== sanity test 398b: DIO and buffer IO race ============== 05:41:30 (1787305290) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.66057 s, 8.9 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=178832: Fri Aug 21 05:43:50 2026 read: IOPS=12, BW=48.9KiB/s (50.0kB/s)(5992KiB/122644msec) clat (usec): min=48, max=221963, avg=44069.07, stdev=28800.18 lat (usec): min=49, max=221964, avg=44070.98, stdev=28800.58 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 11863], 10.00th=[ 16450], 20.00th=[ 22152], | 30.00th=[ 26608], 40.00th=[ 31851], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 52167], 80.00th=[ 62129], 90.00th=[ 80217], 95.00th=[ 99091], | 99.00th=[145753], 99.50th=[162530], 99.90th=[189793], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 7, max= 111, per=25.06%, avg=48.62, stdev=20.20, samples=240 iops : min= 1, max= 27, avg=11.50, stdev= 5.06, samples=240 write: IOPS=12, BW=51.3KiB/s (52.6kB/s)(6296KiB/122644msec); 0 zone resets clat (usec): min=973, max=869795, avg=35672.13, stdev=42334.49 lat (usec): min=975, max=869797, avg=35673.99, stdev=42334.47 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1418], 10.00th=[ 2057], 20.00th=[ 4293], | 30.00th=[ 8029], 40.00th=[ 16057], 50.00th=[ 25035], 60.00th=[ 33424], | 70.00th=[ 44303], 80.00th=[ 60031], 90.00th=[ 86508], 95.00th=[106431], | 99.00th=[166724], 99.50th=[185598], 99.90th=[248513], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 7, max= 166, per=24.96%, avg=50.67, stdev=23.46, samples=242 iops : min= 1, max= 41, avg=12.01, stdev= 5.93, samples=242 lat (usec) : 50=0.07%, 100=1.27%, 250=0.10%, 750=0.03%, 1000=0.07% lat (msec) : 2=5.01%, 4=4.92%, 10=7.75%, 20=11.56%, 50=40.01% lat (msec) : 100=23.54%, 250=5.66%, 1000=0.03% cpu : usr=0.09%, sys=5.89%, ctx=6765, 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=178833: Fri Aug 21 05:43:50 2026 read: IOPS=12, BW=48.4KiB/s (49.6kB/s)(5940KiB/122675msec) clat (usec): min=45, max=893542, avg=46582.44, stdev=37817.88 lat (usec): min=45, max=893543, avg=46586.63, stdev=37815.88 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 12780], 10.00th=[ 16450], 20.00th=[ 22676], | 30.00th=[ 27657], 40.00th=[ 33424], 50.00th=[ 39060], 60.00th=[ 46400], | 70.00th=[ 54264], 80.00th=[ 65799], 90.00th=[ 82314], 95.00th=[102237], | 99.00th=[164627], 99.50th=[187696], 99.90th=[265290], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 7, max= 103, per=24.73%, avg=47.98, stdev=18.58, samples=241 iops : min= 1, max= 25, avg=11.33, stdev= 4.67, samples=241 write: IOPS=12, BW=51.7KiB/s (52.0kB/s)(6348KiB/122675msec); 0 zone resets clat (usec): min=1033, max=279514, avg=33390.93, stdev=34882.80 lat (usec): min=1034, max=279516, avg=33398.70, stdev=34879.13 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1450], 10.00th=[ 2147], 20.00th=[ 4293], | 30.00th=[ 7701], 40.00th=[ 15401], 50.00th=[ 24249], 60.00th=[ 32637], | 70.00th=[ 43254], 80.00th=[ 54789], 90.00th=[ 78119], 95.00th=[101188], | 99.00th=[160433], 99.50th=[181404], 99.90th=[252707], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 134, per=25.29%, avg=51.33, stdev=24.61, samples=240 iops : min= 1, max= 33, avg=12.19, stdev= 6.20, samples=240 lat (usec) : 50=0.03%, 100=1.04%, 250=0.23%, 500=0.03%, 750=0.03% lat (msec) : 2=4.72%, 4=5.14%, 10=7.68%, 20=11.78%, 50=40.17% lat (msec) : 100=23.89%, 250=5.08%, 500=0.13%, 1000=0.03% cpu : usr=0.10%, sys=5.83%, ctx=6804, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178834: Fri Aug 21 05:43:50 2026 read: IOPS=12, BW=49.6KiB/s (50.8kB/s)(6028KiB/121504msec) clat (usec): min=38, max=257217, avg=44529.96, stdev=30772.80 lat (usec): min=38, max=257218, avg=44534.54, stdev=30771.05 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 8979], 10.00th=[ 14877], 20.00th=[ 21365], | 30.00th=[ 25822], 40.00th=[ 31327], 50.00th=[ 37487], 60.00th=[ 44303], | 70.00th=[ 53216], 80.00th=[ 64750], 90.00th=[ 84411], 95.00th=[105382], | 99.00th=[147850], 99.50th=[166724], 99.90th=[231736], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 7, max= 111, per=25.38%, avg=49.25, stdev=20.65, samples=239 iops : min= 1, max= 27, avg=11.64, stdev= 5.17, samples=239 write: IOPS=12, BW=51.5KiB/s (52.8kB/s)(6260KiB/121504msec); 0 zone resets clat (usec): min=1035, max=965191, avg=34410.05, stdev=42474.43 lat (usec): min=1037, max=965193, avg=34418.22, stdev=42486.06 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1549], 10.00th=[ 2376], 20.00th=[ 4490], | 30.00th=[ 8094], 40.00th=[ 16450], 50.00th=[ 23987], 60.00th=[ 32375], | 70.00th=[ 42206], 80.00th=[ 55837], 90.00th=[ 81265], 95.00th=[103285], | 99.00th=[160433], 99.50th=[191890], 99.90th=[278922], 99.95th=[968885], | 99.99th=[968885] bw ( KiB/s): min= 7, max= 143, per=25.30%, avg=51.36, stdev=24.06, samples=238 iops : min= 1, max= 35, avg=12.18, stdev= 6.05, samples=238 lat (usec) : 50=0.03%, 100=1.69%, 250=0.23%, 500=0.07% lat (msec) : 2=4.26%, 4=5.05%, 10=8.30%, 20=11.59%, 50=40.72% lat (msec) : 100=22.17%, 250=5.79%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=5.92%, ctx=6746, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178835: Fri Aug 21 05:43:50 2026 read: IOPS=12, BW=49.1KiB/s (50.3kB/s)(6052KiB/123250msec) clat (usec): min=38, max=290771, avg=44878.94, stdev=31816.02 lat (usec): min=38, max=290771, avg=44883.06, stdev=31818.88 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 9241], 10.00th=[ 15795], 20.00th=[ 21365], | 30.00th=[ 26608], 40.00th=[ 32637], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 52691], 80.00th=[ 64226], 90.00th=[ 82314], 95.00th=[101188], | 99.00th=[158335], 99.50th=[181404], 99.90th=[261096], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 7, max= 127, per=25.13%, avg=48.76, stdev=21.09, samples=241 iops : min= 1, max= 31, avg=11.53, stdev= 5.30, samples=241 write: IOPS=12, BW=50.6KiB/s (51.8kB/s)(6236KiB/123250msec); 0 zone resets clat (usec): min=1045, max=951814, avg=35147.79, stdev=42589.19 lat (usec): min=1046, max=951814, avg=35150.55, stdev=42589.20 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1418], 10.00th=[ 2147], 20.00th=[ 4228], | 30.00th=[ 7635], 40.00th=[ 15401], 50.00th=[ 24249], 60.00th=[ 33817], | 70.00th=[ 43779], 80.00th=[ 59507], 90.00th=[ 83362], 95.00th=[104334], | 99.00th=[164627], 99.50th=[187696], 99.90th=[223347], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 7, max= 180, per=24.55%, avg=49.84, stdev=24.27, samples=243 iops : min= 1, max= 45, avg=11.81, stdev= 6.14, samples=243 lat (usec) : 50=0.10%, 100=1.73%, 250=0.26%, 500=0.13%, 750=0.07% lat (msec) : 2=4.72%, 4=4.88%, 10=7.88%, 20=11.62%, 50=39.26% lat (msec) : 100=23.76%, 250=5.50%, 500=0.07%, 1000=0.03% cpu : usr=0.10%, sys=5.81%, ctx=6880, 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=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=195KiB/s (199kB/s), 48.4KiB/s-49.6KiB/s (49.6kB/s-50.8kB/s), io=23.4MiB (24.6MB), run=121504-123250msec WRITE: bw=204KiB/s (209kB/s), 50.6KiB/s-51.7KiB/s (51.8kB/s-52.0kB/s), io=24.6MiB (25.7MB), run=121504-123250msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178837: Fri Aug 21 05:44:28 2026 read: IOPS=9, BW=37.3KiB/s (38.2kB/s)(5992KiB/160468msec) clat (msec): min=5, max=982, avg=42.01, stdev=44.63 lat (msec): min=5, max=982, avg=42.01, stdev=44.63 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 59], 90.00th=[ 90], 95.00th=[ 121], | 99.00th=[ 188], 99.50th=[ 213], 99.90th=[ 418], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 134, per=25.62%, avg=37.92, stdev=25.36, samples=307 iops : min= 1, max= 33, avg= 8.80, stdev= 6.38, samples=307 write: IOPS=9, BW=39.2KiB/s (40.2kB/s)(6296KiB/160468msec); 0 zone resets clat (msec): min=13, max=368, avg=61.83, stdev=45.34 lat (msec): min=13, max=368, avg=61.83, stdev=45.33 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 48], 60.00th=[ 58], | 70.00th=[ 72], 80.00th=[ 90], 90.00th=[ 121], 95.00th=[ 148], | 99.00th=[ 234], 99.50th=[ 262], 99.90th=[ 355], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7, max= 127, per=25.39%, avg=39.36, stdev=24.28, samples=311 iops : min= 1, max= 31, avg= 9.15, stdev= 6.11, samples=311 lat (msec) : 10=2.28%, 20=15.79%, 50=45.44%, 100=24.58%, 250=11.49% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.06%, sys=2.04%, ctx=4889, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178838: Fri Aug 21 05:44:28 2026 read: IOPS=9, BW=36.8KiB/s (37.7kB/s)(5940KiB/161340msec) clat (msec): min=5, max=931, avg=41.97, stdev=43.58 lat (msec): min=5, max=931, avg=41.97, stdev=43.58 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 45], 80.00th=[ 62], 90.00th=[ 91], 95.00th=[ 117], | 99.00th=[ 180], 99.50th=[ 201], 99.90th=[ 342], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 151, per=25.16%, avg=37.24, stdev=25.87, samples=310 iops : min= 1, max= 37, avg= 8.63, stdev= 6.51, samples=310 write: IOPS=9, BW=39.3KiB/s (40.3kB/s)(6348KiB/161340msec); 0 zone resets clat (msec): min=10, max=418, avg=62.27, stdev=45.73 lat (msec): min=10, max=418, avg=62.27, stdev=45.73 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 59], | 70.00th=[ 71], 80.00th=[ 91], 90.00th=[ 121], 95.00th=[ 153], | 99.00th=[ 218], 99.50th=[ 249], 99.90th=[ 363], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7, max= 127, per=25.43%, avg=39.42, stdev=23.74, samples=313 iops : min= 1, max= 31, avg= 9.18, stdev= 5.98, samples=313 lat (msec) : 10=2.47%, 20=15.72%, 50=44.79%, 100=25.07%, 250=11.56% lat (msec) : 500=0.36%, 1000=0.03% cpu : usr=0.07%, sys=1.97%, ctx=4895, 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=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=178839: Fri Aug 21 05:44:28 2026 read: IOPS=9, BW=37.6KiB/s (38.5kB/s)(6028KiB/160312msec) clat (msec): min=4, max=274, avg=43.24, stdev=38.75 lat (msec): min=4, max=274, avg=43.25, stdev=38.75 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 46], 80.00th=[ 64], 90.00th=[ 103], 95.00th=[ 127], | 99.00th=[ 182], 99.50th=[ 211], 99.90th=[ 243], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 7, max= 135, per=25.59%, avg=37.87, stdev=24.99, samples=310 iops : min= 1, max= 33, avg= 8.78, stdev= 6.28, samples=310 write: IOPS=9, BW=39.0KiB/s (39.0kB/s)(6260KiB/160312msec); 0 zone resets clat (msec): min=9, max=1017, avg=60.70, stdev=49.12 lat (msec): min=9, max=1017, avg=60.70, stdev=49.12 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 89], 90.00th=[ 115], 95.00th=[ 148], | 99.00th=[ 213], 99.50th=[ 249], 99.90th=[ 321], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 127, per=25.45%, avg=39.45, stdev=24.68, samples=309 iops : min= 1, max= 31, avg= 9.18, stdev= 6.21, samples=309 lat (msec) : 10=2.51%, 20=15.95%, 50=44.66%, 100=24.02%, 250=12.60% lat (msec) : 500=0.23%, 2000=0.03% cpu : usr=0.08%, sys=1.97%, ctx=4813, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178840: Fri Aug 21 05:44:28 2026 read: IOPS=9, BW=37.5KiB/s (38.4kB/s)(6052KiB/161380msec) clat (msec): min=5, max=416, avg=42.30, stdev=40.40 lat (msec): min=5, max=416, avg=42.31, stdev=40.40 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 44], 80.00th=[ 62], 90.00th=[ 92], 95.00th=[ 127], | 99.00th=[ 197], 99.50th=[ 213], 99.90th=[ 317], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7, max= 135, per=25.98%, avg=38.45, stdev=26.20, samples=306 iops : min= 1, max= 33, avg= 8.93, stdev= 6.58, samples=306 write: IOPS=9, BW=38.6KiB/s (39.6kB/s)(6236KiB/161380msec); 0 zone resets clat (msec): min=9, max=975, avg=62.36, stdev=51.40 lat (msec): min=9, max=975, avg=62.36, stdev=51.40 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 72], 80.00th=[ 89], 90.00th=[ 123], 95.00th=[ 148], | 99.00th=[ 230], 99.50th=[ 275], 99.90th=[ 430], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 118, per=24.88%, avg=38.56, stdev=23.97, samples=314 iops : min= 1, max= 29, avg= 8.96, stdev= 6.05, samples=314 lat (msec) : 10=2.86%, 20=16.28%, 50=44.73%, 100=24.38%, 250=11.23% lat (msec) : 500=0.49%, 1000=0.03% cpu : usr=0.07%, sys=1.97%, ctx=4863, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=149KiB/s (152kB/s), 36.8KiB/s-37.6KiB/s (37.7kB/s-38.5kB/s), io=23.4MiB (24.6MB), run=160312-161380msec WRITE: bw=156KiB/s (160kB/s), 38.6KiB/s-39.3KiB/s (39.6kB/s-40.3kB/s), io=24.6MiB (25.7MB), run=160312-161380msec 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=178875: Fri Aug 21 05:44:59 2026 read: IOPS=17, BW=274KiB/s (280kB/s)(5920KiB/21633msec) clat (usec): min=51, max=141164, avg=30561.52, stdev=19891.39 lat (usec): min=51, max=141166, avg=30565.17, stdev=19894.68 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 103], 10.00th=[ 11338], 20.00th=[ 15926], | 30.00th=[ 20579], 40.00th=[ 24511], 50.00th=[ 28181], 60.00th=[ 32375], | 70.00th=[ 36439], 80.00th=[ 41681], 90.00th=[ 52691], 95.00th=[ 69731], | 99.00th=[102237], 99.50th=[124257], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 95, max= 542, per=24.23%, avg=267.48, stdev=78.30, samples=42 iops : min= 5, max= 33, avg=15.93, stdev= 4.88, samples=42 write: IOPS=18, BW=294KiB/s (301kB/s)(6368KiB/21633msec); 0 zone resets clat (usec): min=1563, max=134262, avg=25660.09, stdev=21587.45 lat (usec): min=1565, max=134265, avg=25662.46, stdev=21587.45 clat percentiles (usec): | 1.00th=[ 1975], 5.00th=[ 2868], 10.00th=[ 3752], 20.00th=[ 5997], | 30.00th=[ 9765], 40.00th=[ 15926], 50.00th=[ 21627], 60.00th=[ 26084], | 70.00th=[ 33162], 80.00th=[ 40633], 90.00th=[ 55837], 95.00th=[ 65799], | 99.00th=[ 99091], 99.50th=[122160], 99.90th=[135267], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 95, max= 542, per=25.16%, avg=292.07, stdev=96.90, samples=42 iops : min= 5, max= 33, avg=17.45, stdev= 6.06, samples=42 lat (usec) : 100=2.08%, 250=1.69%, 500=0.39% lat (msec) : 2=0.52%, 4=5.99%, 10=9.77%, 20=17.71%, 50=48.83% lat (msec) : 100=12.11%, 250=0.91% cpu : usr=0.10%, sys=11.44%, ctx=2062, 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=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=178876: Fri Aug 21 05:44:59 2026 read: IOPS=16, BW=267KiB/s (274kB/s)(5744KiB/21477msec) clat (usec): min=55, max=125865, avg=30822.71, stdev=17699.19 lat (usec): min=56, max=125866, avg=30823.98, stdev=17699.24 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 119], 10.00th=[ 13566], 20.00th=[ 18482], | 30.00th=[ 21365], 40.00th=[ 24511], 50.00th=[ 28443], 60.00th=[ 32113], | 70.00th=[ 36439], 80.00th=[ 41681], 90.00th=[ 52167], 95.00th=[ 63701], | 99.00th=[ 89654], 99.50th=[104334], 99.90th=[126354], 99.95th=[126354], | 99.99th=[126354] bw ( KiB/s): min= 83, max= 446, per=24.10%, avg=266.10, stdev=83.87, samples=42 iops : min= 5, max= 27, avg=15.83, stdev= 5.23, samples=42 write: IOPS=19, BW=305KiB/s (312kB/s)(6544KiB/21477msec); 0 zone resets clat (usec): min=1597, max=115347, avg=25201.92, stdev=20903.11 lat (usec): min=1599, max=115349, avg=25204.27, stdev=20903.13 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 6], | 30.00th=[ 10], 40.00th=[ 16], 50.00th=[ 21], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 41], 90.00th=[ 53], 95.00th=[ 66], | 99.00th=[ 94], 99.50th=[ 96], 99.90th=[ 116], 99.95th=[ 116], | 99.99th=[ 116] bw ( KiB/s): min= 63, max= 477, per=26.12%, avg=303.24, stdev=89.41, samples=42 iops : min= 3, max= 29, avg=18.17, stdev= 5.59, samples=42 lat (usec) : 100=1.82%, 250=1.04%, 1000=0.13% lat (msec) : 2=0.52%, 4=5.34%, 10=11.07%, 20=18.10%, 50=50.52% lat (msec) : 100=10.94%, 250=0.52% cpu : usr=0.15%, sys=11.70%, ctx=2055, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178877: Fri Aug 21 05:44:59 2026 read: IOPS=18, BW=288KiB/s (295kB/s)(6256KiB/21692msec) clat (usec): min=51, max=103229, avg=31310.69, stdev=18223.85 lat (usec): min=51, max=103230, avg=31316.34, stdev=18216.62 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 131], 10.00th=[ 13960], 20.00th=[ 18482], | 30.00th=[ 21890], 40.00th=[ 24773], 50.00th=[ 28181], 60.00th=[ 32900], | 70.00th=[ 36963], 80.00th=[ 42206], 90.00th=[ 54264], 95.00th=[ 66323], | 99.00th=[ 88605], 99.50th=[103285], 99.90th=[103285], 99.95th=[103285], | 99.99th=[103285] bw ( KiB/s): min= 126, max= 447, per=26.10%, avg=288.19, stdev=80.31, samples=42 iops : min= 7, max= 27, avg=17.21, stdev= 5.00, samples=42 write: IOPS=17, BW=278KiB/s (285kB/s)(6032KiB/21692msec); 0 zone resets clat (usec): min=1232, max=111516, avg=24866.14, stdev=21357.63 lat (usec): min=1233, max=111518, avg=24872.74, stdev=21356.45 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2802], 10.00th=[ 3589], 20.00th=[ 5080], | 30.00th=[ 7963], 40.00th=[ 15008], 50.00th=[ 19792], 60.00th=[ 26084], | 70.00th=[ 30802], 80.00th=[ 41157], 90.00th=[ 54264], 95.00th=[ 70779], | 99.00th=[ 91751], 99.50th=[ 99091], 99.90th=[111674], 99.95th=[111674], | 99.99th=[111674] bw ( KiB/s): min= 95, max= 477, per=23.57%, avg=273.62, stdev=89.14, samples=42 iops : min= 5, max= 29, avg=16.31, stdev= 5.61, samples=42 lat (usec) : 100=1.95%, 250=0.78%, 500=0.13%, 1000=0.13% lat (msec) : 2=1.43%, 4=5.86%, 10=9.64%, 20=17.97%, 50=48.44% lat (msec) : 100=13.28%, 250=0.39% cpu : usr=0.16%, sys=11.60%, ctx=2066, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178878: Fri Aug 21 05:44:59 2026 read: IOPS=17, BW=283KiB/s (289kB/s)(6032KiB/21340msec) clat (usec): min=60, max=135977, avg=29950.79, stdev=19816.63 lat (usec): min=62, max=135979, avg=29952.14, stdev=19816.66 clat percentiles (usec): | 1.00th=[ 65], 5.00th=[ 105], 10.00th=[ 289], 20.00th=[ 16188], | 30.00th=[ 19530], 40.00th=[ 22938], 50.00th=[ 26346], 60.00th=[ 31589], | 70.00th=[ 38536], 80.00th=[ 43779], 90.00th=[ 54264], 95.00th=[ 62653], | 99.00th=[ 96994], 99.50th=[120062], 99.90th=[135267], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 95, max= 445, per=25.53%, avg=281.86, stdev=80.54, samples=42 iops : min= 5, max= 27, avg=16.81, stdev= 5.09, samples=42 write: IOPS=18, BW=293KiB/s (300kB/s)(6256KiB/21340msec); 0 zone resets clat (usec): min=1734, max=141525, avg=25214.51, stdev=22666.68 lat (usec): min=1736, max=141527, avg=25217.81, stdev=22667.67 clat percentiles (usec): | 1.00th=[ 1909], 5.00th=[ 3294], 10.00th=[ 4359], 20.00th=[ 5932], | 30.00th=[ 8160], 40.00th=[ 13829], 50.00th=[ 19006], 60.00th=[ 23725], | 70.00th=[ 32113], 80.00th=[ 43254], 90.00th=[ 56886], 95.00th=[ 67634], | 99.00th=[112722], 99.50th=[123208], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 127, max= 510, per=25.37%, avg=294.52, stdev=95.12, samples=42 iops : min= 7, max= 31, avg=17.62, stdev= 5.92, samples=42 lat (usec) : 100=2.08%, 250=2.73%, 500=0.13%, 750=0.13%, 1000=0.13% lat (msec) : 2=0.65%, 4=3.78%, 10=14.06%, 20=17.97%, 50=45.96% lat (msec) : 100=11.46%, 250=0.91% cpu : usr=0.11%, sys=11.41%, ctx=1927, 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=1104KiB/s (1131kB/s), 267KiB/s-288KiB/s (274kB/s-295kB/s), io=23.4MiB (24.5MB), run=21340-21692msec WRITE: bw=1162KiB/s (1190kB/s), 278KiB/s-305KiB/s (285kB/s-312kB/s), io=24.6MiB (25.8MB), run=21340-21692msec fio: pid=178880, err=5/file:backend.c:481, func=full resid, error=Input/output error fio: pid=178882, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=178879: Fri Aug 21 05:45:07 2026 read: IOPS=12, BW=201KiB/s (206kB/s)(5920KiB/29492msec) clat (msec): min=7, max=121, avg=32.53, stdev=22.76 lat (msec): min=7, max=121, avg=32.53, stdev=22.76 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 33], 80.00th=[ 41], 90.00th=[ 71], 95.00th=[ 83], | 99.00th=[ 112], 99.50th=[ 115], 99.90th=[ 122], 99.95th=[ 122], | 99.99th=[ 122] bw ( KiB/s): min= 31, max= 480, per=27.47%, avg=196.97, stdev=103.33, samples=58 iops : min= 1, max= 30, avg=11.57, stdev= 6.49, samples=58 write: IOPS=13, BW=216KiB/s (221kB/s)(6368KiB/29492msec); 0 zone resets clat (msec): min=8, max=152, avg=43.39, stdev=28.16 lat (msec): min=8, max=152, avg=43.39, stdev=28.16 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 52], 80.00th=[ 63], 90.00th=[ 87], 95.00th=[ 106], | 99.00th=[ 142], 99.50th=[ 150], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 31, max= 447, per=28.60%, avg=214.22, stdev=102.59, samples=58 iops : min= 1, max= 27, avg=12.66, stdev= 6.41, samples=58 lat (msec) : 10=1.95%, 20=21.09%, 50=52.73%, 100=20.31%, 250=3.91% cpu : usr=0.08%, sys=3.69%, ctx=1348, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=178880: Fri Aug 21 05:45:07 2026 read: IOPS=10, BW=170KiB/s (174kB/s)(4016KiB/23625msec) clat (msec): min=10, max=156, avg=36.13, stdev=24.24 lat (msec): min=10, max=156, avg=36.14, stdev=24.24 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 53], 90.00th=[ 78], 95.00th=[ 86], | 99.00th=[ 109], 99.50th=[ 121], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 31, max= 350, per=23.29%, avg=166.96, stdev=75.75, samples=46 iops : min= 1, max= 21, avg= 9.70, stdev= 4.66, samples=46 write: IOPS=11, BW=189KiB/s (193kB/s)(4464KiB/23625msec); 0 zone resets clat (msec): min=13, max=232, avg=51.53, stdev=28.97 lat (msec): min=13, max=232, avg=51.54, stdev=28.97 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 47], 60.00th=[ 53], | 70.00th=[ 61], 80.00th=[ 71], 90.00th=[ 92], 95.00th=[ 108], | 99.00th=[ 153], 99.50th=[ 171], 99.90th=[ 232], 99.95th=[ 232], | 99.99th=[ 232] bw ( KiB/s): min= 63, max= 383, per=24.81%, avg=185.83, stdev=66.01, samples=46 iops : min= 3, max= 23, avg=10.87, stdev= 4.13, samples=46 lat (msec) : 20=15.25%, 50=51.60%, 100=28.25%, 250=4.71% cpu : usr=0.07%, sys=3.53%, ctx=810, 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=252,279,0,0 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=178881: Fri Aug 21 05:45:07 2026 read: IOPS=13, BW=213KiB/s (218kB/s)(6256KiB/29322msec) clat (msec): min=6, max=150, avg=32.78, stdev=24.64 lat (msec): min=6, max=150, avg=32.78, stdev=24.64 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 48], 90.00th=[ 68], 95.00th=[ 85], | 99.00th=[ 124], 99.50th=[ 140], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 32, max= 604, per=29.78%, avg=213.53, stdev=123.46, samples=58 iops : min= 2, max= 37, avg=12.60, stdev= 7.72, samples=58 write: IOPS=12, BW=206KiB/s (211kB/s)(6032KiB/29322msec); 0 zone resets clat (msec): min=10, max=183, avg=43.56, stdev=30.13 lat (msec): min=10, max=183, avg=43.56, stdev=30.13 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 19], 20.00th=[ 22], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 48], 80.00th=[ 64], 90.00th=[ 89], 95.00th=[ 110], | 99.00th=[ 157], 99.50th=[ 169], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 63, max= 416, per=27.27%, avg=204.22, stdev=100.12, samples=58 iops : min= 3, max= 26, avg=12.02, stdev= 6.27, samples=58 lat (msec) : 10=3.12%, 20=23.44%, 50=50.13%, 100=18.88%, 250=4.43% cpu : usr=0.08%, sys=3.78%, ctx=1352, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=178882: Fri Aug 21 05:45:07 2026 read: IOPS=11, BW=187KiB/s (192kB/s)(4960KiB/26509msec) clat (msec): min=7, max=190, avg=36.18, stdev=26.55 lat (msec): min=7, max=190, avg=36.18, stdev=26.55 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 51], 90.00th=[ 78], 95.00th=[ 87], | 99.00th=[ 124], 99.50th=[ 153], 99.90th=[ 190], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 31, max= 448, per=25.78%, avg=184.87, stdev=93.39, samples=52 iops : min= 1, max= 28, avg=10.83, stdev= 5.94, samples=52 write: IOPS=12, BW=198KiB/s (203kB/s)(5248KiB/26509msec); 0 zone resets clat (msec): min=13, max=233, avg=45.88, stdev=28.76 lat (msec): min=13, max=233, avg=45.89, stdev=28.77 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 18], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 46], | 70.00th=[ 54], 80.00th=[ 65], 90.00th=[ 82], 95.00th=[ 101], | 99.00th=[ 150], 99.50th=[ 184], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 63, max= 632, per=26.32%, avg=197.13, stdev=101.37, samples=52 iops : min= 3, max= 39, avg=11.60, stdev= 6.36, samples=52 lat (msec) : 10=1.41%, 20=18.47%, 50=52.58%, 100=23.00%, 250=4.38% cpu : usr=0.08%, sys=3.59%, ctx=1081, majf=0, minf=19 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=311,328,0,0 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=717KiB/s (734kB/s), 170KiB/s-213KiB/s (174kB/s-218kB/s), io=20.7MiB (21.7MB), run=23625-29492msec WRITE: bw=750KiB/s (768kB/s), 189KiB/s-216KiB/s (193kB/s-221kB/s), io=21.6MiB (22.6MB), run=23625-29492msec 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=178897: Fri Aug 21 05:45:20 2026 read: IOPS=1, BW=1894KiB/s (1939kB/s)(7168KiB/3785msec) clat (usec): min=633, max=345243, avg=222606.04, stdev=107320.94 lat (usec): min=634, max=345244, avg=222607.63, stdev=107321.00 clat percentiles (usec): | 1.00th=[ 635], 5.00th=[ 635], 10.00th=[ 635], 20.00th=[214959], | 30.00th=[225444], 40.00th=[225444], 50.00th=[235930], 60.00th=[252707], | 70.00th=[252707], 80.00th=[283116], 90.00th=[346031], 95.00th=[346031], | 99.00th=[346031], 99.50th=[346031], 99.90th=[346031], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 2007, max= 2698, per=47.17%, avg=2164.60, stdev=298.57, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 write: IOPS=1, BW=1353KiB/s (1385kB/s)(5120KiB/3785msec); 0 zone resets clat (msec): min=184, max=717, avg=409.16, stdev=204.61 lat (msec): min=184, max=717, avg=409.24, stdev=204.62 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 2039, max= 4087, per=42.41%, avg=2724.67, stdev=1179.82, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=33.33%, 500=50.00%, 750=8.33% cpu : usr=0.03%, sys=25.79%, ctx=335, 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=178898: Fri Aug 21 05:45:20 2026 read: IOPS=0, BW=459KiB/s (470kB/s)(2048KiB/4462msec) clat (msec): min=156, max=288, avg=222.56, stdev=93.90 lat (msec): min=156, max=288, avg=222.56, stdev=93.90 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 157], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 288], 95.00th=[ 288], | 99.00th=[ 288], 99.50th=[ 288], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 1331, max= 2043, per=36.76%, avg=1687.00, stdev=503.46, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2295KiB/s (2350kB/s)(10.0MiB/4462msec); 0 zone resets clat (msec): min=199, max=845, avg=395.84, stdev=193.76 lat (msec): min=199, max=846, avg=395.95, stdev=193.77 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 222], | 30.00th=[ 222], 40.00th=[ 321], 50.00th=[ 326], 60.00th=[ 397], | 70.00th=[ 443], 80.00th=[ 451], 90.00th=[ 535], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 2031, max= 4096, per=47.51%, avg=3052.67, stdev=1110.42, samples=6 iops : min= 1, max= 4, avg= 2.33, stdev= 1.21, samples=6 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.02%, sys=25.69%, ctx=322, 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=178899: Fri Aug 21 05:45:20 2026 read: IOPS=1, BW=1670KiB/s (1711kB/s)(6144KiB/3678msec) clat (usec): min=567, max=336969, avg=148874.26, stdev=146843.92 lat (usec): min=569, max=336970, avg=148875.77, stdev=146843.82 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 742], | 30.00th=[ 742], 40.00th=[ 60031], 50.00th=[ 60031], 60.00th=[223347], | 70.00th=[270533], 80.00th=[270533], 90.00th=[337642], 95.00th=[337642], | 99.00th=[337642], 99.50th=[337642], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 2007, max= 4079, per=59.05%, avg=2709.67, stdev=1186.01, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1670KiB/s (1711kB/s)(6144KiB/3678msec); 0 zone resets clat (msec): min=199, max=1050, avg=411.83, stdev=323.08 lat (msec): min=199, max=1051, avg=411.95, stdev=323.14 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 284], | 70.00th=[ 430], 80.00th=[ 430], 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= 1317, max= 2043, per=28.79%, avg=1849.50, stdev=355.32, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=16.67% lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 2000=8.33% cpu : usr=0.00%, sys=25.02%, ctx=350, 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=178900: Fri Aug 21 05:45:20 2026 read: IOPS=1, BW=1423KiB/s (1458kB/s)(5120KiB/3597msec) clat (usec): min=932, max=332769, avg=127551.18, stdev=173214.27 lat (usec): min=934, max=332770, avg=127552.57, stdev=173214.22 clat percentiles (usec): | 1.00th=[ 930], 5.00th=[ 930], 10.00th=[ 930], 20.00th=[ 930], | 30.00th=[ 963], 40.00th=[ 963], 50.00th=[ 2057], 60.00th=[ 2057], | 70.00th=[299893], 80.00th=[299893], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 2043, max= 6119, per=88.93%, avg=4081.00, stdev=2882.17, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1993KiB/s (2041kB/s)(7168KiB/3597msec); 0 zone resets clat (msec): min=146, max=833, avg=391.20, stdev=236.36 lat (msec): min=146, max=833, avg=391.27, stdev=236.36 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 224], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 351], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 535], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 1367, max= 4015, per=36.78%, avg=2363.00, stdev=1145.47, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 1000=16.67% lat (msec) : 4=8.33%, 250=25.00%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=26.45%, ctx=285, 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=4590KiB/s (4700kB/s), 459KiB/s-1894KiB/s (470kB/s-1939kB/s), io=20.0MiB (20.0MB), run=3597-4462msec WRITE: bw=6426KiB/s (6580kB/s), 1353KiB/s-2295KiB/s (1385kB/s-2350kB/s), io=28.0MiB (29.4MB), run=3597-4462msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178893: Fri Aug 21 05:45:20 2026 read: IOPS=1, BW=1948KiB/s (1995kB/s)(7168KiB/3680msec) clat (msec): min=105, max=402, avg=221.84, stdev=109.37 lat (msec): min=105, max=402, avg=221.84, stdev=109.37 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 125], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 188], 60.00th=[ 236], | 70.00th=[ 236], 80.00th=[ 330], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 1910, max= 4079, per=58.46%, avg=2406.20, stdev=936.38, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1391KiB/s (1425kB/s)(5120KiB/3680msec); 0 zone resets clat (msec): min=158, max=806, avg=393.14, stdev=252.80 lat (msec): min=158, max=806, avg=393.27, stdev=252.78 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 257], 40.00th=[ 257], 50.00th=[ 300], 60.00th=[ 300], | 70.00th=[ 443], 80.00th=[ 443], 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= 1910, max= 4055, per=43.55%, avg=2509.75, stdev=1031.92, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=41.67%, 1000=8.33% cpu : usr=0.00%, sys=6.52%, ctx=77, 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=178894: Fri Aug 21 05:45:20 2026 read: IOPS=0, BW=433KiB/s (443kB/s)(2048KiB/4732msec) clat (msec): min=106, max=172, avg=139.64, stdev=46.49 lat (msec): min=106, max=172, avg=139.64, stdev=46.49 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 107], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 107], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 174], 90.00th=[ 174], 95.00th=[ 174], | 99.00th=[ 174], 99.50th=[ 174], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 2043, max= 2048, per=49.70%, avg=2045.50, stdev= 3.54, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2164KiB/s (2216kB/s)(10.0MiB/4732msec); 0 zone resets clat (msec): min=51, max=1082, avg=427.95, stdev=342.97 lat (msec): min=52, max=1082, avg=428.04, stdev=342.95 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 53], 10.00th=[ 53], 20.00th=[ 161], | 30.00th=[ 176], 40.00th=[ 186], 50.00th=[ 275], 60.00th=[ 296], | 70.00th=[ 567], 80.00th=[ 617], 90.00th=[ 877], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 2003, max= 6107, per=47.01%, avg=2709.00, stdev=1664.74, samples=6 iops : min= 1, max= 5, avg= 1.67, stdev= 1.63, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=13.02%, ctx=161, 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=178895: Fri Aug 21 05:45:20 2026 read: IOPS=1, BW=1356KiB/s (1388kB/s)(6144KiB/4532msec) clat (msec): min=105, max=714, avg=334.83, stdev=230.63 lat (msec): min=105, max=714, avg=334.83, stdev=230.63 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 351], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1910, max= 2043, per=48.49%, avg=1995.75, stdev=59.48, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1356KiB/s (1388kB/s)(6144KiB/4532msec); 0 zone resets clat (msec): min=213, max=792, avg=411.61, stdev=205.50 lat (msec): min=213, max=792, avg=411.71, stdev=205.50 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 414], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 2003, max= 2043, per=35.23%, avg=2030.20, stdev=17.30, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=7.55%, ctx=118, 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=178896: Fri Aug 21 05:45:20 2026 read: IOPS=1, BW=1029KiB/s (1054kB/s)(5120KiB/4975msec) clat (msec): min=43, max=868, avg=310.88, stdev=341.93 lat (msec): min=43, max=868, avg=310.88, stdev=341.93 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 44], 10.00th=[ 44], 20.00th=[ 44], | 30.00th=[ 102], 40.00th=[ 102], 50.00th=[ 132], 60.00th=[ 132], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 1992, max= 4096, per=65.75%, avg=2706.33, stdev=1203.64, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1441KiB/s (1475kB/s)(7168KiB/4975msec); 0 zone resets clat (msec): min=53, max=1033, avg=448.94, stdev=400.24 lat (msec): min=53, max=1033, avg=449.03, stdev=400.24 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 105], | 30.00th=[ 127], 40.00th=[ 127], 50.00th=[ 388], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 936], 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= 1414, max= 2031, per=32.61%, avg=1879.20, stdev=263.06, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=16.67%, 750=8.33% lat (msec) : 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=8.10%, ctx=161, 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=4117KiB/s (4215kB/s), 433KiB/s-1948KiB/s (443kB/s-1995kB/s), io=20.0MiB (20.0MB), run=3680-4975msec WRITE: bw=5763KiB/s (5902kB/s), 1356KiB/s-2164KiB/s (1388kB/s-2216kB/s), io=28.0MiB (29.4MB), run=3680-4975msec 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=178907: Fri Aug 21 05:45:32 2026 read: IOPS=1, BW=5761KiB/s (5899kB/s)(12.0MiB/2133msec) clat (msec): min=518, max=753, avg=664.67, stdev=127.74 lat (msec): min=518, max=753, avg=664.67, stdev=127.74 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 751], 80.00th=[ 751], 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= 8110, max= 8159, per=100.00%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=18.76%, ctx=269, 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=178908: Fri Aug 21 05:45:32 2026 read: IOPS=0, BW=1723KiB/s (1765kB/s)(4096KiB/2377msec) clat (nsec): min=622316k, max=622316k, avg=622316032.00, stdev= 0.00 lat (nsec): min=622319k, max=622319k, avg=622318836.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3446KiB/s (3529kB/s)(8192KiB/2377msec); 0 zone resets clat (msec): min=573, max=1115, avg=844.38, stdev=383.03 lat (msec): min=573, max=1116, avg=845.31, stdev=383.81 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=[ 1116], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 8110, max= 8110, per=73.29%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=8.42%, ctx=164, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178909: Fri Aug 21 05:45:32 2026 write: IOPS=1, BW=4150KiB/s (4250kB/s)(12.0MiB/2961msec); 0 zone resets clat (msec): min=377, max=1292, avg=952.11, stdev=500.72 lat (msec): min=377, max=1294, avg=952.72, stdev=501.02 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 8110, max= 8110, per=73.29%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.30%, ctx=53, 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=178911: Fri Aug 21 05:45:32 2026 write: IOPS=1, BW=4271KiB/s (4374kB/s)(12.0MiB/2877msec); 0 zone resets clat (msec): min=275, max=1642, avg=897.16, stdev=691.95 lat (msec): min=279, max=1642, avg=898.83, stdev=690.30 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8110, max= 8126, per=73.36%, avg=8118.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.43%, ctx=102, 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=6893KiB/s (7058kB/s), 1723KiB/s-5761KiB/s (1765kB/s-5899kB/s), io=16.0MiB (16.8MB), run=2133-2377msec WRITE: bw=10.8MiB/s (11.3MB/s), 3446KiB/s-4271KiB/s (3529kB/s-4374kB/s), io=32.0MiB (33.6MB), run=2377-2961msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178910: Fri Aug 21 05:45:33 2026 read: IOPS=1, BW=5505KiB/s (5638kB/s)(12.0MiB/2232msec) clat (msec): min=667, max=790, avg=715.50, stdev=65.53 lat (msec): min=667, max=790, avg=715.51, stdev=65.53 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=6.32%, ctx=55, 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=178912: Fri Aug 21 05:45:33 2026 read: IOPS=0, BW=1328KiB/s (1360kB/s)(4096KiB/3084msec) clat (nsec): min=1740.2M, max=1740.2M, avg=1740206631.00, stdev= 0.00 lat (nsec): min=1740.2M, max=1740.2M, avg=1740209522.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1737], 5.00th=[ 1737], 10.00th=[ 1737], 20.00th=[ 1737], | 30.00th=[ 1737], 40.00th=[ 1737], 50.00th=[ 1737], 60.00th=[ 1737], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2656KiB/s (2720kB/s)(8192KiB/3084msec); 0 zone resets clat (msec): min=524, max=761, avg=642.93, stdev=167.68 lat (msec): min=524, max=763, avg=644.21, stdev=169.03 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 8192, max= 8192, per=77.13%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.02%, ctx=44, 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=178913: Fri Aug 21 05:45:33 2026 write: IOPS=0, BW=3983KiB/s (4079kB/s)(12.0MiB/3085msec); 0 zone resets clat (msec): min=234, max=2093, avg=967.53, stdev=989.89 lat (msec): min=235, max=2094, avg=968.04, stdev=990.15 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 234], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 2089], 80.00th=[ 2089], 90.00th=[ 2089], 95.00th=[ 2089], | 99.00th=[ 2089], 99.50th=[ 2089], 99.90th=[ 2089], 99.95th=[ 2089], | 99.99th=[ 2089] bw ( KiB/s): min= 8192, max= 8192, per=77.13%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.35%, ctx=57, 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=178914: Fri Aug 21 05:45:33 2026 write: IOPS=1, BW=4943KiB/s (5062kB/s)(12.0MiB/2486msec); 0 zone resets clat (msec): min=384, max=1395, avg=812.31, stdev=523.11 lat (msec): min=385, max=1395, avg=812.95, stdev=522.66 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 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= 6095, max= 8143, per=67.03%, avg=7119.00, stdev=1448.15, 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=5.43%, ctx=49, 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=5313KiB/s (5440kB/s), 1328KiB/s-5505KiB/s (1360kB/s-5638kB/s), io=16.0MiB (16.8MB), run=2232-3084msec WRITE: bw=10.4MiB/s (10.9MB/s), 2656KiB/s-4943KiB/s (2720kB/s-5062kB/s), io=32.0MiB (33.6MB), run=2486-3085msec