== sanity test 398b: DIO and buffer IO race ============== 10:14:25 (1786716865) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.20855 s, 6.1 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=178996: Fri Aug 14 10:17:09 2026 read: IOPS=10, BW=42.4KiB/s (43.4kB/s)(5992KiB/141313msec) clat (usec): min=46, max=1022.3k, avg=53437.67, stdev=42142.00 lat (usec): min=47, max=1022.3k, avg=53440.27, stdev=42142.15 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 15926], 10.00th=[ 20317], | 20.00th=[ 27395], 30.00th=[ 32637], 40.00th=[ 39060], | 50.00th=[ 44827], 60.00th=[ 53216], 70.00th=[ 62129], | 80.00th=[ 73925], 90.00th=[ 94897], 95.00th=[ 114820], | 99.00th=[ 189793], 99.50th=[ 217056], 99.90th=[ 254804], | 99.95th=[1019216], 99.99th=[1019216] bw ( KiB/s): min= 5, max= 96, per=25.02%, avg=42.28, stdev=16.28, samples=275 iops : min= 1, max= 24, avg= 9.93, stdev= 4.14, samples=275 write: IOPS=11, BW=44.6KiB/s (45.6kB/s)(6296KiB/141313msec); 0 zone resets clat (usec): min=1230, max=263529, avg=38583.04, stdev=38026.44 lat (usec): min=1231, max=263531, avg=38587.70, stdev=38024.08 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1631], 10.00th=[ 2868], 20.00th=[ 5473], | 30.00th=[ 9896], 40.00th=[ 19792], 50.00th=[ 28967], 60.00th=[ 37487], | 70.00th=[ 48497], 80.00th=[ 67634], 90.00th=[ 90702], 95.00th=[112722], | 99.00th=[164627], 99.50th=[187696], 99.90th=[254804], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 7, max= 103, per=25.05%, avg=44.34, stdev=20.20, samples=276 iops : min= 1, max= 25, avg=10.44, stdev= 5.07, samples=276 lat (usec) : 50=0.03%, 100=1.11%, 250=0.13%, 750=0.03%, 1000=0.10% lat (msec) : 2=3.68%, 4=3.91%, 10=7.98%, 20=8.40%, 50=38.57% lat (msec) : 100=27.93%, 250=8.01%, 500=0.10%, 2000=0.03% cpu : usr=0.07%, sys=4.97%, ctx=7066, 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=178997: Fri Aug 14 10:17:09 2026 read: IOPS=10, BW=41.9KiB/s (42.9kB/s)(5940KiB/141784msec) clat (usec): min=45, max=235999, avg=51649.06, stdev=30760.87 lat (usec): min=45, max=236000, avg=51652.61, stdev=30759.98 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 16188], 10.00th=[ 20841], 20.00th=[ 27132], | 30.00th=[ 33162], 40.00th=[ 39584], 50.00th=[ 45351], 60.00th=[ 52167], | 70.00th=[ 61604], 80.00th=[ 73925], 90.00th=[ 91751], 95.00th=[107480], | 99.00th=[147850], 99.50th=[168821], 99.90th=[233833], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 7, max= 94, per=24.76%, avg=41.85, stdev=16.10, samples=276 iops : min= 1, max= 23, avg= 9.82, stdev= 4.05, samples=276 write: IOPS=11, BW=44.8KiB/s (45.8kB/s)(6348KiB/141784msec); 0 zone resets clat (usec): min=1181, max=906356, avg=40691.92, stdev=44757.12 lat (usec): min=1182, max=906358, avg=40697.60, stdev=44757.58 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1795], 10.00th=[ 2999], 20.00th=[ 6128], | 30.00th=[ 10159], 40.00th=[ 20317], 50.00th=[ 29492], 60.00th=[ 40109], | 70.00th=[ 53216], 80.00th=[ 68682], 90.00th=[ 93848], 95.00th=[113771], | 99.00th=[164627], 99.50th=[200279], 99.90th=[387974], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 7, max= 102, per=25.02%, avg=44.29, stdev=18.86, samples=278 iops : min= 1, max= 25, avg=10.43, stdev= 4.74, samples=278 lat (usec) : 50=0.03%, 100=1.17%, 250=0.13%, 500=0.07%, 1000=0.03% lat (msec) : 2=3.06%, 4=3.91%, 10=8.66%, 20=7.68%, 50=37.89% lat (msec) : 100=29.95%, 250=7.32%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=5.02%, ctx=7058, 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=178998: Fri Aug 14 10:17:09 2026 read: IOPS=10, BW=42.5KiB/s (43.5kB/s)(6028KiB/141784msec) clat (usec): min=45, max=312122, avg=51746.24, stdev=32263.42 lat (usec): min=46, max=312124, avg=51762.79, stdev=32270.69 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 15139], 10.00th=[ 20841], 20.00th=[ 27395], | 30.00th=[ 32637], 40.00th=[ 38536], 50.00th=[ 45351], 60.00th=[ 53216], | 70.00th=[ 61604], 80.00th=[ 72877], 90.00th=[ 91751], 95.00th=[109577], | 99.00th=[149947], 99.50th=[189793], 99.90th=[295699], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 87, per=25.09%, avg=42.39, stdev=16.09, samples=276 iops : min= 1, max= 21, avg= 9.96, stdev= 4.05, samples=276 write: IOPS=11, BW=44.2KiB/s (45.2kB/s)(6260KiB/141784msec); 0 zone resets clat (usec): min=1078, max=946221, avg=40369.59, stdev=44698.43 lat (usec): min=1079, max=946225, avg=40373.26, stdev=44697.22 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1909], 10.00th=[ 3064], 20.00th=[ 5932], | 30.00th=[ 10421], 40.00th=[ 21627], 50.00th=[ 30802], 60.00th=[ 40633], | 70.00th=[ 51643], 80.00th=[ 66847], 90.00th=[ 91751], 95.00th=[113771], | 99.00th=[160433], 99.50th=[219153], 99.90th=[291505], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 7, max= 103, per=24.74%, avg=43.80, stdev=18.83, samples=277 iops : min= 1, max= 25, avg=10.31, stdev= 4.75, samples=277 lat (usec) : 50=0.03%, 100=1.24%, 250=0.33%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=2.83%, 4=4.00%, 10=8.37%, 20=6.84%, 50=38.70% lat (msec) : 100=29.95%, 250=7.49%, 500=0.10%, 1000=0.03% cpu : usr=0.06%, sys=4.89%, ctx=7078, 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=178999: Fri Aug 14 10:17:09 2026 read: IOPS=10, BW=43.3KiB/s (44.3kB/s)(6052KiB/139834msec) clat (usec): min=34, max=309039, avg=50772.50, stdev=32059.32 lat (usec): min=34, max=309041, avg=50774.46, stdev=32059.05 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 13435], 10.00th=[ 20055], 20.00th=[ 26608], | 30.00th=[ 32375], 40.00th=[ 38011], 50.00th=[ 44303], 60.00th=[ 52167], | 70.00th=[ 60031], 80.00th=[ 71828], 90.00th=[ 89654], 95.00th=[111674], | 99.00th=[145753], 99.50th=[183501], 99.90th=[278922], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7, max= 103, per=25.62%, avg=43.29, stdev=17.49, samples=273 iops : min= 1, max= 25, avg=10.18, stdev= 4.41, samples=273 write: IOPS=11, BW=44.6KiB/s (45.7kB/s)(6236KiB/139834msec); 0 zone resets clat (usec): min=1198, max=1037.4k, avg=40058.77, stdev=46629.06 lat (usec): min=1201, max=1037.4k, avg=40062.80, stdev=46628.26 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1598], 10.00th=[ 2278], | 20.00th=[ 5407], 30.00th=[ 9765], 40.00th=[ 19530], | 50.00th=[ 28967], 60.00th=[ 38011], 70.00th=[ 51643], | 80.00th=[ 68682], 90.00th=[ 94897], 95.00th=[ 114820], | 99.00th=[ 175113], 99.50th=[ 193987], 99.90th=[ 283116], | 99.95th=[1035994], 99.99th=[1035994] bw ( KiB/s): min= 7, max= 119, per=25.20%, avg=44.60, stdev=19.81, samples=273 iops : min= 1, max= 29, avg=10.51, stdev= 4.99, samples=273 lat (usec) : 50=0.03%, 100=1.46%, 250=0.10%, 500=0.10%, 1000=0.03% lat (msec) : 2=4.56%, 4=3.42%, 10=7.85%, 20=7.94%, 50=37.86% lat (msec) : 100=29.07%, 250=7.39%, 500=0.16%, 2000=0.03% cpu : usr=0.09%, sys=5.17%, ctx=7088, 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=169KiB/s (173kB/s), 41.9KiB/s-43.3KiB/s (42.9kB/s-44.3kB/s), io=23.4MiB (24.6MB), run=139834-141784msec WRITE: bw=177KiB/s (182kB/s), 44.2KiB/s-44.8KiB/s (45.2kB/s-45.8kB/s), io=24.6MiB (25.7MB), run=139834-141784msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178992: Fri Aug 14 10:17:55 2026 read: IOPS=7, BW=31.8KiB/s (32.6kB/s)(5992KiB/188243msec) clat (msec): min=6, max=1045, avg=50.54, stdev=49.26 lat (msec): min=6, max=1045, avg=50.55, stdev=49.26 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 55], 80.00th=[ 75], 90.00th=[ 111], 95.00th=[ 142], | 99.00th=[ 207], 99.50th=[ 226], 99.90th=[ 296], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 135, per=25.74%, avg=32.70, stdev=22.02, samples=355 iops : min= 1, max= 33, avg= 7.48, stdev= 5.52, samples=355 write: IOPS=8, BW=33.4KiB/s (34.2kB/s)(6296KiB/188243msec); 0 zone resets clat (msec): min=11, max=422, avg=71.14, stdev=49.45 lat (msec): min=11, max=422, avg=71.14, stdev=49.44 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 57], 60.00th=[ 68], | 70.00th=[ 83], 80.00th=[ 104], 90.00th=[ 133], 95.00th=[ 165], | 99.00th=[ 251], 99.50th=[ 305], 99.90th=[ 384], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 111, per=24.92%, avg=33.14, stdev=20.26, samples=368 iops : min= 1, max= 27, avg= 7.58, stdev= 5.08, samples=368 lat (msec) : 10=1.20%, 20=9.99%, 50=44.01%, 100=27.83%, 250=16.24% lat (msec) : 500=0.68%, 2000=0.03% cpu : usr=0.06%, sys=2.05%, ctx=5132, 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=178993: Fri Aug 14 10:17:55 2026 read: IOPS=7, BW=31.8KiB/s (32.6kB/s)(5940KiB/186783msec) clat (msec): min=6, max=958, avg=49.86, stdev=48.72 lat (msec): min=6, max=958, avg=49.86, stdev=48.72 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 70], 90.00th=[ 108], 95.00th=[ 144], | 99.00th=[ 213], 99.50th=[ 239], 99.90th=[ 355], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 135, per=25.83%, avg=32.80, stdev=22.26, samples=351 iops : min= 1, max= 33, avg= 7.50, stdev= 5.57, samples=351 write: IOPS=8, BW=33.0KiB/s (34.8kB/s)(6348KiB/186783msec); 0 zone resets clat (msec): min=13, max=358, avg=70.67, stdev=46.01 lat (msec): min=13, max=358, avg=70.67, stdev=46.01 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 57], 60.00th=[ 67], | 70.00th=[ 84], 80.00th=[ 104], 90.00th=[ 134], 95.00th=[ 161], | 99.00th=[ 218], 99.50th=[ 266], 99.90th=[ 321], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 117, per=25.30%, avg=33.65, stdev=20.04, samples=366 iops : min= 1, max= 29, avg= 7.72, stdev= 5.04, samples=366 lat (msec) : 10=1.14%, 20=9.70%, 50=44.17%, 100=28.22%, 250=16.24% lat (msec) : 500=0.49%, 1000=0.03% cpu : usr=0.07%, sys=2.15%, ctx=5019, 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=178994: Fri Aug 14 10:17:55 2026 read: IOPS=8, BW=32.2KiB/s (32.9kB/s)(6028KiB/187458msec) clat (msec): min=6, max=396, avg=49.38, stdev=42.04 lat (msec): min=6, max=396, avg=49.39, stdev=42.04 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 53], 80.00th=[ 72], 90.00th=[ 108], 95.00th=[ 144], | 99.00th=[ 190], 99.50th=[ 228], 99.90th=[ 292], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 134, per=25.55%, avg=32.45, stdev=21.75, samples=359 iops : min= 1, max= 33, avg= 7.42, stdev= 5.46, samples=359 write: IOPS=8, BW=33.4KiB/s (34.2kB/s)(6260KiB/187458msec); 0 zone resets clat (msec): min=12, max=1011, avg=71.87, stdev=54.82 lat (msec): min=12, max=1011, avg=71.87, stdev=54.81 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 48], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 84], 80.00th=[ 105], 90.00th=[ 138], 95.00th=[ 165], | 99.00th=[ 253], 99.50th=[ 292], 99.90th=[ 493], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 95, per=25.01%, avg=33.27, stdev=20.20, samples=364 iops : min= 1, max= 23, avg= 7.62, stdev= 5.06, samples=364 lat (msec) : 10=1.11%, 20=9.38%, 50=45.31%, 100=27.64%, 250=15.79% lat (msec) : 500=0.75%, 2000=0.03% cpu : usr=0.06%, sys=2.03%, ctx=5010, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178995: Fri Aug 14 10:17:55 2026 read: IOPS=8, BW=32.3KiB/s (33.1kB/s)(6052KiB/187432msec) clat (msec): min=6, max=263, avg=49.88, stdev=41.02 lat (msec): min=6, max=263, avg=49.88, stdev=41.02 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 54], 80.00th=[ 74], 90.00th=[ 112], 95.00th=[ 144], | 99.00th=[ 190], 99.50th=[ 209], 99.90th=[ 253], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 7, max= 126, per=26.12%, avg=33.17, stdev=21.42, samples=353 iops : min= 1, max= 31, avg= 7.60, stdev= 5.38, samples=353 write: IOPS=8, BW=33.3KiB/s (34.1kB/s)(6236KiB/187432msec); 0 zone resets clat (msec): min=13, max=1021, avg=71.47, stdev=55.03 lat (msec): min=13, max=1021, avg=71.48, stdev=55.03 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 67], | 70.00th=[ 85], 80.00th=[ 105], 90.00th=[ 132], 95.00th=[ 163], | 99.00th=[ 247], 99.50th=[ 321], 99.90th=[ 485], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 95, per=24.99%, avg=33.24, stdev=19.92, samples=363 iops : min= 1, max= 23, avg= 7.61, stdev= 5.00, samples=363 lat (msec) : 10=0.55%, 20=10.12%, 50=45.08%, 100=27.25%, 250=16.44% lat (msec) : 500=0.52%, 2000=0.03% cpu : usr=0.07%, sys=2.08%, ctx=5086, 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=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=128KiB/s (131kB/s), 31.8KiB/s-32.3KiB/s (32.6kB/s-33.1kB/s), io=23.4MiB (24.6MB), run=186783-188243msec WRITE: bw=134KiB/s (137kB/s), 33.3KiB/s-33.0KiB/s (34.1kB/s-34.8kB/s), io=24.6MiB (25.7MB), run=186783-188243msec 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=179045: Fri Aug 14 10:18:42 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(5920KiB/34947msec) clat (usec): min=48, max=236252, avg=49126.12, stdev=32596.37 lat (usec): min=48, max=236253, avg=49131.67, stdev=32600.71 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 71], 10.00th=[ 16909], 20.00th=[ 25297], | 30.00th=[ 32113], 40.00th=[ 38536], 50.00th=[ 45351], 60.00th=[ 50594], | 70.00th=[ 58983], 80.00th=[ 70779], 90.00th=[ 83362], 95.00th=[104334], | 99.00th=[168821], 99.50th=[219153], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 57, max= 380, per=24.72%, avg=169.32, stdev=70.88, samples=69 iops : min= 3, max= 23, avg= 9.75, stdev= 4.48, samples=69 write: IOPS=11, BW=182KiB/s (187kB/s)(6368KiB/34947msec); 0 zone resets clat (usec): min=1755, max=265018, avg=40794.43, stdev=38016.24 lat (usec): min=1757, max=265020, avg=40796.80, stdev=38016.26 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2638], 10.00th=[ 3884], 20.00th=[ 6980], | 30.00th=[ 13173], 40.00th=[ 22938], 50.00th=[ 32375], 60.00th=[ 41681], | 70.00th=[ 49546], 80.00th=[ 68682], 90.00th=[ 91751], 95.00th=[120062], | 99.00th=[168821], 99.50th=[175113], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 31, max= 478, per=26.00%, avg=187.46, stdev=83.38, samples=67 iops : min= 1, max= 29, avg=10.88, stdev= 5.21, samples=67 lat (usec) : 50=0.13%, 100=3.52%, 250=0.39%, 750=0.13% lat (msec) : 2=1.04%, 4=4.30%, 10=8.20%, 20=6.90%, 50=40.76% lat (msec) : 100=27.73%, 250=6.77%, 500=0.13% cpu : usr=0.08%, sys=5.19%, ctx=1846, 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=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=179046: Fri Aug 14 10:18:42 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(5744KiB/34521msec) clat (usec): min=45, max=234587, avg=51101.94, stdev=32584.32 lat (usec): min=45, max=234588, avg=51140.78, stdev=32625.06 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 635], 10.00th=[ 21365], 20.00th=[ 26608], | 30.00th=[ 34341], 40.00th=[ 38536], 50.00th=[ 44303], 60.00th=[ 51119], | 70.00th=[ 61080], 80.00th=[ 70779], 90.00th=[ 86508], 95.00th=[108528], | 99.00th=[173016], 99.50th=[219153], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 28, max= 319, per=24.27%, avg=166.26, stdev=65.49, samples=68 iops : min= 1, max= 19, avg= 9.56, stdev= 4.11, samples=68 write: IOPS=11, BW=190KiB/s (194kB/s)(6544KiB/34521msec); 0 zone resets clat (usec): min=1863, max=225612, avg=39253.05, stdev=37802.43 lat (usec): min=1864, max=225615, avg=39256.03, stdev=37802.58 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 2835], 10.00th=[ 4146], 20.00th=[ 7570], | 30.00th=[ 10552], 40.00th=[ 18220], 50.00th=[ 28443], 60.00th=[ 36963], | 70.00th=[ 49021], 80.00th=[ 69731], 90.00th=[ 92799], 95.00th=[115868], | 99.00th=[160433], 99.50th=[175113], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 31, max= 443, per=26.20%, avg=188.93, stdev=84.99, samples=68 iops : min= 1, max= 27, avg=10.99, stdev= 5.37, samples=68 lat (usec) : 50=0.13%, 100=1.82%, 500=0.26%, 750=0.13% lat (msec) : 2=0.78%, 4=4.04%, 10=10.42%, 20=8.59%, 50=38.54% lat (msec) : 100=28.13%, 250=7.16% cpu : usr=0.06%, sys=5.48%, ctx=1843, 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=179047: Fri Aug 14 10:18:42 2026 read: IOPS=11, BW=181KiB/s (186kB/s)(6256KiB/34506msec) clat (usec): min=52, max=234541, avg=48663.89, stdev=31721.45 lat (usec): min=53, max=234542, avg=48667.84, stdev=31720.14 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 76], 10.00th=[ 15926], 20.00th=[ 26084], | 30.00th=[ 31589], 40.00th=[ 37487], 50.00th=[ 45351], 60.00th=[ 50594], | 70.00th=[ 57410], 80.00th=[ 68682], 90.00th=[ 86508], 95.00th=[110625], | 99.00th=[156238], 99.50th=[162530], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 383, per=26.52%, avg=181.65, stdev=70.63, samples=68 iops : min= 1, max= 23, avg=10.53, stdev= 4.44, samples=68 write: IOPS=10, BW=175KiB/s (179kB/s)(6032KiB/34506msec); 0 zone resets clat (usec): min=1971, max=328101, avg=40035.79, stdev=42718.56 lat (usec): min=1973, max=328104, avg=40038.18, stdev=42718.60 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 18], 50.00th=[ 29], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 64], 90.00th=[ 93], 95.00th=[ 126], | 99.00th=[ 209], 99.50th=[ 268], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 414, per=24.00%, avg=173.07, stdev=83.96, samples=68 iops : min= 1, max= 25, avg=10.00, stdev= 5.28, samples=68 lat (usec) : 100=3.26%, 250=0.91%, 500=0.39% lat (msec) : 2=0.26%, 4=4.43%, 10=9.38%, 20=8.20%, 50=38.54% lat (msec) : 100=27.21%, 250=7.16%, 500=0.26% cpu : usr=0.06%, sys=5.43%, ctx=1923, 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=179048: Fri Aug 14 10:18:42 2026 read: IOPS=11, BW=176KiB/s (181kB/s)(6032KiB/34179msec) clat (usec): min=42, max=180607, avg=50172.78, stdev=32262.15 lat (usec): min=42, max=180609, avg=50174.52, stdev=32262.09 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 68], 10.00th=[ 14353], 20.00th=[ 26084], | 30.00th=[ 32375], 40.00th=[ 38536], 50.00th=[ 45876], 60.00th=[ 54264], | 70.00th=[ 63177], 80.00th=[ 72877], 90.00th=[ 87557], 95.00th=[110625], | 99.00th=[149947], 99.50th=[179307], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 31, max= 351, per=25.60%, avg=175.33, stdev=68.37, samples=67 iops : min= 1, max= 21, avg=10.13, stdev= 4.31, samples=67 write: IOPS=11, BW=183KiB/s (187kB/s)(6256KiB/34179msec); 0 zone resets clat (usec): min=1677, max=258598, avg=38514.99, stdev=38226.39 lat (usec): min=1679, max=258598, avg=38518.72, stdev=38226.50 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 3294], 10.00th=[ 4621], 20.00th=[ 8029], | 30.00th=[ 11338], 40.00th=[ 19268], 50.00th=[ 27132], 60.00th=[ 34866], | 70.00th=[ 46400], 80.00th=[ 63177], 90.00th=[ 95945], 95.00th=[119014], | 99.00th=[156238], 99.50th=[208667], 99.90th=[258999], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 61, max= 374, per=25.40%, avg=183.12, stdev=76.79, samples=67 iops : min= 3, max= 23, avg=10.64, stdev= 4.88, samples=67 lat (usec) : 50=0.26%, 100=3.39%, 250=0.39%, 500=0.26%, 750=0.13% lat (msec) : 2=0.65%, 4=3.39%, 10=9.38%, 20=10.68%, 50=35.29% lat (msec) : 100=28.39%, 250=7.68%, 500=0.13% cpu : usr=0.06%, sys=5.55%, ctx=1893, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=685KiB/s (702kB/s), 166KiB/s-181KiB/s (170kB/s-186kB/s), io=23.4MiB (24.5MB), run=34179-34947msec WRITE: bw=721KiB/s (738kB/s), 175KiB/s-190KiB/s (179kB/s-194kB/s), io=24.6MiB (25.8MB), run=34179-34947msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179049: Fri Aug 14 10:18:53 2026 read: IOPS=8, BW=131KiB/s (134kB/s)(5920KiB/45287msec) clat (msec): min=6, max=302, avg=46.13, stdev=42.63 lat (msec): min=6, max=302, avg=46.13, stdev=42.63 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 66], 90.00th=[ 102], 95.00th=[ 130], | 99.00th=[ 232], 99.50th=[ 257], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 30, max= 446, per=24.95%, avg=131.76, stdev=91.78, samples=87 iops : min= 1, max= 27, avg= 7.43, stdev= 5.74, samples=87 write: IOPS=8, BW=141KiB/s (144kB/s)(6368KiB/45287msec); 0 zone resets clat (msec): min=14, max=321, avg=70.24, stdev=53.14 lat (msec): min=14, max=321, avg=70.25, stdev=53.14 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 53], 60.00th=[ 63], | 70.00th=[ 81], 80.00th=[ 105], 90.00th=[ 140], 95.00th=[ 174], | 99.00th=[ 288], 99.50th=[ 305], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 30, max= 384, per=25.59%, avg=142.29, stdev=89.59, samples=87 iops : min= 1, max= 24, avg= 8.08, stdev= 5.67, samples=87 lat (msec) : 10=0.91%, 20=13.54%, 50=45.18%, 100=24.35%, 250=14.71% lat (msec) : 500=1.30% cpu : usr=0.07%, sys=2.05%, ctx=1245, 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=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=179050: Fri Aug 14 10:18:53 2026 read: IOPS=7, BW=127KiB/s (130kB/s)(5744KiB/45259msec) clat (msec): min=8, max=248, avg=48.20, stdev=43.40 lat (msec): min=8, max=248, avg=48.20, stdev=43.40 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 41], | 70.00th=[ 51], 80.00th=[ 74], 90.00th=[ 112], 95.00th=[ 144], | 99.00th=[ 220], 99.50th=[ 236], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 31, max= 447, per=24.84%, avg=131.15, stdev=87.14, samples=85 iops : min= 1, max= 27, avg= 7.38, stdev= 5.46, samples=85 write: IOPS=9, BW=145KiB/s (148kB/s)(6544KiB/45259msec); 0 zone resets clat (msec): min=17, max=275, avg=67.92, stdev=47.02 lat (msec): min=17, max=275, avg=67.93, stdev=47.01 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 31], | 30.00th=[ 38], 40.00th=[ 43], 50.00th=[ 49], 60.00th=[ 61], | 70.00th=[ 81], 80.00th=[ 103], 90.00th=[ 138], 95.00th=[ 171], | 99.00th=[ 218], 99.50th=[ 241], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 477, per=25.71%, avg=142.97, stdev=89.81, samples=89 iops : min= 1, max= 29, avg= 8.12, stdev= 5.67, samples=89 lat (msec) : 10=1.17%, 20=12.11%, 50=46.61%, 100=23.70%, 250=16.15% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=2.08%, ctx=1245, 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=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=179051: Fri Aug 14 10:18:53 2026 read: IOPS=8, BW=141KiB/s (145kB/s)(6256KiB/44263msec) clat (msec): min=7, max=296, avg=44.63, stdev=41.37 lat (msec): min=7, max=296, avg=44.63, stdev=41.37 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 44], 80.00th=[ 59], 90.00th=[ 91], 95.00th=[ 124], | 99.00th=[ 220], 99.50th=[ 245], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 30, max= 448, per=27.42%, avg=144.79, stdev=101.43, samples=85 iops : min= 1, max= 28, avg= 8.24, stdev= 6.40, samples=85 write: IOPS=8, BW=136KiB/s (140kB/s)(6032KiB/44263msec); 0 zone resets clat (msec): min=11, max=284, avg=69.94, stdev=50.47 lat (msec): min=11, max=284, avg=69.94, stdev=50.47 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 36], 40.00th=[ 44], 50.00th=[ 53], 60.00th=[ 65], | 70.00th=[ 78], 80.00th=[ 102], 90.00th=[ 142], 95.00th=[ 182], | 99.00th=[ 245], 99.50th=[ 262], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 415, per=24.26%, avg=134.90, stdev=83.88, samples=87 iops : min= 1, max= 25, avg= 7.62, stdev= 5.29, samples=87 lat (msec) : 10=0.91%, 20=11.85%, 50=48.18%, 100=24.35%, 250=14.19% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=2.00%, ctx=1211, 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=179052: Fri Aug 14 10:18:53 2026 read: IOPS=8, BW=134KiB/s (137kB/s)(6032KiB/45027msec) clat (msec): min=7, max=272, avg=50.26, stdev=45.60 lat (msec): min=7, max=272, avg=50.27, stdev=45.59 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 42], | 70.00th=[ 54], 80.00th=[ 75], 90.00th=[ 121], 95.00th=[ 150], | 99.00th=[ 209], 99.50th=[ 241], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 448, per=25.44%, avg=134.33, stdev=92.61, samples=86 iops : min= 1, max= 28, avg= 7.58, stdev= 5.84, samples=86 write: IOPS=8, BW=139KiB/s (142kB/s)(6256KiB/45027msec); 0 zone resets clat (msec): min=15, max=275, avg=65.74, stdev=44.54 lat (msec): min=15, max=275, avg=65.75, stdev=44.54 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 61], | 70.00th=[ 77], 80.00th=[ 97], 90.00th=[ 124], 95.00th=[ 159], | 99.00th=[ 218], 99.50th=[ 266], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 447, per=24.86%, avg=138.21, stdev=88.49, samples=87 iops : min= 1, max= 27, avg= 7.83, stdev= 5.58, samples=87 lat (msec) : 10=1.04%, 20=12.37%, 50=45.05%, 100=25.52%, 250=15.63% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=1.99%, ctx=1274, 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=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=529KiB/s (542kB/s), 127KiB/s-141KiB/s (130kB/s-145kB/s), io=23.4MiB (24.5MB), run=44263-45287msec WRITE: bw=556KiB/s (570kB/s), 136KiB/s-145KiB/s (140kB/s-148kB/s), io=24.6MiB (25.8MB), run=44263-45287msec 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=179069: Fri Aug 14 10:19:11 2026 read: IOPS=1, BW=1579KiB/s (1616kB/s)(7168KiB/4541msec) clat (msec): min=201, max=441, avg=311.63, stdev=81.58 lat (msec): min=201, max=441, avg=311.64, stdev=81.58 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 251], 50.00th=[ 338], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 355], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 1585, max= 3984, per=57.71%, avg=2310.20, stdev=954.08, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1128KiB/s (1155kB/s)(5120KiB/4541msec); 0 zone resets clat (msec): min=337, max=516, avg=421.33, stdev=67.80 lat (msec): min=337, max=516, avg=421.40, stdev=67.81 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 384], 40.00th=[ 384], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 1899, max= 2048, per=35.76%, avg=2004.25, stdev=70.74, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 250=8.33%, 500=83.33%, 750=8.33% cpu : usr=0.00%, sys=11.41%, ctx=297, 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=179070: Fri Aug 14 10:19:11 2026 read: IOPS=0, BW=406KiB/s (416kB/s)(2048KiB/5040msec) clat (msec): min=210, max=252, avg=231.18, stdev=29.44 lat (msec): min=210, max=252, avg=231.19, stdev=29.44 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 211], 60.00th=[ 253], | 70.00th=[ 253], 80.00th=[ 253], 90.00th=[ 253], 95.00th=[ 253], | 99.00th=[ 253], 99.50th=[ 253], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 1514, max= 2048, per=44.49%, avg=1781.00, stdev=377.60, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=2032KiB/s (2081kB/s)(10.0MiB/5040msec); 0 zone resets clat (msec): min=171, max=1092, avg=422.22, stdev=276.03 lat (msec): min=171, max=1092, avg=422.53, stdev=275.86 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 207], | 30.00th=[ 222], 40.00th=[ 288], 50.00th=[ 296], 60.00th=[ 368], | 70.00th=[ 426], 80.00th=[ 567], 90.00th=[ 592], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 2027, max= 4096, per=54.36%, avg=3046.17, stdev=1103.61, samples=6 iops : min= 1, max= 4, avg= 2.33, stdev= 1.21, samples=6 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=13.28%, ctx=245, 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=179071: Fri Aug 14 10:19:11 2026 read: IOPS=1, BW=1290KiB/s (1321kB/s)(6144KiB/4762msec) clat (usec): min=852, max=420144, avg=202827.40, stdev=178817.79 lat (usec): min=854, max=420145, avg=202828.75, stdev=178817.64 clat percentiles (usec): | 1.00th=[ 857], 5.00th=[ 857], 10.00th=[ 857], 20.00th=[ 2180], | 30.00th=[ 2180], 40.00th=[147850], 50.00th=[147850], 60.00th=[320865], | 70.00th=[320865], 80.00th=[320865], 90.00th=[421528], 95.00th=[421528], | 99.00th=[421528], 99.50th=[421528], 99.90th=[421528], 99.95th=[421528], | 99.99th=[421528] bw ( KiB/s): min= 2035, max= 3799, per=61.98%, avg=2481.25, stdev=878.52, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1290KiB/s (1321kB/s)(6144KiB/4762msec); 0 zone resets clat (msec): min=195, max=1409, avg=573.25, stdev=428.12 lat (msec): min=197, max=1410, avg=573.60, stdev=427.86 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 493], | 70.00th=[ 527], 80.00th=[ 527], 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= 2035, max= 2813, per=39.88%, avg=2234.75, stdev=385.54, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 250=16.67%, 500=50.00%, 750=8.33%, 2000=8.33% cpu : usr=0.06%, sys=11.26%, ctx=230, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179072: Fri Aug 14 10:19:11 2026 read: IOPS=0, BW=1001KiB/s (1025kB/s)(5120KiB/5116msec) clat (usec): min=501, max=268915, avg=85854.97, stdev=123022.13 lat (usec): min=502, max=268916, avg=85856.10, stdev=123022.33 clat percentiles (usec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 996], 60.00th=[ 996], | 70.00th=[158335], 80.00th=[158335], 90.00th=[270533], 95.00th=[270533], | 99.00th=[270533], 99.50th=[270533], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1401KiB/s (1435kB/s)(7168KiB/5116msec); 0 zone resets clat (msec): min=133, max=1477, avg=632.44, stdev=482.73 lat (msec): min=133, max=1477, avg=632.56, stdev=482.72 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 296], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 514], 60.00th=[ 592], | 70.00th=[ 592], 80.00th=[ 1099], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 1992, max= 3799, per=44.03%, avg=2467.25, stdev=888.12, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 750=16.67%, 1000=8.33% lat (msec) : 250=16.67%, 500=25.00%, 750=16.67%, 2000=16.67% cpu : usr=0.00%, sys=8.21%, ctx=148, 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=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=4003KiB/s (4099kB/s), 406KiB/s-1579KiB/s (416kB/s-1616kB/s), io=20.0MiB (20.0MB), run=4541-5116msec WRITE: bw=5604KiB/s (5739kB/s), 1128KiB/s-2032KiB/s (1155kB/s-2081kB/s), io=28.0MiB (29.4MB), run=4541-5116msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179065: Fri Aug 14 10:19:11 2026 read: IOPS=1, BW=1873KiB/s (1918kB/s)(7168KiB/3827msec) clat (msec): min=127, max=665, avg=253.05, stdev=209.85 lat (msec): min=127, max=665, avg=253.05, stdev=209.85 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 131], | 30.00th=[ 134], 40.00th=[ 134], 50.00th=[ 138], 60.00th=[ 161], | 70.00th=[ 161], 80.00th=[ 418], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 2035, max= 4471, per=74.84%, avg=2645.00, stdev=1217.33, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1338KiB/s (1370kB/s)(5120KiB/3827msec); 0 zone resets clat (msec): min=137, max=756, avg=404.92, stdev=298.44 lat (msec): min=138, max=756, avg=405.12, stdev=298.35 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 266], 60.00th=[ 266], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 2043, max= 4079, per=67.17%, avg=3323.67, stdev=1115.04, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 250=58.33%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=3.40%, ctx=66, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179066: Fri Aug 14 10:19:11 2026 read: IOPS=0, BW=353KiB/s (362kB/s)(2048KiB/5794msec) clat (msec): min=92, max=830, avg=461.51, stdev=521.25 lat (msec): min=92, max=830, avg=461.52, stdev=521.25 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 93], 40.00th=[ 93], 50.00th=[ 93], 60.00th=[ 827], | 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= 1503, max= 1976, per=49.22%, avg=1739.50, stdev=334.46, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1767KiB/s (1810kB/s)(10.0MiB/5794msec); 0 zone resets clat (msec): min=129, max=1396, avg=478.86, stdev=404.89 lat (msec): min=129, max=1397, avg=479.18, stdev=404.99 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 161], | 30.00th=[ 209], 40.00th=[ 218], 50.00th=[ 347], 60.00th=[ 388], | 70.00th=[ 393], 80.00th=[ 609], 90.00th=[ 944], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 2023, max= 4087, per=49.86%, avg=2467.00, stdev=800.97, samples=7 iops : min= 1, max= 3, avg= 1.43, stdev= 0.79, samples=7 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=8.33%, 1000=16.67% lat (msec) : 2000=8.33% cpu : usr=0.03%, sys=5.33%, ctx=126, 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=179067: Fri Aug 14 10:19:11 2026 read: IOPS=1, BW=1133KiB/s (1160kB/s)(6144KiB/5424msec) clat (msec): min=179, max=634, avg=402.25, stdev=190.05 lat (msec): min=179, max=634, avg=402.25, stdev=190.05 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 531], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1924, max= 2048, per=56.63%, avg=2001.20, stdev=51.00, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=1, BW=1133KiB/s (1160kB/s)(6144KiB/5424msec); 0 zone resets clat (msec): min=150, max=1173, avg=482.32, stdev=371.19 lat (msec): min=150, max=1173, avg=482.46, stdev=371.21 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 401], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 2035, max= 3084, per=45.44%, avg=2248.20, stdev=467.26, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 250=25.00%, 500=33.33%, 750=33.33%, 2000=8.33% cpu : usr=0.00%, sys=3.45%, ctx=131, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179068: Fri Aug 14 10:19:11 2026 read: IOPS=0, BW=1005KiB/s (1030kB/s)(5120KiB/5092msec) clat (msec): min=155, max=551, avg=272.17, stdev=160.80 lat (msec): min=155, max=551, avg=272.17, stdev=160.80 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 226], 60.00th=[ 226], | 70.00th=[ 253], 80.00th=[ 253], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 2035, max= 3849, per=74.73%, avg=2641.00, stdev=1046.16, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1408KiB/s (1441kB/s)(7168KiB/5092msec); 0 zone resets clat (msec): min=98, max=1243, avg=500.86, stdev=401.78 lat (msec): min=106, max=1243, avg=502.79, stdev=400.42 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 132], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 460], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 776], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 1549, max= 4071, per=48.70%, avg=2409.75, stdev=1128.91, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=3.26%, ctx=79, 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=3535KiB/s (3620kB/s), 353KiB/s-1873KiB/s (362kB/s-1918kB/s), io=20.0MiB (20.0MB), run=3827-5794msec WRITE: bw=4949KiB/s (5067kB/s), 1133KiB/s-1767KiB/s (1160kB/s-1810kB/s), io=28.0MiB (29.4MB), run=3827-5794msec 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=179079: Fri Aug 14 10:19:27 2026 read: IOPS=1, BW=4708KiB/s (4821kB/s)(12.0MiB/2610msec) clat (msec): min=705, max=1052, avg=851.88, stdev=179.85 lat (msec): min=705, max=1052, avg=851.88, stdev=179.85 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 1053], 80.00th=[ 1053], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 8078, max= 8143, per=100.00%, avg=8110.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=11.19%, ctx=329, 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=179080: Fri Aug 14 10:19:27 2026 read: IOPS=0, BW=1389KiB/s (1423kB/s)(4096KiB/2948msec) clat (nsec): min=800988k, max=800988k, avg=800987864.00, stdev= 0.00 lat (nsec): min=800991k, max=800991k, avg=800991374.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2779KiB/s (2846kB/s)(8192KiB/2948msec); 0 zone resets clat (msec): min=801, max=1335, avg=1068.39, stdev=378.06 lat (msec): min=801, max=1335, avg=1068.66, stdev=377.95 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 1334], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8078, max= 8078, per=76.03%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.10%, sys=3.56%, ctx=84, 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=179081: Fri Aug 14 10:19:27 2026 write: IOPS=0, BW=3984KiB/s (4080kB/s)(12.0MiB/3084msec); 0 zone resets clat (msec): min=743, max=1187, avg=995.84, stdev=228.14 lat (msec): min=743, max=1190, avg=997.35, stdev=229.66 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 1062], 50.00th=[ 1062], 60.00th=[ 1062], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8078, max= 8175, per=76.48%, avg=8126.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.16%, sys=4.38%, ctx=110, 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=179082: Fri Aug 14 10:19:27 2026 write: IOPS=1, BW=4886KiB/s (5003kB/s)(12.0MiB/2515msec); 0 zone resets clat (msec): min=612, max=930, avg=781.97, stdev=159.79 lat (msec): min=613, max=930, avg=782.70, stdev=159.90 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 927], 80.00th=[ 927], 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= 8078, max= 8175, per=76.48%, avg=8126.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=2.86%, ctx=50, 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=5558KiB/s (5691kB/s), 1389KiB/s-4708KiB/s (1423kB/s-4821kB/s), io=16.0MiB (16.8MB), run=2610-2948msec WRITE: bw=10.4MiB/s (10.9MB/s), 2779KiB/s-4886KiB/s (2846kB/s-5003kB/s), io=32.0MiB (33.6MB), run=2515-3084msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179084: Fri Aug 14 10:19:28 2026 read: IOPS=1, BW=4187KiB/s (4287kB/s)(12.0MiB/2935msec) clat (msec): min=677, max=1144, avg=977.15, stdev=260.09 lat (msec): min=677, max=1144, avg=977.15, stdev=260.09 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8094, max= 8143, per=100.00%, avg=8118.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.79%, ctx=34, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179085: Fri Aug 14 10:19:28 2026 read: IOPS=0, BW=1324KiB/s (1356kB/s)(4096KiB/3093msec) clat (nsec): min=1328.7M, max=1328.7M, avg=1328694185.00, stdev= 0.00 lat (nsec): min=1328.7M, max=1328.7M, avg=1328695332.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1334], 5.00th=[ 1334], 10.00th=[ 1334], 20.00th=[ 1334], | 30.00th=[ 1334], 40.00th=[ 1334], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] 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=2649KiB/s (2712kB/s)(8192KiB/3093msec); 0 zone resets clat (msec): min=841, max=920, avg=881.19, stdev=55.57 lat (msec): min=842, max=920, avg=881.50, stdev=55.65 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=[ 919], | 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=78.91%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.46%, ctx=61, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179086: Fri Aug 14 10:19:28 2026 write: IOPS=0, BW=3870KiB/s (3963kB/s)(12.0MiB/3175msec); 0 zone resets clat (msec): min=332, max=1506, avg=1037.93, stdev=621.56 lat (msec): min=333, max=1507, avg=1038.36, stdev=621.77 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8143, max= 8143, per=78.91%, avg=8143.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=1.83%, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=179087: Fri Aug 14 10:19:28 2026 write: IOPS=1, BW=4621KiB/s (4732kB/s)(12.0MiB/2659msec); 0 zone resets clat (msec): min=324, max=1994, avg=885.54, stdev=960.62 lat (msec): min=325, max=1995, avg=885.86, stdev=960.62 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 1989], 80.00th=[ 1989], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 6330, max= 6330, per=61.34%, avg=6330.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=3.31%, ctx=44, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5297KiB/s (5424kB/s), 1324KiB/s-4187KiB/s (1356kB/s-4287kB/s), io=16.0MiB (16.8MB), run=2935-3093msec WRITE: bw=10.1MiB/s (10.6MB/s), 2649KiB/s-4621KiB/s (2712kB/s-4732kB/s), io=32.0MiB (33.6MB), run=2659-3175msec