== sanity test 398b: DIO and buffer IO race ============== 22:41:34 (1781232094) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.53188 s, 9.1 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=179316: Thu Jun 11 22:44:05 2026 read: IOPS=11, BW=45.4KiB/s (46.5kB/s)(5992KiB/131974msec) clat (usec): min=45, max=619436, avg=49101.35, stdev=35714.94 lat (usec): min=46, max=619438, avg=49114.22, stdev=35729.19 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 11469], 10.00th=[ 17433], 20.00th=[ 24773], | 30.00th=[ 30278], 40.00th=[ 36439], 50.00th=[ 42730], 60.00th=[ 49546], | 70.00th=[ 56361], 80.00th=[ 68682], 90.00th=[ 86508], 95.00th=[106431], | 99.00th=[175113], 99.50th=[200279], 99.90th=[295699], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 7, max= 111, per=25.34%, avg=45.10, stdev=17.52, samples=259 iops : min= 1, max= 27, avg=10.63, stdev= 4.44, samples=259 write: IOPS=11, BW=47.7KiB/s (48.9kB/s)(6296KiB/131974msec); 0 zone resets clat (usec): min=1084, max=359497, avg=36823.40, stdev=39070.66 lat (usec): min=1086, max=359498, avg=36830.19, stdev=39067.92 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1401], 10.00th=[ 2040], 20.00th=[ 4424], | 30.00th=[ 8717], 40.00th=[ 17171], 50.00th=[ 26870], 60.00th=[ 35914], | 70.00th=[ 45876], 80.00th=[ 61604], 90.00th=[ 87557], 95.00th=[109577], | 99.00th=[175113], 99.50th=[221250], 99.90th=[308282], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 7, max= 127, per=25.38%, avg=47.20, stdev=20.02, samples=260 iops : min= 1, max= 31, avg=11.16, stdev= 5.02, samples=260 lat (usec) : 50=0.13%, 100=1.56%, 250=0.13%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=4.98%, 4=4.75%, 10=6.77%, 20=9.90%, 50=38.70% lat (msec) : 100=26.33%, 250=6.41%, 500=0.20%, 750=0.03% cpu : usr=0.09%, sys=5.34%, ctx=6639, 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=179317: Thu Jun 11 22:44:05 2026 read: IOPS=11, BW=44.1KiB/s (45.2kB/s)(5940KiB/134648msec) clat (usec): min=34, max=712558, avg=49040.04, stdev=35735.28 lat (usec): min=34, max=712560, avg=49042.22, stdev=35734.96 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 12387], 10.00th=[ 19006], 20.00th=[ 25560], | 30.00th=[ 31327], 40.00th=[ 36439], 50.00th=[ 42206], 60.00th=[ 49546], | 70.00th=[ 57410], 80.00th=[ 67634], 90.00th=[ 84411], 95.00th=[105382], | 99.00th=[149947], 99.50th=[181404], 99.90th=[346031], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 87, per=24.45%, avg=43.53, stdev=17.05, samples=265 iops : min= 1, max= 21, avg=10.25, stdev= 4.32, samples=265 write: IOPS=11, BW=47.1KiB/s (48.3kB/s)(6348KiB/134648msec); 0 zone resets clat (usec): min=1068, max=268061, avg=38635.76, stdev=39232.61 lat (usec): min=1068, max=268063, avg=38640.97, stdev=39239.50 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1369], 10.00th=[ 1991], 20.00th=[ 4228], | 30.00th=[ 8586], 40.00th=[ 18744], 50.00th=[ 28705], 60.00th=[ 38011], | 70.00th=[ 50070], 80.00th=[ 66847], 90.00th=[ 92799], 95.00th=[111674], | 99.00th=[160433], 99.50th=[187696], 99.90th=[261096], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 7, max= 110, per=25.14%, avg=46.75, stdev=21.17, samples=263 iops : min= 1, max= 27, avg=11.05, stdev= 5.33, samples=263 lat (usec) : 50=0.26%, 100=1.30%, 250=0.20%, 500=0.03%, 1000=0.03% lat (msec) : 2=5.18%, 4=4.65%, 10=6.90%, 20=8.30%, 50=38.57% lat (msec) : 100=27.60%, 250=6.80%, 500=0.13%, 750=0.03% cpu : usr=0.07%, sys=5.37%, ctx=6856, 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=179318: Thu Jun 11 22:44:05 2026 read: IOPS=11, BW=45.9KiB/s (47.0kB/s)(6028KiB/131219msec) clat (usec): min=36, max=637537, avg=48379.29, stdev=36934.50 lat (usec): min=36, max=637538, avg=48397.32, stdev=36937.01 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 11207], 10.00th=[ 17695], 20.00th=[ 23462], | 30.00th=[ 28967], 40.00th=[ 33817], 50.00th=[ 40633], 60.00th=[ 47973], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[110625], | 99.00th=[173016], 99.50th=[219153], 99.90th=[287310], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 7, max= 104, per=25.57%, avg=45.51, stdev=18.77, samples=258 iops : min= 1, max= 26, avg=10.73, stdev= 4.74, samples=258 write: IOPS=11, BW=47.7KiB/s (48.9kB/s)(6260KiB/131219msec); 0 zone resets clat (usec): min=1061, max=273372, avg=36964.53, stdev=39475.71 lat (usec): min=1063, max=273374, avg=36973.70, stdev=39477.13 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1385], 10.00th=[ 2114], 20.00th=[ 4228], | 30.00th=[ 7963], 40.00th=[ 14877], 50.00th=[ 24773], 60.00th=[ 33817], | 70.00th=[ 46924], 80.00th=[ 64226], 90.00th=[ 91751], 95.00th=[120062], | 99.00th=[168821], 99.50th=[189793], 99.90th=[246416], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 7, max= 119, per=25.47%, avg=47.38, stdev=21.26, samples=257 iops : min= 1, max= 29, avg=11.20, stdev= 5.34, samples=257 lat (usec) : 50=0.29%, 100=1.53%, 250=0.23%, 500=0.07% lat (msec) : 2=4.95%, 4=4.95%, 10=7.45%, 20=10.12%, 50=37.76% lat (msec) : 100=25.20%, 250=7.32%, 500=0.10%, 750=0.03% cpu : usr=0.08%, sys=5.39%, ctx=6618, 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=179319: Thu Jun 11 22:44:05 2026 read: IOPS=11, BW=45.2KiB/s (46.3kB/s)(6052KiB/133896msec) clat (usec): min=48, max=690999, avg=48819.83, stdev=36140.16 lat (usec): min=49, max=691000, avg=48821.23, stdev=36140.18 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 13042], 10.00th=[ 18482], 20.00th=[ 24511], | 30.00th=[ 30540], 40.00th=[ 35390], 50.00th=[ 41681], 60.00th=[ 49021], | 70.00th=[ 57410], 80.00th=[ 66847], 90.00th=[ 86508], 95.00th=[108528], | 99.00th=[162530], 99.50th=[200279], 99.90th=[325059], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 7, max= 110, per=25.33%, avg=45.08, stdev=18.92, samples=262 iops : min= 1, max= 27, avg=10.63, stdev= 4.78, samples=262 write: IOPS=11, BW=46.6KiB/s (47.7kB/s)(6236KiB/133896msec); 0 zone resets clat (usec): min=984, max=418646, avg=38236.63, stdev=40565.77 lat (usec): min=985, max=418648, avg=38239.32, stdev=40565.39 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1467], 10.00th=[ 2343], 20.00th=[ 5145], | 30.00th=[ 8979], 40.00th=[ 17957], 50.00th=[ 26608], 60.00th=[ 35914], | 70.00th=[ 47449], 80.00th=[ 64750], 90.00th=[ 91751], 95.00th=[119014], | 99.00th=[187696], 99.50th=[200279], 99.90th=[267387], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 7, max= 136, per=24.97%, avg=46.44, stdev=20.83, samples=262 iops : min= 1, max= 34, avg=10.97, stdev= 5.27, samples=262 lat (usec) : 50=0.13%, 100=1.50%, 250=0.23%, 500=0.07%, 1000=0.03% lat (msec) : 2=4.43%, 4=3.81%, 10=7.68%, 20=9.83%, 50=38.80% lat (msec) : 100=26.73%, 250=6.58%, 500=0.16%, 750=0.03% cpu : usr=0.06%, sys=5.30%, ctx=6813, 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=178KiB/s (183kB/s), 44.1KiB/s-45.9KiB/s (45.2kB/s-47.0kB/s), io=23.4MiB (24.6MB), run=131219-134648msec WRITE: bw=187KiB/s (191kB/s), 46.6KiB/s-47.7KiB/s (47.7kB/s-48.9kB/s), io=24.6MiB (25.7MB), run=131219-134648msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179321: Thu Jun 11 22:44:49 2026 read: IOPS=8, BW=33.8KiB/s (34.6kB/s)(5992KiB/177430msec) clat (msec): min=5, max=662, avg=46.28, stdev=47.69 lat (msec): min=5, max=662, avg=46.29, stdev=47.69 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 67], 90.00th=[ 101], 95.00th=[ 134], | 99.00th=[ 228], 99.50th=[ 271], 99.90th=[ 485], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7, max= 126, per=26.08%, avg=35.21, stdev=23.90, samples=330 iops : min= 1, max= 31, avg= 8.14, stdev= 6.01, samples=330 write: IOPS=8, BW=35.5KiB/s (36.3kB/s)(6296KiB/177430msec); 0 zone resets clat (msec): min=14, max=376, avg=68.59, stdev=48.96 lat (msec): min=14, max=376, avg=68.60, stdev=48.97 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 52], 60.00th=[ 63], | 70.00th=[ 78], 80.00th=[ 99], 90.00th=[ 136], 95.00th=[ 169], | 99.00th=[ 243], 99.50th=[ 271], 99.90th=[ 309], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 112, per=25.21%, avg=35.55, stdev=22.10, samples=343 iops : min= 1, max= 28, avg= 8.23, stdev= 5.58, samples=343 lat (msec) : 10=1.89%, 20=13.25%, 50=44.95%, 100=25.13%, 250=14.03% lat (msec) : 500=0.72%, 750=0.03% cpu : usr=0.05%, sys=2.02%, ctx=4983, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179322: Thu Jun 11 22:44:49 2026 read: IOPS=8, BW=33.4KiB/s (34.2kB/s)(5940KiB/177721msec) clat (msec): min=6, max=693, avg=45.31, stdev=46.70 lat (msec): min=6, max=693, avg=45.31, stdev=46.70 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 63], 90.00th=[ 101], 95.00th=[ 136], | 99.00th=[ 226], 99.50th=[ 247], 99.90th=[ 464], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 135, per=25.40%, avg=34.29, stdev=23.61, samples=336 iops : min= 1, max= 33, avg= 7.91, stdev= 5.94, samples=336 write: IOPS=8, BW=35.7KiB/s (36.6kB/s)(6348KiB/177721msec); 0 zone resets clat (msec): min=11, max=439, avg=69.51, stdev=48.31 lat (msec): min=11, max=439, avg=69.51, stdev=48.31 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 81], 80.00th=[ 102], 90.00th=[ 136], 95.00th=[ 163], | 99.00th=[ 247], 99.50th=[ 268], 99.90th=[ 380], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 7, max= 112, per=25.29%, avg=35.66, stdev=21.96, samples=346 iops : min= 1, max= 28, avg= 8.25, stdev= 5.53, samples=346 lat (msec) : 10=1.50%, 20=12.79%, 50=44.99%, 100=25.26%, 250=14.88% lat (msec) : 500=0.55%, 750=0.03% cpu : usr=0.06%, sys=2.06%, ctx=5021, 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=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=179323: Thu Jun 11 22:44:49 2026 read: IOPS=8, BW=33.9KiB/s (34.7kB/s)(6028KiB/177848msec) clat (msec): min=6, max=354, avg=46.84, stdev=44.18 lat (msec): min=6, max=354, avg=46.84, stdev=44.18 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 68], 90.00th=[ 108], 95.00th=[ 142], | 99.00th=[ 220], 99.50th=[ 236], 99.90th=[ 300], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 7, max= 118, per=25.46%, avg=34.37, stdev=23.26, samples=340 iops : min= 1, max= 29, avg= 7.93, stdev= 5.85, samples=340 write: IOPS=8, BW=35.2KiB/s (36.0kB/s)(6260KiB/177848msec); 0 zone resets clat (msec): min=12, max=719, avg=68.43, stdev=51.89 lat (msec): min=12, max=719, avg=68.43, stdev=51.89 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 63], | 70.00th=[ 79], 80.00th=[ 99], 90.00th=[ 130], 95.00th=[ 163], | 99.00th=[ 257], 99.50th=[ 309], 99.90th=[ 464], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 120, per=24.88%, avg=35.08, stdev=23.04, samples=346 iops : min= 1, max= 30, avg= 8.11, stdev= 5.80, samples=346 lat (msec) : 10=1.46%, 20=13.18%, 50=45.61%, 100=23.99%, 250=15.04% lat (msec) : 500=0.68%, 750=0.03% cpu : usr=0.05%, sys=2.07%, ctx=5012, 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=179324: Thu Jun 11 22:44:49 2026 read: IOPS=8, BW=34.2KiB/s (35.0kB/s)(6052KiB/176978msec) clat (msec): min=5, max=358, avg=45.76, stdev=41.14 lat (msec): min=5, max=358, avg=45.76, stdev=41.14 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 48], 80.00th=[ 66], 90.00th=[ 103], 95.00th=[ 136], | 99.00th=[ 197], 99.50th=[ 224], 99.90th=[ 284], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 143, per=26.04%, avg=35.15, stdev=23.45, samples=334 iops : min= 1, max= 35, avg= 8.13, stdev= 5.91, samples=334 write: IOPS=8, BW=35.2KiB/s (36.1kB/s)(6236KiB/176978msec); 0 zone resets clat (msec): min=9, max=684, avg=69.03, stdev=51.57 lat (msec): min=9, max=684, avg=69.03, stdev=51.57 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 64], | 70.00th=[ 79], 80.00th=[ 100], 90.00th=[ 133], 95.00th=[ 163], | 99.00th=[ 253], 99.50th=[ 292], 99.90th=[ 472], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 112, per=24.93%, avg=35.15, stdev=21.88, samples=344 iops : min= 1, max= 28, avg= 8.12, stdev= 5.51, samples=344 lat (msec) : 10=1.27%, 20=13.54%, 50=44.34%, 100=25.72%, 250=14.42% lat (msec) : 500=0.68%, 750=0.03% cpu : usr=0.05%, sys=2.09%, ctx=5104, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=135KiB/s (138kB/s), 33.4KiB/s-34.2KiB/s (34.2kB/s-35.0kB/s), io=23.4MiB (24.6MB), run=176978-177848msec WRITE: bw=141KiB/s (145kB/s), 35.2KiB/s-35.7KiB/s (36.0kB/s-36.6kB/s), io=24.6MiB (25.7MB), run=176978-177848msec 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=179369: Thu Jun 11 22:45:36 2026 read: IOPS=10, BW=167KiB/s (171kB/s)(5920KiB/35386msec) clat (usec): min=37, max=299448, avg=50805.40, stdev=34771.58 lat (usec): min=37, max=299450, avg=50806.78, stdev=34771.59 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 67], 10.00th=[ 4293], 20.00th=[ 27919], | 30.00th=[ 33817], 40.00th=[ 40109], 50.00th=[ 46400], 60.00th=[ 53216], | 70.00th=[ 60556], 80.00th=[ 70779], 90.00th=[ 86508], 95.00th=[111674], | 99.00th=[185598], 99.50th=[204473], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 31, max= 319, per=24.64%, avg=165.86, stdev=58.70, samples=69 iops : min= 1, max= 19, avg= 9.58, stdev= 3.69, samples=69 write: IOPS=11, BW=180KiB/s (184kB/s)(6368KiB/35386msec); 0 zone resets clat (usec): min=1704, max=167489, avg=41498.45, stdev=36972.75 lat (usec): min=1707, max=167491, avg=41504.94, stdev=36968.36 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 2540], 10.00th=[ 3851], 20.00th=[ 7046], | 30.00th=[ 12780], 40.00th=[ 22676], 50.00th=[ 30802], 60.00th=[ 43779], | 70.00th=[ 55837], 80.00th=[ 70779], 90.00th=[ 98042], 95.00th=[117965], | 99.00th=[149947], 99.50th=[164627], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 30, max= 351, per=25.34%, avg=179.38, stdev=76.96, samples=69 iops : min= 1, max= 21, avg=10.42, stdev= 4.82, samples=69 lat (usec) : 50=0.13%, 100=3.65%, 250=0.78%, 1000=0.13% lat (msec) : 2=0.91%, 4=4.56%, 10=8.33%, 20=6.64%, 50=36.46% lat (msec) : 100=30.47%, 250=7.81%, 500=0.13% cpu : usr=0.08%, sys=6.17%, ctx=1902, 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=179370: Thu Jun 11 22:45:36 2026 read: IOPS=10, BW=162KiB/s (166kB/s)(5744KiB/35451msec) clat (usec): min=49, max=236986, avg=55058.53, stdev=35044.08 lat (usec): min=50, max=236988, avg=55060.08, stdev=35044.12 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 81], 10.00th=[ 19792], 20.00th=[ 30016], | 30.00th=[ 36439], 40.00th=[ 43254], 50.00th=[ 49546], 60.00th=[ 58459], | 70.00th=[ 65274], 80.00th=[ 79168], 90.00th=[ 95945], 95.00th=[122160], | 99.00th=[189793], 99.50th=[223347], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 30, max= 283, per=23.90%, avg=160.84, stdev=61.69, samples=69 iops : min= 1, max= 17, avg= 9.25, stdev= 3.86, samples=69 write: IOPS=11, BW=185KiB/s (189kB/s)(6544KiB/35451msec); 0 zone resets clat (usec): min=1595, max=183695, avg=38260.63, stdev=36685.34 lat (usec): min=1596, max=183698, avg=38271.72, stdev=36684.57 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2212], 10.00th=[ 3785], 20.00th=[ 6718], | 30.00th=[ 11863], 40.00th=[ 18482], 50.00th=[ 26346], 60.00th=[ 35914], | 70.00th=[ 47449], 80.00th=[ 67634], 90.00th=[ 94897], 95.00th=[115868], | 99.00th=[145753], 99.50th=[168821], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 31, max= 412, per=25.59%, avg=181.17, stdev=89.14, samples=69 iops : min= 1, max= 25, avg=10.55, stdev= 5.60, samples=69 lat (usec) : 50=0.13%, 100=2.86%, 250=0.26% lat (msec) : 2=1.95%, 4=3.65%, 10=8.33%, 20=9.77%, 50=34.90% lat (msec) : 100=29.69%, 250=8.46% cpu : usr=0.08%, sys=5.99%, ctx=1811, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179371: Thu Jun 11 22:45:36 2026 read: IOPS=10, BW=176KiB/s (180kB/s)(6256KiB/35556msec) clat (usec): min=34, max=272669, avg=52363.51, stdev=36767.69 lat (usec): min=35, max=272670, avg=52365.15, stdev=36767.61 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 67], 10.00th=[ 11731], 20.00th=[ 25297], | 30.00th=[ 33424], 40.00th=[ 40109], 50.00th=[ 46924], 60.00th=[ 54789], | 70.00th=[ 64750], 80.00th=[ 73925], 90.00th=[ 94897], 95.00th=[116917], | 99.00th=[179307], 99.50th=[248513], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 62, max= 383, per=26.16%, avg=176.04, stdev=64.01, samples=70 iops : min= 3, max= 23, avg=10.21, stdev= 4.06, samples=70 write: IOPS=10, BW=170KiB/s (174kB/s)(6032KiB/35556msec); 0 zone resets clat (usec): min=1567, max=235661, avg=39861.81, stdev=38504.34 lat (usec): min=1569, max=235664, avg=39884.89, stdev=38502.32 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2933], 10.00th=[ 4113], 20.00th=[ 7635], | 30.00th=[ 12518], 40.00th=[ 20317], 50.00th=[ 29754], 60.00th=[ 38536], | 70.00th=[ 50070], 80.00th=[ 66323], 90.00th=[ 91751], 95.00th=[119014], | 99.00th=[173016], 99.50th=[225444], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 31, max= 349, per=23.71%, avg=167.89, stdev=73.25, samples=70 iops : min= 1, max= 21, avg= 9.70, stdev= 4.60, samples=70 lat (usec) : 50=0.39%, 100=3.52%, 250=0.39%, 500=0.39%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=1.30%, 4=3.39%, 10=8.07%, 20=8.59%, 50=36.07% lat (msec) : 100=30.08%, 250=7.42%, 500=0.13% cpu : usr=0.08%, sys=5.88%, ctx=1770, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179372: Thu Jun 11 22:45:36 2026 read: IOPS=10, BW=170KiB/s (174kB/s)(6032KiB/35412msec) clat (usec): min=53, max=218913, avg=52393.18, stdev=36284.56 lat (usec): min=54, max=218914, avg=52395.40, stdev=36283.80 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 73], 10.00th=[ 578], 20.00th=[ 27395], | 30.00th=[ 34341], 40.00th=[ 39060], 50.00th=[ 44827], 60.00th=[ 51643], | 70.00th=[ 63701], 80.00th=[ 78119], 90.00th=[ 98042], 95.00th=[116917], | 99.00th=[196084], 99.50th=[219153], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 287, per=25.56%, avg=172.01, stdev=55.63, samples=68 iops : min= 1, max= 17, avg= 9.96, stdev= 3.51, samples=68 write: IOPS=11, BW=177KiB/s (181kB/s)(6256KiB/35412msec); 0 zone resets clat (usec): min=1561, max=240825, avg=39906.27, stdev=41420.63 lat (usec): min=1562, max=240829, avg=39910.11, stdev=41421.18 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2671], 10.00th=[ 3785], 20.00th=[ 6194], | 30.00th=[ 10290], 40.00th=[ 15926], 50.00th=[ 26084], 60.00th=[ 37487], | 70.00th=[ 47449], 80.00th=[ 68682], 90.00th=[ 95945], 95.00th=[120062], | 99.00th=[187696], 99.50th=[212861], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 62, max= 410, per=24.95%, avg=176.68, stdev=73.46, samples=69 iops : min= 3, max= 25, avg=10.26, stdev= 4.63, samples=69 lat (usec) : 100=3.65%, 250=0.91%, 500=0.26%, 750=0.13% lat (msec) : 2=1.69%, 4=4.04%, 10=9.38%, 20=8.33%, 50=36.85% lat (msec) : 100=25.52%, 250=9.24% cpu : usr=0.06%, sys=5.68%, ctx=1762, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=674KiB/s (690kB/s), 162KiB/s-176KiB/s (166kB/s-180kB/s), io=23.4MiB (24.5MB), run=35386-35556msec WRITE: bw=709KiB/s (726kB/s), 170KiB/s-185KiB/s (174kB/s-189kB/s), io=24.6MiB (25.8MB), run=35386-35556msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179364: Thu Jun 11 22:45:49 2026 read: IOPS=7, BW=120KiB/s (122kB/s)(5920KiB/49496msec) clat (msec): min=7, max=301, avg=52.97, stdev=43.81 lat (msec): min=7, max=301, avg=52.98, stdev=43.81 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 45], | 70.00th=[ 56], 80.00th=[ 79], 90.00th=[ 106], 95.00th=[ 144], | 99.00th=[ 226], 99.50th=[ 271], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 384, per=24.90%, avg=120.26, stdev=74.73, samples=95 iops : min= 1, max= 24, avg= 6.69, stdev= 4.77, samples=95 write: IOPS=8, BW=129KiB/s (132kB/s)(6368KiB/49496msec); 0 zone resets clat (msec): min=14, max=351, avg=74.59, stdev=52.41 lat (msec): min=14, max=351, avg=74.59, stdev=52.41 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 37], | 30.00th=[ 43], 40.00th=[ 49], 50.00th=[ 57], 60.00th=[ 67], | 70.00th=[ 83], 80.00th=[ 104], 90.00th=[ 148], 95.00th=[ 176], | 99.00th=[ 313], 99.50th=[ 334], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 31, max= 320, per=25.32%, avg=128.90, stdev=71.70, samples=96 iops : min= 1, max= 20, avg= 7.24, stdev= 4.56, samples=96 lat (msec) : 10=0.39%, 20=6.64%, 50=46.35%, 100=29.95%, 250=15.63% lat (msec) : 500=1.04% cpu : usr=0.05%, sys=1.99%, ctx=1258, 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=179365: Thu Jun 11 22:45:49 2026 read: IOPS=7, BW=116KiB/s (119kB/s)(5744KiB/49446msec) clat (msec): min=7, max=314, avg=52.49, stdev=44.38 lat (msec): min=7, max=314, avg=52.49, stdev=44.38 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 32], 50.00th=[ 38], 60.00th=[ 46], | 70.00th=[ 57], 80.00th=[ 78], 90.00th=[ 115], 95.00th=[ 146], | 99.00th=[ 207], 99.50th=[ 292], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 416, per=24.64%, avg=119.00, stdev=81.04, samples=94 iops : min= 1, max= 26, avg= 6.62, stdev= 5.17, samples=94 write: IOPS=8, BW=132KiB/s (136kB/s)(6544KiB/49446msec); 0 zone resets clat (msec): min=16, max=311, avg=74.45, stdev=46.91 lat (msec): min=16, max=311, avg=74.45, stdev=46.91 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 38], | 30.00th=[ 45], 40.00th=[ 53], 50.00th=[ 63], 60.00th=[ 72], | 70.00th=[ 85], 80.00th=[ 107], 90.00th=[ 140], 95.00th=[ 165], | 99.00th=[ 232], 99.50th=[ 292], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 442, per=25.71%, avg=130.88, stdev=72.10, samples=97 iops : min= 1, max= 27, avg= 7.36, stdev= 4.59, samples=97 lat (msec) : 10=0.65%, 20=7.94%, 50=41.41%, 100=32.16%, 250=17.06% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=2.00%, ctx=1273, 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=179366: Thu Jun 11 22:45:49 2026 read: IOPS=8, BW=128KiB/s (131kB/s)(6256KiB/48718msec) clat (msec): min=9, max=282, avg=50.03, stdev=41.65 lat (msec): min=9, max=282, avg=50.03, stdev=41.65 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 53], 80.00th=[ 68], 90.00th=[ 109], 95.00th=[ 142], | 99.00th=[ 218], 99.50th=[ 264], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 413, per=26.66%, avg=128.77, stdev=85.35, samples=95 iops : min= 1, max= 25, avg= 7.23, stdev= 5.42, samples=95 write: IOPS=7, BW=124KiB/s (127kB/s)(6032KiB/48718msec); 0 zone resets clat (msec): min=14, max=319, avg=77.15, stdev=47.40 lat (msec): min=14, max=319, avg=77.15, stdev=47.40 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 32], 20.00th=[ 38], | 30.00th=[ 45], 40.00th=[ 53], 50.00th=[ 63], 60.00th=[ 81], | 70.00th=[ 91], 80.00th=[ 111], 90.00th=[ 146], 95.00th=[ 167], | 99.00th=[ 232], 99.50th=[ 257], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 31, max= 379, per=23.93%, avg=121.81, stdev=67.96, samples=95 iops : min= 1, max= 23, avg= 6.80, stdev= 4.35, samples=95 lat (msec) : 10=0.13%, 20=8.46%, 50=43.23%, 100=30.08%, 250=17.58% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=2.08%, ctx=1267, 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=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=179367: Thu Jun 11 22:45:49 2026 read: IOPS=7, BW=122KiB/s (125kB/s)(6032KiB/49297msec) clat (msec): min=9, max=292, avg=52.55, stdev=42.56 lat (msec): min=9, max=292, avg=52.55, stdev=42.56 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 37], 60.00th=[ 44], | 70.00th=[ 55], 80.00th=[ 78], 90.00th=[ 115], 95.00th=[ 150], | 99.00th=[ 199], 99.50th=[ 224], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 320, per=25.89%, avg=125.04, stdev=74.10, samples=94 iops : min= 1, max= 20, avg= 7.00, stdev= 4.71, samples=94 write: IOPS=7, BW=127KiB/s (130kB/s)(6256KiB/49297msec); 0 zone resets clat (msec): min=16, max=356, avg=74.82, stdev=51.12 lat (msec): min=16, max=356, avg=74.83, stdev=51.12 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 36], | 30.00th=[ 43], 40.00th=[ 51], 50.00th=[ 58], 60.00th=[ 69], | 70.00th=[ 84], 80.00th=[ 106], 90.00th=[ 150], 95.00th=[ 182], | 99.00th=[ 264], 99.50th=[ 334], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 384, per=25.13%, avg=127.91, stdev=74.80, samples=96 iops : min= 1, max= 24, avg= 7.18, stdev= 4.75, samples=96 lat (msec) : 10=0.26%, 20=7.03%, 50=45.18%, 100=29.43%, 250=17.45% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=2.18%, ctx=1278, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=484KiB/s (496kB/s), 116KiB/s-128KiB/s (119kB/s-131kB/s), io=23.4MiB (24.5MB), run=48718-49496msec WRITE: bw=509KiB/s (521kB/s), 124KiB/s-132KiB/s (127kB/s-136kB/s), io=24.6MiB (25.8MB), run=48718-49496msec 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=179386: Thu Jun 11 22:46:06 2026 read: IOPS=1, BW=1146KiB/s (1173kB/s)(7168KiB/6256msec) clat (usec): min=1676, max=3606.1k, avg=682645.34, stdev=1292822.41 lat (usec): min=1677, max=3606.1k, avg=682646.70, stdev=1292822.40 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1680], 10.00th=[ 1680], | 20.00th=[ 162530], 30.00th=[ 196084], 40.00th=[ 196084], | 50.00th=[ 233833], 60.00th=[ 287310], 70.00th=[ 287310], | 80.00th=[ 291505], 90.00th=[3607102], 95.00th=[3607102], | 99.00th=[3607102], 99.50th=[3607102], 99.90th=[3607102], | 99.95th=[3607102], 99.99th=[3607102] bw ( KiB/s): min= 1984, max= 4063, per=74.37%, avg=2434.00, stdev=911.01, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 0.84, samples=5 write: IOPS=0, BW=818KiB/s (838kB/s)(5120KiB/6256msec); 0 zone resets clat (msec): min=81, max=476, avg=257.90, stdev=152.86 lat (msec): min=81, max=476, avg=257.97, stdev=152.86 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 477], 95.00th=[ 477], | 99.00th=[ 477], 99.50th=[ 477], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 2048, max= 4055, per=72.81%, avg=3337.00, stdev=1118.72, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 lat (msec) : 2=8.33%, 100=8.33%, 250=41.67%, 500=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.51%, ctx=384, 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=179387: Thu Jun 11 22:46:06 2026 read: IOPS=0, BW=355KiB/s (363kB/s)(2048KiB/5777msec) clat (msec): min=237, max=1597, avg=917.25, stdev=961.73 lat (msec): min=237, max=1597, avg=917.26, stdev=961.73 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 1603], | 70.00th=[ 1603], 80.00th=[ 1603], 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= 1973, max= 2043, per=61.35%, avg=2008.00, stdev=49.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1773KiB/s (1815kB/s)(10.0MiB/5777msec); 0 zone resets clat (msec): min=172, max=935, avg=376.16, stdev=230.84 lat (msec): min=172, max=935, avg=376.26, stdev=230.83 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 205], | 30.00th=[ 241], 40.00th=[ 245], 50.00th=[ 317], 60.00th=[ 338], | 70.00th=[ 342], 80.00th=[ 363], 90.00th=[ 609], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1954, max= 4096, per=66.19%, avg=3033.33, stdev=1143.42, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.33, samples=6 lat (msec) : 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=12.24%, ctx=213, 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=179388: Thu Jun 11 22:46:06 2026 read: IOPS=1, BW=1128KiB/s (1155kB/s)(6144KiB/5447msec) clat (usec): min=496, max=250913, avg=169102.26, stdev=86324.78 lat (usec): min=497, max=250914, avg=169103.44, stdev=86324.80 clat percentiles (usec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[183501], | 30.00th=[183501], 40.00th=[187696], 50.00th=[187696], 60.00th=[187696], | 70.00th=[204473], 80.00th=[204473], 90.00th=[250610], 95.00th=[250610], | 99.00th=[250610], 99.50th=[250610], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 2031, max= 4071, per=100.00%, avg=3349.33, stdev=1143.42, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1128KiB/s (1155kB/s)(6144KiB/5447msec); 0 zone resets clat (msec): min=101, max=2769, avg=697.21, stdev=1029.26 lat (msec): min=101, max=2769, avg=697.32, stdev=1029.32 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 178], 50.00th=[ 178], 60.00th=[ 456], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 1973, max= 2048, per=43.95%, avg=2014.20, stdev=33.42, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 500=8.33% lat (msec) : 250=58.33%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=8.58%, ctx=220, 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=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=179389: Thu Jun 11 22:46:06 2026 read: IOPS=1, BW=1033KiB/s (1058kB/s)(5120KiB/4957msec) clat (usec): min=453, max=523702, avg=105427.03, stdev=233823.64 lat (usec): min=455, max=523703, avg=105428.21, stdev=233823.19 clat percentiles (usec): | 1.00th=[ 453], 5.00th=[ 453], 10.00th=[ 453], 20.00th=[ 453], | 30.00th=[ 570], 40.00th=[ 570], 50.00th=[ 799], 60.00th=[ 799], | 70.00th=[ 1598], 80.00th=[ 1598], 90.00th=[522191], 95.00th=[522191], | 99.00th=[522191], 99.50th=[522191], 99.90th=[522191], 99.95th=[522191], | 99.99th=[522191] bw ( KiB/s): min= 1996, max= 5965, per=100.00%, avg=3980.50, stdev=2806.51, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1446KiB/s (1481kB/s)(7168KiB/4957msec); 0 zone resets clat (msec): min=96, max=2890, avg=628.75, stdev=1007.38 lat (msec): min=96, max=2890, avg=628.81, stdev=1007.37 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 178], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 211], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 542], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 1378, max= 5988, per=83.30%, avg=3817.67, stdev=2316.77, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 lat (usec) : 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : 2=8.33%, 100=8.33%, 250=25.00%, 500=8.33%, 750=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=8.03%, ctx=110, 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=3274KiB/s (3352kB/s), 355KiB/s-1146KiB/s (363kB/s-1173kB/s), io=20.0MiB (20.0MB), run=4957-6256msec WRITE: bw=4583KiB/s (4693kB/s), 818KiB/s-1773KiB/s (838kB/s-1815kB/s), io=28.0MiB (29.4MB), run=4957-6256msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179390: Thu Jun 11 22:46:07 2026 read: IOPS=1, BW=1073KiB/s (1099kB/s)(7168KiB/6680msec) clat (msec): min=59, max=2917, avg=617.90, stdev=1036.00 lat (msec): min=59, max=2917, avg=617.90, stdev=1036.00 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 60], 10.00th=[ 60], 20.00th=[ 92], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 161], 60.00th=[ 249], | 70.00th=[ 249], 80.00th=[ 693], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 1899, max= 4000, per=78.44%, avg=2404.20, stdev=894.21, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=766KiB/s (785kB/s)(5120KiB/6680msec); 0 zone resets clat (msec): min=98, max=861, avg=432.95, stdev=281.18 lat (msec): min=98, max=861, avg=433.03, stdev=281.18 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 100], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 510], 80.00th=[ 510], 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= 2011, max= 4063, per=78.73%, avg=3379.00, stdev=1184.72, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=25.00%, 500=16.67%, 750=16.67%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.19%, ctx=101, 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=179391: Thu Jun 11 22:46:07 2026 read: IOPS=0, BW=334KiB/s (342kB/s)(2048KiB/6129msec) clat (msec): min=87, max=1896, avg=991.75, stdev=1279.33 lat (msec): min=87, max=1896, avg=991.75, stdev=1279.33 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 88], | 30.00th=[ 88], 40.00th=[ 88], 50.00th=[ 88], 60.00th=[ 1905], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 2023, max= 2048, per=66.41%, avg=2035.50, stdev=17.68, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1671KiB/s (1711kB/s)(10.0MiB/6129msec); 0 zone resets clat (msec): min=271, max=509, avg=395.09, stdev=79.77 lat (msec): min=272, max=509, avg=395.16, stdev=79.77 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 347], 50.00th=[ 376], 60.00th=[ 409], | 70.00th=[ 418], 80.00th=[ 481], 90.00th=[ 489], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 2000, max= 4047, per=53.90%, avg=2313.57, stdev=764.56, samples=7 iops : min= 1, max= 3, avg= 1.43, stdev= 0.79, samples=7 lat (msec) : 100=8.33%, 500=75.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=7.41%, ctx=204, 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=179392: Thu Jun 11 22:46:07 2026 read: IOPS=0, BW=994KiB/s (1018kB/s)(6144KiB/6181msec) clat (msec): min=110, max=317, avg=177.75, stdev=87.44 lat (msec): min=110, max=317, avg=177.78, stdev=87.48 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 113], | 30.00th=[ 113], 40.00th=[ 124], 50.00th=[ 124], 60.00th=[ 148], | 70.00th=[ 255], 80.00th=[ 255], 90.00th=[ 317], 95.00th=[ 317], | 99.00th=[ 317], 99.50th=[ 317], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 2000, max= 4096, per=82.69%, avg=2534.50, stdev=1041.05, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=0, BW=994KiB/s (1018kB/s)(6144KiB/6181msec); 0 zone resets clat (msec): min=92, max=1935, avg=831.41, stdev=672.83 lat (msec): min=92, max=1935, avg=831.48, stdev=672.83 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 768], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1938], 95.00th=[ 1938], | 99.00th=[ 1938], 99.50th=[ 1938], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 2000, max= 4039, per=56.46%, avg=2423.20, stdev=903.33, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : 2000=16.67% cpu : usr=0.00%, sys=2.36%, ctx=58, 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=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=179393: Thu Jun 11 22:46:07 2026 read: IOPS=0, BW=864KiB/s (885kB/s)(5120KiB/5923msec) clat (msec): min=105, max=201, avg=147.79, stdev=36.49 lat (msec): min=105, max=201, avg=147.79, stdev=36.49 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 106], | 30.00th=[ 124], 40.00th=[ 124], 50.00th=[ 150], 60.00th=[ 150], | 70.00th=[ 159], 80.00th=[ 159], 90.00th=[ 203], 95.00th=[ 203], | 99.00th=[ 203], 99.50th=[ 203], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1210KiB/s (1239kB/s)(7168KiB/5923msec); 0 zone resets clat (msec): min=147, max=2073, avg=731.18, stdev=694.15 lat (msec): min=147, max=2073, avg=731.26, stdev=694.15 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 228], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 472], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 1267], 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= 2000, max= 4055, per=70.70%, avg=3034.25, stdev=1169.57, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 250=58.33%, 500=16.67%, 750=8.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=3.04%, ctx=80, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3066KiB/s (3139kB/s), 334KiB/s-1073KiB/s (342kB/s-1099kB/s), io=20.0MiB (20.0MB), run=5923-6680msec WRITE: bw=4292KiB/s (4395kB/s), 766KiB/s-1671KiB/s (785kB/s-1711kB/s), io=28.0MiB (29.4MB), run=5923-6680msec 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=179401: Thu Jun 11 22:46:21 2026 read: IOPS=1, BW=4328KiB/s (4432kB/s)(12.0MiB/2839msec) clat (msec): min=858, max=1057, avg=927.09, stdev=113.30 lat (msec): min=858, max=1057, avg=927.09, stdev=113.30 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.56%, ctx=43, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179402: Thu Jun 11 22:46:21 2026 read: IOPS=0, BW=1482KiB/s (1518kB/s)(4096KiB/2763msec) clat (nsec): min=1462.5M, max=1462.5M, avg=1462480223.00, stdev= 0.00 lat (nsec): min=1462.5M, max=1462.5M, avg=1462482303.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1469], 5.00th=[ 1469], 10.00th=[ 1469], 20.00th=[ 1469], | 30.00th=[ 1469], 40.00th=[ 1469], 50.00th=[ 1469], 60.00th=[ 1469], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2965KiB/s (3036kB/s)(8192KiB/2763msec); 0 zone resets clat (msec): min=512, max=734, avg=623.72, stdev=157.29 lat (msec): min=516, max=735, avg=625.80, stdev=154.80 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 514], 50.00th=[ 514], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 8175, max= 8175, per=74.08%, avg=8175.00, 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=3.66%, ctx=41, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179403: Thu Jun 11 22:46:21 2026 write: IOPS=2, BW=9958KiB/s (10.2MB/s)(12.0MiB/1234msec); 0 zone resets clat (msec): min=247, max=565, avg=360.51, stdev=177.60 lat (msec): min=247, max=567, avg=361.52, stdev=178.93 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min=12263, max=12263, per=100.00%, avg=12263.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=9.41%, ctx=44, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179404: Thu Jun 11 22:46:21 2026 write: IOPS=1, BW=4139KiB/s (4238kB/s)(12.0MiB/2969msec); 0 zone resets clat (msec): min=296, max=2059, avg=944.96, stdev=969.21 lat (msec): min=297, max=2059, avg=945.36, stdev=969.22 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 2056], 80.00th=[ 2056], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 6320, max= 8126, per=65.45%, avg=7223.00, stdev=1277.03, 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=3.91%, ctx=55, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5771KiB/s (5910kB/s), 1482KiB/s-4328KiB/s (1518kB/s-4432kB/s), io=16.0MiB (16.8MB), run=2763-2839msec WRITE: bw=10.8MiB/s (11.3MB/s), 2965KiB/s-9958KiB/s (3036kB/s-10.2MB/s), io=32.0MiB (33.6MB), run=1234-2969msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179405: Thu Jun 11 22:46:22 2026 read: IOPS=1, BW=4583KiB/s (4693kB/s)(12.0MiB/2681msec) clat (msec): min=829, max=921, avg=871.49, stdev=46.46 lat (msec): min=829, max=921, avg=871.49, stdev=46.46 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, 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=14.29%, ctx=373, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179406: Thu Jun 11 22:46:22 2026 read: IOPS=0, BW=1779KiB/s (1822kB/s)(4096KiB/2302msec) clat (nsec): min=743652k, max=743652k, avg=743651929.00, stdev= 0.00 lat (nsec): min=743654k, max=743654k, avg=743653886.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 743], 80.00th=[ 743], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] 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=3559KiB/s (3644kB/s)(8192KiB/2302msec); 0 zone resets clat (msec): min=681, max=736, avg=708.95, stdev=38.72 lat (msec): min=681, max=736, avg=709.29, stdev=38.76 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 8126, max= 8126, per=80.97%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=4.52%, ctx=95, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179407: Thu Jun 11 22:46:22 2026 write: IOPS=0, BW=3764KiB/s (3854kB/s)(12.0MiB/3265msec); 0 zone resets clat (msec): min=138, max=2879, avg=1053.56, stdev=1581.03 lat (msec): min=138, max=2879, avg=1053.82, stdev=1581.07 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 144], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min=16125, max=16125, per=100.00%, avg=16125.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.98%, ctx=48, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=179408: Thu Jun 11 22:46:22 2026 write: IOPS=1, BW=4285KiB/s (4387kB/s)(12.0MiB/2868msec); 0 zone resets clat (msec): min=311, max=1908, avg=923.70, stdev=861.12 lat (msec): min=312, max=1911, avg=924.86, stdev=862.54 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 6907, max= 8143, per=74.98%, avg=7525.00, stdev=873.98, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=2.58%, ctx=31, 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=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=6111KiB/s (6258kB/s), 1779KiB/s-4583KiB/s (1822kB/s-4693kB/s), io=16.0MiB (16.8MB), run=2302-2681msec WRITE: bw=9.80MiB/s (10.3MB/s), 3559KiB/s-4285KiB/s (3644kB/s-4387kB/s), io=32.0MiB (33.6MB), run=2302-3265msec