== sanity test 398b: DIO and buffer IO race ============== 08:48:19 (1785761299) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.22407 s, 8.1 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=179786: Mon Aug 3 08:50:38 2026 read: IOPS=12, BW=49.2KiB/s (50.4kB/s)(5992KiB/121683msec) clat (usec): min=36, max=229697, avg=44407.34, stdev=29416.61 lat (usec): min=36, max=229698, avg=44410.12, stdev=29417.69 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 9372], 10.00th=[ 16319], 20.00th=[ 22414], | 30.00th=[ 27395], 40.00th=[ 32375], 50.00th=[ 38536], 60.00th=[ 44827], | 70.00th=[ 54264], 80.00th=[ 63701], 90.00th=[ 80217], 95.00th=[ 95945], | 99.00th=[154141], 99.50th=[177210], 99.90th=[225444], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 7, max= 104, per=24.76%, avg=48.53, stdev=18.54, samples=240 iops : min= 1, max= 26, avg=11.48, stdev= 4.67, samples=240 write: IOPS=12, BW=51.7KiB/s (52.0kB/s)(6296KiB/121683msec); 0 zone resets clat (usec): min=1144, max=597049, avg=34795.65, stdev=37736.80 lat (usec): min=1144, max=597050, avg=34798.50, stdev=37737.14 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1418], 10.00th=[ 2040], 20.00th=[ 4178], | 30.00th=[ 7177], 40.00th=[ 15926], 50.00th=[ 25297], 60.00th=[ 33424], | 70.00th=[ 45351], 80.00th=[ 61080], 90.00th=[ 84411], 95.00th=[104334], | 99.00th=[145753], 99.50th=[177210], 99.90th=[278922], 99.95th=[599786], | 99.99th=[599786] bw ( KiB/s): min= 7, max= 127, per=24.87%, avg=51.24, stdev=22.86, samples=239 iops : min= 1, max= 31, avg=12.16, stdev= 5.74, samples=239 lat (usec) : 50=0.68%, 100=1.20%, 250=0.26%, 500=0.07%, 750=0.03% lat (msec) : 2=5.01%, 4=4.85%, 10=8.33%, 20=9.51%, 50=39.84% lat (msec) : 100=25.23%, 250=4.92%, 500=0.03%, 750=0.03% cpu : usr=0.06%, sys=5.03%, ctx=6600, 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=179787: Mon Aug 3 08:50:38 2026 read: IOPS=12, BW=50.0KiB/s (51.2kB/s)(5940KiB/118730msec) clat (usec): min=36, max=202931, avg=43928.38, stdev=26874.53 lat (usec): min=36, max=202932, avg=43929.53, stdev=26874.76 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 11338], 10.00th=[ 17433], 20.00th=[ 22938], | 30.00th=[ 27657], 40.00th=[ 32637], 50.00th=[ 38536], 60.00th=[ 45351], | 70.00th=[ 52691], 80.00th=[ 63701], 90.00th=[ 79168], 95.00th=[ 94897], | 99.00th=[123208], 99.50th=[149947], 99.90th=[177210], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 15, max= 95, per=25.36%, avg=49.71, stdev=16.71, samples=234 iops : min= 3, max= 23, avg=11.79, stdev= 4.20, samples=234 write: IOPS=13, BW=53.5KiB/s (54.7kB/s)(6348KiB/118730msec); 0 zone resets clat (usec): min=1109, max=592498, avg=33450.10, stdev=36825.66 lat (usec): min=1110, max=592499, avg=33456.03, stdev=36824.90 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1352], 10.00th=[ 1876], 20.00th=[ 4293], | 30.00th=[ 7504], 40.00th=[ 15008], 50.00th=[ 24249], 60.00th=[ 31851], | 70.00th=[ 42206], 80.00th=[ 57410], 90.00th=[ 78119], 95.00th=[100140], | 99.00th=[152044], 99.50th=[168821], 99.90th=[274727], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 7, max= 142, per=25.80%, avg=53.16, stdev=23.97, samples=234 iops : min= 1, max= 35, avg=12.66, stdev= 6.03, samples=234 lat (usec) : 50=0.49%, 100=1.30%, 250=0.10%, 1000=0.03% lat (msec) : 2=5.53%, 4=4.33%, 10=8.20%, 20=10.09%, 50=41.11% lat (msec) : 100=24.19%, 250=4.56%, 500=0.03%, 750=0.03% cpu : usr=0.05%, sys=5.23%, ctx=6590, 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=179788: Mon Aug 3 08:50:38 2026 read: IOPS=12, BW=50.4KiB/s (51.7kB/s)(6028KiB/119502msec) clat (usec): min=33, max=332896, avg=43413.23, stdev=29228.00 lat (usec): min=33, max=332897, avg=43414.55, stdev=29228.13 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 1598], 10.00th=[ 16057], 20.00th=[ 21890], | 30.00th=[ 26346], 40.00th=[ 31851], 50.00th=[ 38011], 60.00th=[ 43779], | 70.00th=[ 52167], 80.00th=[ 62129], 90.00th=[ 78119], 95.00th=[ 94897], | 99.00th=[139461], 99.50th=[166724], 99.90th=[278922], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 7, max= 111, per=25.41%, avg=49.80, stdev=19.93, samples=236 iops : min= 1, max= 27, avg=11.81, stdev= 5.00, samples=236 write: IOPS=13, BW=52.4KiB/s (53.6kB/s)(6260KiB/119502msec); 0 zone resets clat (usec): min=1089, max=587439, avg=34315.67, stdev=37981.16 lat (usec): min=1090, max=587440, avg=34320.16, stdev=37982.08 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1352], 10.00th=[ 1811], 20.00th=[ 3621], | 30.00th=[ 7046], 40.00th=[ 16319], 50.00th=[ 24511], 60.00th=[ 32637], | 70.00th=[ 42206], 80.00th=[ 57934], 90.00th=[ 83362], 95.00th=[103285], | 99.00th=[160433], 99.50th=[185598], 99.90th=[250610], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 15, max= 127, per=25.08%, avg=51.67, stdev=21.83, samples=236 iops : min= 3, max= 31, avg=12.28, stdev= 5.50, samples=236 lat (usec) : 50=0.49%, 100=1.60%, 250=0.26%, 500=0.03%, 1000=0.03% lat (msec) : 2=5.83%, 4=5.11%, 10=7.06%, 20=9.99%, 50=40.53% lat (msec) : 100=24.15%, 250=4.79%, 500=0.10%, 750=0.03% cpu : usr=0.06%, sys=5.13%, ctx=6487, 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=179789: Mon Aug 3 08:50:38 2026 read: IOPS=12, BW=49.6KiB/s (50.8kB/s)(6052KiB/122024msec) clat (usec): min=35, max=633055, avg=44811.78, stdev=34211.72 lat (usec): min=35, max=633056, avg=44814.56, stdev=34211.94 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 8356], 10.00th=[ 16450], 20.00th=[ 21890], | 30.00th=[ 27132], 40.00th=[ 33162], 50.00th=[ 38011], 60.00th=[ 44827], | 70.00th=[ 52691], 80.00th=[ 64750], 90.00th=[ 77071], 95.00th=[ 94897], | 99.00th=[158335], 99.50th=[179307], 99.90th=[295699], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 7, max= 95, per=25.04%, avg=49.08, stdev=18.10, samples=241 iops : min= 1, max= 23, avg=11.63, stdev= 4.55, samples=241 write: IOPS=12, BW=51.1KiB/s (52.3kB/s)(6236KiB/122024msec); 0 zone resets clat (usec): min=1073, max=262429, avg=34552.41, stdev=35501.43 lat (usec): min=1074, max=262430, avg=34554.13, stdev=35501.36 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1385], 10.00th=[ 2073], 20.00th=[ 4293], | 30.00th=[ 7373], 40.00th=[ 15008], 50.00th=[ 25297], 60.00th=[ 34341], | 70.00th=[ 45351], 80.00th=[ 58459], 90.00th=[ 83362], 95.00th=[106431], | 99.00th=[145753], 99.50th=[170918], 99.90th=[250610], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 7, max= 103, per=24.54%, avg=50.56, stdev=20.98, samples=241 iops : min= 1, max= 25, avg=12.00, stdev= 5.26, samples=241 lat (usec) : 50=0.75%, 100=1.33%, 250=0.10% lat (msec) : 2=4.92%, 4=4.69%, 10=8.11%, 20=10.38%, 50=40.14% lat (msec) : 100=24.51%, 250=4.85%, 500=0.20%, 750=0.03% cpu : usr=0.07%, sys=5.06%, ctx=6574, 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=197KiB/s (202kB/s), 49.2KiB/s-50.4KiB/s (50.4kB/s-51.7kB/s), io=23.4MiB (24.6MB), run=118730-122024msec WRITE: bw=206KiB/s (211kB/s), 51.1KiB/s-53.5KiB/s (52.3kB/s-54.7kB/s), io=24.6MiB (25.7MB), run=118730-122024msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179791: Mon Aug 3 08:51:24 2026 read: IOPS=8, BW=35.8KiB/s (36.7kB/s)(5992KiB/167387msec) clat (msec): min=5, max=666, avg=44.95, stdev=42.97 lat (msec): min=5, max=666, avg=44.95, stdev=42.98 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 65], 90.00th=[ 95], 95.00th=[ 131], | 99.00th=[ 209], 99.50th=[ 230], 99.90th=[ 330], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 5, max= 133, per=25.10%, avg=35.89, stdev=23.84, samples=325 iops : min= 1, max= 33, avg= 8.31, stdev= 6.00, samples=325 write: IOPS=9, BW=37.6KiB/s (38.5kB/s)(6296KiB/167387msec); 0 zone resets clat (msec): min=10, max=331, avg=63.49, stdev=42.88 lat (msec): min=10, max=331, avg=63.49, stdev=42.88 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 51], 60.00th=[ 61], | 70.00th=[ 72], 80.00th=[ 92], 90.00th=[ 122], 95.00th=[ 148], | 99.00th=[ 211], 99.50th=[ 247], 99.90th=[ 321], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 120, per=24.97%, avg=37.46, stdev=22.41, samples=327 iops : min= 1, max= 30, avg= 8.70, stdev= 5.65, samples=327 lat (msec) : 10=1.82%, 20=13.51%, 50=45.02%, 100=26.50%, 250=12.76% lat (msec) : 500=0.36%, 750=0.03% cpu : usr=0.05%, sys=1.94%, ctx=4925, 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=179792: Mon Aug 3 08:51:24 2026 read: IOPS=8, BW=35.8KiB/s (36.7kB/s)(5940KiB/165810msec) clat (msec): min=5, max=669, avg=42.93, stdev=41.49 lat (msec): min=5, max=669, avg=42.93, stdev=41.49 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 58], 90.00th=[ 91], 95.00th=[ 128], | 99.00th=[ 203], 99.50th=[ 230], 99.90th=[ 305], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 5, max= 127, per=25.28%, avg=36.15, stdev=24.15, samples=320 iops : min= 1, max= 31, avg= 8.37, stdev= 6.06, samples=320 write: IOPS=9, BW=38.3KiB/s (39.2kB/s)(6348KiB/165810msec); 0 zone resets clat (msec): min=11, max=342, avg=64.23, stdev=42.32 lat (msec): min=11, max=342, avg=64.23, stdev=42.32 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 62], | 70.00th=[ 74], 80.00th=[ 93], 90.00th=[ 123], 95.00th=[ 146], | 99.00th=[ 213], 99.50th=[ 228], 99.90th=[ 330], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 5, max= 126, per=25.21%, avg=37.81, stdev=21.71, samples=327 iops : min= 1, max= 31, avg= 8.79, stdev= 5.46, samples=327 lat (msec) : 10=2.21%, 20=12.79%, 50=46.03%, 100=26.11%, 250=12.50% lat (msec) : 500=0.33%, 750=0.03% cpu : usr=0.05%, sys=1.99%, ctx=5056, 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=179793: Mon Aug 3 08:51:24 2026 read: IOPS=9, BW=36.1KiB/s (37.0kB/s)(6028KiB/166804msec) clat (msec): min=5, max=254, avg=44.82, stdev=37.74 lat (msec): min=5, max=254, avg=44.82, stdev=37.74 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 65], 90.00th=[ 100], 95.00th=[ 128], | 99.00th=[ 184], 99.50th=[ 209], 99.90th=[ 249], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 7, max= 140, per=25.18%, avg=36.01, stdev=22.54, samples=326 iops : min= 1, max= 35, avg= 8.33, stdev= 5.66, samples=326 write: IOPS=9, BW=37.5KiB/s (38.4kB/s)(6260KiB/166804msec); 0 zone resets clat (msec): min=12, max=698, avg=63.36, stdev=44.68 lat (msec): min=12, max=698, avg=63.36, stdev=44.68 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 50], 60.00th=[ 61], | 70.00th=[ 73], 80.00th=[ 91], 90.00th=[ 120], 95.00th=[ 144], | 99.00th=[ 215], 99.50th=[ 245], 99.90th=[ 326], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 5, max= 119, per=24.93%, avg=37.39, stdev=22.31, samples=326 iops : min= 1, max= 29, avg= 8.68, stdev= 5.61, samples=326 lat (msec) : 10=1.30%, 20=13.12%, 50=46.39%, 100=25.94%, 250=13.02% lat (msec) : 500=0.20%, 750=0.03% cpu : usr=0.06%, sys=1.89%, ctx=4978, 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=179794: Mon Aug 3 08:51:24 2026 read: IOPS=9, BW=36.2KiB/s (37.0kB/s)(6052KiB/167322msec) clat (msec): min=5, max=326, avg=44.43, stdev=39.39 lat (msec): min=5, max=326, avg=44.44, stdev=39.40 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 65], 90.00th=[ 94], 95.00th=[ 129], | 99.00th=[ 194], 99.50th=[ 220], 99.90th=[ 309], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 7, max= 119, per=25.93%, avg=37.08, stdev=23.95, samples=318 iops : min= 1, max= 29, avg= 8.61, stdev= 6.03, samples=318 write: IOPS=9, BW=37.3KiB/s (38.2kB/s)(6236KiB/167322msec); 0 zone resets clat (msec): min=11, max=670, avg=64.12, stdev=47.74 lat (msec): min=11, max=670, avg=64.13, stdev=47.74 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 71], 80.00th=[ 92], 90.00th=[ 121], 95.00th=[ 157], | 99.00th=[ 241], 99.50th=[ 275], 99.90th=[ 347], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 5, max= 111, per=24.77%, avg=37.15, stdev=22.28, samples=327 iops : min= 1, max= 27, avg= 8.62, stdev= 5.60, samples=327 lat (msec) : 10=1.37%, 20=13.93%, 50=46.68%, 100=25.33%, 250=12.14% lat (msec) : 500=0.52%, 750=0.03% cpu : usr=0.04%, sys=1.94%, ctx=5038, 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=143KiB/s (147kB/s), 35.8KiB/s-36.2KiB/s (36.7kB/s-37.0kB/s), io=23.4MiB (24.6MB), run=165810-167387msec WRITE: bw=150KiB/s (154kB/s), 37.3KiB/s-38.3KiB/s (38.2kB/s-39.2kB/s), io=24.6MiB (25.7MB), run=165810-167387msec 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=179835: Mon Aug 3 08:52:02 2026 read: IOPS=13, BW=208KiB/s (213kB/s)(5920KiB/28456msec) clat (usec): min=41, max=161934, avg=40465.53, stdev=26580.95 lat (usec): min=41, max=161935, avg=40466.61, stdev=26580.96 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 59], 10.00th=[ 86], 20.00th=[ 21103], | 30.00th=[ 27919], 40.00th=[ 32375], 50.00th=[ 37487], 60.00th=[ 43779], | 70.00th=[ 50070], 80.00th=[ 58983], 90.00th=[ 72877], 95.00th=[ 89654], | 99.00th=[124257], 99.50th=[147850], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 60, max= 445, per=24.75%, avg=207.20, stdev=75.77, samples=56 iops : min= 3, max= 27, avg=12.27, stdev= 4.75, samples=56 write: IOPS=13, BW=224KiB/s (229kB/s)(6368KiB/28456msec); 0 zone resets clat (usec): min=1468, max=272452, avg=33446.12, stdev=36059.16 lat (usec): min=1469, max=272453, avg=33448.19, stdev=36059.40 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2147], 10.00th=[ 3359], 20.00th=[ 5800], | 30.00th=[ 8848], 40.00th=[ 13960], 50.00th=[ 21103], 60.00th=[ 30802], | 70.00th=[ 39584], 80.00th=[ 56886], 90.00th=[ 79168], 95.00th=[103285], | 99.00th=[164627], 99.50th=[229639], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 416, per=25.34%, avg=223.04, stdev=83.60, samples=56 iops : min= 1, max= 26, avg=13.27, stdev= 5.28, samples=56 lat (usec) : 50=0.91%, 100=4.04%, 250=0.52%, 1000=0.13% lat (msec) : 2=2.47%, 4=4.69%, 10=10.29%, 20=10.81%, 50=38.67% lat (msec) : 100=23.57%, 250=3.78%, 500=0.13% cpu : usr=0.06%, sys=6.02%, ctx=1600, 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=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=179836: Mon Aug 3 08:52:02 2026 read: IOPS=12, BW=204KiB/s (209kB/s)(5744KiB/28184msec) clat (usec): min=37, max=195098, avg=43000.57, stdev=28811.81 lat (usec): min=37, max=195099, avg=43001.68, stdev=28811.90 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 59], 10.00th=[ 239], 20.00th=[ 21627], | 30.00th=[ 27919], 40.00th=[ 32900], 50.00th=[ 38536], 60.00th=[ 44303], | 70.00th=[ 53740], 80.00th=[ 63701], 90.00th=[ 82314], 95.00th=[ 96994], | 99.00th=[125305], 99.50th=[154141], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 32, max= 377, per=24.21%, avg=202.64, stdev=70.08, samples=55 iops : min= 2, max= 23, avg=12.00, stdev= 4.42, samples=55 write: IOPS=14, BW=232KiB/s (238kB/s)(6544KiB/28184msec); 0 zone resets clat (usec): min=1604, max=241468, avg=30959.21, stdev=32089.78 lat (usec): min=1606, max=241470, avg=30970.72, stdev=32087.25 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2311], 10.00th=[ 3687], 20.00th=[ 5866], | 30.00th=[ 8848], 40.00th=[ 14091], 50.00th=[ 22152], 60.00th=[ 30802], | 70.00th=[ 38536], 80.00th=[ 51643], 90.00th=[ 70779], 95.00th=[ 84411], | 99.00th=[156238], 99.50th=[187696], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 63, max= 448, per=26.28%, avg=231.24, stdev=90.20, samples=55 iops : min= 3, max= 28, avg=13.78, stdev= 5.75, samples=55 lat (usec) : 50=0.78%, 100=3.52%, 250=0.39%, 500=0.13%, 750=0.26% lat (msec) : 2=1.82%, 4=4.17%, 10=11.98%, 20=9.90%, 50=41.15% lat (msec) : 100=22.66%, 250=3.26% cpu : usr=0.07%, sys=6.12%, ctx=1690, 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=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=179837: Mon Aug 3 08:52:02 2026 read: IOPS=13, BW=219KiB/s (224kB/s)(6256KiB/28615msec) clat (usec): min=40, max=179680, avg=40364.37, stdev=29824.89 lat (usec): min=40, max=179682, avg=40365.49, stdev=29824.92 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 58], 10.00th=[ 78], 20.00th=[ 19530], | 30.00th=[ 24511], 40.00th=[ 29754], 50.00th=[ 35390], 60.00th=[ 41681], | 70.00th=[ 50070], 80.00th=[ 57410], 90.00th=[ 79168], 95.00th=[ 99091], | 99.00th=[132645], 99.50th=[177210], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 63, max= 540, per=26.00%, avg=217.59, stdev=83.40, samples=56 iops : min= 3, max= 33, avg=12.93, stdev= 5.27, samples=56 write: IOPS=13, BW=211KiB/s (216kB/s)(6032KiB/28615msec); 0 zone resets clat (usec): min=1510, max=183178, avg=33574.51, stdev=33528.22 lat (usec): min=1512, max=183181, avg=33580.37, stdev=33528.39 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2311], 10.00th=[ 3458], 20.00th=[ 6128], | 30.00th=[ 8717], 40.00th=[ 14091], 50.00th=[ 24511], 60.00th=[ 33162], | 70.00th=[ 40109], 80.00th=[ 58459], 90.00th=[ 84411], 95.00th=[ 94897], | 99.00th=[164627], 99.50th=[181404], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 32, max= 448, per=23.52%, avg=207.02, stdev=91.42, samples=56 iops : min= 2, max= 28, avg=12.25, stdev= 5.82, samples=56 lat (usec) : 50=0.26%, 100=5.34%, 250=0.39%, 500=0.26% lat (msec) : 2=2.08%, 4=4.30%, 10=10.29%, 20=10.29%, 50=39.45% lat (msec) : 100=22.79%, 250=4.56% cpu : usr=0.07%, sys=5.55%, ctx=1655, 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=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=179838: Mon Aug 3 08:52:02 2026 read: IOPS=13, BW=217KiB/s (222kB/s)(6032KiB/27799msec) clat (usec): min=47, max=293587, avg=41785.32, stdev=33362.11 lat (usec): min=47, max=293589, avg=41786.34, stdev=33362.18 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 18744], | 30.00th=[ 25035], 40.00th=[ 30802], 50.00th=[ 37487], 60.00th=[ 44827], | 70.00th=[ 52167], 80.00th=[ 60556], 90.00th=[ 81265], 95.00th=[ 98042], | 99.00th=[158335], 99.50th=[200279], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 31, max= 448, per=25.81%, avg=216.04, stdev=89.81, samples=54 iops : min= 1, max= 28, avg=12.81, stdev= 5.76, samples=54 write: IOPS=14, BW=225KiB/s (230kB/s)(6256KiB/27799msec); 0 zone resets clat (usec): min=1600, max=207601, avg=30256.25, stdev=31602.72 lat (usec): min=1603, max=207603, avg=30263.68, stdev=31610.87 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2073], 10.00th=[ 3032], 20.00th=[ 4752], | 30.00th=[ 6849], 40.00th=[ 10945], 50.00th=[ 19268], 60.00th=[ 27919], | 70.00th=[ 40109], 80.00th=[ 54789], 90.00th=[ 73925], 95.00th=[ 90702], | 99.00th=[137364], 99.50th=[181404], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 63, max= 601, per=25.63%, avg=225.56, stdev=106.09, samples=54 iops : min= 3, max= 37, avg=13.44, stdev= 6.75, samples=54 lat (usec) : 50=0.26%, 100=6.51%, 500=0.13% lat (msec) : 2=2.34%, 4=6.51%, 10=10.94%, 20=9.77%, 50=35.94% lat (msec) : 100=23.44%, 250=4.04%, 500=0.13% cpu : usr=0.06%, sys=6.03%, ctx=1593, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=837KiB/s (857kB/s), 204KiB/s-219KiB/s (209kB/s-224kB/s), io=23.4MiB (24.5MB), run=27799-28615msec WRITE: bw=881KiB/s (902kB/s), 211KiB/s-232KiB/s (216kB/s-238kB/s), io=24.6MiB (25.8MB), run=27799-28615msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179840: Mon Aug 3 08:52:14 2026 read: IOPS=9, BW=149KiB/s (153kB/s)(5920KiB/39741msec) clat (msec): min=7, max=285, avg=41.83, stdev=37.67 lat (msec): min=7, max=285, avg=41.84, stdev=37.67 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 93], 95.00th=[ 123], | 99.00th=[ 199], 99.50th=[ 213], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 30, max= 444, per=24.74%, avg=148.69, stdev=98.97, samples=77 iops : min= 1, max= 27, avg= 8.48, stdev= 6.24, samples=77 write: IOPS=10, BW=160KiB/s (164kB/s)(6368KiB/39741msec); 0 zone resets clat (msec): min=14, max=288, avg=60.74, stdev=43.63 lat (msec): min=14, max=288, avg=60.75, stdev=43.63 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 86], 90.00th=[ 116], 95.00th=[ 150], | 99.00th=[ 236], 99.50th=[ 279], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 62, max= 448, per=25.46%, avg=160.88, stdev=94.42, samples=77 iops : min= 3, max= 28, avg= 9.23, stdev= 5.97, samples=77 lat (msec) : 10=1.56%, 20=14.45%, 50=48.70%, 100=23.83%, 250=10.94% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=2.01%, ctx=1202, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179841: Mon Aug 3 08:52:14 2026 read: IOPS=9, BW=144KiB/s (148kB/s)(5744KiB/39828msec) clat (msec): min=7, max=285, avg=41.35, stdev=37.88 lat (msec): min=7, max=285, avg=41.36, stdev=37.88 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 95], 95.00th=[ 130], | 99.00th=[ 167], 99.50th=[ 205], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 31, max= 507, per=24.67%, avg=148.28, stdev=103.89, samples=75 iops : min= 1, max= 31, avg= 8.45, stdev= 6.57, samples=75 write: IOPS=10, BW=164KiB/s (168kB/s)(6544KiB/39828msec); 0 zone resets clat (msec): min=13, max=226, avg=60.83, stdev=40.13 lat (msec): min=13, max=226, avg=60.83, stdev=40.13 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 31], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 58], | 70.00th=[ 70], 80.00th=[ 90], 90.00th=[ 120], 95.00th=[ 142], | 99.00th=[ 199], 99.50th=[ 207], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 31, max= 443, per=25.50%, avg=161.17, stdev=91.67, samples=78 iops : min= 1, max= 27, avg= 9.26, stdev= 5.79, samples=78 lat (msec) : 10=2.60%, 20=14.71%, 50=46.48%, 100=24.74%, 250=11.33% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.10%, ctx=1280, 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=179842: Mon Aug 3 08:52:14 2026 read: IOPS=9, BW=159KiB/s (162kB/s)(6256KiB/39451msec) clat (msec): min=6, max=282, avg=41.26, stdev=36.22 lat (msec): min=6, max=282, avg=41.26, stdev=36.22 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 42], 80.00th=[ 55], 90.00th=[ 96], 95.00th=[ 125], | 99.00th=[ 150], 99.50th=[ 226], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 416, per=26.82%, avg=161.17, stdev=104.38, samples=75 iops : min= 1, max= 26, avg= 9.25, stdev= 6.61, samples=75 write: IOPS=9, BW=153KiB/s (157kB/s)(6032KiB/39451msec); 0 zone resets clat (msec): min=13, max=241, avg=61.69, stdev=40.76 lat (msec): min=13, max=241, avg=61.70, stdev=40.76 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 48], 60.00th=[ 58], | 70.00th=[ 74], 80.00th=[ 97], 90.00th=[ 122], 95.00th=[ 146], | 99.00th=[ 197], 99.50th=[ 220], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 31, max= 416, per=23.93%, avg=151.26, stdev=92.66, samples=76 iops : min= 1, max= 26, avg= 8.63, stdev= 5.86, samples=76 lat (msec) : 10=0.78%, 20=15.36%, 50=48.44%, 100=21.48%, 250=13.80% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=2.22%, ctx=1305, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179843: Mon Aug 3 08:52:14 2026 read: IOPS=9, BW=155KiB/s (159kB/s)(6032KiB/38886msec) clat (msec): min=6, max=210, avg=41.20, stdev=33.75 lat (msec): min=6, max=210, avg=41.20, stdev=33.75 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 44], 80.00th=[ 59], 90.00th=[ 91], 95.00th=[ 111], | 99.00th=[ 167], 99.50th=[ 207], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 31, max= 479, per=25.53%, avg=153.43, stdev=97.27, samples=76 iops : min= 1, max= 29, avg= 8.76, stdev= 6.10, samples=76 write: IOPS=10, BW=161KiB/s (165kB/s)(6256KiB/38886msec); 0 zone resets clat (msec): min=13, max=228, avg=59.66, stdev=39.36 lat (msec): min=13, max=228, avg=59.66, stdev=39.36 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 40], 50.00th=[ 48], 60.00th=[ 56], | 70.00th=[ 68], 80.00th=[ 87], 90.00th=[ 114], 95.00th=[ 144], | 99.00th=[ 213], 99.50th=[ 220], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 31, max= 509, per=25.86%, avg=163.43, stdev=95.04, samples=74 iops : min= 1, max= 31, avg= 9.39, stdev= 5.99, samples=74 lat (msec) : 10=1.43%, 20=14.84%, 50=48.83%, 100=23.96%, 250=10.94% cpu : usr=0.04%, sys=2.13%, ctx=1208, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=601KiB/s (616kB/s), 144KiB/s-159KiB/s (148kB/s-162kB/s), io=23.4MiB (24.5MB), run=38886-39828msec WRITE: bw=633KiB/s (648kB/s), 153KiB/s-164KiB/s (157kB/s-168kB/s), io=24.6MiB (25.8MB), run=38886-39828msec 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=179855: Mon Aug 3 08:52:29 2026 read: IOPS=1, BW=2038KiB/s (2087kB/s)(7168KiB/3517msec) clat (usec): min=557, max=646467, avg=227982.27, stdev=233611.13 lat (usec): min=558, max=646468, avg=227983.56, stdev=233611.24 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 2212], | 30.00th=[ 79168], 40.00th=[ 79168], 50.00th=[231736], 60.00th=[242222], | 70.00th=[242222], 80.00th=[392168], 90.00th=[650118], 95.00th=[650118], | 99.00th=[650118], 99.50th=[650118], 99.90th=[650118], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 1546, max= 4096, per=58.49%, avg=2345.00, stdev=1001.01, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 write: IOPS=1, BW=1456KiB/s (1491kB/s)(5120KiB/3517msec); 0 zone resets clat (msec): min=86, max=958, avg=345.52, stdev=356.85 lat (msec): min=86, max=958, avg=345.89, stdev=357.13 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 87], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 205], 60.00th=[ 205], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 1996, max= 4096, per=48.34%, avg=2713.33, stdev=1197.71, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 100=16.67%, 250=33.33%, 500=16.67%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.00%, sys=12.43%, ctx=184, 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=179856: Mon Aug 3 08:52:29 2026 read: IOPS=0, BW=401KiB/s (411kB/s)(2048KiB/5108msec) clat (usec): min=628, max=2123.4k, avg=1062021.32, stdev=1501035.70 lat (usec): min=629, max=2123.4k, avg=1062023.50, stdev=1501037.27 clat percentiles (usec): | 1.00th=[ 627], 5.00th=[ 627], 10.00th=[ 627], | 20.00th=[ 627], 30.00th=[ 627], 40.00th=[ 627], | 50.00th=[ 627], 60.00th=[2122318], 70.00th=[2122318], | 80.00th=[2122318], 90.00th=[2122318], 95.00th=[2122318], | 99.00th=[2122318], 99.50th=[2122318], 99.90th=[2122318], | 99.95th=[2122318], 99.99th=[2122318] bw ( KiB/s): min= 2027, max= 2048, per=50.82%, avg=2037.50, stdev=14.85, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=2005KiB/s (2053kB/s)(10.0MiB/5108msec); 0 zone resets clat (msec): min=144, max=707, avg=278.81, stdev=158.88 lat (msec): min=145, max=707, avg=278.90, stdev=158.87 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 180], | 30.00th=[ 205], 40.00th=[ 230], 50.00th=[ 239], 60.00th=[ 243], | 70.00th=[ 247], 80.00th=[ 259], 90.00th=[ 338], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 2048, max= 4087, per=63.17%, avg=3545.50, stdev=999.11, samples=4 iops : min= 2, max= 3, avg= 2.75, stdev= 0.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=58.33%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=13.12%, ctx=241, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179857: Mon Aug 3 08:52:29 2026 read: IOPS=2, BW=2295KiB/s (2350kB/s)(6144KiB/2677msec) clat (usec): min=490, max=678048, avg=170313.44, stdev=262415.17 lat (usec): min=491, max=678049, avg=170314.40, stdev=262414.90 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 529], | 30.00th=[ 529], 40.00th=[ 529], 50.00th=[ 529], 60.00th=[168821], | 70.00th=[175113], 80.00th=[175113], 90.00th=[675283], 95.00th=[675283], | 99.00th=[675283], 99.50th=[675283], 99.90th=[675283], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 2048, max= 4096, per=85.14%, avg=3413.33, stdev=1182.41, samples=3 iops : min= 2, max= 4, avg= 3.33, stdev= 1.15, samples=3 write: IOPS=2, BW=2295KiB/s (2350kB/s)(6144KiB/2677msec); 0 zone resets clat (msec): min=73, max=444, avg=249.97, stdev=124.79 lat (msec): min=73, max=444, avg=250.04, stdev=124.81 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 218], 50.00th=[ 218], 60.00th=[ 266], | 70.00th=[ 309], 80.00th=[ 309], 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= 1577, max= 4079, per=43.43%, avg=2438.00, stdev=1116.30, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=14.16%, ctx=115, 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=179858: Mon Aug 3 08:52:29 2026 read: IOPS=1, BW=1443KiB/s (1477kB/s)(5120KiB/3549msec) clat (usec): min=335, max=731993, avg=231453.08, stdev=299868.78 lat (usec): min=335, max=731995, avg=231454.24, stdev=299869.07 clat percentiles (usec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 709], 40.00th=[ 709], 50.00th=[183501], 60.00th=[183501], | 70.00th=[242222], 80.00th=[242222], 90.00th=[734004], 95.00th=[734004], | 99.00th=[734004], 99.50th=[734004], 99.90th=[734004], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 2048, max= 6144, per=100.00%, avg=4096.00, stdev=2896.31, samples=2 iops : min= 2, max= 6, avg= 4.00, stdev= 2.83, samples=2 write: IOPS=1, BW=2020KiB/s (2068kB/s)(7168KiB/3549msec); 0 zone resets clat (msec): min=179, max=665, avg=337.91, stdev=176.63 lat (msec): min=179, max=665, avg=337.98, stdev=176.62 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 330], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 447], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1620, max= 4096, per=52.32%, avg=2936.75, stdev=1290.63, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=12.54%, ctx=254, 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=4009KiB/s (4106kB/s), 401KiB/s-2295KiB/s (411kB/s-2350kB/s), io=20.0MiB (20.0MB), run=2677-5108msec WRITE: bw=5613KiB/s (5748kB/s), 1456KiB/s-2295KiB/s (1491kB/s-2350kB/s), io=28.0MiB (29.4MB), run=2677-5108msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179860: Mon Aug 3 08:52:30 2026 read: IOPS=1, BW=1439KiB/s (1474kB/s)(7168KiB/4980msec) clat (msec): min=112, max=628, avg=253.28, stdev=196.85 lat (msec): min=112, max=628, avg=253.28, stdev=196.85 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 132], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 140], 60.00th=[ 203], | 70.00th=[ 203], 80.00th=[ 422], 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= 1549, max= 4047, per=61.02%, avg=2319.40, stdev=985.83, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1028KiB/s (1053kB/s)(5120KiB/4980msec); 0 zone resets clat (msec): min=165, max=2066, avg=602.64, stdev=821.23 lat (msec): min=165, max=2066, avg=603.83, stdev=820.49 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 317], 80.00th=[ 317], 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= 1961, max= 4096, per=50.41%, avg=2683.00, stdev=1223.79, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 250=58.33%, 500=25.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=2.35%, ctx=67, 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=179861: Mon Aug 3 08:52:30 2026 read: IOPS=0, BW=380KiB/s (389kB/s)(2048KiB/5387msec) clat (msec): min=122, max=1958, avg=1040.42, stdev=1297.87 lat (msec): min=122, max=1958, avg=1040.42, stdev=1297.87 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 124], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 1955], | 70.00th=[ 1955], 80.00th=[ 1955], 90.00th=[ 1955], 95.00th=[ 1955], | 99.00th=[ 1955], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 2023, max= 2043, per=53.49%, avg=2033.00, stdev=14.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1901KiB/s (1946kB/s)(10.0MiB/5387msec); 0 zone resets clat (msec): min=68, max=755, avg=279.77, stdev=210.53 lat (msec): min=68, max=755, avg=279.87, stdev=210.55 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 92], | 30.00th=[ 94], 40.00th=[ 188], 50.00th=[ 209], 60.00th=[ 228], | 70.00th=[ 330], 80.00th=[ 397], 90.00th=[ 439], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 1961, max= 6071, per=75.69%, avg=4028.00, stdev=1678.58, samples=4 iops : min= 1, max= 5, avg= 3.25, stdev= 1.71, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 500=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=6.61%, ctx=151, 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=179862: Mon Aug 3 08:52:30 2026 read: IOPS=1, BW=1241KiB/s (1271kB/s)(6144KiB/4950msec) clat (msec): min=141, max=340, avg=229.01, stdev=77.18 lat (msec): min=141, max=340, avg=229.01, stdev=77.18 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 199], 50.00th=[ 199], 60.00th=[ 253], | 70.00th=[ 284], 80.00th=[ 284], 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= 1992, max= 4096, per=87.79%, avg=3337.00, stdev=1168.01, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1241KiB/s (1271kB/s)(6144KiB/4950msec); 0 zone resets clat (msec): min=113, max=1987, avg=509.18, stdev=728.47 lat (msec): min=113, max=1987, avg=509.25, stdev=728.47 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 226], 50.00th=[ 226], 60.00th=[ 245], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 1961, max= 4087, per=47.63%, avg=2534.75, stdev=1035.60, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 250=58.33%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=4.34%, ctx=93, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179863: Mon Aug 3 08:52:30 2026 read: IOPS=1, BW=1164KiB/s (1192kB/s)(5120KiB/4400msec) clat (msec): min=61, max=191, avg=122.96, stdev=48.44 lat (msec): min=61, max=191, avg=122.96, stdev=48.44 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 62], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 127], 60.00th=[ 127], | 70.00th=[ 138], 80.00th=[ 138], 90.00th=[ 192], 95.00th=[ 192], | 99.00th=[ 192], 99.50th=[ 192], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 3923, max= 3984, per=100.00%, avg=3953.50, stdev=43.13, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1629KiB/s (1668kB/s)(7168KiB/4400msec); 0 zone resets clat (msec): min=96, max=1290, avg=502.12, stdev=419.15 lat (msec): min=96, max=1290, avg=502.21, stdev=419.14 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 171], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 426], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 735], 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= 1961, max= 2043, per=37.81%, avg=2012.40, stdev=35.51, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=25.00%, 250=41.67%, 500=8.33%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=4.05%, ctx=81, 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=3802KiB/s (3893kB/s), 380KiB/s-1439KiB/s (389kB/s-1474kB/s), io=20.0MiB (20.0MB), run=4400-5387msec WRITE: bw=5322KiB/s (5450kB/s), 1028KiB/s-1901KiB/s (1053kB/s-1946kB/s), io=28.0MiB (29.4MB), run=4400-5387msec 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=179871: Mon Aug 3 08:52:43 2026 read: IOPS=1, BW=4164KiB/s (4264kB/s)(12.0MiB/2951msec) clat (msec): min=749, max=1007, avg=910.73, stdev=140.85 lat (msec): min=749, max=1007, avg=910.73, stdev=140.85 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 8047, max= 8159, per=100.00%, avg=8103.00, stdev=79.20, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.76%, ctx=50, 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=179872: Mon Aug 3 08:52:43 2026 read: IOPS=0, BW=3001KiB/s (3073kB/s)(4096KiB/1365msec) clat (nsec): min=247829k, max=247829k, avg=247828667.00, stdev= 0.00 lat (nsec): min=247831k, max=247831k, avg=247830927.00, stdev= 0.00 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=[ 249], | 70.00th=[ 249], 80.00th=[ 249], 90.00th=[ 249], 95.00th=[ 249], | 99.00th=[ 249], 99.50th=[ 249], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 7557, max= 7557, per=100.00%, avg=7557.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=6001KiB/s (6146kB/s)(8192KiB/1365msec); 0 zone resets clat (msec): min=278, max=769, avg=523.88, stdev=346.82 lat (msec): min=279, max=769, avg=524.69, stdev=346.87 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=8.36%, ctx=41, 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=179873: Mon Aug 3 08:52:43 2026 write: IOPS=0, BW=3529KiB/s (3614kB/s)(12.0MiB/3482msec); 0 zone resets clat (msec): min=319, max=2131, avg=1113.71, stdev=926.43 lat (msec): min=320, max=2132, avg=1114.33, stdev=926.49 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 894], | 70.00th=[ 2140], 80.00th=[ 2140], 90.00th=[ 2140], 95.00th=[ 2140], | 99.00th=[ 2140], 99.50th=[ 2140], 99.90th=[ 2140], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 8094, max= 8094, per=87.69%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.13%, ctx=62, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179874: Mon Aug 3 08:52:43 2026 write: IOPS=0, BW=3461KiB/s (3544kB/s)(12.0MiB/3550msec); 0 zone resets clat (msec): min=270, max=2383, avg=1165.16, stdev=1093.21 lat (msec): min=271, max=2384, avg=1165.89, stdev=1093.04 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 2400], 80.00th=[ 2400], 90.00th=[ 2400], 95.00th=[ 2400], | 99.00th=[ 2400], 99.50th=[ 2400], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 8047, max= 8159, per=87.79%, avg=8103.00, 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=2.85%, 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 Run status group 0 (all jobs): READ: bw=5552KiB/s (5685kB/s), 3001KiB/s-4164KiB/s (3073kB/s-4264kB/s), io=16.0MiB (16.8MB), run=1365-2951msec WRITE: bw=9230KiB/s (9452kB/s), 3461KiB/s-6001KiB/s (3544kB/s-6146kB/s), io=32.0MiB (33.6MB), run=1365-3550msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179875: Mon Aug 3 08:52:43 2026 read: IOPS=1, BW=4362KiB/s (4467kB/s)(12.0MiB/2817msec) clat (msec): min=749, max=967, avg=879.70, stdev=114.70 lat (msec): min=749, max=967, avg=879.70, stdev=114.70 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7787, max= 8159, per=100.00%, avg=7973.00, stdev=263.04, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=14.10%, ctx=421, 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=179876: Mon Aug 3 08:52:43 2026 read: IOPS=0, BW=1526KiB/s (1562kB/s)(4096KiB/2685msec) clat (nsec): min=856269k, max=856269k, avg=856268645.00, stdev= 0.00 lat (nsec): min=856271k, max=856271k, avg=856270845.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7787, max= 7787, per=100.00%, avg=7787.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3051KiB/s (3124kB/s)(8192KiB/2685msec); 0 zone resets clat (msec): min=242, max=1325, avg=783.81, stdev=765.43 lat (msec): min=242, max=1325, avg=784.23, stdev=765.50 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 1318], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7787, max= 7787, per=85.72%, avg=7787.00, 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=6.52%, ctx=114, 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=179877: Mon Aug 3 08:52:43 2026 write: IOPS=0, BW=3407KiB/s (3488kB/s)(12.0MiB/3607msec); 0 zone resets clat (msec): min=152, max=2443, avg=1120.71, stdev=1185.93 lat (msec): min=153, max=2445, avg=1121.47, stdev=1186.62 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 2433], 80.00th=[ 2433], 90.00th=[ 2433], 95.00th=[ 2433], | 99.00th=[ 2433], 99.50th=[ 2433], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 8126, max= 8126, per=89.45%, 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%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.22%, ctx=54, 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=179878: Mon Aug 3 08:52:43 2026 write: IOPS=0, BW=3865KiB/s (3958kB/s)(12.0MiB/3179msec); 0 zone resets clat (msec): min=201, max=2255, avg=1043.25, stdev=1076.36 lat (msec): min=201, max=2256, avg=1043.75, stdev=1076.69 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 2265], 80.00th=[ 2265], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 6168, max= 8143, per=78.77%, avg=7155.50, stdev=1396.54, 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=3.65%, ctx=59, 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=5816KiB/s (5956kB/s), 1526KiB/s-4362KiB/s (1562kB/s-4467kB/s), io=16.0MiB (16.8MB), run=2685-2817msec WRITE: bw=9085KiB/s (9303kB/s), 3051KiB/s-3865KiB/s (3124kB/s-3958kB/s), io=32.0MiB (33.6MB), run=2685-3607msec