== sanity test 398b: DIO and buffer IO race ============== 16:52:38 (1786654358) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.47608 s, 9.2 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=179424: Thu Aug 13 16:55:11 2026 read: IOPS=11, BW=44.2KiB/s (45.3kB/s)(5992KiB/135421msec) clat (usec): min=33, max=328567, avg=50788.52, stdev=35705.82 lat (usec): min=33, max=328569, avg=50789.79, stdev=35705.78 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 12649], 10.00th=[ 17695], 20.00th=[ 24249], | 30.00th=[ 30540], 40.00th=[ 36963], 50.00th=[ 42730], 60.00th=[ 49546], | 70.00th=[ 58983], 80.00th=[ 70779], 90.00th=[ 94897], 95.00th=[120062], | 99.00th=[179307], 99.50th=[214959], 99.90th=[270533], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 7, max= 103, per=24.86%, avg=43.75, stdev=18.30, samples=265 iops : min= 1, max= 25, avg=10.29, stdev= 4.65, samples=265 write: IOPS=11, BW=46.5KiB/s (47.6kB/s)(6296KiB/135421msec); 0 zone resets clat (usec): min=867, max=780801, avg=37432.75, stdev=41880.28 lat (usec): min=868, max=780802, avg=37436.34, stdev=41878.86 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1352], 10.00th=[ 1647], 20.00th=[ 4047], | 30.00th=[ 8979], 40.00th=[ 17695], 50.00th=[ 26608], 60.00th=[ 35914], | 70.00th=[ 47973], 80.00th=[ 64226], 90.00th=[ 88605], 95.00th=[112722], | 99.00th=[164627], 99.50th=[183501], 99.90th=[235930], 99.95th=[784335], | 99.99th=[784335] bw ( KiB/s): min= 7, max= 127, per=25.21%, avg=46.39, stdev=21.73, samples=263 iops : min= 1, max= 31, avg=10.96, stdev= 5.46, samples=263 lat (usec) : 50=0.26%, 100=1.11%, 250=0.16%, 500=0.03%, 1000=0.03% lat (msec) : 2=5.96%, 4=4.07%, 10=6.35%, 20=10.06%, 50=38.31% lat (msec) : 100=26.04%, 250=7.52%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=5.07%, ctx=6577, 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=179426: Thu Aug 13 16:55:11 2026 read: IOPS=10, BW=43.7KiB/s (44.8kB/s)(5940KiB/135910msec) clat (usec): min=44, max=409093, avg=50061.03, stdev=35967.84 lat (usec): min=45, max=409095, avg=50062.86, stdev=35967.63 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 13960], 10.00th=[ 18220], 20.00th=[ 24249], | 30.00th=[ 29754], 40.00th=[ 35914], 50.00th=[ 41681], 60.00th=[ 48497], | 70.00th=[ 57410], 80.00th=[ 70779], 90.00th=[ 91751], 95.00th=[117965], | 99.00th=[173016], 99.50th=[202376], 99.90th=[383779], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 7, max= 112, per=24.66%, avg=43.40, stdev=19.34, samples=265 iops : min= 1, max= 28, avg=10.21, stdev= 4.89, samples=265 write: IOPS=11, BW=46.7KiB/s (47.8kB/s)(6348KiB/135910msec); 0 zone resets clat (usec): min=1068, max=824428, avg=38502.12, stdev=45260.76 lat (usec): min=1070, max=824430, avg=38503.74, stdev=45260.87 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1319], 10.00th=[ 1500], 20.00th=[ 3884], | 30.00th=[ 8455], 40.00th=[ 17171], 50.00th=[ 26346], 60.00th=[ 36439], | 70.00th=[ 49021], 80.00th=[ 66323], 90.00th=[ 88605], 95.00th=[117965], | 99.00th=[181404], 99.50th=[235930], 99.90th=[287310], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 7, max= 119, per=25.31%, avg=46.57, stdev=23.50, samples=264 iops : min= 1, max= 29, avg=11.00, stdev= 5.93, samples=264 lat (usec) : 50=0.26%, 100=0.94%, 250=0.03%, 500=0.07%, 750=0.03% lat (msec) : 2=6.67%, 4=3.81%, 10=6.41%, 20=9.86%, 50=38.41% lat (msec) : 100=25.59%, 250=7.68%, 500=0.20%, 1000=0.03% cpu : usr=0.07%, sys=4.97%, ctx=6412, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179429: Thu Aug 13 16:55:11 2026 read: IOPS=11, BW=45.7KiB/s (46.7kB/s)(6028KiB/132044msec) clat (usec): min=35, max=413456, avg=48943.89, stdev=37361.46 lat (usec): min=35, max=413457, avg=48947.61, stdev=37360.57 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10290], 10.00th=[ 16188], 20.00th=[ 22938], | 30.00th=[ 28181], 40.00th=[ 34341], 50.00th=[ 41157], 60.00th=[ 47973], | 70.00th=[ 56886], 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[111674], | 99.00th=[193987], 99.50th=[233833], 99.90th=[316670], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 7, max= 127, per=25.73%, avg=45.28, stdev=20.57, samples=258 iops : min= 1, max= 31, avg=10.68, stdev= 5.17, samples=258 write: IOPS=11, BW=47.4KiB/s (48.5kB/s)(6260KiB/132044msec); 0 zone resets clat (usec): min=923, max=803748, avg=37006.46, stdev=42862.72 lat (usec): min=924, max=803750, avg=37009.03, stdev=42862.65 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1352], 10.00th=[ 1549], 20.00th=[ 4178], | 30.00th=[ 8160], 40.00th=[ 16712], 50.00th=[ 25035], 60.00th=[ 34866], | 70.00th=[ 46400], 80.00th=[ 63701], 90.00th=[ 89654], 95.00th=[116917], | 99.00th=[162530], 99.50th=[177210], 99.90th=[325059], 99.95th=[801113], | 99.99th=[801113] bw ( KiB/s): min= 5, max= 112, per=25.53%, avg=46.97, stdev=23.01, samples=258 iops : min= 1, max= 28, avg=11.10, stdev= 5.82, samples=258 lat (usec) : 50=0.29%, 100=1.60%, 250=0.16%, 1000=0.13% lat (msec) : 2=6.71%, 4=3.22%, 10=7.10%, 20=10.29%, 50=38.38% lat (msec) : 100=24.71%, 250=7.16%, 500=0.23%, 1000=0.03% cpu : usr=0.07%, sys=4.97%, ctx=6269, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179430: Thu Aug 13 16:55:11 2026 read: IOPS=11, BW=45.3KiB/s (46.3kB/s)(6052KiB/133738msec) clat (usec): min=37, max=431087, avg=47641.57, stdev=34944.30 lat (usec): min=37, max=431088, avg=47643.51, stdev=34943.91 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 10945], 10.00th=[ 17171], 20.00th=[ 22152], | 30.00th=[ 28443], 40.00th=[ 33817], 50.00th=[ 39584], 60.00th=[ 46400], | 70.00th=[ 54789], 80.00th=[ 66323], 90.00th=[ 89654], 95.00th=[110625], | 99.00th=[183501], 99.50th=[204473], 99.90th=[235930], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 7, max= 135, per=25.97%, avg=45.71, stdev=20.13, samples=258 iops : min= 1, max= 33, avg=10.78, stdev= 5.07, samples=258 write: IOPS=11, BW=46.6KiB/s (47.7kB/s)(6236KiB/133738msec); 0 zone resets clat (usec): min=1013, max=830367, avg=39294.34, stdev=45364.56 lat (usec): min=1014, max=830369, avg=39298.95, stdev=45365.68 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1336], 10.00th=[ 1598], 20.00th=[ 4228], | 30.00th=[ 8717], 40.00th=[ 18220], 50.00th=[ 26870], 60.00th=[ 36439], | 70.00th=[ 49021], 80.00th=[ 66323], 90.00th=[ 96994], 95.00th=[122160], | 99.00th=[179307], 99.50th=[200279], 99.90th=[308282], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 7, max= 127, per=25.16%, avg=46.30, stdev=24.62, samples=262 iops : min= 1, max= 31, avg=10.93, stdev= 6.23, samples=262 lat (usec) : 50=0.20%, 100=1.37%, 250=0.26%, 500=0.03%, 1000=0.03% lat (msec) : 2=6.05%, 4=3.87%, 10=6.45%, 20=10.35%, 50=39.16% lat (msec) : 100=24.19%, 250=7.94%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=4.82%, ctx=6512, 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=177KiB/s (181kB/s), 43.7KiB/s-45.7KiB/s (44.8kB/s-46.7kB/s), io=23.4MiB (24.6MB), run=132044-135910msec WRITE: bw=185KiB/s (189kB/s), 46.5KiB/s-47.4KiB/s (47.6kB/s-48.5kB/s), io=24.6MiB (25.7MB), run=132044-135910msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179423: Thu Aug 13 16:55:52 2026 read: IOPS=8, BW=34.1KiB/s (34.9kB/s)(5992KiB/175686msec) clat (msec): min=5, max=843, avg=45.82, stdev=48.02 lat (msec): min=5, max=843, avg=45.82, stdev=48.02 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 48], 80.00th=[ 64], 90.00th=[ 99], 95.00th=[ 134], | 99.00th=[ 220], 99.50th=[ 284], 99.90th=[ 330], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 168, per=25.79%, avg=35.08, stdev=26.01, samples=331 iops : min= 1, max= 42, avg= 8.09, stdev= 6.55, samples=331 write: IOPS=8, BW=35.8KiB/s (36.7kB/s)(6296KiB/175686msec); 0 zone resets clat (msec): min=10, max=434, avg=67.77, stdev=51.81 lat (msec): min=10, max=434, avg=67.77, stdev=51.81 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 51], 60.00th=[ 62], | 70.00th=[ 77], 80.00th=[ 99], 90.00th=[ 136], 95.00th=[ 171], | 99.00th=[ 266], 99.50th=[ 305], 99.90th=[ 359], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 7, max= 127, per=25.31%, avg=35.95, stdev=23.11, samples=339 iops : min= 1, max= 31, avg= 8.31, stdev= 5.82, samples=339 lat (msec) : 10=2.44%, 20=13.67%, 50=44.82%, 100=24.48%, 250=13.57% lat (msec) : 500=0.98%, 1000=0.03% cpu : usr=0.07%, sys=2.01%, ctx=4794, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179425: Thu Aug 13 16:55:52 2026 read: IOPS=8, BW=33.7KiB/s (34.5kB/s)(5940KiB/176475msec) clat (msec): min=5, max=821, avg=46.67, stdev=48.02 lat (msec): min=5, max=821, avg=46.67, stdev=48.02 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 49], 80.00th=[ 66], 90.00th=[ 102], 95.00th=[ 136], | 99.00th=[ 213], 99.50th=[ 249], 99.90th=[ 409], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 166, per=25.28%, avg=34.39, stdev=24.81, samples=335 iops : min= 1, max= 41, avg= 7.92, stdev= 6.24, samples=335 write: IOPS=8, BW=35.0KiB/s (36.8kB/s)(6348KiB/176475msec); 0 zone resets clat (msec): min=10, max=365, avg=67.28, stdev=50.17 lat (msec): min=10, max=365, avg=67.28, stdev=50.17 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 52], 60.00th=[ 62], | 70.00th=[ 78], 80.00th=[ 101], 90.00th=[ 138], 95.00th=[ 171], | 99.00th=[ 236], 99.50th=[ 288], 99.90th=[ 334], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7, max= 112, per=25.25%, avg=35.85, stdev=23.14, samples=343 iops : min= 1, max= 28, avg= 8.29, stdev= 5.84, samples=343 lat (msec) : 10=1.56%, 20=14.94%, 50=43.16%, 100=25.03%, 250=14.62% lat (msec) : 500=0.65%, 1000=0.03% cpu : usr=0.06%, sys=1.89%, ctx=4716, 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=179427: Thu Aug 13 16:55:52 2026 read: IOPS=8, BW=34.2KiB/s (35.0kB/s)(6028KiB/176246msec) clat (msec): min=5, max=422, avg=45.32, stdev=40.14 lat (msec): min=5, max=422, avg=45.32, stdev=40.14 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 66], 90.00th=[ 97], 95.00th=[ 130], | 99.00th=[ 190], 99.50th=[ 213], 99.90th=[ 249], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 135, per=25.31%, avg=34.42, stdev=24.86, samples=339 iops : min= 1, max= 33, avg= 7.93, stdev= 6.28, samples=339 write: IOPS=8, BW=35.5KiB/s (36.4kB/s)(6260KiB/176246msec); 0 zone resets clat (msec): min=10, max=840, avg=68.73, stdev=56.82 lat (msec): min=10, max=840, avg=68.73, stdev=56.82 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 62], | 70.00th=[ 78], 80.00th=[ 101], 90.00th=[ 140], 95.00th=[ 176], | 99.00th=[ 275], 99.50th=[ 313], 99.90th=[ 405], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 150, per=24.91%, avg=35.38, stdev=23.59, samples=342 iops : min= 1, max= 37, avg= 8.17, stdev= 5.93, samples=342 lat (msec) : 10=2.08%, 20=13.61%, 50=45.28%, 100=24.09%, 250=14.00% lat (msec) : 500=0.91%, 1000=0.03% cpu : usr=0.05%, sys=1.96%, ctx=4709, 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=179428: Thu Aug 13 16:55:52 2026 read: IOPS=8, BW=34.3KiB/s (35.1kB/s)(6052KiB/176457msec) clat (msec): min=5, max=417, avg=46.03, stdev=43.64 lat (msec): min=5, max=417, avg=46.03, stdev=43.64 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 67], 90.00th=[ 101], 95.00th=[ 138], | 99.00th=[ 203], 99.50th=[ 257], 99.90th=[ 388], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7, max= 151, per=26.26%, avg=35.72, stdev=25.06, samples=329 iops : min= 1, max= 37, avg= 8.26, stdev= 6.31, samples=329 write: IOPS=8, BW=35.3KiB/s (36.2kB/s)(6236KiB/176457msec); 0 zone resets clat (msec): min=10, max=834, avg=68.26, stdev=56.17 lat (msec): min=10, max=834, avg=68.26, stdev=56.17 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 51], 60.00th=[ 62], | 70.00th=[ 78], 80.00th=[ 99], 90.00th=[ 133], 95.00th=[ 176], | 99.00th=[ 275], 99.50th=[ 317], 99.90th=[ 439], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7, max= 142, per=25.07%, avg=35.61, stdev=23.36, samples=340 iops : min= 1, max= 35, avg= 8.23, stdev= 5.89, samples=340 lat (msec) : 10=1.82%, 20=14.65%, 50=44.43%, 100=24.32%, 250=13.87% lat (msec) : 500=0.88%, 1000=0.03% cpu : usr=0.05%, sys=1.90%, ctx=4822, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=136KiB/s (139kB/s), 33.7KiB/s-34.3KiB/s (34.5kB/s-35.1kB/s), io=23.4MiB (24.6MB), run=175686-176475msec WRITE: bw=142KiB/s (146kB/s), 35.3KiB/s-35.0KiB/s (36.2kB/s-36.8kB/s), io=24.6MiB (25.7MB), run=175686-176475msec 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=179478: Thu Aug 13 16:56:30 2026 read: IOPS=13, BW=211KiB/s (216kB/s)(5920KiB/28001msec) clat (usec): min=39, max=161421, avg=39890.32, stdev=25013.35 lat (usec): min=39, max=161422, avg=39896.77, stdev=25009.03 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 67], 10.00th=[ 1221], 20.00th=[ 22152], | 30.00th=[ 28443], 40.00th=[ 32375], 50.00th=[ 37487], 60.00th=[ 42206], | 70.00th=[ 47973], 80.00th=[ 54264], 90.00th=[ 70779], 95.00th=[ 81265], | 99.00th=[124257], 99.50th=[137364], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 63, max= 384, per=24.81%, avg=211.84, stdev=71.42, samples=55 iops : min= 3, max= 24, avg=12.47, stdev= 4.53, samples=55 write: IOPS=14, BW=227KiB/s (233kB/s)(6368KiB/28001msec); 0 zone resets clat (usec): min=1276, max=160853, avg=32865.79, stdev=31277.78 lat (usec): min=1278, max=160854, avg=32871.33, stdev=31276.78 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2180], 10.00th=[ 3228], 20.00th=[ 5932], | 30.00th=[ 9765], 40.00th=[ 16909], 50.00th=[ 23987], 60.00th=[ 31589], | 70.00th=[ 41157], 80.00th=[ 56886], 90.00th=[ 76022], 95.00th=[ 98042], | 99.00th=[133694], 99.50th=[158335], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 95, max= 478, per=25.35%, avg=227.87, stdev=85.89, samples=55 iops : min= 5, max= 29, avg=13.49, stdev= 5.37, samples=55 lat (usec) : 50=0.26%, 100=4.04%, 250=0.26%, 750=0.13% lat (msec) : 2=2.34%, 4=4.56%, 10=9.11%, 20=10.16%, 50=44.27% lat (msec) : 100=21.09%, 250=3.78% cpu : usr=0.07%, sys=6.23%, ctx=1684, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179479: Thu Aug 13 16:56:30 2026 read: IOPS=13, BW=218KiB/s (223kB/s)(5744KiB/26376msec) clat (usec): min=43, max=145212, avg=39079.16, stdev=23307.12 lat (usec): min=43, max=145213, avg=39080.51, stdev=23307.14 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 68], 10.00th=[ 13173], 20.00th=[ 21627], | 30.00th=[ 26870], 40.00th=[ 32375], 50.00th=[ 35914], 60.00th=[ 41681], | 70.00th=[ 46924], 80.00th=[ 55837], 90.00th=[ 67634], 95.00th=[ 80217], | 99.00th=[117965], 99.50th=[132645], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 31, max= 384, per=25.52%, avg=217.94, stdev=76.94, samples=52 iops : min= 1, max= 24, avg=12.85, stdev= 4.86, samples=52 write: IOPS=15, BW=248KiB/s (254kB/s)(6544KiB/26376msec); 0 zone resets clat (usec): min=1283, max=185935, avg=29708.78, stdev=27484.58 lat (usec): min=1285, max=185937, avg=29732.82, stdev=27505.47 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1909], 10.00th=[ 2900], 20.00th=[ 5342], | 30.00th=[ 9634], 40.00th=[ 16319], 50.00th=[ 23725], 60.00th=[ 29754], | 70.00th=[ 39584], 80.00th=[ 49021], 90.00th=[ 67634], 95.00th=[ 78119], | 99.00th=[121111], 99.50th=[137364], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 128, max= 448, per=27.57%, avg=247.85, stdev=71.67, samples=52 iops : min= 8, max= 28, avg=14.73, stdev= 4.55, samples=52 lat (usec) : 50=0.39%, 100=2.86%, 250=0.26%, 1000=0.13% lat (msec) : 2=3.26%, 4=4.82%, 10=8.46%, 20=11.72%, 50=46.48% lat (msec) : 100=19.27%, 250=2.34% cpu : usr=0.08%, sys=7.09%, ctx=1713, 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=179480: Thu Aug 13 16:56:30 2026 read: IOPS=13, BW=223KiB/s (229kB/s)(6256KiB/28019msec) clat (usec): min=36, max=142957, avg=40644.40, stdev=24785.74 lat (usec): min=36, max=142958, avg=40658.66, stdev=24787.98 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 66], 10.00th=[ 15270], 20.00th=[ 21890], | 30.00th=[ 27132], 40.00th=[ 31065], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 50070], 80.00th=[ 60031], 90.00th=[ 77071], 95.00th=[ 87557], | 99.00th=[107480], 99.50th=[116917], 99.90th=[143655], 99.95th=[143655], | 99.99th=[143655] bw ( KiB/s): min= 63, max= 382, per=26.22%, avg=223.95, stdev=62.51, samples=55 iops : min= 3, max= 23, avg=13.22, stdev= 3.97, samples=55 write: IOPS=13, BW=215KiB/s (220kB/s)(6032KiB/28019msec); 0 zone resets clat (usec): min=1643, max=192362, avg=32015.47, stdev=28837.83 lat (usec): min=1644, max=192363, avg=32017.77, stdev=28837.84 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2008], 10.00th=[ 2999], 20.00th=[ 6652], | 30.00th=[ 11600], 40.00th=[ 17957], 50.00th=[ 25035], 60.00th=[ 31589], | 70.00th=[ 41681], 80.00th=[ 52167], 90.00th=[ 76022], 95.00th=[ 89654], | 99.00th=[113771], 99.50th=[160433], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 92, max= 414, per=23.57%, avg=211.93, stdev=71.59, samples=55 iops : min= 5, max= 25, avg=12.45, stdev= 4.54, samples=55 lat (usec) : 50=0.39%, 100=3.39%, 250=0.13%, 500=0.13% lat (msec) : 2=2.21%, 4=4.56%, 10=6.38%, 20=12.24%, 50=44.40% lat (msec) : 100=23.70%, 250=2.47% cpu : usr=0.06%, sys=6.40%, ctx=1691, 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=179482: Thu Aug 13 16:56:30 2026 read: IOPS=13, BW=223KiB/s (229kB/s)(6032KiB/27027msec) clat (usec): min=41, max=178606, avg=39490.71, stdev=27474.51 lat (usec): min=41, max=178607, avg=39492.01, stdev=27474.48 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 60], 10.00th=[ 72], 20.00th=[ 20317], | 30.00th=[ 26084], 40.00th=[ 30540], 50.00th=[ 36963], 60.00th=[ 42730], | 70.00th=[ 48497], 80.00th=[ 56361], 90.00th=[ 77071], 95.00th=[ 88605], | 99.00th=[119014], 99.50th=[149947], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 91, max= 413, per=25.96%, avg=221.74, stdev=81.94, samples=53 iops : min= 5, max= 25, avg=13.08, stdev= 5.18, samples=53 write: IOPS=14, BW=231KiB/s (237kB/s)(6256KiB/27027msec); 0 zone resets clat (usec): min=1398, max=195188, avg=30548.37, stdev=29328.87 lat (usec): min=1400, max=195189, avg=30550.67, stdev=29328.99 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 1991], 10.00th=[ 2868], 20.00th=[ 5800], | 30.00th=[ 9896], 40.00th=[ 15795], 50.00th=[ 21627], 60.00th=[ 27919], | 70.00th=[ 39060], 80.00th=[ 52691], 90.00th=[ 69731], 95.00th=[ 88605], | 99.00th=[132645], 99.50th=[145753], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 63, max= 414, per=25.76%, avg=231.58, stdev=85.24, samples=53 iops : min= 3, max= 25, avg=13.70, stdev= 5.37, samples=53 lat (usec) : 50=0.26%, 100=5.60%, 250=0.13%, 500=0.13%, 750=0.26% lat (msec) : 2=2.86%, 4=5.34%, 10=7.81%, 20=10.94%, 50=41.80% lat (msec) : 100=21.74%, 250=3.12% cpu : usr=0.09%, sys=6.60%, ctx=1647, 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=855KiB/s (875kB/s), 211KiB/s-223KiB/s (216kB/s-229kB/s), io=23.4MiB (24.5MB), run=26376-28019msec WRITE: bw=899KiB/s (921kB/s), 215KiB/s-248KiB/s (220kB/s-254kB/s), io=24.6MiB (25.8MB), run=26376-28019msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179483: Thu Aug 13 16:56:42 2026 read: IOPS=9, BW=147KiB/s (151kB/s)(5920KiB/40249msec) clat (msec): min=6, max=173, avg=44.13, stdev=31.79 lat (msec): min=6, max=173, avg=44.13, stdev=31.79 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 47], 80.00th=[ 59], 90.00th=[ 89], 95.00th=[ 115], | 99.00th=[ 163], 99.50th=[ 174], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 31, max= 414, per=24.27%, avg=144.39, stdev=83.72, samples=79 iops : min= 1, max= 25, avg= 8.24, stdev= 5.29, samples=79 write: IOPS=9, BW=158KiB/s (162kB/s)(6368KiB/40249msec); 0 zone resets clat (msec): min=12, max=228, avg=59.81, stdev=35.79 lat (msec): min=12, max=228, avg=59.81, stdev=35.79 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 58], | 70.00th=[ 68], 80.00th=[ 86], 90.00th=[ 111], 95.00th=[ 133], | 99.00th=[ 178], 99.50th=[ 192], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 31, max= 352, per=25.36%, avg=158.78, stdev=72.85, samples=78 iops : min= 1, max= 22, avg= 9.15, stdev= 4.64, samples=78 lat (msec) : 10=0.65%, 20=8.33%, 50=52.99%, 100=27.73%, 250=10.29% cpu : usr=0.05%, sys=2.47%, ctx=1329, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179484: Thu Aug 13 16:56:42 2026 read: IOPS=8, BW=143KiB/s (146kB/s)(5744KiB/40172msec) clat (msec): min=9, max=234, avg=43.13, stdev=32.38 lat (msec): min=9, max=234, avg=43.15, stdev=32.38 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 39], | 70.00th=[ 44], 80.00th=[ 56], 90.00th=[ 83], 95.00th=[ 116], | 99.00th=[ 161], 99.50th=[ 211], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 30, max= 382, per=24.43%, avg=145.36, stdev=79.98, samples=77 iops : min= 1, max= 23, avg= 8.30, stdev= 5.08, samples=77 write: IOPS=10, BW=163KiB/s (167kB/s)(6544KiB/40172msec); 0 zone resets clat (msec): min=15, max=249, avg=59.63, stdev=36.93 lat (msec): min=15, max=249, avg=59.64, stdev=36.93 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 40], 50.00th=[ 51], 60.00th=[ 60], | 70.00th=[ 71], 80.00th=[ 87], 90.00th=[ 114], 95.00th=[ 136], | 99.00th=[ 169], 99.50th=[ 180], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 30, max= 411, per=25.76%, avg=161.25, stdev=83.04, samples=79 iops : min= 1, max= 25, avg= 9.30, stdev= 5.26, samples=79 lat (msec) : 10=0.39%, 20=10.03%, 50=51.69%, 100=27.34%, 250=10.55% cpu : usr=0.06%, sys=2.46%, ctx=1352, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179485: Thu Aug 13 16:56:42 2026 read: IOPS=9, BW=156KiB/s (160kB/s)(6256KiB/40161msec) clat (msec): min=7, max=185, avg=44.06, stdev=31.22 lat (msec): min=7, max=185, avg=44.06, stdev=31.22 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 51], 80.00th=[ 61], 90.00th=[ 84], 95.00th=[ 107], | 99.00th=[ 180], 99.50th=[ 184], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 31, max= 440, per=26.50%, avg=157.69, stdev=88.87, samples=78 iops : min= 1, max= 27, avg= 9.08, stdev= 5.62, samples=78 write: IOPS=9, BW=150KiB/s (154kB/s)(6032KiB/40161msec); 0 zone resets clat (msec): min=13, max=197, avg=60.08, stdev=36.52 lat (msec): min=13, max=197, avg=60.08, stdev=36.52 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 26], 20.00th=[ 31], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 50], 60.00th=[ 59], | 70.00th=[ 73], 80.00th=[ 88], 90.00th=[ 114], 95.00th=[ 138], | 99.00th=[ 180], 99.50th=[ 199], 99.90th=[ 199], 99.95th=[ 199], | 99.99th=[ 199] bw ( KiB/s): min= 31, max= 320, per=23.57%, avg=147.53, stdev=69.36, samples=79 iops : min= 1, max= 20, avg= 8.44, stdev= 4.39, samples=79 lat (msec) : 10=1.04%, 20=9.77%, 50=49.61%, 100=29.69%, 250=9.90% cpu : usr=0.07%, sys=2.60%, ctx=1379, 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=179486: Thu Aug 13 16:56:42 2026 read: IOPS=9, BW=151KiB/s (155kB/s)(6032KiB/39918msec) clat (msec): min=6, max=228, avg=46.51, stdev=35.78 lat (msec): min=6, max=228, avg=46.51, stdev=35.78 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 42], | 70.00th=[ 51], 80.00th=[ 64], 90.00th=[ 96], 95.00th=[ 120], | 99.00th=[ 192], 99.50th=[ 224], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 31, max= 350, per=25.57%, avg=152.12, stdev=75.29, samples=76 iops : min= 1, max= 21, avg= 8.72, stdev= 4.77, samples=76 write: IOPS=9, BW=157KiB/s (160kB/s)(6256KiB/39918msec); 0 zone resets clat (msec): min=12, max=187, avg=56.65, stdev=32.62 lat (msec): min=12, max=187, avg=56.66, stdev=32.62 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 56], | 70.00th=[ 66], 80.00th=[ 80], 90.00th=[ 104], 95.00th=[ 122], | 99.00th=[ 171], 99.50th=[ 182], 99.90th=[ 188], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 62, max= 352, per=24.99%, avg=156.43, stdev=75.72, samples=77 iops : min= 3, max= 22, avg= 8.99, stdev= 4.80, samples=77 lat (msec) : 10=0.65%, 20=10.81%, 50=48.83%, 100=29.95%, 250=9.77% cpu : usr=0.03%, sys=2.33%, ctx=1333, 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=595KiB/s (609kB/s), 143KiB/s-156KiB/s (146kB/s-160kB/s), io=23.4MiB (24.5MB), run=39918-40249msec WRITE: bw=626KiB/s (641kB/s), 150KiB/s-163KiB/s (154kB/s-167kB/s), io=24.6MiB (25.8MB), run=39918-40249msec 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=179499: Thu Aug 13 16:56:57 2026 read: IOPS=1, BW=1919KiB/s (1965kB/s)(7168KiB/3736msec) clat (msec): min=141, max=301, avg=190.48, stdev=57.26 lat (msec): min=141, max=301, avg=190.48, stdev=57.26 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 144], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 192], 60.00th=[ 199], | 70.00th=[ 199], 80.00th=[ 211], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 2011, max= 4278, per=62.99%, avg=2585.75, stdev=1128.19, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1370KiB/s (1403kB/s)(5120KiB/3736msec); 0 zone resets clat (msec): min=161, max=822, avg=469.71, stdev=248.93 lat (msec): min=163, max=822, avg=470.29, stdev=248.42 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 443], 60.00th=[ 443], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 2027, max= 2942, per=40.65%, avg=2336.00, stdev=524.85, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (msec) : 250=58.33%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=12.72%, ctx=211, 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=179500: Thu Aug 13 16:56:57 2026 read: IOPS=0, BW=411KiB/s (420kB/s)(2048KiB/4989msec) clat (msec): min=306, max=388, avg=347.82, stdev=57.96 lat (msec): min=306, max=388, avg=347.83, stdev=57.96 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 1473, max= 2011, per=42.44%, avg=1742.00, stdev=380.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2053KiB/s (2102kB/s)(10.0MiB/4989msec); 0 zone resets clat (msec): min=177, max=795, avg=398.58, stdev=208.09 lat (msec): min=178, max=795, avg=398.76, stdev=207.98 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 199], | 30.00th=[ 236], 40.00th=[ 243], 50.00th=[ 279], 60.00th=[ 435], | 70.00th=[ 477], 80.00th=[ 514], 90.00th=[ 642], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1471, max= 4055, per=43.85%, avg=2519.86, stdev=1067.58, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=11.03%, ctx=146, 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=179501: Thu Aug 13 16:56:57 2026 read: IOPS=1, BW=1669KiB/s (1709kB/s)(6144KiB/3682msec) clat (usec): min=351, max=369647, avg=115648.91, stdev=176056.07 lat (usec): min=351, max=369648, avg=115650.32, stdev=176056.19 clat percentiles (usec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 519], | 30.00th=[ 519], 40.00th=[ 4228], 50.00th=[ 4228], 60.00th=[ 5211], | 70.00th=[312476], 80.00th=[312476], 90.00th=[371196], 95.00th=[371196], | 99.00th=[371196], 99.50th=[371196], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 4079, max= 6035, per=100.00%, avg=5057.00, stdev=1383.10, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1669KiB/s (1709kB/s)(6144KiB/3682msec); 0 zone resets clat (msec): min=167, max=753, avg=449.52, stdev=284.36 lat (msec): min=167, max=753, avg=449.61, stdev=284.33 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 218], 50.00th=[ 218], 60.00th=[ 617], | 70.00th=[ 743], 80.00th=[ 743], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1471, max= 4055, per=50.41%, avg=2897.00, stdev=1338.96, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 10=16.67%, 250=25.00%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.05%, sys=11.63%, ctx=130, 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=179502: Thu Aug 13 16:56:57 2026 read: IOPS=1, BW=1636KiB/s (1675kB/s)(5120KiB/3130msec) clat (usec): min=553, max=262762, avg=150867.64, stdev=136908.78 lat (usec): min=554, max=262764, avg=150868.90, stdev=136908.76 clat percentiles (usec): | 1.00th=[ 553], 5.00th=[ 553], 10.00th=[ 553], 20.00th=[ 553], | 30.00th=[ 1745], 40.00th=[ 1745], 50.00th=[240124], 60.00th=[240124], | 70.00th=[248513], 80.00th=[248513], 90.00th=[263193], 95.00th=[263193], | 99.00th=[263193], 99.50th=[263193], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 1471, max= 4079, per=61.53%, avg=2525.67, stdev=1373.65, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=2, BW=2290KiB/s (2345kB/s)(7168KiB/3130msec); 0 zone resets clat (msec): min=156, max=558, avg=318.24, stdev=131.18 lat (msec): min=156, max=558, avg=318.35, stdev=131.18 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 209], | 30.00th=[ 264], 40.00th=[ 264], 50.00th=[ 330], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 380], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 2027, max= 2968, per=43.34%, avg=2491.00, stdev=535.89, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=33.33%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=14.89%, ctx=147, 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=4105KiB/s (4204kB/s), 411KiB/s-1919KiB/s (420kB/s-1965kB/s), io=20.0MiB (20.0MB), run=3130-4989msec WRITE: bw=5747KiB/s (5885kB/s), 1370KiB/s-2290KiB/s (1403kB/s-2345kB/s), io=28.0MiB (29.4MB), run=3130-4989msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179503: Thu Aug 13 16:56:57 2026 read: IOPS=1, BW=1501KiB/s (1537kB/s)(7168KiB/4776msec) clat (msec): min=81, max=700, avg=382.97, stdev=280.72 lat (msec): min=81, max=700, avg=382.98, stdev=280.72 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 83], | 30.00th=[ 129], 40.00th=[ 129], 50.00th=[ 439], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 684], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1950, max= 2043, per=50.65%, avg=2018.33, stdev=37.39, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=1, BW=1072KiB/s (1098kB/s)(5120KiB/4776msec); 0 zone resets clat (msec): min=147, max=646, avg=334.89, stdev=191.25 lat (msec): min=147, max=646, avg=335.20, stdev=191.09 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1939, max= 4087, per=60.14%, avg=3355.00, stdev=1226.53, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 750=33.33% cpu : usr=0.00%, sys=4.36%, ctx=110, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179504: Thu Aug 13 16:56:57 2026 read: IOPS=0, BW=399KiB/s (408kB/s)(2048KiB/5139msec) clat (msec): min=159, max=388, avg=274.37, stdev=161.90 lat (msec): min=159, max=388, avg=274.37, stdev=161.90 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 161], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 2019, max= 2031, per=50.82%, avg=2025.00, stdev= 8.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1993KiB/s (2040kB/s)(10.0MiB/5139msec); 0 zone resets clat (msec): min=133, max=753, avg=420.07, stdev=230.22 lat (msec): min=134, max=753, avg=420.18, stdev=230.22 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 142], | 30.00th=[ 197], 40.00th=[ 245], 50.00th=[ 426], 60.00th=[ 451], | 70.00th=[ 575], 80.00th=[ 592], 90.00th=[ 684], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1939, max= 4039, per=41.99%, avg=2342.83, stdev=832.36, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=4.59%, ctx=116, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179505: Thu Aug 13 16:56:57 2026 read: IOPS=1, BW=1301KiB/s (1332kB/s)(6144KiB/4722msec) clat (msec): min=123, max=641, avg=351.00, stdev=200.02 lat (msec): min=123, max=641, avg=351.00, stdev=200.02 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 255], 50.00th=[ 255], 60.00th=[ 313], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1939, max= 4039, per=63.14%, avg=2516.00, stdev=1016.52, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1301KiB/s (1332kB/s)(6144KiB/4722msec); 0 zone resets clat (msec): min=106, max=718, avg=415.95, stdev=215.44 lat (msec): min=106, max=718, avg=416.04, stdev=215.43 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 439], | 70.00th=[ 575], 80.00th=[ 575], 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= 1537, max= 2031, per=34.19%, avg=1907.40, stdev=209.35, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=25.00%, 500=41.67%, 750=33.33% cpu : usr=0.02%, sys=2.90%, ctx=63, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179506: Thu Aug 13 16:56:57 2026 read: IOPS=1, BW=1031KiB/s (1055kB/s)(5120KiB/4968msec) clat (msec): min=70, max=753, avg=277.02, stdev=276.02 lat (msec): min=70, max=753, avg=277.02, stdev=276.02 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 71], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 146], 60.00th=[ 146], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 4039, max= 4087, per=100.00%, avg=4063.00, stdev=33.94, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1443KiB/s (1477kB/s)(7168KiB/4968msec); 0 zone resets clat (msec): min=159, max=767, avg=467.14, stdev=222.95 lat (msec): min=159, max=767, avg=467.24, stdev=222.96 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 199], | 30.00th=[ 451], 40.00th=[ 451], 50.00th=[ 493], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 642], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1950, max= 3878, per=42.74%, avg=2384.20, stdev=835.84, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 1000=16.67% cpu : usr=0.02%, sys=4.13%, ctx=145, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3985KiB/s (4081kB/s), 399KiB/s-1501KiB/s (408kB/s-1537kB/s), io=20.0MiB (20.0MB), run=4722-5139msec WRITE: bw=5579KiB/s (5713kB/s), 1072KiB/s-1993KiB/s (1098kB/s-2040kB/s), io=28.0MiB (29.4MB), run=4722-5139msec 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=179515: Thu Aug 13 16:57:13 2026 read: IOPS=1, BW=4997KiB/s (5117kB/s)(12.0MiB/2459msec) clat (msec): min=692, max=948, avg=790.70, stdev=137.62 lat (msec): min=692, max=948, avg=790.70, stdev=137.62 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=13.75%, ctx=226, 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=179516: Thu Aug 13 16:57:13 2026 read: IOPS=0, BW=1437KiB/s (1472kB/s)(4096KiB/2850msec) clat (nsec): min=742636k, max=742636k, avg=742636481.00, stdev= 0.00 lat (nsec): min=742639k, max=742639k, avg=742639486.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 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= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2874KiB/s (2943kB/s)(8192KiB/2850msec); 0 zone resets clat (msec): min=626, max=1431, avg=1028.83, stdev=569.57 lat (msec): min=626, max=1432, avg=1029.29, stdev=569.69 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=[ 1435], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 8047, max= 8047, per=78.37%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.19%, ctx=117, 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=179517: Thu Aug 13 16:57:13 2026 write: IOPS=0, BW=3851KiB/s (3943kB/s)(12.0MiB/3191msec); 0 zone resets clat (msec): min=273, max=2428, avg=1047.57, stdev=1198.99 lat (msec): min=274, max=2429, avg=1048.36, stdev=1198.79 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 275], | 30.00th=[ 275], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 439], | 70.00th=[ 2433], 80.00th=[ 2433], 90.00th=[ 2433], 95.00th=[ 2433], | 99.00th=[ 2433], 99.50th=[ 2433], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 7907, max= 7907, per=77.01%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.51%, 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=179518: Thu Aug 13 16:57:13 2026 write: IOPS=0, BW=3946KiB/s (4041kB/s)(12.0MiB/3114msec); 0 zone resets clat (msec): min=224, max=2180, avg=999.34, stdev=1039.78 lat (msec): min=224, max=2181, avg=1000.97, stdev=1039.08 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min=16351, max=16351, per=100.00%, avg=16351.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.41%, ctx=43, 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=5749KiB/s (5887kB/s), 1437KiB/s-4997KiB/s (1472kB/s-5117kB/s), io=16.0MiB (16.8MB), run=2459-2850msec WRITE: bw=10.0MiB/s (10.5MB/s), 2874KiB/s-3946KiB/s (2943kB/s-4041kB/s), io=32.0MiB (33.6MB), run=2850-3191msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179519: Thu Aug 13 16:57:13 2026 read: IOPS=1, BW=4472KiB/s (4579kB/s)(12.0MiB/2748msec) clat (msec): min=334, max=1358, avg=885.26, stdev=516.28 lat (msec): min=334, max=1358, avg=885.26, stdev=516.28 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7742, max= 8143, per=100.00%, avg=7942.50, stdev=283.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.82%, ctx=57, 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=179520: Thu Aug 13 16:57:13 2026 read: IOPS=0, BW=1279KiB/s (1309kB/s)(4096KiB/3203msec) clat (nsec): min=698167k, max=698167k, avg=698167320.00, stdev= 0.00 lat (nsec): min=698170k, max=698170k, avg=698170428.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2558KiB/s (2619kB/s)(8192KiB/3203msec); 0 zone resets clat (msec): min=701, max=1736, avg=1218.90, stdev=732.06 lat (msec): min=701, max=1736, avg=1219.29, stdev=732.05 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 1737], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 7742, max= 7742, per=81.92%, avg=7742.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=4.06%, ctx=51, 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=179521: Thu Aug 13 16:57:13 2026 write: IOPS=0, BW=3544KiB/s (3629kB/s)(12.0MiB/3467msec); 0 zone resets clat (msec): min=215, max=2509, avg=1123.87, stdev=1219.19 lat (msec): min=216, max=2514, avg=1125.77, stdev=1221.76 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 2500], 80.00th=[ 2500], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 8143, max= 8143, per=86.16%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.74%, ctx=36, 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=179522: Thu Aug 13 16:57:13 2026 write: IOPS=0, BW=3938KiB/s (4033kB/s)(12.0MiB/3120msec); 0 zone resets clat (msec): min=850, max=1112, avg=1000.15, stdev=134.78 lat (msec): min=855, max=1112, avg=1001.93, stdev=132.38 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1036], | 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= 8062, max= 8175, per=85.90%, avg=8118.50, stdev=79.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.06%, sys=4.65%, ctx=50, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5115KiB/s (5238kB/s), 1279KiB/s-4472KiB/s (1309kB/s-4579kB/s), io=16.0MiB (16.8MB), run=2748-3203msec WRITE: bw=9451KiB/s (9678kB/s), 2558KiB/s-3938KiB/s (2619kB/s-4033kB/s), io=32.0MiB (33.6MB), run=3120-3467msec