== sanity test 398b: DIO and buffer IO race ============== 19:19:28 (1787699968) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.63916 s, 7.6 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=195041: Tue Aug 25 19:22:07 2026 read: IOPS=10, BW=43.7KiB/s (44.7kB/s)(5992KiB/137210msec) clat (usec): min=43, max=1201.9k, avg=50871.96, stdev=44508.71 lat (usec): min=43, max=1201.9k, avg=50877.91, stdev=44509.99 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 10945], 10.00th=[ 17433], | 20.00th=[ 24249], 30.00th=[ 30016], 40.00th=[ 36963], | 50.00th=[ 43254], 60.00th=[ 51643], 70.00th=[ 60031], | 80.00th=[ 72877], 90.00th=[ 91751], 95.00th=[ 111674], | 99.00th=[ 158335], 99.50th=[ 183501], 99.90th=[ 265290], | 99.95th=[1199571], 99.99th=[1199571] bw ( KiB/s): min= 7, max= 95, per=25.10%, avg=43.43, stdev=17.11, samples=267 iops : min= 1, max= 23, avg=10.20, stdev= 4.31, samples=267 write: IOPS=11, BW=45.9KiB/s (46.0kB/s)(6296KiB/137210msec); 0 zone resets clat (usec): min=599, max=325175, avg=38402.98, stdev=39875.47 lat (usec): min=600, max=325176, avg=38405.76, stdev=39874.96 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1156], 10.00th=[ 1287], 20.00th=[ 3458], | 30.00th=[ 7635], 40.00th=[ 17171], 50.00th=[ 26608], 60.00th=[ 37487], | 70.00th=[ 51119], 80.00th=[ 67634], 90.00th=[ 92799], 95.00th=[114820], | 99.00th=[166724], 99.50th=[187696], 99.90th=[231736], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 7, max= 135, per=25.13%, avg=45.74, stdev=21.36, samples=267 iops : min= 1, max= 33, avg=10.77, stdev= 5.36, samples=267 lat (usec) : 50=0.13%, 100=1.60%, 250=0.13%, 750=0.03%, 1000=0.33% lat (msec) : 2=7.26%, 4=3.58%, 10=6.32%, 20=8.89%, 50=35.19% lat (msec) : 100=28.74%, 250=7.71%, 500=0.07%, 2000=0.03% cpu : usr=0.07%, sys=4.06%, ctx=6179, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195043: Tue Aug 25 19:22:07 2026 read: IOPS=10, BW=43.2KiB/s (44.2kB/s)(5940KiB/137514msec) clat (usec): min=20, max=1138.7k, avg=50618.55, stdev=43895.37 lat (usec): min=20, max=1138.7k, avg=50620.24, stdev=43895.34 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 12387], 10.00th=[ 18220], | 20.00th=[ 23987], 30.00th=[ 30278], 40.00th=[ 35914], | 50.00th=[ 42206], 60.00th=[ 50594], 70.00th=[ 61080], | 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[ 110625], | 99.00th=[ 173016], 99.50th=[ 208667], 99.90th=[ 248513], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 110, per=25.05%, avg=43.34, stdev=17.47, samples=266 iops : min= 1, max= 27, avg=10.17, stdev= 4.40, samples=266 write: IOPS=11, BW=46.2KiB/s (47.3kB/s)(6348KiB/137514msec); 0 zone resets clat (usec): min=858, max=270619, avg=38920.05, stdev=41423.84 lat (usec): min=859, max=270621, avg=38921.87, stdev=41424.26 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1172], 10.00th=[ 1287], 20.00th=[ 3097], | 30.00th=[ 7373], 40.00th=[ 17957], 50.00th=[ 28181], 60.00th=[ 37487], | 70.00th=[ 49546], 80.00th=[ 66323], 90.00th=[ 94897], 95.00th=[121111], | 99.00th=[179307], 99.50th=[208667], 99.90th=[265290], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 126, per=25.32%, avg=46.07, stdev=21.15, samples=267 iops : min= 1, max= 31, avg=10.86, stdev= 5.33, samples=267 lat (usec) : 50=0.16%, 100=1.76%, 250=0.07%, 1000=0.16% lat (msec) : 2=8.14%, 4=3.32%, 10=6.18%, 20=7.85%, 50=37.14% lat (msec) : 100=27.18%, 250=7.91%, 500=0.10%, 2000=0.03% cpu : usr=0.07%, sys=4.14%, ctx=6127, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195045: Tue Aug 25 19:22:07 2026 read: IOPS=11, BW=44.3KiB/s (45.4kB/s)(6028KiB/135990msec) clat (usec): min=34, max=1130.0k, avg=50504.00, stdev=43243.46 lat (usec): min=34, max=1130.0k, avg=50505.18, stdev=43243.52 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 537], 10.00th=[ 17433], | 20.00th=[ 24773], 30.00th=[ 30802], 40.00th=[ 36439], | 50.00th=[ 43254], 60.00th=[ 51119], 70.00th=[ 60556], | 80.00th=[ 72877], 90.00th=[ 88605], 95.00th=[ 109577], | 99.00th=[ 168821], 99.50th=[ 183501], 99.90th=[ 329253], | 99.95th=[1132463], 99.99th=[1132463] bw ( KiB/s): min= 7, max= 94, per=25.60%, avg=44.29, stdev=17.92, samples=265 iops : min= 1, max= 23, avg=10.42, stdev= 4.52, samples=265 write: IOPS=11, BW=46.0KiB/s (47.1kB/s)(6260KiB/135990msec); 0 zone resets clat (usec): min=802, max=279320, avg=37920.50, stdev=39783.73 lat (usec): min=803, max=279321, avg=37925.99, stdev=39786.37 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 1156], 10.00th=[ 1287], 20.00th=[ 3195], | 30.00th=[ 7373], 40.00th=[ 16909], 50.00th=[ 26870], 60.00th=[ 36963], | 70.00th=[ 47973], 80.00th=[ 66323], 90.00th=[ 93848], 95.00th=[117965], | 99.00th=[170918], 99.50th=[198181], 99.90th=[267387], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 111, per=25.30%, avg=46.05, stdev=20.46, samples=265 iops : min= 1, max= 27, avg=10.85, stdev= 5.14, samples=265 lat (usec) : 50=0.29%, 100=1.99%, 250=0.07%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.52% lat (msec) : 2=7.32%, 4=3.74%, 10=5.99%, 20=7.88%, 50=36.88% lat (msec) : 100=27.77%, 250=7.26%, 500=0.13%, 2000=0.03% cpu : usr=0.07%, sys=4.14%, ctx=6144, 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=195048: Tue Aug 25 19:22:07 2026 read: IOPS=10, BW=43.8KiB/s (44.9kB/s)(6052KiB/138051msec) clat (usec): min=23, max=258137, avg=49656.91, stdev=33128.57 lat (usec): min=23, max=258137, avg=49658.72, stdev=33128.41 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 89], 10.00th=[ 16450], 20.00th=[ 23987], | 30.00th=[ 30802], 40.00th=[ 35914], 50.00th=[ 42206], 60.00th=[ 51119], | 70.00th=[ 60556], 80.00th=[ 71828], 90.00th=[ 90702], 95.00th=[112722], | 99.00th=[166724], 99.50th=[183501], 99.90th=[235930], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 7, max= 103, per=25.47%, avg=44.07, stdev=18.33, samples=267 iops : min= 1, max= 25, avg=10.36, stdev= 4.62, samples=267 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(6236KiB/138051msec); 0 zone resets clat (usec): min=785, max=1146.9k, avg=39971.05, stdev=50022.93 lat (usec): min=786, max=1146.9k, avg=39973.96, stdev=50022.44 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1156], 10.00th=[ 1254], | 20.00th=[ 3032], 30.00th=[ 6783], 40.00th=[ 18482], | 50.00th=[ 29754], 60.00th=[ 38536], 70.00th=[ 51119], | 80.00th=[ 68682], 90.00th=[ 91751], 95.00th=[ 117965], | 99.00th=[ 168821], 99.50th=[ 219153], 99.90th=[ 383779], | 99.95th=[1149240], 99.99th=[1149240] bw ( KiB/s): min= 7, max= 119, per=24.66%, avg=44.89, stdev=19.72, samples=270 iops : min= 1, max= 29, avg=10.56, stdev= 4.96, samples=270 lat (usec) : 50=0.23%, 100=2.28%, 250=0.07%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.42% lat (msec) : 2=7.68%, 4=3.68%, 10=5.53%, 20=7.71%, 50=36.10% lat (msec) : 100=28.32%, 250=7.75%, 500=0.13%, 2000=0.03% cpu : usr=0.06%, sys=4.23%, ctx=6132, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=174KiB/s (178kB/s), 43.2KiB/s-44.3KiB/s (44.2kB/s-45.4kB/s), io=23.4MiB (24.6MB), run=135990-138051msec WRITE: bw=182KiB/s (186kB/s), 45.2KiB/s-46.2KiB/s (46.3kB/s-47.3kB/s), io=24.6MiB (25.7MB), run=135990-138051msec rand-rw: (groupid=0, jobs=1): err= 0: pid=195042: Tue Aug 25 19:22:51 2026 read: IOPS=8, BW=32.9KiB/s (33.6kB/s)(5992KiB/182396msec) clat (msec): min=5, max=1256, avg=46.95, stdev=53.71 lat (msec): min=5, max=1256, avg=46.95, stdev=53.71 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 47], 80.00th=[ 67], 90.00th=[ 107], 95.00th=[ 136], | 99.00th=[ 228], 99.50th=[ 266], 99.90th=[ 342], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7, max= 144, per=25.67%, avg=33.63, stdev=25.00, samples=346 iops : min= 1, max= 36, avg= 7.75, stdev= 6.30, samples=346 write: IOPS=8, BW=34.5KiB/s (35.3kB/s)(6296KiB/182396msec); 0 zone resets clat (msec): min=9, max=410, avg=70.85, stdev=51.44 lat (msec): min=9, max=410, avg=70.85, stdev=51.43 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 65], | 70.00th=[ 82], 80.00th=[ 105], 90.00th=[ 144], 95.00th=[ 178], | 99.00th=[ 251], 99.50th=[ 275], 99.90th=[ 359], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 7, max= 127, per=25.13%, avg=34.43, stdev=22.43, samples=355 iops : min= 1, max= 31, avg= 7.94, stdev= 5.66, samples=355 lat (msec) : 10=2.90%, 20=12.63%, 50=43.20%, 100=25.00%, 250=15.46% lat (msec) : 500=0.78%, 2000=0.03% cpu : usr=0.05%, sys=1.44%, ctx=4568, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195044: Tue Aug 25 19:22:51 2026 read: IOPS=8, BW=33.0KiB/s (33.8kB/s)(5940KiB/179798msec) clat (msec): min=4, max=1075, avg=46.54, stdev=49.46 lat (msec): min=4, max=1075, avg=46.55, stdev=49.47 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 70], 90.00th=[ 102], 95.00th=[ 132], | 99.00th=[ 222], 99.50th=[ 247], 99.90th=[ 292], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 159, per=25.78%, avg=33.78, stdev=24.16, samples=341 iops : min= 1, max= 39, avg= 7.77, stdev= 6.09, samples=341 write: IOPS=8, BW=35.3KiB/s (36.2kB/s)(6348KiB/179798msec); 0 zone resets clat (msec): min=8, max=422, avg=69.43, stdev=49.80 lat (msec): min=8, max=422, avg=69.43, stdev=49.80 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 82], 80.00th=[ 102], 90.00th=[ 136], 95.00th=[ 167], | 99.00th=[ 249], 99.50th=[ 275], 99.90th=[ 409], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 135, per=25.81%, avg=35.35, stdev=22.40, samples=348 iops : min= 1, max= 33, avg= 8.17, stdev= 5.66, samples=348 lat (msec) : 10=2.28%, 20=13.48%, 50=42.29%, 100=26.33%, 250=14.97% lat (msec) : 500=0.62%, 2000=0.03% cpu : usr=0.06%, sys=1.39%, ctx=4518, 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=195046: Tue Aug 25 19:22:51 2026 read: IOPS=8, BW=33.3KiB/s (34.1kB/s)(6028KiB/180887msec) clat (msec): min=4, max=489, avg=47.58, stdev=45.15 lat (msec): min=4, max=489, avg=47.58, stdev=45.15 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 71], 90.00th=[ 106], 95.00th=[ 138], | 99.00th=[ 213], 99.50th=[ 271], 99.90th=[ 376], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 7, max= 142, per=26.23%, avg=34.36, stdev=23.88, samples=341 iops : min= 1, max= 35, avg= 7.92, stdev= 6.03, samples=341 write: IOPS=8, BW=34.6KiB/s (35.4kB/s)(6260KiB/180887msec); 0 zone resets clat (msec): min=11, max=1094, avg=69.42, stdev=54.98 lat (msec): min=11, max=1094, avg=69.43, stdev=54.98 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 64], | 70.00th=[ 81], 80.00th=[ 102], 90.00th=[ 136], 95.00th=[ 163], | 99.00th=[ 228], 99.50th=[ 284], 99.90th=[ 426], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 143, per=25.49%, avg=34.92, stdev=22.86, samples=348 iops : min= 1, max= 35, avg= 8.06, stdev= 5.77, samples=348 lat (msec) : 10=2.41%, 20=12.04%, 50=43.59%, 100=26.17%, 250=15.07% lat (msec) : 500=0.68%, 2000=0.03% cpu : usr=0.05%, sys=1.51%, ctx=4732, 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=195047: Tue Aug 25 19:22:51 2026 read: IOPS=8, BW=33.4KiB/s (34.2kB/s)(6052KiB/181265msec) clat (msec): min=4, max=494, avg=46.82, stdev=44.18 lat (msec): min=4, max=494, avg=46.82, stdev=44.18 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 50], 80.00th=[ 71], 90.00th=[ 108], 95.00th=[ 138], | 99.00th=[ 197], 99.50th=[ 230], 99.90th=[ 372], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 7, max= 142, per=26.24%, avg=34.38, stdev=23.82, samples=341 iops : min= 1, max= 35, avg= 7.92, stdev= 6.00, samples=341 write: IOPS=8, BW=34.4KiB/s (35.2kB/s)(6236KiB/181265msec); 0 zone resets clat (msec): min=8, max=1098, avg=70.52, stdev=56.54 lat (msec): min=8, max=1098, avg=70.52, stdev=56.55 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 65], | 70.00th=[ 79], 80.00th=[ 100], 90.00th=[ 138], 95.00th=[ 169], | 99.00th=[ 249], 99.50th=[ 313], 99.90th=[ 418], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 128, per=25.04%, avg=34.30, stdev=21.44, samples=351 iops : min= 1, max= 32, avg= 7.91, stdev= 5.42, samples=351 lat (msec) : 10=2.60%, 20=12.57%, 50=42.35%, 100=26.92%, 250=14.94% lat (msec) : 500=0.59%, 2000=0.03% cpu : usr=0.05%, sys=1.47%, ctx=4535, 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=132KiB/s (135kB/s), 32.9KiB/s-33.4KiB/s (33.6kB/s-34.2kB/s), io=23.4MiB (24.6MB), run=179798-182396msec WRITE: bw=138KiB/s (141kB/s), 34.4KiB/s-35.3KiB/s (35.2kB/s-36.2kB/s), io=24.6MiB (25.7MB), run=179798-182396msec 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=195092: Tue Aug 25 19:23:40 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(5920KiB/36817msec) clat (usec): min=39, max=225546, avg=50114.63, stdev=31273.96 lat (usec): min=39, max=225547, avg=50121.31, stdev=31272.00 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 64], 10.00th=[ 8586], 20.00th=[ 28181], | 30.00th=[ 34341], 40.00th=[ 39060], 50.00th=[ 46924], 60.00th=[ 54264], | 70.00th=[ 61604], 80.00th=[ 71828], 90.00th=[ 89654], 95.00th=[104334], | 99.00th=[145753], 99.50th=[152044], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 62, max= 344, per=24.77%, avg=161.03, stdev=61.72, samples=71 iops : min= 3, max= 21, avg= 9.31, stdev= 3.94, samples=71 write: IOPS=10, BW=173KiB/s (177kB/s)(6368KiB/36817msec); 0 zone resets clat (usec): min=1248, max=237155, avg=44853.18, stdev=43707.12 lat (usec): min=1249, max=237158, avg=44856.39, stdev=43707.04 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1811], 10.00th=[ 2507], 20.00th=[ 6063], | 30.00th=[ 10814], 40.00th=[ 20317], 50.00th=[ 32113], 60.00th=[ 44827], | 70.00th=[ 62653], 80.00th=[ 81265], 90.00th=[101188], 95.00th=[131597], | 99.00th=[189793], 99.50th=[206570], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 31, max= 317, per=25.46%, avg=174.13, stdev=64.63, samples=71 iops : min= 1, max= 19, avg=10.13, stdev= 4.10, samples=71 lat (usec) : 50=0.65%, 100=3.52%, 250=0.26% lat (msec) : 2=4.56%, 4=3.39%, 10=7.42%, 20=7.29%, 50=31.38% lat (msec) : 100=32.55%, 250=8.98% cpu : usr=0.09%, sys=4.41%, ctx=1608, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195093: Tue Aug 25 19:23:40 2026 read: IOPS=10, BW=172KiB/s (176kB/s)(5744KiB/33443msec) clat (usec): min=35, max=212814, avg=49528.73, stdev=33408.76 lat (usec): min=35, max=212815, avg=49530.04, stdev=33408.77 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 63], 10.00th=[ 83], 20.00th=[ 25297], | 30.00th=[ 32113], 40.00th=[ 38536], 50.00th=[ 44827], 60.00th=[ 53740], | 70.00th=[ 63701], 80.00th=[ 77071], 90.00th=[ 94897], 95.00th=[110625], | 99.00th=[149947], 99.50th=[170918], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 31, max= 375, per=26.18%, avg=170.18, stdev=75.42, samples=65 iops : min= 1, max= 23, avg= 9.88, stdev= 4.81, samples=65 write: IOPS=12, BW=196KiB/s (200kB/s)(6544KiB/33443msec); 0 zone resets clat (usec): min=1126, max=288713, avg=37839.68, stdev=40363.19 lat (usec): min=1128, max=288714, avg=37841.82, stdev=40363.16 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1762], 10.00th=[ 2376], 20.00th=[ 4817], | 30.00th=[ 8160], 40.00th=[ 15270], 50.00th=[ 25822], 60.00th=[ 36963], | 70.00th=[ 48497], 80.00th=[ 64750], 90.00th=[ 93848], 95.00th=[117965], | 99.00th=[162530], 99.50th=[196084], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 62, max= 507, per=28.45%, avg=194.60, stdev=90.62, samples=65 iops : min= 3, max= 31, avg=11.42, stdev= 5.74, samples=65 lat (usec) : 50=0.52%, 100=4.82%, 250=0.26% lat (msec) : 2=4.95%, 4=3.26%, 10=10.55%, 20=7.29%, 50=32.94% lat (msec) : 100=27.21%, 250=8.07%, 500=0.13% cpu : usr=0.08%, sys=4.83%, ctx=1540, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195094: Tue Aug 25 19:23:40 2026 read: IOPS=10, BW=171KiB/s (175kB/s)(6256KiB/36569msec) clat (usec): min=40, max=286783, avg=52247.25, stdev=35891.37 lat (usec): min=40, max=286784, avg=52256.10, stdev=35880.72 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 67], 10.00th=[ 94], 20.00th=[ 26870], | 30.00th=[ 35390], 40.00th=[ 41681], 50.00th=[ 47973], 60.00th=[ 56886], | 70.00th=[ 64750], 80.00th=[ 74974], 90.00th=[ 90702], 95.00th=[111674], | 99.00th=[152044], 99.50th=[267387], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 31, max= 352, per=26.58%, avg=172.79, stdev=67.92, samples=70 iops : min= 1, max= 22, avg=10.06, stdev= 4.36, samples=70 write: IOPS=10, BW=165KiB/s (169kB/s)(6032KiB/36569msec); 0 zone resets clat (usec): min=1408, max=192764, avg=41752.92, stdev=37928.95 lat (usec): min=1409, max=192767, avg=41755.02, stdev=37928.87 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1762], 10.00th=[ 2606], 20.00th=[ 6587], | 30.00th=[ 13960], 40.00th=[ 24249], 50.00th=[ 32113], 60.00th=[ 41157], | 70.00th=[ 53740], 80.00th=[ 69731], 90.00th=[ 94897], 95.00th=[124257], | 99.00th=[149947], 99.50th=[158335], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 62, max= 476, per=23.71%, avg=162.18, stdev=78.71, samples=71 iops : min= 3, max= 29, avg= 9.37, stdev= 4.98, samples=71 lat (usec) : 50=0.52%, 100=4.69%, 250=0.26%, 500=0.13% lat (msec) : 2=4.17%, 4=2.86%, 10=5.73%, 20=6.12%, 50=35.42% lat (msec) : 100=31.38%, 250=8.46%, 500=0.26% cpu : usr=0.07%, sys=4.33%, ctx=1565, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195096: Tue Aug 25 19:23:40 2026 read: IOPS=10, BW=165KiB/s (169kB/s)(6032KiB/36577msec) clat (usec): min=39, max=224131, avg=50767.24, stdev=36404.24 lat (usec): min=39, max=224132, avg=50768.53, stdev=36404.28 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 22414], | 30.00th=[ 33817], 40.00th=[ 40109], 50.00th=[ 46924], 60.00th=[ 54789], | 70.00th=[ 63177], 80.00th=[ 77071], 90.00th=[ 92799], 95.00th=[119014], | 99.00th=[183501], 99.50th=[187696], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 31, max= 286, per=25.48%, avg=165.60, stdev=61.11, samples=70 iops : min= 1, max= 17, avg= 9.60, stdev= 3.92, samples=70 write: IOPS=10, BW=171KiB/s (175kB/s)(6256KiB/36577msec); 0 zone resets clat (usec): min=1106, max=276692, avg=43770.86, stdev=40734.25 lat (usec): min=1107, max=276695, avg=43773.48, stdev=40734.76 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1745], 10.00th=[ 2442], 20.00th=[ 6849], | 30.00th=[ 15008], 40.00th=[ 22676], 50.00th=[ 30802], 60.00th=[ 43779], | 70.00th=[ 60031], 80.00th=[ 80217], 90.00th=[100140], 95.00th=[121111], | 99.00th=[164627], 99.50th=[175113], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 31, max= 319, per=24.86%, avg=170.06, stdev=72.71, samples=71 iops : min= 1, max= 19, avg= 9.87, stdev= 4.61, samples=71 lat (usec) : 50=0.65%, 100=5.08%, 250=0.39%, 500=0.13% lat (msec) : 2=4.95%, 4=2.34%, 10=5.34%, 20=8.85%, 50=32.03% lat (msec) : 100=31.25%, 250=8.85%, 500=0.13% cpu : usr=0.08%, sys=4.21%, ctx=1547, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=651KiB/s (666kB/s), 161KiB/s-172KiB/s (165kB/s-176kB/s), io=23.4MiB (24.5MB), run=33443-36817msec WRITE: bw=684KiB/s (701kB/s), 165KiB/s-196KiB/s (169kB/s-200kB/s), io=24.6MiB (25.8MB), run=33443-36817msec rand-rw: (groupid=0, jobs=1): err= 0: pid=195095: Tue Aug 25 19:23:54 2026 read: IOPS=7, BW=117KiB/s (120kB/s)(5920KiB/50457msec) clat (msec): min=7, max=254, avg=51.84, stdev=39.49 lat (msec): min=7, max=254, avg=51.84, stdev=39.49 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 35], 50.00th=[ 41], 60.00th=[ 47], | 70.00th=[ 55], 80.00th=[ 75], 90.00th=[ 106], 95.00th=[ 133], | 99.00th=[ 205], 99.50th=[ 251], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 30, max= 350, per=25.38%, avg=119.55, stdev=70.20, samples=96 iops : min= 1, max= 21, avg= 6.67, stdev= 4.43, samples=96 write: IOPS=7, BW=126KiB/s (129kB/s)(6368KiB/50457msec); 0 zone resets clat (msec): min=15, max=270, avg=77.94, stdev=50.95 lat (msec): min=15, max=270, avg=77.95, stdev=50.95 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 36], | 30.00th=[ 44], 40.00th=[ 55], 50.00th=[ 64], 60.00th=[ 77], | 70.00th=[ 88], 80.00th=[ 120], 90.00th=[ 153], 95.00th=[ 180], | 99.00th=[ 249], 99.50th=[ 266], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 382, per=25.85%, avg=128.22, stdev=73.07, samples=97 iops : min= 1, max= 23, avg= 7.21, stdev= 4.60, samples=97 lat (msec) : 10=0.52%, 20=8.07%, 50=41.15%, 100=31.77%, 250=17.84% lat (msec) : 500=0.65% cpu : usr=0.04%, sys=1.51%, ctx=1176, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195097: Tue Aug 25 19:23:54 2026 read: IOPS=7, BW=113KiB/s (116kB/s)(5744KiB/50770msec) clat (msec): min=7, max=261, avg=52.71, stdev=43.42 lat (msec): min=7, max=261, avg=52.71, stdev=43.42 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 44], | 70.00th=[ 55], 80.00th=[ 73], 90.00th=[ 114], 95.00th=[ 150], | 99.00th=[ 220], 99.50th=[ 262], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 30, max= 415, per=25.03%, avg=117.88, stdev=78.68, samples=95 iops : min= 1, max= 25, avg= 6.56, stdev= 4.93, samples=95 write: IOPS=8, BW=129KiB/s (132kB/s)(6544KiB/50770msec); 0 zone resets clat (msec): min=14, max=284, avg=77.72, stdev=49.33 lat (msec): min=14, max=284, avg=77.73, stdev=49.33 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 33], 20.00th=[ 39], | 30.00th=[ 45], 40.00th=[ 54], 50.00th=[ 63], 60.00th=[ 73], | 70.00th=[ 92], 80.00th=[ 109], 90.00th=[ 153], 95.00th=[ 182], | 99.00th=[ 232], 99.50th=[ 259], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 30, max= 318, per=25.69%, avg=127.43, stdev=65.77, samples=100 iops : min= 1, max= 19, avg= 7.16, stdev= 4.17, samples=100 lat (msec) : 10=0.26%, 20=6.90%, 50=42.84%, 100=30.21%, 250=19.01% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.52%, ctx=1174, 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=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=195098: Tue Aug 25 19:23:54 2026 read: IOPS=7, BW=123KiB/s (126kB/s)(6256KiB/50659msec) clat (msec): min=8, max=346, avg=54.07, stdev=47.88 lat (msec): min=8, max=346, avg=54.08, stdev=47.88 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 18], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 31], 50.00th=[ 38], 60.00th=[ 47], | 70.00th=[ 58], 80.00th=[ 74], 90.00th=[ 120], 95.00th=[ 157], | 99.00th=[ 245], 99.50th=[ 264], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 31, max= 446, per=26.75%, avg=125.98, stdev=82.15, samples=98 iops : min= 1, max= 27, avg= 7.06, stdev= 5.16, samples=98 write: IOPS=7, BW=119KiB/s (122kB/s)(6032KiB/50659msec); 0 zone resets clat (msec): min=16, max=352, avg=77.47, stdev=50.34 lat (msec): min=16, max=352, avg=77.48, stdev=50.34 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 37], | 30.00th=[ 46], 40.00th=[ 54], 50.00th=[ 64], 60.00th=[ 72], | 70.00th=[ 90], 80.00th=[ 115], 90.00th=[ 150], 95.00th=[ 180], | 99.00th=[ 253], 99.50th=[ 268], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 31, max= 383, per=24.03%, avg=119.19, stdev=70.39, samples=99 iops : min= 1, max= 23, avg= 6.64, stdev= 4.44, samples=99 lat (msec) : 10=0.52%, 20=8.85%, 50=41.02%, 100=30.34%, 250=18.36% lat (msec) : 500=0.91% cpu : usr=0.06%, sys=1.47%, ctx=1181, 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=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=195099: Tue Aug 25 19:23:54 2026 read: IOPS=7, BW=121KiB/s (123kB/s)(6032KiB/50038msec) clat (msec): min=7, max=342, avg=53.37, stdev=45.43 lat (msec): min=7, max=342, avg=53.37, stdev=45.43 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 39], 60.00th=[ 46], | 70.00th=[ 54], 80.00th=[ 74], 90.00th=[ 109], 95.00th=[ 153], | 99.00th=[ 220], 99.50th=[ 259], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 31, max= 380, per=26.64%, avg=125.45, stdev=73.77, samples=93 iops : min= 1, max= 23, avg= 7.04, stdev= 4.64, samples=93 write: IOPS=7, BW=125KiB/s (128kB/s)(6256KiB/50038msec); 0 zone resets clat (msec): min=16, max=353, avg=75.87, stdev=50.06 lat (msec): min=16, max=353, avg=75.87, stdev=50.06 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 37], | 30.00th=[ 44], 40.00th=[ 52], 50.00th=[ 59], 60.00th=[ 72], | 70.00th=[ 89], 80.00th=[ 108], 90.00th=[ 140], 95.00th=[ 178], | 99.00th=[ 251], 99.50th=[ 288], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 30, max= 377, per=25.39%, avg=125.92, stdev=70.38, samples=97 iops : min= 1, max= 23, avg= 7.06, stdev= 4.43, samples=97 lat (msec) : 10=0.26%, 20=7.55%, 50=44.53%, 100=28.39%, 250=18.23% lat (msec) : 500=1.04% cpu : usr=0.03%, sys=1.31%, ctx=1178, 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=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=472KiB/s (483kB/s), 113KiB/s-123KiB/s (116kB/s-126kB/s), io=23.4MiB (24.5MB), run=50038-50770msec WRITE: bw=496KiB/s (508kB/s), 119KiB/s-129KiB/s (122kB/s-132kB/s), io=24.6MiB (25.8MB), run=50038-50770msec 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=195119: Tue Aug 25 19:24:12 2026 read: IOPS=1, BW=1172KiB/s (1200kB/s)(7168KiB/6117msec) clat (usec): min=455, max=4130.3k, avg=702384.42, stdev=1514626.08 lat (usec): min=456, max=4130.3k, avg=702385.86, stdev=1514626.03 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 457], 10.00th=[ 457], | 20.00th=[ 498], 30.00th=[ 170918], 40.00th=[ 170918], | 50.00th=[ 173016], 60.00th=[ 185598], 70.00th=[ 185598], | 80.00th=[ 252707], 90.00th=[4143973], 95.00th=[4143973], | 99.00th=[4143973], 99.50th=[4143973], 99.90th=[4143973], | 99.95th=[4143973], 99.99th=[4143973] bw ( KiB/s): min= 1984, max= 4023, per=80.37%, avg=2690.75, stdev=946.54, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=0, BW=837KiB/s (857kB/s)(5120KiB/6117msec); 0 zone resets clat (msec): min=135, max=261, avg=184.28, stdev=53.52 lat (msec): min=135, max=261, avg=184.34, stdev=53.50 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 155], 60.00th=[ 155], | 70.00th=[ 220], 80.00th=[ 220], 90.00th=[ 262], 95.00th=[ 262], | 99.00th=[ 262], 99.50th=[ 262], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 2011, max= 5953, per=84.96%, avg=3982.00, stdev=2787.41, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (usec) : 500=16.67% lat (msec) : 250=58.33%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=7.91%, ctx=426, 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=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=195120: Tue Aug 25 19:24:12 2026 read: IOPS=0, BW=358KiB/s (366kB/s)(2048KiB/5728msec) clat (msec): min=151, max=319, avg=235.34, stdev=118.77 lat (msec): min=151, max=319, avg=235.34, stdev=118.77 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 321], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 1361, max= 2048, per=50.91%, avg=1704.50, stdev=485.78, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1788KiB/s (1831kB/s)(10.0MiB/5728msec); 0 zone resets clat (msec): min=199, max=1726, avg=496.90, stdev=455.34 lat (msec): min=199, max=1726, avg=496.99, stdev=455.35 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 209], | 30.00th=[ 262], 40.00th=[ 271], 50.00th=[ 296], 60.00th=[ 401], | 70.00th=[ 418], 80.00th=[ 584], 90.00th=[ 609], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 1924, max= 4055, per=63.78%, avg=2989.17, stdev=1097.17, samples=6 iops : min= 1, max= 3, avg= 2.00, stdev= 1.10, samples=6 lat (msec) : 250=25.00%, 500=50.00%, 750=16.67%, 2000=8.33% cpu : usr=0.10%, sys=8.43%, ctx=115, 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=195121: Tue Aug 25 19:24:12 2026 read: IOPS=1, BW=1065KiB/s (1091kB/s)(6144KiB/5768msec) clat (usec): min=1018, max=541912, avg=182912.88, stdev=220815.21 lat (usec): min=1019, max=541913, avg=182914.26, stdev=220814.98 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1020], 10.00th=[ 1020], 20.00th=[ 1172], | 30.00th=[ 1172], 40.00th=[ 4113], 50.00th=[ 4113], 60.00th=[274727], | 70.00th=[274727], 80.00th=[274727], 90.00th=[541066], 95.00th=[541066], | 99.00th=[541066], 99.50th=[541066], 99.90th=[541066], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 1969, max= 5907, per=98.56%, avg=3299.67, stdev=2258.18, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=1, BW=1065KiB/s (1091kB/s)(6144KiB/5768msec); 0 zone resets clat (msec): min=238, max=2514, avg=769.37, stdev=869.39 lat (msec): min=238, max=2515, avg=769.75, stdev=869.37 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 481], | 70.00th=[ 684], 80.00th=[ 684], 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= 1969, max= 2027, per=42.63%, avg=1998.20, stdev=23.97, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 2=16.67%, 10=8.33%, 250=8.33%, 500=41.67%, 750=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.05%, sys=7.25%, 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=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=195122: Tue Aug 25 19:24:12 2026 read: IOPS=0, BW=931KiB/s (953kB/s)(5120KiB/5500msec) clat (usec): min=348, max=865487, avg=229133.87, stdev=375304.49 lat (usec): min=348, max=865489, avg=229134.86, stdev=375304.68 clat percentiles (usec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 676], 40.00th=[ 676], 50.00th=[ 1926], 60.00th=[ 1926], | 70.00th=[278922], 80.00th=[278922], 90.00th=[868221], 95.00th=[868221], | 99.00th=[868221], 99.50th=[868221], 99.90th=[868221], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 1924, max= 6144, per=100.00%, avg=4034.00, stdev=2983.99, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1303KiB/s (1335kB/s)(7168KiB/5500msec); 0 zone resets clat (msec): min=167, max=2348, avg=600.85, stdev=789.19 lat (msec): min=167, max=2348, avg=600.98, stdev=789.18 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 176], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 292], 60.00th=[ 347], | 70.00th=[ 347], 80.00th=[ 659], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 1365, max= 4023, per=60.66%, avg=2843.00, stdev=1350.10, 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) : 2=8.33%, 250=25.00%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.05%, sys=8.06%, ctx=222, 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=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=3348KiB/s (3428kB/s), 358KiB/s-1172KiB/s (366kB/s-1200kB/s), io=20.0MiB (20.0MB), run=5500-6117msec WRITE: bw=4687KiB/s (4800kB/s), 837KiB/s-1788KiB/s (857kB/s-1831kB/s), io=28.0MiB (29.4MB), run=5500-6117msec rand-rw: (groupid=0, jobs=1): err= 0: pid=195114: Tue Aug 25 19:24:13 2026 read: IOPS=1, BW=1839KiB/s (1884kB/s)(7168KiB/3897msec) clat (msec): min=103, max=994, avg=296.12, stdev=338.63 lat (msec): min=103, max=994, avg=296.12, stdev=338.63 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 105], | 30.00th=[ 108], 40.00th=[ 108], 50.00th=[ 109], 60.00th=[ 163], | 70.00th=[ 163], 80.00th=[ 493], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 1914, max= 4185, per=85.58%, avg=2523.75, stdev=1108.46, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1314KiB/s (1345kB/s)(5120KiB/3897msec); 0 zone resets clat (msec): min=146, max=615, avg=353.10, stdev=220.95 lat (msec): min=146, max=615, avg=353.19, stdev=220.95 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 1980, max= 4055, per=81.26%, avg=3355.33, stdev=1191.13, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 250=58.33%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.03%, sys=4.08%, ctx=73, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195115: Tue Aug 25 19:24:13 2026 read: IOPS=0, BW=300KiB/s (307kB/s)(2048KiB/6834msec) clat (msec): min=137, max=668, avg=403.37, stdev=375.46 lat (msec): min=137, max=668, avg=403.37, stdev=375.46 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 667], 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= 1980, max= 2027, per=67.94%, avg=2003.50, stdev=33.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1498KiB/s (1534kB/s)(10.0MiB/6834msec); 0 zone resets clat (msec): min=167, max=2114, avg=573.90, stdev=588.78 lat (msec): min=167, max=2114, avg=574.00, stdev=588.77 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 241], | 30.00th=[ 243], 40.00th=[ 247], 50.00th=[ 296], 60.00th=[ 368], | 70.00th=[ 514], 80.00th=[ 625], 90.00th=[ 927], 95.00th=[ 2123], | 99.00th=[ 2123], 99.50th=[ 2123], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 1914, max= 6095, per=77.67%, avg=3207.20, stdev=1845.02, samples=5 iops : min= 1, max= 5, avg= 2.20, stdev= 1.79, samples=5 lat (msec) : 250=41.67%, 500=16.67%, 750=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.94%, ctx=131, 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=195116: Tue Aug 25 19:24:13 2026 read: IOPS=0, BW=885KiB/s (906kB/s)(6144KiB/6943msec) clat (msec): min=122, max=884, avg=355.77, stdev=299.63 lat (msec): min=122, max=884, avg=355.77, stdev=299.63 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 178], 50.00th=[ 178], 60.00th=[ 257], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 1914, max= 2031, per=67.70%, avg=1996.60, stdev=48.14, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=0, BW=885KiB/s (906kB/s)(6144KiB/6943msec); 0 zone resets clat (msec): min=140, max=2451, avg=774.12, stdev=874.47 lat (msec): min=140, max=2451, avg=774.21, stdev=874.47 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 726], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 1950, max= 3961, per=57.96%, avg=2393.00, stdev=877.14, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=41.67%, 500=16.67%, 750=16.67%, 1000=16.67%, >=2000=8.33% cpu : usr=0.01%, sys=1.96%, ctx=61, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195117: Tue Aug 25 19:24:13 2026 read: IOPS=0, BW=749KiB/s (767kB/s)(5120KiB/6837msec) clat (msec): min=93, max=195, avg=143.31, stdev=42.89 lat (msec): min=93, max=195, avg=143.31, stdev=42.89 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 94], | 30.00th=[ 116], 40.00th=[ 116], 50.00th=[ 134], 60.00th=[ 134], | 70.00th=[ 180], 80.00th=[ 180], 90.00th=[ 197], 95.00th=[ 197], | 99.00th=[ 197], 99.50th=[ 197], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 2031, max= 6083, per=100.00%, avg=4057.00, stdev=2865.20, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1048KiB/s (1074kB/s)(7168KiB/6837msec); 0 zone resets clat (msec): min=116, max=2318, avg=833.82, stdev=691.36 lat (msec): min=116, max=2318, avg=834.13, stdev=691.31 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 550], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 760], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 1914, max= 3992, per=56.11%, avg=2316.83, stdev=821.67, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 750=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=3.50%, ctx=104, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2950KiB/s (3021kB/s), 300KiB/s-1839KiB/s (307kB/s-1884kB/s), io=20.0MiB (20.0MB), run=3897-6943msec WRITE: bw=4130KiB/s (4229kB/s), 885KiB/s-1498KiB/s (906kB/s-1534kB/s), io=28.0MiB (29.4MB), run=3897-6943msec 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=195129: Tue Aug 25 19:24:29 2026 read: IOPS=0, BW=3807KiB/s (3898kB/s)(12.0MiB/3228msec) clat (msec): min=875, max=1137, avg=1036.66, stdev=141.21 lat (msec): min=875, max=1137, avg=1036.67, stdev=141.21 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 8000, max= 8175, per=100.00%, avg=8087.50, stdev=123.74, 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=0.00%, sys=8.27%, ctx=300, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195130: Tue Aug 25 19:24:29 2026 read: IOPS=0, BW=1210KiB/s (1239kB/s)(4096KiB/3384msec) clat (nsec): min=621635k, max=621635k, avg=621634834.00, stdev= 0.00 lat (nsec): min=621638k, max=621638k, avg=621638129.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2421KiB/s (2479kB/s)(8192KiB/3384msec); 0 zone resets clat (msec): min=1077, max=1648, avg=1363.04, stdev=403.67 lat (msec): min=1081, max=1649, avg=1365.21, stdev=401.78 clat percentiles (msec): | 1.00th=[ 1083], 5.00th=[ 1083], 10.00th=[ 1083], 20.00th=[ 1083], | 30.00th=[ 1083], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1653], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 7892, max= 7892, per=84.23%, avg=7892.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.96%, ctx=88, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195131: Tue Aug 25 19:24:29 2026 write: IOPS=0, BW=3514KiB/s (3598kB/s)(12.0MiB/3497msec); 0 zone resets clat (msec): min=893, max=1447, avg=1147.04, stdev=279.81 lat (msec): min=893, max=1449, avg=1147.92, stdev=280.72 clat percentiles (msec): | 1.00th=[ 894], 5.00th=[ 894], 10.00th=[ 894], 20.00th=[ 894], | 30.00th=[ 894], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 1452], 80.00th=[ 1452], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 8031, max= 8143, per=86.31%, avg=8087.00, stdev=79.20, 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=0.03%, sys=3.69%, ctx=67, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195133: Tue Aug 25 19:24:29 2026 write: IOPS=0, BW=3848KiB/s (3941kB/s)(12.0MiB/3193msec); 0 zone resets clat (msec): min=646, max=1650, avg=1043.27, stdev=533.88 lat (msec): min=646, max=1650, avg=1043.81, stdev=533.75 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 8143, max= 8159, per=86.99%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=2.88%, ctx=65, 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=4842KiB/s (4958kB/s), 1210KiB/s-3807KiB/s (1239kB/s-3898kB/s), io=16.0MiB (16.8MB), run=3228-3384msec WRITE: bw=9370KiB/s (9595kB/s), 2421KiB/s-3848KiB/s (2479kB/s-3941kB/s), io=32.0MiB (33.6MB), run=3193-3497msec rand-rw: (groupid=0, jobs=1): err= 0: pid=195134: Tue Aug 25 19:24:30 2026 read: IOPS=0, BW=3399KiB/s (3481kB/s)(12.0MiB/3615msec) clat (msec): min=572, max=2100, avg=1176.87, stdev=812.68 lat (msec): min=572, max=2100, avg=1176.88, stdev=812.68 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 2106], 80.00th=[ 2106], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 7907, max= 8000, per=100.00%, avg=7953.50, stdev=65.76, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.17%, sys=3.21%, ctx=53, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=195135: Tue Aug 25 19:24:30 2026 read: IOPS=0, BW=1015KiB/s (1040kB/s)(4096KiB/4034msec) clat (nsec): min=1297.3M, max=1297.3M, avg=1297256343.00, stdev= 0.00 lat (nsec): min=1297.3M, max=1297.3M, avg=1297259063.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1301], 5.00th=[ 1301], 10.00th=[ 1301], 20.00th=[ 1301], | 30.00th=[ 1301], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7907, max= 7907, per=100.00%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2031KiB/s (2079kB/s)(8192KiB/4034msec); 0 zone resets clat (msec): min=606, max=2032, avg=1319.22, stdev=1008.35 lat (msec): min=608, max=2032, avg=1320.45, stdev=1007.12 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 2039], | 70.00th=[ 2039], 80.00th=[ 2039], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.12%, sys=3.57%, 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=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=195136: Tue Aug 25 19:24:30 2026 write: IOPS=0, BW=3080KiB/s (3154kB/s)(12.0MiB/3990msec); 0 zone resets clat (msec): min=440, max=2346, avg=1259.32, stdev=980.90 lat (msec): min=440, max=2348, avg=1260.06, stdev=981.71 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7907, max= 8126, per=98.70%, avg=8016.50, stdev=154.86, 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=2.03%, ctx=42, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=195137: Tue Aug 25 19:24:30 2026 write: IOPS=0, BW=3677KiB/s (3765kB/s)(12.0MiB/3342msec); 0 zone resets clat (msec): min=698, max=1239, avg=1035.76, stdev=294.30 lat (msec): min=698, max=1240, avg=1036.02, stdev=294.36 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 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= 7907, max= 8000, per=97.93%, avg=7953.50, stdev=65.76, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.59%, ctx=46, 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=4061KiB/s (4159kB/s), 1015KiB/s-3399KiB/s (1040kB/s-3481kB/s), io=16.0MiB (16.8MB), run=3615-4034msec WRITE: bw=8123KiB/s (8318kB/s), 2031KiB/s-3677KiB/s (2079kB/s-3765kB/s), io=32.0MiB (33.6MB), run=3342-4034msec