== sanity test 398b: DIO and buffer IO race ============== 02:35:10 (1788935710) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.6853 s, 8.9 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=179821: Wed Sep 9 02:37:35 2026 read: IOPS=11, BW=47.4KiB/s (48.6kB/s)(5992KiB/126308msec) clat (usec): min=36, max=989536, avg=46559.25, stdev=39709.45 lat (usec): min=37, max=989538, avg=46567.06, stdev=39708.89 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 105], 10.00th=[ 15270], 20.00th=[ 22414], | 30.00th=[ 27132], 40.00th=[ 32900], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 55313], 80.00th=[ 67634], 90.00th=[ 86508], 95.00th=[104334], | 99.00th=[160433], 99.50th=[179307], 99.90th=[221250], 99.95th=[985662], | 99.99th=[985662] bw ( KiB/s): min= 7, max= 136, per=24.90%, avg=47.05, stdev=20.49, samples=248 iops : min= 1, max= 34, avg=11.09, stdev= 5.16, samples=248 write: IOPS=12, BW=49.8KiB/s (51.0kB/s)(6296KiB/126308msec); 0 zone resets clat (usec): min=948, max=235354, avg=35690.48, stdev=37849.03 lat (usec): min=949, max=235355, avg=35692.29, stdev=37849.12 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1172], 10.00th=[ 1450], 20.00th=[ 3130], | 30.00th=[ 6259], 40.00th=[ 14746], 50.00th=[ 24249], 60.00th=[ 34341], | 70.00th=[ 46400], 80.00th=[ 63701], 90.00th=[ 89654], 95.00th=[109577], | 99.00th=[164627], 99.50th=[181404], 99.90th=[233833], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 7, max= 167, per=25.19%, avg=49.62, stdev=22.07, samples=247 iops : min= 1, max= 41, avg=11.74, stdev= 5.55, samples=247 lat (usec) : 50=0.46%, 100=1.95%, 250=0.16%, 500=0.03%, 1000=0.10% lat (msec) : 2=6.80%, 4=4.95%, 10=7.06%, 20=9.18%, 50=37.43% lat (msec) : 100=25.29%, 250=6.54%, 1000=0.03% cpu : usr=0.07%, sys=4.82%, ctx=6338, 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=179822: Wed Sep 9 02:37:35 2026 read: IOPS=11, BW=46.8KiB/s (47.9kB/s)(5940KiB/127033msec) clat (usec): min=41, max=309974, avg=47250.64, stdev=33779.45 lat (usec): min=42, max=309975, avg=47257.08, stdev=33774.53 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 8094], 10.00th=[ 16450], 20.00th=[ 22938], | 30.00th=[ 28443], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 85459], 95.00th=[105382], | 99.00th=[183501], 99.50th=[208667], 99.90th=[283116], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 119, per=24.65%, avg=46.58, stdev=17.50, samples=249 iops : min= 1, max= 29, avg=10.98, stdev= 4.39, samples=249 write: IOPS=12, BW=49.0KiB/s (51.2kB/s)(6348KiB/127033msec); 0 zone resets clat (usec): min=894, max=913784, avg=35593.97, stdev=43429.02 lat (usec): min=895, max=913786, avg=35603.27, stdev=43427.03 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1188], 10.00th=[ 1500], 20.00th=[ 3195], | 30.00th=[ 5997], 40.00th=[ 13435], 50.00th=[ 24249], 60.00th=[ 33424], | 70.00th=[ 45876], 80.00th=[ 62129], 90.00th=[ 88605], 95.00th=[111674], | 99.00th=[164627], 99.50th=[179307], 99.90th=[225444], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 7, max= 182, per=25.30%, avg=49.83, stdev=23.82, samples=249 iops : min= 1, max= 45, avg=11.79, stdev= 5.99, samples=249 lat (usec) : 50=0.33%, 100=1.66%, 250=0.10%, 500=0.07%, 1000=0.20% lat (msec) : 2=6.64%, 4=5.27%, 10=7.00%, 20=9.51%, 50=37.73% lat (msec) : 100=24.97%, 250=6.41%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=4.64%, ctx=6405, 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=179823: Wed Sep 9 02:37:35 2026 read: IOPS=11, BW=47.7KiB/s (48.9kB/s)(6028KiB/126242msec) clat (usec): min=41, max=383513, avg=45066.94, stdev=32314.80 lat (usec): min=41, max=383515, avg=45070.45, stdev=32313.55 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 75], 10.00th=[ 14877], 20.00th=[ 21890], | 30.00th=[ 27132], 40.00th=[ 32113], 50.00th=[ 38011], 60.00th=[ 45351], | 70.00th=[ 53216], 80.00th=[ 65274], 90.00th=[ 84411], 95.00th=[106431], | 99.00th=[147850], 99.50th=[168821], 99.90th=[258999], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 7, max= 127, per=25.22%, avg=47.67, stdev=20.39, samples=246 iops : min= 1, max= 31, avg=11.24, stdev= 5.13, samples=246 write: IOPS=12, BW=49.6KiB/s (50.8kB/s)(6260KiB/126242msec); 0 zone resets clat (usec): min=937, max=1083.2k, avg=36998.30, stdev=47998.50 lat (usec): min=939, max=1083.2k, avg=37000.66, stdev=47999.03 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1352], | 20.00th=[ 2835], 30.00th=[ 5800], 40.00th=[ 13698], | 50.00th=[ 24511], 60.00th=[ 34341], 70.00th=[ 47449], | 80.00th=[ 64750], 90.00th=[ 91751], 95.00th=[ 116917], | 99.00th=[ 191890], 99.50th=[ 214959], 99.90th=[ 248513], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 159, per=25.07%, avg=49.39, stdev=23.48, samples=246 iops : min= 1, max= 39, avg=11.68, stdev= 5.91, samples=246 lat (usec) : 50=0.46%, 100=2.31%, 250=0.20%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=7.75%, 4=4.72%, 10=6.51%, 20=9.28%, 50=37.99% lat (msec) : 100=23.54%, 250=6.87%, 500=0.10%, 2000=0.03% cpu : usr=0.08%, sys=4.81%, ctx=6359, 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=179824: Wed Sep 9 02:37:35 2026 read: IOPS=12, BW=48.2KiB/s (49.4kB/s)(6052KiB/125529msec) clat (usec): min=39, max=276982, avg=45012.76, stdev=31236.95 lat (usec): min=39, max=276983, avg=45028.33, stdev=31248.60 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 73], 10.00th=[ 15008], 20.00th=[ 21890], | 30.00th=[ 27132], 40.00th=[ 32113], 50.00th=[ 38011], 60.00th=[ 44827], | 70.00th=[ 54264], 80.00th=[ 66323], 90.00th=[ 84411], 95.00th=[101188], | 99.00th=[152044], 99.50th=[177210], 99.90th=[235930], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 143, per=25.66%, avg=48.50, stdev=19.78, samples=244 iops : min= 1, max= 35, avg=11.45, stdev= 4.98, samples=244 write: IOPS=12, BW=49.7KiB/s (50.9kB/s)(6236KiB/125529msec); 0 zone resets clat (usec): min=803, max=998723, avg=36543.48, stdev=46197.26 lat (usec): min=805, max=998725, avg=36550.70, stdev=46199.10 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1172], 10.00th=[ 1385], | 20.00th=[ 3163], 30.00th=[ 6063], 40.00th=[ 14746], | 50.00th=[ 26346], 60.00th=[ 34866], 70.00th=[ 46400], | 80.00th=[ 60556], 90.00th=[ 89654], 95.00th=[ 113771], | 99.00th=[ 185598], 99.50th=[ 208667], 99.90th=[ 320865], | 99.95th=[1002439], 99.99th=[1002439] bw ( KiB/s): min= 7, max= 135, per=25.26%, avg=49.77, stdev=22.70, samples=245 iops : min= 1, max= 33, avg=11.77, stdev= 5.71, samples=245 lat (usec) : 50=0.55%, 100=2.15%, 250=0.26%, 500=0.03%, 1000=0.16% lat (msec) : 2=7.32%, 4=4.26%, 10=7.19%, 20=9.02%, 50=38.25% lat (msec) : 100=24.45%, 250=6.25%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=4.80%, ctx=6312, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=189KiB/s (194kB/s), 46.8KiB/s-48.2KiB/s (47.9kB/s-49.4kB/s), io=23.4MiB (24.6MB), run=125529-127033msec WRITE: bw=198KiB/s (203kB/s), 49.6KiB/s-49.0KiB/s (50.8kB/s-51.2kB/s), io=24.6MiB (25.7MB), run=125529-127033msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179817: Wed Sep 9 02:38:18 2026 read: IOPS=8, BW=35.3KiB/s (36.1kB/s)(5992KiB/169765msec) clat (msec): min=5, max=1048, avg=44.81, stdev=49.61 lat (msec): min=5, max=1048, avg=44.81, stdev=49.61 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 63], 90.00th=[ 99], 95.00th=[ 142], | 99.00th=[ 205], 99.50th=[ 226], 99.90th=[ 326], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 7, max= 136, per=25.52%, avg=35.99, stdev=25.05, samples=322 iops : min= 1, max= 34, avg= 8.33, stdev= 6.32, samples=322 write: IOPS=9, BW=37.1KiB/s (37.0kB/s)(6296KiB/169765msec); 0 zone resets clat (msec): min=11, max=455, avg=64.97, stdev=48.43 lat (msec): min=11, max=455, avg=64.97, stdev=48.43 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 59], | 70.00th=[ 75], 80.00th=[ 95], 90.00th=[ 128], 95.00th=[ 163], | 99.00th=[ 228], 99.50th=[ 284], 99.90th=[ 405], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 7, max= 119, per=25.11%, avg=37.16, stdev=24.14, samples=328 iops : min= 1, max= 29, avg= 8.63, stdev= 6.09, samples=328 lat (msec) : 10=2.28%, 20=14.10%, 50=45.90%, 100=23.86%, 250=13.38% lat (msec) : 500=0.46%, 2000=0.03% cpu : usr=0.05%, sys=1.60%, ctx=4748, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179818: Wed Sep 9 02:38:18 2026 read: IOPS=8, BW=34.0KiB/s (35.8kB/s)(5940KiB/169785msec) clat (msec): min=5, max=989, avg=43.64, stdev=48.38 lat (msec): min=5, max=989, avg=43.64, stdev=48.38 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 62], 90.00th=[ 97], 95.00th=[ 136], | 99.00th=[ 205], 99.50th=[ 234], 99.90th=[ 334], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 144, per=24.97%, avg=35.21, stdev=24.99, samples=327 iops : min= 1, max= 36, avg= 8.13, stdev= 6.30, samples=327 write: IOPS=9, BW=37.4KiB/s (38.3kB/s)(6348KiB/169785msec); 0 zone resets clat (msec): min=9, max=393, avg=65.91, stdev=47.80 lat (msec): min=9, max=393, avg=65.91, stdev=47.80 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 49], 60.00th=[ 59], | 70.00th=[ 75], 80.00th=[ 101], 90.00th=[ 134], 95.00th=[ 165], | 99.00th=[ 224], 99.50th=[ 251], 99.90th=[ 363], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 7, max= 111, per=24.96%, avg=36.94, stdev=24.53, samples=332 iops : min= 1, max= 27, avg= 8.57, stdev= 6.18, samples=332 lat (msec) : 10=2.57%, 20=15.36%, 50=44.86%, 100=22.14%, 250=14.65% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.06%, sys=1.50%, ctx=4576, 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=179819: Wed Sep 9 02:38:18 2026 read: IOPS=8, BW=35.6KiB/s (36.5kB/s)(6028KiB/169186msec) clat (msec): min=5, max=321, avg=43.07, stdev=41.14 lat (msec): min=5, max=321, avg=43.07, stdev=41.14 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 96], 95.00th=[ 132], | 99.00th=[ 211], 99.50th=[ 228], 99.90th=[ 259], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 7, max= 148, per=25.39%, avg=35.80, stdev=24.32, samples=327 iops : min= 1, max= 37, avg= 8.28, stdev= 6.13, samples=327 write: IOPS=9, BW=37.0KiB/s (37.9kB/s)(6260KiB/169186msec); 0 zone resets clat (msec): min=11, max=1022, avg=66.39, stdev=53.71 lat (msec): min=11, max=1022, avg=66.39, stdev=53.71 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 49], 60.00th=[ 59], | 70.00th=[ 79], 80.00th=[ 99], 90.00th=[ 128], 95.00th=[ 163], | 99.00th=[ 239], 99.50th=[ 264], 99.90th=[ 405], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 128, per=25.10%, avg=37.14, stdev=23.89, samples=327 iops : min= 1, max= 32, avg= 8.62, stdev= 6.04, samples=327 lat (msec) : 10=2.41%, 20=14.78%, 50=46.09%, 100=22.33%, 250=13.87% lat (msec) : 500=0.49%, 2000=0.03% cpu : usr=0.05%, sys=1.57%, ctx=4559, 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=179820: Wed Sep 9 02:38:18 2026 read: IOPS=8, BW=35.9KiB/s (36.8kB/s)(6052KiB/168603msec) clat (msec): min=5, max=333, avg=43.37, stdev=41.25 lat (msec): min=5, max=333, avg=43.37, stdev=41.25 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 46], 80.00th=[ 64], 90.00th=[ 95], 95.00th=[ 126], | 99.00th=[ 211], 99.50th=[ 230], 99.90th=[ 326], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 135, per=26.07%, avg=36.77, stdev=24.96, samples=320 iops : min= 1, max= 33, avg= 8.53, stdev= 6.28, samples=320 write: IOPS=9, BW=36.0KiB/s (37.9kB/s)(6236KiB/168603msec); 0 zone resets clat (msec): min=11, max=1016, avg=65.82, stdev=53.24 lat (msec): min=11, max=1016, avg=65.82, stdev=53.24 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 75], 80.00th=[ 96], 90.00th=[ 125], 95.00th=[ 157], | 99.00th=[ 249], 99.50th=[ 300], 99.90th=[ 359], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 127, per=25.33%, avg=37.50, stdev=23.14, samples=323 iops : min= 1, max= 31, avg= 8.70, stdev= 5.84, samples=323 lat (msec) : 10=2.38%, 20=14.23%, 50=45.61%, 100=24.25%, 250=12.86% lat (msec) : 500=0.65%, 2000=0.03% cpu : usr=0.04%, sys=1.63%, ctx=4712, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=141KiB/s (145kB/s), 34.0KiB/s-35.9KiB/s (35.8kB/s-36.8kB/s), io=23.4MiB (24.6MB), run=168603-169785msec WRITE: bw=148KiB/s (152kB/s), 36.0KiB/s-37.4KiB/s (37.9kB/s-38.3kB/s), io=24.6MiB (25.7MB), run=168603-169785msec 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=179871: Wed Sep 9 02:39:06 2026 read: IOPS=11, BW=180KiB/s (185kB/s)(5920KiB/32817msec) clat (usec): min=41, max=169431, avg=47990.00, stdev=32769.32 lat (usec): min=41, max=169432, avg=47996.44, stdev=32761.66 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 59], 10.00th=[ 77], 20.00th=[ 23725], | 30.00th=[ 30278], 40.00th=[ 36439], 50.00th=[ 42730], 60.00th=[ 51119], | 70.00th=[ 60031], 80.00th=[ 70779], 90.00th=[ 92799], 95.00th=[104334], | 99.00th=[147850], 99.50th=[168821], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 31, max= 349, per=25.85%, avg=177.08, stdev=66.68, samples=64 iops : min= 1, max= 21, avg=10.34, stdev= 4.22, samples=64 write: IOPS=12, BW=194KiB/s (199kB/s)(6368KiB/32817msec); 0 zone resets clat (usec): min=1465, max=291179, avg=37586.73, stdev=38508.76 lat (usec): min=1466, max=291183, avg=37589.09, stdev=38508.63 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1909], 10.00th=[ 3752], 20.00th=[ 7570], | 30.00th=[ 11207], 40.00th=[ 16909], 50.00th=[ 27132], 60.00th=[ 33817], | 70.00th=[ 45351], 80.00th=[ 62129], 90.00th=[ 88605], 95.00th=[109577], | 99.00th=[166724], 99.50th=[235930], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 31, max= 384, per=26.81%, avg=193.00, stdev=70.33, samples=64 iops : min= 1, max= 24, avg=11.34, stdev= 4.46, samples=64 lat (usec) : 50=0.65%, 100=5.08%, 250=0.39% lat (msec) : 2=2.73%, 4=2.99%, 10=8.46%, 20=10.03%, 50=34.64% lat (msec) : 100=28.52%, 250=6.38%, 500=0.13% cpu : usr=0.06%, sys=5.17%, ctx=1648, 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=179872: Wed Sep 9 02:39:06 2026 read: IOPS=10, BW=164KiB/s (168kB/s)(5744KiB/34961msec) clat (usec): min=39, max=246137, avg=51846.93, stdev=33287.06 lat (usec): min=39, max=246138, avg=51849.44, stdev=33287.13 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 67], 10.00th=[ 11207], 20.00th=[ 27919], | 30.00th=[ 33817], 40.00th=[ 39060], 50.00th=[ 45351], 60.00th=[ 55313], | 70.00th=[ 62653], 80.00th=[ 76022], 90.00th=[ 92799], 95.00th=[114820], | 99.00th=[149947], 99.50th=[160433], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 31, max= 287, per=23.74%, avg=162.65, stdev=64.15, samples=68 iops : min= 1, max= 17, avg= 9.43, stdev= 4.06, samples=68 write: IOPS=11, BW=187KiB/s (192kB/s)(6544KiB/34961msec); 0 zone resets clat (usec): min=1471, max=192366, avg=39193.74, stdev=37297.48 lat (usec): min=1473, max=192368, avg=39202.05, stdev=37298.12 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2212], 10.00th=[ 3097], 20.00th=[ 5997], | 30.00th=[ 10683], 40.00th=[ 18482], 50.00th=[ 29492], 60.00th=[ 39060], | 70.00th=[ 50070], 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[113771], | 99.00th=[147850], 99.50th=[181404], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 31, max= 374, per=25.44%, avg=183.15, stdev=78.53, samples=68 iops : min= 1, max= 23, avg=10.72, stdev= 4.93, samples=68 lat (usec) : 50=0.65%, 100=2.99%, 250=0.39% lat (msec) : 2=2.60%, 4=4.95%, 10=8.33%, 20=7.68%, 50=34.90% lat (msec) : 100=29.17%, 250=8.33% cpu : usr=0.06%, sys=4.93%, ctx=1779, 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=179873: Wed Sep 9 02:39:06 2026 read: IOPS=11, BW=182KiB/s (186kB/s)(6256KiB/34415msec) clat (usec): min=37, max=183668, avg=46219.43, stdev=31384.45 lat (usec): min=37, max=183669, avg=46220.80, stdev=31384.43 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 58], 10.00th=[ 82], 20.00th=[ 21627], | 30.00th=[ 28967], 40.00th=[ 36439], 50.00th=[ 42730], 60.00th=[ 50594], | 70.00th=[ 61080], 80.00th=[ 70779], 90.00th=[ 84411], 95.00th=[ 95945], | 99.00th=[145753], 99.50th=[175113], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 44, max= 509, per=26.88%, avg=184.13, stdev=85.18, samples=67 iops : min= 2, max= 31, avg=10.78, stdev= 5.29, samples=67 write: IOPS=10, BW=175KiB/s (179kB/s)(6032KiB/34415msec); 0 zone resets clat (usec): min=1481, max=220562, avg=42457.72, stdev=41274.09 lat (usec): min=1483, max=220565, avg=42460.23, stdev=41273.84 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2442], 10.00th=[ 3785], 20.00th=[ 5604], | 30.00th=[ 10683], 40.00th=[ 21103], 50.00th=[ 33424], 60.00th=[ 43779], | 70.00th=[ 56361], 80.00th=[ 71828], 90.00th=[ 92799], 95.00th=[126354], | 99.00th=[181404], 99.50th=[208667], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 63, max= 507, per=24.64%, avg=177.38, stdev=79.93, samples=66 iops : min= 3, max= 31, avg=10.36, stdev= 5.05, samples=66 lat (usec) : 50=0.39%, 100=5.47%, 250=0.52%, 1000=0.26% lat (msec) : 2=2.08%, 4=3.78%, 10=8.59%, 20=7.42%, 50=34.11% lat (msec) : 100=30.73%, 250=6.64% cpu : usr=0.07%, sys=4.83%, ctx=1729, 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=179874: Wed Sep 9 02:39:06 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(6032KiB/34736msec) clat (usec): min=46, max=264602, avg=48158.36, stdev=37179.10 lat (usec): min=46, max=264603, avg=48159.75, stdev=37179.20 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 58], 10.00th=[ 70], 20.00th=[ 19530], | 30.00th=[ 27657], 40.00th=[ 36439], 50.00th=[ 43779], 60.00th=[ 50594], | 70.00th=[ 60031], 80.00th=[ 74974], 90.00th=[ 95945], 95.00th=[112722], | 99.00th=[185598], 99.50th=[200279], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 21, max= 447, per=25.14%, avg=172.21, stdev=83.51, samples=68 iops : min= 1, max= 27, avg=10.03, stdev= 5.22, samples=68 write: IOPS=11, BW=180KiB/s (184kB/s)(6256KiB/34736msec); 0 zone resets clat (usec): min=1377, max=276662, avg=41488.36, stdev=44132.04 lat (usec): min=1378, max=276664, avg=41490.57, stdev=44132.09 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1942], 10.00th=[ 3425], 20.00th=[ 5800], | 30.00th=[ 9896], 40.00th=[ 17171], 50.00th=[ 27395], 60.00th=[ 38536], | 70.00th=[ 54264], 80.00th=[ 68682], 90.00th=[ 96994], 95.00th=[129500], | 99.00th=[204473], 99.50th=[217056], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 62, max= 412, per=25.34%, avg=182.42, stdev=71.38, samples=67 iops : min= 3, max= 25, avg=10.67, stdev= 4.60, samples=67 lat (usec) : 50=0.39%, 100=5.73%, 250=1.56% lat (msec) : 2=2.60%, 4=3.78%, 10=9.38%, 20=8.98%, 50=31.51% lat (msec) : 100=27.34%, 250=8.46%, 500=0.26% cpu : usr=0.06%, sys=4.58%, ctx=1610, 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=685KiB/s (702kB/s), 164KiB/s-182KiB/s (168kB/s-186kB/s), io=23.4MiB (24.5MB), run=32817-34961msec WRITE: bw=721KiB/s (738kB/s), 175KiB/s-194KiB/s (179kB/s-199kB/s), io=24.6MiB (25.8MB), run=32817-34961msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179867: Wed Sep 9 02:39:18 2026 read: IOPS=7, BW=127KiB/s (130kB/s)(5920KiB/46520msec) clat (msec): min=5, max=214, avg=48.54, stdev=42.24 lat (msec): min=5, max=214, avg=48.54, stdev=42.24 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 51], 80.00th=[ 65], 90.00th=[ 112], 95.00th=[ 159], | 99.00th=[ 188], 99.50th=[ 201], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 30, max= 384, per=25.77%, avg=132.46, stdev=86.82, samples=87 iops : min= 1, max= 24, avg= 7.47, stdev= 5.53, samples=87 write: IOPS=8, BW=137KiB/s (140kB/s)(6368KiB/46520msec); 0 zone resets clat (msec): min=12, max=344, avg=71.52, stdev=47.07 lat (msec): min=12, max=344, avg=71.52, stdev=47.07 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 56], 60.00th=[ 69], | 70.00th=[ 85], 80.00th=[ 106], 90.00th=[ 144], 95.00th=[ 171], | 99.00th=[ 213], 99.50th=[ 241], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 30, max= 382, per=25.24%, avg=136.56, stdev=84.13, samples=91 iops : min= 1, max= 23, avg= 7.74, stdev= 5.35, samples=91 lat (msec) : 10=1.30%, 20=10.55%, 50=44.79%, 100=26.17%, 250=17.06% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=1.56%, ctx=1216, 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=179868: Wed Sep 9 02:39:18 2026 read: IOPS=7, BW=124KiB/s (127kB/s)(5744KiB/46442msec) clat (msec): min=7, max=307, avg=46.97, stdev=44.63 lat (msec): min=7, max=307, avg=46.98, stdev=44.63 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 70], 90.00th=[ 106], 95.00th=[ 144], | 99.00th=[ 213], 99.50th=[ 234], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 21, max= 382, per=25.40%, avg=130.55, stdev=92.15, samples=86 iops : min= 1, max= 23, avg= 7.36, stdev= 5.80, samples=86 write: IOPS=8, BW=141KiB/s (144kB/s)(6544KiB/46442msec); 0 zone resets clat (msec): min=12, max=301, avg=71.48, stdev=50.30 lat (msec): min=12, max=301, avg=71.49, stdev=50.30 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 33], | 30.00th=[ 38], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 83], 80.00th=[ 110], 90.00th=[ 138], 95.00th=[ 174], | 99.00th=[ 249], 99.50th=[ 275], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 30, max= 414, per=26.89%, avg=145.48, stdev=87.51, samples=88 iops : min= 1, max= 25, avg= 8.30, stdev= 5.55, samples=88 lat (msec) : 10=1.30%, 20=12.63%, 50=44.14%, 100=24.35%, 250=16.93% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=1.61%, ctx=1234, 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=179869: Wed Sep 9 02:39:18 2026 read: IOPS=8, BW=136KiB/s (139kB/s)(6256KiB/46060msec) clat (msec): min=6, max=220, avg=46.52, stdev=37.86 lat (msec): min=6, max=220, avg=46.52, stdev=37.86 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 51], 80.00th=[ 67], 90.00th=[ 100], 95.00th=[ 138], | 99.00th=[ 171], 99.50th=[ 211], 99.90th=[ 222], 99.95th=[ 222], | 99.99th=[ 222] bw ( KiB/s): min= 31, max= 480, per=26.85%, avg=138.00, stdev=95.79, samples=89 iops : min= 1, max= 30, avg= 7.83, stdev= 6.08, samples=89 write: IOPS=8, BW=131KiB/s (134kB/s)(6032KiB/46060msec); 0 zone resets clat (msec): min=13, max=252, avg=73.19, stdev=46.38 lat (msec): min=13, max=252, avg=73.20, stdev=46.38 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 42], 40.00th=[ 50], 50.00th=[ 61], 60.00th=[ 73], | 70.00th=[ 87], 80.00th=[ 105], 90.00th=[ 142], 95.00th=[ 165], | 99.00th=[ 239], 99.50th=[ 245], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 31, max= 381, per=23.96%, avg=129.62, stdev=73.85, samples=90 iops : min= 1, max= 23, avg= 7.30, stdev= 4.68, samples=90 lat (msec) : 10=0.52%, 20=9.24%, 50=46.09%, 100=28.26%, 250=15.76% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=1.59%, ctx=1169, 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=179870: Wed Sep 9 02:39:18 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(6032KiB/46574msec) clat (msec): min=5, max=304, avg=49.85, stdev=46.06 lat (msec): min=5, max=304, avg=49.85, stdev=46.06 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 51], 80.00th=[ 72], 90.00th=[ 116], 95.00th=[ 148], | 99.00th=[ 245], 99.50th=[ 271], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 30, max= 416, per=25.80%, avg=132.59, stdev=85.41, samples=88 iops : min= 1, max= 26, avg= 7.49, stdev= 5.41, samples=88 write: IOPS=8, BW=134KiB/s (138kB/s)(6256KiB/46574msec); 0 zone resets clat (msec): min=15, max=352, avg=70.30, stdev=45.75 lat (msec): min=15, max=352, avg=70.30, stdev=45.75 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 56], 60.00th=[ 70], | 70.00th=[ 84], 80.00th=[ 104], 90.00th=[ 131], 95.00th=[ 159], | 99.00th=[ 236], 99.50th=[ 251], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 30, max= 414, per=25.00%, avg=135.24, stdev=85.72, samples=90 iops : min= 1, max= 25, avg= 7.66, stdev= 5.43, samples=90 lat (msec) : 10=1.17%, 20=10.81%, 50=45.44%, 100=25.26%, 250=16.67% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=1.70%, ctx=1178, 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=514KiB/s (527kB/s), 124KiB/s-136KiB/s (127kB/s-139kB/s), io=23.4MiB (24.5MB), run=46060-46574msec WRITE: bw=541KiB/s (554kB/s), 131KiB/s-141KiB/s (134kB/s-144kB/s), io=24.6MiB (25.8MB), run=46060-46574msec 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=179891: Wed Sep 9 02:39:34 2026 read: IOPS=1, BW=1761KiB/s (1803kB/s)(7168KiB/4070msec) clat (usec): min=1972, max=392483, avg=218949.18, stdev=123097.38 lat (usec): min=1974, max=392485, avg=218950.50, stdev=123097.34 clat percentiles (usec): | 1.00th=[ 1975], 5.00th=[ 1975], 10.00th=[ 1975], 20.00th=[164627], | 30.00th=[204473], 40.00th=[204473], 50.00th=[210764], 60.00th=[238027], | 70.00th=[238027], 80.00th=[320865], 90.00th=[392168], 95.00th=[392168], | 99.00th=[392168], 99.50th=[392168], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 1957, max= 2951, per=53.30%, avg=2193.20, stdev=424.81, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=1, BW=1258KiB/s (1288kB/s)(5120KiB/4070msec); 0 zone resets clat (msec): min=334, max=684, avg=456.98, stdev=143.12 lat (msec): min=334, max=684, avg=457.10, stdev=143.12 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1787, max= 3771, per=43.97%, avg=2533.67, stdev=1079.18, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 250=33.33%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=18.19%, ctx=242, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179892: Wed Sep 9 02:39:34 2026 read: IOPS=0, BW=412KiB/s (421kB/s)(2048KiB/4976msec) clat (msec): min=152, max=464, avg=308.83, stdev=220.50 lat (msec): min=152, max=464, avg=308.83, stdev=220.50 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 464], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 1452, max= 1885, per=40.55%, avg=1668.50, stdev=306.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2058KiB/s (2107kB/s)(10.0MiB/4976msec); 0 zone resets clat (msec): min=101, max=1079, avg=431.16, stdev=291.44 lat (msec): min=101, max=1079, avg=431.33, stdev=291.46 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 255], 50.00th=[ 275], 60.00th=[ 309], | 70.00th=[ 542], 80.00th=[ 550], 90.00th=[ 701], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1452, max= 4071, per=49.59%, avg=2857.17, stdev=1148.64, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=25.00%, 500=41.67%, 750=25.00%, 2000=8.33% cpu : usr=0.06%, sys=15.68%, ctx=165, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179893: Wed Sep 9 02:39:34 2026 read: IOPS=1, BW=1638KiB/s (1677kB/s)(6144KiB/3751msec) clat (usec): min=934, max=372032, avg=141012.45, stdev=167859.45 lat (usec): min=936, max=372033, avg=141013.96, stdev=167859.31 clat percentiles (usec): | 1.00th=[ 938], 5.00th=[ 938], 10.00th=[ 938], 20.00th=[ 1696], | 30.00th=[ 1696], 40.00th=[ 1827], 50.00th=[ 1827], 60.00th=[158335], | 70.00th=[312476], 80.00th=[312476], 90.00th=[371196], 95.00th=[371196], | 99.00th=[371196], 99.50th=[371196], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 1787, max= 1957, per=45.60%, avg=1876.33, stdev=85.33, samples=3 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=3 write: IOPS=1, BW=1638KiB/s (1677kB/s)(6144KiB/3751msec); 0 zone resets clat (msec): min=135, max=811, avg=459.22, stdev=256.09 lat (msec): min=135, max=811, avg=459.36, stdev=256.14 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 550], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1452, max= 2043, per=31.83%, avg=1834.25, stdev=262.89, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 1000=8.33% lat (msec) : 2=16.67%, 250=25.00%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=14.99%, ctx=141, 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=179894: Wed Sep 9 02:39:34 2026 read: IOPS=1, BW=1154KiB/s (1182kB/s)(5120KiB/4436msec) clat (usec): min=465, max=431342, avg=133144.20, stdev=194482.99 lat (usec): min=467, max=431343, avg=133145.43, stdev=194482.81 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], 20.00th=[ 465], | 30.00th=[ 529], 40.00th=[ 529], 50.00th=[ 1270], 60.00th=[ 1270], | 70.00th=[231736], 80.00th=[231736], 90.00th=[429917], 95.00th=[429917], | 99.00th=[429917], 99.50th=[429917], 99.90th=[429917], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 1885, max= 5988, per=95.66%, avg=3936.50, stdev=2901.26, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1616KiB/s (1655kB/s)(7168KiB/4436msec); 0 zone resets clat (msec): min=186, max=879, avg=501.82, stdev=274.16 lat (msec): min=186, max=879, avg=502.16, stdev=273.90 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 222], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 401], 60.00th=[ 684], | 70.00th=[ 684], 80.00th=[ 768], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1787, max= 4071, per=40.68%, avg=2343.80, stdev=969.39, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=25.00%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=14.90%, ctx=255, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4116KiB/s (4215kB/s), 412KiB/s-1761KiB/s (421kB/s-1803kB/s), io=20.0MiB (20.0MB), run=3751-4976msec WRITE: bw=5762KiB/s (5900kB/s), 1258KiB/s-2058KiB/s (1288kB/s-2107kB/s), io=28.0MiB (29.4MB), run=3751-4976msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179887: Wed Sep 9 02:39:34 2026 read: IOPS=2, BW=2263KiB/s (2318kB/s)(7168KiB/3167msec) clat (msec): min=91, max=417, avg=211.51, stdev=127.89 lat (msec): min=91, max=417, avg=211.51, stdev=127.89 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 107], | 30.00th=[ 120], 40.00th=[ 120], 50.00th=[ 148], 60.00th=[ 264], | 70.00th=[ 264], 80.00th=[ 334], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 2019, max= 4123, per=65.43%, avg=2551.00, stdev=1048.04, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1617KiB/s (1655kB/s)(5120KiB/3167msec); 0 zone resets clat (msec): min=145, max=567, avg=316.78, stdev=215.86 lat (msec): min=145, max=567, avg=317.23, stdev=215.64 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 180], 60.00th=[ 180], | 70.00th=[ 542], 80.00th=[ 542], 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= 2019, max= 5885, per=60.62%, avg=3309.00, stdev=2230.88, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=16.67% cpu : usr=0.03%, sys=5.24%, ctx=65, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179888: Wed Sep 9 02:39:34 2026 read: IOPS=0, BW=390KiB/s (399kB/s)(2048KiB/5252msec) clat (msec): min=124, max=164, avg=144.67, stdev=27.88 lat (msec): min=124, max=164, avg=144.67, stdev=27.88 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 126], 10.00th=[ 126], 20.00th=[ 126], | 30.00th=[ 126], 40.00th=[ 126], 50.00th=[ 126], 60.00th=[ 165], | 70.00th=[ 165], 80.00th=[ 165], 90.00th=[ 165], 95.00th=[ 165], | 99.00th=[ 165], 99.50th=[ 165], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 1456, max= 2019, per=44.56%, avg=1737.50, stdev=398.10, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1950KiB/s (1997kB/s)(10.0MiB/5252msec); 0 zone resets clat (msec): min=134, max=1127, avg=479.38, stdev=309.80 lat (msec): min=134, max=1127, avg=479.55, stdev=309.86 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 182], | 30.00th=[ 259], 40.00th=[ 334], 50.00th=[ 414], 60.00th=[ 422], | 70.00th=[ 422], 80.00th=[ 709], 90.00th=[ 802], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 1961, max= 4096, per=43.22%, avg=2359.50, stdev=851.12, samples=6 iops : min= 1, max= 4, avg= 1.50, stdev= 1.22, samples=6 lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=7.29%, ctx=119, 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=179889: Wed Sep 9 02:39:34 2026 read: IOPS=1, BW=1241KiB/s (1271kB/s)(6144KiB/4949msec) clat (msec): min=76, max=770, avg=415.26, stdev=268.60 lat (msec): min=76, max=770, avg=415.26, stdev=268.60 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 550], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1957, max= 2043, per=51.62%, avg=2012.50, stdev=38.83, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1241KiB/s (1271kB/s)(6144KiB/4949msec); 0 zone resets clat (msec): min=215, max=562, avg=396.01, stdev=148.23 lat (msec): min=215, max=562, avg=396.39, stdev=148.35 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 451], | 70.00th=[ 514], 80.00th=[ 514], 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= 1932, max= 4071, per=46.17%, avg=2520.50, stdev=1034.93, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=33.33%, 1000=8.33% cpu : usr=0.00%, sys=3.62%, ctx=71, 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=179890: Wed Sep 9 02:39:34 2026 read: IOPS=1, BW=1189KiB/s (1217kB/s)(5120KiB/4307msec) clat (msec): min=95, max=650, avg=320.18, stdev=240.39 lat (msec): min=95, max=650, avg=320.18, stdev=240.39 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 95], | 30.00th=[ 115], 40.00th=[ 115], 50.00th=[ 262], 60.00th=[ 262], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 2023, max= 4079, per=69.63%, avg=2715.00, stdev=1181.30, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1664KiB/s (1704kB/s)(7168KiB/4307msec); 0 zone resets clat (msec): min=92, max=924, avg=351.27, stdev=288.10 lat (msec): min=92, max=924, avg=351.47, stdev=288.05 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 146], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 259], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 531], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 1414, max= 6059, per=61.44%, avg=3353.75, stdev=2096.55, samples=4 iops : min= 1, max= 5, avg= 2.50, stdev= 1.91, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=7.11%, ctx=140, 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=3899KiB/s (3993kB/s), 390KiB/s-2263KiB/s (399kB/s-2318kB/s), io=20.0MiB (20.0MB), run=3167-5252msec WRITE: bw=5459KiB/s (5590kB/s), 1241KiB/s-1950KiB/s (1271kB/s-1997kB/s), io=28.0MiB (29.4MB), run=3167-5252msec 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=179906: Wed Sep 9 02:39:49 2026 read: IOPS=1, BW=5385KiB/s (5514kB/s)(12.0MiB/2282msec) clat (msec): min=645, max=828, avg=720.84, stdev=95.92 lat (msec): min=645, max=828, avg=720.84, stdev=95.92 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=15.52%, ctx=358, 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=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=179907: Wed Sep 9 02:39:49 2026 read: IOPS=0, BW=1448KiB/s (1483kB/s)(4096KiB/2829msec) clat (nsec): min=881466k, max=881466k, avg=881466378.00, stdev= 0.00 lat (nsec): min=881467k, max=881467k, avg=881467319.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 885], 5.00th=[ 885], 10.00th=[ 885], 20.00th=[ 885], | 30.00th=[ 885], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2896KiB/s (2965kB/s)(8192KiB/2829msec); 0 zone resets clat (msec): min=903, max=973, avg=938.50, stdev=49.40 lat (msec): min=903, max=973, avg=938.76, stdev=49.27 clat percentiles (msec): | 1.00th=[ 902], 5.00th=[ 902], 10.00th=[ 902], 20.00th=[ 902], | 30.00th=[ 902], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 978], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 8175, max= 8175, per=82.41%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=5.30%, ctx=133, 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=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=179908: Wed Sep 9 02:39:49 2026 write: IOPS=0, BW=3720KiB/s (3810kB/s)(12.0MiB/3303msec); 0 zone resets clat (msec): min=214, max=1947, avg=1092.89, stdev=866.67 lat (msec): min=215, max=1948, avg=1093.21, stdev=866.76 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 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= 8175, max= 8192, per=82.49%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.85%, ctx=45, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=179909: Wed Sep 9 02:39:49 2026 write: IOPS=1, BW=4404KiB/s (4510kB/s)(12.0MiB/2790msec); 0 zone resets clat (msec): min=596, max=1387, avg=896.23, stdev=428.45 lat (msec): min=597, max=1387, avg=896.99, stdev=428.22 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 8175, max= 8175, per=82.41%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.91%, ctx=66, 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=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=5791KiB/s (5930kB/s), 1448KiB/s-5385KiB/s (1483kB/s-5514kB/s), io=16.0MiB (16.8MB), run=2282-2829msec WRITE: bw=9921KiB/s (10.2MB/s), 2896KiB/s-4404KiB/s (2965kB/s-4510kB/s), io=32.0MiB (33.6MB), run=2790-3303msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179901: Wed Sep 9 02:39:49 2026 read: IOPS=1, BW=4247KiB/s (4349kB/s)(12.0MiB/2893msec) clat (msec): min=355, max=1418, avg=935.20, stdev=537.68 lat (msec): min=355, max=1418, avg=935.20, stdev=537.68 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 1028], 50.00th=[ 1028], 60.00th=[ 1028], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.01%, ctx=61, 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=179903: Wed Sep 9 02:39:49 2026 read: IOPS=0, BW=1302KiB/s (1333kB/s)(4096KiB/3147msec) clat (nsec): min=437365k, max=437365k, avg=437365279.00, stdev= 0.00 lat (nsec): min=437368k, max=437368k, avg=437367661.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 439], 95.00th=[ 439], | 99.00th=[ 439], 99.50th=[ 439], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 7984, max= 7984, per=100.00%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2603KiB/s (2666kB/s)(8192KiB/3147msec); 0 zone resets clat (msec): min=844, max=1672, avg=1258.84, stdev=585.68 lat (msec): min=845, max=1673, avg=1259.43, stdev=585.98 clat percentiles (msec): | 1.00th=[ 844], 5.00th=[ 844], 10.00th=[ 844], 20.00th=[ 844], | 30.00th=[ 844], 40.00th=[ 844], 50.00th=[ 844], 60.00th=[ 1670], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 8159, max= 8159, per=94.27%, avg=8159.00, 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=4.67%, ctx=86, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179904: Wed Sep 9 02:39:49 2026 write: IOPS=0, BW=3246KiB/s (3324kB/s)(12.0MiB/3786msec); 0 zone resets clat (msec): min=173, max=2609, avg=1176.71, stdev=1273.67 lat (msec): min=173, max=2609, avg=1177.20, stdev=1273.53 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 2601], 80.00th=[ 2601], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 8110, max= 8110, per=93.70%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=4.57%, ctx=67, 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=179905: Wed Sep 9 02:39:49 2026 write: IOPS=1, BW=4806KiB/s (4921kB/s)(12.0MiB/2557msec); 0 zone resets clat (msec): min=258, max=1774, avg=830.94, stdev=823.24 lat (msec): min=260, max=1774, avg=831.65, stdev=822.90 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 6564, max= 8159, per=85.05%, avg=7361.50, stdev=1127.84, 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=0.04%, sys=5.67%, ctx=51, 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=5206KiB/s (5331kB/s), 1302KiB/s-4247KiB/s (1333kB/s-4349kB/s), io=16.0MiB (16.8MB), run=2893-3147msec WRITE: bw=8655KiB/s (8863kB/s), 2603KiB/s-4806KiB/s (2666kB/s-4921kB/s), io=32.0MiB (33.6MB), run=2557-3786msec