== sanity test 398b: DIO and buffer IO race ============== 08:31:29 (1787401889) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.17837 s, 7.0 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=179225: Sat Aug 22 08:34:12 2026 read: IOPS=10, BW=41.9KiB/s (42.9kB/s)(5992KiB/142869msec) clat (usec): min=30, max=320040, avg=51606.32, stdev=33055.66 lat (usec): min=30, max=320041, avg=51612.67, stdev=33064.31 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10290], 10.00th=[ 19792], 20.00th=[ 26084], | 30.00th=[ 32375], 40.00th=[ 38536], 50.00th=[ 44303], 60.00th=[ 52167], | 70.00th=[ 62653], 80.00th=[ 73925], 90.00th=[ 92799], 95.00th=[112722], | 99.00th=[156238], 99.50th=[170918], 99.90th=[295699], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 7, max= 110, per=24.73%, avg=41.55, stdev=18.21, samples=279 iops : min= 1, max= 27, avg= 9.72, stdev= 4.57, samples=279 write: IOPS=11, BW=44.1KiB/s (45.1kB/s)(6296KiB/142869msec); 0 zone resets clat (usec): min=1130, max=959646, avg=41303.97, stdev=47585.05 lat (usec): min=1131, max=959648, avg=41308.24, stdev=47584.46 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1401], 10.00th=[ 2114], 20.00th=[ 5145], | 30.00th=[ 9241], 40.00th=[ 20055], 50.00th=[ 30540], 60.00th=[ 39060], | 70.00th=[ 50594], 80.00th=[ 70779], 90.00th=[ 98042], 95.00th=[121111], | 99.00th=[189793], 99.50th=[212861], 99.90th=[308282], 99.95th=[960496], | 99.99th=[960496] bw ( KiB/s): min= 7, max= 118, per=25.03%, avg=43.80, stdev=19.65, samples=279 iops : min= 1, max= 29, avg=10.29, stdev= 4.96, samples=279 lat (usec) : 50=0.36%, 100=1.33%, 250=0.16%, 500=0.10%, 750=0.10% lat (usec) : 1000=0.03% lat (msec) : 2=4.98%, 4=3.61%, 10=7.68%, 20=7.06%, 50=37.89% lat (msec) : 100=28.35%, 250=8.20%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=5.09%, ctx=6794, 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=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=179227: Sat Aug 22 08:34:12 2026 read: IOPS=10, BW=41.7KiB/s (42.7kB/s)(5940KiB/142536msec) clat (usec): min=33, max=1092.5k, avg=52904.92, stdev=42825.71 lat (usec): min=33, max=1092.5k, avg=52913.08, stdev=42826.58 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 13829], 10.00th=[ 20579], | 20.00th=[ 26870], 30.00th=[ 32637], 40.00th=[ 39060], | 50.00th=[ 45876], 60.00th=[ 53216], 70.00th=[ 62129], | 80.00th=[ 73925], 90.00th=[ 92799], 95.00th=[ 112722], | 99.00th=[ 173016], 99.50th=[ 202376], 99.90th=[ 270533], | 99.95th=[1098908], 99.99th=[1098908] bw ( KiB/s): min= 7, max= 95, per=24.77%, avg=41.61, stdev=17.78, samples=278 iops : min= 1, max= 23, avg= 9.73, stdev= 4.47, samples=278 write: IOPS=11, BW=44.5KiB/s (45.6kB/s)(6348KiB/142536msec); 0 zone resets clat (usec): min=1102, max=311126, avg=39960.97, stdev=41224.97 lat (usec): min=1103, max=311128, avg=39974.22, stdev=41229.10 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1401], 10.00th=[ 1893], 20.00th=[ 4817], | 30.00th=[ 9241], 40.00th=[ 17957], 50.00th=[ 27919], 60.00th=[ 39584], | 70.00th=[ 51119], 80.00th=[ 69731], 90.00th=[ 95945], 95.00th=[120062], | 99.00th=[175113], 99.50th=[202376], 99.90th=[304088], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 7, max= 118, per=25.40%, avg=44.44, stdev=20.65, samples=278 iops : min= 1, max= 29, avg=10.45, stdev= 5.20, samples=278 lat (usec) : 50=0.29%, 100=1.37%, 250=0.16%, 500=0.03%, 1000=0.03% lat (msec) : 2=5.34%, 4=3.61%, 10=7.39%, 20=7.45%, 50=37.24% lat (msec) : 100=28.71%, 250=8.17%, 500=0.16%, 2000=0.03% cpu : usr=0.08%, sys=5.25%, ctx=6759, 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=179229: Sat Aug 22 08:34:12 2026 read: IOPS=10, BW=42.8KiB/s (43.8kB/s)(6028KiB/140991msec) clat (usec): min=33, max=255684, avg=49735.00, stdev=32780.51 lat (usec): min=33, max=255685, avg=49741.76, stdev=32776.42 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 202], 10.00th=[ 17695], 20.00th=[ 25560], | 30.00th=[ 31327], 40.00th=[ 36963], 50.00th=[ 43254], 60.00th=[ 50594], | 70.00th=[ 58983], 80.00th=[ 71828], 90.00th=[ 91751], 95.00th=[109577], | 99.00th=[162530], 99.50th=[191890], 99.90th=[235930], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 7, max= 95, per=25.62%, avg=43.04, stdev=17.28, samples=273 iops : min= 1, max= 23, avg=10.09, stdev= 4.35, samples=273 write: IOPS=11, BW=44.4KiB/s (45.5kB/s)(6260KiB/140991msec); 0 zone resets clat (usec): min=1128, max=1121.6k, avg=41886.29, stdev=50156.19 lat (usec): min=1130, max=1121.6k, avg=41888.69, stdev=50156.52 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1418], 10.00th=[ 2040], | 20.00th=[ 4752], 30.00th=[ 9503], 40.00th=[ 19268], | 50.00th=[ 30802], 60.00th=[ 41157], 70.00th=[ 53740], | 80.00th=[ 69731], 90.00th=[ 100140], 95.00th=[ 124257], | 99.00th=[ 181404], 99.50th=[ 214959], 99.90th=[ 299893], | 99.95th=[1115685], 99.99th=[1115685] bw ( KiB/s): min= 7, max= 112, per=25.20%, avg=44.10, stdev=20.63, samples=276 iops : min= 1, max= 28, avg=10.37, stdev= 5.21, samples=276 lat (usec) : 50=0.52%, 100=1.63%, 250=0.36%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=5.14%, 4=3.94%, 10=6.87%, 20=7.88%, 50=36.88% lat (msec) : 100=27.99%, 250=8.46%, 500=0.16%, 2000=0.03% cpu : usr=0.06%, sys=5.21%, ctx=6767, 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=179231: Sat Aug 22 08:34:12 2026 read: IOPS=10, BW=42.5KiB/s (43.5kB/s)(6052KiB/142396msec) clat (usec): min=44, max=337039, avg=51664.40, stdev=33998.80 lat (usec): min=44, max=337040, avg=51670.54, stdev=33997.00 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 1172], 10.00th=[ 19006], 20.00th=[ 25822], | 30.00th=[ 32113], 40.00th=[ 38536], 50.00th=[ 44827], 60.00th=[ 53216], | 70.00th=[ 62129], 80.00th=[ 74974], 90.00th=[ 93848], 95.00th=[110625], | 99.00th=[162530], 99.50th=[187696], 99.90th=[304088], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 7, max= 94, per=25.31%, avg=42.51, stdev=17.15, samples=276 iops : min= 1, max= 23, avg= 9.96, stdev= 4.31, samples=276 write: IOPS=10, BW=43.8KiB/s (44.8kB/s)(6236KiB/142396msec); 0 zone resets clat (usec): min=1128, max=1055.8k, avg=40852.81, stdev=47611.92 lat (usec): min=1129, max=1055.8k, avg=40855.17, stdev=47612.58 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1434], 10.00th=[ 2180], | 20.00th=[ 5211], 30.00th=[ 10290], 40.00th=[ 20055], | 50.00th=[ 29754], 60.00th=[ 40109], 70.00th=[ 51643], | 80.00th=[ 70779], 90.00th=[ 95945], 95.00th=[ 117965], | 99.00th=[ 173016], 99.50th=[ 187696], 99.90th=[ 337642], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 7, max= 119, per=24.84%, avg=43.47, stdev=18.91, samples=278 iops : min= 1, max= 29, avg=10.20, stdev= 4.75, samples=278 lat (usec) : 50=0.13%, 100=1.95%, 250=0.23%, 500=0.10%, 1000=0.03% lat (msec) : 2=4.65%, 4=3.71%, 10=6.90%, 20=8.01%, 50=37.21% lat (msec) : 100=28.94%, 250=7.94%, 500=0.16%, 2000=0.03% cpu : usr=0.07%, sys=5.10%, ctx=6873, 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=168KiB/s (172kB/s), 41.7KiB/s-42.8KiB/s (42.7kB/s-43.8kB/s), io=23.4MiB (24.6MB), run=140991-142869msec WRITE: bw=176KiB/s (180kB/s), 43.8KiB/s-44.5KiB/s (44.8kB/s-45.6kB/s), io=24.6MiB (25.7MB), run=140991-142869msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179224: Sat Aug 22 08:34:52 2026 read: IOPS=8, BW=33.0KiB/s (33.8kB/s)(5992KiB/181505msec) clat (msec): min=6, max=1038, avg=48.21, stdev=53.05 lat (msec): min=6, max=1038, avg=48.21, stdev=53.05 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 50], 80.00th=[ 71], 90.00th=[ 113], 95.00th=[ 148], | 99.00th=[ 222], 99.50th=[ 271], 99.90th=[ 368], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 128, per=25.72%, avg=33.69, stdev=25.37, samples=343 iops : min= 1, max= 32, avg= 7.73, stdev= 6.40, samples=343 write: IOPS=8, BW=34.7KiB/s (35.5kB/s)(6296KiB/181505msec); 0 zone resets clat (msec): min=8, max=444, avg=69.09, stdev=52.02 lat (msec): min=8, max=444, avg=69.10, stdev=52.02 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 49], 60.00th=[ 64], | 70.00th=[ 84], 80.00th=[ 106], 90.00th=[ 138], 95.00th=[ 167], | 99.00th=[ 243], 99.50th=[ 313], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7, max= 111, per=25.37%, avg=34.76, stdev=24.20, samples=350 iops : min= 1, max= 27, avg= 8.01, stdev= 6.09, samples=350 lat (msec) : 10=1.46%, 20=14.13%, 50=44.99%, 100=22.36%, 250=16.31% lat (msec) : 500=0.72%, 2000=0.03% cpu : usr=0.06%, sys=2.09%, ctx=5039, 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=179226: Sat Aug 22 08:34:52 2026 read: IOPS=8, BW=32.8KiB/s (33.5kB/s)(5940KiB/181339msec) clat (msec): min=7, max=1045, avg=47.50, stdev=51.35 lat (msec): min=7, max=1045, avg=47.51, stdev=51.35 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 38], | 70.00th=[ 50], 80.00th=[ 69], 90.00th=[ 110], 95.00th=[ 140], | 99.00th=[ 222], 99.50th=[ 249], 99.90th=[ 334], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 135, per=26.02%, avg=34.08, stdev=25.11, samples=338 iops : min= 1, max= 33, avg= 7.83, stdev= 6.30, samples=338 write: IOPS=8, BW=35.0KiB/s (35.8kB/s)(6348KiB/181339msec); 0 zone resets clat (msec): min=10, max=520, avg=69.53, stdev=53.21 lat (msec): min=10, max=520, avg=69.53, stdev=53.21 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 65], | 70.00th=[ 81], 80.00th=[ 105], 90.00th=[ 136], 95.00th=[ 174], | 99.00th=[ 271], 99.50th=[ 326], 99.90th=[ 414], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 7, max= 119, per=25.65%, avg=35.14, stdev=24.17, samples=350 iops : min= 1, max= 29, avg= 8.10, stdev= 6.10, samples=350 lat (msec) : 10=1.46%, 20=14.00%, 50=44.56%, 100=23.05%, 250=16.05% lat (msec) : 500=0.81%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=2.12%, ctx=5115, 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=179228: Sat Aug 22 08:34:52 2026 read: IOPS=8, BW=33.1KiB/s (33.8kB/s)(6028KiB/182357msec) clat (msec): min=5, max=367, avg=46.77, stdev=43.90 lat (msec): min=5, max=367, avg=46.77, stdev=43.90 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 50], 80.00th=[ 71], 90.00th=[ 106], 95.00th=[ 136], | 99.00th=[ 215], 99.50th=[ 241], 99.90th=[ 355], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7, max= 127, per=26.04%, avg=34.11, stdev=25.34, samples=342 iops : min= 1, max= 31, avg= 7.85, stdev= 6.39, samples=342 write: IOPS=8, BW=34.3KiB/s (35.2kB/s)(6260KiB/182357msec); 0 zone resets clat (msec): min=10, max=1100, avg=71.17, stdev=61.57 lat (msec): min=10, max=1100, avg=71.18, stdev=61.56 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 49], 60.00th=[ 65], | 70.00th=[ 83], 80.00th=[ 108], 90.00th=[ 148], 95.00th=[ 182], | 99.00th=[ 264], 99.50th=[ 330], 99.90th=[ 531], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 120, per=24.78%, avg=33.96, stdev=25.10, samples=356 iops : min= 1, max= 30, avg= 7.81, stdev= 6.32, samples=356 lat (msec) : 10=1.60%, 20=13.93%, 50=45.28%, 100=22.17%, 250=16.28% lat (msec) : 500=0.68%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=2.16%, ctx=5108, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179230: Sat Aug 22 08:34:52 2026 read: IOPS=8, BW=33.3KiB/s (34.1kB/s)(6052KiB/181668msec) clat (msec): min=5, max=364, avg=47.01, stdev=45.24 lat (msec): min=5, max=364, avg=47.01, stdev=45.24 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 50], 80.00th=[ 71], 90.00th=[ 109], 95.00th=[ 142], | 99.00th=[ 203], 99.50th=[ 259], 99.90th=[ 355], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 7, max= 134, per=26.53%, avg=34.76, stdev=25.57, samples=338 iops : min= 1, max= 33, avg= 8.01, stdev= 6.43, samples=338 write: IOPS=8, BW=34.3KiB/s (35.1kB/s)(6236KiB/181668msec); 0 zone resets clat (msec): min=10, max=1090, avg=70.60, stdev=58.32 lat (msec): min=10, max=1090, avg=70.61, stdev=58.33 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 42], 50.00th=[ 52], 60.00th=[ 65], | 70.00th=[ 83], 80.00th=[ 109], 90.00th=[ 140], 95.00th=[ 174], | 99.00th=[ 266], 99.50th=[ 300], 99.90th=[ 464], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 111, per=25.01%, avg=34.26, stdev=24.17, samples=353 iops : min= 1, max= 27, avg= 7.88, stdev= 6.10, samples=353 lat (msec) : 10=1.33%, 20=15.89%, 50=42.58%, 100=22.66%, 250=16.70% lat (msec) : 500=0.81%, 2000=0.03% cpu : usr=0.06%, sys=2.11%, ctx=5135, 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=132KiB/s (135kB/s), 32.8KiB/s-33.3KiB/s (33.5kB/s-34.1kB/s), io=23.4MiB (24.6MB), run=181339-182357msec WRITE: bw=138KiB/s (141kB/s), 34.3KiB/s-35.0KiB/s (35.1kB/s-35.8kB/s), io=24.6MiB (25.7MB), run=181339-182357msec 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=179278: Sat Aug 22 08:35:35 2026 read: IOPS=11, BW=179KiB/s (183kB/s)(5920KiB/33116msec) clat (usec): min=40, max=152980, avg=46244.30, stdev=26974.02 lat (usec): min=40, max=152981, avg=46245.58, stdev=26974.02 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 72], 10.00th=[ 15270], 20.00th=[ 26346], | 30.00th=[ 32113], 40.00th=[ 38536], 50.00th=[ 43779], 60.00th=[ 49021], | 70.00th=[ 56361], 80.00th=[ 65274], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[127402], 99.50th=[147850], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 31, max= 319, per=25.37%, avg=178.58, stdev=55.00, samples=65 iops : min= 1, max= 19, avg=10.37, stdev= 3.43, samples=65 write: IOPS=12, BW=192KiB/s (197kB/s)(6368KiB/33116msec); 0 zone resets clat (usec): min=1807, max=235396, avg=39264.96, stdev=39036.48 lat (usec): min=1809, max=235398, avg=39302.51, stdev=39034.04 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 2737], 10.00th=[ 4293], 20.00th=[ 7242], | 30.00th=[ 11469], 40.00th=[ 18744], 50.00th=[ 26870], 60.00th=[ 35914], | 70.00th=[ 48497], 80.00th=[ 69731], 90.00th=[ 98042], 95.00th=[116917], | 99.00th=[189793], 99.50th=[206570], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 29, max= 384, per=26.01%, avg=192.77, stdev=77.41, samples=65 iops : min= 1, max= 24, avg=11.28, stdev= 4.91, samples=65 lat (usec) : 50=0.39%, 100=3.39%, 250=0.52% lat (msec) : 2=1.17%, 4=3.65%, 10=9.24%, 20=8.98%, 50=38.54% lat (msec) : 100=27.86%, 250=6.25% cpu : usr=0.07%, sys=6.33%, ctx=1767, 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=179279: Sat Aug 22 08:35:35 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(5744KiB/33988msec) clat (usec): min=38, max=198041, avg=47737.72, stdev=31193.07 lat (usec): min=39, max=198043, avg=47738.99, stdev=31193.10 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 64], 10.00th=[ 159], 20.00th=[ 26084], | 30.00th=[ 31065], 40.00th=[ 36439], 50.00th=[ 43254], 60.00th=[ 51119], | 70.00th=[ 61080], 80.00th=[ 71828], 90.00th=[ 84411], 95.00th=[103285], | 99.00th=[154141], 99.50th=[160433], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 29, max= 316, per=23.94%, avg=168.55, stdev=65.61, samples=67 iops : min= 1, max= 19, avg= 9.78, stdev= 4.12, samples=67 write: IOPS=12, BW=193KiB/s (197kB/s)(6544KiB/33988msec); 0 zone resets clat (usec): min=1692, max=240890, avg=40370.12, stdev=38346.73 lat (usec): min=1695, max=240891, avg=40373.18, stdev=38347.69 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2835], 10.00th=[ 4555], 20.00th=[ 7570], | 30.00th=[ 11863], 40.00th=[ 19792], 50.00th=[ 29492], 60.00th=[ 40633], | 70.00th=[ 51119], 80.00th=[ 67634], 90.00th=[ 95945], 95.00th=[117965], | 99.00th=[149947], 99.50th=[183501], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 318, per=25.90%, avg=191.90, stdev=69.67, samples=67 iops : min= 1, max= 19, avg=11.22, stdev= 4.42, samples=67 lat (usec) : 50=0.52%, 100=4.04%, 250=0.26%, 500=0.13%, 1000=0.13% lat (msec) : 2=1.04%, 4=2.99%, 10=10.03%, 20=8.85%, 50=36.59% lat (msec) : 100=28.26%, 250=7.16% cpu : usr=0.07%, sys=6.33%, ctx=1758, 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=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=179280: Sat Aug 22 08:35:35 2026 read: IOPS=11, BW=189KiB/s (193kB/s)(6256KiB/33121msec) clat (usec): min=42, max=215692, avg=47680.89, stdev=30337.21 lat (usec): min=42, max=215693, avg=47682.92, stdev=30337.04 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 76], 10.00th=[ 14353], 20.00th=[ 27919], | 30.00th=[ 33162], 40.00th=[ 38536], 50.00th=[ 43779], 60.00th=[ 49021], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[147850], 99.50th=[189793], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 62, max= 348, per=26.81%, avg=188.71, stdev=67.40, samples=65 iops : min= 3, max= 21, avg=11.02, stdev= 4.27, samples=65 write: IOPS=11, BW=182KiB/s (186kB/s)(6032KiB/33121msec); 0 zone resets clat (usec): min=1738, max=232804, avg=38032.52, stdev=36001.94 lat (usec): min=1740, max=232808, avg=38035.63, stdev=36001.53 clat percentiles (usec): | 1.00th=[ 1844], 5.00th=[ 2900], 10.00th=[ 4080], 20.00th=[ 7635], | 30.00th=[ 11863], 40.00th=[ 19792], 50.00th=[ 27919], 60.00th=[ 36439], | 70.00th=[ 48497], 80.00th=[ 62129], 90.00th=[ 89654], 95.00th=[110625], | 99.00th=[168821], 99.50th=[181404], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 61, max= 320, per=24.13%, avg=178.78, stdev=69.05, samples=65 iops : min= 3, max= 20, avg=10.38, stdev= 4.34, samples=65 lat (usec) : 50=0.26%, 100=3.39%, 250=0.78%, 750=0.26% lat (msec) : 2=1.30%, 4=3.52%, 10=8.85%, 20=7.68%, 50=40.10% lat (msec) : 100=27.99%, 250=5.86% cpu : usr=0.06%, sys=6.42%, ctx=1818, 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=179281: Sat Aug 22 08:35:35 2026 read: IOPS=11, BW=189KiB/s (194kB/s)(6032KiB/31838msec) clat (usec): min=53, max=210701, avg=46378.68, stdev=29745.26 lat (usec): min=53, max=210703, avg=46380.51, stdev=29745.06 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 67], 10.00th=[ 125], 20.00th=[ 25035], | 30.00th=[ 32375], 40.00th=[ 37487], 50.00th=[ 43254], 60.00th=[ 48497], | 70.00th=[ 56886], 80.00th=[ 67634], 90.00th=[ 82314], 95.00th=[ 99091], | 99.00th=[160433], 99.50th=[177210], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 59, max= 349, per=27.18%, avg=191.34, stdev=67.70, samples=61 iops : min= 3, max= 21, avg=11.18, stdev= 4.29, samples=61 write: IOPS=12, BW=196KiB/s (201kB/s)(6256KiB/31838msec); 0 zone resets clat (usec): min=1664, max=191907, avg=35807.33, stdev=34768.79 lat (usec): min=1666, max=191909, avg=35813.31, stdev=34769.54 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 3064], 10.00th=[ 4293], 20.00th=[ 7046], | 30.00th=[ 10814], 40.00th=[ 17171], 50.00th=[ 23987], 60.00th=[ 32113], | 70.00th=[ 40633], 80.00th=[ 63701], 90.00th=[ 89654], 95.00th=[107480], | 99.00th=[141558], 99.50th=[160433], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 61, max= 380, per=26.59%, avg=197.03, stdev=72.84, samples=62 iops : min= 3, max= 23, avg=11.53, stdev= 4.58, samples=62 lat (usec) : 100=4.43%, 250=0.78% lat (msec) : 2=0.52%, 4=3.78%, 10=9.77%, 20=9.51%, 50=40.10% lat (msec) : 100=25.26%, 250=5.86% cpu : usr=0.05%, sys=6.29%, ctx=1747, 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=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=705KiB/s (722kB/s), 169KiB/s-189KiB/s (173kB/s-194kB/s), io=23.4MiB (24.5MB), run=31838-33988msec WRITE: bw=741KiB/s (759kB/s), 182KiB/s-196KiB/s (186kB/s-201kB/s), io=24.6MiB (25.8MB), run=31838-33988msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179274: Sat Aug 22 08:35:50 2026 read: IOPS=7, BW=124KiB/s (126kB/s)(5920KiB/47924msec) clat (msec): min=11, max=296, avg=50.17, stdev=37.80 lat (msec): min=11, max=296, avg=50.17, stdev=37.80 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 25], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 38], 60.00th=[ 44], | 70.00th=[ 54], 80.00th=[ 69], 90.00th=[ 105], 95.00th=[ 133], | 99.00th=[ 188], 99.50th=[ 230], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 350, per=25.13%, avg=123.39, stdev=67.97, samples=93 iops : min= 1, max= 21, avg= 6.90, stdev= 4.32, samples=93 write: IOPS=8, BW=133KiB/s (136kB/s)(6368KiB/47924msec); 0 zone resets clat (msec): min=19, max=266, avg=73.58, stdev=39.98 lat (msec): min=19, max=266, avg=73.59, stdev=39.98 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 32], 10.00th=[ 35], 20.00th=[ 41], | 30.00th=[ 51], 40.00th=[ 57], 50.00th=[ 63], 60.00th=[ 71], | 70.00th=[ 84], 80.00th=[ 99], 90.00th=[ 128], 95.00th=[ 157], | 99.00th=[ 224], 99.50th=[ 232], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 31, max= 317, per=25.51%, avg=131.87, stdev=57.13, samples=94 iops : min= 1, max= 19, avg= 7.44, stdev= 3.67, samples=94 lat (msec) : 20=5.47%, 50=42.71%, 100=36.72%, 250=14.84%, 500=0.26% cpu : usr=0.05%, sys=2.12%, ctx=1195, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179275: Sat Aug 22 08:35:50 2026 read: IOPS=7, BW=118KiB/s (121kB/s)(5744KiB/48722msec) clat (msec): min=10, max=322, avg=51.88, stdev=43.49 lat (msec): min=10, max=322, avg=51.88, stdev=43.49 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 25], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 44], | 70.00th=[ 52], 80.00th=[ 66], 90.00th=[ 114], 95.00th=[ 140], | 99.00th=[ 234], 99.50th=[ 284], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 31, max= 382, per=24.24%, avg=119.01, stdev=70.21, samples=94 iops : min= 1, max= 23, avg= 6.63, stdev= 4.48, samples=94 write: IOPS=8, BW=134KiB/s (138kB/s)(6544KiB/48722msec); 0 zone resets clat (msec): min=18, max=285, avg=73.01, stdev=38.98 lat (msec): min=18, max=285, avg=73.01, stdev=38.98 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 32], 10.00th=[ 35], 20.00th=[ 42], | 30.00th=[ 48], 40.00th=[ 54], 50.00th=[ 62], 60.00th=[ 71], | 70.00th=[ 87], 80.00th=[ 106], 90.00th=[ 128], 95.00th=[ 146], | 99.00th=[ 201], 99.50th=[ 220], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 31, max= 286, per=25.79%, avg=133.33, stdev=63.87, samples=96 iops : min= 1, max= 17, avg= 7.53, stdev= 4.05, samples=96 lat (msec) : 20=5.21%, 50=44.79%, 100=32.94%, 250=16.67%, 500=0.39% cpu : usr=0.06%, sys=2.13%, ctx=1202, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179276: Sat Aug 22 08:35:50 2026 read: IOPS=8, BW=129KiB/s (132kB/s)(6256KiB/48532msec) clat (msec): min=9, max=329, avg=50.53, stdev=41.96 lat (msec): min=9, max=329, avg=50.54, stdev=41.96 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 69], 90.00th=[ 101], 95.00th=[ 134], | 99.00th=[ 241], 99.50th=[ 296], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 380, per=26.90%, avg=132.09, stdev=81.40, samples=93 iops : min= 1, max= 23, avg= 7.45, stdev= 5.14, samples=93 write: IOPS=7, BW=124KiB/s (127kB/s)(6032KiB/48532msec); 0 zone resets clat (msec): min=16, max=277, avg=75.81, stdev=45.06 lat (msec): min=16, max=277, avg=75.81, stdev=45.06 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 28], 10.00th=[ 33], 20.00th=[ 40], | 30.00th=[ 46], 40.00th=[ 53], 50.00th=[ 62], 60.00th=[ 72], | 70.00th=[ 88], 80.00th=[ 110], 90.00th=[ 142], 95.00th=[ 165], | 99.00th=[ 224], 99.50th=[ 241], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 318, per=24.03%, avg=124.26, stdev=65.95, samples=94 iops : min= 1, max= 19, avg= 6.97, stdev= 4.19, samples=94 lat (msec) : 10=0.39%, 20=6.51%, 50=45.44%, 100=30.47%, 250=16.67% lat (msec) : 500=0.52% cpu : usr=0.04%, sys=2.18%, ctx=1286, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179277: Sat Aug 22 08:35:50 2026 read: IOPS=7, BW=124KiB/s (127kB/s)(6032KiB/48460msec) clat (msec): min=8, max=238, avg=52.20, stdev=39.92 lat (msec): min=8, max=238, avg=52.20, stdev=39.92 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 38], 60.00th=[ 44], | 70.00th=[ 54], 80.00th=[ 74], 90.00th=[ 112], 95.00th=[ 142], | 99.00th=[ 201], 99.50th=[ 213], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 31, max= 317, per=26.33%, avg=129.28, stdev=66.11, samples=90 iops : min= 1, max= 19, avg= 7.28, stdev= 4.20, samples=90 write: IOPS=8, BW=129KiB/s (132kB/s)(6256KiB/48460msec); 0 zone resets clat (msec): min=14, max=311, avg=72.96, stdev=43.88 lat (msec): min=14, max=311, avg=72.96, stdev=43.88 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 30], 10.00th=[ 35], 20.00th=[ 41], | 30.00th=[ 47], 40.00th=[ 53], 50.00th=[ 61], 60.00th=[ 67], | 70.00th=[ 82], 80.00th=[ 103], 90.00th=[ 132], 95.00th=[ 161], | 99.00th=[ 236], 99.50th=[ 275], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 350, per=24.71%, avg=127.73, stdev=62.77, samples=95 iops : min= 1, max= 21, avg= 7.18, stdev= 3.98, samples=95 lat (msec) : 10=0.39%, 20=5.34%, 50=44.53%, 100=32.81%, 250=16.54% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=2.19%, ctx=1215, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=492KiB/s (503kB/s), 118KiB/s-129KiB/s (121kB/s-132kB/s), io=23.4MiB (24.5MB), run=47924-48722msec WRITE: bw=517KiB/s (530kB/s), 124KiB/s-134KiB/s (127kB/s-138kB/s), io=24.6MiB (25.8MB), run=47924-48722msec 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=179295: Sat Aug 22 08:36:11 2026 read: IOPS=1, BW=1170KiB/s (1199kB/s)(7168KiB/6124msec) clat (usec): min=863, max=325367, avg=205621.61, stdev=118362.26 lat (usec): min=865, max=325368, avg=205623.31, stdev=118361.96 clat percentiles (usec): | 1.00th=[ 865], 5.00th=[ 865], 10.00th=[ 865], 20.00th=[145753], | 30.00th=[158335], 40.00th=[158335], 50.00th=[187696], 60.00th=[299893], | 70.00th=[299893], 80.00th=[320865], 90.00th=[325059], 95.00th=[325059], | 99.00th=[325059], 99.50th=[325059], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 2039, max= 4243, per=100.00%, avg=3443.00, stdev=1219.84, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=0, BW=836KiB/s (856kB/s)(5120KiB/6124msec); 0 zone resets clat (msec): min=277, max=2840, avg=898.35, stdev=1096.85 lat (msec): min=277, max=2840, avg=898.51, stdev=1096.80 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 1988, max= 3886, per=75.49%, avg=2632.33, stdev=1085.85, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 1000=8.33% lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=8.70%, ctx=226, 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=179296: Sat Aug 22 08:36:11 2026 read: IOPS=0, BW=249KiB/s (255kB/s)(2048KiB/8221msec) clat (msec): min=378, max=2890, avg=1634.32, stdev=1776.48 lat (msec): min=378, max=2890, avg=1634.32, stdev=1776.48 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 2903], | 70.00th=[ 2903], 80.00th=[ 2903], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 2019, max= 2039, per=81.45%, avg=2029.00, stdev=14.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1246KiB/s (1275kB/s)(10.0MiB/8221msec); 0 zone resets clat (msec): min=236, max=776, avg=487.45, stdev=180.01 lat (msec): min=236, max=776, avg=487.60, stdev=180.04 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 275], | 30.00th=[ 342], 40.00th=[ 409], 50.00th=[ 468], 60.00th=[ 523], | 70.00th=[ 542], 80.00th=[ 567], 90.00th=[ 735], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1988, max= 4047, per=74.38%, avg=2593.57, stdev=977.09, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=8.33%, 500=41.67%, 750=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.50%, ctx=575, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179297: Sat Aug 22 08:36:11 2026 read: IOPS=0, BW=928KiB/s (950kB/s)(6144KiB/6622msec) clat (usec): min=386, max=795601, avg=161149.05, stdev=317106.62 lat (usec): min=387, max=795602, avg=161150.59, stdev=317106.29 clat percentiles (usec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 1237], | 30.00th=[ 1237], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 8455], | 70.00th=[160433], 80.00th=[160433], 90.00th=[792724], 95.00th=[792724], | 99.00th=[792724], 99.50th=[792724], 99.90th=[792724], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 1875, max= 3976, per=98.69%, avg=2458.25, stdev=1014.07, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=928KiB/s (950kB/s)(6144KiB/6622msec); 0 zone resets clat (msec): min=238, max=3101, avg=892.05, stdev=1108.22 lat (msec): min=238, max=3101, avg=892.11, stdev=1108.24 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 472], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 3104], 95.00th=[ 3104], | 99.00th=[ 3104], 99.50th=[ 3104], 99.90th=[ 3104], 99.95th=[ 3104], | 99.99th=[ 3104] bw ( KiB/s): min= 1875, max= 4047, per=70.64%, avg=2463.25, stdev=1056.85, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=8.33% lat (msec) : 2=16.67%, 10=8.33%, 250=16.67%, 500=25.00%, 1000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=6.15%, ctx=229, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179298: Sat Aug 22 08:36:11 2026 read: IOPS=0, BW=678KiB/s (694kB/s)(5120KiB/7554msec) clat (usec): min=498, max=842284, avg=188096.25, stdev=367839.86 lat (usec): min=500, max=842286, avg=188097.37, stdev=367840.06 clat percentiles (usec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 498], 50.00th=[ 4113], 60.00th=[ 4113], | 70.00th=[ 92799], 80.00th=[ 92799], 90.00th=[843056], 95.00th=[843056], | 99.00th=[843056], 99.50th=[843056], 99.90th=[843056], 99.95th=[843056], | 99.99th=[843056] bw ( KiB/s): min= 2039, max= 6047, per=100.00%, avg=4043.00, stdev=2834.08, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=0, BW=949KiB/s (972kB/s)(7168KiB/7554msec); 0 zone resets clat (msec): min=317, max=3215, avg=903.14, stdev=1038.13 lat (msec): min=317, max=3215, avg=903.53, stdev=1038.06 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 321], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 617], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 776], 90.00th=[ 3205], 95.00th=[ 3205], | 99.00th=[ 3205], 99.50th=[ 3205], 99.90th=[ 3205], 99.95th=[ 3205], | 99.99th=[ 3205] bw ( KiB/s): min= 1943, max= 4087, per=69.29%, avg=2416.00, stdev=934.84, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=16.67% lat (msec) : 10=8.33%, 100=8.33%, 500=25.00%, 750=16.67%, 1000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=7.07%, ctx=160, 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=2491KiB/s (2551kB/s), 249KiB/s-1170KiB/s (255kB/s-1199kB/s), io=20.0MiB (20.0MB), run=6124-8221msec WRITE: bw=3488KiB/s (3571kB/s), 836KiB/s-1246KiB/s (856kB/s-1275kB/s), io=28.0MiB (29.4MB), run=6124-8221msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179299: Sat Aug 22 08:36:11 2026 read: IOPS=1, BW=1035KiB/s (1060kB/s)(7168KiB/6927msec) clat (msec): min=117, max=234, avg=159.12, stdev=43.19 lat (msec): min=117, max=234, avg=159.12, stdev=43.19 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 118], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 171], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 178], 90.00th=[ 234], 95.00th=[ 234], | 99.00th=[ 234], 99.50th=[ 234], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 1721, max= 2925, per=90.25%, avg=2141.60, stdev=457.01, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=0, BW=739KiB/s (757kB/s)(5120KiB/6927msec); 0 zone resets clat (msec): min=157, max=3259, avg=1106.14, stdev=1244.90 lat (msec): min=157, max=3259, avg=1106.24, stdev=1244.92 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 844], 60.00th=[ 844], | 70.00th=[ 911], 80.00th=[ 911], 90.00th=[ 3272], 95.00th=[ 3272], | 99.00th=[ 3272], 99.50th=[ 3272], 99.90th=[ 3272], 99.95th=[ 3272], | 99.99th=[ 3272] bw ( KiB/s): min= 1721, max= 4096, per=74.56%, avg=2477.00, stdev=1090.12, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (msec) : 250=66.67%, 500=8.33%, 1000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.51%, ctx=96, 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=179300: Sat Aug 22 08:36:11 2026 read: IOPS=0, BW=243KiB/s (249kB/s)(2048KiB/8411msec) clat (msec): min=146, max=2762, avg=1454.53, stdev=1849.71 lat (msec): min=146, max=2762, avg=1454.53, stdev=1849.71 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 146], 60.00th=[ 2769], | 70.00th=[ 2769], 80.00th=[ 2769], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 2027, max= 2043, per=85.76%, avg=2035.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1217KiB/s (1247kB/s)(10.0MiB/8411msec); 0 zone resets clat (msec): min=200, max=984, avg=530.06, stdev=204.27 lat (msec): min=200, max=984, avg=530.14, stdev=204.26 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 359], | 30.00th=[ 435], 40.00th=[ 456], 50.00th=[ 514], 60.00th=[ 567], | 70.00th=[ 575], 80.00th=[ 584], 90.00th=[ 634], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 1721, max= 4063, per=67.60%, avg=2245.62, stdev=742.43, samples=8 iops : min= 1, max= 3, avg= 1.50, stdev= 0.76, samples=8 lat (msec) : 250=16.67%, 500=25.00%, 750=41.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.91%, ctx=226, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179301: Sat Aug 22 08:36:11 2026 read: IOPS=0, BW=790KiB/s (809kB/s)(6144KiB/7781msec) clat (msec): min=173, max=504, avg=258.21, stdev=126.44 lat (msec): min=173, max=504, avg=258.21, stdev=126.44 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 188], 50.00th=[ 188], 60.00th=[ 251], | 70.00th=[ 259], 80.00th=[ 259], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 2027, max= 2048, per=86.03%, avg=2041.50, stdev= 9.95, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 write: IOPS=0, BW=790KiB/s (809kB/s)(6144KiB/7781msec); 0 zone resets clat (msec): min=138, max=3523, avg=988.58, stdev=1256.68 lat (msec): min=138, max=3523, avg=989.89, stdev=1256.21 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 625], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 3540], 95.00th=[ 3540], | 99.00th=[ 3540], 99.50th=[ 3540], 99.90th=[ 3540], 99.95th=[ 3540], | 99.99th=[ 3540] bw ( KiB/s): min= 1721, max= 2048, per=59.09%, avg=1963.00, stdev=136.37, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=41.67%, 500=16.67%, 750=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.22%, ctx=164, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179302: Sat Aug 22 08:36:11 2026 read: IOPS=0, BW=593KiB/s (608kB/s)(5120KiB/8629msec) clat (msec): min=78, max=1157, avg=444.77, stdev=435.15 lat (msec): min=78, max=1157, avg=444.78, stdev=435.15 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 80], | 30.00th=[ 111], 40.00th=[ 111], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 2043, max= 4055, per=100.00%, avg=2715.33, stdev=1160.19, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=0, BW=831KiB/s (851kB/s)(7168KiB/8629msec); 0 zone resets clat (msec): min=121, max=3067, avg=908.15, stdev=996.86 lat (msec): min=121, max=3067, avg=908.24, stdev=996.87 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 288], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 726], 60.00th=[ 827], | 70.00th=[ 827], 80.00th=[ 927], 90.00th=[ 3071], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min= 2027, max= 3442, per=71.91%, avg=2389.00, stdev=702.05, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=16.67%, 500=33.33%, 750=8.33%, 1000=16.67% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=2.02%, ctx=62, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2373KiB/s (2430kB/s), 243KiB/s-1035KiB/s (249kB/s-1060kB/s), io=20.0MiB (20.0MB), run=6927-8629msec WRITE: bw=3323KiB/s (3402kB/s), 739KiB/s-1217KiB/s (757kB/s-1247kB/s), io=28.0MiB (29.4MB), run=6927-8629msec 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=179314: Sat Aug 22 08:36:29 2026 read: IOPS=1, BW=4863KiB/s (4979kB/s)(12.0MiB/2527msec) clat (msec): min=775, max=938, avg=841.64, stdev=85.39 lat (msec): min=775, max=938, avg=841.64, stdev=85.39 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8094, max= 8143, per=100.00%, avg=8118.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=16.07%, ctx=356, 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=179315: Sat Aug 22 08:36:29 2026 read: IOPS=0, BW=1427KiB/s (1461kB/s)(4096KiB/2871msec) clat (nsec): min=1010.6M, max=1010.6M, avg=1010611974.00, stdev= 0.00 lat (nsec): min=1010.6M, max=1010.6M, avg=1010613750.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] 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=2853KiB/s (2922kB/s)(8192KiB/2871msec); 0 zone resets clat (msec): min=867, max=991, avg=929.50, stdev=87.64 lat (msec): min=867, max=991, avg=929.87, stdev=87.57 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 995], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 8094, max= 8094, per=86.01%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.10%, sys=6.17%, ctx=92, 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=179316: Sat Aug 22 08:36:29 2026 write: IOPS=0, BW=3529KiB/s (3614kB/s)(12.0MiB/3482msec); 0 zone resets clat (msec): min=210, max=3002, avg=1159.40, stdev=1596.23 lat (msec): min=210, max=3002, avg=1159.89, stdev=1596.24 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 266], 50.00th=[ 266], 60.00th=[ 266], | 70.00th=[ 3004], 80.00th=[ 3004], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 8094, max= 8094, per=86.01%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=4.08%, ctx=40, 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=179317: Sat Aug 22 08:36:29 2026 write: IOPS=1, BW=4126KiB/s (4225kB/s)(12.0MiB/2978msec); 0 zone resets clat (msec): min=262, max=2084, avg=991.89, stdev=963.98 lat (msec): min=262, max=2085, avg=992.33, stdev=964.05 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 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= 5712, max= 8143, per=73.62%, avg=6927.50, stdev=1718.98, 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=3.36%, ctx=50, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5707KiB/s (5844kB/s), 1427KiB/s-4863KiB/s (1461kB/s-4979kB/s), io=16.0MiB (16.8MB), run=2527-2871msec WRITE: bw=9411KiB/s (9637kB/s), 2853KiB/s-4126KiB/s (2922kB/s-4225kB/s), io=32.0MiB (33.6MB), run=2871-3482msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179309: Sat Aug 22 08:36:29 2026 read: IOPS=0, BW=3891KiB/s (3984kB/s)(12.0MiB/3158msec) clat (msec): min=584, max=1363, avg=1028.78, stdev=400.68 lat (msec): min=584, max=1363, avg=1028.78, stdev=400.68 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1133], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 6122, max= 8143, per=100.00%, avg=7132.50, stdev=1429.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.45%, ctx=50, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179310: Sat Aug 22 08:36:29 2026 read: IOPS=0, BW=1040KiB/s (1065kB/s)(4096KiB/3940msec) clat (nsec): min=1479.6M, max=1479.6M, avg=1479620555.00, stdev= 0.00 lat (nsec): min=1479.6M, max=1479.6M, avg=1479621571.00, 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= 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=2079KiB/s (2129kB/s)(8192KiB/3940msec); 0 zone resets clat (msec): min=422, max=2000, avg=1211.45, stdev=1115.21 lat (msec): min=425, max=2000, avg=1213.01, stdev=1114.14 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 2005], | 70.00th=[ 2005], 80.00th=[ 2005], 90.00th=[ 2005], 95.00th=[ 2005], | 99.00th=[ 2005], 99.50th=[ 2005], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 8159, max= 8159, per=98.11%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.49%, ctx=44, 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=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=179311: Sat Aug 22 08:36:29 2026 write: IOPS=2, BW=9481KiB/s (9709kB/s)(12.0MiB/1296msec); 0 zone resets clat (msec): min=242, max=498, avg=410.99, stdev=145.97 lat (msec): min=242, max=500, avg=411.97, stdev=146.69 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 493], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 6206, max= 7968, per=85.22%, avg=7087.00, stdev=1245.92, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=66.67% cpu : usr=0.00%, sys=8.88%, 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=179312: Sat Aug 22 08:36:29 2026 write: IOPS=1, BW=4279KiB/s (4381kB/s)(12.0MiB/2872msec); 0 zone resets clat (msec): min=172, max=2281, avg=934.66, stdev=1170.06 lat (msec): min=172, max=2282, avg=935.12, stdev=1170.02 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 2299], 80.00th=[ 2299], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min=11976, max=11976, per=100.00%, avg=11976.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=4.46%, ctx=44, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4158KiB/s (4258kB/s), 1040KiB/s-3891KiB/s (1065kB/s-3984kB/s), io=16.0MiB (16.8MB), run=3158-3940msec WRITE: bw=8317KiB/s (8516kB/s), 2079KiB/s-9481KiB/s (2129kB/s-9709kB/s), io=32.0MiB (33.6MB), run=1296-3940msec