== sanity test 398b: DIO and buffer IO race ============== 10:08:59 (1789481339) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.10386 s, 12.3 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=147730: Tue Sep 15 10:10:31 2026 read: IOPS=19, BW=76.6KiB/s (78.5kB/s)(5992KiB/78211msec) clat (usec): min=34, max=661016, avg=25993.73, stdev=25955.46 lat (usec): min=34, max=661018, avg=25998.41, stdev=25956.48 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 92], 10.00th=[ 9503], 20.00th=[ 13173], | 30.00th=[ 15795], 40.00th=[ 18482], 50.00th=[ 21890], 60.00th=[ 25560], | 70.00th=[ 30540], 80.00th=[ 36439], 90.00th=[ 46400], 95.00th=[ 56886], | 99.00th=[104334], 99.50th=[115868], 99.90th=[320865], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 7, max= 152, per=24.80%, avg=75.90, stdev=28.47, samples=155 iops : min= 1, max= 38, avg=18.34, stdev= 7.14, samples=155 write: IOPS=20, BW=80.5KiB/s (82.4kB/s)(6296KiB/78211msec); 0 zone resets clat (usec): min=985, max=518608, avg=24732.01, stdev=27138.30 lat (usec): min=987, max=518609, avg=24733.96, stdev=27138.35 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1680], 10.00th=[ 2376], 20.00th=[ 3818], | 30.00th=[ 6128], 40.00th=[ 12125], 50.00th=[ 18744], 60.00th=[ 24773], | 70.00th=[ 32375], 80.00th=[ 40633], 90.00th=[ 55313], 95.00th=[ 68682], | 99.00th=[106431], 99.50th=[135267], 99.90th=[210764], 99.95th=[517997], | 99.99th=[517997] bw ( KiB/s): min= 7, max= 174, per=25.04%, avg=80.37, stdev=27.13, samples=154 iops : min= 1, max= 43, avg=19.47, stdev= 6.81, samples=154 lat (usec) : 50=0.36%, 100=2.34%, 250=1.11%, 500=0.20%, 750=0.10% lat (usec) : 1000=0.10% lat (msec) : 2=3.91%, 4=6.93%, 10=9.21%, 20=24.38%, 50=40.98% lat (msec) : 100=9.21%, 250=1.07%, 500=0.03%, 750=0.07% cpu : usr=0.11%, sys=10.54%, ctx=7456, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147732: Tue Sep 15 10:10:31 2026 read: IOPS=19, BW=77.1KiB/s (78.0kB/s)(5940KiB/77025msec) clat (usec): min=36, max=429443, avg=25245.67, stdev=20369.09 lat (usec): min=36, max=429445, avg=25247.08, stdev=20369.09 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 110], 10.00th=[ 9503], 20.00th=[ 13304], | 30.00th=[ 15926], 40.00th=[ 18220], 50.00th=[ 21103], 60.00th=[ 25035], | 70.00th=[ 30016], 80.00th=[ 36439], 90.00th=[ 44303], 95.00th=[ 53740], | 99.00th=[ 83362], 99.50th=[101188], 99.90th=[248513], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 7, max= 143, per=25.04%, avg=76.63, stdev=25.71, samples=153 iops : min= 1, max= 35, avg=18.53, stdev= 6.47, samples=153 write: IOPS=20, BW=82.4KiB/s (84.4kB/s)(6348KiB/77025msec); 0 zone resets clat (usec): min=791, max=719956, avg=24694.00, stdev=30502.63 lat (usec): min=793, max=719956, avg=24698.94, stdev=30502.40 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1500], 10.00th=[ 2147], 20.00th=[ 3720], | 30.00th=[ 6128], 40.00th=[ 12780], 50.00th=[ 19268], 60.00th=[ 24511], | 70.00th=[ 31589], 80.00th=[ 40109], 90.00th=[ 53216], 95.00th=[ 66847], | 99.00th=[108528], 99.50th=[131597], 99.90th=[295699], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 7, max= 159, per=25.52%, avg=81.92, stdev=30.04, samples=153 iops : min= 1, max= 39, avg=19.86, stdev= 7.57, samples=153 lat (usec) : 50=0.39%, 100=1.79%, 250=1.04%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=4.62%, 4=6.58%, 10=9.57%, 20=24.38%, 50=41.60% lat (msec) : 100=8.82%, 250=0.78%, 500=0.10%, 750=0.03% cpu : usr=0.11%, sys=10.49%, ctx=7366, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=147734: Tue Sep 15 10:10:31 2026 read: IOPS=19, BW=77.3KiB/s (79.1kB/s)(6028KiB/78024msec) clat (usec): min=30, max=211379, avg=24437.35, stdev=17226.16 lat (usec): min=30, max=211381, avg=24439.38, stdev=17225.93 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 89], 10.00th=[ 8717], 20.00th=[ 12911], | 30.00th=[ 15401], 40.00th=[ 17957], 50.00th=[ 21103], 60.00th=[ 25297], | 70.00th=[ 29754], 80.00th=[ 35390], 90.00th=[ 42730], 95.00th=[ 52691], | 99.00th=[ 81265], 99.50th=[100140], 99.90th=[173016], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 16, max= 151, per=25.42%, avg=77.77, stdev=26.09, samples=153 iops : min= 4, max= 37, avg=18.82, stdev= 6.55, samples=153 write: IOPS=20, BW=80.2KiB/s (82.2kB/s)(6260KiB/78024msec); 0 zone resets clat (usec): min=989, max=800646, avg=26091.42, stdev=32157.30 lat (usec): min=990, max=800649, avg=26095.83, stdev=32157.85 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1713], 10.00th=[ 2507], 20.00th=[ 3916], | 30.00th=[ 7177], 40.00th=[ 14222], 50.00th=[ 19530], 60.00th=[ 25822], | 70.00th=[ 32637], 80.00th=[ 42730], 90.00th=[ 57410], 95.00th=[ 71828], | 99.00th=[106431], 99.50th=[135267], 99.90th=[329253], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 23, max= 166, per=25.16%, avg=80.75, stdev=26.83, samples=153 iops : min= 5, max= 41, avg=19.56, stdev= 6.77, samples=153 lat (usec) : 50=0.26%, 100=2.70%, 250=0.91%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=3.35%, 4=7.00%, 10=8.69%, 20=25.39%, 50=41.28% lat (msec) : 100=9.15%, 250=0.91%, 500=0.03%, 1000=0.03% cpu : usr=0.12%, sys=10.51%, ctx=7330, 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=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=147736: Tue Sep 15 10:10:31 2026 read: IOPS=19, BW=77.3KiB/s (79.2kB/s)(6052KiB/78271msec) clat (usec): min=38, max=513794, avg=25446.94, stdev=21613.34 lat (usec): min=38, max=513796, avg=25454.31, stdev=21611.05 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 101], 10.00th=[ 9372], 20.00th=[ 12780], | 30.00th=[ 15926], 40.00th=[ 18482], 50.00th=[ 21365], 60.00th=[ 25822], | 70.00th=[ 30540], 80.00th=[ 36439], 90.00th=[ 45351], 95.00th=[ 54789], | 99.00th=[ 84411], 99.50th=[108528], 99.90th=[200279], 99.95th=[513803], | 99.99th=[513803] bw ( KiB/s): min= 15, max= 159, per=25.22%, avg=77.16, stdev=25.76, samples=154 iops : min= 3, max= 39, avg=18.66, stdev= 6.47, samples=154 write: IOPS=19, BW=79.7KiB/s (81.6kB/s)(6236KiB/78271msec); 0 zone resets clat (usec): min=973, max=737434, avg=25299.01, stdev=30046.54 lat (usec): min=975, max=737435, avg=25302.16, stdev=30046.07 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1598], 10.00th=[ 2409], 20.00th=[ 3949], | 30.00th=[ 6849], 40.00th=[ 14484], 50.00th=[ 20579], 60.00th=[ 26084], | 70.00th=[ 32113], 80.00th=[ 40109], 90.00th=[ 55313], 95.00th=[ 68682], | 99.00th=[104334], 99.50th=[132645], 99.90th=[278922], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 14, max= 159, per=24.60%, avg=78.97, stdev=27.00, samples=155 iops : min= 3, max= 39, avg=19.12, stdev= 6.77, samples=155 lat (usec) : 50=0.29%, 100=2.15%, 250=1.50%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=3.87%, 4=6.41%, 10=8.43%, 20=24.45%, 50=42.48% lat (msec) : 100=9.31%, 250=0.75%, 500=0.03%, 750=0.07% cpu : usr=0.11%, sys=10.65%, ctx=7548, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=307KiB/s (314kB/s), 76.6KiB/s-77.3KiB/s (78.5kB/s-79.2kB/s), io=23.4MiB (24.6MB), run=77025-78271msec WRITE: bw=321KiB/s (329kB/s), 79.7KiB/s-82.4KiB/s (81.6kB/s-84.4kB/s), io=24.6MiB (25.7MB), run=77025-78271msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147729: Tue Sep 15 10:11:49 2026 read: IOPS=9, BW=38.4KiB/s (39.3kB/s)(5992KiB/156217msec) clat (msec): min=4, max=683, avg=23.53, stdev=26.92 lat (msec): min=4, max=683, avg=23.53, stdev=26.92 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 24], 80.00th=[ 29], 90.00th=[ 46], 95.00th=[ 62], | 99.00th=[ 105], 99.50th=[ 146], 99.90th=[ 245], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 110, per=25.45%, avg=38.93, stdev=23.39, samples=302 iops : min= 1, max= 27, avg= 9.18, stdev= 5.90, samples=302 write: IOPS=10, BW=40.3KiB/s (41.3kB/s)(6296KiB/156217msec); 0 zone resets clat (msec): min=27, max=541, avg=76.65, stdev=37.98 lat (msec): min=27, max=541, avg=76.65, stdev=37.98 clat percentiles (msec): | 1.00th=[ 34], 5.00th=[ 40], 10.00th=[ 44], 20.00th=[ 50], | 30.00th=[ 55], 40.00th=[ 61], 50.00th=[ 67], 60.00th=[ 74], | 70.00th=[ 85], 80.00th=[ 99], 90.00th=[ 120], 95.00th=[ 144], | 99.00th=[ 201], 99.50th=[ 249], 99.90th=[ 401], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7, max= 80, per=24.99%, avg=39.98, stdev=16.24, samples=309 iops : min= 1, max= 20, avg= 9.44, stdev= 4.12, samples=309 lat (msec) : 10=8.79%, 20=20.57%, 50=26.17%, 100=34.28%, 250=9.93% lat (msec) : 500=0.20%, 750=0.07% cpu : usr=0.06%, sys=2.46%, ctx=5760, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147731: Tue Sep 15 10:11:49 2026 read: IOPS=9, BW=38.1KiB/s (38.0kB/s)(5940KiB/156091msec) clat (msec): min=4, max=742, avg=22.84, stdev=28.66 lat (msec): min=4, max=742, avg=22.85, stdev=28.66 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 44], 95.00th=[ 59], | 99.00th=[ 99], 99.50th=[ 127], 99.90th=[ 439], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 111, per=25.34%, avg=38.78, stdev=24.57, samples=300 iops : min= 1, max= 27, avg= 9.14, stdev= 6.17, samples=300 write: IOPS=10, BW=40.7KiB/s (41.6kB/s)(6348KiB/156091msec); 0 zone resets clat (msec): min=30, max=347, avg=76.78, stdev=36.30 lat (msec): min=30, max=347, avg=76.78, stdev=36.30 clat percentiles (msec): | 1.00th=[ 34], 5.00th=[ 40], 10.00th=[ 44], 20.00th=[ 50], | 30.00th=[ 55], 40.00th=[ 61], 50.00th=[ 67], 60.00th=[ 75], | 70.00th=[ 85], 80.00th=[ 99], 90.00th=[ 128], 95.00th=[ 148], | 99.00th=[ 201], 99.50th=[ 249], 99.90th=[ 317], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 72, per=25.27%, avg=40.43, stdev=16.06, samples=307 iops : min= 1, max= 18, avg= 9.55, stdev= 4.11, samples=307 lat (msec) : 10=10.38%, 20=19.63%, 50=26.04%, 100=33.69%, 250=9.96% lat (msec) : 500=0.26%, 750=0.03% cpu : usr=0.06%, sys=2.45%, ctx=5675, 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=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=147733: Tue Sep 15 10:11:49 2026 read: IOPS=9, BW=38.7KiB/s (39.6kB/s)(6028KiB/155737msec) clat (msec): min=5, max=250, avg=23.47, stdev=22.11 lat (msec): min=5, max=250, avg=23.47, stdev=22.11 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 24], 80.00th=[ 31], 90.00th=[ 46], 95.00th=[ 62], | 99.00th=[ 105], 99.50th=[ 163], 99.90th=[ 241], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 7, max= 135, per=25.69%, avg=39.31, stdev=22.65, samples=301 iops : min= 1, max= 33, avg= 9.27, stdev= 5.68, samples=301 write: IOPS=10, BW=40.2KiB/s (41.2kB/s)(6260KiB/155737msec); 0 zone resets clat (msec): min=25, max=814, avg=76.71, stdev=38.34 lat (msec): min=25, max=814, avg=76.72, stdev=38.34 clat percentiles (msec): | 1.00th=[ 35], 5.00th=[ 41], 10.00th=[ 44], 20.00th=[ 51], | 30.00th=[ 56], 40.00th=[ 62], 50.00th=[ 67], 60.00th=[ 74], | 70.00th=[ 85], 80.00th=[ 100], 90.00th=[ 124], 95.00th=[ 146], | 99.00th=[ 184], 99.50th=[ 203], 99.90th=[ 313], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 72, per=24.84%, avg=39.75, stdev=16.10, samples=309 iops : min= 1, max= 18, avg= 9.38, stdev= 4.10, samples=309 lat (msec) : 10=9.05%, 20=20.02%, 50=26.07%, 100=34.18%, 250=10.55% lat (msec) : 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=2.44%, ctx=5574, 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=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=147735: Tue Sep 15 10:11:49 2026 read: IOPS=9, BW=38.0KiB/s (39.9kB/s)(6052KiB/155254msec) clat (msec): min=4, max=269, avg=23.46, stdev=22.58 lat (msec): min=4, max=269, avg=23.46, stdev=22.58 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 21], | 70.00th=[ 24], 80.00th=[ 30], 90.00th=[ 46], 95.00th=[ 63], | 99.00th=[ 118], 99.50th=[ 150], 99.90th=[ 245], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 7, max= 136, per=26.24%, avg=40.15, stdev=23.47, samples=296 iops : min= 1, max= 34, avg= 9.49, stdev= 5.88, samples=296 write: IOPS=10, BW=40.2KiB/s (41.1kB/s)(6236KiB/155254msec); 0 zone resets clat (msec): min=26, max=820, avg=76.61, stdev=41.08 lat (msec): min=26, max=820, avg=76.62, stdev=41.08 clat percentiles (msec): | 1.00th=[ 34], 5.00th=[ 40], 10.00th=[ 44], 20.00th=[ 50], | 30.00th=[ 55], 40.00th=[ 62], 50.00th=[ 67], 60.00th=[ 74], | 70.00th=[ 84], 80.00th=[ 99], 90.00th=[ 120], 95.00th=[ 146], | 99.00th=[ 194], 99.50th=[ 236], 99.90th=[ 542], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 79, per=24.91%, avg=39.86, stdev=16.04, samples=307 iops : min= 1, max= 19, avg= 9.41, stdev= 4.09, samples=307 lat (msec) : 10=9.21%, 20=20.41%, 50=26.07%, 100=34.11%, 250=9.93% lat (msec) : 500=0.20%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=2.51%, ctx=5581, 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=154KiB/s (157kB/s), 38.1KiB/s-38.0KiB/s (38.0kB/s-39.9kB/s), io=23.4MiB (24.6MB), run=155254-156217msec WRITE: bw=161KiB/s (165kB/s), 40.2KiB/s-40.7KiB/s (41.1kB/s-41.6kB/s), io=24.6MiB (25.7MB), run=155254-156217msec 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=147777: Tue Sep 15 10:12:13 2026 read: IOPS=22, BW=354KiB/s (363kB/s)(5920KiB/16713msec) clat (usec): min=31, max=122230, avg=23406.59, stdev=17298.91 lat (usec): min=32, max=122231, avg=23411.96, stdev=17298.90 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 68], 10.00th=[ 93], 20.00th=[ 11338], | 30.00th=[ 16450], 40.00th=[ 19792], 50.00th=[ 23200], 60.00th=[ 26346], | 70.00th=[ 28967], 80.00th=[ 34866], 90.00th=[ 40109], 95.00th=[ 51119], | 99.00th=[ 91751], 99.50th=[112722], 99.90th=[122160], 99.95th=[122160], | 99.99th=[122160] bw ( KiB/s): min= 150, max= 766, per=26.64%, avg=354.88, stdev=130.21, samples=33 iops : min= 9, max= 47, avg=21.52, stdev= 8.14, samples=33 write: IOPS=23, BW=381KiB/s (390kB/s)(6368KiB/16713msec); 0 zone resets clat (usec): min=1700, max=118567, avg=19814.24, stdev=20048.54 lat (usec): min=1703, max=118569, avg=19822.06, stdev=20049.14 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2409], 10.00th=[ 3130], 20.00th=[ 4359], | 30.00th=[ 5735], 40.00th=[ 7504], 50.00th=[ 13566], 60.00th=[ 19006], | 70.00th=[ 22938], 80.00th=[ 33424], 90.00th=[ 48497], 95.00th=[ 56361], | 99.00th=[101188], 99.50th=[116917], 99.90th=[119014], 99.95th=[119014], | 99.99th=[119014] bw ( KiB/s): min= 60, max= 766, per=27.19%, avg=381.21, stdev=153.53, samples=33 iops : min= 3, max= 47, avg=23.15, stdev= 9.66, samples=33 lat (usec) : 50=0.91%, 100=4.43%, 250=3.12%, 500=0.52% lat (msec) : 2=1.04%, 4=7.68%, 10=15.36%, 20=18.88%, 50=41.15% lat (msec) : 100=6.12%, 250=0.78% cpu : usr=0.13%, sys=14.04%, ctx=1811, 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=147778: Tue Sep 15 10:12:13 2026 read: IOPS=19, BW=320KiB/s (327kB/s)(5744KiB/17973msec) clat (usec): min=34, max=91503, avg=22386.21, stdev=16294.49 lat (usec): min=34, max=91504, avg=22387.36, stdev=16294.52 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 74], 10.00th=[ 99], 20.00th=[ 9634], | 30.00th=[14222], 40.00th=[17695], 50.00th=[21103], 60.00th=[24773], | 70.00th=[30016], 80.00th=[34341], 90.00th=[44303], 95.00th=[50594], | 99.00th=[63701], 99.50th=[90702], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 30, max= 605, per=23.92%, avg=318.57, stdev=135.96, samples=35 iops : min= 1, max= 37, avg=19.23, stdev= 8.59, samples=35 write: IOPS=22, BW=364KiB/s (373kB/s)(6544KiB/17973msec); 0 zone resets clat (usec): min=1618, max=249723, avg=23895.02, stdev=27132.64 lat (usec): min=1619, max=249725, avg=23898.96, stdev=27132.05 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2507], 10.00th=[ 3228], 20.00th=[ 4883], | 30.00th=[ 6521], 40.00th=[ 10552], 50.00th=[ 15664], 60.00th=[ 20841], | 70.00th=[ 28181], 80.00th=[ 38536], 90.00th=[ 54264], 95.00th=[ 77071], | 99.00th=[120062], 99.50th=[147850], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 95, max= 640, per=25.70%, avg=360.31, stdev=143.48, samples=35 iops : min= 5, max= 40, avg=21.86, stdev= 9.07, samples=35 lat (usec) : 50=0.65%, 100=4.04%, 250=3.78%, 500=0.13%, 1000=0.26% lat (msec) : 2=1.43%, 4=7.16%, 10=12.63%, 20=23.57%, 50=37.11% lat (msec) : 100=8.20%, 250=1.04% cpu : usr=0.15%, sys=13.19%, ctx=1829, 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=147780: Tue Sep 15 10:12:13 2026 read: IOPS=24, BW=387KiB/s (397kB/s)(6256KiB/16148msec) clat (usec): min=39, max=107695, avg=21089.88, stdev=15369.44 lat (usec): min=39, max=107697, avg=21091.41, stdev=15369.38 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 73], 10.00th=[ 97], 20.00th=[ 245], | 30.00th=[ 14746], 40.00th=[ 17695], 50.00th=[ 20841], 60.00th=[ 24511], | 70.00th=[ 27657], 80.00th=[ 31851], 90.00th=[ 38536], 95.00th=[ 45876], | 99.00th=[ 61604], 99.50th=[ 69731], 99.90th=[107480], 99.95th=[107480], | 99.99th=[107480] bw ( KiB/s): min= 127, max= 608, per=29.17%, avg=388.50, stdev=100.11, samples=32 iops : min= 7, max= 38, avg=23.63, stdev= 6.37, samples=32 write: IOPS=23, BW=374KiB/s (383kB/s)(6032KiB/16148msec); 0 zone resets clat (usec): min=1553, max=198717, avg=20788.48, stdev=20942.44 lat (usec): min=1554, max=198720, avg=20791.35, stdev=20942.59 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2376], 10.00th=[ 3261], 20.00th=[ 4555], | 30.00th=[ 6128], 40.00th=[ 8717], 50.00th=[ 14222], 60.00th=[ 19530], | 70.00th=[ 27132], 80.00th=[ 36439], 90.00th=[ 48497], 95.00th=[ 58983], | 99.00th=[ 82314], 99.50th=[129500], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 159, max= 606, per=26.56%, avg=372.44, stdev=106.31, samples=32 iops : min= 9, max= 37, avg=22.63, stdev= 6.67, samples=32 lat (usec) : 50=0.52%, 100=4.95%, 250=4.82%, 500=0.26%, 1000=0.13% lat (msec) : 2=1.17%, 4=7.03%, 10=13.93%, 20=20.96%, 50=40.23% lat (msec) : 100=5.60%, 250=0.39% cpu : usr=0.14%, sys=14.19%, ctx=1824, 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=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=147781: Tue Sep 15 10:12:13 2026 read: IOPS=21, BW=348KiB/s (357kB/s)(6032KiB/17321msec) clat (usec): min=27, max=145391, avg=23310.35, stdev=18854.40 lat (usec): min=28, max=145394, avg=23312.01, stdev=18854.77 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 73], 10.00th=[ 81], 20.00th=[ 338], | 30.00th=[ 14877], 40.00th=[ 18220], 50.00th=[ 21365], 60.00th=[ 26084], | 70.00th=[ 30278], 80.00th=[ 36439], 90.00th=[ 44827], 95.00th=[ 56361], | 99.00th=[ 77071], 99.50th=[122160], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 90, max= 640, per=26.08%, avg=347.38, stdev=122.55, samples=34 iops : min= 5, max= 40, avg=21.06, stdev= 7.67, samples=34 write: IOPS=22, BW=361KiB/s (370kB/s)(6256KiB/17321msec); 0 zone resets clat (usec): min=1398, max=108611, avg=21437.02, stdev=20940.18 lat (usec): min=1399, max=108613, avg=21439.77, stdev=20939.97 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2409], 10.00th=[ 3359], 20.00th=[ 4948], | 30.00th=[ 6718], 40.00th=[ 9765], 50.00th=[ 14615], 60.00th=[ 20055], | 70.00th=[ 25035], 80.00th=[ 35390], 90.00th=[ 51119], 95.00th=[ 68682], | 99.00th=[ 94897], 99.50th=[108528], 99.90th=[108528], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 120, max= 605, per=25.84%, avg=362.29, stdev=116.88, samples=34 iops : min= 7, max= 37, avg=22.00, stdev= 7.30, samples=34 lat (usec) : 50=0.26%, 100=6.38%, 250=2.73%, 500=0.78%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=1.30%, 4=5.60%, 10=14.19%, 20=21.35%, 50=37.76% lat (msec) : 100=8.85%, 250=0.52% cpu : usr=0.17%, sys=13.50%, ctx=1820, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1333KiB/s (1365kB/s), 320KiB/s-387KiB/s (327kB/s-397kB/s), io=23.4MiB (24.5MB), run=16148-17973msec WRITE: bw=1402KiB/s (1436kB/s), 361KiB/s-381KiB/s (370kB/s-390kB/s), io=24.6MiB (25.8MB), run=16148-17973msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147775: Tue Sep 15 10:12:34 2026 read: IOPS=9, BW=155KiB/s (159kB/s)(5920KiB/38214msec) clat (msec): min=6, max=159, avg=21.81, stdev=21.38 lat (msec): min=6, max=159, avg=21.82, stdev=21.38 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 15], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 43], 95.00th=[ 66], | 99.00th=[ 121], 99.50th=[ 153], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 31, max= 416, per=25.68%, avg=158.99, stdev=81.88, samples=74 iops : min= 1, max= 26, avg= 9.22, stdev= 5.20, samples=74 write: IOPS=10, BW=167KiB/s (171kB/s)(6368KiB/38214msec); 0 zone resets clat (msec): min=25, max=188, avg=75.40, stdev=28.50 lat (msec): min=25, max=188, avg=75.40, stdev=28.50 clat percentiles (msec): | 1.00th=[ 31], 5.00th=[ 39], 10.00th=[ 45], 20.00th=[ 51], | 30.00th=[ 58], 40.00th=[ 65], 50.00th=[ 71], 60.00th=[ 77], | 70.00th=[ 85], 80.00th=[ 97], 90.00th=[ 117], 95.00th=[ 138], | 99.00th=[ 159], 99.50th=[ 163], 99.90th=[ 190], 99.95th=[ 190], | 99.99th=[ 190] bw ( KiB/s): min= 31, max= 287, per=25.52%, avg=166.12, stdev=63.72, samples=76 iops : min= 1, max= 17, avg= 9.67, stdev= 3.98, samples=76 lat (msec) : 10=9.64%, 20=23.70%, 50=20.70%, 100=36.20%, 250=9.77% cpu : usr=0.07%, sys=2.79%, ctx=1430, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147776: Tue Sep 15 10:12:34 2026 read: IOPS=9, BW=149KiB/s (152kB/s)(5744KiB/38666msec) clat (msec): min=6, max=140, avg=21.20, stdev=19.32 lat (msec): min=6, max=140, avg=21.20, stdev=19.32 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 17], | 70.00th=[ 20], 80.00th=[ 28], 90.00th=[ 44], 95.00th=[ 63], | 99.00th=[ 110], 99.50th=[ 126], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 30, max= 480, per=25.13%, avg=155.54, stdev=89.46, samples=72 iops : min= 1, max= 30, avg= 9.01, stdev= 5.62, samples=72 write: IOPS=10, BW=169KiB/s (173kB/s)(6544KiB/38666msec); 0 zone resets clat (msec): min=31, max=245, avg=75.63, stdev=33.23 lat (msec): min=31, max=245, avg=75.64, stdev=33.23 clat percentiles (msec): | 1.00th=[ 34], 5.00th=[ 39], 10.00th=[ 44], 20.00th=[ 51], | 30.00th=[ 58], 40.00th=[ 64], 50.00th=[ 69], 60.00th=[ 74], | 70.00th=[ 84], 80.00th=[ 94], 90.00th=[ 114], 95.00th=[ 136], | 99.00th=[ 211], 99.50th=[ 241], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 63, max= 319, per=25.70%, avg=167.30, stdev=64.63, samples=76 iops : min= 3, max= 19, avg= 9.75, stdev= 4.02, samples=76 lat (msec) : 10=8.98%, 20=23.83%, 50=21.61%, 100=36.46%, 250=9.11% cpu : usr=0.08%, sys=2.78%, ctx=1470, 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=147779: Tue Sep 15 10:12:34 2026 read: IOPS=10, BW=170KiB/s (174kB/s)(6256KiB/36798msec) clat (msec): min=5, max=160, avg=21.73, stdev=19.88 lat (msec): min=5, max=160, avg=21.73, stdev=19.88 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 28], 90.00th=[ 45], 95.00th=[ 62], | 99.00th=[ 111], 99.50th=[ 131], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 31, max= 544, per=28.30%, avg=175.17, stdev=105.56, samples=71 iops : min= 1, max= 34, avg=10.25, stdev= 6.64, samples=71 write: IOPS=10, BW=164KiB/s (168kB/s)(6032KiB/36798msec); 0 zone resets clat (msec): min=28, max=237, avg=74.91, stdev=31.10 lat (msec): min=28, max=237, avg=74.91, stdev=31.09 clat percentiles (msec): | 1.00th=[ 31], 5.00th=[ 41], 10.00th=[ 44], 20.00th=[ 51], | 30.00th=[ 57], 40.00th=[ 63], 50.00th=[ 70], 60.00th=[ 75], | 70.00th=[ 83], 80.00th=[ 94], 90.00th=[ 116], 95.00th=[ 134], | 99.00th=[ 199], 99.50th=[ 226], 99.90th=[ 239], 99.95th=[ 239], | 99.99th=[ 239] bw ( KiB/s): min= 63, max= 288, per=25.09%, avg=163.34, stdev=60.34, samples=73 iops : min= 3, max= 18, avg= 9.51, stdev= 3.78, samples=73 lat (msec) : 10=11.33%, 20=23.96%, 50=21.22%, 100=35.81%, 250=7.68% cpu : usr=0.07%, sys=2.94%, ctx=1368, 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=147782: Tue Sep 15 10:12:34 2026 read: IOPS=9, BW=159KiB/s (163kB/s)(6032KiB/38005msec) clat (msec): min=5, max=164, avg=23.14, stdev=22.60 lat (msec): min=5, max=164, avg=23.14, stdev=22.60 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 21], 80.00th=[ 32], 90.00th=[ 48], 95.00th=[ 69], | 99.00th=[ 133], 99.50th=[ 161], 99.90th=[ 165], 99.95th=[ 165], | 99.99th=[ 165] bw ( KiB/s): min= 31, max= 479, per=25.33%, avg=156.81, stdev=91.82, samples=75 iops : min= 1, max= 29, avg= 9.09, stdev= 5.73, samples=75 write: IOPS=10, BW=165KiB/s (169kB/s)(6256KiB/38005msec); 0 zone resets clat (msec): min=25, max=220, avg=74.53, stdev=30.10 lat (msec): min=25, max=220, avg=74.54, stdev=30.10 clat percentiles (msec): | 1.00th=[ 33], 5.00th=[ 40], 10.00th=[ 45], 20.00th=[ 51], | 30.00th=[ 57], 40.00th=[ 62], 50.00th=[ 67], 60.00th=[ 74], | 70.00th=[ 85], 80.00th=[ 94], 90.00th=[ 114], 95.00th=[ 140], | 99.00th=[ 171], 99.50th=[ 194], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 63, max= 287, per=25.14%, avg=163.67, stdev=61.90, samples=75 iops : min= 3, max= 17, avg= 9.52, stdev= 3.86, samples=75 lat (msec) : 10=8.59%, 20=25.65%, 50=20.05%, 100=36.72%, 250=8.98% cpu : usr=0.07%, sys=2.83%, ctx=1477, 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=619KiB/s (634kB/s), 149KiB/s-170KiB/s (152kB/s-174kB/s), io=23.4MiB (24.5MB), run=36798-38666msec WRITE: bw=652KiB/s (667kB/s), 164KiB/s-169KiB/s (168kB/s-173kB/s), io=24.6MiB (25.8MB), run=36798-38666msec 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=147798: Tue Sep 15 10:12:45 2026 read: IOPS=2, BW=2392KiB/s (2449kB/s)(7168KiB/2997msec) clat (msec): min=120, max=229, avg=185.54, stdev=37.85 lat (msec): min=120, max=229, avg=185.54, stdev=37.85 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 153], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 194], 60.00th=[ 209], | 70.00th=[ 209], 80.00th=[ 213], 90.00th=[ 230], 95.00th=[ 230], | 99.00th=[ 230], 99.50th=[ 230], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 1939, max= 4308, per=41.92%, avg=2584.50, stdev=1150.10, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=1, BW=1708KiB/s (1749kB/s)(5120KiB/2997msec); 0 zone resets clat (msec): min=167, max=739, avg=339.29, stdev=232.48 lat (msec): min=167, max=739, avg=339.36, stdev=232.47 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 251], 60.00th=[ 251], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 2043, max= 3878, per=30.77%, avg=2656.33, stdev=1058.00, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 250=75.00%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=30.07%, ctx=359, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147799: Tue Sep 15 10:12:45 2026 read: IOPS=0, BW=620KiB/s (635kB/s)(2048KiB/3305msec) clat (usec): min=745, max=159080, avg=79913.12, stdev=111959.62 lat (usec): min=746, max=159082, avg=79914.86, stdev=111960.29 clat percentiles (usec): | 1.00th=[ 750], 5.00th=[ 750], 10.00th=[ 750], 20.00th=[ 750], | 30.00th=[ 750], 40.00th=[ 750], 50.00th=[ 750], 60.00th=[158335], | 70.00th=[158335], 80.00th=[158335], 90.00th=[158335], 95.00th=[158335], | 99.00th=[158335], 99.50th=[158335], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 1452, max= 2043, per=28.34%, avg=1747.50, stdev=417.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3098KiB/s (3173kB/s)(10.0MiB/3305msec); 0 zone resets clat (msec): min=185, max=848, avg=313.91, stdev=197.54 lat (msec): min=185, max=848, avg=314.31, stdev=197.40 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 207], | 30.00th=[ 220], 40.00th=[ 224], 50.00th=[ 239], 60.00th=[ 239], | 70.00th=[ 275], 80.00th=[ 309], 90.00th=[ 397], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 2048, max= 4087, per=39.58%, avg=3417.00, stdev=911.16, samples=5 iops : min= 2, max= 3, avg= 2.60, stdev= 0.55, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=58.33%, 500=25.00%, 1000=8.33% cpu : usr=0.03%, sys=31.39%, ctx=154, 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=147800: Tue Sep 15 10:12:45 2026 read: IOPS=1, BW=1850KiB/s (1894kB/s)(6144KiB/3321msec) clat (usec): min=577, max=353333, avg=145700.16, stdev=165433.45 lat (usec): min=578, max=353334, avg=145701.20, stdev=165433.47 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 578], 10.00th=[ 578], 20.00th=[ 594], | 30.00th=[ 594], 40.00th=[ 2343], 50.00th=[ 2343], 60.00th=[206570], | 70.00th=[312476], 80.00th=[312476], 90.00th=[354419], 95.00th=[354419], | 99.00th=[354419], 99.50th=[354419], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 1939, max= 4015, per=40.59%, avg=2503.00, stdev=1008.96, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1850KiB/s (1894kB/s)(6144KiB/3321msec); 0 zone resets clat (msec): min=195, max=911, avg=407.59, stdev=257.86 lat (msec): min=195, max=911, avg=407.65, stdev=257.87 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 372], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1939, max= 4031, per=31.35%, avg=2706.50, stdev=965.22, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=16.67% lat (msec) : 4=8.33%, 250=25.00%, 500=41.67%, 1000=8.33% cpu : usr=0.09%, sys=23.46%, ctx=269, 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=147801: Tue Sep 15 10:12:45 2026 read: IOPS=1, BW=1606KiB/s (1645kB/s)(5120KiB/3188msec) clat (usec): min=368, max=414955, avg=124056.55, stdev=184966.60 lat (usec): min=368, max=414959, avg=124058.13, stdev=184967.64 clat percentiles (usec): | 1.00th=[ 367], 5.00th=[ 367], 10.00th=[ 367], 20.00th=[ 367], | 30.00th=[ 408], 40.00th=[ 408], 50.00th=[ 562], 60.00th=[ 562], | 70.00th=[204473], 80.00th=[204473], 90.00th=[413139], 95.00th=[413139], | 99.00th=[413139], 99.50th=[413139], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 2043, max= 6023, per=65.41%, avg=4033.00, stdev=2814.28, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2248KiB/s (2302kB/s)(7168KiB/3188msec); 0 zone resets clat (msec): min=83, max=669, avg=366.02, stdev=227.25 lat (msec): min=83, max=669, avg=366.09, stdev=227.24 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 218], | 30.00th=[ 222], 40.00th=[ 222], 50.00th=[ 257], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 625], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1398, max= 2048, per=21.86%, avg=1887.00, stdev=276.80, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=23.03%, ctx=211, 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=6167KiB/s (6315kB/s), 620KiB/s-2392KiB/s (635kB/s-2449kB/s), io=20.0MiB (20.0MB), run=2997-3321msec WRITE: bw=8634KiB/s (8841kB/s), 1708KiB/s-3098KiB/s (1749kB/s-3173kB/s), io=28.0MiB (29.4MB), run=2997-3321msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147793: Tue Sep 15 10:12:45 2026 read: IOPS=2, BW=2557KiB/s (2619kB/s)(7168KiB/2803msec) clat (msec): min=56, max=365, avg=170.45, stdev=133.50 lat (msec): min=56, max=365, avg=170.45, stdev=133.50 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 78], | 30.00th=[ 87], 40.00th=[ 87], 50.00th=[ 110], 60.00th=[ 140], | 70.00th=[ 140], 80.00th=[ 359], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 1996, max= 5398, per=74.30%, avg=3824.33, stdev=1715.24, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1827KiB/s (1870kB/s)(5120KiB/2803msec); 0 zone resets clat (msec): min=224, max=483, avg=317.26, stdev=101.21 lat (msec): min=224, max=483, avg=317.32, stdev=101.21 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 262], 40.00th=[ 262], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 1996, max= 4087, per=35.11%, avg=2529.50, stdev=1038.53, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=25.00%, 250=25.00%, 500=50.00% cpu : usr=0.00%, sys=8.35%, ctx=139, 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=147794: Tue Sep 15 10:12:45 2026 read: IOPS=0, BW=515KiB/s (527kB/s)(2048KiB/3979msec) clat (msec): min=78, max=398, avg=238.63, stdev=225.77 lat (msec): min=78, max=398, avg=238.63, stdev=225.77 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 80], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 80], 60.00th=[ 397], | 70.00th=[ 397], 80.00th=[ 397], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 1848, max= 2039, per=37.76%, avg=1943.50, stdev=135.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2574KiB/s (2635kB/s)(10.0MiB/3979msec); 0 zone resets clat (msec): min=105, max=691, avg=345.58, stdev=223.64 lat (msec): min=105, max=691, avg=345.67, stdev=223.66 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 117], | 30.00th=[ 136], 40.00th=[ 161], 50.00th=[ 262], 60.00th=[ 405], | 70.00th=[ 443], 80.00th=[ 464], 90.00th=[ 676], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1848, max= 4079, per=32.49%, avg=2340.67, stdev=854.86, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=16.67% cpu : usr=0.00%, sys=8.65%, ctx=174, 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=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=147795: Tue Sep 15 10:12:45 2026 read: IOPS=1, BW=1556KiB/s (1593kB/s)(6144KiB/3949msec) clat (msec): min=49, max=878, avg=272.13, stdev=311.08 lat (msec): min=49, max=878, avg=272.14, stdev=311.08 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 50], 10.00th=[ 50], 20.00th=[ 59], | 30.00th=[ 59], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 201], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1996, max= 3992, per=51.98%, avg=2675.67, stdev=1140.18, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1556KiB/s (1593kB/s)(6144KiB/3949msec); 0 zone resets clat (msec): min=119, max=816, avg=376.90, stdev=255.00 lat (msec): min=119, max=816, avg=377.03, stdev=255.03 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 430], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1796, max= 2043, per=27.32%, avg=1968.50, stdev=116.95, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=33.33%, 1000=16.67% cpu : usr=0.00%, sys=6.89%, ctx=102, 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=147796: Tue Sep 15 10:12:45 2026 read: IOPS=1, BW=1825KiB/s (1868kB/s)(5120KiB/2806msec) clat (msec): min=84, max=167, avg=130.27, stdev=33.81 lat (msec): min=84, max=167, avg=130.27, stdev=33.81 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 86], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 142], 60.00th=[ 142], | 70.00th=[ 150], 80.00th=[ 150], 90.00th=[ 167], 95.00th=[ 167], | 99.00th=[ 167], 99.50th=[ 167], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2555KiB/s (2616kB/s)(7168KiB/2806msec); 0 zone resets clat (msec): min=135, max=713, avg=299.83, stdev=202.07 lat (msec): min=135, max=714, avg=300.76, stdev=202.63 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 142], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 236], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 376], 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= 1812, max= 6119, per=55.16%, avg=3974.33, stdev=2153.55, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 lat (msec) : 100=8.33%, 250=66.67%, 500=16.67%, 750=8.33% cpu : usr=0.04%, sys=8.31%, ctx=85, 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=5147KiB/s (5271kB/s), 515KiB/s-2557KiB/s (527kB/s-2619kB/s), io=20.0MiB (20.0MB), run=2803-3979msec WRITE: bw=7206KiB/s (7379kB/s), 1556KiB/s-2574KiB/s (1593kB/s-2635kB/s), io=28.0MiB (29.4MB), run=2803-3979msec 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=147812: Tue Sep 15 10:12:55 2026 read: IOPS=1, BW=6331KiB/s (6483kB/s)(12.0MiB/1941msec) clat (msec): min=541, max=706, avg=618.81, stdev=82.82 lat (msec): min=541, max=706, avg=618.81, stdev=82.82 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7984, max= 8192, per=100.00%, avg=8088.00, stdev=147.08, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=34.74%, ctx=572, 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=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=147813: Tue Sep 15 10:12:55 2026 read: IOPS=0, BW=1909KiB/s (1954kB/s)(4096KiB/2146msec) clat (nsec): min=523284k, max=523284k, avg=523284406.00, stdev= 0.00 lat (nsec): min=523288k, max=523288k, avg=523287583.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3817KiB/s (3909kB/s)(8192KiB/2146msec); 0 zone resets clat (msec): min=453, max=1078, avg=765.68, stdev=441.93 lat (msec): min=453, max=1078, avg=766.07, stdev=441.87 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8192, max= 8192, per=62.73%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=8.90%, ctx=238, 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=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=147814: Tue Sep 15 10:12:55 2026 write: IOPS=1, BW=4898KiB/s (5015kB/s)(12.0MiB/2509msec); 0 zone resets clat (msec): min=210, max=1233, avg=819.92, stdev=538.78 lat (msec): min=211, max=1234, avg=820.68, stdev=538.36 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1020], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7984, max= 7984, per=61.13%, avg=7984.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.04%, sys=6.34%, ctx=55, 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=147815: Tue Sep 15 10:12:55 2026 write: IOPS=1, BW=6682KiB/s (6842kB/s)(12.0MiB/1839msec); 0 zone resets clat (msec): min=344, max=938, avg=582.73, stdev=314.15 lat (msec): min=345, max=939, avg=583.03, stdev=314.15 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 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= 6803, max= 7984, per=56.61%, avg=7393.50, stdev=835.09, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.05%, sys=18.99%, ctx=83, 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=7635KiB/s (7818kB/s), 1909KiB/s-6331KiB/s (1954kB/s-6483kB/s), io=16.0MiB (16.8MB), run=1941-2146msec WRITE: bw=12.8MiB/s (13.4MB/s), 3817KiB/s-6682KiB/s (3909kB/s-6842kB/s), io=32.0MiB (33.6MB), run=1839-2509msec rand-rw: (groupid=0, jobs=1): err= 0: pid=147807: Tue Sep 15 10:12:55 2026 read: IOPS=2, BW=11.9MiB/s (12.5MB/s)(12.0MiB/1007msec) clat (msec): min=225, max=420, avg=311.51, stdev=99.81 lat (msec): min=225, max=420, avg=311.51, stdev=99.81 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 5970, max= 5970, per=97.74%, avg=5970.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=66.67% cpu : usr=0.00%, sys=19.18%, ctx=83, 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=147808: Tue Sep 15 10:12:55 2026 read: IOPS=0, BW=1527KiB/s (1564kB/s)(4096KiB/2682msec) clat (nsec): min=866493k, max=866493k, avg=866493352.00, stdev= 0.00 lat (nsec): min=866494k, max=866494k, avg=866494441.00, stdev= 0.00 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=[ 869], | 70.00th=[ 869], 80.00th=[ 869], 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= 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=3054KiB/s (3128kB/s)(8192KiB/2682msec); 0 zone resets clat (msec): min=627, max=1119, avg=873.81, stdev=347.83 lat (msec): min=628, max=1120, avg=874.19, stdev=347.72 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=[ 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= 8175, max= 8175, per=66.91%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=7.94%, ctx=74, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=147809: Tue Sep 15 10:12:55 2026 write: IOPS=1, BW=5222KiB/s (5348kB/s)(12.0MiB/2353msec); 0 zone resets clat (msec): min=267, max=1181, avg=756.69, stdev=460.59 lat (msec): min=267, max=1182, avg=757.67, stdev=461.06 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 818], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8175, max= 8192, per=66.98%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=11.48%, ctx=81, 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=147810: Tue Sep 15 10:12:55 2026 write: IOPS=1, BW=7336KiB/s (7512kB/s)(12.0MiB/1675msec); 0 zone resets clat (msec): min=279, max=745, avg=530.50, stdev=235.25 lat (msec): min=279, max=745, avg=530.86, stdev=235.13 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 743], 80.00th=[ 743], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 5885, max= 8078, per=57.15%, avg=6981.50, stdev=1550.69, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=12.60%, ctx=53, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=6109KiB/s (6255kB/s), 1527KiB/s-11.9MiB/s (1564kB/s-12.5MB/s), io=16.0MiB (16.8MB), run=1007-2682msec WRITE: bw=11.9MiB/s (12.5MB/s), 3054KiB/s-7336KiB/s (3128kB/s-7512kB/s), io=32.0MiB (33.6MB), run=1675-2682msec