== sanity test 398b: DIO and buffer IO race ============== 00:12:01 (1787371921) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.5944 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=179045: Sat Aug 22 00:14:24 2026 read: IOPS=12, BW=50.3KiB/s (51.5kB/s)(5992KiB/119053msec) clat (usec): min=39, max=793472, avg=44047.22, stdev=36250.28 lat (usec): min=39, max=793473, avg=44049.80, stdev=36249.79 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 11469], 10.00th=[ 16581], 20.00th=[ 22152], | 30.00th=[ 26870], 40.00th=[ 31327], 50.00th=[ 36439], 60.00th=[ 43254], | 70.00th=[ 50070], 80.00th=[ 61080], 90.00th=[ 77071], 95.00th=[ 94897], | 99.00th=[173016], 99.50th=[206570], 99.90th=[379585], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 8, max= 95, per=25.54%, avg=49.81, stdev=18.91, samples=234 iops : min= 2, max= 23, avg=11.82, stdev= 4.77, samples=234 write: IOPS=13, BW=52.9KiB/s (54.2kB/s)(6296KiB/119053msec); 0 zone resets clat (usec): min=976, max=363167, avg=33569.42, stdev=35492.58 lat (usec): min=978, max=363168, avg=33583.81, stdev=35492.45 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1254], 10.00th=[ 1680], 20.00th=[ 3720], | 30.00th=[ 6587], 40.00th=[ 14877], 50.00th=[ 25035], 60.00th=[ 32900], | 70.00th=[ 42206], 80.00th=[ 58459], 90.00th=[ 81265], 95.00th=[102237], | 99.00th=[149947], 99.50th=[164627], 99.90th=[270533], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 7, max= 151, per=25.71%, avg=52.46, stdev=22.57, samples=234 iops : min= 1, max= 37, avg=12.48, stdev= 5.70, samples=234 lat (usec) : 50=0.26%, 100=1.40%, 250=0.10%, 500=0.03%, 1000=0.07% lat (msec) : 2=6.45%, 4=4.62%, 10=7.42%, 20=10.58%, 50=41.44% lat (msec) : 100=22.75%, 250=4.72%, 500=0.13%, 1000=0.03% cpu : usr=0.09%, sys=5.29%, ctx=6442, 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=179046: Sat Aug 22 00:14:24 2026 read: IOPS=12, BW=50.1KiB/s (51.3kB/s)(5940KiB/118531msec) clat (usec): min=39, max=895647, avg=43863.93, stdev=35822.86 lat (usec): min=39, max=895648, avg=43867.53, stdev=35822.48 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 11863], 10.00th=[ 16319], 20.00th=[ 22414], | 30.00th=[ 26870], 40.00th=[ 31589], 50.00th=[ 37487], 60.00th=[ 43779], | 70.00th=[ 52167], 80.00th=[ 61080], 90.00th=[ 76022], 95.00th=[ 93848], | 99.00th=[147850], 99.50th=[173016], 99.90th=[223347], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 7, max= 117, per=25.60%, avg=49.91, stdev=19.43, samples=231 iops : min= 1, max= 29, avg=11.82, stdev= 4.91, samples=231 write: IOPS=13, BW=53.6KiB/s (54.8kB/s)(6348KiB/118531msec); 0 zone resets clat (usec): min=972, max=271777, avg=33534.67, stdev=35719.28 lat (usec): min=973, max=271779, avg=33538.90, stdev=35719.68 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1205], 10.00th=[ 1532], 20.00th=[ 3720], | 30.00th=[ 6652], 40.00th=[ 14222], 50.00th=[ 22676], 60.00th=[ 31065], | 70.00th=[ 42730], 80.00th=[ 58983], 90.00th=[ 83362], 95.00th=[101188], | 99.00th=[147850], 99.50th=[179307], 99.90th=[219153], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 15, max= 119, per=25.99%, avg=53.03, stdev=22.39, samples=232 iops : min= 3, max= 29, avg=12.60, stdev= 5.62, samples=232 lat (usec) : 50=0.23%, 100=1.24%, 250=0.23%, 500=0.07%, 1000=0.10% lat (msec) : 2=6.38%, 4=4.33%, 10=8.27%, 20=10.77%, 50=39.49% lat (msec) : 100=24.32%, 250=4.52%, 500=0.03%, 1000=0.03% cpu : usr=0.08%, sys=5.30%, ctx=6431, 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=179047: Sat Aug 22 00:14:24 2026 read: IOPS=12, BW=49.2KiB/s (50.3kB/s)(6028KiB/122637msec) clat (usec): min=43, max=303338, avg=43813.54, stdev=30278.64 lat (usec): min=44, max=303339, avg=43816.94, stdev=30277.94 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 9372], 10.00th=[ 15795], 20.00th=[ 21627], | 30.00th=[ 26346], 40.00th=[ 32113], 50.00th=[ 38011], 60.00th=[ 44303], | 70.00th=[ 52167], 80.00th=[ 61080], 90.00th=[ 78119], 95.00th=[ 98042], | 99.00th=[152044], 99.50th=[181404], 99.90th=[242222], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 7, max= 119, per=25.17%, avg=49.08, stdev=20.10, samples=240 iops : min= 1, max= 29, avg=11.62, stdev= 5.03, samples=240 write: IOPS=12, BW=51.0KiB/s (52.3kB/s)(6260KiB/122637msec); 0 zone resets clat (usec): min=945, max=921665, avg=36058.61, stdev=44111.72 lat (usec): min=945, max=921667, avg=36060.59, stdev=44111.60 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1156], 10.00th=[ 1434], 20.00th=[ 3392], | 30.00th=[ 7046], 40.00th=[ 16188], 50.00th=[ 24773], 60.00th=[ 33162], | 70.00th=[ 45876], 80.00th=[ 62129], 90.00th=[ 85459], 95.00th=[108528], | 99.00th=[162530], 99.50th=[200279], 99.90th=[312476], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 7, max= 127, per=24.96%, avg=50.92, stdev=22.01, samples=240 iops : min= 1, max= 31, avg=12.08, stdev= 5.53, samples=240 lat (usec) : 50=0.36%, 100=1.56%, 250=0.16%, 1000=0.23% lat (msec) : 2=6.54%, 4=4.23%, 10=6.74%, 20=10.74%, 50=39.13% lat (msec) : 100=25.13%, 250=5.01%, 500=0.13%, 1000=0.03% cpu : usr=0.08%, sys=5.20%, ctx=6449, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179048: Sat Aug 22 00:14:24 2026 read: IOPS=12, BW=50.9KiB/s (52.1kB/s)(6052KiB/118948msec) clat (usec): min=36, max=221203, avg=42845.42, stdev=27640.75 lat (usec): min=36, max=221204, avg=42848.20, stdev=27639.72 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 10028], 10.00th=[ 16319], 20.00th=[ 21627], | 30.00th=[ 26608], 40.00th=[ 31589], 50.00th=[ 36963], 60.00th=[ 43254], | 70.00th=[ 52167], 80.00th=[ 61604], 90.00th=[ 76022], 95.00th=[ 93848], | 99.00th=[139461], 99.50th=[156238], 99.90th=[191890], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 7, max= 118, per=26.06%, avg=50.81, stdev=18.27, samples=232 iops : min= 1, max= 29, avg=12.06, stdev= 4.60, samples=232 write: IOPS=13, BW=52.4KiB/s (53.7kB/s)(6236KiB/118948msec); 0 zone resets clat (usec): min=925, max=901889, avg=34605.93, stdev=40828.58 lat (usec): min=927, max=901892, avg=34609.23, stdev=40830.81 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1582], 20.00th=[ 3621], | 30.00th=[ 6915], 40.00th=[ 14877], 50.00th=[ 25297], 60.00th=[ 33817], | 70.00th=[ 45351], 80.00th=[ 61604], 90.00th=[ 82314], 95.00th=[101188], | 99.00th=[141558], 99.50th=[173016], 99.90th=[219153], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 7, max= 119, per=25.53%, avg=52.07, stdev=21.98, samples=233 iops : min= 1, max= 29, avg=12.37, stdev= 5.52, samples=233 lat (usec) : 50=0.33%, 100=1.56%, 250=0.13%, 750=0.03%, 1000=0.16% lat (msec) : 2=6.38%, 4=4.26%, 10=7.52%, 20=10.45%, 50=39.94% lat (msec) : 100=24.64%, 250=4.56%, 1000=0.03% cpu : usr=0.09%, sys=5.37%, ctx=6524, 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=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=196KiB/s (200kB/s), 49.2KiB/s-50.9KiB/s (50.3kB/s-52.1kB/s), io=23.4MiB (24.6MB), run=118531-122637msec WRITE: bw=205KiB/s (210kB/s), 51.0KiB/s-53.6KiB/s (52.3kB/s-54.8kB/s), io=24.6MiB (25.7MB), run=118531-122637msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179040: Sat Aug 22 00:15:03 2026 read: IOPS=9, BW=37.2KiB/s (38.1kB/s)(5992KiB/161090msec) clat (msec): min=5, max=878, avg=41.88, stdev=44.44 lat (msec): min=5, max=878, avg=41.88, stdev=44.44 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 62], 90.00th=[ 94], 95.00th=[ 122], | 99.00th=[ 190], 99.50th=[ 241], 99.90th=[ 347], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 135, per=25.25%, avg=37.36, stdev=25.78, samples=311 iops : min= 1, max= 33, avg= 8.69, stdev= 6.51, samples=311 write: IOPS=9, BW=39.1KiB/s (40.0kB/s)(6296KiB/161090msec); 0 zone resets clat (msec): min=9, max=386, avg=62.16, stdev=43.59 lat (msec): min=9, max=386, avg=62.16, stdev=43.59 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 58], | 70.00th=[ 71], 80.00th=[ 93], 90.00th=[ 121], 95.00th=[ 148], | 99.00th=[ 203], 99.50th=[ 241], 99.90th=[ 359], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 7, max= 119, per=25.19%, avg=39.04, stdev=24.39, samples=313 iops : min= 1, max= 29, avg= 9.11, stdev= 6.15, samples=313 lat (msec) : 10=2.41%, 20=16.41%, 50=45.05%, 100=23.21%, 250=12.57% lat (msec) : 500=0.33%, 1000=0.03% cpu : usr=0.06%, sys=1.79%, ctx=4804, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179041: Sat Aug 22 00:15:03 2026 read: IOPS=9, BW=36.7KiB/s (37.5kB/s)(5940KiB/161999msec) clat (msec): min=4, max=952, avg=42.61, stdev=45.33 lat (msec): min=4, max=952, avg=42.61, stdev=45.33 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 44], 80.00th=[ 63], 90.00th=[ 94], 95.00th=[ 128], | 99.00th=[ 184], 99.50th=[ 215], 99.90th=[ 279], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 151, per=25.17%, avg=37.25, stdev=25.55, samples=310 iops : min= 1, max= 37, avg= 8.65, stdev= 6.45, samples=310 write: IOPS=9, BW=39.2KiB/s (40.1kB/s)(6348KiB/161999msec); 0 zone resets clat (msec): min=9, max=394, avg=61.89, stdev=45.59 lat (msec): min=9, max=394, avg=61.89, stdev=45.59 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 90], 90.00th=[ 122], 95.00th=[ 153], | 99.00th=[ 224], 99.50th=[ 292], 99.90th=[ 363], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 126, per=25.02%, avg=38.79, stdev=25.12, samples=317 iops : min= 1, max= 31, avg= 9.05, stdev= 6.37, samples=317 lat (msec) : 10=2.28%, 20=16.47%, 50=44.86%, 100=23.63%, 250=12.24% lat (msec) : 500=0.49%, 1000=0.03% cpu : usr=0.05%, sys=1.86%, ctx=4929, 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=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=179042: Sat Aug 22 00:15:03 2026 read: IOPS=9, BW=37.3KiB/s (38.2kB/s)(6028KiB/161714msec) clat (msec): min=5, max=286, avg=41.89, stdev=39.23 lat (msec): min=5, max=286, avg=41.89, stdev=39.23 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 58], 90.00th=[ 96], 95.00th=[ 127], | 99.00th=[ 188], 99.50th=[ 226], 99.90th=[ 279], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 7, max= 150, per=25.15%, avg=37.22, stdev=25.27, samples=314 iops : min= 1, max= 37, avg= 8.65, stdev= 6.39, samples=314 write: IOPS=9, BW=38.7KiB/s (39.6kB/s)(6260KiB/161714msec); 0 zone resets clat (msec): min=11, max=978, avg=62.65, stdev=48.84 lat (msec): min=11, max=978, avg=62.66, stdev=48.83 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 48], 60.00th=[ 58], | 70.00th=[ 71], 80.00th=[ 92], 90.00th=[ 123], 95.00th=[ 146], | 99.00th=[ 224], 99.50th=[ 279], 99.90th=[ 326], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 120, per=24.90%, avg=38.60, stdev=23.86, samples=314 iops : min= 1, max= 30, avg= 9.00, stdev= 6.02, samples=314 lat (msec) : 10=2.28%, 20=15.69%, 50=45.28%, 100=24.38%, 250=11.95% lat (msec) : 500=0.39%, 1000=0.03% cpu : usr=0.06%, sys=1.79%, ctx=4738, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179043: Sat Aug 22 00:15:03 2026 read: IOPS=9, BW=37.4KiB/s (38.3kB/s)(6052KiB/161651msec) clat (msec): min=6, max=347, avg=41.05, stdev=39.03 lat (msec): min=6, max=347, avg=41.06, stdev=39.03 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 58], 90.00th=[ 95], 95.00th=[ 125], | 99.00th=[ 176], 99.50th=[ 236], 99.90th=[ 279], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 159, per=25.81%, avg=38.20, stdev=26.26, samples=307 iops : min= 1, max= 39, avg= 8.90, stdev= 6.64, samples=307 write: IOPS=9, BW=38.6KiB/s (39.5kB/s)(6236KiB/161651msec); 0 zone resets clat (msec): min=10, max=972, avg=63.52, stdev=52.17 lat (msec): min=10, max=972, avg=63.52, stdev=52.17 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 72], 80.00th=[ 91], 90.00th=[ 125], 95.00th=[ 153], | 99.00th=[ 234], 99.50th=[ 292], 99.90th=[ 409], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7, max= 115, per=24.74%, avg=38.34, stdev=24.11, samples=315 iops : min= 1, max= 28, avg= 8.93, stdev= 6.09, samples=315 lat (msec) : 10=2.80%, 20=15.69%, 50=46.71%, 100=21.74%, 250=12.47% lat (msec) : 500=0.55%, 1000=0.03% cpu : usr=0.07%, sys=1.90%, ctx=4923, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=148KiB/s (152kB/s), 36.7KiB/s-37.4KiB/s (37.5kB/s-38.3kB/s), io=23.4MiB (24.6MB), run=161090-161999msec WRITE: bw=155KiB/s (159kB/s), 38.6KiB/s-39.2KiB/s (39.5kB/s-40.1kB/s), io=24.6MiB (25.7MB), run=161090-161999msec 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=179095: Sat Aug 22 00:15:47 2026 read: IOPS=11, BW=177KiB/s (182kB/s)(5920KiB/33375msec) clat (usec): min=33, max=182507, avg=45904.67, stdev=32773.73 lat (usec): min=33, max=182508, avg=45911.49, stdev=32778.41 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 76], 10.00th=[ 97], 20.00th=[ 21365], | 30.00th=[ 28705], 40.00th=[ 35914], 50.00th=[ 42730], 60.00th=[ 50594], | 70.00th=[ 57410], 80.00th=[ 66847], 90.00th=[ 84411], 95.00th=[105382], | 99.00th=[162530], 99.50th=[173016], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 31, max= 286, per=24.39%, avg=174.88, stdev=70.25, samples=65 iops : min= 1, max= 17, avg=10.11, stdev= 4.42, samples=65 write: IOPS=11, BW=191KiB/s (195kB/s)(6368KiB/33375msec); 0 zone resets clat (usec): min=1322, max=189375, avg=40470.80, stdev=37704.63 lat (usec): min=1324, max=189376, avg=40485.52, stdev=37695.72 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2442], 10.00th=[ 3720], 20.00th=[ 7373], | 30.00th=[ 11731], 40.00th=[ 20841], 50.00th=[ 30016], 60.00th=[ 40109], | 70.00th=[ 53740], 80.00th=[ 70779], 90.00th=[ 95945], 95.00th=[111674], | 99.00th=[168821], 99.50th=[185598], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 31, max= 474, per=25.18%, avg=190.12, stdev=77.05, samples=65 iops : min= 1, max= 29, avg=11.08, stdev= 4.86, samples=65 lat (usec) : 50=0.39%, 100=4.56%, 250=1.69% lat (msec) : 2=1.95%, 4=4.43%, 10=8.33%, 20=7.68%, 50=34.90% lat (msec) : 100=29.17%, 250=6.90% cpu : usr=0.10%, sys=6.09%, ctx=1742, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179096: Sat Aug 22 00:15:47 2026 read: IOPS=11, BW=177KiB/s (181kB/s)(5744KiB/32420msec) clat (usec): min=48, max=187317, avg=47312.98, stdev=29455.83 lat (usec): min=49, max=187319, avg=47314.32, stdev=29455.86 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 75], 10.00th=[ 273], 20.00th=[ 26084], | 30.00th=[ 31851], 40.00th=[ 36963], 50.00th=[ 43254], 60.00th=[ 50594], | 70.00th=[ 58983], 80.00th=[ 69731], 90.00th=[ 86508], 95.00th=[103285], | 99.00th=[133694], 99.50th=[139461], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 62, max= 319, per=24.76%, avg=177.56, stdev=67.37, samples=63 iops : min= 3, max= 19, avg=10.29, stdev= 4.21, samples=63 write: IOPS=12, BW=202KiB/s (207kB/s)(6544KiB/32420msec); 0 zone resets clat (usec): min=1566, max=163730, avg=37538.32, stdev=33692.96 lat (usec): min=1568, max=163733, avg=37540.83, stdev=33693.01 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2671], 10.00th=[ 4113], 20.00th=[ 6980], | 30.00th=[ 11076], 40.00th=[ 19006], 50.00th=[ 28181], 60.00th=[ 38536], | 70.00th=[ 49021], 80.00th=[ 65799], 90.00th=[ 84411], 95.00th=[103285], | 99.00th=[141558], 99.50th=[154141], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 63, max= 412, per=26.72%, avg=201.76, stdev=73.09, samples=63 iops : min= 3, max= 25, avg=11.81, stdev= 4.58, samples=63 lat (usec) : 50=0.13%, 100=3.12%, 250=1.30%, 500=0.26%, 1000=0.13% lat (msec) : 2=1.56%, 4=3.65%, 10=9.24%, 20=8.98%, 50=36.98% lat (msec) : 100=28.91%, 250=5.73% cpu : usr=0.10%, sys=6.48%, ctx=1656, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179097: Sat Aug 22 00:15:47 2026 read: IOPS=11, BW=189KiB/s (194kB/s)(6256KiB/33026msec) clat (usec): min=43, max=252130, avg=46882.70, stdev=33765.40 lat (usec): min=43, max=252132, avg=46884.43, stdev=33765.33 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 73], 10.00th=[ 101], 20.00th=[ 22152], | 30.00th=[ 29492], 40.00th=[ 35914], 50.00th=[ 42730], 60.00th=[ 51119], | 70.00th=[ 58983], 80.00th=[ 70779], 90.00th=[ 89654], 95.00th=[103285], | 99.00th=[160433], 99.50th=[170918], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 28, max= 380, per=26.46%, avg=189.69, stdev=64.14, samples=65 iops : min= 1, max= 23, avg=11.05, stdev= 4.04, samples=65 write: IOPS=11, BW=183KiB/s (187kB/s)(6032KiB/33026msec); 0 zone resets clat (usec): min=1321, max=183544, avg=38000.53, stdev=35309.36 lat (usec): min=1323, max=183547, avg=38012.37, stdev=35312.78 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 2057], 10.00th=[ 3097], 20.00th=[ 6194], | 30.00th=[ 11207], 40.00th=[ 17171], 50.00th=[ 27395], 60.00th=[ 38536], | 70.00th=[ 50594], 80.00th=[ 69731], 90.00th=[ 90702], 95.00th=[107480], | 99.00th=[129500], 99.50th=[179307], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 62, max= 412, per=23.96%, avg=180.91, stdev=76.26, samples=65 iops : min= 3, max= 25, avg=10.49, stdev= 4.80, samples=65 lat (usec) : 50=0.65%, 100=4.43%, 250=1.69%, 500=0.13%, 750=0.26% lat (msec) : 2=2.60%, 4=3.91%, 10=7.42%, 20=8.59%, 50=34.51% lat (msec) : 100=29.43%, 250=6.25%, 500=0.13% cpu : usr=0.06%, sys=6.07%, ctx=1740, 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=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=179098: Sat Aug 22 00:15:47 2026 read: IOPS=11, BW=186KiB/s (191kB/s)(6032KiB/32362msec) clat (usec): min=45, max=209640, avg=45910.83, stdev=31624.90 lat (usec): min=46, max=209642, avg=45915.48, stdev=31626.71 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 68], 10.00th=[ 78], 20.00th=[ 23462], | 30.00th=[ 31065], 40.00th=[ 36963], 50.00th=[ 43779], 60.00th=[ 50594], | 70.00th=[ 60556], 80.00th=[ 68682], 90.00th=[ 82314], 95.00th=[102237], | 99.00th=[132645], 99.50th=[193987], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 29, max= 285, per=25.89%, avg=185.67, stdev=65.41, samples=63 iops : min= 1, max= 17, avg=10.79, stdev= 4.11, samples=63 write: IOPS=12, BW=193KiB/s (198kB/s)(6256KiB/32362msec); 0 zone resets clat (usec): min=1593, max=209791, avg=37635.89, stdev=37130.80 lat (usec): min=1595, max=209794, avg=37638.38, stdev=37130.69 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2409], 10.00th=[ 3621], 20.00th=[ 6128], | 30.00th=[ 10028], 40.00th=[ 17433], 50.00th=[ 25560], 60.00th=[ 35390], | 70.00th=[ 48497], 80.00th=[ 66847], 90.00th=[ 87557], 95.00th=[107480], | 99.00th=[170918], 99.50th=[187696], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 31, max= 380, per=25.78%, avg=194.62, stdev=79.10, samples=63 iops : min= 1, max= 23, avg=11.37, stdev= 4.97, samples=63 lat (usec) : 50=0.13%, 100=6.38%, 250=0.52%, 500=0.26%, 750=0.26% lat (msec) : 2=2.08%, 4=4.30%, 10=8.98%, 20=7.94%, 50=34.11% lat (msec) : 100=29.04%, 250=5.99% cpu : usr=0.09%, sys=6.07%, ctx=1695, 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=718KiB/s (735kB/s), 177KiB/s-189KiB/s (181kB/s-194kB/s), io=23.4MiB (24.5MB), run=32362-33375msec WRITE: bw=755KiB/s (773kB/s), 183KiB/s-202KiB/s (187kB/s-207kB/s), io=24.6MiB (25.8MB), run=32362-33375msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179090: Sat Aug 22 00:15:59 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(5920KiB/45511msec) clat (msec): min=9, max=228, avg=47.52, stdev=37.28 lat (msec): min=9, max=228, avg=47.53, stdev=37.28 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 52], 80.00th=[ 69], 90.00th=[ 103], 95.00th=[ 121], | 99.00th=[ 186], 99.50th=[ 228], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 31, max= 375, per=25.42%, avg=132.72, stdev=78.51, samples=88 iops : min= 1, max= 23, avg= 7.56, stdev= 5.01, samples=88 write: IOPS=8, BW=140KiB/s (143kB/s)(6368KiB/45511msec); 0 zone resets clat (msec): min=15, max=343, avg=69.68, stdev=47.54 lat (msec): min=15, max=343, avg=69.69, stdev=47.55 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 55], 60.00th=[ 66], | 70.00th=[ 82], 80.00th=[ 96], 90.00th=[ 127], 95.00th=[ 161], | 99.00th=[ 234], 99.50th=[ 300], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 31, max= 345, per=25.40%, avg=139.44, stdev=74.37, samples=90 iops : min= 1, max= 21, avg= 7.97, stdev= 4.70, samples=90 lat (msec) : 10=0.26%, 20=9.64%, 50=45.96%, 100=29.56%, 250=14.19% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.89%, ctx=1235, 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=179091: Sat Aug 22 00:15:59 2026 read: IOPS=7, BW=126KiB/s (129kB/s)(5744KiB/45537msec) clat (msec): min=7, max=246, avg=46.98, stdev=36.57 lat (msec): min=7, max=246, avg=46.99, stdev=36.57 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 71], 90.00th=[ 97], 95.00th=[ 128], | 99.00th=[ 178], 99.50th=[ 213], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 28, max= 407, per=24.98%, avg=130.38, stdev=79.17, samples=87 iops : min= 1, max= 25, avg= 7.40, stdev= 4.99, samples=87 write: IOPS=8, BW=144KiB/s (147kB/s)(6544KiB/45537msec); 0 zone resets clat (msec): min=15, max=256, avg=69.38, stdev=44.16 lat (msec): min=15, max=256, avg=69.39, stdev=44.16 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 30], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 66], | 70.00th=[ 80], 80.00th=[ 100], 90.00th=[ 136], 95.00th=[ 161], | 99.00th=[ 224], 99.50th=[ 228], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 31, max= 318, per=26.04%, avg=142.93, stdev=75.32, samples=90 iops : min= 1, max= 19, avg= 8.19, stdev= 4.82, samples=90 lat (msec) : 10=0.52%, 20=9.24%, 50=45.44%, 100=29.82%, 250=14.84% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=1.86%, ctx=1221, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179092: Sat Aug 22 00:15:59 2026 read: IOPS=8, BW=137KiB/s (140kB/s)(6256KiB/45826msec) clat (msec): min=8, max=307, avg=48.80, stdev=41.31 lat (msec): min=8, max=307, avg=48.80, stdev=41.31 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 53], 80.00th=[ 66], 90.00th=[ 106], 95.00th=[ 136], | 99.00th=[ 205], 99.50th=[ 230], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 31, max= 471, per=26.97%, avg=140.78, stdev=94.26, samples=87 iops : min= 1, max= 29, avg= 8.06, stdev= 5.92, samples=87 write: IOPS=8, BW=132KiB/s (135kB/s)(6032KiB/45826msec); 0 zone resets clat (msec): min=16, max=341, avg=70.52, stdev=45.30 lat (msec): min=16, max=341, avg=70.52, stdev=45.30 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 34], | 30.00th=[ 42], 40.00th=[ 49], 50.00th=[ 58], 60.00th=[ 69], | 70.00th=[ 81], 80.00th=[ 102], 90.00th=[ 132], 95.00th=[ 167], | 99.00th=[ 211], 99.50th=[ 228], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 30, max= 320, per=23.53%, avg=129.19, stdev=68.41, samples=90 iops : min= 1, max= 20, avg= 7.32, stdev= 4.35, samples=90 lat (msec) : 10=1.04%, 20=9.11%, 50=45.31%, 100=29.30%, 250=14.97% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=1.89%, ctx=1238, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179093: Sat Aug 22 00:15:59 2026 read: IOPS=8, BW=133KiB/s (136kB/s)(6032KiB/45368msec) clat (msec): min=7, max=308, avg=47.69, stdev=39.19 lat (msec): min=7, max=308, avg=47.69, stdev=39.18 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 50], 80.00th=[ 65], 90.00th=[ 95], 95.00th=[ 134], | 99.00th=[ 190], 99.50th=[ 226], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 31, max= 381, per=26.06%, avg=136.01, stdev=77.94, samples=86 iops : min= 1, max= 23, avg= 7.74, stdev= 4.93, samples=86 write: IOPS=8, BW=138KiB/s (141kB/s)(6256KiB/45368msec); 0 zone resets clat (msec): min=15, max=298, avg=69.83, stdev=44.45 lat (msec): min=15, max=298, avg=69.84, stdev=44.45 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 30], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 66], | 70.00th=[ 84], 80.00th=[ 102], 90.00th=[ 131], 95.00th=[ 161], | 99.00th=[ 205], 99.50th=[ 239], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 349, per=24.94%, avg=136.91, stdev=76.07, samples=89 iops : min= 1, max= 21, avg= 7.81, stdev= 4.84, samples=89 lat (msec) : 10=0.78%, 20=9.24%, 50=47.27%, 100=27.99%, 250=14.45% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=1.90%, ctx=1262, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=523KiB/s (535kB/s), 126KiB/s-137KiB/s (129kB/s-140kB/s), io=23.4MiB (24.5MB), run=45368-45826msec WRITE: bw=550KiB/s (563kB/s), 132KiB/s-144KiB/s (135kB/s-147kB/s), io=24.6MiB (25.8MB), run=45368-45826msec 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=179110: Sat Aug 22 00:16:14 2026 read: IOPS=1, BW=2029KiB/s (2078kB/s)(7168KiB/3532msec) clat (usec): min=601, max=1530.3k, avg=303640.02, stdev=550108.16 lat (usec): min=602, max=1530.3k, avg=303641.43, stdev=550108.32 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 603], 10.00th=[ 603], | 20.00th=[ 1020], 30.00th=[ 7635], 40.00th=[ 7635], | 50.00th=[ 145753], 60.00th=[ 193987], 70.00th=[ 193987], | 80.00th=[ 244319], 90.00th=[1535116], 95.00th=[1535116], | 99.00th=[1535116], 99.50th=[1535116], 99.90th=[1535116], | 99.95th=[1535116], 99.99th=[1535116] bw ( KiB/s): min= 1605, max= 4087, per=52.78%, avg=2438.50, stdev=1117.20, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1450KiB/s (1484kB/s)(5120KiB/3532msec); 0 zone resets clat (msec): min=103, max=448, avg=227.43, stdev=142.44 lat (msec): min=103, max=448, avg=228.12, stdev=142.73 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 194], 60.00th=[ 194], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 2031, max= 2043, per=31.49%, avg=2037.00, stdev= 8.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 10=8.33%, 250=50.00%, 500=16.67%, 2000=8.33% cpu : usr=0.00%, sys=14.05%, ctx=333, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179111: Sat Aug 22 00:16:14 2026 read: IOPS=0, BW=462KiB/s (473kB/s)(2048KiB/4432msec) clat (msec): min=143, max=1639, avg=891.13, stdev=1057.95 lat (msec): min=143, max=1639, avg=891.13, stdev=1057.95 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 1636], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 2035, max= 2048, per=44.19%, avg=2041.50, stdev= 9.19, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2310KiB/s (2366kB/s)(10.0MiB/4432msec); 0 zone resets clat (msec): min=129, max=447, avg=252.11, stdev=111.72 lat (msec): min=129, max=447, avg=252.20, stdev=111.71 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 155], | 30.00th=[ 157], 40.00th=[ 184], 50.00th=[ 199], 60.00th=[ 253], | 70.00th=[ 253], 80.00th=[ 342], 90.00th=[ 409], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 2035, max= 6144, per=56.82%, avg=3675.40, stdev=1714.13, samples=5 iops : min= 1, max= 6, avg= 3.00, stdev= 1.87, samples=5 lat (msec) : 250=50.00%, 500=41.67%, 2000=8.33% cpu : usr=0.00%, sys=18.01%, ctx=240, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179113: Sat Aug 22 00:16:14 2026 read: IOPS=1, BW=2026KiB/s (2074kB/s)(6144KiB/3033msec) clat (usec): min=630, max=196754, avg=146018.36, stdev=73489.13 lat (usec): min=632, max=196755, avg=146019.71, stdev=73488.92 clat percentiles (usec): | 1.00th=[ 627], 5.00th=[ 627], 10.00th=[ 627], 20.00th=[154141], | 30.00th=[154141], 40.00th=[156238], 50.00th=[156238], 60.00th=[170918], | 70.00th=[196084], 80.00th=[196084], 90.00th=[196084], 95.00th=[196084], | 99.00th=[196084], 99.50th=[196084], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 2035, max= 6144, per=88.52%, avg=4089.50, stdev=2905.50, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=2026KiB/s (2074kB/s)(6144KiB/3033msec); 0 zone resets clat (msec): min=79, max=809, avg=350.19, stdev=283.78 lat (msec): min=79, max=809, avg=350.29, stdev=283.77 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 146], | 30.00th=[ 146], 40.00th=[ 232], 50.00th=[ 232], 60.00th=[ 253], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 2031, max= 3011, per=35.30%, avg=2283.25, stdev=485.22, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=58.33%, 500=8.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=16.56%, ctx=165, 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=179114: Sat Aug 22 00:16:14 2026 read: IOPS=1, BW=1586KiB/s (1624kB/s)(5120KiB/3229msec) clat (usec): min=320, max=457977, avg=92350.65, stdev=204393.56 lat (usec): min=321, max=457978, avg=92351.55, stdev=204393.37 clat percentiles (usec): | 1.00th=[ 322], 5.00th=[ 322], 10.00th=[ 322], 20.00th=[ 322], | 30.00th=[ 449], 40.00th=[ 449], 50.00th=[ 611], 60.00th=[ 611], | 70.00th=[ 2409], 80.00th=[ 2409], 90.00th=[459277], 95.00th=[459277], | 99.00th=[459277], 99.50th=[459277], 99.90th=[459277], 99.95th=[459277], | 99.99th=[459277] bw ( KiB/s): min= 2048, max= 6107, per=88.26%, avg=4077.50, stdev=2870.15, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=2, BW=2220KiB/s (2273kB/s)(7168KiB/3229msec); 0 zone resets clat (msec): min=124, max=910, avg=353.99, stdev=287.20 lat (msec): min=124, max=910, avg=354.22, stdev=287.28 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 126], 10.00th=[ 126], 20.00th=[ 138], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 205], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 498], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1570, max= 4063, per=36.34%, avg=2351.00, stdev=978.52, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 4=8.33%, 250=33.33%, 500=25.00%, 1000=8.33% cpu : usr=0.06%, sys=15.09%, ctx=124, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4621KiB/s (4732kB/s), 462KiB/s-2029KiB/s (473kB/s-2078kB/s), io=20.0MiB (20.0MB), run=3033-4432msec WRITE: bw=6469KiB/s (6625kB/s), 1450KiB/s-2310KiB/s (1484kB/s-2366kB/s), io=28.0MiB (29.4MB), run=3033-4432msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179116: Sat Aug 22 00:16:15 2026 read: IOPS=1, BW=1544KiB/s (1582kB/s)(7168KiB/4641msec) clat (msec): min=100, max=970, avg=382.59, stdev=340.16 lat (msec): min=100, max=970, avg=382.59, stdev=340.16 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 108], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 266], 60.00th=[ 414], | 70.00th=[ 414], 80.00th=[ 709], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1454, max= 2043, per=46.78%, avg=1913.20, stdev=257.17, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1103KiB/s (1130kB/s)(5120KiB/4641msec); 0 zone resets clat (msec): min=104, max=1109, avg=338.68, stdev=435.66 lat (msec): min=104, max=1109, avg=338.75, stdev=435.66 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 105], 10.00th=[ 105], 20.00th=[ 105], | 30.00th=[ 105], 40.00th=[ 105], 50.00th=[ 121], 60.00th=[ 121], | 70.00th=[ 255], 80.00th=[ 255], 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= 2007, max= 4039, per=52.79%, avg=3023.00, stdev=1436.84, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=5.15%, ctx=105, 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=179117: Sat Aug 22 00:16:15 2026 read: IOPS=0, BW=429KiB/s (439kB/s)(2048KiB/4774msec) clat (msec): min=267, max=1458, avg=862.76, stdev=842.26 lat (msec): min=267, max=1458, avg=862.76, stdev=842.26 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 1452], | 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= 2019, max= 2043, per=49.66%, avg=2031.00, stdev=16.97, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2145KiB/s (2196kB/s)(10.0MiB/4774msec); 0 zone resets clat (msec): min=101, max=674, avg=247.05, stdev=184.98 lat (msec): min=101, max=675, avg=247.22, stdev=185.21 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 120], | 30.00th=[ 124], 40.00th=[ 136], 50.00th=[ 157], 60.00th=[ 176], | 70.00th=[ 197], 80.00th=[ 372], 90.00th=[ 418], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1965, max= 4039, per=52.58%, avg=3010.50, stdev=1174.03, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 250=58.33%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=7.29%, ctx=169, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179118: Sat Aug 22 00:16:15 2026 read: IOPS=1, BW=1278KiB/s (1308kB/s)(6144KiB/4809msec) clat (msec): min=82, max=709, avg=255.03, stdev=239.97 lat (msec): min=82, max=709, avg=255.03, stdev=239.98 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 83], 10.00th=[ 83], 20.00th=[ 94], | 30.00th=[ 94], 40.00th=[ 99], 50.00th=[ 99], 60.00th=[ 266], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1965, max= 2043, per=49.18%, avg=2011.40, stdev=29.00, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1278KiB/s (1308kB/s)(6144KiB/4809msec); 0 zone resets clat (msec): min=93, max=1977, avg=536.43, stdev=714.56 lat (msec): min=93, max=1978, avg=536.73, stdev=714.80 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 157], | 30.00th=[ 157], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 313], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 1972], 95.00th=[ 1972], | 99.00th=[ 1972], 99.50th=[ 1972], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min= 1965, max= 4087, per=53.01%, avg=3035.50, stdev=1191.61, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=33.33%, 250=8.33%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=5.49%, ctx=100, 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=179119: Sat Aug 22 00:16:15 2026 read: IOPS=0, BW=1023KiB/s (1047kB/s)(5120KiB/5007msec) clat (msec): min=72, max=468, avg=235.96, stdev=155.97 lat (msec): min=72, max=468, avg=235.96, stdev=155.97 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 73], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 239], 60.00th=[ 239], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 4039, max= 4087, per=99.34%, 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=1432KiB/s (1466kB/s)(7168KiB/5007msec); 0 zone resets clat (msec): min=97, max=1780, avg=508.76, stdev=640.75 lat (msec): min=97, max=1780, avg=508.85, stdev=640.77 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 100], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 122], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 944], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 1965, max= 4087, per=44.11%, avg=2525.50, stdev=1041.49, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 500=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.23%, ctx=77, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4090KiB/s (4188kB/s), 429KiB/s-1544KiB/s (439kB/s-1582kB/s), io=20.0MiB (20.0MB), run=4641-5007msec WRITE: bw=5726KiB/s (5864kB/s), 1103KiB/s-2145KiB/s (1130kB/s-2196kB/s), io=28.0MiB (29.4MB), run=4641-5007msec 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=179125: Sat Aug 22 00:16:29 2026 read: IOPS=0, BW=3758KiB/s (3848kB/s)(12.0MiB/3270msec) clat (msec): min=997, max=1120, avg=1050.03, stdev=63.46 lat (msec): min=997, max=1120, avg=1050.03, stdev=63.46 clat percentiles (msec): | 1.00th=[ 995], 5.00th=[ 995], 10.00th=[ 995], 20.00th=[ 995], | 30.00th=[ 995], 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= 8078, max= 8175, per=100.00%, avg=8126.50, stdev=68.59, 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=3.12%, ctx=63, 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=179126: Sat Aug 22 00:16:29 2026 read: IOPS=0, BW=2917KiB/s (2987kB/s)(4096KiB/1404msec) clat (nsec): min=340313k, max=340313k, avg=340313319.00, stdev= 0.00 lat (nsec): min=340316k, max=340316k, avg=340315553.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 6041, max= 6041, per=100.00%, avg=6041.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5835KiB/s (5975kB/s)(8192KiB/1404msec); 0 zone resets clat (msec): min=447, max=564, avg=505.73, stdev=83.04 lat (msec): min=447, max=565, avg=506.18, stdev=83.27 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 8175, max= 8175, per=94.49%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=9.48%, ctx=31, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179127: Sat Aug 22 00:16:29 2026 write: IOPS=0, BW=3245KiB/s (3323kB/s)(12.0MiB/3787msec); 0 zone resets clat (msec): min=442, max=2631, avg=1214.31, stdev=1229.32 lat (msec): min=443, max=2632, avg=1216.80, stdev=1227.76 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 2635], 80.00th=[ 2635], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 8062, max= 8143, per=93.65%, avg=8102.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.05%, sys=3.54%, ctx=63, 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=179128: Sat Aug 22 00:16:29 2026 write: IOPS=0, BW=3708KiB/s (3797kB/s)(12.0MiB/3314msec); 0 zone resets clat (msec): min=376, max=2317, avg=1050.92, stdev=1097.90 lat (msec): min=377, max=2318, avg=1051.28, stdev=1097.89 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 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= 6005, max= 8175, per=81.95%, avg=7090.00, stdev=1534.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.17%, ctx=61, 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=5010KiB/s (5131kB/s), 2917KiB/s-3758KiB/s (2987kB/s-3848kB/s), io=16.0MiB (16.8MB), run=1404-3270msec WRITE: bw=8653KiB/s (8860kB/s), 3245KiB/s-5835KiB/s (3323kB/s-5975kB/s), io=32.0MiB (33.6MB), run=1404-3787msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179130: Sat Aug 22 00:16:30 2026 read: IOPS=1, BW=4268KiB/s (4371kB/s)(12.0MiB/2879msec) clat (msec): min=699, max=1149, avg=934.51, stdev=225.77 lat (msec): min=699, max=1149, avg=934.51, stdev=225.77 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 953], 50.00th=[ 953], 60.00th=[ 953], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7529, max= 7787, per=100.00%, avg=7658.00, stdev=182.43, 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=11.01%, ctx=275, 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=179131: Sat Aug 22 00:16:30 2026 read: IOPS=0, BW=1486KiB/s (1521kB/s)(4096KiB/2757msec) clat (nsec): min=583565k, max=583565k, avg=583565173.00, stdev= 0.00 lat (nsec): min=583568k, max=583568k, avg=583567826.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7529, max= 7529, per=100.00%, avg=7529.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2971KiB/s (3043kB/s)(8192KiB/2757msec); 0 zone resets clat (msec): min=745, max=1264, avg=1004.95, stdev=367.06 lat (msec): min=745, max=1264, avg=1005.34, stdev=367.17 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=[ 1267], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8175, max= 8175, per=91.76%, avg=8175.00, 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=0.04%, sys=6.82%, ctx=80, 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=179132: Sat Aug 22 00:16:30 2026 write: IOPS=0, BW=3341KiB/s (3421kB/s)(12.0MiB/3678msec); 0 zone resets clat (msec): min=204, max=3037, avg=1198.48, stdev=1594.10 lat (msec): min=204, max=3037, avg=1198.87, stdev=1594.07 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 3037], 80.00th=[ 3037], 90.00th=[ 3037], 95.00th=[ 3037], | 99.00th=[ 3037], 99.50th=[ 3037], 99.90th=[ 3037], 99.95th=[ 3037], | 99.99th=[ 3037] bw ( KiB/s): min=16286, max=16286, per=100.00%, avg=16286.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.81%, ctx=63, 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=179133: Sat Aug 22 00:16:30 2026 write: IOPS=0, BW=3591KiB/s (3677kB/s)(12.0MiB/3422msec); 0 zone resets clat (msec): min=1004, max=1248, avg=1111.66, stdev=124.61 lat (msec): min=1004, max=1248, avg=1113.05, stdev=124.27 clat percentiles (msec): | 1.00th=[ 1003], 5.00th=[ 1003], 10.00th=[ 1003], 20.00th=[ 1003], | 30.00th=[ 1003], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 8094, max= 8110, per=90.94%, avg=8102.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=3.68%, ctx=60, 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=5691KiB/s (5827kB/s), 1486KiB/s-4268KiB/s (1521kB/s-4371kB/s), io=16.0MiB (16.8MB), run=2757-2879msec WRITE: bw=8909KiB/s (9123kB/s), 2971KiB/s-3591KiB/s (3043kB/s-3677kB/s), io=32.0MiB (33.6MB), run=2757-3678msec