== sanity test 398b: DIO and buffer IO race ============== 17:22:47 (1786569767) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.83417 s, 10.4 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=180424: Wed Aug 12 17:24:39 2026 read: IOPS=15, BW=62.2KiB/s (63.6kB/s)(5992KiB/96409msec) clat (usec): min=42, max=195107, avg=34899.71, stdev=20416.14 lat (usec): min=43, max=195108, avg=34906.79, stdev=20413.43 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 11338], 10.00th=[ 15270], 20.00th=[ 19268], | 30.00th=[ 22938], 40.00th=[ 26870], 50.00th=[ 31065], 60.00th=[ 35914], | 70.00th=[ 42206], 80.00th=[ 48497], 90.00th=[ 58459], 95.00th=[ 70779], | 99.00th=[100140], 99.50th=[121111], 99.90th=[187696], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 23, max= 127, per=25.28%, avg=61.93, stdev=18.51, samples=190 iops : min= 5, max= 31, avg=14.87, stdev= 4.63, samples=190 write: IOPS=16, BW=65.3KiB/s (66.9kB/s)(6296KiB/96409msec); 0 zone resets clat (usec): min=1202, max=776231, avg=27776.80, stdev=32326.45 lat (usec): min=1204, max=776233, avg=27785.54, stdev=32324.65 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1745], 10.00th=[ 2507], 20.00th=[ 4686], | 30.00th=[ 8094], 40.00th=[ 15008], 50.00th=[ 20579], 60.00th=[ 26608], | 70.00th=[ 34866], 80.00th=[ 46400], 90.00th=[ 63177], 95.00th=[ 77071], | 99.00th=[110625], 99.50th=[124257], 99.90th=[283116], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 16, max= 151, per=25.41%, avg=65.05, stdev=25.33, samples=190 iops : min= 4, max= 37, avg=15.65, stdev= 6.34, samples=190 lat (usec) : 50=0.07%, 100=1.17%, 250=0.29%, 750=0.03% lat (msec) : 2=3.58%, 4=5.34%, 10=8.69%, 20=16.37%, 50=46.84% lat (msec) : 100=16.34%, 250=1.20%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=8.98%, ctx=7443, 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=180425: Wed Aug 12 17:24:39 2026 read: IOPS=15, BW=62.2KiB/s (63.7kB/s)(5940KiB/95464msec) clat (usec): min=46, max=820413, avg=35443.19, stdev=29036.64 lat (usec): min=47, max=820415, avg=35447.19, stdev=29035.75 clat percentiles (usec): | 1.00th=[ 68], 5.00th=[ 11994], 10.00th=[ 15139], 20.00th=[ 19268], | 30.00th=[ 22938], 40.00th=[ 26346], 50.00th=[ 30802], 60.00th=[ 35914], | 70.00th=[ 42206], 80.00th=[ 47973], 90.00th=[ 58459], 95.00th=[ 70779], | 99.00th=[108528], 99.50th=[124257], 99.90th=[173016], 99.95th=[817890], | 99.99th=[817890] bw ( KiB/s): min= 15, max= 126, per=25.31%, avg=62.00, stdev=20.65, samples=188 iops : min= 3, max= 31, avg=14.89, stdev= 5.17, samples=188 write: IOPS=16, BW=66.5KiB/s (68.1kB/s)(6348KiB/95464msec); 0 zone resets clat (usec): min=1118, max=151267, avg=26699.11, stdev=25556.32 lat (usec): min=1119, max=151269, avg=26704.54, stdev=25557.31 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1762], 10.00th=[ 2343], 20.00th=[ 4293], | 30.00th=[ 7177], 40.00th=[ 14222], 50.00th=[ 20055], 60.00th=[ 26346], | 70.00th=[ 34341], 80.00th=[ 44827], 90.00th=[ 61604], 95.00th=[ 77071], | 99.00th=[114820], 99.50th=[128451], 99.90th=[147850], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 7, max= 135, per=25.83%, avg=66.12, stdev=23.55, samples=188 iops : min= 1, max= 33, avg=15.93, stdev= 5.91, samples=188 lat (usec) : 50=0.07%, 100=1.11%, 250=0.29%, 500=0.13%, 750=0.03% lat (msec) : 2=3.68%, 4=5.76%, 10=8.95%, 20=16.08%, 50=46.61% lat (msec) : 100=15.66%, 250=1.60%, 1000=0.03% cpu : usr=0.10%, sys=8.83%, ctx=7476, 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=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=180426: Wed Aug 12 17:24:39 2026 read: IOPS=15, BW=61.6KiB/s (63.0kB/s)(6028KiB/97908msec) clat (usec): min=38, max=160789, avg=34601.22, stdev=20641.31 lat (usec): min=39, max=160789, avg=34603.31, stdev=20641.70 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 10552], 10.00th=[ 14615], 20.00th=[ 19268], | 30.00th=[ 22676], 40.00th=[ 26608], 50.00th=[ 31065], 60.00th=[ 35390], | 70.00th=[ 40633], 80.00th=[ 48497], 90.00th=[ 58459], 95.00th=[ 69731], | 99.00th=[112722], 99.50th=[128451], 99.90th=[145753], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 15, max= 112, per=25.06%, avg=61.39, stdev=19.15, samples=193 iops : min= 3, max= 28, avg=14.73, stdev= 4.80, samples=193 write: IOPS=15, BW=63.9KiB/s (65.5kB/s)(6260KiB/97908msec); 0 zone resets clat (usec): min=1187, max=807641, avg=28996.41, stdev=33769.86 lat (usec): min=1189, max=807643, avg=28999.25, stdev=33769.38 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1696], 10.00th=[ 2638], 20.00th=[ 4555], | 30.00th=[ 7963], 40.00th=[ 15926], 50.00th=[ 21890], 60.00th=[ 27919], | 70.00th=[ 36439], 80.00th=[ 47973], 90.00th=[ 65799], 95.00th=[ 80217], | 99.00th=[119014], 99.50th=[162530], 99.90th=[229639], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 8, max= 143, per=24.87%, avg=63.66, stdev=23.27, samples=193 iops : min= 2, max= 35, avg=15.31, stdev= 5.85, samples=193 lat (usec) : 50=0.20%, 100=1.20%, 250=0.29%, 500=0.13%, 1000=0.03% lat (msec) : 2=3.52%, 4=5.31%, 10=8.53%, 20=15.36%, 50=47.33% lat (msec) : 100=16.37%, 250=1.69%, 1000=0.03% cpu : usr=0.13%, sys=8.54%, ctx=7439, 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=180427: Wed Aug 12 17:24:39 2026 read: IOPS=15, BW=62.8KiB/s (64.3kB/s)(6052KiB/96426msec) clat (usec): min=39, max=854334, avg=35688.59, stdev=30103.70 lat (usec): min=39, max=854335, avg=35690.47, stdev=30103.73 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 10814], 10.00th=[ 14746], 20.00th=[ 19530], | 30.00th=[ 23462], 40.00th=[ 27132], 50.00th=[ 31327], 60.00th=[ 35914], | 70.00th=[ 42206], 80.00th=[ 48497], 90.00th=[ 58983], 95.00th=[ 71828], | 99.00th=[111674], 99.50th=[143655], 99.90th=[198181], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 15, max= 127, per=25.52%, avg=62.52, stdev=19.12, samples=190 iops : min= 3, max= 31, avg=15.02, stdev= 4.81, samples=190 write: IOPS=16, BW=64.7KiB/s (66.2kB/s)(6236KiB/96426msec); 0 zone resets clat (usec): min=973, max=183161, avg=26979.66, stdev=26033.36 lat (usec): min=974, max=183163, avg=26981.88, stdev=26033.42 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1811], 10.00th=[ 2409], 20.00th=[ 4293], | 30.00th=[ 7767], 40.00th=[ 14484], 50.00th=[ 20579], 60.00th=[ 26084], | 70.00th=[ 34341], 80.00th=[ 46924], 90.00th=[ 62653], 95.00th=[ 76022], | 99.00th=[114820], 99.50th=[139461], 99.90th=[179307], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 15, max= 167, per=25.10%, avg=64.25, stdev=22.71, samples=190 iops : min= 3, max= 41, avg=15.46, stdev= 5.70, samples=190 lat (usec) : 50=0.23%, 100=1.14%, 250=0.42%, 500=0.07%, 1000=0.13% lat (msec) : 2=3.65%, 4=5.63%, 10=8.82%, 20=15.23%, 50=47.20% lat (msec) : 100=15.79%, 250=1.66%, 1000=0.03% cpu : usr=0.09%, sys=8.62%, ctx=7425, 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=245KiB/s (251kB/s), 61.6KiB/s-62.8KiB/s (63.0kB/s-64.3kB/s), io=23.4MiB (24.6MB), run=95464-97908msec WRITE: bw=257KiB/s (263kB/s), 63.9KiB/s-66.5KiB/s (65.5kB/s-68.1kB/s), io=24.6MiB (25.7MB), run=95464-97908msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180429: Wed Aug 12 17:25:04 2026 read: IOPS=12, BW=49.0KiB/s (50.2kB/s)(5992KiB/122265msec) clat (msec): min=5, max=821, avg=32.82, stdev=35.78 lat (msec): min=5, max=821, avg=32.82, stdev=35.78 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 35], 80.00th=[ 48], 90.00th=[ 73], 95.00th=[ 96], | 99.00th=[ 150], 99.50th=[ 176], 99.90th=[ 224], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 159, per=25.07%, avg=48.89, stdev=33.87, samples=240 iops : min= 1, max= 39, avg=11.58, stdev= 8.53, samples=240 write: IOPS=12, BW=51.5KiB/s (52.7kB/s)(6296KiB/122265msec); 0 zone resets clat (msec): min=9, max=296, avg=46.34, stdev=32.71 lat (msec): min=9, max=296, avg=46.35, stdev=32.71 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 45], | 70.00th=[ 56], 80.00th=[ 70], 90.00th=[ 90], 95.00th=[ 107], | 99.00th=[ 157], 99.50th=[ 190], 99.90th=[ 268], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 143, per=25.09%, avg=51.17, stdev=32.18, samples=241 iops : min= 1, max= 35, avg=12.15, stdev= 8.13, samples=241 lat (msec) : 10=4.36%, 20=26.73%, 50=41.73%, 100=21.84%, 250=5.21% lat (msec) : 500=0.10%, 1000=0.03% cpu : usr=0.09%, sys=3.69%, ctx=5253, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180430: Wed Aug 12 17:25:04 2026 read: IOPS=12, BW=48.4KiB/s (49.5kB/s)(5940KiB/122798msec) clat (msec): min=5, max=826, avg=32.14, stdev=35.77 lat (msec): min=5, max=826, avg=32.14, stdev=35.77 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 44], 90.00th=[ 69], 95.00th=[ 95], | 99.00th=[ 148], 99.50th=[ 182], 99.90th=[ 218], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 160, per=24.87%, avg=48.49, stdev=33.72, samples=240 iops : min= 1, max= 40, avg=11.48, stdev= 8.49, samples=240 write: IOPS=12, BW=51.7KiB/s (52.9kB/s)(6348KiB/122798msec); 0 zone resets clat (msec): min=10, max=300, avg=47.22, stdev=32.27 lat (msec): min=10, max=300, avg=47.23, stdev=32.27 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 46], | 70.00th=[ 56], 80.00th=[ 72], 90.00th=[ 91], 95.00th=[ 111], | 99.00th=[ 150], 99.50th=[ 167], 99.90th=[ 251], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 7, max= 143, per=25.13%, avg=51.27, stdev=31.03, samples=242 iops : min= 1, max= 35, avg=12.17, stdev= 7.84, samples=242 lat (msec) : 10=4.04%, 20=26.50%, 50=43.29%, 100=20.64%, 250=5.44% lat (msec) : 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=3.73%, ctx=5245, 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=180431: Wed Aug 12 17:25:04 2026 read: IOPS=12, BW=49.0KiB/s (50.2kB/s)(6028KiB/122936msec) clat (msec): min=5, max=223, avg=32.70, stdev=29.00 lat (msec): min=5, max=223, avg=32.71, stdev=29.00 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 48], 90.00th=[ 73], 95.00th=[ 95], | 99.00th=[ 142], 99.50th=[ 161], 99.90th=[ 207], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 7, max= 176, per=24.96%, avg=48.67, stdev=32.06, samples=242 iops : min= 1, max= 44, avg=11.52, stdev= 8.10, samples=242 write: IOPS=12, BW=50.9KiB/s (52.1kB/s)(6260KiB/122936msec); 0 zone resets clat (msec): min=11, max=845, avg=46.97, stdev=38.83 lat (msec): min=11, max=845, avg=46.98, stdev=38.83 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 44], | 70.00th=[ 55], 80.00th=[ 69], 90.00th=[ 90], 95.00th=[ 110], | 99.00th=[ 169], 99.50th=[ 203], 99.90th=[ 268], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 143, per=24.73%, avg=50.45, stdev=32.08, samples=242 iops : min= 1, max= 35, avg=11.98, stdev= 8.08, samples=242 lat (msec) : 10=4.62%, 20=25.78%, 50=43.10%, 100=20.80%, 250=5.63% lat (msec) : 500=0.03%, 1000=0.03% cpu : usr=0.09%, sys=3.74%, ctx=5301, 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=180432: Wed Aug 12 17:25:04 2026 read: IOPS=12, BW=49.3KiB/s (50.5kB/s)(6052KiB/122735msec) clat (msec): min=5, max=191, avg=32.90, stdev=28.90 lat (msec): min=5, max=191, avg=32.90, stdev=28.90 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 52], 90.00th=[ 77], 95.00th=[ 94], | 99.00th=[ 136], 99.50th=[ 153], 99.90th=[ 186], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 7, max= 191, per=25.25%, avg=49.23, stdev=33.49, samples=241 iops : min= 1, max= 47, avg=11.66, stdev= 8.46, samples=241 write: IOPS=12, BW=50.8KiB/s (52.0kB/s)(6236KiB/122735msec); 0 zone resets clat (msec): min=9, max=845, avg=46.71, stdev=38.03 lat (msec): min=9, max=845, avg=46.71, stdev=38.03 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 44], | 70.00th=[ 55], 80.00th=[ 70], 90.00th=[ 90], 95.00th=[ 109], | 99.00th=[ 155], 99.50th=[ 192], 99.90th=[ 271], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 143, per=24.74%, avg=50.48, stdev=31.88, samples=242 iops : min= 1, max= 35, avg=11.98, stdev= 8.04, samples=242 lat (msec) : 10=5.14%, 20=26.01%, 50=41.47%, 100=21.94%, 250=5.34% lat (msec) : 500=0.07%, 1000=0.03% cpu : usr=0.09%, sys=3.74%, ctx=5319, 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=195KiB/s (200kB/s), 48.4KiB/s-49.3KiB/s (49.5kB/s-50.5kB/s), io=23.4MiB (24.6MB), run=122265-122936msec WRITE: bw=204KiB/s (209kB/s), 50.8KiB/s-51.7KiB/s (52.0kB/s-52.9kB/s), io=24.6MiB (25.7MB), run=122265-122936msec 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=180473: Wed Aug 12 17:25:38 2026 read: IOPS=14, BW=234KiB/s (240kB/s)(5920KiB/25262msec) clat (usec): min=52, max=141534, avg=34154.32, stdev=21254.98 lat (usec): min=52, max=141535, avg=34155.71, stdev=21255.06 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 81], 10.00th=[ 10421], 20.00th=[ 19006], | 30.00th=[ 22938], 40.00th=[ 26608], 50.00th=[ 31327], 60.00th=[ 35914], | 70.00th=[ 41681], 80.00th=[ 49546], 90.00th=[ 60556], 95.00th=[ 69731], | 99.00th=[ 93848], 99.50th=[128451], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 125, max= 446, per=25.11%, avg=234.26, stdev=71.62, samples=50 iops : min= 7, max= 27, avg=13.92, stdev= 4.48, samples=50 write: IOPS=15, BW=252KiB/s (258kB/s)(6368KiB/25262msec); 0 zone resets clat (usec): min=1888, max=202397, avg=31293.17, stdev=28540.25 lat (usec): min=1890, max=202400, avg=31300.26, stdev=28540.19 clat percentiles (usec): | 1.00th=[ 1958], 5.00th=[ 3359], 10.00th=[ 4228], 20.00th=[ 6783], | 30.00th=[ 12911], 40.00th=[ 18744], 50.00th=[ 23725], 60.00th=[ 29492], | 70.00th=[ 38536], 80.00th=[ 51643], 90.00th=[ 67634], 95.00th=[ 86508], | 99.00th=[141558], 99.50th=[160433], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 89, max= 448, per=25.67%, avg=252.06, stdev=90.99, samples=50 iops : min= 5, max= 28, avg=15.04, stdev= 5.69, samples=50 lat (usec) : 100=3.26%, 250=0.91%, 750=0.13% lat (msec) : 2=0.52%, 4=3.91%, 10=9.24%, 20=15.36%, 50=46.35% lat (msec) : 100=18.49%, 250=1.82% cpu : usr=0.06%, sys=9.71%, ctx=1989, 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=180474: Wed Aug 12 17:25:38 2026 read: IOPS=14, BW=226KiB/s (231kB/s)(5744KiB/25443msec) clat (usec): min=49, max=152509, avg=35732.00, stdev=21325.21 lat (usec): min=50, max=152511, avg=35734.04, stdev=21325.43 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 87], 10.00th=[ 14877], 20.00th=[ 20841], | 30.00th=[ 24773], 40.00th=[ 28181], 50.00th=[ 32375], 60.00th=[ 36439], | 70.00th=[ 42730], 80.00th=[ 49021], 90.00th=[ 64226], 95.00th=[ 76022], | 99.00th=[106431], 99.50th=[112722], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 59, max= 381, per=23.96%, avg=223.54, stdev=76.67, samples=50 iops : min= 3, max= 23, avg=13.24, stdev= 4.83, samples=50 write: IOPS=16, BW=257KiB/s (263kB/s)(6544KiB/25443msec); 0 zone resets clat (usec): min=1815, max=225139, avg=30366.96, stdev=27954.58 lat (usec): min=1816, max=225140, avg=30374.17, stdev=27961.34 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 10], 40.00th=[ 18], 50.00th=[ 23], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 51], 90.00th=[ 71], 95.00th=[ 83], | 99.00th=[ 116], 99.50th=[ 122], 99.90th=[ 226], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 32, max= 509, per=25.95%, avg=254.86, stdev=86.21, samples=50 iops : min= 2, max= 31, avg=15.22, stdev= 5.40, samples=50 lat (usec) : 50=0.13%, 100=2.21%, 250=0.65%, 500=0.26% lat (msec) : 2=0.13%, 4=5.08%, 10=10.94%, 20=13.28%, 50=48.05% lat (msec) : 100=17.58%, 250=1.69% cpu : usr=0.06%, sys=9.97%, ctx=1975, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180475: Wed Aug 12 17:25:38 2026 read: IOPS=15, BW=244KiB/s (250kB/s)(6256KiB/25650msec) clat (usec): min=53, max=130236, avg=37059.39, stdev=21600.90 lat (usec): min=54, max=130236, avg=37060.69, stdev=21601.00 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 88], 10.00th=[ 15139], 20.00th=[ 21365], | 30.00th=[ 25560], 40.00th=[ 30802], 50.00th=[ 34866], 60.00th=[ 39060], | 70.00th=[ 45351], 80.00th=[ 52691], 90.00th=[ 61604], 95.00th=[ 73925], | 99.00th=[107480], 99.50th=[116917], 99.90th=[130548], 99.95th=[130548], | 99.99th=[130548] bw ( KiB/s): min= 59, max= 448, per=26.19%, avg=244.38, stdev=75.12, samples=50 iops : min= 3, max= 28, avg=14.56, stdev= 4.73, samples=50 write: IOPS=14, BW=235KiB/s (241kB/s)(6032KiB/25650msec); 0 zone resets clat (usec): min=1588, max=186691, avg=28850.24, stdev=27827.56 lat (usec): min=1590, max=186694, avg=28854.64, stdev=27827.29 clat percentiles (usec): | 1.00th=[ 1958], 5.00th=[ 2966], 10.00th=[ 4080], 20.00th=[ 6259], | 30.00th=[ 9634], 40.00th=[ 15008], 50.00th=[ 19268], 60.00th=[ 28443], | 70.00th=[ 35914], 80.00th=[ 47449], 90.00th=[ 67634], 95.00th=[ 81265], | 99.00th=[135267], 99.50th=[168821], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 89, max= 479, per=23.60%, avg=231.74, stdev=98.77, samples=50 iops : min= 5, max= 29, avg=13.76, stdev= 6.17, samples=50 lat (usec) : 100=3.26%, 250=0.78% lat (msec) : 2=1.04%, 4=3.78%, 10=10.68%, 20=14.19%, 50=45.57% lat (msec) : 100=18.88%, 250=1.82% cpu : usr=0.11%, sys=9.66%, ctx=2004, 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=180476: Wed Aug 12 17:25:38 2026 read: IOPS=15, BW=249KiB/s (255kB/s)(6032KiB/24210msec) clat (usec): min=49, max=185624, avg=35801.46, stdev=23735.09 lat (usec): min=49, max=185625, avg=35804.64, stdev=23734.53 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 80], 10.00th=[ 147], 20.00th=[ 19530], | 30.00th=[ 23987], 40.00th=[ 29230], 50.00th=[ 33162], 60.00th=[ 38011], | 70.00th=[ 44303], 80.00th=[ 51643], 90.00th=[ 59507], 95.00th=[ 71828], | 99.00th=[126354], 99.50th=[139461], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 95, max= 411, per=26.62%, avg=248.40, stdev=73.34, samples=48 iops : min= 5, max= 25, avg=14.81, stdev= 4.69, samples=48 write: IOPS=16, BW=258KiB/s (265kB/s)(6256KiB/24210msec); 0 zone resets clat (usec): min=1735, max=123811, avg=27216.83, stdev=22989.24 lat (usec): min=1737, max=123814, avg=27218.92, stdev=22989.29 clat percentiles (usec): | 1.00th=[ 1975], 5.00th=[ 3097], 10.00th=[ 4359], 20.00th=[ 6390], | 30.00th=[ 9765], 40.00th=[ 15401], 50.00th=[ 20317], 60.00th=[ 27132], | 70.00th=[ 34866], 80.00th=[ 44827], 90.00th=[ 59507], 95.00th=[ 73925], | 99.00th=[ 94897], 99.50th=[114820], 99.90th=[124257], 99.95th=[124257], | 99.99th=[124257] bw ( KiB/s): min= 63, max= 509, per=26.30%, avg=258.25, stdev=86.17, samples=48 iops : min= 3, max= 31, avg=15.44, stdev= 5.47, samples=48 lat (usec) : 50=0.13%, 100=2.99%, 250=2.08% lat (msec) : 2=0.65%, 4=3.65%, 10=11.98%, 20=13.80%, 50=44.27% lat (msec) : 100=19.14%, 250=1.30% cpu : usr=0.08%, sys=9.90%, ctx=1943, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=934KiB/s (956kB/s), 226KiB/s-249KiB/s (231kB/s-255kB/s), io=23.4MiB (24.5MB), run=24210-25650msec WRITE: bw=982KiB/s (1006kB/s), 235KiB/s-258KiB/s (241kB/s-265kB/s), io=24.6MiB (25.8MB), run=24210-25650msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180469: Wed Aug 12 17:25:46 2026 read: IOPS=11, BW=178KiB/s (182kB/s)(5920KiB/33221msec) clat (msec): min=8, max=190, avg=35.49, stdev=29.65 lat (msec): min=8, max=190, avg=35.50, stdev=29.64 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 52], 90.00th=[ 82], 95.00th=[ 102], | 99.00th=[ 148], 99.50th=[ 157], 99.90th=[ 190], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 31, max= 478, per=24.45%, avg=174.82, stdev=105.05, samples=65 iops : min= 1, max= 29, avg=10.11, stdev= 6.67, samples=65 write: IOPS=11, BW=192KiB/s (196kB/s)(6368KiB/33221msec); 0 zone resets clat (msec): min=13, max=226, avg=50.20, stdev=32.33 lat (msec): min=13, max=226, avg=50.21, stdev=32.33 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 30], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 59], 80.00th=[ 75], 90.00th=[ 93], 95.00th=[ 108], | 99.00th=[ 192], 99.50th=[ 197], 99.90th=[ 226], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 31, max= 480, per=25.17%, avg=189.51, stdev=101.81, samples=65 iops : min= 1, max= 30, avg=11.03, stdev= 6.49, samples=65 lat (msec) : 10=2.08%, 20=19.92%, 50=48.96%, 100=22.92%, 250=6.12% cpu : usr=0.08%, sys=3.70%, ctx=1356, 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=180470: Wed Aug 12 17:25:46 2026 read: IOPS=10, BW=173KiB/s (177kB/s)(5744KiB/33226msec) clat (msec): min=7, max=161, avg=34.50, stdev=27.50 lat (msec): min=7, max=161, avg=34.50, stdev=27.50 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 51], 90.00th=[ 78], 95.00th=[ 102], | 99.00th=[ 126], 99.50th=[ 142], 99.90th=[ 163], 99.95th=[ 163], | 99.99th=[ 163] bw ( KiB/s): min= 31, max= 447, per=23.91%, avg=170.92, stdev=99.31, samples=65 iops : min= 1, max= 27, avg= 9.86, stdev= 6.28, samples=65 write: IOPS=12, BW=197KiB/s (202kB/s)(6544KiB/33226msec); 0 zone resets clat (msec): min=12, max=240, avg=50.82, stdev=31.21 lat (msec): min=12, max=240, avg=50.83, stdev=31.21 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 41], 60.00th=[ 49], | 70.00th=[ 61], 80.00th=[ 74], 90.00th=[ 92], 95.00th=[ 113], | 99.00th=[ 146], 99.50th=[ 163], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 31, max= 448, per=25.72%, avg=193.65, stdev=96.74, samples=65 iops : min= 1, max= 28, avg=11.29, stdev= 6.20, samples=65 lat (msec) : 10=1.43%, 20=18.88%, 50=49.61%, 100=24.09%, 250=5.99% cpu : usr=0.05%, sys=3.70%, ctx=1383, 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=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=180471: Wed Aug 12 17:25:46 2026 read: IOPS=11, BW=187KiB/s (191kB/s)(6256KiB/33462msec) clat (msec): min=8, max=180, avg=33.95, stdev=27.95 lat (msec): min=8, max=180, avg=33.95, stdev=27.95 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 47], 90.00th=[ 73], 95.00th=[ 93], | 99.00th=[ 150], 99.50th=[ 176], 99.90th=[ 182], 99.95th=[ 182], | 99.99th=[ 182] bw ( KiB/s): min= 63, max= 512, per=26.17%, avg=187.11, stdev=106.46, samples=66 iops : min= 3, max= 32, avg=10.89, stdev= 6.80, samples=66 write: IOPS=11, BW=180KiB/s (185kB/s)(6032KiB/33462msec); 0 zone resets clat (msec): min=13, max=240, avg=53.13, stdev=33.05 lat (msec): min=13, max=240, avg=53.13, stdev=33.05 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 37], 50.00th=[ 44], 60.00th=[ 52], | 70.00th=[ 61], 80.00th=[ 75], 90.00th=[ 94], 95.00th=[ 111], | 99.00th=[ 192], 99.50th=[ 232], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 63, max= 414, per=23.57%, avg=177.48, stdev=85.56, samples=66 iops : min= 3, max= 25, avg=10.29, stdev= 5.48, samples=66 lat (msec) : 10=1.95%, 20=18.88%, 50=49.87%, 100=23.70%, 250=5.60% cpu : usr=0.06%, sys=3.54%, ctx=1325, 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=180472: Wed Aug 12 17:25:46 2026 read: IOPS=11, BW=182KiB/s (187kB/s)(6032KiB/33110msec) clat (msec): min=6, max=176, avg=34.98, stdev=27.02 lat (msec): min=6, max=176, avg=34.99, stdev=27.01 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 50], 90.00th=[ 74], 95.00th=[ 96], | 99.00th=[ 133], 99.50th=[ 165], 99.90th=[ 178], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 29, max= 448, per=25.54%, avg=182.64, stdev=102.50, samples=64 iops : min= 1, max= 28, avg=10.59, stdev= 6.52, samples=64 write: IOPS=11, BW=189KiB/s (193kB/s)(6256KiB/33110msec); 0 zone resets clat (msec): min=13, max=194, avg=50.27, stdev=32.99 lat (msec): min=13, max=194, avg=50.28, stdev=32.98 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 58], 80.00th=[ 72], 90.00th=[ 95], 95.00th=[ 115], | 99.00th=[ 186], 99.50th=[ 188], 99.90th=[ 194], 99.95th=[ 194], | 99.99th=[ 194] bw ( KiB/s): min= 63, max= 476, per=24.77%, avg=186.52, stdev=98.98, samples=65 iops : min= 3, max= 29, avg=10.85, stdev= 6.29, samples=65 lat (msec) : 10=1.43%, 20=19.27%, 50=52.08%, 100=20.96%, 250=6.25% cpu : usr=0.06%, sys=3.73%, ctx=1366, 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=716KiB/s (733kB/s), 173KiB/s-187KiB/s (177kB/s-191kB/s), io=23.4MiB (24.5MB), run=33110-33462msec WRITE: bw=753KiB/s (771kB/s), 180KiB/s-197KiB/s (185kB/s-202kB/s), io=24.6MiB (25.8MB), run=33110-33462msec 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=180486: Wed Aug 12 17:25:57 2026 read: IOPS=1, BW=2045KiB/s (2094kB/s)(7168KiB/3505msec) clat (msec): min=119, max=827, avg=299.01, stdev=244.44 lat (msec): min=119, max=827, avg=299.02, stdev=244.44 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 134], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 205], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 326], 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= 1980, max= 4079, per=59.04%, avg=2982.25, stdev=1130.17, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1461KiB/s (1496kB/s)(5120KiB/3505msec); 0 zone resets clat (msec): min=141, max=470, avg=261.20, stdev=132.57 lat (msec): min=141, max=471, avg=261.50, stdev=132.99 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 245], 60.00th=[ 245], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 2007, max= 4063, per=38.22%, avg=2703.00, stdev=1177.90, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=58.33%, 500=33.33%, 1000=8.33% cpu : usr=0.00%, sys=24.63%, ctx=299, 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=180487: Wed Aug 12 17:25:57 2026 read: IOPS=0, BW=506KiB/s (519kB/s)(2048KiB/4044msec) clat (usec): min=982, max=156877, avg=78930.22, stdev=110234.15 lat (usec): min=984, max=156880, avg=78932.46, stdev=110234.86 clat percentiles (usec): | 1.00th=[ 979], 5.00th=[ 979], 10.00th=[ 979], 20.00th=[ 979], | 30.00th=[ 979], 40.00th=[ 979], 50.00th=[ 979], 60.00th=[156238], | 70.00th=[156238], 80.00th=[156238], 90.00th=[156238], 95.00th=[156238], | 99.00th=[156238], 99.50th=[156238], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 1957, max= 2007, per=39.24%, avg=1982.00, stdev=35.36, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2532KiB/s (2593kB/s)(10.0MiB/4044msec); 0 zone resets clat (msec): min=198, max=738, avg=386.76, stdev=182.82 lat (msec): min=198, max=738, avg=387.07, stdev=182.79 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 203], | 30.00th=[ 218], 40.00th=[ 264], 50.00th=[ 338], 60.00th=[ 372], | 70.00th=[ 443], 80.00th=[ 489], 90.00th=[ 609], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1980, max= 4079, per=38.09%, avg=2693.83, stdev=1054.65, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (usec) : 1000=8.33% lat (msec) : 250=33.33%, 500=41.67%, 750=16.67% cpu : usr=0.02%, sys=23.84%, ctx=257, 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=180488: Wed Aug 12 17:25:57 2026 read: IOPS=1, BW=1516KiB/s (1552kB/s)(6144KiB/4054msec) clat (usec): min=487, max=332584, avg=115891.19, stdev=137878.49 lat (usec): min=489, max=332585, avg=115892.43, stdev=137878.12 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 553], | 30.00th=[ 553], 40.00th=[ 2966], 50.00th=[ 2966], 60.00th=[160433], | 70.00th=[198181], 80.00th=[198181], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 2007, max= 6047, per=66.55%, avg=3361.67, stdev=2325.60, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1516KiB/s (1552kB/s)(6144KiB/4054msec); 0 zone resets clat (msec): min=217, max=970, avg=517.26, stdev=326.05 lat (msec): min=217, max=970, avg=517.33, stdev=326.08 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 368], | 70.00th=[ 894], 80.00th=[ 894], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 2031, max= 4079, per=47.80%, avg=3380.33, stdev=1168.80, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 4=8.33%, 250=25.00%, 500=33.33%, 1000=16.67% cpu : usr=0.02%, sys=18.31%, ctx=229, 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=180489: Wed Aug 12 17:25:57 2026 read: IOPS=1, BW=1705KiB/s (1746kB/s)(5120KiB/3003msec) clat (usec): min=544, max=365287, avg=175437.58, stdev=165634.27 lat (usec): min=546, max=365288, avg=175438.79, stdev=165634.28 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 545], | 30.00th=[ 1369], 40.00th=[ 1369], 50.00th=[246416], 60.00th=[246416], | 70.00th=[263193], 80.00th=[263193], 90.00th=[367002], 95.00th=[367002], | 99.00th=[367002], 99.50th=[367002], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 1980, max= 6095, per=79.93%, avg=4037.50, stdev=2909.74, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2387KiB/s (2444kB/s)(7168KiB/3003msec); 0 zone resets clat (msec): min=190, max=393, avg=287.65, stdev=72.44 lat (msec): min=190, max=393, avg=287.73, stdev=72.41 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 207], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 296], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 342], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 1980, max= 4079, per=42.64%, avg=3015.50, stdev=1191.36, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=58.33% cpu : usr=0.00%, sys=25.65%, ctx=199, 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=5052KiB/s (5173kB/s), 506KiB/s-2045KiB/s (519kB/s-2094kB/s), io=20.0MiB (20.0MB), run=3003-4054msec WRITE: bw=7073KiB/s (7242kB/s), 1461KiB/s-2532KiB/s (1496kB/s-2593kB/s), io=28.0MiB (29.4MB), run=3003-4054msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180491: Wed Aug 12 17:25:58 2026 read: IOPS=1, BW=1975KiB/s (2023kB/s)(7168KiB/3629msec) clat (msec): min=62, max=622, avg=209.46, stdev=190.15 lat (msec): min=62, max=622, avg=209.46, stdev=190.15 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 97], | 30.00th=[ 112], 40.00th=[ 112], 50.00th=[ 157], 60.00th=[ 207], | 70.00th=[ 207], 80.00th=[ 211], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 1393, max= 4087, per=63.59%, avg=2842.25, stdev=1402.24, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1411KiB/s (1445kB/s)(5120KiB/3629msec); 0 zone resets clat (msec): min=127, max=776, avg=400.83, stdev=253.74 lat (msec): min=127, max=776, avg=400.92, stdev=253.74 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 128], | 30.00th=[ 209], 40.00th=[ 209], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1889, max= 4063, per=42.59%, avg=2665.00, stdev=1213.15, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=50.00%, 500=16.67%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=11.38%, ctx=139, 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=180492: Wed Aug 12 17:25:58 2026 read: IOPS=0, BW=457KiB/s (467kB/s)(2048KiB/4486msec) clat (msec): min=85, max=531, avg=308.77, stdev=315.21 lat (msec): min=85, max=531, avg=308.77, stdev=315.21 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 86], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 86], 60.00th=[ 531], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 1396, max= 1992, per=37.90%, avg=1694.00, stdev=421.44, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2283KiB/s (2337kB/s)(10.0MiB/4486msec); 0 zone resets clat (msec): min=67, max=936, avg=365.71, stdev=296.57 lat (msec): min=67, max=936, avg=365.78, stdev=296.57 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 136], | 30.00th=[ 178], 40.00th=[ 259], 50.00th=[ 268], 60.00th=[ 288], | 70.00th=[ 321], 80.00th=[ 334], 90.00th=[ 877], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1889, max= 6144, per=51.55%, avg=3226.20, stdev=1863.61, samples=5 iops : min= 1, max= 6, avg= 2.40, stdev= 2.19, samples=5 lat (msec) : 100=16.67%, 250=16.67%, 500=41.67%, 750=8.33%, 1000=16.67% cpu : usr=0.02%, sys=9.32%, ctx=139, 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=180493: Wed Aug 12 17:25:58 2026 read: IOPS=1, BW=1605KiB/s (1644kB/s)(6144KiB/3827msec) clat (msec): min=98, max=333, avg=186.21, stdev=93.34 lat (msec): min=98, max=333, avg=186.21, stdev=93.34 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 100], 10.00th=[ 100], 20.00th=[ 106], | 30.00th=[ 106], 40.00th=[ 128], 50.00th=[ 128], 60.00th=[ 205], | 70.00th=[ 249], 80.00th=[ 249], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 1889, max= 4087, per=74.86%, avg=3346.33, stdev=1262.14, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1605KiB/s (1644kB/s)(6144KiB/3827msec); 0 zone resets clat (msec): min=188, max=682, avg=442.53, stdev=167.19 lat (msec): min=188, max=683, avg=442.61, stdev=167.20 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 477], | 70.00th=[ 523], 80.00th=[ 523], 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= 1889, max= 2782, per=34.18%, avg=2138.80, stdev=363.50, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=7.61%, ctx=140, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180494: Wed Aug 12 17:25:58 2026 read: IOPS=1, BW=1118KiB/s (1144kB/s)(5120KiB/4581msec) clat (msec): min=57, max=461, avg=255.99, stdev=143.87 lat (msec): min=57, max=461, avg=255.99, stdev=143.87 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 58], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 264], 60.00th=[ 264], | 70.00th=[ 268], 80.00th=[ 268], 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= 1889, max= 4096, per=59.49%, avg=2659.00, stdev=1245.54, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1565KiB/s (1602kB/s)(7168KiB/4581msec); 0 zone resets clat (msec): min=105, max=939, avg=444.48, stdev=362.33 lat (msec): min=105, max=939, avg=444.79, stdev=362.23 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 107], | 30.00th=[ 118], 40.00th=[ 118], 50.00th=[ 447], 60.00th=[ 502], | 70.00th=[ 502], 80.00th=[ 894], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1412, max= 2043, per=29.45%, avg=1842.75, stdev=295.37, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 1000=16.67% cpu : usr=0.09%, sys=6.75%, ctx=101, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=4471KiB/s (4578kB/s), 457KiB/s-1975KiB/s (467kB/s-2023kB/s), io=20.0MiB (20.0MB), run=3629-4581msec WRITE: bw=6259KiB/s (6409kB/s), 1411KiB/s-2283KiB/s (1445kB/s-2337kB/s), io=28.0MiB (29.4MB), run=3629-4581msec 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=180500: Wed Aug 12 17:26:10 2026 read: IOPS=0, BW=3044KiB/s (3117kB/s)(12.0MiB/4037msec) clat (msec): min=620, max=2668, avg=1304.99, stdev=1180.82 lat (msec): min=620, max=2668, avg=1304.99, stdev=1180.83 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 2668], 80.00th=[ 2668], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=15.19%, ctx=451, 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=180501: Wed Aug 12 17:26:10 2026 read: IOPS=0, BW=862KiB/s (883kB/s)(4096KiB/4752msec) clat (nsec): min=2724.2M, max=2724.2M, avg=2724199494.00, stdev= 0.00 lat (nsec): min=2724.2M, max=2724.2M, avg=2724201696.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2735], 5.00th=[ 2735], 10.00th=[ 2735], 20.00th=[ 2735], | 30.00th=[ 2735], 40.00th=[ 2735], 50.00th=[ 2735], 60.00th=[ 2735], | 70.00th=[ 2735], 80.00th=[ 2735], 90.00th=[ 2735], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1724KiB/s (1765kB/s)(8192KiB/4752msec); 0 zone resets clat (msec): min=813, max=1103, avg=958.31, stdev=204.77 lat (msec): min=813, max=1104, avg=959.39, stdev=205.62 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 1099], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] 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 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=7.49%, ctx=648, 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=180502: Wed Aug 12 17:26:10 2026 write: IOPS=0, BW=2734KiB/s (2800kB/s)(12.0MiB/4494msec); 0 zone resets clat (msec): min=540, max=2606, avg=1454.01, stdev=1053.63 lat (msec): min=543, max=2607, avg=1455.39, stdev=1052.39 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 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= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.04%, sys=4.74%, ctx=73, 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=180504: Wed Aug 12 17:26:10 2026 write: IOPS=0, BW=2915KiB/s (2985kB/s)(12.0MiB/4216msec); 0 zone resets clat (msec): min=614, max=2608, avg=1362.86, stdev=1085.90 lat (msec): min=615, max=2609, avg=1363.78, stdev=1085.90 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 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= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.53%, ctx=95, 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=3448KiB/s (3531kB/s), 862KiB/s-3044KiB/s (883kB/s-3117kB/s), io=16.0MiB (16.8MB), run=4037-4752msec WRITE: bw=6896KiB/s (7061kB/s), 1724KiB/s-2915KiB/s (1765kB/s-2985kB/s), io=32.0MiB (33.6MB), run=4216-4752msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180503: Wed Aug 12 17:26:11 2026 read: IOPS=0, BW=2617KiB/s (2679kB/s)(12.0MiB/4696msec) clat (msec): min=486, max=2868, avg=1542.40, stdev=1213.59 lat (msec): min=486, max=2868, avg=1542.40, stdev=1213.59 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 8110, max= 8192, per=100.00%, avg=8151.00, stdev=57.98, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.11%, ctx=62, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180505: Wed Aug 12 17:26:11 2026 read: IOPS=0, BW=868KiB/s (888kB/s)(4096KiB/4721msec) clat (nsec): min=3348.7M, max=3348.7M, avg=3348670291.00, stdev= 0.00 lat (nsec): min=3348.7M, max=3348.7M, avg=3348672442.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3339], 5.00th=[ 3339], 10.00th=[ 3339], 20.00th=[ 3339], | 30.00th=[ 3339], 40.00th=[ 3339], 50.00th=[ 3339], 60.00th=[ 3339], | 70.00th=[ 3339], 80.00th=[ 3339], 90.00th=[ 3339], 95.00th=[ 3339], | 99.00th=[ 3339], 99.50th=[ 3339], 99.90th=[ 3339], 99.95th=[ 3339], | 99.99th=[ 3339] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1735KiB/s (1777kB/s)(8192KiB/4721msec); 0 zone resets clat (msec): min=611, max=683, avg=647.32, stdev=50.49 lat (msec): min=612, max=683, avg=647.78, stdev=50.48 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 684], | 70.00th=[ 684], 80.00th=[ 684], 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= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=5.38%, ctx=73, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=180506: Wed Aug 12 17:26:11 2026 write: IOPS=0, BW=2408KiB/s (2466kB/s)(12.0MiB/5103msec); 0 zone resets clat (msec): min=163, max=4312, avg=1649.96, stdev=2311.27 lat (msec): min=163, max=4313, avg=1650.33, stdev=2311.27 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 4329], 80.00th=[ 4329], 90.00th=[ 4329], 95.00th=[ 4329], | 99.00th=[ 4329], 99.50th=[ 4329], 99.90th=[ 4329], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 7892, max= 8110, per=100.00%, avg=8001.00, stdev=154.15, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.04%, sys=3.12%, ctx=63, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180507: Wed Aug 12 17:26:11 2026 write: IOPS=0, BW=2659KiB/s (2723kB/s)(12.0MiB/4621msec); 0 zone resets clat (msec): min=291, max=3116, avg=1521.64, stdev=1447.39 lat (msec): min=291, max=3116, avg=1521.99, stdev=1447.36 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 3104], 80.00th=[ 3104], 90.00th=[ 3104], 95.00th=[ 3104], | 99.00th=[ 3104], 99.50th=[ 3104], 99.90th=[ 3104], 99.95th=[ 3104], | 99.99th=[ 3104] 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 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.98%, 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=3470KiB/s (3554kB/s), 868KiB/s-2617KiB/s (888kB/s-2679kB/s), io=16.0MiB (16.8MB), run=4696-4721msec WRITE: bw=6421KiB/s (6575kB/s), 1735KiB/s-2659KiB/s (1777kB/s-2723kB/s), io=32.0MiB (33.6MB), run=4621-5103msec