== sanity test 398b: DIO and buffer IO race ============== 05:18:54 (1788513534) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.08476 s, 7.1 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=144786: Fri Sep 4 05:21:21 2026 read: IOPS=12, BW=48.1KiB/s (49.2kB/s)(5992KiB/124672msec) clat (usec): min=32, max=260265, avg=41188.93, stdev=31630.65 lat (usec): min=32, max=260266, avg=41190.34, stdev=31630.63 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 61], 10.00th=[ 553], 20.00th=[ 18220], | 30.00th=[ 23987], 40.00th=[ 28443], 50.00th=[ 34341], 60.00th=[ 42206], | 70.00th=[ 51119], 80.00th=[ 61080], 90.00th=[ 80217], 95.00th=[ 94897], | 99.00th=[149947], 99.50th=[179307], 99.90th=[248513], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 7, max= 111, per=25.12%, avg=47.73, stdev=19.69, samples=245 iops : min= 1, max= 27, avg=11.30, stdev= 4.96, samples=245 write: IOPS=12, BW=50.5KiB/s (51.7kB/s)(6296KiB/124672msec); 0 zone resets clat (usec): min=995, max=868740, avg=39745.91, stdev=45690.53 lat (usec): min=996, max=868742, avg=39748.80, stdev=45689.90 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1237], 10.00th=[ 1680], 20.00th=[ 4113], | 30.00th=[ 8094], 40.00th=[ 18744], 50.00th=[ 27919], 60.00th=[ 40109], | 70.00th=[ 52167], 80.00th=[ 68682], 90.00th=[ 93848], 95.00th=[115868], | 99.00th=[166724], 99.50th=[208667], 99.90th=[396362], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 7, max= 134, per=25.22%, avg=50.19, stdev=23.13, samples=245 iops : min= 1, max= 33, avg=11.91, stdev= 5.83, samples=245 lat (usec) : 50=0.46%, 100=3.87%, 250=0.49%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=6.05%, 4=4.13%, 10=7.00%, 20=9.80%, 50=36.43% lat (msec) : 100=25.39%, 250=6.05%, 500=0.13%, 1000=0.03% cpu : usr=0.07%, sys=5.12%, ctx=6580, 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=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=144787: Fri Sep 4 05:21:21 2026 read: IOPS=11, BW=47.3KiB/s (48.5kB/s)(5940KiB/125467msec) clat (usec): min=28, max=270116, avg=41102.70, stdev=31704.83 lat (usec): min=28, max=270117, avg=41104.45, stdev=31704.68 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 60], 10.00th=[ 141], 20.00th=[ 18482], | 30.00th=[ 23725], 40.00th=[ 28967], 50.00th=[ 34341], 60.00th=[ 41681], | 70.00th=[ 50594], 80.00th=[ 61604], 90.00th=[ 79168], 95.00th=[ 98042], | 99.00th=[147850], 99.50th=[175113], 99.90th=[248513], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 104, per=24.91%, avg=47.32, stdev=18.38, samples=244 iops : min= 1, max= 26, avg=11.20, stdev= 4.65, samples=244 write: IOPS=12, BW=50.6KiB/s (51.8kB/s)(6348KiB/125467msec); 0 zone resets clat (usec): min=988, max=884550, avg=40332.58, stdev=45017.39 lat (usec): min=989, max=884552, avg=40334.94, stdev=45016.93 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1287], 10.00th=[ 1745], 20.00th=[ 4080], | 30.00th=[ 8160], 40.00th=[ 18220], 50.00th=[ 30540], 60.00th=[ 41681], | 70.00th=[ 53740], 80.00th=[ 69731], 90.00th=[ 92799], 95.00th=[115868], | 99.00th=[164627], 99.50th=[193987], 99.90th=[341836], 99.95th=[884999], | 99.99th=[884999] bw ( KiB/s): min= 7, max= 143, per=25.11%, avg=49.96, stdev=22.00, samples=246 iops : min= 1, max= 35, avg=11.87, stdev= 5.54, samples=246 lat (usec) : 50=0.65%, 100=4.10%, 250=0.13%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=5.76%, 4=4.43%, 10=6.84%, 20=10.12%, 50=35.94% lat (msec) : 100=25.20%, 250=6.45%, 500=0.10%, 1000=0.03% cpu : usr=0.08%, sys=5.21%, ctx=6536, 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=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=144788: Fri Sep 4 05:21:21 2026 read: IOPS=12, BW=49.0KiB/s (50.2kB/s)(6028KiB/122911msec) clat (usec): min=34, max=936144, avg=40006.64, stdev=37704.54 lat (usec): min=34, max=936145, avg=40009.95, stdev=37705.30 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 60], 10.00th=[ 103], 20.00th=[ 17695], | 30.00th=[ 23725], 40.00th=[ 28443], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 47449], 80.00th=[ 58983], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[135267], 99.50th=[158335], 99.90th=[250610], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 7, max= 127, per=25.95%, avg=49.31, stdev=20.59, samples=239 iops : min= 1, max= 31, avg=11.70, stdev= 5.17, samples=239 write: IOPS=12, BW=50.9KiB/s (52.2kB/s)(6260KiB/122911msec); 0 zone resets clat (usec): min=883, max=271069, avg=39741.08, stdev=40197.71 lat (usec): min=884, max=271070, avg=39745.65, stdev=40198.64 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1270], 10.00th=[ 1762], 20.00th=[ 4178], | 30.00th=[ 8717], 40.00th=[ 19792], 50.00th=[ 29754], 60.00th=[ 40109], | 70.00th=[ 52691], 80.00th=[ 68682], 90.00th=[ 93848], 95.00th=[115868], | 99.00th=[181404], 99.50th=[204473], 99.90th=[258999], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 104, per=25.50%, avg=50.74, stdev=20.80, samples=241 iops : min= 1, max= 26, avg=12.05, stdev= 5.24, samples=241 lat (usec) : 50=0.62%, 100=4.26%, 250=0.20%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=5.79%, 4=4.00%, 10=6.77%, 20=9.96%, 50=38.25% lat (msec) : 100=23.60%, 250=6.05%, 500=0.13%, 1000=0.03% cpu : usr=0.07%, sys=5.10%, ctx=6486, 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=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=144789: Fri Sep 4 05:21:21 2026 read: IOPS=11, BW=47.9KiB/s (49.1kB/s)(6052KiB/126288msec) clat (usec): min=34, max=197985, avg=39768.75, stdev=29509.38 lat (usec): min=35, max=197987, avg=39772.31, stdev=29509.38 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 60], 10.00th=[ 955], 20.00th=[ 18220], | 30.00th=[ 23725], 40.00th=[ 28705], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 48497], 80.00th=[ 58983], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[141558], 99.50th=[164627], 99.90th=[191890], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 7, max= 150, per=25.12%, avg=47.74, stdev=21.40, samples=247 iops : min= 1, max= 37, avg=11.30, stdev= 5.39, samples=247 write: IOPS=12, BW=49.4KiB/s (50.6kB/s)(6236KiB/126288msec); 0 zone resets clat (usec): min=935, max=908312, avg=42123.66, stdev=46598.39 lat (usec): min=936, max=908841, avg=42126.08, stdev=46605.37 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1237], 10.00th=[ 1680], 20.00th=[ 4228], | 30.00th=[ 9634], 40.00th=[ 21365], 50.00th=[ 33162], 60.00th=[ 43254], | 70.00th=[ 56361], 80.00th=[ 71828], 90.00th=[ 94897], 95.00th=[120062], | 99.00th=[177210], 99.50th=[210764], 99.90th=[337642], 99.95th=[910164], | 99.99th=[910164] bw ( KiB/s): min= 7, max= 126, per=24.68%, avg=49.11, stdev=19.92, samples=247 iops : min= 1, max= 31, avg=11.64, stdev= 5.02, samples=247 lat (usec) : 50=0.55%, 100=3.68%, 250=0.46%, 500=0.13%, 750=0.10% lat (usec) : 1000=0.13% lat (msec) : 2=5.86%, 4=3.91%, 10=6.02%, 20=9.80%, 50=37.70% lat (msec) : 100=25.07%, 250=6.48%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=5.06%, ctx=6719, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=190KiB/s (195kB/s), 47.3KiB/s-49.0KiB/s (48.5kB/s-50.2kB/s), io=23.4MiB (24.6MB), run=122911-126288msec WRITE: bw=199KiB/s (204kB/s), 49.4KiB/s-50.9KiB/s (50.6kB/s-52.2kB/s), io=24.6MiB (25.7MB), run=122911-126288msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144791: Fri Sep 4 05:23:43 2026 read: IOPS=5, BW=22.4KiB/s (22.0kB/s)(5992KiB/267192msec) clat (msec): min=5, max=1042, avg=35.19, stdev=44.13 lat (msec): min=5, max=1042, avg=35.20, stdev=44.13 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 74], 95.00th=[ 102], | 99.00th=[ 178], 99.50th=[ 241], 99.90th=[ 439], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 103, per=27.71%, avg=24.66, stdev=16.71, samples=467 iops : min= 1, max= 25, avg= 5.54, stdev= 4.22, samples=467 write: IOPS=5, BW=23.6KiB/s (24.1kB/s)(6296KiB/267192msec); 0 zone resets clat (msec): min=34, max=515, avg=136.15, stdev=60.16 lat (msec): min=34, max=515, avg=136.16, stdev=60.16 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 73], 20.00th=[ 87], | 30.00th=[ 101], 40.00th=[ 113], 50.00th=[ 125], 60.00th=[ 138], | 70.00th=[ 155], 80.00th=[ 180], 90.00th=[ 218], 95.00th=[ 249], | 99.00th=[ 321], 99.50th=[ 363], 99.90th=[ 510], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 7, max= 56, per=24.58%, avg=23.11, stdev=10.00, samples=523 iops : min= 1, max= 14, avg= 5.15, stdev= 2.56, samples=523 lat (msec) : 10=3.45%, 20=17.42%, 50=19.14%, 100=21.55%, 250=35.71% lat (msec) : 500=2.60%, 750=0.10%, 2000=0.03% cpu : usr=0.04%, sys=1.12%, ctx=5034, 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=144792: Fri Sep 4 05:23:43 2026 read: IOPS=5, BW=22.3KiB/s (22.8kB/s)(5940KiB/266767msec) clat (msec): min=4, max=967, avg=35.39, stdev=41.76 lat (msec): min=4, max=967, avg=35.39, stdev=41.76 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 74], 95.00th=[ 100], | 99.00th=[ 150], 99.50th=[ 205], 99.90th=[ 477], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7, max= 80, per=27.92%, avg=24.85, stdev=15.91, samples=462 iops : min= 1, max= 20, avg= 5.59, stdev= 4.01, samples=462 write: IOPS=5, BW=23.8KiB/s (24.4kB/s)(6348KiB/266767msec); 0 zone resets clat (msec): min=39, max=509, avg=134.87, stdev=55.46 lat (msec): min=39, max=509, avg=134.87, stdev=55.46 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 89], | 30.00th=[ 101], 40.00th=[ 113], 50.00th=[ 126], 60.00th=[ 138], | 70.00th=[ 155], 80.00th=[ 178], 90.00th=[ 205], 95.00th=[ 241], | 99.00th=[ 305], 99.50th=[ 330], 99.90th=[ 498], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 7, max= 48, per=24.89%, avg=23.40, stdev= 9.43, samples=523 iops : min= 1, max= 12, avg= 5.22, stdev= 2.43, samples=523 lat (msec) : 10=3.06%, 20=16.54%, 50=19.95%, 100=21.84%, 250=36.26% lat (msec) : 500=2.28%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.12%, ctx=4917, 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=144793: Fri Sep 4 05:23:43 2026 read: IOPS=5, BW=22.6KiB/s (23.1kB/s)(6028KiB/266970msec) clat (msec): min=5, max=429, avg=34.58, stdev=33.17 lat (msec): min=5, max=429, avg=34.59, stdev=33.17 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 48], 90.00th=[ 74], 95.00th=[ 94], | 99.00th=[ 161], 99.50th=[ 188], 99.90th=[ 330], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 7, max= 103, per=27.28%, avg=24.28, stdev=16.32, samples=479 iops : min= 1, max= 25, avg= 5.44, stdev= 4.12, samples=479 write: IOPS=5, BW=23.4KiB/s (24.0kB/s)(6260KiB/266970msec); 0 zone resets clat (msec): min=33, max=1082, avg=137.19, stdev=65.41 lat (msec): min=34, max=1082, avg=137.19, stdev=65.42 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 88], | 30.00th=[ 99], 40.00th=[ 111], 50.00th=[ 123], 60.00th=[ 140], | 70.00th=[ 157], 80.00th=[ 180], 90.00th=[ 218], 95.00th=[ 257], | 99.00th=[ 334], 99.50th=[ 397], 99.90th=[ 514], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 48, per=24.53%, avg=23.06, stdev= 9.60, samples=522 iops : min= 1, max= 12, avg= 5.13, stdev= 2.47, samples=522 lat (msec) : 10=3.78%, 20=16.05%, 50=20.15%, 100=23.18%, 250=33.89% lat (msec) : 500=2.90%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.11%, ctx=5093, 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=144794: Fri Sep 4 05:23:43 2026 read: IOPS=5, BW=22.8KiB/s (23.4kB/s)(6052KiB/265100msec) clat (msec): min=5, max=474, avg=33.53, stdev=33.10 lat (msec): min=5, max=474, avg=33.53, stdev=33.10 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 47], 90.00th=[ 73], 95.00th=[ 97], | 99.00th=[ 140], 99.50th=[ 167], 99.90th=[ 435], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 7, max= 111, per=28.15%, avg=25.05, stdev=16.55, samples=466 iops : min= 1, max= 27, avg= 5.63, stdev= 4.17, samples=466 write: IOPS=5, BW=23.5KiB/s (24.1kB/s)(6236KiB/265100msec); 0 zone resets clat (msec): min=33, max=1147, avg=137.41, stdev=64.50 lat (msec): min=33, max=1147, avg=137.41, stdev=64.50 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 66], 10.00th=[ 75], 20.00th=[ 88], | 30.00th=[ 100], 40.00th=[ 111], 50.00th=[ 126], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 180], 90.00th=[ 215], 95.00th=[ 251], | 99.00th=[ 313], 99.50th=[ 393], 99.90th=[ 506], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 48, per=24.54%, avg=23.06, stdev= 9.82, samples=520 iops : min= 1, max= 12, avg= 5.13, stdev= 2.51, samples=520 lat (msec) : 10=3.78%, 20=17.38%, 50=19.50%, 100=21.91%, 250=34.90% lat (msec) : 500=2.47%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.12%, ctx=4990, 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=89.9KiB/s (92.0kB/s), 22.3KiB/s-22.8KiB/s (22.8kB/s-23.4kB/s), io=23.4MiB (24.6MB), run=265100-267192msec WRITE: bw=94.1KiB/s (96.3kB/s), 23.4KiB/s-23.8KiB/s (24.0kB/s-24.4kB/s), io=24.6MiB (25.7MB), run=265100-267192msec 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=144848: Fri Sep 4 05:24:28 2026 read: IOPS=11, BW=189KiB/s (193kB/s)(5920KiB/31404msec) clat (usec): min=38, max=282441, avg=45078.71, stdev=35916.18 lat (usec): min=39, max=282442, avg=45081.02, stdev=35917.23 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 63], 10.00th=[ 75], 20.00th=[ 13173], | 30.00th=[ 27395], 40.00th=[ 33424], 50.00th=[ 40633], 60.00th=[ 48497], | 70.00th=[ 57934], 80.00th=[ 71828], 90.00th=[ 86508], 95.00th=[103285], | 99.00th=[156238], 99.50th=[183501], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 90, max= 380, per=26.50%, avg=188.18, stdev=64.85, samples=61 iops : min= 5, max= 23, avg=10.97, stdev= 4.11, samples=61 write: IOPS=12, BW=203KiB/s (208kB/s)(6368KiB/31404msec); 0 zone resets clat (usec): min=1564, max=213440, avg=36712.24, stdev=38455.21 lat (usec): min=1565, max=213442, avg=36714.87, stdev=38455.21 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2278], 10.00th=[ 3064], 20.00th=[ 5669], | 30.00th=[ 8455], 40.00th=[ 14091], 50.00th=[ 24511], 60.00th=[ 33817], | 70.00th=[ 46924], 80.00th=[ 62653], 90.00th=[ 91751], 95.00th=[117965], | 99.00th=[156238], 99.50th=[193987], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 62, max= 447, per=27.26%, avg=203.62, stdev=88.74, samples=61 iops : min= 3, max= 27, avg=11.95, stdev= 5.59, samples=61 lat (usec) : 50=0.65%, 100=6.51%, 250=1.30%, 500=0.65% lat (msec) : 2=2.21%, 4=5.34%, 10=10.16%, 20=7.42%, 50=32.29% lat (msec) : 100=26.17%, 250=7.16%, 500=0.13% cpu : usr=0.07%, sys=5.23%, ctx=1482, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144850: Fri Sep 4 05:24:28 2026 read: IOPS=10, BW=170KiB/s (174kB/s)(5744KiB/33730msec) clat (usec): min=41, max=257256, avg=50149.17, stdev=38931.84 lat (usec): min=41, max=257258, avg=50160.05, stdev=38929.60 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 70], 10.00th=[ 78], 20.00th=[ 20317], | 30.00th=[ 30802], 40.00th=[ 40109], 50.00th=[ 46924], 60.00th=[ 55313], | 70.00th=[ 63177], 80.00th=[ 74974], 90.00th=[ 93848], 95.00th=[108528], | 99.00th=[214959], 99.50th=[240124], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 31, max= 318, per=23.88%, avg=169.53, stdev=66.26, samples=66 iops : min= 1, max= 19, avg= 9.79, stdev= 4.20, samples=66 write: IOPS=12, BW=194KiB/s (199kB/s)(6544KiB/33730msec); 0 zone resets clat (usec): min=1710, max=303477, avg=37378.59, stdev=40306.21 lat (usec): min=1712, max=303480, avg=37382.19, stdev=40305.53 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2073], 10.00th=[ 3425], 20.00th=[ 6456], | 30.00th=[ 9503], 40.00th=[ 14353], 50.00th=[ 23725], 60.00th=[ 34866], | 70.00th=[ 49546], 80.00th=[ 65274], 90.00th=[ 89654], 95.00th=[113771], | 99.00th=[154141], 99.50th=[179307], 99.90th=[304088], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 31, max= 438, per=26.29%, avg=196.40, stdev=86.40, samples=65 iops : min= 1, max= 27, avg=11.49, stdev= 5.44, samples=65 lat (usec) : 50=0.39%, 100=5.86%, 250=1.04% lat (msec) : 2=2.47%, 4=4.17%, 10=10.42%, 20=10.16%, 50=27.99% lat (msec) : 100=30.21%, 250=6.90%, 500=0.39% cpu : usr=0.08%, sys=5.07%, ctx=1564, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144851: Fri Sep 4 05:24:28 2026 read: IOPS=11, BW=187KiB/s (191kB/s)(6256KiB/33493msec) clat (usec): min=37, max=244566, avg=47412.20, stdev=35673.75 lat (usec): min=38, max=244568, avg=47420.68, stdev=35678.81 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 64], 10.00th=[ 76], 20.00th=[ 19792], | 30.00th=[ 31065], 40.00th=[ 36963], 50.00th=[ 45351], 60.00th=[ 51119], | 70.00th=[ 60031], 80.00th=[ 72877], 90.00th=[ 89654], 95.00th=[102237], | 99.00th=[179307], 99.50th=[204473], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 31, max= 446, per=26.30%, avg=186.74, stdev=80.73, samples=66 iops : min= 1, max= 27, avg=10.88, stdev= 5.06, samples=66 write: IOPS=11, BW=180KiB/s (184kB/s)(6032KiB/33493msec); 0 zone resets clat (usec): min=1546, max=319535, avg=38703.19, stdev=40361.68 lat (usec): min=1549, max=319538, avg=38720.45, stdev=40354.40 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2114], 10.00th=[ 3097], 20.00th=[ 5473], | 30.00th=[ 9765], 40.00th=[ 15533], 50.00th=[ 26608], 60.00th=[ 39060], | 70.00th=[ 50594], 80.00th=[ 66323], 90.00th=[ 92799], 95.00th=[121111], | 99.00th=[170918], 99.50th=[183501], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 63, max= 381, per=24.01%, avg=179.38, stdev=67.65, samples=66 iops : min= 3, max= 23, avg=10.42, stdev= 4.27, samples=66 lat (usec) : 50=0.78%, 100=6.51%, 250=0.78%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.34%, 4=5.34%, 10=7.68%, 20=8.07%, 50=31.90% lat (msec) : 100=29.30%, 250=6.64%, 500=0.13% cpu : usr=0.08%, sys=5.26%, ctx=1592, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144852: Fri Sep 4 05:24:28 2026 read: IOPS=11, BW=186KiB/s (190kB/s)(6032KiB/32454msec) clat (usec): min=42, max=249834, avg=47171.44, stdev=37652.87 lat (usec): min=42, max=249835, avg=47177.71, stdev=37656.11 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 73], 10.00th=[ 85], 20.00th=[ 15795], | 30.00th=[ 29754], 40.00th=[ 37487], 50.00th=[ 43779], 60.00th=[ 49546], | 70.00th=[ 59507], 80.00th=[ 73925], 90.00th=[ 90702], 95.00th=[108528], | 99.00th=[175113], 99.50th=[227541], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 31, max= 316, per=26.50%, avg=188.13, stdev=64.47, samples=63 iops : min= 1, max= 19, avg=10.97, stdev= 4.06, samples=63 write: IOPS=12, BW=193KiB/s (197kB/s)(6256KiB/32454msec); 0 zone resets clat (usec): min=1407, max=309861, avg=36818.54, stdev=40772.74 lat (usec): min=1409, max=309864, avg=36825.03, stdev=40770.84 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2114], 10.00th=[ 3294], 20.00th=[ 5735], | 30.00th=[ 7767], 40.00th=[ 12125], 50.00th=[ 19006], 60.00th=[ 31851], | 70.00th=[ 46924], 80.00th=[ 63177], 90.00th=[ 98042], 95.00th=[116917], | 99.00th=[173016], 99.50th=[183501], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 31, max= 415, per=25.79%, avg=192.67, stdev=90.47, samples=64 iops : min= 1, max= 25, avg=11.25, stdev= 5.67, samples=64 lat (usec) : 50=0.26%, 100=6.51%, 250=1.56%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.73%, 4=4.82%, 10=10.94%, 20=9.38%, 50=29.30% lat (msec) : 100=26.43%, 250=7.42%, 500=0.13% cpu : usr=0.08%, sys=5.11%, ctx=1576, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=710KiB/s (727kB/s), 170KiB/s-189KiB/s (174kB/s-193kB/s), io=23.4MiB (24.5MB), run=31404-33730msec WRITE: bw=747KiB/s (765kB/s), 180KiB/s-203KiB/s (184kB/s-208kB/s), io=24.6MiB (25.8MB), run=31404-33730msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144853: Fri Sep 4 05:25:08 2026 read: IOPS=5, BW=81.5KiB/s (83.4kB/s)(5920KiB/72658msec) clat (msec): min=7, max=499, avg=42.29, stdev=49.90 lat (msec): min=7, max=499, avg=42.30, stdev=49.90 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 51], 90.00th=[ 88], 95.00th=[ 138], | 99.00th=[ 222], 99.50th=[ 409], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 30, max= 252, per=28.22%, avg=91.42, stdev=52.09, samples=126 iops : min= 1, max= 15, avg= 4.96, stdev= 3.34, samples=126 write: IOPS=5, BW=87.6KiB/s (89.7kB/s)(6368KiB/72658msec); 0 zone resets clat (msec): min=34, max=472, avg=142.91, stdev=63.42 lat (msec): min=34, max=472, avg=142.91, stdev=63.42 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 66], 10.00th=[ 78], 20.00th=[ 92], | 30.00th=[ 104], 40.00th=[ 116], 50.00th=[ 129], 60.00th=[ 146], | 70.00th=[ 167], 80.00th=[ 188], 90.00th=[ 222], 95.00th=[ 271], | 99.00th=[ 363], 99.50th=[ 376], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 28, max= 188, per=26.04%, avg=88.79, stdev=40.38, samples=140 iops : min= 1, max= 11, avg= 4.79, stdev= 2.61, samples=140 lat (msec) : 10=1.17%, 20=14.97%, 50=22.92%, 100=19.27%, 250=38.02% lat (msec) : 500=3.65% cpu : usr=0.04%, sys=1.10%, ctx=1282, 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=144854: Fri Sep 4 05:25:08 2026 read: IOPS=4, BW=77.8KiB/s (79.6kB/s)(5744KiB/73851msec) clat (msec): min=8, max=325, avg=42.42, stdev=46.49 lat (msec): min=8, max=325, avg=42.42, stdev=46.49 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 57], 90.00th=[ 101], 95.00th=[ 140], | 99.00th=[ 239], 99.50th=[ 271], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 29, max= 318, per=27.97%, avg=90.61, stdev=61.01, samples=125 iops : min= 1, max= 19, avg= 4.92, stdev= 3.88, samples=125 write: IOPS=5, BW=88.6KiB/s (90.7kB/s)(6544KiB/73851msec); 0 zone resets clat (msec): min=44, max=495, avg=142.26, stdev=69.21 lat (msec): min=44, max=495, avg=142.26, stdev=69.21 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 66], 10.00th=[ 75], 20.00th=[ 91], | 30.00th=[ 103], 40.00th=[ 112], 50.00th=[ 123], 60.00th=[ 138], | 70.00th=[ 159], 80.00th=[ 190], 90.00th=[ 239], 95.00th=[ 284], | 99.00th=[ 380], 99.50th=[ 435], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 30, max= 191, per=26.35%, avg=89.86, stdev=40.66, samples=143 iops : min= 1, max= 11, avg= 4.86, stdev= 2.66, samples=143 lat (msec) : 10=1.30%, 20=15.23%, 50=19.66%, 100=20.70%, 250=38.28% lat (msec) : 500=4.82% cpu : usr=0.04%, sys=1.17%, ctx=1338, 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=144855: Fri Sep 4 05:25:08 2026 read: IOPS=5, BW=87.1KiB/s (89.2kB/s)(6256KiB/71804msec) clat (msec): min=7, max=498, avg=43.02, stdev=48.80 lat (msec): min=7, max=498, avg=43.02, stdev=48.80 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 39], 80.00th=[ 50], 90.00th=[ 114], 95.00th=[ 146], | 99.00th=[ 222], 99.50th=[ 236], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 30, max= 288, per=30.02%, avg=97.28, stdev=63.91, samples=127 iops : min= 1, max= 18, avg= 5.32, stdev= 4.13, samples=127 write: IOPS=5, BW=84.0KiB/s (86.0kB/s)(6032KiB/71804msec); 0 zone resets clat (msec): min=41, max=656, avg=144.97, stdev=70.28 lat (msec): min=41, max=656, avg=144.98, stdev=70.28 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 68], 10.00th=[ 79], 20.00th=[ 95], | 30.00th=[ 108], 40.00th=[ 120], 50.00th=[ 127], 60.00th=[ 140], | 70.00th=[ 159], 80.00th=[ 180], 90.00th=[ 232], 95.00th=[ 275], | 99.00th=[ 397], 99.50th=[ 435], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 28, max= 159, per=25.77%, avg=87.87, stdev=35.18, samples=135 iops : min= 1, max= 9, avg= 4.74, stdev= 2.28, samples=135 lat (msec) : 10=0.91%, 20=15.23%, 50=24.87%, 100=15.89%, 250=38.80% lat (msec) : 500=4.17%, 750=0.13% cpu : usr=0.04%, sys=1.13%, ctx=1236, 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=144856: Fri Sep 4 05:25:08 2026 read: IOPS=5, BW=82.3KiB/s (84.2kB/s)(6032KiB/73323msec) clat (msec): min=6, max=398, avg=44.17, stdev=48.29 lat (msec): min=6, max=398, avg=44.17, stdev=48.29 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 62], 90.00th=[ 92], 95.00th=[ 153], | 99.00th=[ 271], 99.50th=[ 313], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 30, max= 286, per=29.57%, avg=95.80, stdev=62.40, samples=123 iops : min= 1, max= 17, avg= 5.24, stdev= 3.97, samples=123 write: IOPS=5, BW=85.3KiB/s (87.4kB/s)(6256KiB/73323msec); 0 zone resets clat (msec): min=47, max=465, avg=143.69, stdev=66.98 lat (msec): min=47, max=465, avg=143.70, stdev=66.98 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 69], 10.00th=[ 80], 20.00th=[ 93], | 30.00th=[ 103], 40.00th=[ 115], 50.00th=[ 127], 60.00th=[ 144], | 70.00th=[ 159], 80.00th=[ 188], 90.00th=[ 228], 95.00th=[ 275], | 99.00th=[ 388], 99.50th=[ 405], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 31, max= 160, per=25.60%, avg=87.30, stdev=39.49, samples=141 iops : min= 1, max= 10, avg= 4.70, stdev= 2.57, samples=141 lat (msec) : 10=2.73%, 20=13.67%, 50=20.57%, 100=21.74%, 250=37.24% lat (msec) : 500=4.04% cpu : usr=0.03%, sys=1.17%, ctx=1296, 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=324KiB/s (332kB/s), 77.8KiB/s-87.1KiB/s (79.6kB/s-89.2kB/s), io=23.4MiB (24.5MB), run=71804-73851msec WRITE: bw=341KiB/s (349kB/s), 84.0KiB/s-88.6KiB/s (86.0kB/s-90.7kB/s), io=24.6MiB (25.8MB), run=71804-73851msec 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=144881: Fri Sep 4 05:25:25 2026 read: IOPS=1, BW=1730KiB/s (1772kB/s)(7168KiB/4143msec) clat (usec): min=1157, max=394027, avg=225035.69, stdev=160107.87 lat (usec): min=1158, max=394028, avg=225037.14, stdev=160107.82 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1156], 10.00th=[ 1156], 20.00th=[ 1598], | 30.00th=[238027], 40.00th=[238027], 50.00th=[283116], 60.00th=[329253], | 70.00th=[329253], 80.00th=[333448], 90.00th=[392168], 95.00th=[392168], | 99.00th=[392168], 99.50th=[392168], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 1729, max= 3976, per=69.29%, avg=2896.50, stdev=1177.24, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1236KiB/s (1265kB/s)(5120KiB/4143msec); 0 zone resets clat (msec): min=355, max=589, avg=474.35, stdev=98.97 lat (msec): min=355, max=589, avg=474.42, stdev=98.97 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 393], 40.00th=[ 393], 50.00th=[ 489], 60.00th=[ 489], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1759, max= 2048, per=33.48%, avg=1959.50, stdev=135.90, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 2=16.67%, 250=8.33%, 500=58.33%, 750=16.67% cpu : usr=0.00%, sys=10.33%, ctx=186, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144882: Fri Sep 4 05:25:25 2026 read: IOPS=0, BW=418KiB/s (428kB/s)(2048KiB/4899msec) clat (msec): min=328, max=352, avg=340.13, stdev=17.03 lat (msec): min=328, max=352, avg=340.13, stdev=17.03 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 1921, max= 2039, per=47.37%, avg=1980.00, stdev=83.44, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2090KiB/s (2140kB/s)(10.0MiB/4899msec); 0 zone resets clat (msec): min=91, max=810, avg=363.38, stdev=250.46 lat (msec): min=92, max=810, avg=365.32, stdev=252.33 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 114], | 30.00th=[ 178], 40.00th=[ 197], 50.00th=[ 236], 60.00th=[ 342], | 70.00th=[ 397], 80.00th=[ 625], 90.00th=[ 642], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1759, max= 6131, per=43.63%, avg=2553.29, stdev=1580.62, samples=7 iops : min= 1, max= 5, avg= 1.57, stdev= 1.51, samples=7 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.02%, sys=12.17%, ctx=177, 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=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=144883: Fri Sep 4 05:25:25 2026 read: IOPS=1, BW=1700KiB/s (1740kB/s)(6144KiB/3615msec) clat (msec): min=2, max=334, avg=225.16, stdev=117.42 lat (msec): min=2, max=334, avg=225.17, stdev=117.42 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 266], | 70.00th=[ 296], 80.00th=[ 296], 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= 1759, max= 4096, per=58.82%, avg=2458.75, stdev=1096.92, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1700KiB/s (1740kB/s)(6144KiB/3615msec); 0 zone resets clat (msec): min=212, max=747, avg=360.39, stdev=197.23 lat (msec): min=212, max=747, avg=360.47, stdev=197.23 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 262], 50.00th=[ 262], 60.00th=[ 313], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1759, max= 3126, per=37.87%, avg=2216.25, stdev=616.20, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 4=8.33%, 250=25.00%, 500=58.33%, 750=8.33% cpu : usr=0.03%, sys=13.03%, ctx=232, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144886: Fri Sep 4 05:25:25 2026 read: IOPS=1, BW=1740KiB/s (1781kB/s)(5120KiB/2943msec) clat (usec): min=391, max=268485, avg=134084.89, stdev=132345.91 lat (usec): min=392, max=268486, avg=134086.01, stdev=132346.20 clat percentiles (usec): | 1.00th=[ 392], 5.00th=[ 392], 10.00th=[ 392], 20.00th=[ 392], | 30.00th=[ 611], 40.00th=[ 611], 50.00th=[139461], 60.00th=[139461], | 70.00th=[261096], 80.00th=[261096], 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= 1988, max= 6144, per=97.27%, avg=4066.00, stdev=2938.74, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=2, BW=2436KiB/s (2494kB/s)(7168KiB/2943msec); 0 zone resets clat (msec): min=79, max=527, avg=295.79, stdev=172.61 lat (msec): min=79, max=528, avg=295.88, stdev=172.62 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 138], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 268], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 518], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 1651, max= 6144, per=46.81%, avg=2739.20, stdev=1908.46, samples=5 iops : min= 1, max= 6, avg= 2.00, stdev= 2.24, samples=5 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=16.18%, ctx=167, 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=4180KiB/s (4281kB/s), 418KiB/s-1740KiB/s (428kB/s-1781kB/s), io=20.0MiB (20.0MB), run=2943-4899msec WRITE: bw=5853KiB/s (5993kB/s), 1236KiB/s-2436KiB/s (1265kB/s-2494kB/s), io=28.0MiB (29.4MB), run=2943-4899msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144884: Fri Sep 4 05:25:26 2026 read: IOPS=1, BW=1767KiB/s (1810kB/s)(7168KiB/4056msec) clat (msec): min=84, max=455, avg=249.83, stdev=172.68 lat (msec): min=84, max=455, avg=249.83, stdev=172.68 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 121], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 123], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 439], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 1984, max= 3878, per=69.31%, avg=2722.50, stdev=897.92, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1262KiB/s (1293kB/s)(5120KiB/4056msec); 0 zone resets clat (msec): min=298, max=586, avg=453.84, stdev=102.72 lat (msec): min=298, max=586, avg=453.94, stdev=102.72 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 443], 40.00th=[ 443], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 477], 80.00th=[ 477], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1961, max= 2031, per=36.34%, avg=1998.75, stdev=32.11, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=58.33%, 750=8.33% cpu : usr=0.10%, sys=3.58%, ctx=57, 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=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=144885: Fri Sep 4 05:25:26 2026 read: IOPS=0, BW=432KiB/s (443kB/s)(2048KiB/4739msec) clat (msec): min=465, max=606, avg=536.23, stdev=99.78 lat (msec): min=465, max=606, avg=536.23, stdev=99.78 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 609], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1984, max= 2039, per=51.21%, avg=2011.50, stdev=38.89, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2161KiB/s (2213kB/s)(10.0MiB/4739msec); 0 zone resets clat (msec): min=137, max=776, avg=357.54, stdev=221.22 lat (msec): min=137, max=776, avg=357.78, stdev=221.40 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 144], | 30.00th=[ 163], 40.00th=[ 186], 50.00th=[ 313], 60.00th=[ 342], | 70.00th=[ 363], 80.00th=[ 518], 90.00th=[ 634], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1961, max= 4096, per=54.54%, avg=2999.50, stdev=1106.26, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.33, samples=6 lat (msec) : 250=33.33%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=2.85%, ctx=74, 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=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=144887: Fri Sep 4 05:25:26 2026 read: IOPS=1, BW=1374KiB/s (1407kB/s)(6144KiB/4471msec) clat (msec): min=87, max=643, avg=230.98, stdev=206.84 lat (msec): min=87, max=643, avg=230.98, stdev=206.84 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 121], | 30.00th=[ 121], 40.00th=[ 155], 50.00th=[ 155], 60.00th=[ 165], | 70.00th=[ 218], 80.00th=[ 218], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 2019, max= 4079, per=64.61%, avg=2538.00, stdev=1027.35, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1374KiB/s (1407kB/s)(6144KiB/4471msec); 0 zone resets clat (msec): min=271, max=799, avg=486.03, stdev=224.35 lat (msec): min=271, max=799, avg=486.14, stdev=224.35 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 451], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1939, max= 2031, per=36.35%, avg=1999.20, stdev=38.16, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=3.42%, ctx=73, 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=144888: Fri Sep 4 05:25:26 2026 read: IOPS=0, BW=982KiB/s (1006kB/s)(5120KiB/5213msec) clat (msec): min=83, max=806, avg=327.50, stdev=295.51 lat (msec): min=83, max=806, avg=327.50, stdev=295.51 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 84], | 30.00th=[ 96], 40.00th=[ 96], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 4079, max= 4096, per=100.00%, avg=4087.50, stdev=12.02, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1375KiB/s (1408kB/s)(7168KiB/5213msec); 0 zone resets clat (msec): min=103, max=1063, avg=471.99, stdev=377.49 lat (msec): min=103, max=1063, avg=472.08, stdev=377.46 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 120], | 30.00th=[ 220], 40.00th=[ 220], 50.00th=[ 334], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 852], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 1984, max= 3923, per=48.11%, avg=2646.00, stdev=1106.16, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 750=8.33%, 1000=16.67% lat (msec) : 2000=8.33% cpu : usr=0.06%, sys=3.42%, ctx=152, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3929KiB/s (4023kB/s), 432KiB/s-1767KiB/s (443kB/s-1810kB/s), io=20.0MiB (20.0MB), run=4056-5213msec WRITE: bw=5500KiB/s (5632kB/s), 1262KiB/s-2161KiB/s (1293kB/s-2213kB/s), io=28.0MiB (29.4MB), run=4056-5213msec 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=144896: Fri Sep 4 05:25:38 2026 read: IOPS=1, BW=4551KiB/s (4660kB/s)(12.0MiB/2700msec) clat (msec): min=579, max=1029, avg=856.68, stdev=242.63 lat (msec): min=579, max=1029, avg=856.68, stdev=242.63 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 8062, max= 8143, per=100.00%, avg=8102.50, stdev=57.28, 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=13.41%, ctx=387, 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=144899: Fri Sep 4 05:25:38 2026 read: IOPS=0, BW=1241KiB/s (1271kB/s)(4096KiB/3301msec) clat (nsec): min=1093.2M, max=1093.2M, avg=1093208081.00, stdev= 0.00 lat (nsec): min=1093.2M, max=1093.2M, avg=1093210911.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1099], 5.00th=[ 1099], 10.00th=[ 1099], 20.00th=[ 1099], | 30.00th=[ 1099], 40.00th=[ 1099], 50.00th=[ 1099], 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= 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=2482KiB/s (2541kB/s)(8192KiB/3301msec); 0 zone resets clat (msec): min=641, max=1505, avg=1073.72, stdev=610.82 lat (msec): min=642, max=1506, avg=1074.15, stdev=611.05 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 1502], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8062, max= 8062, per=81.22%, 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%, 2000=66.67% cpu : usr=0.09%, sys=5.67%, ctx=212, 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=144901: Fri Sep 4 05:25:38 2026 write: IOPS=2, BW=8230KiB/s (8428kB/s)(12.0MiB/1493msec); 0 zone resets clat (msec): min=322, max=657, avg=467.58, stdev=171.71 lat (msec): min=323, max=657, avg=468.01, stdev=171.59 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 8175, max= 8175, per=82.36%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=7.57%, ctx=48, 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=144903: Fri Sep 4 05:25:38 2026 write: IOPS=1, BW=5639KiB/s (5775kB/s)(12.0MiB/2179msec); 0 zone resets clat (msec): min=269, max=1056, avg=702.00, stdev=399.15 lat (msec): min=270, max=1057, avg=702.42, stdev=399.22 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 1053], 80.00th=[ 1053], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 6104, max= 8192, per=72.01%, avg=7148.00, stdev=1476.44, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.05%, sys=4.91%, ctx=58, 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=4963KiB/s (5082kB/s), 1241KiB/s-4551KiB/s (1271kB/s-4660kB/s), io=16.0MiB (16.8MB), run=2700-3301msec WRITE: bw=9927KiB/s (10.2MB/s), 2482KiB/s-8230KiB/s (2541kB/s-8428kB/s), io=32.0MiB (33.6MB), run=1493-3301msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144897: Fri Sep 4 05:25:38 2026 read: IOPS=0, BW=3842KiB/s (3935kB/s)(12.0MiB/3198msec) clat (msec): min=433, max=1403, avg=1030.31, stdev=522.37 lat (msec): min=433, max=1403, avg=1030.31, stdev=522.37 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 435], 10.00th=[ 435], 20.00th=[ 435], | 30.00th=[ 435], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7953, max= 8094, per=100.00%, avg=8023.50, stdev=99.70, 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=0.03%, sys=4.25%, ctx=53, 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=144898: Fri Sep 4 05:25:38 2026 read: IOPS=0, BW=1018KiB/s (1043kB/s)(4096KiB/4022msec) clat (nsec): min=1486.7M, max=1486.7M, avg=1486710567.00, stdev= 0.00 lat (nsec): min=1486.7M, max=1486.7M, avg=1486713062.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1485], 5.00th=[ 1485], 10.00th=[ 1485], 20.00th=[ 1485], | 30.00th=[ 1485], 40.00th=[ 1485], 50.00th=[ 1485], 60.00th=[ 1485], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 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=2037KiB/s (2086kB/s)(8192KiB/4022msec); 0 zone resets clat (msec): min=708, max=1781, avg=1244.52, stdev=758.75 lat (msec): min=708, max=1781, avg=1244.87, stdev=758.77 clat percentiles (msec): | 1.00th=[ 709], 5.00th=[ 709], 10.00th=[ 709], 20.00th=[ 709], | 30.00th=[ 709], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 1787], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 8094, max= 8094, per=99.35%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.64%, ctx=45, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144900: Fri Sep 4 05:25:38 2026 write: IOPS=0, BW=3107KiB/s (3182kB/s)(12.0MiB/3955msec); 0 zone resets clat (msec): min=396, max=1755, avg=1289.53, stdev=773.93 lat (msec): min=399, max=1756, avg=1291.17, stdev=772.49 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 1720], 50.00th=[ 1720], 60.00th=[ 1720], | 70.00th=[ 1754], 80.00th=[ 1754], 90.00th=[ 1754], 95.00th=[ 1754], | 99.00th=[ 1754], 99.50th=[ 1754], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 8143, max= 8175, per=100.00%, avg=8159.00, stdev=22.63, 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=3.49%, ctx=46, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144902: Fri Sep 4 05:25:38 2026 write: IOPS=1, BW=4683KiB/s (4795kB/s)(12.0MiB/2624msec); 0 zone resets clat (msec): min=297, max=1402, avg=831.33, stdev=553.68 lat (msec): min=297, max=1403, avg=831.73, stdev=553.74 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8126, max= 8126, per=99.74%, 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%, 1000=33.33%, 2000=33.33% cpu : usr=0.15%, sys=7.09%, ctx=56, 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=4074KiB/s (4171kB/s), 1018KiB/s-3842KiB/s (1043kB/s-3935kB/s), io=16.0MiB (16.8MB), run=3198-4022msec WRITE: bw=8147KiB/s (8343kB/s), 2037KiB/s-4683KiB/s (2086kB/s-4795kB/s), io=32.0MiB (33.6MB), run=2624-4022msec