== sanity test 398b: DIO and buffer IO race ============== 13:01:27 (1779210087) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.9768 s, 8.4 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=179258: Tue May 19 13:03:50 2026 read: IOPS=12, BW=49.3KiB/s (50.5kB/s)(5992KiB/121616msec) clat (usec): min=33, max=745952, avg=45145.48, stdev=33766.79 lat (usec): min=33, max=745953, avg=45153.60, stdev=33767.66 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 10290], 10.00th=[ 17171], 20.00th=[ 22414], | 30.00th=[ 27395], 40.00th=[ 33162], 50.00th=[ 39584], 60.00th=[ 45876], | 70.00th=[ 53740], 80.00th=[ 63177], 90.00th=[ 79168], 95.00th=[ 98042], | 99.00th=[147850], 99.50th=[175113], 99.90th=[193987], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 15, max= 103, per=25.50%, avg=49.22, stdev=17.86, samples=238 iops : min= 3, max= 25, avg=11.67, stdev= 4.50, samples=238 write: IOPS=12, BW=51.8KiB/s (53.0kB/s)(6296KiB/121616msec); 0 zone resets clat (usec): min=1109, max=262574, avg=34062.24, stdev=35438.77 lat (usec): min=1110, max=262575, avg=34071.52, stdev=35436.32 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1352], 10.00th=[ 1860], 20.00th=[ 3949], | 30.00th=[ 7177], 40.00th=[ 14746], 50.00th=[ 23987], 60.00th=[ 32375], | 70.00th=[ 44827], 80.00th=[ 58983], 90.00th=[ 84411], 95.00th=[105382], | 99.00th=[147850], 99.50th=[168821], 99.90th=[246416], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 7, max= 133, per=25.48%, avg=51.48, stdev=20.47, samples=239 iops : min= 1, max= 33, avg=12.25, stdev= 5.14, samples=239 lat (usec) : 50=0.16%, 100=1.60%, 250=0.13%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.86%, 4=4.46%, 10=8.04%, 20=9.80%, 50=39.65% lat (msec) : 100=24.84%, 250=5.24%, 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=5.55%, ctx=6651, 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=179260: Tue May 19 13:03:50 2026 read: IOPS=12, BW=48.0KiB/s (50.2kB/s)(5940KiB/121255msec) clat (usec): min=48, max=245458, avg=45036.02, stdev=27133.15 lat (usec): min=48, max=245459, avg=45039.51, stdev=27131.46 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 12780], 10.00th=[ 18220], 20.00th=[ 23725], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 46400], | 70.00th=[ 53740], 80.00th=[ 64750], 90.00th=[ 78119], 95.00th=[ 91751], | 99.00th=[139461], 99.50th=[158335], 99.90th=[229639], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 5, max= 103, per=25.37%, avg=48.97, stdev=17.91, samples=237 iops : min= 1, max= 25, avg=11.62, stdev= 4.51, samples=237 write: IOPS=13, BW=52.4KiB/s (53.6kB/s)(6348KiB/121255msec); 0 zone resets clat (usec): min=1034, max=901967, avg=34072.10, stdev=41786.04 lat (usec): min=1036, max=901969, avg=34073.82, stdev=41786.01 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1336], 10.00th=[ 1909], 20.00th=[ 3949], | 30.00th=[ 6980], 40.00th=[ 12911], 50.00th=[ 22414], 60.00th=[ 31851], | 70.00th=[ 42206], 80.00th=[ 59507], 90.00th=[ 83362], 95.00th=[106431], | 99.00th=[149947], 99.50th=[177210], 99.90th=[295699], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 5, max= 167, per=25.63%, avg=51.78, stdev=23.48, samples=239 iops : min= 1, max= 41, avg=12.33, stdev= 5.88, samples=239 lat (usec) : 50=0.13%, 100=1.40%, 250=0.23%, 1000=0.03% lat (msec) : 2=5.60%, 4=4.92%, 10=8.66%, 20=9.67%, 50=39.91% lat (msec) : 100=24.67%, 250=4.72%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.80%, ctx=6654, 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=179261: Tue May 19 13:03:50 2026 read: IOPS=12, BW=48.6KiB/s (49.7kB/s)(6028KiB/124148msec) clat (usec): min=38, max=311701, avg=44965.74, stdev=29685.34 lat (usec): min=38, max=311702, avg=44969.24, stdev=29683.87 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 9634], 10.00th=[ 16909], 20.00th=[ 23200], | 30.00th=[ 28181], 40.00th=[ 33162], 50.00th=[ 39060], 60.00th=[ 46400], | 70.00th=[ 54264], 80.00th=[ 63177], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[149947], 99.50th=[173016], 99.90th=[283116], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 118, per=25.25%, avg=48.74, stdev=18.64, samples=242 iops : min= 1, max= 29, avg=11.55, stdev= 4.69, samples=242 write: IOPS=12, BW=50.4KiB/s (51.6kB/s)(6260KiB/124148msec); 0 zone resets clat (usec): min=1129, max=918351, avg=35791.06, stdev=41749.06 lat (usec): min=1131, max=918355, avg=35796.22, stdev=41750.62 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1385], 10.00th=[ 1942], 20.00th=[ 4752], | 30.00th=[ 8160], 40.00th=[ 17957], 50.00th=[ 26084], 60.00th=[ 34341], | 70.00th=[ 45351], 80.00th=[ 60556], 90.00th=[ 84411], 95.00th=[105382], | 99.00th=[156238], 99.50th=[187696], 99.90th=[214959], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 7, max= 134, per=24.85%, avg=50.20, stdev=22.18, samples=244 iops : min= 1, max= 33, avg=11.93, stdev= 5.59, samples=244 lat (usec) : 50=0.29%, 100=1.50%, 250=0.20%, 500=0.07%, 1000=0.13% lat (msec) : 2=5.31%, 4=3.78%, 10=8.01%, 20=9.31%, 50=41.37% lat (msec) : 100=24.93%, 250=4.98%, 500=0.10%, 1000=0.03% cpu : usr=0.08%, sys=5.62%, ctx=6752, 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=179262: Tue May 19 13:03:50 2026 read: IOPS=12, BW=49.0KiB/s (50.2kB/s)(6052KiB/123426msec) clat (usec): min=34, max=215205, avg=45532.47, stdev=29346.04 lat (usec): min=34, max=215207, avg=45541.57, stdev=29343.59 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 12649], 10.00th=[ 17695], 20.00th=[ 23462], | 30.00th=[ 28443], 40.00th=[ 33162], 50.00th=[ 39060], 60.00th=[ 46400], | 70.00th=[ 53740], 80.00th=[ 64750], 90.00th=[ 82314], 95.00th=[ 99091], | 99.00th=[152044], 99.50th=[175113], 99.90th=[212861], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 7, max= 103, per=25.31%, avg=48.85, stdev=18.45, samples=242 iops : min= 1, max= 25, avg=11.59, stdev= 4.67, samples=242 write: IOPS=12, BW=50.5KiB/s (51.7kB/s)(6236KiB/123426msec); 0 zone resets clat (usec): min=1071, max=924109, avg=34781.47, stdev=41229.46 lat (usec): min=1072, max=924110, avg=34785.11, stdev=41229.15 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1401], 10.00th=[ 1991], 20.00th=[ 4228], | 30.00th=[ 7570], 40.00th=[ 16450], 50.00th=[ 25560], 60.00th=[ 33424], | 70.00th=[ 43779], 80.00th=[ 58459], 90.00th=[ 83362], 95.00th=[106431], | 99.00th=[156238], 99.50th=[179307], 99.90th=[206570], 99.95th=[926942], | 99.99th=[926942] bw ( KiB/s): min= 7, max= 110, per=24.72%, avg=49.93, stdev=21.00, samples=243 iops : min= 1, max= 27, avg=11.86, stdev= 5.28, samples=243 lat (usec) : 50=0.23%, 100=1.56%, 250=0.16%, 500=0.07%, 1000=0.03% lat (msec) : 2=5.08%, 4=4.52%, 10=7.75%, 20=9.51%, 50=41.24% lat (msec) : 100=24.48%, 250=5.34%, 1000=0.03% cpu : usr=0.08%, sys=5.60%, ctx=6817, 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=193KiB/s (198kB/s), 48.6KiB/s-49.3KiB/s (49.7kB/s-50.5kB/s), io=23.4MiB (24.6MB), run=121255-124148msec WRITE: bw=203KiB/s (207kB/s), 50.4KiB/s-52.4KiB/s (51.6kB/s-53.6kB/s), io=24.6MiB (25.7MB), run=121255-124148msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179263: Tue May 19 13:04:38 2026 read: IOPS=8, BW=34.7KiB/s (35.6kB/s)(5992KiB/172464msec) clat (msec): min=6, max=775, avg=44.78, stdev=41.88 lat (msec): min=6, max=775, avg=44.78, stdev=41.88 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 63], 90.00th=[ 97], 95.00th=[ 124], | 99.00th=[ 180], 99.50th=[ 218], 99.90th=[ 284], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 160, per=25.16%, avg=34.97, stdev=23.74, samples=333 iops : min= 1, max= 40, avg= 8.06, stdev= 5.97, samples=333 write: IOPS=9, BW=36.5KiB/s (37.4kB/s)(6296KiB/172464msec); 0 zone resets clat (msec): min=9, max=321, avg=66.77, stdev=43.08 lat (msec): min=9, max=321, avg=66.78, stdev=43.08 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 65], | 70.00th=[ 80], 80.00th=[ 97], 90.00th=[ 126], 95.00th=[ 150], | 99.00th=[ 218], 99.50th=[ 245], 99.90th=[ 305], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 7, max= 119, per=24.94%, avg=36.16, stdev=21.11, samples=338 iops : min= 1, max= 29, avg= 8.36, stdev= 5.29, samples=338 lat (msec) : 10=1.43%, 20=12.53%, 50=45.35%, 100=26.56%, 250=13.87% lat (msec) : 500=0.23%, 1000=0.03% cpu : usr=0.06%, sys=2.14%, ctx=5136, 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=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=179264: Tue May 19 13:04:38 2026 read: IOPS=8, BW=34.5KiB/s (35.4kB/s)(5940KiB/171960msec) clat (msec): min=5, max=930, avg=44.32, stdev=43.81 lat (msec): min=5, max=930, avg=44.32, stdev=43.81 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 63], 90.00th=[ 92], 95.00th=[ 122], | 99.00th=[ 182], 99.50th=[ 245], 99.90th=[ 300], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7, max= 152, per=25.13%, avg=34.93, stdev=22.95, samples=330 iops : min= 1, max= 38, avg= 8.05, stdev= 5.78, samples=330 write: IOPS=9, BW=36.9KiB/s (37.8kB/s)(6348KiB/171960msec); 0 zone resets clat (msec): min=10, max=341, avg=66.72, stdev=43.89 lat (msec): min=10, max=341, avg=66.72, stdev=43.89 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 63], | 70.00th=[ 77], 80.00th=[ 97], 90.00th=[ 125], 95.00th=[ 148], | 99.00th=[ 232], 99.50th=[ 284], 99.90th=[ 330], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 103, per=25.25%, avg=36.61, stdev=21.54, samples=337 iops : min= 1, max= 25, avg= 8.47, stdev= 5.39, samples=337 lat (msec) : 10=1.60%, 20=12.04%, 50=44.34%, 100=28.48%, 250=12.99% lat (msec) : 500=0.52%, 1000=0.03% cpu : usr=0.07%, sys=2.20%, ctx=5171, 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=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=179265: Tue May 19 13:04:38 2026 read: IOPS=8, BW=35.1KiB/s (35.0kB/s)(6028KiB/171558msec) clat (msec): min=6, max=343, avg=43.14, stdev=37.01 lat (msec): min=6, max=343, avg=43.15, stdev=37.01 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 47], 80.00th=[ 63], 90.00th=[ 90], 95.00th=[ 120], | 99.00th=[ 180], 99.50th=[ 222], 99.90th=[ 284], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 127, per=25.40%, avg=35.31, stdev=22.59, samples=331 iops : min= 1, max= 31, avg= 8.14, stdev= 5.68, samples=331 write: IOPS=9, BW=36.5KiB/s (37.4kB/s)(6260KiB/171558msec); 0 zone resets clat (msec): min=11, max=946, avg=67.96, stdev=50.23 lat (msec): min=11, max=946, avg=67.97, stdev=50.24 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 55], 60.00th=[ 65], | 70.00th=[ 80], 80.00th=[ 96], 90.00th=[ 126], 95.00th=[ 155], | 99.00th=[ 228], 99.50th=[ 288], 99.90th=[ 363], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 7, max= 119, per=24.85%, avg=36.04, stdev=21.55, samples=337 iops : min= 1, max= 29, avg= 8.33, stdev= 5.41, samples=337 lat (msec) : 10=1.56%, 20=12.57%, 50=44.92%, 100=28.19%, 250=12.34% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.04%, sys=2.17%, ctx=5064, 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=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=179266: Tue May 19 13:04:38 2026 read: IOPS=8, BW=35.1KiB/s (35.9kB/s)(6052KiB/172619msec) clat (msec): min=5, max=349, avg=43.88, stdev=38.68 lat (msec): min=5, max=349, avg=43.88, stdev=38.68 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 64], 90.00th=[ 94], 95.00th=[ 124], | 99.00th=[ 194], 99.50th=[ 213], 99.90th=[ 309], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 7, max= 135, per=25.50%, avg=35.44, stdev=23.08, samples=331 iops : min= 1, max= 33, avg= 8.18, stdev= 5.79, samples=331 write: IOPS=9, BW=36.1KiB/s (36.0kB/s)(6236KiB/172619msec); 0 zone resets clat (msec): min=11, max=939, avg=67.99, stdev=48.32 lat (msec): min=11, max=939, avg=67.99, stdev=48.32 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 66], | 70.00th=[ 79], 80.00th=[ 97], 90.00th=[ 127], 95.00th=[ 153], | 99.00th=[ 220], 99.50th=[ 243], 99.90th=[ 330], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 7, max= 112, per=24.54%, avg=35.58, stdev=21.20, samples=339 iops : min= 1, max= 28, avg= 8.22, stdev= 5.33, samples=339 lat (msec) : 10=1.46%, 20=13.35%, 50=43.39%, 100=27.83%, 250=13.64% lat (msec) : 500=0.29%, 1000=0.03% cpu : usr=0.05%, sys=2.13%, ctx=5097, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=139KiB/s (142kB/s), 34.5KiB/s-35.1KiB/s (35.4kB/s-35.0kB/s), io=23.4MiB (24.6MB), run=171558-172619msec WRITE: bw=146KiB/s (149kB/s), 36.1KiB/s-36.9KiB/s (36.0kB/s-37.8kB/s), io=24.6MiB (25.7MB), run=171558-172619msec 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=179312: Tue May 19 13:05:21 2026 read: IOPS=11, BW=177KiB/s (181kB/s)(5920KiB/33426msec) clat (usec): min=44, max=258318, avg=45561.25, stdev=34226.19 lat (usec): min=44, max=258320, avg=45562.49, stdev=34226.22 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 61], 10.00th=[ 75], 20.00th=[ 21890], | 30.00th=[ 28705], 40.00th=[ 34866], 50.00th=[ 39584], 60.00th=[ 47449], | 70.00th=[ 55313], 80.00th=[ 66323], 90.00th=[ 86508], 95.00th=[101188], | 99.00th=[162530], 99.50th=[223347], 99.90th=[258999], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 31, max= 384, per=25.00%, avg=176.47, stdev=80.90, samples=66 iops : min= 1, max= 24, avg=10.27, stdev= 5.09, samples=66 write: IOPS=11, BW=191KiB/s (195kB/s)(6368KiB/33426msec); 0 zone resets clat (usec): min=1602, max=260021, avg=40653.49, stdev=38714.27 lat (usec): min=1604, max=260024, avg=40658.02, stdev=38713.98 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2638], 10.00th=[ 3949], 20.00th=[ 7504], | 30.00th=[ 12256], 40.00th=[ 20841], 50.00th=[ 28967], 60.00th=[ 40633], | 70.00th=[ 52167], 80.00th=[ 68682], 90.00th=[ 93848], 95.00th=[113771], | 99.00th=[164627], 99.50th=[196084], 99.90th=[258999], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 31, max= 409, per=26.05%, avg=193.52, stdev=74.35, samples=65 iops : min= 1, max= 25, avg=11.34, stdev= 4.74, samples=65 lat (usec) : 50=0.26%, 100=5.21%, 250=0.39%, 750=0.26% lat (msec) : 2=1.95%, 4=3.39%, 10=8.33%, 20=9.24%, 50=36.46% lat (msec) : 100=27.73%, 250=6.51%, 500=0.26% cpu : usr=0.08%, sys=5.98%, ctx=1701, 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=179313: Tue May 19 13:05:21 2026 read: IOPS=10, BW=169KiB/s (174kB/s)(5744KiB/33899msec) clat (usec): min=48, max=203771, avg=50832.36, stdev=31699.08 lat (usec): min=48, max=203772, avg=50840.12, stdev=31705.14 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 69], 10.00th=[ 15664], 20.00th=[ 27132], | 30.00th=[ 33424], 40.00th=[ 40633], 50.00th=[ 47449], 60.00th=[ 53740], | 70.00th=[ 61604], 80.00th=[ 73925], 90.00th=[ 87557], 95.00th=[105382], | 99.00th=[149947], 99.50th=[196084], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 30, max= 318, per=23.97%, avg=169.22, stdev=67.12, samples=67 iops : min= 1, max= 19, avg= 9.81, stdev= 4.29, samples=67 write: IOPS=12, BW=193KiB/s (198kB/s)(6544KiB/33899msec); 0 zone resets clat (usec): min=1477, max=192155, avg=38043.54, stdev=34783.93 lat (usec): min=1479, max=192157, avg=38054.26, stdev=34778.15 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2245], 10.00th=[ 4490], 20.00th=[ 7308], | 30.00th=[ 12518], 40.00th=[ 21103], 50.00th=[ 27919], 60.00th=[ 36963], | 70.00th=[ 48497], 80.00th=[ 65274], 90.00th=[ 89654], 95.00th=[105382], | 99.00th=[145753], 99.50th=[173016], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 62, max= 350, per=25.87%, avg=192.19, stdev=71.19, samples=67 iops : min= 3, max= 21, avg=11.27, stdev= 4.46, samples=67 lat (usec) : 50=0.13%, 100=3.12%, 250=0.65%, 500=0.13% lat (msec) : 2=1.95%, 4=2.99%, 10=8.85%, 20=8.46%, 50=37.11% lat (msec) : 100=30.08%, 250=6.51% cpu : usr=0.09%, sys=6.05%, ctx=1786, 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=179314: Tue May 19 13:05:21 2026 read: IOPS=11, BW=188KiB/s (192kB/s)(6256KiB/33294msec) clat (usec): min=50, max=183678, avg=45352.58, stdev=29829.15 lat (usec): min=51, max=183679, avg=45354.99, stdev=29829.68 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 66], 10.00th=[ 1221], 20.00th=[ 24249], | 30.00th=[ 29492], 40.00th=[ 33817], 50.00th=[ 41157], 60.00th=[ 46400], | 70.00th=[ 54789], 80.00th=[ 66323], 90.00th=[ 82314], 95.00th=[101188], | 99.00th=[147850], 99.50th=[164627], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 61, max= 479, per=26.81%, avg=189.26, stdev=77.84, samples=65 iops : min= 3, max= 29, avg=11.06, stdev= 4.90, samples=65 write: IOPS=11, BW=181KiB/s (186kB/s)(6032KiB/33294msec); 0 zone resets clat (usec): min=1599, max=199426, avg=40603.84, stdev=37997.35 lat (usec): min=1602, max=199429, avg=40612.91, stdev=37994.40 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2442], 10.00th=[ 3982], 20.00th=[ 7308], | 30.00th=[ 13042], 40.00th=[ 20317], 50.00th=[ 28967], 60.00th=[ 39060], | 70.00th=[ 52167], 80.00th=[ 72877], 90.00th=[ 98042], 95.00th=[115868], | 99.00th=[158335], 99.50th=[173016], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 63, max= 379, per=24.06%, avg=178.74, stdev=75.58, samples=65 iops : min= 3, max= 23, avg=10.42, stdev= 4.81, samples=65 lat (usec) : 100=4.30%, 250=0.26%, 500=0.39%, 750=0.13% lat (msec) : 2=1.43%, 4=3.65%, 10=7.55%, 20=8.59%, 50=40.62% lat (msec) : 100=26.17%, 250=6.90% cpu : usr=0.04%, sys=6.17%, ctx=1776, 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=179315: Tue May 19 13:05:21 2026 read: IOPS=11, BW=186KiB/s (191kB/s)(6032KiB/32407msec) clat (usec): min=42, max=194769, avg=45486.13, stdev=33056.94 lat (usec): min=42, max=194770, avg=45502.10, stdev=33058.34 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 64], 10.00th=[ 72], 20.00th=[ 18744], | 30.00th=[ 29754], 40.00th=[ 36963], 50.00th=[ 42206], 60.00th=[ 48497], | 70.00th=[ 58983], 80.00th=[ 67634], 90.00th=[ 88605], 95.00th=[106431], | 99.00th=[145753], 99.50th=[173016], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 30, max= 478, per=26.16%, avg=184.72, stdev=82.20, samples=64 iops : min= 1, max= 29, avg=10.78, stdev= 5.13, samples=64 write: IOPS=12, BW=193KiB/s (198kB/s)(6256KiB/32407msec); 0 zone resets clat (usec): min=1817, max=208242, avg=38221.94, stdev=36501.64 lat (usec): min=1819, max=208244, avg=38224.59, stdev=36501.90 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2376], 10.00th=[ 3720], 20.00th=[ 6849], | 30.00th=[ 10814], 40.00th=[ 18744], 50.00th=[ 29754], 60.00th=[ 39060], | 70.00th=[ 47449], 80.00th=[ 62129], 90.00th=[ 88605], 95.00th=[107480], | 99.00th=[168821], 99.50th=[204473], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 475, per=25.98%, avg=193.00, stdev=85.58, samples=64 iops : min= 1, max= 29, avg=11.31, stdev= 5.44, samples=64 lat (usec) : 50=0.26%, 100=6.64%, 250=0.91%, 500=0.13%, 750=0.13% lat (msec) : 2=1.69%, 4=4.56%, 10=8.46%, 20=7.94%, 50=35.94% lat (msec) : 100=26.82%, 250=6.51% cpu : usr=0.06%, sys=6.24%, ctx=1672, 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=707KiB/s (724kB/s), 169KiB/s-188KiB/s (174kB/s-192kB/s), io=23.4MiB (24.5MB), run=32407-33899msec WRITE: bw=743KiB/s (761kB/s), 181KiB/s-193KiB/s (186kB/s-198kB/s), io=24.6MiB (25.8MB), run=32407-33899msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179307: Tue May 19 13:05:33 2026 read: IOPS=8, BW=129KiB/s (132kB/s)(5920KiB/45897msec) clat (msec): min=7, max=278, avg=46.50, stdev=42.02 lat (msec): min=7, max=278, avg=46.51, stdev=42.02 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 64], 90.00th=[ 103], 95.00th=[ 138], | 99.00th=[ 224], 99.50th=[ 245], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 475, per=24.73%, avg=127.83, stdev=83.40, samples=89 iops : min= 1, max= 29, avg= 7.10, stdev= 5.25, samples=89 write: IOPS=8, BW=139KiB/s (142kB/s)(6368KiB/45897msec); 0 zone resets clat (msec): min=12, max=366, avg=71.69, stdev=46.16 lat (msec): min=12, max=366, avg=71.70, stdev=46.17 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 38], | 30.00th=[ 43], 40.00th=[ 48], 50.00th=[ 54], 60.00th=[ 69], | 70.00th=[ 84], 80.00th=[ 104], 90.00th=[ 136], 95.00th=[ 161], | 99.00th=[ 249], 99.50th=[ 321], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 28, max= 317, per=25.28%, avg=137.50, stdev=79.00, samples=90 iops : min= 1, max= 19, avg= 7.71, stdev= 4.97, samples=90 lat (msec) : 10=0.65%, 20=11.20%, 50=45.96%, 100=26.17%, 250=15.49% lat (msec) : 500=0.52% cpu : usr=0.04%, sys=2.17%, ctx=1270, 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=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=179308: Tue May 19 13:05:33 2026 read: IOPS=7, BW=124KiB/s (127kB/s)(5744KiB/46311msec) clat (msec): min=7, max=389, avg=46.28, stdev=42.78 lat (msec): min=7, max=389, avg=46.28, stdev=42.78 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 49], 80.00th=[ 64], 90.00th=[ 104], 95.00th=[ 131], | 99.00th=[ 201], 99.50th=[ 275], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 28, max= 349, per=25.50%, avg=131.81, stdev=75.70, samples=85 iops : min= 1, max= 21, avg= 7.35, stdev= 4.76, samples=85 write: IOPS=8, BW=141KiB/s (145kB/s)(6544KiB/46311msec); 0 zone resets clat (msec): min=17, max=359, avg=72.06, stdev=47.03 lat (msec): min=17, max=359, avg=72.07, stdev=47.03 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 37], | 30.00th=[ 43], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 69], | 70.00th=[ 83], 80.00th=[ 107], 90.00th=[ 140], 95.00th=[ 159], | 99.00th=[ 213], 99.50th=[ 266], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 381, per=25.75%, avg=140.08, stdev=82.06, samples=91 iops : min= 1, max= 23, avg= 7.88, stdev= 5.16, samples=91 lat (msec) : 10=0.65%, 20=9.64%, 50=46.48%, 100=26.17%, 250=16.41% lat (msec) : 500=0.65% cpu : usr=0.07%, sys=2.09%, ctx=1217, 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=179309: Tue May 19 13:05:33 2026 read: IOPS=8, BW=135KiB/s (138kB/s)(6256KiB/46319msec) clat (msec): min=7, max=302, avg=48.73, stdev=44.41 lat (msec): min=7, max=302, avg=48.73, stdev=44.41 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 52], 80.00th=[ 67], 90.00th=[ 110], 95.00th=[ 157], | 99.00th=[ 207], 99.50th=[ 275], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 476, per=26.74%, avg=138.25, stdev=95.83, samples=89 iops : min= 1, max= 29, avg= 7.76, stdev= 6.03, samples=89 write: IOPS=8, BW=130KiB/s (133kB/s)(6032KiB/46319msec); 0 zone resets clat (msec): min=17, max=269, avg=72.01, stdev=45.02 lat (msec): min=17, max=269, avg=72.01, stdev=45.02 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 37], | 30.00th=[ 43], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 65], | 70.00th=[ 83], 80.00th=[ 104], 90.00th=[ 140], 95.00th=[ 161], | 99.00th=[ 236], 99.50th=[ 255], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 30, max= 318, per=23.90%, avg=130.02, stdev=72.93, samples=90 iops : min= 1, max= 19, avg= 7.24, stdev= 4.57, samples=90 lat (msec) : 10=0.39%, 20=10.55%, 50=45.05%, 100=27.60%, 250=15.76% lat (msec) : 500=0.65% cpu : usr=0.03%, sys=2.03%, ctx=1244, 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=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=179310: Tue May 19 13:05:33 2026 read: IOPS=8, BW=130KiB/s (134kB/s)(6032KiB/46236msec) clat (msec): min=7, max=371, avg=51.18, stdev=44.45 lat (msec): min=7, max=371, avg=51.18, stdev=44.45 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 57], 80.00th=[ 78], 90.00th=[ 113], 95.00th=[ 142], | 99.00th=[ 188], 99.50th=[ 279], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 30, max= 411, per=25.55%, avg=132.10, stdev=87.12, samples=89 iops : min= 1, max= 25, avg= 7.38, stdev= 5.48, samples=89 write: IOPS=8, BW=135KiB/s (139kB/s)(6256KiB/46236msec); 0 zone resets clat (msec): min=16, max=287, avg=68.72, stdev=44.58 lat (msec): min=16, max=287, avg=68.72, stdev=44.58 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 64], | 70.00th=[ 80], 80.00th=[ 99], 90.00th=[ 134], 95.00th=[ 165], | 99.00th=[ 243], 99.50th=[ 288], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 30, max= 380, per=25.07%, avg=136.39, stdev=86.02, samples=90 iops : min= 1, max= 23, avg= 7.64, stdev= 5.40, samples=90 lat (msec) : 10=0.52%, 20=10.29%, 50=44.92%, 100=27.21%, 250=16.41% lat (msec) : 500=0.65% cpu : usr=0.04%, sys=1.96%, ctx=1245, 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=517KiB/s (530kB/s), 124KiB/s-135KiB/s (127kB/s-138kB/s), io=23.4MiB (24.5MB), run=45897-46319msec WRITE: bw=544KiB/s (557kB/s), 130KiB/s-141KiB/s (133kB/s-145kB/s), io=24.6MiB (25.8MB), run=45897-46319msec 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=179328: Tue May 19 13:05:52 2026 read: IOPS=0, BW=1004KiB/s (1028kB/s)(7168KiB/7141msec) clat (msec): min=130, max=3158, avg=616.52, stdev=1121.60 lat (msec): min=130, max=3158, avg=616.52, stdev=1121.60 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 161], | 30.00th=[ 180], 40.00th=[ 180], 50.00th=[ 205], 60.00th=[ 230], | 70.00th=[ 230], 80.00th=[ 255], 90.00th=[ 3171], 95.00th=[ 3171], | 99.00th=[ 3171], 99.50th=[ 3171], 99.90th=[ 3171], 99.95th=[ 3171], | 99.99th=[ 3171] bw ( KiB/s): min= 1450, max= 4063, per=94.07%, avg=2324.40, stdev=1004.54, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=717KiB/s (734kB/s)(5120KiB/7141msec); 0 zone resets clat (msec): min=300, max=862, avg=551.44, stdev=219.92 lat (msec): min=300, max=862, avg=551.54, stdev=219.91 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 489], 60.00th=[ 489], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1973, max= 4071, per=77.78%, avg=2690.33, stdev=1196.00, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.85%, ctx=528, 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=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=179329: Tue May 19 13:05:52 2026 read: IOPS=0, BW=247KiB/s (253kB/s)(2048KiB/8288msec) clat (msec): min=273, max=3931, avg=2102.51, stdev=2585.92 lat (msec): min=273, max=3931, avg=2102.51, stdev=2585.92 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 3943], | 70.00th=[ 3943], 80.00th=[ 3943], 90.00th=[ 3943], 95.00th=[ 3943], | 99.00th=[ 3943], 99.50th=[ 3943], 99.90th=[ 3943], 99.95th=[ 3943], | 99.99th=[ 3943] bw ( KiB/s): min= 1969, max= 2048, per=81.28%, avg=2008.50, stdev=55.86, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1236KiB/s (1265kB/s)(10.0MiB/8288msec); 0 zone resets clat (msec): min=125, max=877, avg=393.16, stdev=259.97 lat (msec): min=125, max=877, avg=393.31, stdev=259.92 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 155], | 30.00th=[ 264], 40.00th=[ 288], 50.00th=[ 292], 60.00th=[ 313], | 70.00th=[ 359], 80.00th=[ 422], 90.00th=[ 835], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1973, max= 4079, per=68.46%, avg=2368.17, stdev=838.58, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (msec) : 250=16.67%, 500=58.33%, 1000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=9.74%, ctx=575, 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=179330: Tue May 19 13:05:52 2026 read: IOPS=0, BW=880KiB/s (901kB/s)(6144KiB/6981msec) clat (usec): min=491, max=244430, avg=145618.62, stdev=113225.47 lat (usec): min=492, max=244431, avg=145619.82, stdev=113225.45 clat percentiles (usec): | 1.00th=[ 494], 5.00th=[ 494], 10.00th=[ 494], 20.00th=[ 2769], | 30.00th=[ 2769], 40.00th=[185598], 50.00th=[185598], 60.00th=[212861], | 70.00th=[227541], 80.00th=[227541], 90.00th=[244319], 95.00th=[244319], | 99.00th=[244319], 99.50th=[244319], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 2039, max= 4071, per=100.00%, avg=3352.00, stdev=1138.81, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=880KiB/s (901kB/s)(6144KiB/6981msec); 0 zone resets clat (msec): min=204, max=4189, avg=992.37, stdev=1578.79 lat (msec): min=204, max=4189, avg=992.42, stdev=1578.79 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 326], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 4178], 95.00th=[ 4178], | 99.00th=[ 4178], 99.50th=[ 4178], 99.90th=[ 4178], 99.95th=[ 4178], | 99.99th=[ 4178] bw ( KiB/s): min= 3946, max= 4079, per=100.00%, avg=4026.67, stdev=70.88, samples=3 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=3 lat (usec) : 500=8.33% lat (msec) : 4=8.33%, 250=50.00%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=6.93%, ctx=188, 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=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=179331: Tue May 19 13:05:52 2026 read: IOPS=0, BW=738KiB/s (755kB/s)(5120KiB/6940msec) clat (usec): min=453, max=271024, avg=158333.51, stdev=144209.61 lat (usec): min=454, max=271025, avg=158334.60, stdev=144209.90 clat percentiles (usec): | 1.00th=[ 453], 5.00th=[ 453], 10.00th=[ 453], 20.00th=[ 453], | 30.00th=[ 486], 40.00th=[ 486], 50.00th=[256902], 60.00th=[256902], | 70.00th=[263193], 80.00th=[263193], 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= 1973, max= 6107, per=100.00%, avg=4040.00, stdev=2923.18, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1033KiB/s (1058kB/s)(7168KiB/6940msec); 0 zone resets clat (msec): min=216, max=4336, avg=861.30, stdev=1533.78 lat (msec): min=216, max=4337, avg=861.37, stdev=1533.79 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 234], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 296], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 388], 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= 1973, max= 4087, per=82.11%, avg=2840.20, stdev=1134.77, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (usec) : 500=16.67% lat (msec) : 250=25.00%, 500=50.00%, >=2000=8.33% cpu : usr=0.00%, sys=8.40%, ctx=193, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2471KiB/s (2530kB/s), 247KiB/s-1004KiB/s (253kB/s-1028kB/s), io=20.0MiB (20.0MB), run=6940-8288msec WRITE: bw=3459KiB/s (3542kB/s), 717KiB/s-1236KiB/s (734kB/s-1265kB/s), io=28.0MiB (29.4MB), run=6940-8288msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179333: Tue May 19 13:05:52 2026 read: IOPS=0, BW=981KiB/s (1004kB/s)(7168KiB/7310msec) clat (msec): min=78, max=3116, avg=567.51, stdev=1126.96 lat (msec): min=78, max=3116, avg=567.52, stdev=1126.96 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 91], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 107], 60.00th=[ 165], | 70.00th=[ 165], 80.00th=[ 313], 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= 2003, max= 6131, per=100.00%, avg=4057.67, stdev=2064.06, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=0, BW=700KiB/s (717kB/s)(5120KiB/7310msec); 0 zone resets clat (msec): min=462, max=1036, avg=653.97, stdev=222.68 lat (msec): min=462, max=1037, avg=654.07, stdev=222.68 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 550], 40.00th=[ 550], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1910, max= 2048, per=58.91%, avg=2007.00, stdev=65.04, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=16.67%, 750=25.00%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.01%, sys=3.08%, ctx=109, 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=179334: Tue May 19 13:05:52 2026 read: IOPS=0, BW=243KiB/s (249kB/s)(2048KiB/8415msec) clat (msec): min=90, max=3774, avg=1932.41, stdev=2604.89 lat (msec): min=90, max=3774, avg=1932.41, stdev=2604.88 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 91], | 30.00th=[ 91], 40.00th=[ 91], 50.00th=[ 91], 60.00th=[ 3775], | 70.00th=[ 3775], 80.00th=[ 3775], 90.00th=[ 3775], 95.00th=[ 3775], | 99.00th=[ 3775], 99.50th=[ 3775], 99.90th=[ 3775], 99.95th=[ 3775], | 99.99th=[ 3775] bw ( KiB/s): min= 1961, max= 2003, per=81.46%, avg=1982.00, stdev=29.70, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1217KiB/s (1246kB/s)(10.0MiB/8415msec); 0 zone resets clat (msec): min=194, max=1072, avg=450.39, stdev=263.68 lat (msec): min=194, max=1072, avg=450.48, stdev=263.67 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 205], | 30.00th=[ 243], 40.00th=[ 275], 50.00th=[ 393], 60.00th=[ 468], | 70.00th=[ 523], 80.00th=[ 558], 90.00th=[ 584], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 2003, max= 4015, per=67.78%, avg=2309.43, stdev=752.25, samples=7 iops : min= 1, max= 3, avg= 1.43, stdev= 0.79, samples=7 lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=25.00%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=4.64%, 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=179335: Tue May 19 13:05:52 2026 read: IOPS=0, BW=794KiB/s (813kB/s)(6144KiB/7740msec) clat (msec): min=86, max=494, avg=242.18, stdev=198.34 lat (msec): min=86, max=494, avg=242.18, stdev=198.34 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 88], | 30.00th=[ 88], 40.00th=[ 100], 50.00th=[ 100], 60.00th=[ 197], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 2003, max= 2048, per=83.29%, avg=2026.40, stdev=18.92, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=0, BW=794KiB/s (813kB/s)(6144KiB/7740msec); 0 zone resets clat (msec): min=191, max=4430, avg=1036.37, stdev=1675.00 lat (msec): min=191, max=4430, avg=1036.47, stdev=1675.01 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 262], 50.00th=[ 262], 60.00th=[ 401], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 4463], 95.00th=[ 4463], | 99.00th=[ 4463], 99.50th=[ 4463], 99.90th=[ 4463], 99.95th=[ 4463], | 99.99th=[ 4463] bw ( KiB/s): min= 1910, max= 4023, per=70.63%, avg=2406.20, stdev=905.44, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 100=25.00%, 250=25.00%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.04%, sys=2.60%, ctx=102, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179336: Tue May 19 13:05:52 2026 read: IOPS=0, BW=679KiB/s (695kB/s)(5120KiB/7541msec) clat (msec): min=100, max=691, avg=263.01, stdev=245.79 lat (msec): min=100, max=691, avg=263.01, stdev=245.79 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 146], 60.00th=[ 146], | 70.00th=[ 247], 80.00th=[ 247], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 4007, max= 4079, per=100.00%, avg=4043.00, stdev=50.91, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=951KiB/s (973kB/s)(7168KiB/7541msec); 0 zone resets clat (msec): min=134, max=4582, avg=885.26, stdev=1636.73 lat (msec): min=135, max=4582, avg=885.60, stdev=1636.60 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 159], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 247], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 575], 90.00th=[ 4597], 95.00th=[ 4597], | 99.00th=[ 4597], 99.50th=[ 4597], 99.90th=[ 4597], 99.95th=[ 4597], | 99.99th=[ 4597] bw ( KiB/s): min= 2019, max= 4063, per=79.45%, avg=2707.00, stdev=1174.37, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=66.67%, 500=8.33%, 750=16.67%, >=2000=8.33% cpu : usr=0.01%, sys=3.38%, ctx=107, 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=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=2434KiB/s (2492kB/s), 243KiB/s-981KiB/s (249kB/s-1004kB/s), io=20.0MiB (20.0MB), run=7310-8415msec WRITE: bw=3407KiB/s (3489kB/s), 700KiB/s-1217KiB/s (717kB/s-1246kB/s), io=28.0MiB (29.4MB), run=7310-8415msec 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=179344: Tue May 19 13:06:06 2026 read: IOPS=1, BW=4787KiB/s (4902kB/s)(12.0MiB/2567msec) clat (msec): min=600, max=993, avg=841.33, stdev=211.21 lat (msec): min=600, max=993, avg=841.33, stdev=211.21 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 927], 50.00th=[ 927], 60.00th=[ 927], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7907, max= 8094, per=100.00%, avg=8000.50, stdev=132.23, 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=12.90%, ctx=363, 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=179346: Tue May 19 13:06:06 2026 read: IOPS=0, BW=2091KiB/s (2141kB/s)(4096KiB/1959msec) clat (nsec): min=572320k, max=572320k, avg=572319870.00, stdev= 0.00 lat (nsec): min=572322k, max=572322k, avg=572322451.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7937, max= 7937, per=100.00%, avg=7937.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4182KiB/s (4282kB/s)(8192KiB/1959msec); 0 zone resets clat (msec): min=405, max=818, avg=611.90, stdev=291.98 lat (msec): min=410, max=818, avg=614.67, stdev=288.55 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 818], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 8031, max= 8031, per=69.71%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=7.56%, ctx=80, 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=179349: Tue May 19 13:06:06 2026 write: IOPS=1, BW=4321KiB/s (4424kB/s)(12.0MiB/2844msec); 0 zone resets clat (msec): min=407, max=1265, avg=895.99, stdev=440.93 lat (msec): min=408, max=1266, avg=897.52, stdev=441.57 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8031, max= 8047, per=69.78%, avg=8039.00, stdev=11.31, 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=6.47%, ctx=60, 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=179351: Tue May 19 13:06:06 2026 write: IOPS=1, BW=5061KiB/s (5182kB/s)(12.0MiB/2428msec); 0 zone resets clat (msec): min=640, max=906, avg=766.47, stdev=133.75 lat (msec): min=641, max=907, avg=767.01, stdev=133.48 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 911], 80.00th=[ 911], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7937, max= 7984, per=69.10%, avg=7960.50, stdev=33.23, 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=6.67%, ctx=43, 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=6383KiB/s (6536kB/s), 2091KiB/s-4787KiB/s (2141kB/s-4902kB/s), io=16.0MiB (16.8MB), run=1959-2567msec WRITE: bw=11.3MiB/s (11.8MB/s), 4182KiB/s-5061KiB/s (4282kB/s-5182kB/s), io=32.0MiB (33.6MB), run=1959-2844msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179345: Tue May 19 13:06:06 2026 read: IOPS=0, BW=4009KiB/s (4105kB/s)(12.0MiB/3065msec) clat (msec): min=212, max=1392, avg=941.64, stdev=637.67 lat (msec): min=212, max=1392, avg=941.64, stdev=637.67 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.20%, ctx=37, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179347: Tue May 19 13:06:06 2026 read: IOPS=0, BW=1522KiB/s (1558kB/s)(4096KiB/2692msec) clat (nsec): min=826993k, max=826993k, avg=826993297.00, stdev= 0.00 lat (nsec): min=826996k, max=826996k, avg=826995881.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 827], 50.00th=[ 827], 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= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3043KiB/s (3116kB/s)(8192KiB/2692msec); 0 zone resets clat (msec): min=616, max=1164, avg=890.48, stdev=387.38 lat (msec): min=616, max=1164, avg=890.83, stdev=387.39 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 1167], | 70.00th=[ 1167], 80.00th=[ 1167], 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= 8062, max= 8062, per=78.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.01%, ctx=52, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179348: Tue May 19 13:06:06 2026 write: IOPS=0, BW=3876KiB/s (3969kB/s)(12.0MiB/3170msec); 0 zone resets clat (msec): min=188, max=1543, avg=980.73, stdev=706.07 lat (msec): min=188, max=1543, avg=981.36, stdev=706.12 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8094, max= 8192, per=78.78%, avg=8143.00, stdev=69.30, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.16%, ctx=43, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179350: Tue May 19 13:06:06 2026 write: IOPS=1, BW=5780KiB/s (5919kB/s)(12.0MiB/2126msec); 0 zone resets clat (msec): min=295, max=1227, avg=688.21, stdev=482.61 lat (msec): min=296, max=1227, avg=688.63, stdev=482.61 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 5793, max= 8110, per=67.26%, avg=6951.50, stdev=1638.37, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.04%, ctx=46, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5346KiB/s (5474kB/s), 1522KiB/s-4009KiB/s (1558kB/s-4105kB/s), io=16.0MiB (16.8MB), run=2692-3065msec WRITE: bw=10.1MiB/s (10.6MB/s), 3043KiB/s-5780KiB/s (3116kB/s-5919kB/s), io=32.0MiB (33.6MB), run=2126-3170msec