== sanity test 398b: DIO and buffer IO race ============== 22:28:02 (1789784882) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.89557 s, 5.7 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=180883: Fri Sep 18 22:30:32 2026 read: IOPS=12, BW=48.4KiB/s (49.5kB/s)(5992KiB/123919msec) clat (usec): min=32, max=740581, avg=45998.47, stdev=35876.57 lat (usec): min=32, max=740583, avg=46001.48, stdev=35875.95 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 10552], 10.00th=[ 16450], 20.00th=[ 21890], | 30.00th=[ 26870], 40.00th=[ 32113], 50.00th=[ 38536], 60.00th=[ 46400], | 70.00th=[ 54789], 80.00th=[ 65274], 90.00th=[ 84411], 95.00th=[103285], | 99.00th=[152044], 99.50th=[185598], 99.90th=[316670], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 7, max= 95, per=25.08%, avg=47.66, stdev=20.00, samples=244 iops : min= 1, max= 23, avg=11.23, stdev= 5.01, samples=244 write: IOPS=12, BW=50.8KiB/s (52.0kB/s)(6296KiB/123919msec); 0 zone resets clat (usec): min=878, max=486657, avg=34666.95, stdev=38435.54 lat (usec): min=879, max=486658, avg=34671.58, stdev=38434.80 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1254], 10.00th=[ 1713], 20.00th=[ 3064], | 30.00th=[ 6128], 40.00th=[ 12780], 50.00th=[ 23200], 60.00th=[ 32900], | 70.00th=[ 45351], 80.00th=[ 61604], 90.00th=[ 85459], 95.00th=[108528], | 99.00th=[152044], 99.50th=[181404], 99.90th=[258999], 99.95th=[488637], | 99.99th=[488637] bw ( KiB/s): min= 7, max= 159, per=25.32%, avg=50.40, stdev=23.45, samples=243 iops : min= 1, max= 39, avg=11.91, stdev= 5.89, samples=243 lat (usec) : 50=0.20%, 100=1.40%, 250=0.16%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=6.71%, 4=5.37%, 10=7.13%, 20=10.42%, 50=37.50% lat (msec) : 100=24.67%, 250=6.15%, 500=0.13%, 750=0.03% cpu : usr=0.07%, sys=4.88%, ctx=6599, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180884: Fri Sep 18 22:30:32 2026 read: IOPS=12, BW=48.0KiB/s (49.2kB/s)(5940KiB/123749msec) clat (usec): min=43, max=761276, avg=46155.98, stdev=35283.30 lat (usec): min=45, max=761278, avg=46157.56, stdev=35283.54 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 13042], 10.00th=[ 16909], 20.00th=[ 22414], | 30.00th=[ 27132], 40.00th=[ 32900], 50.00th=[ 39584], 60.00th=[ 46924], | 70.00th=[ 55313], 80.00th=[ 65274], 90.00th=[ 82314], 95.00th=[103285], | 99.00th=[143655], 99.50th=[175113], 99.90th=[367002], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 7, max= 103, per=25.07%, avg=47.64, stdev=18.87, samples=243 iops : min= 1, max= 25, avg=11.21, stdev= 4.73, samples=243 write: IOPS=12, BW=51.3KiB/s (52.5kB/s)(6348KiB/123749msec); 0 zone resets clat (usec): min=857, max=264674, avg=34527.87, stdev=37522.17 lat (usec): min=858, max=264676, avg=34529.69, stdev=37522.34 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1254], 10.00th=[ 1975], 20.00th=[ 3720], | 30.00th=[ 6783], 40.00th=[ 13960], 50.00th=[ 24249], 60.00th=[ 32900], | 70.00th=[ 42730], 80.00th=[ 58459], 90.00th=[ 83362], 95.00th=[111674], | 99.00th=[164627], 99.50th=[185598], 99.90th=[261096], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 7, max= 126, per=25.49%, avg=50.73, stdev=23.26, samples=243 iops : min= 1, max= 31, avg=12.01, stdev= 5.85, samples=243 lat (usec) : 50=0.16%, 100=0.98%, 250=0.20%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.10% lat (msec) : 2=5.34%, 4=5.44%, 10=8.01%, 20=10.48%, 50=39.36% lat (msec) : 100=23.76%, 250=5.99%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=4.80%, ctx=6580, 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=180885: Fri Sep 18 22:30:32 2026 read: IOPS=12, BW=49.3KiB/s (50.4kB/s)(6028KiB/122380msec) clat (usec): min=38, max=533065, avg=44661.99, stdev=31888.09 lat (usec): min=38, max=533066, avg=44668.82, stdev=31884.55 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 8586], 10.00th=[ 15533], 20.00th=[ 22152], | 30.00th=[ 27132], 40.00th=[ 32900], 50.00th=[ 39060], 60.00th=[ 45351], | 70.00th=[ 53216], 80.00th=[ 63701], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[145753], 99.50th=[168821], 99.90th=[304088], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 7, max= 100, per=25.91%, avg=49.22, stdev=19.47, samples=238 iops : min= 1, max= 25, avg=11.62, stdev= 4.88, samples=238 write: IOPS=12, BW=51.2KiB/s (52.4kB/s)(6260KiB/122380msec); 0 zone resets clat (usec): min=979, max=774964, avg=34910.54, stdev=41432.97 lat (usec): min=981, max=774966, avg=34928.58, stdev=41431.05 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1237], 10.00th=[ 1647], 20.00th=[ 3425], | 30.00th=[ 6652], 40.00th=[ 14877], 50.00th=[ 23987], 60.00th=[ 32900], | 70.00th=[ 44303], 80.00th=[ 61080], 90.00th=[ 84411], 95.00th=[105382], | 99.00th=[160433], 99.50th=[189793], 99.90th=[341836], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 7, max= 126, per=25.44%, avg=50.62, stdev=23.17, samples=240 iops : min= 1, max= 31, avg=11.98, stdev= 5.82, samples=240 lat (usec) : 50=0.13%, 100=1.79%, 250=0.23%, 500=0.03%, 1000=0.10% lat (msec) : 2=6.12%, 4=5.34%, 10=6.87%, 20=10.71%, 50=38.93% lat (msec) : 100=24.38%, 250=5.24%, 500=0.07%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=4.81%, ctx=6493, 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=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=180886: Fri Sep 18 22:30:32 2026 read: IOPS=12, BW=48.1KiB/s (49.2kB/s)(6052KiB/125901msec) clat (usec): min=38, max=236080, avg=44518.82, stdev=31245.51 lat (usec): min=38, max=236081, avg=44521.96, stdev=31245.55 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 449], 10.00th=[ 15139], 20.00th=[ 21103], | 30.00th=[ 26870], 40.00th=[ 31589], 50.00th=[ 37487], 60.00th=[ 44303], | 70.00th=[ 52691], 80.00th=[ 63701], 90.00th=[ 82314], 95.00th=[101188], | 99.00th=[164627], 99.50th=[173016], 99.90th=[219153], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 7, max= 136, per=25.44%, avg=48.33, stdev=20.01, samples=244 iops : min= 1, max= 34, avg=11.40, stdev= 5.04, samples=244 write: IOPS=12, BW=49.5KiB/s (50.7kB/s)(6236KiB/125901msec); 0 zone resets clat (usec): min=1051, max=769290, avg=37253.40, stdev=42551.50 lat (usec): min=1052, max=769293, avg=37256.84, stdev=42552.82 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1303], 10.00th=[ 1909], 20.00th=[ 3982], | 30.00th=[ 7504], 40.00th=[ 16057], 50.00th=[ 25560], 60.00th=[ 35914], | 70.00th=[ 47449], 80.00th=[ 65274], 90.00th=[ 88605], 95.00th=[111674], | 99.00th=[166724], 99.50th=[191890], 99.90th=[329253], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 7, max= 149, per=24.76%, avg=49.28, stdev=22.11, samples=246 iops : min= 1, max= 37, avg=11.64, stdev= 5.55, samples=246 lat (usec) : 50=0.39%, 100=1.82%, 250=0.16%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.60%, 4=4.72%, 10=6.61%, 20=11.49%, 50=38.31% lat (msec) : 100=24.51%, 250=6.12%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=4.68%, ctx=6517, 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=191KiB/s (195kB/s), 48.0KiB/s-49.3KiB/s (49.2kB/s-50.4kB/s), io=23.4MiB (24.6MB), run=122380-125901msec WRITE: bw=200KiB/s (204kB/s), 49.5KiB/s-51.3KiB/s (50.7kB/s-52.5kB/s), io=24.6MiB (25.7MB), run=122380-125901msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180878: Fri Sep 18 22:31:21 2026 read: IOPS=8, BW=34.7KiB/s (35.6kB/s)(5992KiB/172544msec) clat (msec): min=5, max=770, avg=43.73, stdev=40.98 lat (msec): min=5, max=770, avg=43.74, stdev=40.98 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 61], 90.00th=[ 91], 95.00th=[ 122], | 99.00th=[ 176], 99.50th=[ 197], 99.90th=[ 317], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 111, per=25.84%, avg=35.15, stdev=21.76, samples=331 iops : min= 1, max= 27, avg= 8.12, stdev= 5.48, samples=331 write: IOPS=9, BW=36.5KiB/s (37.4kB/s)(6296KiB/172544msec); 0 zone resets clat (msec): min=11, max=405, avg=67.69, stdev=45.18 lat (msec): min=11, max=405, avg=67.69, stdev=45.18 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 65], | 70.00th=[ 79], 80.00th=[ 95], 90.00th=[ 123], 95.00th=[ 157], | 99.00th=[ 239], 99.50th=[ 259], 99.90th=[ 347], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 7, max= 107, per=25.43%, avg=36.37, stdev=19.75, samples=336 iops : min= 1, max= 26, avg= 8.43, stdev= 4.97, samples=336 lat (msec) : 10=1.73%, 20=12.47%, 50=43.98%, 100=28.81%, 250=12.53% lat (msec) : 500=0.46%, 1000=0.03% cpu : usr=0.05%, sys=1.63%, ctx=4688, 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=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=180880: Fri Sep 18 22:31:21 2026 read: IOPS=8, BW=33.8KiB/s (34.6kB/s)(5940KiB/175694msec) clat (msec): min=4, max=747, avg=45.23, stdev=43.26 lat (msec): min=4, max=747, avg=45.24, stdev=43.26 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 65], 90.00th=[ 102], 95.00th=[ 129], | 99.00th=[ 182], 99.50th=[ 222], 99.90th=[ 338], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 111, per=25.22%, avg=34.30, stdev=21.85, samples=335 iops : min= 1, max= 27, avg= 7.91, stdev= 5.52, samples=335 write: IOPS=9, BW=36.1KiB/s (36.0kB/s)(6348KiB/175694msec); 0 zone resets clat (msec): min=12, max=579, avg=68.09, stdev=47.03 lat (msec): min=12, max=579, avg=68.09, stdev=47.03 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 56], 60.00th=[ 65], | 70.00th=[ 79], 80.00th=[ 97], 90.00th=[ 129], 95.00th=[ 155], | 99.00th=[ 226], 99.50th=[ 255], 99.90th=[ 542], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 111, per=25.02%, avg=35.78, stdev=20.40, samples=343 iops : min= 1, max= 27, avg= 8.27, stdev= 5.13, samples=343 lat (msec) : 10=1.89%, 20=12.21%, 50=43.55%, 100=27.67%, 250=14.26% lat (msec) : 500=0.33%, 750=0.10% cpu : usr=0.06%, sys=1.66%, ctx=4703, 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=180881: Fri Sep 18 22:31:21 2026 read: IOPS=8, BW=34.9KiB/s (35.8kB/s)(6028KiB/172495msec) clat (msec): min=5, max=396, avg=45.06, stdev=40.72 lat (msec): min=5, max=396, avg=45.06, stdev=40.72 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 63], 90.00th=[ 93], 95.00th=[ 127], | 99.00th=[ 190], 99.50th=[ 279], 99.90th=[ 355], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 128, per=25.56%, avg=34.77, stdev=20.99, samples=337 iops : min= 1, max= 32, avg= 8.02, stdev= 5.29, samples=337 write: IOPS=9, BW=36.3KiB/s (37.2kB/s)(6260KiB/172495msec); 0 zone resets clat (msec): min=7, max=765, avg=66.55, stdev=46.23 lat (msec): min=7, max=765, avg=66.55, stdev=46.24 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 64], | 70.00th=[ 77], 80.00th=[ 94], 90.00th=[ 124], 95.00th=[ 146], | 99.00th=[ 222], 99.50th=[ 257], 99.90th=[ 347], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 104, per=25.46%, avg=36.41, stdev=20.17, samples=334 iops : min= 1, max= 26, avg= 8.43, stdev= 5.08, samples=334 lat (msec) : 10=1.76%, 20=11.88%, 50=44.63%, 100=28.42%, 250=12.76% lat (msec) : 500=0.52%, 1000=0.03% cpu : usr=0.04%, sys=1.62%, ctx=4514, 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=180882: Fri Sep 18 22:31:21 2026 read: IOPS=8, BW=34.8KiB/s (35.6kB/s)(6052KiB/174125msec) clat (msec): min=5, max=302, avg=44.26, stdev=37.69 lat (msec): min=5, max=302, avg=44.27, stdev=37.69 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 47], 80.00th=[ 63], 90.00th=[ 95], 95.00th=[ 127], | 99.00th=[ 180], 99.50th=[ 192], 99.90th=[ 300], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 7, max= 112, per=25.99%, avg=35.35, stdev=21.94, samples=332 iops : min= 1, max= 28, avg= 8.18, stdev= 5.53, samples=332 write: IOPS=8, BW=35.8KiB/s (36.7kB/s)(6236KiB/174125msec); 0 zone resets clat (msec): min=9, max=789, avg=68.42, stdev=50.09 lat (msec): min=9, max=789, avg=68.42, stdev=50.09 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 65], | 70.00th=[ 79], 80.00th=[ 96], 90.00th=[ 125], 95.00th=[ 155], | 99.00th=[ 218], 99.50th=[ 309], 99.90th=[ 575], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 115, per=25.00%, avg=35.75, stdev=19.52, samples=338 iops : min= 1, max= 28, avg= 8.27, stdev= 4.91, samples=338 lat (msec) : 10=1.66%, 20=11.59%, 50=45.28%, 100=28.26%, 250=12.86% lat (msec) : 500=0.26%, 750=0.07%, 1000=0.03% cpu : usr=0.06%, sys=1.71%, ctx=4759, 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=137KiB/s (140kB/s), 33.8KiB/s-34.9KiB/s (34.6kB/s-35.8kB/s), io=23.4MiB (24.6MB), run=172495-175694msec WRITE: bw=143KiB/s (147kB/s), 35.8KiB/s-36.5KiB/s (36.7kB/s-37.4kB/s), io=24.6MiB (25.7MB), run=172495-175694msec 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=180940: Fri Sep 18 22:32:06 2026 read: IOPS=12, BW=194KiB/s (198kB/s)(5920KiB/30583msec) clat (usec): min=32, max=166616, avg=42131.39, stdev=29622.75 lat (usec): min=32, max=166618, avg=42134.94, stdev=29623.48 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 62], 10.00th=[ 81], 20.00th=[ 21365], | 30.00th=[ 26870], 40.00th=[ 31589], 50.00th=[ 38011], 60.00th=[ 43779], | 70.00th=[ 50594], 80.00th=[ 61080], 90.00th=[ 84411], 95.00th=[ 95945], | 99.00th=[141558], 99.50th=[160433], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 63, max= 558, per=25.68%, avg=194.15, stdev=87.52, samples=60 iops : min= 3, max= 34, avg=11.35, stdev= 5.49, samples=60 write: IOPS=13, BW=208KiB/s (213kB/s)(6368KiB/30583msec); 0 zone resets clat (usec): min=1468, max=218439, avg=36507.50, stdev=35579.98 lat (usec): min=1469, max=218442, avg=36511.25, stdev=35581.14 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 1975], 10.00th=[ 2966], 20.00th=[ 5473], | 30.00th=[ 10290], 40.00th=[ 16909], 50.00th=[ 25560], 60.00th=[ 35390], | 70.00th=[ 46400], 80.00th=[ 64750], 90.00th=[ 86508], 95.00th=[109577], | 99.00th=[149947], 99.50th=[200279], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 22, max= 475, per=26.25%, avg=208.95, stdev=90.52, samples=60 iops : min= 1, max= 29, avg=12.30, stdev= 5.69, samples=60 lat (usec) : 50=0.65%, 100=4.43%, 250=0.26%, 500=0.39%, 1000=0.13% lat (msec) : 2=2.99%, 4=5.08%, 10=7.55%, 20=9.64%, 50=39.45% lat (msec) : 100=24.22%, 250=5.21% cpu : usr=0.07%, sys=5.41%, ctx=1682, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180941: Fri Sep 18 22:32:06 2026 read: IOPS=11, BW=182KiB/s (186kB/s)(5744KiB/31643msec) clat (usec): min=41, max=274209, avg=47179.66, stdev=34236.55 lat (usec): min=41, max=274211, avg=47181.10, stdev=34236.47 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 63], 10.00th=[ 102], 20.00th=[ 21890], | 30.00th=[ 28443], 40.00th=[ 36439], 50.00th=[ 43779], 60.00th=[ 52691], | 70.00th=[ 60031], 80.00th=[ 69731], 90.00th=[ 84411], 95.00th=[103285], | 99.00th=[177210], 99.50th=[204473], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 21, max= 383, per=24.58%, avg=185.84, stdev=78.77, samples=61 iops : min= 1, max= 23, avg=10.84, stdev= 4.96, samples=61 write: IOPS=12, BW=207KiB/s (212kB/s)(6544KiB/31643msec); 0 zone resets clat (usec): min=1386, max=222355, avg=34780.16, stdev=36578.02 lat (usec): min=1388, max=222358, avg=34788.55, stdev=36574.32 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 2245], 10.00th=[ 3654], 20.00th=[ 6259], | 30.00th=[ 8848], 40.00th=[ 15008], 50.00th=[ 21890], 60.00th=[ 32113], | 70.00th=[ 43779], 80.00th=[ 58459], 90.00th=[ 81265], 95.00th=[111674], | 99.00th=[175113], 99.50th=[175113], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 31, max= 445, per=26.08%, avg=207.61, stdev=89.75, samples=62 iops : min= 1, max= 27, avg=12.23, stdev= 5.67, samples=62 lat (usec) : 50=0.26%, 100=4.30%, 250=0.65%, 750=0.26% lat (msec) : 2=2.21%, 4=3.65%, 10=11.98%, 20=10.03%, 50=34.11% lat (msec) : 100=26.82%, 250=5.60%, 500=0.13% cpu : usr=0.07%, sys=5.19%, ctx=1730, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180942: Fri Sep 18 22:32:06 2026 read: IOPS=12, BW=206KiB/s (211kB/s)(6256KiB/30347msec) clat (usec): min=39, max=207181, avg=43470.59, stdev=30607.53 lat (usec): min=39, max=207182, avg=43471.96, stdev=30607.65 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 64], 10.00th=[ 78], 20.00th=[ 22938], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 46924], | 70.00th=[ 55837], 80.00th=[ 64226], 90.00th=[ 78119], 95.00th=[ 94897], | 99.00th=[156238], 99.50th=[168821], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 63, max= 636, per=27.21%, avg=205.69, stdev=98.50, samples=59 iops : min= 3, max= 39, avg=12.07, stdev= 6.21, samples=59 write: IOPS=12, BW=199KiB/s (204kB/s)(6032KiB/30347msec); 0 zone resets clat (usec): min=1496, max=239967, avg=35044.49, stdev=35841.22 lat (usec): min=1499, max=239969, avg=35046.76, stdev=35841.26 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2114], 10.00th=[ 3130], 20.00th=[ 5145], | 30.00th=[ 8717], 40.00th=[ 14222], 50.00th=[ 24773], 60.00th=[ 32113], | 70.00th=[ 46400], 80.00th=[ 63177], 90.00th=[ 80217], 95.00th=[104334], | 99.00th=[164627], 99.50th=[181404], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 382, per=24.54%, avg=195.34, stdev=90.58, samples=59 iops : min= 1, max= 23, avg=11.41, stdev= 5.68, samples=59 lat (usec) : 50=0.65%, 100=5.47%, 250=0.65%, 500=0.26%, 1000=0.13% lat (msec) : 2=2.47%, 4=5.47%, 10=9.38%, 20=7.03%, 50=36.59% lat (msec) : 100=27.08%, 250=4.82% cpu : usr=0.07%, sys=5.26%, ctx=1680, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180943: Fri Sep 18 22:32:06 2026 read: IOPS=12, BW=199KiB/s (204kB/s)(6032KiB/30280msec) clat (usec): min=34, max=156374, avg=42142.15, stdev=29052.04 lat (usec): min=35, max=156375, avg=42143.49, stdev=29052.09 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 65], 10.00th=[ 108], 20.00th=[ 19530], | 30.00th=[ 26346], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 45876], | 70.00th=[ 53740], 80.00th=[ 64750], 90.00th=[ 80217], 95.00th=[ 89654], | 99.00th=[137364], 99.50th=[143655], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 31, max= 470, per=26.16%, avg=197.76, stdev=82.86, samples=59 iops : min= 1, max= 29, avg=11.59, stdev= 5.25, samples=59 write: IOPS=12, BW=207KiB/s (212kB/s)(6256KiB/30280msec); 0 zone resets clat (usec): min=1494, max=224663, avg=36121.54, stdev=36612.76 lat (usec): min=1497, max=224666, avg=36123.97, stdev=36612.69 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2343], 10.00th=[ 3490], 20.00th=[ 5800], | 30.00th=[ 8979], 40.00th=[ 17695], 50.00th=[ 26084], 60.00th=[ 33817], | 70.00th=[ 45876], 80.00th=[ 59507], 90.00th=[ 86508], 95.00th=[105382], | 99.00th=[168821], 99.50th=[206570], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 63, max= 407, per=25.90%, avg=206.14, stdev=89.69, samples=59 iops : min= 3, max= 25, avg=12.12, stdev= 5.69, samples=59 lat (usec) : 50=0.39%, 100=4.30%, 250=1.56%, 500=0.26%, 750=0.13% lat (msec) : 2=1.95%, 4=4.69%, 10=10.16%, 20=8.59%, 50=37.24% lat (msec) : 100=26.04%, 250=4.69% cpu : usr=0.07%, sys=5.25%, ctx=1627, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=757KiB/s (775kB/s), 182KiB/s-206KiB/s (186kB/s-211kB/s), io=23.4MiB (24.5MB), run=30280-31643msec WRITE: bw=796KiB/s (815kB/s), 199KiB/s-208KiB/s (204kB/s-213kB/s), io=24.6MiB (25.8MB), run=30280-31643msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180936: Fri Sep 18 22:32:21 2026 read: IOPS=8, BW=128KiB/s (131kB/s)(5920KiB/46127msec) clat (msec): min=8, max=291, avg=50.39, stdev=42.67 lat (msec): min=8, max=291, avg=50.39, stdev=42.67 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 44], | 70.00th=[ 52], 80.00th=[ 66], 90.00th=[ 99], 95.00th=[ 138], | 99.00th=[ 234], 99.50th=[ 266], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 319, per=25.21%, avg=129.58, stdev=73.29, samples=90 iops : min= 1, max= 19, avg= 7.31, stdev= 4.57, samples=90 write: IOPS=8, BW=138KiB/s (141kB/s)(6368KiB/46127msec); 0 zone resets clat (msec): min=18, max=264, avg=68.63, stdev=44.21 lat (msec): min=18, max=264, avg=68.64, stdev=44.21 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 47], 50.00th=[ 53], 60.00th=[ 65], | 70.00th=[ 78], 80.00th=[ 99], 90.00th=[ 127], 95.00th=[ 171], | 99.00th=[ 234], 99.50th=[ 241], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 31, max= 318, per=25.47%, avg=137.79, stdev=72.87, samples=91 iops : min= 1, max= 19, avg= 7.82, stdev= 4.56, samples=91 lat (msec) : 10=0.65%, 20=6.64%, 50=49.22%, 100=28.65%, 250=14.32% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.73%, ctx=1222, 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=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=180937: Fri Sep 18 22:32:21 2026 read: IOPS=7, BW=123KiB/s (126kB/s)(5744KiB/46524msec) clat (msec): min=8, max=240, avg=51.20, stdev=40.10 lat (msec): min=8, max=240, avg=51.20, stdev=40.10 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 45], | 70.00th=[ 52], 80.00th=[ 69], 90.00th=[ 108], 95.00th=[ 140], | 99.00th=[ 211], 99.50th=[ 232], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 23, max= 383, per=25.15%, avg=129.29, stdev=72.73, samples=86 iops : min= 1, max= 23, avg= 7.29, stdev= 4.59, samples=86 write: IOPS=8, BW=141KiB/s (144kB/s)(6544KiB/46524msec); 0 zone resets clat (msec): min=14, max=274, avg=67.84, stdev=42.05 lat (msec): min=14, max=274, avg=67.84, stdev=42.05 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 49], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 79], 80.00th=[ 101], 90.00th=[ 129], 95.00th=[ 146], | 99.00th=[ 203], 99.50th=[ 226], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 351, per=26.20%, avg=141.75, stdev=73.47, samples=89 iops : min= 1, max= 21, avg= 8.07, stdev= 4.59, samples=89 lat (msec) : 10=0.26%, 20=7.03%, 50=48.44%, 100=27.47%, 250=16.54% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=1.75%, ctx=1265, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180938: Fri Sep 18 22:32:21 2026 read: IOPS=8, BW=136KiB/s (139kB/s)(6256KiB/46158msec) clat (msec): min=10, max=271, avg=49.14, stdev=37.82 lat (msec): min=10, max=271, avg=49.14, stdev=37.82 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 34], 50.00th=[ 39], 60.00th=[ 44], | 70.00th=[ 51], 80.00th=[ 64], 90.00th=[ 92], 95.00th=[ 134], | 99.00th=[ 218], 99.50th=[ 268], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 345, per=27.03%, avg=138.93, stdev=78.32, samples=89 iops : min= 1, max= 21, avg= 7.90, stdev= 4.92, samples=89 write: IOPS=8, BW=131KiB/s (134kB/s)(6032KiB/46158msec); 0 zone resets clat (msec): min=13, max=274, avg=70.18, stdev=46.42 lat (msec): min=13, max=274, avg=70.19, stdev=46.42 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 63], | 70.00th=[ 78], 80.00th=[ 106], 90.00th=[ 146], 95.00th=[ 165], | 99.00th=[ 226], 99.50th=[ 268], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 319, per=24.53%, avg=132.69, stdev=69.57, samples=89 iops : min= 1, max= 19, avg= 7.49, stdev= 4.40, samples=89 lat (msec) : 20=7.29%, 50=49.35%, 100=28.78%, 250=14.06%, 500=0.52% cpu : usr=0.04%, sys=1.86%, ctx=1200, 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=180939: Fri Sep 18 22:32:21 2026 read: IOPS=8, BW=132KiB/s (136kB/s)(6032KiB/45571msec) clat (msec): min=8, max=278, avg=51.53, stdev=41.11 lat (msec): min=8, max=278, avg=51.53, stdev=41.11 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 27], 40.00th=[ 34], 50.00th=[ 40], 60.00th=[ 44], | 70.00th=[ 56], 80.00th=[ 74], 90.00th=[ 109], 95.00th=[ 146], | 99.00th=[ 186], 99.50th=[ 255], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 351, per=26.02%, avg=133.72, stdev=75.03, samples=87 iops : min= 1, max= 21, avg= 7.57, stdev= 4.72, samples=87 write: IOPS=8, BW=137KiB/s (141kB/s)(6256KiB/45571msec); 0 zone resets clat (msec): min=13, max=244, avg=66.64, stdev=43.09 lat (msec): min=13, max=244, avg=66.64, stdev=43.10 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 45], 50.00th=[ 52], 60.00th=[ 62], | 70.00th=[ 75], 80.00th=[ 102], 90.00th=[ 124], 95.00th=[ 159], | 99.00th=[ 232], 99.50th=[ 236], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 30, max= 319, per=25.66%, avg=138.82, stdev=68.29, samples=87 iops : min= 1, max= 19, avg= 7.89, stdev= 4.30, samples=87 lat (msec) : 10=0.91%, 20=7.29%, 50=48.96%, 100=27.47%, 250=15.10% lat (msec) : 500=0.26% cpu : usr=0.04%, sys=1.81%, ctx=1220, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=515KiB/s (527kB/s), 123KiB/s-136KiB/s (126kB/s-139kB/s), io=23.4MiB (24.5MB), run=45571-46524msec WRITE: bw=542KiB/s (555kB/s), 131KiB/s-141KiB/s (134kB/s-144kB/s), io=24.6MiB (25.8MB), run=45571-46524msec 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=180956: Fri Sep 18 22:32:34 2026 read: IOPS=1, BW=1870KiB/s (1915kB/s)(7168KiB/3833msec) clat (msec): min=97, max=500, avg=253.39, stdev=154.97 lat (msec): min=97, max=500, avg=253.39, stdev=154.97 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 131], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 232], 60.00th=[ 253], | 70.00th=[ 253], 80.00th=[ 426], 90.00th=[ 502], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 1969, max= 4432, per=67.60%, avg=2614.75, stdev=1211.88, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1336KiB/s (1368kB/s)(5120KiB/3833msec); 0 zone resets clat (msec): min=53, max=1103, avg=405.82, stdev=415.37 lat (msec): min=53, max=1103, avg=406.20, stdev=415.22 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 54], 10.00th=[ 54], 20.00th=[ 54], | 30.00th=[ 209], 40.00th=[ 209], 50.00th=[ 213], 60.00th=[ 213], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1477, max= 2027, per=35.05%, avg=1898.20, stdev=236.45, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=15.89%, ctx=571, 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=180957: Fri Sep 18 22:32:34 2026 read: IOPS=0, BW=387KiB/s (396kB/s)(2048KiB/5294msec) clat (msec): min=91, max=593, avg=342.60, stdev=354.56 lat (msec): min=91, max=593, avg=342.60, stdev=354.56 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 92], | 30.00th=[ 92], 40.00th=[ 92], 50.00th=[ 92], 60.00th=[ 592], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1471, max= 2019, per=45.11%, avg=1745.00, stdev=387.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1934KiB/s (1981kB/s)(10.0MiB/5294msec); 0 zone resets clat (msec): min=173, max=734, avg=452.67, stdev=197.58 lat (msec): min=182, max=734, avg=454.13, stdev=196.01 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 228], | 30.00th=[ 313], 40.00th=[ 355], 50.00th=[ 393], 60.00th=[ 414], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 701], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 1969, max= 4087, per=48.13%, avg=2606.14, stdev=1009.21, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 100=8.33%, 250=16.67%, 500=33.33%, 750=41.67% cpu : usr=0.02%, sys=14.00%, ctx=250, 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=180958: Fri Sep 18 22:32:34 2026 read: IOPS=1, BW=1428KiB/s (1462kB/s)(6144KiB/4303msec) clat (msec): min=219, max=816, avg=436.80, stdev=214.05 lat (msec): min=219, max=816, avg=436.80, stdev=214.05 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 220], 10.00th=[ 220], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 405], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1969, max= 4031, per=64.78%, avg=2505.50, stdev=1017.21, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1428KiB/s (1462kB/s)(6144KiB/4303msec); 0 zone resets clat (msec): min=97, max=454, avg=269.32, stdev=124.33 lat (msec): min=98, max=454, avg=269.65, stdev=124.39 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 220], 50.00th=[ 220], 60.00th=[ 300], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 2003, max= 2976, per=40.94%, avg=2216.80, stdev=424.74, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=14.85%, ctx=291, 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=180959: Fri Sep 18 22:32:34 2026 read: IOPS=1, BW=1319KiB/s (1350kB/s)(5120KiB/3883msec) clat (usec): min=623, max=740069, avg=339243.28, stdev=278623.80 lat (usec): min=624, max=740070, avg=339244.63, stdev=278623.78 clat percentiles (usec): | 1.00th=[ 627], 5.00th=[ 627], 10.00th=[ 627], 20.00th=[ 627], | 30.00th=[242222], 40.00th=[242222], 50.00th=[244319], 60.00th=[244319], | 70.00th=[467665], 80.00th=[467665], 90.00th=[742392], 95.00th=[742392], | 99.00th=[742392], 99.50th=[742392], 99.90th=[742392], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 1969, max= 6011, per=100.00%, avg=3990.00, stdev=2858.13, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1846KiB/s (1890kB/s)(7168KiB/3883msec); 0 zone resets clat (msec): min=157, max=745, avg=303.40, stdev=214.21 lat (msec): min=157, max=745, avg=303.50, stdev=214.22 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 167], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 218], 60.00th=[ 230], | 70.00th=[ 230], 80.00th=[ 418], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1481, max= 6131, per=63.19%, avg=3421.50, stdev=2111.77, samples=4 iops : min= 1, max= 5, avg= 2.50, stdev= 1.91, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=58.33%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=15.12%, ctx=192, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3869KiB/s (3961kB/s), 387KiB/s-1870KiB/s (396kB/s-1915kB/s), io=20.0MiB (20.0MB), run=3833-5294msec WRITE: bw=5416KiB/s (5546kB/s), 1336KiB/s-1934KiB/s (1368kB/s-1981kB/s), io=28.0MiB (29.4MB), run=3833-5294msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180961: Fri Sep 18 22:32:34 2026 read: IOPS=1, BW=1678KiB/s (1718kB/s)(7168KiB/4272msec) clat (msec): min=69, max=606, avg=291.35, stdev=208.44 lat (msec): min=69, max=606, avg=291.35, stdev=208.44 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 110], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 228], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 502], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1602, max= 3984, per=72.78%, avg=2853.75, stdev=1238.05, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1199KiB/s (1227kB/s)(5120KiB/4272msec); 0 zone resets clat (msec): min=185, max=685, avg=414.50, stdev=196.37 lat (msec): min=186, max=685, avg=414.59, stdev=196.36 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 186], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1924, max= 3175, per=43.30%, avg=2376.67, stdev=693.44, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=25.00% cpu : usr=0.02%, sys=6.06%, ctx=120, 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=180962: Fri Sep 18 22:32:34 2026 read: IOPS=0, BW=392KiB/s (402kB/s)(2048KiB/5223msec) clat (msec): min=167, max=538, avg=353.11, stdev=261.84 lat (msec): min=167, max=538, avg=353.11, stdev=261.84 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1744, max= 1980, per=47.49%, avg=1862.00, stdev=166.88, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1961KiB/s (2008kB/s)(10.0MiB/5223msec); 0 zone resets clat (msec): min=136, max=879, avg=446.46, stdev=253.24 lat (msec): min=136, max=879, avg=447.12, stdev=253.54 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 271], | 30.00th=[ 279], 40.00th=[ 309], 50.00th=[ 326], 60.00th=[ 368], | 70.00th=[ 384], 80.00th=[ 743], 90.00th=[ 768], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1924, max= 4079, per=48.93%, avg=2686.00, stdev=1073.55, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=16.67%, 500=50.00%, 750=16.67%, 1000=16.67% cpu : usr=0.00%, sys=6.59%, ctx=149, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180963: Fri Sep 18 22:32:34 2026 read: IOPS=1, BW=1364KiB/s (1396kB/s)(6144KiB/4506msec) clat (msec): min=133, max=549, avg=283.56, stdev=179.42 lat (msec): min=133, max=549, avg=283.56, stdev=179.42 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 138], | 30.00th=[ 138], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 257], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1587, max= 2039, per=48.77%, avg=1912.20, stdev=187.54, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1364KiB/s (1396kB/s)(6144KiB/4506msec); 0 zone resets clat (msec): min=174, max=699, avg=390.99, stdev=242.40 lat (msec): min=174, max=699, avg=391.10, stdev=242.42 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 481], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1992, max= 4087, per=46.22%, avg=2537.25, stdev=1033.37, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=25.00%, 750=25.00% cpu : usr=0.00%, sys=5.82%, ctx=85, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180964: Fri Sep 18 22:32:34 2026 read: IOPS=1, BW=1388KiB/s (1422kB/s)(5120KiB/3688msec) clat (msec): min=89, max=455, avg=189.58, stdev=154.54 lat (msec): min=89, max=455, avg=189.58, stdev=154.54 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 90], | 30.00th=[ 102], 40.00th=[ 102], 50.00th=[ 107], 60.00th=[ 107], | 70.00th=[ 197], 80.00th=[ 197], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 1992, max= 4845, per=87.18%, avg=3418.50, stdev=2017.38, samples=2 iops : min= 1, max= 4, avg= 2.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1943KiB/s (1989kB/s)(7168KiB/3690msec); 0 zone resets clat (msec): min=100, max=1053, avg=386.80, stdev=319.96 lat (msec): min=101, max=1053, avg=387.11, stdev=319.91 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 157], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 309], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 493], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 1345, max= 6131, per=70.22%, avg=3854.33, stdev=2401.47, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=41.67%, 2000=8.33% cpu : usr=0.11%, sys=5.86%, ctx=97, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3921KiB/s (4015kB/s), 392KiB/s-1678KiB/s (402kB/s-1718kB/s), io=20.0MiB (20.0MB), run=3688-5223msec WRITE: bw=5490KiB/s (5621kB/s), 1199KiB/s-1961KiB/s (1227kB/s-2008kB/s), io=28.0MiB (29.4MB), run=3690-5223msec 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=180971: Fri Sep 18 22:32:53 2026 read: IOPS=1, BW=7817KiB/s (8004kB/s)(12.0MiB/1572msec) clat (msec): min=401, max=556, avg=485.15, stdev=78.04 lat (msec): min=401, max=556, avg=485.15, stdev=78.04 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 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=66.67%, 750=33.33% cpu : usr=0.19%, sys=7.38%, ctx=55, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180972: Fri Sep 18 22:32:53 2026 read: IOPS=0, BW=845KiB/s (865kB/s)(4096KiB/4847msec) clat (nsec): min=957475k, max=957475k, avg=957474884.00, stdev= 0.00 lat (nsec): min=957478k, max=957478k, avg=957477970.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 961], 5.00th=[ 961], 10.00th=[ 961], 20.00th=[ 961], | 30.00th=[ 961], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1690KiB/s (1731kB/s)(8192KiB/4847msec); 0 zone resets clat (msec): min=1378, max=2016, avg=1697.54, stdev=451.34 lat (msec): min=1379, max=2017, avg=1698.27, stdev=450.80 clat percentiles (msec): | 1.00th=[ 1385], 5.00th=[ 1385], 10.00th=[ 1385], 20.00th=[ 1385], | 30.00th=[ 1385], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 2022], | 70.00th=[ 2022], 80.00th=[ 2022], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 7433, max= 7433, per=100.00%, avg=7433.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.34%, ctx=35, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180973: Fri Sep 18 22:32:53 2026 write: IOPS=0, BW=3612KiB/s (3699kB/s)(12.0MiB/3402msec); 0 zone resets clat (msec): min=743, max=1188, avg=1025.70, stdev=245.40 lat (msec): min=744, max=1189, avg=1027.87, stdev=246.50 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 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= 8126, max= 8159, per=100.00%, avg=8142.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.09%, sys=2.76%, ctx=48, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180974: Fri Sep 18 22:32:53 2026 write: IOPS=0, BW=3634KiB/s (3722kB/s)(12.0MiB/3381msec); 0 zone resets clat (msec): min=694, max=1692, avg=1031.78, stdev=571.96 lat (msec): min=695, max=1693, avg=1032.61, stdev=572.70 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 709], 50.00th=[ 709], 60.00th=[ 709], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=2.46%, ctx=53, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=3380KiB/s (3461kB/s), 845KiB/s-7817KiB/s (865kB/s-8004kB/s), io=16.0MiB (16.8MB), run=1572-4847msec WRITE: bw=6760KiB/s (6923kB/s), 1690KiB/s-3634KiB/s (1731kB/s-3722kB/s), io=32.0MiB (33.6MB), run=3381-4847msec rand-rw: (groupid=0, jobs=1): err= 0: pid=180976: Fri Sep 18 22:32:53 2026 read: IOPS=0, BW=3584KiB/s (3670kB/s)(12.0MiB/3429msec) clat (msec): min=804, max=1319, avg=1142.42, stdev=293.02 lat (msec): min=804, max=1319, avg=1142.42, stdev=293.02 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, 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=7.64%, ctx=216, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180977: Fri Sep 18 22:32:53 2026 read: IOPS=0, BW=1113KiB/s (1139kB/s)(4096KiB/3681msec) clat (nsec): min=1182.7M, max=1182.7M, avg=1182728106.00, stdev= 0.00 lat (nsec): min=1182.7M, max=1182.7M, avg=1182731469.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 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= 7846, max= 7846, per=100.00%, avg=7846.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2225KiB/s (2279kB/s)(8192KiB/3681msec); 0 zone resets clat (msec): min=1070, max=1422, avg=1246.47, stdev=248.89 lat (msec): min=1071, max=1422, avg=1247.03, stdev=248.82 clat percentiles (msec): | 1.00th=[ 1070], 5.00th=[ 1070], 10.00th=[ 1070], 20.00th=[ 1070], | 30.00th=[ 1070], 40.00th=[ 1070], 50.00th=[ 1070], 60.00th=[ 1418], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8047, max= 8047, per=94.36%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=100.00% cpu : usr=0.05%, sys=2.74%, ctx=69, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180978: Fri Sep 18 22:32:53 2026 write: IOPS=0, BW=3198KiB/s (3275kB/s)(12.0MiB/3842msec); 0 zone resets clat (msec): min=387, max=1785, avg=1278.88, stdev=774.60 lat (msec): min=390, max=1785, avg=1280.14, stdev=773.01 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 1670], 50.00th=[ 1670], 60.00th=[ 1670], | 70.00th=[ 1787], 80.00th=[ 1787], 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= 8062, max= 8126, per=94.91%, avg=8094.00, stdev=45.25, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.33%, ctx=47, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=180979: Fri Sep 18 22:32:53 2026 write: IOPS=0, BW=3793KiB/s (3884kB/s)(12.0MiB/3240msec); 0 zone resets clat (msec): min=513, max=1645, avg=1078.74, stdev=565.91 lat (msec): min=514, max=1646, avg=1079.15, stdev=565.90 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1653], 80.00th=[ 1653], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 8078, max= 8175, per=95.29%, avg=8126.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.92%, 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=4451KiB/s (4558kB/s), 1113KiB/s-3584KiB/s (1139kB/s-3670kB/s), io=16.0MiB (16.8MB), run=3429-3681msec WRITE: bw=8529KiB/s (8734kB/s), 2225KiB/s-3793KiB/s (2279kB/s-3884kB/s), io=32.0MiB (33.6MB), run=3240-3842msec