=23.31%, 250=8.33% cpu : usr=0.07%, sys=5.20%, ctx=1373, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174902: Mon Aug 24 18:22:29 2026 read: IOPS=12, BW=203KiB/s (208kB/s)(6256KiB/30815msec) clat (usec): min=36, max=279465, avg=39504.67, stdev=35050.88 lat (usec): min=36, max=279465, avg=39505.69, stdev=35050.99 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 55], 10.00th=[ 60], 20.00th=[ 70], | 30.00th=[ 21365], 40.00th=[ 30016], 50.00th=[ 34866], 60.00th=[ 43779], | 70.00th=[ 53740], 80.00th=[ 62653], 90.00th=[ 81265], 95.00th=[104334], | 99.00th=[154141], 99.50th=[164627], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 31, max= 377, per=27.39%, avg=208.68, stdev=80.44, samples=59 iops : min= 1, max= 23, avg=12.29, stdev= 5.02, samples=59 write: IOPS=12, BW=196KiB/s (200kB/s)(6032KiB/30815msec); 0 zone resets clat (usec): min=1394, max=248102, avg=39926.54, stdev=43314.04 lat (usec): min=1396, max=248104, avg=39928.37, stdev=43314.19 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1696], 10.00th=[ 2606], 20.00th=[ 5407], | 30.00th=[ 8717], 40.00th=[ 14222], 50.00th=[ 23987], 60.00th=[ 37487], | 70.00th=[ 51119], 80.00th=[ 65274], 90.00th=[105382], 95.00th=[127402], | 99.00th=[183501], 99.50th=[214959], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 27, max= 380, per=24.15%, avg=193.72, stdev=71.86, samples=60 iops : min= 1, max= 23, avg=11.37, stdev= 4.57, samples=60 lat (usec) : 50=1.43%, 100=11.07%, 250=0.39%, 1000=0.26% lat (msec) : 2=4.17%, 4=2.99%, 10=9.51%, 20=7.42%, 50=29.95% lat (msec) : 100=24.87%, 250=7.81%, 500=0.13% cpu : usr=0.07%, sys=5.05%, ctx=1419, 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=174903: Mon Aug 24 18:22:29 2026 read: IOPS=12, BW=197KiB/s (201kB/s)(6032KiB/30655msec) clat (usec): min=34, max=204450, avg=39544.47, stdev=35510.77 lat (usec): min=35, max=204451, avg=39547.55, stdev=35510.80 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 53], 10.00th=[ 58], 20.00th=[ 76], | 30.00th=[ 19268], 40.00th=[ 27919], 50.00th=[ 36439], 60.00th=[ 43779], | 70.00th=[ 54789], 80.00th=[ 64750], 90.00th=[ 83362], 95.00th=[101188], | 99.00th=[158335], 99.50th=[204473], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 30, max= 380, per=26.54%, avg=202.26, stdev=85.84, samples=58 iops : min= 1, max= 23, avg=11.90, stdev= 5.42, samples=58 write: IOPS=12, BW=204KiB/s (209kB/s)(6256KiB/30655msec); 0 zone resets clat (usec): min=1317, max=315302, avg=39165.75, stdev=46710.10 lat (usec): min=1318, max=315304, avg=39167.40, stdev=46710.14 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1631], 10.00th=[ 2245], 20.00th=[ 4490], | 30.00th=[ 7439], 40.00th=[ 13435], 50.00th=[ 23462], 60.00th=[ 33817], | 70.00th=[ 50594], 80.00th=[ 66323], 90.00th=[ 91751], 95.00th=[127402], | 99.00th=[256902], 99.50th=[283116], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 55, max= 408, per=25.39%, avg=203.62, stdev=87.27, samples=60 iops : min= 3, max= 25, avg=12.00, stdev= 5.51, samples=60 lat (usec) : 50=1.82%, 100=8.72%, 250=1.17%, 500=0.65%, 750=0.13% lat (msec) : 2=5.21%, 4=4.43%, 10=9.64%, 20=7.16%, 50=29.17% lat (msec) : 100=25.39%, 250=5.99%, 500=0.52% cpu : usr=0.07%, sys=5.01%, ctx=1337, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=762KiB/s (781kB/s), 188KiB/s-203KiB/s (193kB/s-208kB/s), io=23.4MiB (24.5MB), run=30348-31415msec WRITE: bw=802KiB/s (821kB/s), 196KiB/s-216KiB/s (200kB/s-221kB/s), io=24.6MiB (25.8MB), run=30348-31415msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174895: Mon Aug 24 18:23:19 2026 read: IOPS=4, BW=73.5KiB/s (75.3kB/s)(5920KiB/80551msec) clat (msec): min=7, max=370, avg=47.15, stdev=45.14 lat (msec): min=7, max=370, avg=47.15, stdev=45.14 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 47], 80.00th=[ 59], 90.00th=[ 96], 95.00th=[ 138], | 99.00th=[ 259], 99.50th=[ 309], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 31, max= 288, per=28.53%, avg=84.15, stdev=52.50, samples=138 iops : min= 1, max= 18, avg= 4.47, stdev= 3.34, samples=138 write: IOPS=4, BW=79.1KiB/s (80.0kB/s)(6368KiB/80551msec); 0 zone resets clat (msec): min=38, max=406, avg=158.07, stdev=71.22 lat (msec): min=38, max=406, avg=158.07, stdev=71.22 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 81], 10.00th=[ 86], 20.00th=[ 101], | 30.00th=[ 114], 40.00th=[ 129], 50.00th=[ 140], 60.00th=[ 155], | 70.00th=[ 176], 80.00th=[ 201], 90.00th=[ 271], 95.00th=[ 317], | 99.00th=[ 393], 99.50th=[ 397], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 31, max= 160, per=26.43%, avg=81.92, stdev=32.92, samples=153 iops : min= 1, max= 10, avg= 4.32, stdev= 2.14, samples=153 lat (msec) : 10=0.78%, 20=9.38%, 50=25.00%, 100=19.01%, 250=38.80% lat (msec) : 500=7.03% cpu : usr=0.04%, sys=1.06%, ctx=1306, 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=174897: Mon Aug 24 18:23:19 2026 read: IOPS=4, BW=70.8KiB/s (72.5kB/s)(5744KiB/81128msec) clat (msec): min=7, max=382, avg=43.03, stdev=38.15 lat (msec): min=7, max=382, avg=43.04, stdev=38.15 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 60], 90.00th=[ 87], 95.00th=[ 110], | 99.00th=[ 182], 99.50th=[ 305], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 27, max= 349, per=30.04%, avg=88.61, stdev=60.08, samples=128 iops : min= 1, max= 21, avg= 4.73, stdev= 3.78, samples=128 write: IOPS=5, BW=80.7KiB/s (82.6kB/s)(6544KiB/81128msec); 0 zone resets clat (msec): min=52, max=650, avg=159.88, stdev=77.30 lat (msec): min=52, max=650, avg=159.88, stdev=77.30 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 75], 10.00th=[ 84], 20.00th=[ 103], | 30.00th=[ 114], 40.00th=[ 130], 50.00th=[ 146], 60.00th=[ 159], | 70.00th=[ 176], 80.00th=[ 207], 90.00th=[ 264], 95.00th=[ 313], | 99.00th=[ 435], 99.50th=[ 443], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 30, max= 191, per=26.41%, avg=81.86, stdev=35.24, samples=157 iops : min= 1, max= 11, avg= 4.31, stdev= 2.27, samples=157 lat (msec) : 10=0.91%, 20=10.68%, 50=23.18%, 100=19.27%, 250=39.58% lat (msec) : 500=6.25%, 750=0.13% cpu : usr=0.03%, sys=1.06%, ctx=1333, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174898: Mon Aug 24 18:23:19 2026 read: IOPS=5, BW=80.9KiB/s (82.9kB/s)(6256KiB/77293msec) clat (msec): min=6, max=316, avg=42.76, stdev=39.45 lat (msec): min=6, max=316, avg=42.76, stdev=39.45 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 58], 90.00th=[ 79], 95.00th=[ 111], | 99.00th=[ 236], 99.50th=[ 296], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 30, max= 288, per=30.70%, avg=90.57, stdev=61.22, samples=136 iops : min= 1, max= 18, avg= 4.87, stdev= 3.89, samples=136 write: IOPS=4, BW=78.0KiB/s (79.9kB/s)(6032KiB/77293msec); 0 zone resets clat (msec): min=45, max=569, avg=159.81, stdev=70.53 lat (msec): min=45, max=569, avg=159.81, stdev=70.53 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 74], 10.00th=[ 87], 20.00th=[ 104], | 30.00th=[ 117], 40.00th=[ 132], 50.00th=[ 148], 60.00th=[ 163], | 70.00th=[ 184], 80.00th=[ 207], 90.00th=[ 253], 95.00th=[ 305], | 99.00th=[ 376], 99.50th=[ 493], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 27, max= 191, per=25.49%, avg=79.03, stdev=32.59, samples=149 iops : min= 1, max= 11, avg= 4.14, stdev= 2.10, samples=149 lat (msec) : 10=1.82%, 20=11.46%, 50=25.00%, 100=18.10%, 250=38.28% lat (msec) : 500=5.21%, 750=0.13% cpu : usr=0.03%, sys=1.16%, ctx=1402, 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=174899: Mon Aug 24 18:23:19 2026 read: IOPS=4, BW=75.3KiB/s (77.1kB/s)(6032KiB/80133msec) clat (msec): min=7, max=341, avg=44.20, stdev=40.06 lat (msec): min=7, max=341, avg=44.21, stdev=40.06 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 46], 80.00th=[ 58], 90.00th=[ 90], 95.00th=[ 124], | 99.00th=[ 188], 99.50th=[ 326], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 30, max= 254, per=29.35%, avg=86.60, stdev=53.03, samples=136 iops : min= 1, max= 15, avg= 4.61, stdev= 3.36, samples=136 write: IOPS=4, BW=78.1KiB/s (79.9kB/s)(6256KiB/80133msec); 0 zone resets clat (msec): min=47, max=642, avg=162.16, stdev=70.12 lat (msec): min=47, max=642, avg=162.17, stdev=70.12 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 79], 10.00th=[ 94], 20.00th=[ 112], | 30.00th=[ 125], 40.00th=[ 136], 50.00th=[ 148], 60.00th=[ 165], | 70.00th=[ 180], 80.00th=[ 201], 90.00th=[ 251], 95.00th=[ 279], | 99.00th=[ 443], 99.50th=[ 489], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 31, max= 190, per=25.70%, avg=79.68, stdev=31.91, samples=154 iops : min= 1, max= 11, avg= 4.18, stdev= 2.04, samples=154 lat (msec) : 10=1.17%, 20=11.85%, 50=22.53%, 100=16.41%, 250=42.58% lat (msec) : 500=5.34%, 750=0.13% cpu : usr=0.03%, sys=1.10%, ctx=1340, 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=295KiB/s (302kB/s), 70.8KiB/s-80.9KiB/s (72.5kB/s-82.9kB/s), io=23.4MiB (24.5MB), run=77293-81128msec WRITE: bw=311KiB/s (318kB/s), 78.0KiB/s-80.7KiB/s (79.9kB/s-82.6kB/s), io=24.6MiB (25.8MB), run=77293-81128msec 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=174926: Mon Aug 24 18:23:32 2026 read: IOPS=1, BW=1426KiB/s (1461kB/s)(7168KiB/5025msec) clat (usec): min=1241, max=534590, avg=168885.46, stdev=201624.33 lat (usec): min=1242, max=534591, avg=168886.75, stdev=201624.50 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1237], 10.00th=[ 1237], 20.00th=[ 2737], | 30.00th=[ 3294], 40.00th=[ 3294], 50.00th=[139461], 60.00th=[168821], | 70.00th=[168821], 80.00th=[329253], 90.00th=[534774], 95.00th=[534774], | 99.00th=[534774], 99.50th=[534774], 99.90th=[534774], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 1665, max= 4063, per=80.80%, avg=2942.75, stdev=1266.88, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=1019KiB/s (1043kB/s)(5120KiB/5025msec); 0 zone resets clat (msec): min=262, max=1571, avg=727.80, stdev=499.92 lat (msec): min=262, max=1571, avg=728.38, stdev=499.65 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 514], 40.00th=[ 514], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 1917, max= 2043, per=39.19%, avg=1998.50, stdev=55.72, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 2=8.33%, 4=16.67%, 250=16.67%, 500=16.67%, 750=33.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=8.60%, ctx=193, 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=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=174928: Mon Aug 24 18:23:32 2026 read: IOPS=0, BW=364KiB/s (373kB/s)(2048KiB/5623msec) clat (usec): min=502, max=342283, avg=171392.78, stdev=241675.54 lat (usec): min=503, max=342285, avg=171394.59, stdev=241675.99 clat percentiles (usec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[341836], | 70.00th=[341836], 80.00th=[341836], 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= 1595, max= 1992, per=49.24%, avg=1793.50, stdev=280.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1821KiB/s (1865kB/s)(10.0MiB/5623msec); 0 zone resets clat (msec): min=118, max=897, avg=499.08, stdev=245.29 lat (msec): min=118, max=898, avg=499.27, stdev=245.34 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 279], | 30.00th=[ 284], 40.00th=[ 334], 50.00th=[ 498], 60.00th=[ 523], | 70.00th=[ 634], 80.00th=[ 651], 90.00th=[ 768], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1992, max= 3835, per=44.64%, avg=2276.43, stdev=687.48, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (usec) : 750=8.33% lat (msec) : 250=8.33%, 500=41.67%, 750=25.00%, 1000=16.67% cpu : usr=0.00%, sys=8.96%, ctx=110, 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=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=174930: Mon Aug 24 18:23:32 2026 read: IOPS=1, BW=1525KiB/s (1561kB/s)(6144KiB/4030msec) clat (usec): min=457, max=360583, avg=169836.66, stdev=185372.44 lat (usec): min=458, max=360585, avg=169838.02, stdev=185372.39 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 457], 10.00th=[ 457], 20.00th=[ 660], | 30.00th=[ 660], 40.00th=[ 1795], 50.00th=[ 1795], 60.00th=[325059], | 70.00th=[329253], 80.00th=[329253], 90.00th=[358613], 95.00th=[358613], | 99.00th=[358613], 99.50th=[358613], 99.90th=[358613], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 1992, max= 4000, per=68.88%, avg=2508.50, stdev=994.43, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1525KiB/s (1561kB/s)(6144KiB/4030msec); 0 zone resets clat (msec): min=164, max=806, avg=469.02, stdev=263.35 lat (msec): min=164, max=806, avg=469.09, stdev=263.34 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 460], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1774, max= 2031, per=38.30%, avg=1952.80, stdev=110.31, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 250=8.33%, 500=50.00%, 1000=16.67% cpu : usr=0.00%, sys=6.95%, ctx=135, 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=174931: Mon Aug 24 18:23:32 2026 read: IOPS=0, BW=984KiB/s (1007kB/s)(5120KiB/5205msec) clat (usec): min=401, max=323058, avg=187746.18, stdev=169957.16 lat (usec): min=402, max=323059, avg=187747.21, stdev=169957.13 clat percentiles (usec): | 1.00th=[ 404], 5.00th=[ 404], 10.00th=[ 404], 20.00th=[ 404], | 30.00th=[ 3163], 40.00th=[ 3163], 50.00th=[299893], 60.00th=[299893], | 70.00th=[312476], 80.00th=[312476], 90.00th=[325059], 95.00th=[325059], | 99.00th=[325059], 99.50th=[325059], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 1992, max= 4039, per=73.71%, avg=2684.67, stdev=1172.99, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1377KiB/s (1410kB/s)(7168KiB/5205msec); 0 zone resets clat (msec): min=113, max=1089, avg=595.73, stdev=338.86 lat (msec): min=113, max=1089, avg=595.80, stdev=338.83 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 334], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 701], 60.00th=[ 718], | 70.00th=[ 718], 80.00th=[ 852], 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= 1499, max= 2043, per=37.19%, avg=1896.40, stdev=227.27, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 500=8.33% lat (msec) : 4=8.33%, 250=8.33%, 500=41.67%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=9.07%, ctx=137, 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=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=3642KiB/s (3730kB/s), 364KiB/s-1525KiB/s (373kB/s-1561kB/s), io=20.0MiB (20.0MB), run=4030-5623msec WRITE: bw=5099KiB/s (5221kB/s), 1019KiB/s-1821KiB/s (1043kB/s-1865kB/s), io=28.0MiB (29.4MB), run=4030-5623msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174924: Mon Aug 24 18:23:33 2026 read: IOPS=1, BW=1566KiB/s (1604kB/s)(7168KiB/4577msec) clat (msec): min=144, max=584, avg=293.61, stdev=178.18 lat (msec): min=144, max=584, avg=293.62, stdev=178.18 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 188], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 485], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1486, max= 4007, per=87.71%, avg=2798.75, stdev=1340.33, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1119KiB/s (1145kB/s)(5120KiB/4577msec); 0 zone resets clat (msec): min=216, max=879, avg=490.61, stdev=251.93 lat (msec): min=216, max=879, avg=491.08, stdev=252.01 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 218], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 489], 60.00th=[ 489], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1984, max= 4071, per=60.27%, avg=2692.67, stdev=1193.83, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=1.77%, ctx=50, 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=174925: Mon Aug 24 18:23:33 2026 read: IOPS=0, BW=327KiB/s (335kB/s)(2048KiB/6262msec) clat (msec): min=247, max=773, avg=510.65, stdev=372.16 lat (msec): min=247, max=773, avg=510.65, stdev=372.16 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 249], 60.00th=[ 776], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1802, max= 2003, per=59.62%, avg=1902.50, stdev=142.13, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1635KiB/s (1675kB/s)(10.0MiB/6262msec); 0 zone resets clat (msec): min=245, max=1077, avg=501.60, stdev=255.22 lat (msec): min=246, max=1077, avg=501.69, stdev=255.22 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 317], | 30.00th=[ 334], 40.00th=[ 355], 50.00th=[ 363], 60.00th=[ 376], | 70.00th=[ 600], 80.00th=[ 651], 90.00th=[ 701], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1802, max= 2048, per=43.77%, avg=1955.75, stdev=80.81, samples=8 iops : min= 1, max= 2, avg= 1.12, stdev= 0.35, samples=8 lat (msec) : 250=16.67%, 500=41.67%, 750=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.02%, sys=3.69%, ctx=81, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=174927: Mon Aug 24 18:23:33 2026 read: IOPS=0, BW=957KiB/s (980kB/s)(6144KiB/6417msec) clat (msec): min=168, max=630, avg=364.57, stdev=191.34 lat (msec): min=168, max=630, avg=364.57, stdev=191.34 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 245], 50.00th=[ 245], 60.00th=[ 397], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1935, max= 3785, per=76.55%, avg=2442.75, stdev=896.04, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=957KiB/s (980kB/s)(6144KiB/6417msec); 0 zone resets clat (msec): min=252, max=1598, avg=646.91, stdev=515.44 lat (msec): min=252, max=1599, avg=647.12, stdev=515.76 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 253], 10.00th=[ 253], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 693], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 1802, max= 2048, per=44.12%, avg=1971.50, stdev=89.09, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 250=25.00%, 500=33.33%, 750=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.05%, sys=2.37%, ctx=73, 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=174929: Mon Aug 24 18:23:33 2026 read: IOPS=1, BW=1028KiB/s (1053kB/s)(5120KiB/4981msec) clat (msec): min=155, max=346, avg=270.79, stdev=90.97 lat (msec): min=155, max=346, avg=270.79, stdev=90.97 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 326], 60.00th=[ 326], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 3785, max= 3968, per=100.00%, avg=3876.50, stdev=129.40, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1439KiB/s (1474kB/s)(7168KiB/4981msec); 0 zone resets clat (msec): min=191, max=937, avg=509.34, stdev=265.03 lat (msec): min=191, max=937, avg=509.42, stdev=265.05 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 326], | 30.00th=[ 372], 40.00th=[ 372], 50.00th=[ 380], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 751], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1950, max= 3605, per=55.05%, avg=2459.80, stdev=719.47, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=2.11%, ctx=55, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3192KiB/s (3268kB/s), 327KiB/s-1566KiB/s (335kB/s-1604kB/s), io=20.0MiB (20.0MB), run=4577-6417msec WRITE: bw=4468KiB/s (4575kB/s), 957KiB/s-1635KiB/s (980kB/s-1675kB/s), io=28.0MiB (29.4MB), run=4577-6417msec 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=174939: Mon Aug 24 18:23:51 2026 read: IOPS=1, BW=4180KiB/s (4280kB/s)(12.0MiB/2940msec) clat (msec): min=803, max=976, avg=908.16, stdev=91.83 lat (msec): min=803, max=976, avg=908.16, stdev=91.83 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7984, max= 8175, per=100.00%, avg=8079.50, stdev=135.06, 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=14.36%, ctx=379, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174940: Mon Aug 24 18:23:51 2026 read: IOPS=0, BW=1405KiB/s (1438kB/s)(4096KiB/2916msec) clat (nsec): min=594819k, max=594819k, avg=594819358.00, stdev= 0.00 lat (nsec): min=594822k, max=594822k, avg=594822078.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] 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=2809KiB/s (2877kB/s)(8192KiB/2916msec); 0 zone resets clat (msec): min=729, max=1550, avg=1139.99, stdev=580.02 lat (msec): min=730, max=1550, avg=1140.31, stdev=580.03 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 1552], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8143, max= 8143, per=90.69%, avg=8143.00, 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=2.61%, ctx=122, 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=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=174941: Mon Aug 24 18:23:51 2026 write: IOPS=0, BW=3367KiB/s (3448kB/s)(12.0MiB/3649msec); 0 zone resets clat (msec): min=359, max=1737, avg=1201.44, stdev=737.81 lat (msec): min=360, max=1739, avg=1202.30, stdev=738.40 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 1502], 50.00th=[ 1502], 60.00th=[ 1502], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 7713, max= 7713, per=85.90%, avg=7713.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.89%, ctx=38, 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=174944: Mon Aug 24 18:23:51 2026 write: IOPS=1, BW=4243KiB/s (4345kB/s)(12.0MiB/2896msec); 0 zone resets clat (msec): min=702, max=1129, avg=945.01, stdev=219.22 lat (msec): min=703, max=1130, avg=945.42, stdev=219.15 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7713, max= 8126, per=88.20%, avg=7919.50, stdev=292.04, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=6.80%, ctx=63, 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=5573KiB/s (5707kB/s), 1405KiB/s-4180KiB/s (1438kB/s-4280kB/s), io=16.0MiB (16.8MB), run=2916-2940msec WRITE: bw=8980KiB/s (9196kB/s), 2809KiB/s-4243KiB/s (2877kB/s-4345kB/s), io=32.0MiB (33.6MB), run=2896-3649msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174942: Mon Aug 24 18:23:51 2026 read: IOPS=1, BW=4139KiB/s (4238kB/s)(12.0MiB/2969msec) clat (msec): min=437, max=1491, avg=961.81, stdev=526.81 lat (msec): min=437, max=1491, avg=961.81, stdev=526.81 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 8031, max= 8143, per=100.00%, avg=8087.00, stdev=79.20, 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=2.49%, ctx=46, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174943: Mon Aug 24 18:23:51 2026 read: IOPS=0, BW=1135KiB/s (1162kB/s)(4096KiB/3610msec) clat (nsec): min=1302.3M, max=1302.3M, avg=1302299040.00, stdev= 0.00 lat (nsec): min=1302.3M, max=1302.3M, avg=1302301085.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1301], 5.00th=[ 1301], 10.00th=[ 1301], 20.00th=[ 1301], | 30.00th=[ 1301], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 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= 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=2269KiB/s (2324kB/s)(8192KiB/3610msec); 0 zone resets clat (msec): min=505, max=1747, avg=1126.32, stdev=878.59 lat (msec): min=513, max=1747, avg=1130.70, stdev=872.92 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 1754], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 8126, max= 8126, per=99.77%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.03%, sys=2.96%, ctx=53, 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=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=174945: Mon Aug 24 18:23:51 2026 write: IOPS=0, BW=3054KiB/s (3128kB/s)(12.0MiB/4023msec); 0 zone resets clat (msec): min=243, max=2079, avg=1317.28, stdev=956.99 lat (msec): min=243, max=2079, avg=1317.70, stdev=957.12 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 1636], 50.00th=[ 1636], 60.00th=[ 1636], | 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= 8126, max= 8126, per=99.77%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.46%, ctx=44, 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=174946: Mon Aug 24 18:23:51 2026 write: IOPS=1, BW=4501KiB/s (4609kB/s)(12.0MiB/2730msec); 0 zone resets clat (msec): min=327, max=1791, avg=836.64, stdev=827.50 lat (msec): min=330, max=1793, avg=838.83, stdev=827.54 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 1787], 80.00th=[ 1787], 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= 5777, max= 8031, per=84.76%, avg=6904.00, stdev=1593.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.26%, ctx=51, 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=4539KiB/s (4647kB/s), 1135KiB/s-4139KiB/s (1162kB/s-4238kB/s), io=16.0MiB (16.8MB), run=2969-3610msec WRITE: bw=8145KiB/s (8341kB/s), 2269KiB/s-4501KiB/s (2324kB/s-4609kB/s), io=32.0MiB (33.6MB), run=2730-4023msec