== sanity test 398b: DIO and buffer IO race ============== 09:36:46 (1787665006) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.06227 s, 9.9 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=174183: Tue Aug 25 09:39:03 2026 read: IOPS=12, BW=49.5KiB/s (50.7kB/s)(5992KiB/120982msec) clat (usec): min=30, max=278903, avg=38283.21, stdev=30396.88 lat (usec): min=30, max=278904, avg=38287.71, stdev=30403.26 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 1254], 20.00th=[ 17433], | 30.00th=[ 22152], 40.00th=[ 27132], 50.00th=[ 32113], 60.00th=[ 38011], | 70.00th=[ 45351], 80.00th=[ 57410], 90.00th=[ 73925], 95.00th=[ 89654], | 99.00th=[156238], 99.50th=[189793], 99.90th=[265290], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 128, per=24.89%, avg=49.28, stdev=21.59, samples=237 iops : min= 1, max= 32, avg=11.66, stdev= 5.43, samples=237 write: IOPS=13, BW=52.0KiB/s (53.3kB/s)(6296KiB/120982msec); 0 zone resets clat (usec): min=1129, max=590421, avg=40106.86, stdev=42449.30 lat (usec): min=1130, max=590423, avg=40110.80, stdev=42449.33 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1385], 10.00th=[ 2147], 20.00th=[ 4883], | 30.00th=[ 10028], 40.00th=[ 20579], 50.00th=[ 30016], 60.00th=[ 41157], | 70.00th=[ 51119], 80.00th=[ 67634], 90.00th=[ 93848], 95.00th=[117965], | 99.00th=[154141], 99.50th=[202376], 99.90th=[522191], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 7, max= 119, per=25.04%, avg=51.84, stdev=22.10, samples=237 iops : min= 1, max= 29, avg=12.30, stdev= 5.55, samples=237 lat (usec) : 50=0.85%, 100=3.32%, 250=0.49%, 500=0.07%, 750=0.10% lat (usec) : 1000=0.03% lat (msec) : 2=4.92%, 4=3.84%, 10=7.36%, 20=11.62%, 50=38.80% lat (msec) : 100=22.95%, 250=5.44%, 500=0.16%, 750=0.07% cpu : usr=0.07%, sys=5.22%, ctx=6654, 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=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=174184: Tue Aug 25 09:39:03 2026 read: IOPS=12, BW=50.4KiB/s (51.6kB/s)(5940KiB/117782msec) clat (usec): min=36, max=372939, avg=39006.14, stdev=30503.61 lat (usec): min=36, max=372940, avg=39007.50, stdev=30503.51 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 8291], 20.00th=[ 19006], | 30.00th=[ 23462], 40.00th=[ 28181], 50.00th=[ 32900], 60.00th=[ 39060], | 70.00th=[ 47449], 80.00th=[ 55837], 90.00th=[ 71828], 95.00th=[ 90702], | 99.00th=[152044], 99.50th=[170918], 99.90th=[320865], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 6, max= 118, per=25.43%, avg=50.35, stdev=20.42, samples=231 iops : min= 1, max= 29, avg=11.92, stdev= 5.14, samples=231 write: IOPS=13, BW=53.9KiB/s (55.2kB/s)(6348KiB/117782msec); 0 zone resets clat (usec): min=1124, max=625910, avg=37395.94, stdev=42391.69 lat (usec): min=1125, max=625911, avg=37401.87, stdev=42392.37 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1385], 10.00th=[ 1926], 20.00th=[ 4113], | 30.00th=[ 7963], 40.00th=[ 16909], 50.00th=[ 28181], 60.00th=[ 36439], | 70.00th=[ 46924], 80.00th=[ 62653], 90.00th=[ 87557], 95.00th=[107480], | 99.00th=[181404], 99.50th=[221250], 99.90th=[371196], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 7, max= 127, per=25.77%, avg=53.35, stdev=23.27, samples=233 iops : min= 1, max= 31, avg=12.67, stdev= 5.86, samples=233 lat (usec) : 50=0.59%, 100=3.52%, 250=0.29%, 500=0.07%, 750=0.07% lat (msec) : 2=5.47%, 4=4.82%, 10=7.68%, 20=9.93%, 50=40.14% lat (msec) : 100=22.82%, 250=4.30%, 500=0.29%, 750=0.03% cpu : usr=0.07%, sys=5.48%, ctx=6568, 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=174186: Tue Aug 25 09:39:03 2026 read: IOPS=12, BW=49.8KiB/s (50.0kB/s)(6028KiB/121105msec) clat (usec): min=30, max=329118, avg=37532.64, stdev=28708.99 lat (usec): min=31, max=329119, avg=37536.32, stdev=28708.10 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 56], 10.00th=[ 196], 20.00th=[ 17957], | 30.00th=[ 22676], 40.00th=[ 26870], 50.00th=[ 31327], 60.00th=[ 38536], | 70.00th=[ 45351], 80.00th=[ 55313], 90.00th=[ 70779], 95.00th=[ 88605], | 99.00th=[137364], 99.50th=[173016], 99.90th=[223347], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 7, max= 118, per=25.06%, avg=49.61, stdev=21.72, samples=237 iops : min= 1, max= 29, avg=11.74, stdev= 5.47, samples=237 write: IOPS=12, BW=51.7KiB/s (52.9kB/s)(6260KiB/121105msec); 0 zone resets clat (usec): min=1120, max=615493, avg=40900.52, stdev=45074.27 lat (usec): min=1120, max=615496, avg=40902.44, stdev=45074.13 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1336], 10.00th=[ 1975], 20.00th=[ 4883], | 30.00th=[ 8717], 40.00th=[ 20317], 50.00th=[ 31327], 60.00th=[ 41681], | 70.00th=[ 52691], 80.00th=[ 67634], 90.00th=[ 92799], 95.00th=[117965], | 99.00th=[175113], 99.50th=[210764], 99.90th=[534774], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 7, max= 119, per=24.86%, avg=51.46, stdev=21.70, samples=237 iops : min= 1, max= 29, avg=12.20, stdev= 5.46, samples=237 lat (usec) : 50=0.91%, 100=3.71%, 250=0.33%, 500=0.13%, 750=0.03% lat (msec) : 2=5.18%, 4=3.71%, 10=7.85%, 20=9.90%, 50=39.26% lat (msec) : 100=23.34%, 250=5.53%, 500=0.07%, 750=0.07% cpu : usr=0.06%, sys=5.20%, ctx=6611, 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=174189: Tue Aug 25 09:39:03 2026 read: IOPS=12, BW=50.7KiB/s (51.9kB/s)(6052KiB/119435msec) clat (usec): min=26, max=459619, avg=37943.22, stdev=30235.94 lat (usec): min=27, max=459620, avg=37945.96, stdev=30237.19 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 7242], 20.00th=[ 17695], | 30.00th=[ 22152], 40.00th=[ 27132], 50.00th=[ 31851], 60.00th=[ 38536], | 70.00th=[ 45876], 80.00th=[ 55313], 90.00th=[ 72877], 95.00th=[ 88605], | 99.00th=[137364], 99.50th=[166724], 99.90th=[238027], 99.95th=[459277], | 99.99th=[459277] bw ( KiB/s): min= 7, max= 120, per=25.68%, avg=50.85, stdev=21.52, samples=233 iops : min= 1, max= 30, avg=12.05, stdev= 5.42, samples=233 write: IOPS=13, BW=52.2KiB/s (53.5kB/s)(6236KiB/119435msec); 0 zone resets clat (usec): min=1002, max=636110, avg=39454.13, stdev=43027.53 lat (usec): min=1004, max=636111, avg=39473.12, stdev=43026.67 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1352], 10.00th=[ 1909], 20.00th=[ 4883], | 30.00th=[ 9765], 40.00th=[ 19792], 50.00th=[ 28705], 60.00th=[ 39584], | 70.00th=[ 50070], 80.00th=[ 64750], 90.00th=[ 89654], 95.00th=[113771], | 99.00th=[189793], 99.50th=[229639], 99.90th=[304088], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 7, max= 112, per=24.95%, avg=51.64, stdev=21.84, samples=236 iops : min= 1, max= 28, avg=12.25, stdev= 5.50, samples=236 lat (usec) : 50=1.20%, 100=3.19%, 250=0.36%, 500=0.03%, 750=0.07% lat (msec) : 2=5.27%, 4=3.45%, 10=7.36%, 20=11.52%, 50=40.04% lat (msec) : 100=22.20%, 250=5.11%, 500=0.16%, 750=0.03% cpu : usr=0.07%, sys=5.26%, ctx=6682, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=198KiB/s (203kB/s), 49.5KiB/s-50.7KiB/s (50.7kB/s-51.9kB/s), io=23.4MiB (24.6MB), run=117782-121105msec WRITE: bw=208KiB/s (213kB/s), 51.7KiB/s-53.9KiB/s (52.9kB/s-55.2kB/s), io=24.6MiB (25.7MB), run=117782-121105msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174182: Tue Aug 25 09:41:30 2026 read: IOPS=5, BW=22.5KiB/s (22.0kB/s)(5992KiB/266838msec) clat (msec): min=6, max=746, avg=35.93, stdev=37.04 lat (msec): min=6, max=746, avg=35.93, stdev=37.04 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 49], 90.00th=[ 71], 95.00th=[ 101], | 99.00th=[ 165], 99.50th=[ 194], 99.90th=[ 393], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 96, per=27.93%, avg=24.86, stdev=16.50, samples=466 iops : min= 1, max= 24, avg= 5.58, stdev= 4.18, samples=466 write: IOPS=5, BW=23.6KiB/s (24.2kB/s)(6296KiB/266838msec); 0 zone resets clat (msec): min=34, max=713, avg=135.04, stdev=64.07 lat (msec): min=34, max=713, avg=135.05, stdev=64.07 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 72], 20.00th=[ 86], | 30.00th=[ 97], 40.00th=[ 109], 50.00th=[ 123], 60.00th=[ 136], | 70.00th=[ 150], 80.00th=[ 178], 90.00th=[ 215], 95.00th=[ 249], | 99.00th=[ 359], 99.50th=[ 397], 99.90th=[ 617], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 55, per=24.95%, avg=23.21, stdev=10.39, samples=523 iops : min= 1, max= 13, avg= 5.17, stdev= 2.66, samples=523 lat (msec) : 10=3.45%, 20=14.55%, 50=21.74%, 100=23.44%, 250=34.21% lat (msec) : 500=2.47%, 750=0.13% cpu : usr=0.04%, sys=1.41%, ctx=5581, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=174185: Tue Aug 25 09:41:30 2026 read: IOPS=5, BW=22.2KiB/s (22.7kB/s)(5940KiB/267953msec) clat (msec): min=4, max=662, avg=35.16, stdev=39.19 lat (msec): min=4, max=662, avg=35.16, stdev=39.19 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 47], 90.00th=[ 71], 95.00th=[ 96], | 99.00th=[ 184], 99.50th=[ 271], 99.90th=[ 430], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7, max= 88, per=27.86%, avg=24.80, stdev=16.21, samples=463 iops : min= 1, max= 22, avg= 5.57, stdev= 4.12, samples=463 write: IOPS=5, BW=23.7KiB/s (24.3kB/s)(6348KiB/267953msec); 0 zone resets clat (msec): min=35, max=597, avg=135.67, stdev=65.15 lat (msec): min=35, max=597, avg=135.67, stdev=65.15 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 63], 10.00th=[ 71], 20.00th=[ 86], | 30.00th=[ 96], 40.00th=[ 109], 50.00th=[ 122], 60.00th=[ 138], | 70.00th=[ 155], 80.00th=[ 178], 90.00th=[ 220], 95.00th=[ 257], | 99.00th=[ 351], 99.50th=[ 405], 99.90th=[ 575], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 7, max= 62, per=24.95%, avg=23.20, stdev=10.49, samples=527 iops : min= 1, max= 15, avg= 5.17, stdev= 2.68, samples=527 lat (msec) : 10=3.68%, 20=15.46%, 50=21.16%, 100=23.18%, 250=33.33% lat (msec) : 500=3.03%, 750=0.16% cpu : usr=0.04%, sys=1.33%, ctx=5422, 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=174187: Tue Aug 25 09:41:30 2026 read: IOPS=5, BW=22.6KiB/s (23.2kB/s)(6028KiB/266592msec) clat (msec): min=5, max=357, avg=36.79, stdev=34.84 lat (msec): min=5, max=357, avg=36.79, stdev=34.84 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 52], 90.00th=[ 78], 95.00th=[ 101], | 99.00th=[ 176], 99.50th=[ 209], 99.90th=[ 338], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 103, per=28.20%, avg=25.10, stdev=16.07, samples=464 iops : min= 1, max= 25, avg= 5.65, stdev= 4.03, samples=464 write: IOPS=5, BW=23.5KiB/s (24.0kB/s)(6260KiB/266592msec); 0 zone resets clat (msec): min=32, max=778, avg=134.61, stdev=64.74 lat (msec): min=32, max=778, avg=134.61, stdev=64.74 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 64], 10.00th=[ 71], 20.00th=[ 85], | 30.00th=[ 96], 40.00th=[ 109], 50.00th=[ 122], 60.00th=[ 134], | 70.00th=[ 150], 80.00th=[ 176], 90.00th=[ 215], 95.00th=[ 259], | 99.00th=[ 330], 99.50th=[ 372], 99.90th=[ 609], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 55, per=24.81%, avg=23.07, stdev=10.44, samples=522 iops : min= 1, max= 13, avg= 5.13, stdev= 2.68, samples=522 lat (msec) : 10=3.48%, 20=14.91%, 50=21.22%, 100=23.67%, 250=33.50% lat (msec) : 500=3.12%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.36%, ctx=5507, 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=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=174188: Tue Aug 25 09:41:30 2026 read: IOPS=5, BW=22.8KiB/s (23.3kB/s)(6052KiB/265812msec) clat (msec): min=5, max=447, avg=35.56, stdev=36.78 lat (msec): min=5, max=447, avg=35.56, stdev=36.78 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 48], 90.00th=[ 73], 95.00th=[ 100], | 99.00th=[ 184], 99.50th=[ 228], 99.90th=[ 401], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 103, per=28.55%, avg=25.41, stdev=17.75, samples=461 iops : min= 1, max= 25, avg= 5.72, stdev= 4.49, samples=461 write: IOPS=5, BW=23.5KiB/s (24.0kB/s)(6236KiB/265812msec); 0 zone resets clat (msec): min=35, max=695, avg=135.69, stdev=64.43 lat (msec): min=35, max=695, avg=135.70, stdev=64.44 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 73], 20.00th=[ 87], | 30.00th=[ 99], 40.00th=[ 110], 50.00th=[ 120], 60.00th=[ 133], | 70.00th=[ 153], 80.00th=[ 180], 90.00th=[ 222], 95.00th=[ 259], | 99.00th=[ 355], 99.50th=[ 405], 99.90th=[ 518], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 55, per=24.85%, avg=23.11, stdev=10.00, samples=520 iops : min= 1, max= 13, avg= 5.14, stdev= 2.56, samples=520 lat (msec) : 10=3.39%, 20=16.24%, 50=20.87%, 100=22.27%, 250=34.15% lat (msec) : 500=2.99%, 750=0.10% cpu : usr=0.04%, sys=1.35%, ctx=5418, 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=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=89.6KiB/s (91.8kB/s), 22.2KiB/s-22.8KiB/s (22.7kB/s-23.3kB/s), io=23.4MiB (24.6MB), run=265812-267953msec WRITE: bw=93.8KiB/s (96.1kB/s), 23.5KiB/s-23.7KiB/s (24.0kB/s-24.3kB/s), io=24.6MiB (25.7MB), run=265812-267953msec 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=174248: Tue Aug 25 09:42:02 2026 read: IOPS=16, BW=259KiB/s (265kB/s)(5920KiB/22864msec) clat (usec): min=41, max=158800, avg=31433.61, stdev=27865.85 lat (usec): min=41, max=158801, avg=31434.85, stdev=27865.93 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 119], | 30.00th=[ 17433], 40.00th=[ 23462], 50.00th=[ 28443], 60.00th=[ 33817], | 70.00th=[ 39584], 80.00th=[ 46924], 90.00th=[ 62129], 95.00th=[ 86508], | 99.00th=[116917], 99.50th=[145753], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 117, max= 414, per=24.89%, avg=259.13, stdev=80.59, samples=45 iops : min= 7, max= 25, avg=15.51, stdev= 4.94, samples=45 write: IOPS=17, BW=279KiB/s (285kB/s)(6368KiB/22864msec); 0 zone resets clat (usec): min=1597, max=139345, avg=27636.93, stdev=27262.33 lat (usec): min=1599, max=139347, avg=27641.60, stdev=27266.80 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2180], 10.00th=[ 3097], 20.00th=[ 5145], | 30.00th=[ 7177], 40.00th=[ 11207], 50.00th=[ 17171], 60.00th=[ 26084], | 70.00th=[ 37487], 80.00th=[ 51119], 90.00th=[ 68682], 95.00th=[ 79168], | 99.00th=[115868], 99.50th=[129500], 99.90th=[139461], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 29, max= 509, per=25.55%, avg=280.04, stdev=111.22, samples=45 iops : min= 1, max= 31, avg=16.80, stdev= 6.99, samples=45 lat (usec) : 50=1.04%, 100=7.81%, 250=1.56%, 500=0.65%, 1000=0.13% lat (msec) : 2=2.34%, 4=6.38%, 10=11.98%, 20=12.11%, 50=36.98% lat (msec) : 100=15.89%, 250=3.12% cpu : usr=0.07%, sys=7.47%, ctx=1583, 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=174250: Tue Aug 25 09:42:02 2026 read: IOPS=15, BW=250KiB/s (256kB/s)(5744KiB/22992msec) clat (usec): min=39, max=190898, avg=32166.20, stdev=25878.95 lat (usec): min=39, max=190899, avg=32167.32, stdev=25878.99 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 57], 10.00th=[ 64], 20.00th=[ 6718], | 30.00th=[ 19792], 40.00th=[ 25035], 50.00th=[ 30278], 60.00th=[ 35914], | 70.00th=[ 41681], 80.00th=[ 50594], 90.00th=[ 61604], 95.00th=[ 70779], | 99.00th=[158335], 99.50th=[160433], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 63, max= 383, per=24.03%, avg=250.13, stdev=84.28, samples=45 iops : min= 3, max= 23, avg=14.93, stdev= 5.28, samples=45 write: IOPS=17, BW=285KiB/s (291kB/s)(6544KiB/22992msec); 0 zone resets clat (usec): min=1699, max=131606, avg=27709.97, stdev=27061.76 lat (usec): min=1701, max=131608, avg=27733.57, stdev=27052.80 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 2507], 10.00th=[ 3228], 20.00th=[ 4621], | 30.00th=[ 7242], 40.00th=[ 11731], 50.00th=[ 19530], 60.00th=[ 26608], | 70.00th=[ 35914], 80.00th=[ 49021], 90.00th=[ 63701], 95.00th=[ 79168], | 99.00th=[123208], 99.50th=[128451], 99.90th=[131597], 99.95th=[131597], | 99.99th=[131597] bw ( KiB/s): min= 63, max= 541, per=26.12%, avg=286.31, stdev=110.37, samples=45 iops : min= 3, max= 33, avg=17.20, stdev= 6.90, samples=45 lat (usec) : 50=0.65%, 100=6.77%, 250=0.52%, 500=0.65%, 750=0.26% lat (msec) : 2=1.43%, 4=7.03%, 10=11.98%, 20=11.72%, 50=39.45% lat (msec) : 100=17.45%, 250=2.08% cpu : usr=0.10%, sys=7.43%, ctx=1623, 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=174251: Tue Aug 25 09:42:02 2026 read: IOPS=18, BW=292KiB/s (299kB/s)(6256KiB/21416msec) clat (usec): min=37, max=161545, avg=27706.70, stdev=23451.60 lat (usec): min=37, max=161546, avg=27713.78, stdev=23459.46 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 52], 10.00th=[ 58], 20.00th=[ 75], | 30.00th=[ 16450], 40.00th=[ 21365], 50.00th=[ 26084], 60.00th=[ 31327], | 70.00th=[ 37487], 80.00th=[ 43779], 90.00th=[ 56886], 95.00th=[ 69731], | 99.00th=[100140], 99.50th=[112722], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 156, max= 637, per=29.08%, avg=302.68, stdev=94.54, samples=41 iops : min= 9, max= 39, avg=18.22, stdev= 5.87, samples=41 write: IOPS=17, BW=282KiB/s (288kB/s)(6032KiB/21416msec); 0 zone resets clat (usec): min=1498, max=180890, avg=27223.84, stdev=29873.76 lat (usec): min=1499, max=180892, avg=27227.29, stdev=29873.71 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2024], 10.00th=[ 3064], 20.00th=[ 4883], | 30.00th=[ 6194], 40.00th=[ 9503], 50.00th=[ 17171], 60.00th=[ 24511], | 70.00th=[ 32113], 80.00th=[ 45876], 90.00th=[ 69731], 95.00th=[ 86508], | 99.00th=[141558], 99.50th=[160433], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 30, max= 573, per=25.70%, avg=281.64, stdev=115.92, samples=42 iops : min= 1, max= 35, avg=16.90, stdev= 7.25, samples=42 lat (usec) : 50=2.08%, 100=9.11%, 250=1.43%, 500=0.26% lat (msec) : 2=2.47%, 4=5.34%, 10=12.89%, 20=11.20%, 50=39.19% lat (msec) : 100=13.93%, 250=2.08% cpu : usr=0.11%, sys=7.71%, ctx=1497, 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=174252: Tue Aug 25 09:42:02 2026 read: IOPS=16, BW=267KiB/s (273kB/s)(6032KiB/22586msec) clat (usec): min=34, max=161816, avg=30795.97, stdev=25585.00 lat (usec): min=34, max=161817, avg=30797.09, stdev=25584.93 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 55], 10.00th=[ 59], 20.00th=[ 100], | 30.00th=[ 17695], 40.00th=[ 23725], 50.00th=[ 29230], 60.00th=[ 35390], | 70.00th=[ 41157], 80.00th=[ 49546], 90.00th=[ 62129], 95.00th=[ 78119], | 99.00th=[113771], 99.50th=[126354], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 126, max= 472, per=26.17%, avg=272.42, stdev=89.50, samples=43 iops : min= 7, max= 29, avg=16.33, stdev= 5.66, samples=43 write: IOPS=17, BW=277KiB/s (284kB/s)(6256KiB/22586msec); 0 zone resets clat (usec): min=1461, max=164148, avg=27478.24, stdev=29310.53 lat (usec): min=1462, max=164149, avg=27483.89, stdev=29316.11 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2008], 10.00th=[ 2704], 20.00th=[ 4817], | 30.00th=[ 7373], 40.00th=[ 9896], 50.00th=[ 17171], 60.00th=[ 26346], | 70.00th=[ 33162], 80.00th=[ 47449], 90.00th=[ 64750], 95.00th=[ 80217], | 99.00th=[135267], 99.50th=[147850], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 63, max= 597, per=25.26%, avg=276.82, stdev=109.72, samples=44 iops : min= 3, max= 37, avg=16.61, stdev= 6.93, samples=44 lat (usec) : 50=0.65%, 100=9.38%, 250=1.30%, 500=0.52%, 1000=0.13% lat (msec) : 2=2.73%, 4=6.38%, 10=11.72%, 20=10.81%, 50=36.98% lat (msec) : 100=16.80%, 250=2.60% cpu : usr=0.10%, sys=7.47%, ctx=1561, 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=1042KiB/s (1067kB/s), 250KiB/s-292KiB/s (256kB/s-299kB/s), io=23.4MiB (24.5MB), run=21416-22992msec WRITE: bw=1096KiB/s (1122kB/s), 277KiB/s-285KiB/s (284kB/s-291kB/s), io=24.6MiB (25.8MB), run=21416-22992msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174245: Tue Aug 25 09:42:45 2026 read: IOPS=5, BW=90.7KiB/s (92.9kB/s)(5920KiB/65251msec) clat (msec): min=7, max=195, avg=33.44, stdev=29.88 lat (msec): min=7, max=195, avg=33.44, stdev=29.88 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 44], 90.00th=[ 60], 95.00th=[ 95], | 99.00th=[ 184], 99.50th=[ 186], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 30, max= 379, per=26.97%, avg=97.92, stdev=59.04, samples=118 iops : min= 1, max= 23, avg= 5.43, stdev= 3.73, samples=118 write: IOPS=6, BW=97.6KiB/s (99.9kB/s)(6368KiB/65251msec); 0 zone resets clat (msec): min=37, max=418, avg=132.01, stdev=50.59 lat (msec): min=37, max=418, avg=132.02, stdev=50.60 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 66], 10.00th=[ 74], 20.00th=[ 90], | 30.00th=[ 104], 40.00th=[ 113], 50.00th=[ 125], 60.00th=[ 138], | 70.00th=[ 150], 80.00th=[ 167], 90.00th=[ 207], 95.00th=[ 226], | 99.00th=[ 288], 99.50th=[ 296], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 31, max= 192, per=25.52%, avg=97.47, stdev=32.14, samples=128 iops : min= 1, max= 12, avg= 5.41, stdev= 2.07, samples=128 lat (msec) : 10=2.47%, 20=15.76%, 50=23.18%, 100=18.88%, 250=38.80% lat (msec) : 500=0.91% cpu : usr=0.03%, sys=1.65%, ctx=1403, 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=174246: Tue Aug 25 09:42:45 2026 read: IOPS=5, BW=87.2KiB/s (89.2kB/s)(5744KiB/65905msec) clat (msec): min=7, max=243, avg=33.03, stdev=27.55 lat (msec): min=7, max=243, avg=33.03, stdev=27.55 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 63], 95.00th=[ 85], | 99.00th=[ 138], 99.50th=[ 184], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 30, max= 256, per=26.48%, avg=96.14, stdev=55.72, samples=117 iops : min= 1, max= 16, avg= 5.32, stdev= 3.50, samples=117 write: IOPS=6, BW=99.3KiB/s (102kB/s)(6544KiB/65905msec); 0 zone resets clat (msec): min=38, max=416, avg=131.44, stdev=49.46 lat (msec): min=38, max=416, avg=131.45, stdev=49.46 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 66], 10.00th=[ 77], 20.00th=[ 90], | 30.00th=[ 101], 40.00th=[ 112], 50.00th=[ 124], 60.00th=[ 138], | 70.00th=[ 153], 80.00th=[ 169], 90.00th=[ 197], 95.00th=[ 224], | 99.00th=[ 264], 99.50th=[ 279], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 30, max= 192, per=25.97%, avg=99.22, stdev=34.18, samples=129 iops : min= 1, max= 12, avg= 5.51, stdev= 2.17, samples=129 lat (msec) : 10=1.04%, 20=16.02%, 50=22.53%, 100=20.96%, 250=38.15% lat (msec) : 500=1.30% cpu : usr=0.03%, sys=1.55%, ctx=1411, 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=174247: Tue Aug 25 09:42:45 2026 read: IOPS=6, BW=97.8KiB/s (100kB/s)(6256KiB/63935msec) clat (msec): min=7, max=278, avg=34.58, stdev=32.19 lat (msec): min=7, max=278, avg=34.58, stdev=32.19 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 68], 95.00th=[ 96], | 99.00th=[ 176], 99.50th=[ 241], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 350, per=28.86%, avg=104.75, stdev=69.86, samples=118 iops : min= 1, max= 21, avg= 5.86, stdev= 4.40, samples=118 write: IOPS=5, BW=94.3KiB/s (96.6kB/s)(6032KiB/63935msec); 0 zone resets clat (msec): min=56, max=303, avg=132.97, stdev=48.32 lat (msec): min=56, max=303, avg=132.97, stdev=48.32 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 70], 10.00th=[ 79], 20.00th=[ 92], | 30.00th=[ 104], 40.00th=[ 113], 50.00th=[ 126], 60.00th=[ 136], | 70.00th=[ 153], 80.00th=[ 171], 90.00th=[ 199], 95.00th=[ 226], | 99.00th=[ 288], 99.50th=[ 300], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 30, max= 192, per=24.47%, avg=93.49, stdev=30.69, samples=126 iops : min= 1, max= 12, avg= 5.15, stdev= 1.95, samples=126 lat (msec) : 10=2.47%, 20=15.10%, 50=25.26%, 100=18.75%, 250=36.98% lat (msec) : 500=1.43% cpu : usr=0.03%, sys=1.71%, ctx=1494, 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=174249: Tue Aug 25 09:42:45 2026 read: IOPS=5, BW=93.6KiB/s (95.8kB/s)(6032KiB/64455msec) clat (msec): min=7, max=272, avg=33.47, stdev=28.02 lat (msec): min=7, max=272, avg=33.47, stdev=28.02 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 43], 90.00th=[ 64], 95.00th=[ 87], | 99.00th=[ 148], 99.50th=[ 203], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 30, max= 349, per=28.79%, avg=104.49, stdev=64.04, samples=114 iops : min= 1, max= 21, avg= 5.85, stdev= 4.08, samples=114 write: IOPS=6, BW=97.1KiB/s (99.4kB/s)(6256KiB/64455msec); 0 zone resets clat (msec): min=48, max=338, avg=132.39, stdev=44.88 lat (msec): min=48, max=338, avg=132.40, stdev=44.88 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 73], 10.00th=[ 86], 20.00th=[ 94], | 30.00th=[ 105], 40.00th=[ 115], 50.00th=[ 126], 60.00th=[ 138], | 70.00th=[ 153], 80.00th=[ 163], 90.00th=[ 192], 95.00th=[ 218], | 99.00th=[ 279], 99.50th=[ 296], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 31, max= 160, per=25.51%, avg=97.46, stdev=30.68, samples=127 iops : min= 1, max= 10, avg= 5.39, stdev= 1.92, samples=127 lat (msec) : 10=1.04%, 20=14.97%, 50=26.04%, 100=18.75%, 250=37.89% lat (msec) : 500=1.30% cpu : usr=0.04%, sys=1.64%, ctx=1404, 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=363KiB/s (372kB/s), 87.2KiB/s-97.8KiB/s (89.2kB/s-100kB/s), io=23.4MiB (24.5MB), run=63935-65905msec WRITE: bw=382KiB/s (392kB/s), 94.3KiB/s-99.3KiB/s (96.6kB/s-102kB/s), io=24.6MiB (25.8MB), run=63935-65905msec 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=174269: Tue Aug 25 09:43:02 2026 read: IOPS=0, BW=813KiB/s (833kB/s)(7168KiB/8816msec) clat (msec): min=164, max=2771, avg=583.37, stdev=965.89 lat (msec): min=164, max=2771, avg=583.37, stdev=965.89 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 194], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 207], 60.00th=[ 228], | 70.00th=[ 228], 80.00th=[ 317], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 2027, max= 4071, per=100.00%, avg=2952.67, stdev=1035.53, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=0, BW=581KiB/s (595kB/s)(5120KiB/8816msec); 0 zone resets clat (msec): min=142, max=1731, avg=889.72, stdev=761.93 lat (msec): min=142, max=1731, avg=889.82, stdev=761.95 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 355], 40.00th=[ 355], 50.00th=[ 531], 60.00th=[ 531], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 2027, max= 4096, per=83.70%, avg=2722.00, stdev=1189.95, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 250=50.00%, 500=16.67%, 750=8.33%, 2000=16.67%, >=2000=8.33% cpu : usr=0.01%, sys=5.57%, ctx=216, 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=174270: Tue Aug 25 09:43:02 2026 read: IOPS=0, BW=246KiB/s (252kB/s)(2048KiB/8320msec) clat (msec): min=295, max=1846, avg=1070.60, stdev=1096.60 lat (msec): min=295, max=1846, avg=1070.60, stdev=1096.60 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 1854], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 2039, max= 2043, per=87.86%, avg=2041.00, stdev= 2.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1231KiB/s (1260kB/s)(10.0MiB/8320msec); 0 zone resets clat (msec): min=161, max=3061, avg=611.57, stdev=880.53 lat (msec): min=161, max=3062, avg=611.72, stdev=880.69 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 184], | 30.00th=[ 209], 40.00th=[ 211], 50.00th=[ 251], 60.00th=[ 300], | 70.00th=[ 426], 80.00th=[ 642], 90.00th=[ 667], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min= 1771, max= 4087, per=79.40%, avg=2582.00, stdev=1021.97, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (msec) : 250=33.33%, 500=33.33%, 750=16.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.54%, ctx=310, 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=174271: Tue Aug 25 09:43:02 2026 read: IOPS=0, BW=923KiB/s (945kB/s)(6144KiB/6655msec) clat (msec): min=94, max=2835, avg=695.59, stdev=1069.24 lat (msec): min=94, max=2835, avg=695.59, stdev=1069.24 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 99], | 30.00th=[ 99], 40.00th=[ 123], 50.00th=[ 123], 60.00th=[ 405], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 2039, max= 4055, per=100.00%, avg=2545.25, stdev=1006.51, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=923KiB/s (945kB/s)(6144KiB/6655msec); 0 zone resets clat (msec): min=103, max=1039, avg=366.44, stdev=348.65 lat (msec): min=103, max=1039, avg=366.51, stdev=348.64 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 115], | 30.00th=[ 115], 40.00th=[ 218], 50.00th=[ 218], 60.00th=[ 355], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1771, max= 2741, per=65.38%, avg=2126.00, stdev=362.98, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=9.84%, ctx=751, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174272: Tue Aug 25 09:43:02 2026 read: IOPS=0, BW=724KiB/s (741kB/s)(5120KiB/7072msec) clat (usec): min=517, max=246461, avg=162374.73, stdev=96889.03 lat (usec): min=519, max=246462, avg=162375.80, stdev=96888.90 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 519], 10.00th=[ 519], 20.00th=[ 519], | 30.00th=[166724], 40.00th=[166724], 50.00th=[170918], 60.00th=[170918], | 70.00th=[227541], 80.00th=[227541], 90.00th=[246416], 95.00th=[246416], | 99.00th=[246416], 99.50th=[246416], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 2035, max= 5314, per=100.00%, avg=3674.50, stdev=2318.60, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=0, BW=1014KiB/s (1038kB/s)(7168KiB/7072msec); 0 zone resets clat (msec): min=200, max=2966, avg=883.79, stdev=1057.70 lat (msec): min=200, max=2966, avg=884.61, stdev=1057.46 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 239], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 275], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 1670], 90.00th=[ 2970], 95.00th=[ 2970], | 99.00th=[ 2970], 99.50th=[ 2970], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] bw ( KiB/s): min= 1381, max= 4087, per=68.39%, avg=2224.00, stdev=948.04, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=16.67%, 750=8.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.95%, ctx=288, 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=2323KiB/s (2379kB/s), 246KiB/s-923KiB/s (252kB/s-945kB/s), io=20.0MiB (20.0MB), run=6655-8816msec WRITE: bw=3252KiB/s (3330kB/s), 581KiB/s-1231KiB/s (595kB/s-1260kB/s), io=28.0MiB (29.4MB), run=6655-8816msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174273: Tue Aug 25 09:43:02 2026 read: IOPS=0, BW=869KiB/s (890kB/s)(7168KiB/8244msec) clat (msec): min=103, max=3012, avg=555.44, stdev=1083.79 lat (msec): min=103, max=3012, avg=555.44, stdev=1083.79 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 117], | 30.00th=[ 121], 40.00th=[ 121], 50.00th=[ 169], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 194], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 2043, max= 5807, per=100.00%, avg=3942.00, stdev=1882.23, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=0, BW=621KiB/s (636kB/s)(5120KiB/8244msec); 0 zone resets clat (msec): min=237, max=1801, avg=854.41, stdev=705.82 lat (msec): min=240, max=1801, avg=855.08, stdev=705.38 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 1976, max= 4087, per=79.77%, avg=2521.50, stdev=1043.88, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=58.33%, 500=8.33%, 750=8.33%, 2000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=2.15%, ctx=71, 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=174274: Tue Aug 25 09:43:02 2026 read: IOPS=0, BW=226KiB/s (231kB/s)(2048KiB/9069msec) clat (msec): min=148, max=1574, avg=861.41, stdev=1008.27 lat (msec): min=148, max=1574, avg=861.41, stdev=1008.27 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 1569], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 1976, max= 1988, per=87.78%, avg=1982.00, stdev= 8.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1129KiB/s (1156kB/s)(10.0MiB/9069msec); 0 zone resets clat (msec): min=269, max=3324, avg=686.43, stdev=932.31 lat (msec): min=269, max=3324, avg=686.51, stdev=932.31 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 309], | 30.00th=[ 334], 40.00th=[ 347], 50.00th=[ 351], 60.00th=[ 355], | 70.00th=[ 472], 80.00th=[ 542], 90.00th=[ 575], 95.00th=[ 3339], | 99.00th=[ 3339], 99.50th=[ 3339], 99.90th=[ 3339], 99.95th=[ 3339], | 99.99th=[ 3339] bw ( KiB/s): min= 1988, max= 4079, per=82.45%, avg=2606.14, stdev=1000.96, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=8.33%, 500=58.33%, 750=16.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.03%, sys=3.20%, ctx=213, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174275: Tue Aug 25 09:43:02 2026 read: IOPS=0, BW=826KiB/s (846kB/s)(6144KiB/7441msec) clat (msec): min=50, max=1530, avg=361.49, stdev=580.38 lat (msec): min=50, max=1530, avg=361.49, stdev=580.38 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 63], | 30.00th=[ 63], 40.00th=[ 70], 50.00th=[ 70], 60.00th=[ 157], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 1992, max= 4096, per=100.00%, avg=3370.33, stdev=1194.23, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=0, BW=826KiB/s (846kB/s)(6144KiB/7441msec); 0 zone resets clat (msec): min=146, max=2396, avg=843.01, stdev=932.21 lat (msec): min=146, max=2396, avg=843.09, stdev=932.21 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 493], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 2400], 95.00th=[ 2400], | 99.00th=[ 2400], 99.50th=[ 2400], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 1368, max= 4023, per=72.22%, avg=2282.80, stdev=1011.70, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=25.00%, 250=25.00%, 500=25.00%, 2000=16.67%, >=2000=8.33% cpu : usr=0.03%, sys=2.04%, ctx=76, 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=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=174276: Tue Aug 25 09:43:02 2026 read: IOPS=0, BW=643KiB/s (658kB/s)(5120KiB/7963msec) clat (msec): min=94, max=336, avg=166.67, stdev=101.50 lat (msec): min=94, max=336, avg=166.67, stdev=101.50 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 95], | 30.00th=[ 106], 40.00th=[ 106], 50.00th=[ 112], 60.00th=[ 112], | 70.00th=[ 186], 80.00th=[ 186], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 4079, max= 4087, per=100.00%, avg=4083.00, stdev= 5.66, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=0, BW=900KiB/s (922kB/s)(7168KiB/7963msec); 0 zone resets clat (msec): min=314, max=3030, avg=969.17, stdev=1065.88 lat (msec): min=314, max=3030, avg=969.26, stdev=1065.90 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 330], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 435], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 1871], 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= 1416, max= 2048, per=60.83%, avg=1922.83, stdev=249.26, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.80%, ctx=106, 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=2258KiB/s (2312kB/s), 226KiB/s-869KiB/s (231kB/s-890kB/s), io=20.0MiB (20.0MB), run=7441-9069msec WRITE: bw=3162KiB/s (3237kB/s), 621KiB/s-1129KiB/s (636kB/s-1156kB/s), io=28.0MiB (29.4MB), run=7441-9069msec 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=174284: Tue Aug 25 09:43:15 2026 read: IOPS=1, BW=5009KiB/s (5130kB/s)(12.0MiB/2453msec) clat (msec): min=559, max=922, avg=791.39, stdev=201.07 lat (msec): min=559, max=922, avg=791.39, stdev=201.07 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 894], | 70.00th=[ 919], 80.00th=[ 919], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7816, max= 8175, per=100.00%, avg=7995.50, stdev=253.85, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.20%, sys=15.54%, ctx=343, 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=174285: Tue Aug 25 09:43:15 2026 read: IOPS=0, BW=1527KiB/s (1563kB/s)(4096KiB/2683msec) clat (nsec): min=569530k, max=569530k, avg=569529793.00, stdev= 0.00 lat (nsec): min=569532k, max=569532k, avg=569532181.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 567], 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= 5512, max= 5512, per=90.27%, avg=5512.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3053KiB/s (3127kB/s)(8192KiB/2683msec); 0 zone resets clat (msec): min=687, max=1376, avg=1031.99, stdev=486.82 lat (msec): min=687, max=1376, avg=1032.26, stdev=486.97 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 8192, max= 8192, per=87.68%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.03%, ctx=128, 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=174286: Tue Aug 25 09:43:15 2026 write: IOPS=0, BW=3504KiB/s (3588kB/s)(12.0MiB/3507msec); 0 zone resets clat (msec): min=223, max=1622, avg=1145.43, stdev=798.56 lat (msec): min=223, max=1629, avg=1147.82, stdev=800.58 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 1586], 50.00th=[ 1586], 60.00th=[ 1586], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7816, max= 7816, per=83.66%, avg=7816.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.05%, ctx=82, 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=174287: Tue Aug 25 09:43:15 2026 write: IOPS=1, BW=5931KiB/s (6073kB/s)(12.0MiB/2072msec); 0 zone resets clat (msec): min=364, max=1190, avg=687.24, stdev=441.40 lat (msec): min=365, max=1190, avg=687.61, stdev=441.37 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 5859, max= 8094, per=74.67%, avg=6976.50, stdev=1580.38, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.50%, ctx=46, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6107KiB/s (6253kB/s), 1527KiB/s-5009KiB/s (1563kB/s-5130kB/s), io=16.0MiB (16.8MB), run=2453-2683msec WRITE: bw=9344KiB/s (9568kB/s), 3053KiB/s-5931KiB/s (3127kB/s-6073kB/s), io=32.0MiB (33.6MB), run=2072-3507msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174289: Tue Aug 25 09:43:15 2026 read: IOPS=1, BW=4107KiB/s (4206kB/s)(12.0MiB/2992msec) clat (msec): min=340, max=1609, avg=992.20, stdev=635.66 lat (msec): min=340, max=1609, avg=992.20, stdev=635.66 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 1028], 50.00th=[ 1028], 60.00th=[ 1028], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] 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 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.07%, sys=3.68%, ctx=45, 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=174290: Tue Aug 25 09:43:15 2026 read: IOPS=0, BW=1291KiB/s (1322kB/s)(4096KiB/3173msec) clat (nsec): min=1219.8M, max=1219.8M, avg=1219794337.00, stdev= 0.00 lat (nsec): min=1219.8M, max=1219.8M, avg=1219795326.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1217], 5.00th=[ 1217], 10.00th=[ 1217], 20.00th=[ 1217], | 30.00th=[ 1217], 40.00th=[ 1217], 50.00th=[ 1217], 60.00th=[ 1217], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2582KiB/s (2644kB/s)(8192KiB/3173msec); 0 zone resets clat (msec): min=804, max=1146, avg=975.61, stdev=241.58 lat (msec): min=805, max=1146, avg=975.96, stdev=241.61 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 1150], | 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= 8159, max= 8159, per=79.01%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.51%, ctx=58, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174291: Tue Aug 25 09:43:15 2026 write: IOPS=1, BW=4472KiB/s (4579kB/s)(12.0MiB/2748msec); 0 zone resets clat (msec): min=696, max=1147, avg=915.27, stdev=225.80 lat (msec): min=696, max=1147, avg=915.56, stdev=225.88 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 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= 7907, max= 7968, per=76.86%, avg=7937.50, stdev=43.13, 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=2.55%, ctx=36, 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=174292: Tue Aug 25 09:43:15 2026 write: IOPS=1, BW=5616KiB/s (5751kB/s)(12.0MiB/2188msec); 0 zone resets clat (msec): min=670, max=783, avg=728.13, stdev=56.48 lat (msec): min=671, max=783, avg=728.50, stdev=56.40 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7907, max= 8159, per=77.79%, avg=8033.00, stdev=178.19, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.05%, sys=6.86%, ctx=51, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=5164KiB/s (5287kB/s), 1291KiB/s-4107KiB/s (1322kB/s-4206kB/s), io=16.0MiB (16.8MB), run=2992-3173msec WRITE: bw=10.1MiB/s (10.6MB/s), 2582KiB/s-5616KiB/s (2644kB/s-5751kB/s), io=32.0MiB (33.6MB), run=2188-3173msec