== sanity test 398b: DIO and buffer IO race ============== 21:37:11 (1787103431) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.06333 s, 16.4 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=151726: Tue Aug 18 21:38:19 2026 read: IOPS=25, BW=102KiB/s (104kB/s)(5992KiB/58782msec) clat (usec): min=44, max=1061.8k, avg=20348.94, stdev=29719.08 lat (usec): min=45, max=1061.8k, avg=20350.41, stdev=29719.29 clat percentiles (usec): | 1.00th=[ 78], 5.00th=[ 180], 10.00th=[ 8160], | 20.00th=[ 10421], 30.00th=[ 12387], 40.00th=[ 14746], | 50.00th=[ 16909], 60.00th=[ 20055], 70.00th=[ 23987], | 80.00th=[ 28443], 90.00th=[ 34866], 95.00th=[ 41681], | 99.00th=[ 70779], 99.50th=[ 83362], 99.90th=[ 105382], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 13, max= 166, per=25.25%, avg=102.53, stdev=25.89, samples=115 iops : min= 3, max= 41, avg=25.17, stdev= 6.50, samples=115 write: IOPS=26, BW=107KiB/s (110kB/s)(6296KiB/58782msec); 0 zone resets clat (usec): min=837, max=114775, avg=17782.05, stdev=14962.68 lat (usec): min=837, max=114777, avg=17783.60, stdev=14962.61 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 2040], 10.00th=[ 2933], 20.00th=[ 4621], | 30.00th=[ 7373], 40.00th=[ 10683], 50.00th=[ 14484], 60.00th=[ 17957], | 70.00th=[ 22152], 80.00th=[ 28967], 90.00th=[ 38011], 95.00th=[ 45876], | 99.00th=[ 65799], 99.50th=[ 83362], 99.90th=[109577], 99.95th=[114820], | 99.99th=[114820] bw ( KiB/s): min= 47, max= 191, per=25.61%, avg=108.82, stdev=30.83, samples=114 iops : min= 11, max= 47, avg=26.74, stdev= 7.74, samples=114 lat (usec) : 50=0.10%, 100=1.14%, 250=1.50%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=2.44%, 4=6.15%, 10=16.18%, 20=34.77%, 50=34.60% lat (msec) : 100=2.64%, 250=0.13%, 2000=0.03% cpu : usr=0.15%, sys=21.30%, ctx=8847, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151727: Tue Aug 18 21:38:19 2026 read: IOPS=25, BW=101KiB/s (103kB/s)(5940KiB/58910msec) clat (usec): min=44, max=113214, avg=20366.49, stdev=12636.55 lat (usec): min=45, max=113214, avg=20367.49, stdev=12636.55 clat percentiles (usec): | 1.00th=[ 84], 5.00th=[ 5014], 10.00th=[ 8586], 20.00th=[ 11076], | 30.00th=[ 13304], 40.00th=[ 15401], 50.00th=[ 17695], 60.00th=[ 20841], | 70.00th=[ 23725], 80.00th=[ 28443], 90.00th=[ 35914], 95.00th=[ 41157], | 99.00th=[ 64226], 99.50th=[ 73925], 99.90th=[ 99091], 99.95th=[112722], | 99.99th=[112722] bw ( KiB/s): min= 6, max= 174, per=25.00%, avg=101.50, stdev=28.66, samples=116 iops : min= 1, max= 43, avg=24.90, stdev= 7.25, samples=116 write: IOPS=26, BW=108KiB/s (110kB/s)(6348KiB/58910msec); 0 zone resets clat (usec): min=714, max=959681, avg=17857.89, stdev=27868.93 lat (usec): min=714, max=959682, avg=17860.53, stdev=27868.66 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 2245], 10.00th=[ 2933], 20.00th=[ 4359], | 30.00th=[ 6456], 40.00th=[ 10028], 50.00th=[ 13829], 60.00th=[ 17433], | 70.00th=[ 21890], 80.00th=[ 28181], 90.00th=[ 36963], 95.00th=[ 44303], | 99.00th=[ 67634], 99.50th=[ 83362], 99.90th=[121111], 99.95th=[960496], | 99.99th=[960496] bw ( KiB/s): min= 20, max= 183, per=25.51%, avg=108.40, stdev=31.14, samples=116 iops : min= 5, max= 45, avg=26.64, stdev= 7.77, samples=116 lat (usec) : 50=0.10%, 100=0.62%, 250=1.43%, 500=0.20%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=2.08%, 4=6.71%, 10=16.57%, 20=33.89%, 50=35.48% lat (msec) : 100=2.60%, 250=0.10%, 1000=0.03% cpu : usr=0.13%, sys=21.40%, ctx=8800, 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=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=151728: Tue Aug 18 21:38:19 2026 read: IOPS=25, BW=102KiB/s (105kB/s)(6028KiB/59035msec) clat (usec): min=37, max=1058.2k, avg=20241.89, stdev=29509.37 lat (usec): min=38, max=1058.2k, avg=20243.34, stdev=29509.34 clat percentiles (usec): | 1.00th=[ 81], 5.00th=[ 4490], 10.00th=[ 8455], | 20.00th=[ 10814], 30.00th=[ 12911], 40.00th=[ 14615], | 50.00th=[ 16909], 60.00th=[ 19530], 70.00th=[ 22938], | 80.00th=[ 27132], 90.00th=[ 33424], 95.00th=[ 41157], | 99.00th=[ 64226], 99.50th=[ 86508], 99.90th=[ 111674], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 6, max= 176, per=25.28%, avg=102.66, stdev=28.41, samples=116 iops : min= 1, max= 44, avg=25.19, stdev= 7.12, samples=116 write: IOPS=26, BW=106KiB/s (109kB/s)(6260KiB/59035msec); 0 zone resets clat (usec): min=790, max=112295, avg=18040.44, stdev=14716.19 lat (usec): min=791, max=112297, avg=18045.98, stdev=14715.30 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 2040], 10.00th=[ 2900], 20.00th=[ 4293], | 30.00th=[ 7635], 40.00th=[ 11731], 50.00th=[ 15270], 60.00th=[ 18482], | 70.00th=[ 22938], 80.00th=[ 29492], 90.00th=[ 36963], 95.00th=[ 44827], | 99.00th=[ 66323], 99.50th=[ 76022], 99.90th=[111674], 99.95th=[112722], | 99.99th=[112722] bw ( KiB/s): min= 20, max= 192, per=25.01%, avg=106.28, stdev=30.29, samples=116 iops : min= 5, max= 48, avg=26.10, stdev= 7.57, samples=116 lat (usec) : 50=0.13%, 100=0.59%, 250=1.56%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.20% lat (msec) : 2=2.21%, 4=7.10%, 10=13.93%, 20=36.13%, 50=35.25% lat (msec) : 100=2.57%, 250=0.13%, 2000=0.03% cpu : usr=0.14%, sys=21.37%, ctx=8916, 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=151729: Tue Aug 18 21:38:19 2026 read: IOPS=25, BW=102KiB/s (105kB/s)(6052KiB/59136msec) clat (usec): min=33, max=953482, avg=20437.00, stdev=26942.97 lat (usec): min=34, max=953484, avg=20438.07, stdev=26943.03 clat percentiles (usec): | 1.00th=[ 69], 5.00th=[ 3589], 10.00th=[ 8717], 20.00th=[ 11338], | 30.00th=[ 13304], 40.00th=[ 15401], 50.00th=[ 17695], 60.00th=[ 20055], | 70.00th=[ 23200], 80.00th=[ 27395], 90.00th=[ 33162], 95.00th=[ 40109], | 99.00th=[ 64750], 99.50th=[ 81265], 99.90th=[115868], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 6, max= 176, per=25.23%, avg=102.43, stdev=28.53, samples=116 iops : min= 1, max= 44, avg=25.14, stdev= 7.13, samples=116 write: IOPS=26, BW=105KiB/s (108kB/s)(6236KiB/59136msec); 0 zone resets clat (usec): min=846, max=112810, avg=17906.80, stdev=14950.49 lat (usec): min=846, max=112812, avg=17918.45, stdev=14958.66 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 2114], 10.00th=[ 2999], 20.00th=[ 4555], | 30.00th=[ 7308], 40.00th=[ 11338], 50.00th=[ 14222], 60.00th=[ 18220], | 70.00th=[ 22676], 80.00th=[ 28443], 90.00th=[ 38536], 95.00th=[ 47449], | 99.00th=[ 66847], 99.50th=[ 76022], 99.90th=[ 99091], 99.95th=[112722], | 99.99th=[112722] bw ( KiB/s): min= 27, max= 166, per=24.89%, avg=105.80, stdev=27.96, samples=116 iops : min= 6, max= 41, avg=25.97, stdev= 7.03, samples=116 lat (usec) : 50=0.20%, 100=0.81%, 250=1.24%, 500=0.16%, 1000=0.16% lat (msec) : 2=2.05%, 4=6.64%, 10=14.13%, 20=36.26%, 50=35.06% lat (msec) : 100=3.19%, 250=0.07%, 1000=0.03% cpu : usr=0.14%, sys=21.52%, ctx=8808, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=406KiB/s (416kB/s), 101KiB/s-102KiB/s (103kB/s-105kB/s), io=23.4MiB (24.6MB), run=58782-59136msec WRITE: bw=425KiB/s (435kB/s), 105KiB/s-108KiB/s (108kB/s-110kB/s), io=24.6MiB (25.7MB), run=58782-59136msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151731: Tue Aug 18 21:38:54 2026 read: IOPS=15, BW=63.5KiB/s (64.0kB/s)(5992KiB/94432msec) clat (msec): min=3, max=1064, avg=17.41, stdev=30.97 lat (msec): min=3, max=1064, avg=17.41, stdev=30.97 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 12], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 34], 95.00th=[ 46], | 99.00th=[ 81], 99.50th=[ 104], 99.90th=[ 153], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 176, per=25.36%, avg=64.17, stdev=36.36, samples=185 iops : min= 1, max= 44, avg=15.71, stdev= 9.16, samples=185 write: IOPS=16, BW=66.7KiB/s (68.3kB/s)(6296KiB/94432msec); 0 zone resets clat (msec): min=15, max=204, avg=43.38, stdev=22.30 lat (msec): min=15, max=204, avg=43.39, stdev=22.30 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 30], 40.00th=[ 33], 50.00th=[ 37], 60.00th=[ 42], | 70.00th=[ 50], 80.00th=[ 59], 90.00th=[ 72], 95.00th=[ 87], | 99.00th=[ 125], 99.50th=[ 144], 99.90th=[ 180], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 15, max= 128, per=25.30%, avg=67.05, stdev=29.60, samples=186 iops : min= 3, max= 32, avg=16.44, stdev= 7.48, samples=186 lat (msec) : 4=0.42%, 10=18.10%, 20=20.70%, 50=44.04%, 100=15.14% lat (msec) : 250=1.56%, 2000=0.03% cpu : usr=0.12%, sys=6.97%, ctx=6148, 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=151733: Tue Aug 18 21:38:54 2026 read: IOPS=15, BW=62.8KiB/s (64.3kB/s)(5940KiB/94574msec) clat (msec): min=3, max=978, avg=17.88, stdev=29.46 lat (msec): min=3, max=978, avg=17.88, stdev=29.46 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 36], 95.00th=[ 50], | 99.00th=[ 75], 99.50th=[ 96], 99.90th=[ 176], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 176, per=24.82%, avg=62.80, stdev=36.97, samples=187 iops : min= 1, max= 44, avg=15.37, stdev= 9.33, samples=187 write: IOPS=16, BW=67.1KiB/s (68.7kB/s)(6348KiB/94574msec); 0 zone resets clat (msec): min=14, max=188, avg=42.81, stdev=21.03 lat (msec): min=14, max=188, avg=42.81, stdev=21.03 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 29], 40.00th=[ 32], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 49], 80.00th=[ 58], 90.00th=[ 72], 95.00th=[ 84], | 99.00th=[ 110], 99.50th=[ 121], 99.90th=[ 176], 99.95th=[ 188], | 99.99th=[ 188] bw ( KiB/s): min= 15, max= 143, per=25.41%, avg=67.34, stdev=29.31, samples=186 iops : min= 3, max= 35, avg=16.51, stdev= 7.41, samples=186 lat (msec) : 4=0.42%, 10=18.33%, 20=19.11%, 50=45.15%, 100=15.63% lat (msec) : 250=1.33%, 1000=0.03% cpu : usr=0.10%, sys=7.06%, ctx=6239, 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=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=151734: Tue Aug 18 21:38:54 2026 read: IOPS=16, BW=64.1KiB/s (65.6kB/s)(6028KiB/94100msec) clat (msec): min=2, max=134, avg=16.88, stdev=14.35 lat (msec): min=2, max=134, avg=16.89, stdev=14.35 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 34], 95.00th=[ 47], | 99.00th=[ 70], 99.50th=[ 82], 99.90th=[ 131], 99.95th=[ 136], | 99.99th=[ 136] bw ( KiB/s): min= 7, max= 168, per=25.48%, avg=64.48, stdev=35.79, samples=185 iops : min= 1, max= 42, avg=15.79, stdev= 9.04, samples=185 write: IOPS=16, BW=66.5KiB/s (68.1kB/s)(6260KiB/94100msec); 0 zone resets clat (msec): min=14, max=1002, avg=43.82, stdev=32.91 lat (msec): min=14, max=1002, avg=43.83, stdev=32.91 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 30], 40.00th=[ 33], 50.00th=[ 37], 60.00th=[ 43], | 70.00th=[ 49], 80.00th=[ 57], 90.00th=[ 70], 95.00th=[ 89], | 99.00th=[ 126], 99.50th=[ 153], 99.90th=[ 190], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 16, max= 135, per=25.21%, avg=66.81, stdev=29.17, samples=185 iops : min= 4, max= 33, avg=16.38, stdev= 7.36, samples=185 lat (msec) : 4=0.42%, 10=17.58%, 20=20.08%, 50=45.90%, 100=14.29% lat (msec) : 250=1.69%, 2000=0.03% cpu : usr=0.09%, sys=7.17%, ctx=6144, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151735: Tue Aug 18 21:38:54 2026 read: IOPS=16, BW=64.1KiB/s (65.6kB/s)(6052KiB/94462msec) clat (msec): min=3, max=152, avg=17.28, stdev=15.68 lat (msec): min=3, max=152, avg=17.28, stdev=15.68 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 12], 60.00th=[ 15], | 70.00th=[ 18], 80.00th=[ 24], 90.00th=[ 36], 95.00th=[ 49], | 99.00th=[ 78], 99.50th=[ 97], 99.90th=[ 136], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 7, max= 192, per=25.46%, avg=64.42, stdev=35.46, samples=186 iops : min= 1, max= 48, avg=15.78, stdev= 8.95, samples=186 write: IOPS=16, BW=66.0KiB/s (67.6kB/s)(6236KiB/94462msec); 0 zone resets clat (msec): min=15, max=1021, avg=43.77, stdev=32.93 lat (msec): min=15, max=1021, avg=43.77, stdev=32.93 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 26], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 38], 60.00th=[ 43], | 70.00th=[ 50], 80.00th=[ 59], 90.00th=[ 71], 95.00th=[ 86], | 99.00th=[ 120], 99.50th=[ 138], 99.90th=[ 201], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 16, max= 136, per=25.04%, avg=66.36, stdev=29.55, samples=186 iops : min= 4, max= 34, avg=16.26, stdev= 7.47, samples=186 lat (msec) : 4=0.49%, 10=18.59%, 20=19.66%, 50=44.21%, 100=15.56% lat (msec) : 250=1.46%, 2000=0.03% cpu : usr=0.09%, sys=6.99%, ctx=6150, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=254KiB/s (260kB/s), 62.8KiB/s-64.1KiB/s (64.3kB/s-65.6kB/s), io=23.4MiB (24.6MB), run=94100-94574msec WRITE: bw=266KiB/s (272kB/s), 66.0KiB/s-67.1KiB/s (67.6kB/s-68.7kB/s), io=24.6MiB (25.7MB), run=94100-94574msec 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=151765: Tue Aug 18 21:39:13 2026 read: IOPS=29, BW=474KiB/s (485kB/s)(5920KiB/12496msec) clat (usec): min=44, max=81257, avg=16999.70, stdev=11648.77 lat (usec): min=45, max=81259, avg=17016.63, stdev=11649.93 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 88], 10.00th=[ 113], 20.00th=[ 9110], | 30.00th=[11731], 40.00th=[13304], 50.00th=[16057], 60.00th=[18220], | 70.00th=[20579], 80.00th=[24511], 90.00th=[30540], 95.00th=[39060], | 99.00th=[54789], 99.50th=[64226], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 285, max= 672, per=25.53%, avg=469.92, stdev=102.27, samples=24 iops : min= 17, max= 42, avg=28.83, stdev= 6.53, samples=24 write: IOPS=31, BW=510KiB/s (522kB/s)(6368KiB/12496msec); 0 zone resets clat (usec): min=1055, max=73862, avg=15462.13, stdev=12804.46 lat (usec): min=1056, max=73864, avg=15474.13, stdev=12817.76 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 2606], 10.00th=[ 3425], 20.00th=[ 4555], | 30.00th=[ 5604], 40.00th=[ 8225], 50.00th=[11207], 60.00th=[15139], | 70.00th=[19530], 80.00th=[26084], 90.00th=[34341], 95.00th=[40109], | 99.00th=[53740], 99.50th=[69731], 99.90th=[73925], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 351, max= 734, per=26.28%, avg=509.00, stdev=105.50, samples=24 iops : min= 21, max= 45, avg=31.25, stdev= 6.58, samples=24 lat (usec) : 50=0.26%, 100=2.99%, 250=3.26%, 500=0.26% lat (msec) : 2=1.43%, 4=6.64%, 10=20.18%, 20=34.24%, 50=29.17% lat (msec) : 100=1.56% cpu : usr=0.24%, sys=24.16%, ctx=2286, 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=151766: Tue Aug 18 21:39:13 2026 read: IOPS=27, BW=442KiB/s (452kB/s)(5744KiB/13008msec) clat (usec): min=42, max=98710, avg=18326.67, stdev=11916.32 lat (usec): min=43, max=98710, avg=18327.59, stdev=11916.32 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 90], 10.00th=[ 130], 20.00th=[10552], | 30.00th=[12649], 40.00th=[15139], 50.00th=[17171], 60.00th=[20055], | 70.00th=[22414], 80.00th=[26346], 90.00th=[31327], 95.00th=[38536], | 99.00th=[50070], 99.50th=[72877], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 256, max= 670, per=23.86%, avg=439.28, stdev=113.25, samples=25 iops : min= 16, max= 41, avg=26.92, stdev= 6.97, samples=25 write: IOPS=31, BW=503KiB/s (515kB/s)(6544KiB/13008msec); 0 zone resets clat (usec): min=1179, max=91037, avg=15557.67, stdev=13953.67 lat (usec): min=1180, max=91038, avg=15559.25, stdev=13953.64 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 2180], 10.00th=[ 3359], 20.00th=[ 4359], | 30.00th=[ 5407], 40.00th=[ 8717], 50.00th=[11863], 60.00th=[14877], | 70.00th=[19268], 80.00th=[25035], 90.00th=[32637], 95.00th=[41157], | 99.00th=[62653], 99.50th=[73925], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 352, max= 704, per=25.47%, avg=493.28, stdev=106.03, samples=25 iops : min= 22, max= 44, avg=30.32, stdev= 6.71, samples=25 lat (usec) : 50=0.39%, 100=2.47%, 250=2.60%, 1000=0.13% lat (msec) : 2=2.08%, 4=5.86%, 10=18.10%, 20=33.98%, 50=32.55% lat (msec) : 100=1.82% cpu : usr=0.13%, sys=24.03%, ctx=2219, 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=151767: Tue Aug 18 21:39:13 2026 read: IOPS=30, BW=483KiB/s (494kB/s)(6256KiB/12964msec) clat (usec): min=51, max=66567, avg=17717.42, stdev=12090.76 lat (usec): min=51, max=66568, avg=17718.36, stdev=12090.76 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 83], 10.00th=[ 113], 20.00th=[ 9372], | 30.00th=[12256], 40.00th=[14615], 50.00th=[16909], 60.00th=[19530], | 70.00th=[22152], 80.00th=[26084], 90.00th=[32637], 95.00th=[39584], | 99.00th=[51119], 99.50th=[63177], 99.90th=[66323], 99.95th=[66323], | 99.99th=[66323] bw ( KiB/s): min= 287, max= 608, per=26.17%, avg=481.72, stdev=81.26, samples=25 iops : min= 17, max= 38, avg=29.60, stdev= 5.23, samples=25 write: IOPS=29, BW=465KiB/s (476kB/s)(6032KiB/12964msec); 0 zone resets clat (usec): min=1576, max=72514, avg=15838.09, stdev=11826.58 lat (usec): min=1578, max=72515, avg=15840.35, stdev=11826.58 clat percentiles (usec): | 1.00th=[ 2147], 5.00th=[ 3064], 10.00th=[ 4047], 20.00th=[ 5473], | 30.00th=[ 7701], 40.00th=[10421], 50.00th=[12911], 60.00th=[15270], | 70.00th=[18482], 80.00th=[25035], 90.00th=[32637], 95.00th=[38536], | 99.00th=[55837], 99.50th=[58459], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 223, max= 670, per=23.57%, avg=456.48, stdev=131.71, samples=25 iops : min= 13, max= 41, avg=28.00, stdev= 8.37, samples=25 lat (usec) : 100=4.04%, 250=4.56%, 500=0.13%, 750=0.13% lat (msec) : 2=0.39%, 4=4.17%, 10=16.02%, 20=37.24%, 50=32.16% lat (msec) : 100=1.17% cpu : usr=0.14%, sys=23.83%, ctx=2287, 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=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=151768: Tue Aug 18 21:39:13 2026 read: IOPS=29, BW=471KiB/s (482kB/s)(6032KiB/12816msec) clat (usec): min=40, max=82399, avg=17693.60, stdev=11960.26 lat (usec): min=40, max=82401, avg=17696.13, stdev=11960.36 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 83], 10.00th=[ 112], 20.00th=[ 9896], | 30.00th=[12780], 40.00th=[14877], 50.00th=[16712], 60.00th=[19268], | 70.00th=[21890], 80.00th=[25822], 90.00th=[30278], 95.00th=[35390], | 99.00th=[62129], 99.50th=[76022], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 252, max= 638, per=25.43%, avg=468.16, stdev=101.22, samples=25 iops : min= 15, max= 39, avg=28.72, stdev= 6.49, samples=25 write: IOPS=30, BW=488KiB/s (500kB/s)(6256KiB/12816msec); 0 zone resets clat (usec): min=1249, max=72468, avg=15525.89, stdev=13311.05 lat (usec): min=1249, max=72469, avg=15527.65, stdev=13311.07 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 2638], 10.00th=[ 3458], 20.00th=[ 4490], | 30.00th=[ 5735], 40.00th=[ 7963], 50.00th=[11338], 60.00th=[14877], | 70.00th=[19530], 80.00th=[24773], 90.00th=[33817], 95.00th=[42730], | 99.00th=[68682], 99.50th=[71828], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 284, max= 764, per=25.18%, avg=487.80, stdev=107.32, samples=25 iops : min= 17, max= 47, avg=29.96, stdev= 6.62, samples=25 lat (usec) : 50=0.52%, 100=3.39%, 250=3.39%, 500=0.13% lat (msec) : 2=1.04%, 4=6.90%, 10=18.62%, 20=32.94%, 50=30.99% lat (msec) : 100=2.08% cpu : usr=0.12%, sys=24.00%, ctx=2276, 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=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=1841KiB/s (1886kB/s), 442KiB/s-483KiB/s (452kB/s-494kB/s), io=23.4MiB (24.5MB), run=12496-13008msec WRITE: bw=1937KiB/s (1984kB/s), 465KiB/s-510KiB/s (476kB/s-522kB/s), io=24.6MiB (25.8MB), run=12496-13008msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151770: Tue Aug 18 21:39:22 2026 read: IOPS=16, BW=269KiB/s (275kB/s)(5920KiB/22006msec) clat (usec): min=3961, max=84081, avg=17145.45, stdev=15543.58 lat (usec): min=3962, max=84081, avg=17146.55, stdev=15543.59 clat percentiles (usec): | 1.00th=[ 4490], 5.00th=[ 5211], 10.00th=[ 5669], 20.00th=[ 6783], | 30.00th=[ 7963], 40.00th=[ 9110], 50.00th=[10421], 60.00th=[13435], | 70.00th=[17433], 80.00th=[23725], 90.00th=[39060], 95.00th=[56886], | 99.00th=[79168], 99.50th=[81265], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 31, max= 608, per=24.46%, avg=264.70, stdev=137.63, samples=43 iops : min= 1, max= 38, avg=16.14, stdev= 8.77, samples=43 write: IOPS=18, BW=289KiB/s (296kB/s)(6368KiB/22006msec); 0 zone resets clat (msec): min=14, max=125, avg=39.25, stdev=19.97 lat (msec): min=14, max=125, avg=39.25, stdev=19.97 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 30], 50.00th=[ 32], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 54], 90.00th=[ 70], 95.00th=[ 84], | 99.00th=[ 104], 99.50th=[ 118], 99.90th=[ 127], 99.95th=[ 127], | 99.99th=[ 127] bw ( KiB/s): min= 96, max= 576, per=25.29%, avg=288.05, stdev=143.05, samples=43 iops : min= 6, max= 36, avg=17.60, stdev= 9.07, samples=43 lat (msec) : 4=0.13%, 10=22.92%, 20=15.89%, 50=46.09%, 100=14.32% lat (msec) : 250=0.65% cpu : usr=0.09%, sys=7.53%, ctx=1541, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151771: Tue Aug 18 21:39:22 2026 read: IOPS=16, BW=260KiB/s (266kB/s)(5744KiB/22117msec) clat (msec): min=3, max=128, avg=16.04, stdev=16.82 lat (msec): min=3, max=128, avg=16.04, stdev=16.82 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 13], | 70.00th=[ 16], 80.00th=[ 23], 90.00th=[ 36], 95.00th=[ 52], | 99.00th=[ 94], 99.50th=[ 124], 99.90th=[ 129], 99.95th=[ 129], | 99.99th=[ 129] bw ( KiB/s): min= 52, max= 576, per=24.55%, avg=265.62, stdev=159.56, samples=42 iops : min= 3, max= 36, avg=16.19, stdev=10.13, samples=42 write: IOPS=18, BW=296KiB/s (303kB/s)(6544KiB/22117msec); 0 zone resets clat (msec): min=13, max=151, avg=39.78, stdev=21.35 lat (msec): min=13, max=151, avg=39.79, stdev=21.35 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 21], 20.00th=[ 24], | 30.00th=[ 26], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 55], 90.00th=[ 70], 95.00th=[ 85], | 99.00th=[ 113], 99.50th=[ 115], 99.90th=[ 153], 99.95th=[ 153], | 99.99th=[ 153] bw ( KiB/s): min= 94, max= 576, per=25.45%, avg=289.88, stdev=139.59, samples=43 iops : min= 5, max= 36, avg=17.72, stdev= 8.89, samples=43 lat (msec) : 4=0.78%, 10=23.18%, 20=15.76%, 50=45.05%, 100=13.54% lat (msec) : 250=1.69% cpu : usr=0.09%, sys=7.10%, ctx=1542, 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=151772: Tue Aug 18 21:39:22 2026 read: IOPS=17, BW=288KiB/s (295kB/s)(6256KiB/21742msec) clat (msec): min=3, max=134, avg=16.94, stdev=17.47 lat (msec): min=3, max=134, avg=16.94, stdev=17.47 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 36], 95.00th=[ 50], | 99.00th=[ 99], 99.50th=[ 126], 99.90th=[ 134], 99.95th=[ 134], | 99.99th=[ 134] bw ( KiB/s): min= 63, max= 896, per=26.74%, avg=289.28, stdev=182.79, samples=43 iops : min= 3, max= 56, avg=17.67, stdev=11.58, samples=43 write: IOPS=17, BW=277KiB/s (284kB/s)(6032KiB/21742msec); 0 zone resets clat (msec): min=16, max=113, avg=39.79, stdev=19.65 lat (msec): min=16, max=113, avg=39.80, stdev=19.65 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 30], 50.00th=[ 33], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 54], 90.00th=[ 66], 95.00th=[ 85], | 99.00th=[ 109], 99.50th=[ 113], 99.90th=[ 114], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 96, max= 544, per=24.36%, avg=277.47, stdev=135.57, samples=43 iops : min= 6, max= 34, avg=16.93, stdev= 8.63, samples=43 lat (msec) : 4=0.65%, 10=22.53%, 20=18.75%, 50=43.49%, 100=13.15% lat (msec) : 250=1.43% cpu : usr=0.07%, sys=7.59%, ctx=1613, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151773: Tue Aug 18 21:39:22 2026 read: IOPS=17, BW=273KiB/s (280kB/s)(6032KiB/22071msec) clat (msec): min=3, max=108, avg=17.14, stdev=16.83 lat (msec): min=3, max=108, avg=17.14, stdev=16.83 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 14], | 70.00th=[ 17], 80.00th=[ 24], 90.00th=[ 38], 95.00th=[ 55], | 99.00th=[ 90], 99.50th=[ 107], 99.90th=[ 109], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 63, max= 608, per=24.71%, avg=267.33, stdev=141.78, samples=43 iops : min= 3, max= 38, avg=16.30, stdev= 9.05, samples=43 write: IOPS=17, BW=283KiB/s (290kB/s)(6256KiB/22071msec); 0 zone resets clat (msec): min=15, max=114, avg=39.71, stdev=21.09 lat (msec): min=15, max=114, avg=39.71, stdev=21.09 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 20], 10.00th=[ 22], 20.00th=[ 24], | 30.00th=[ 27], 40.00th=[ 29], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 45], 80.00th=[ 57], 90.00th=[ 71], 95.00th=[ 83], | 99.00th=[ 110], 99.50th=[ 112], 99.90th=[ 115], 99.95th=[ 115], | 99.99th=[ 115] bw ( KiB/s): min= 96, max= 544, per=24.69%, avg=281.21, stdev=146.44, samples=43 iops : min= 6, max= 34, avg=17.16, stdev= 9.31, samples=43 lat (msec) : 4=0.65%, 10=22.27%, 20=17.58%, 50=44.40%, 100=13.41% lat (msec) : 250=1.69% cpu : usr=0.12%, sys=7.37%, ctx=1628, 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=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=1083KiB/s (1109kB/s), 260KiB/s-288KiB/s (266kB/s-295kB/s), io=23.4MiB (24.5MB), run=21742-22117msec WRITE: bw=1139KiB/s (1167kB/s), 277KiB/s-296KiB/s (284kB/s-303kB/s), io=24.6MiB (25.8MB), run=21742-22117msec 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=151781: Tue Aug 18 21:39:30 2026 read: IOPS=3, BW=3889KiB/s (3983kB/s)(7168KiB/1843msec) clat (msec): min=61, max=444, avg=178.71, stdev=146.67 lat (msec): min=61, max=444, avg=178.71, stdev=146.67 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 84], | 30.00th=[ 96], 40.00th=[ 96], 50.00th=[ 97], 60.00th=[ 144], | 70.00th=[ 144], 80.00th=[ 326], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 1924, max= 5052, per=55.93%, avg=3666.33, stdev=1594.21, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2778KiB/s (2845kB/s)(5120KiB/1843msec); 0 zone resets clat (msec): min=78, max=160, avg=110.87, stdev=37.69 lat (msec): min=78, max=160, avg=110.92, stdev=37.70 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 80], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 94], 60.00th=[ 94], | 70.00th=[ 142], 80.00th=[ 142], 90.00th=[ 161], 95.00th=[ 161], | 99.00th=[ 161], 99.50th=[ 161], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 3849, max= 6035, per=53.85%, avg=4942.00, stdev=1545.74, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 lat (msec) : 100=58.33%, 250=25.00%, 500=16.67% cpu : usr=0.00%, sys=16.72%, ctx=83, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151782: Tue Aug 18 21:39:30 2026 read: IOPS=0, BW=656KiB/s (671kB/s)(2048KiB/3124msec) clat (msec): min=79, max=120, avg=99.91, stdev=29.17 lat (msec): min=79, max=120, avg=99.91, stdev=29.17 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 80], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 80], 60.00th=[ 121], | 70.00th=[ 121], 80.00th=[ 121], 90.00th=[ 121], 95.00th=[ 121], | 99.00th=[ 121], 99.50th=[ 121], 99.90th=[ 121], 99.95th=[ 121], | 99.99th=[ 121] bw ( KiB/s): min= 1686, max= 2039, per=28.41%, avg=1862.50, stdev=249.61, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3278KiB/s (3357kB/s)(10.0MiB/3124msec); 0 zone resets clat (msec): min=38, max=801, avg=287.95, stdev=260.84 lat (msec): min=38, max=801, avg=288.01, stdev=260.85 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 39], 10.00th=[ 39], 20.00th=[ 97], | 30.00th=[ 102], 40.00th=[ 108], 50.00th=[ 123], 60.00th=[ 239], | 70.00th=[ 305], 80.00th=[ 418], 90.00th=[ 659], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 1686, max= 4023, per=26.35%, avg=2418.00, stdev=1080.05, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 50=8.33%, 100=16.67%, 250=41.67%, 500=16.67%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.00%, sys=20.62%, ctx=143, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151783: Tue Aug 18 21:39:30 2026 read: IOPS=2, BW=2368KiB/s (2424kB/s)(6144KiB/2595msec) clat (msec): min=67, max=376, avg=204.05, stdev=137.22 lat (msec): min=67, max=376, avg=204.05, stdev=137.22 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 85], | 30.00th=[ 85], 40.00th=[ 114], 50.00th=[ 114], 60.00th=[ 226], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 1924, max= 6119, per=51.13%, avg=3351.33, stdev=2397.26, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=2, BW=2368KiB/s (2424kB/s)(6144KiB/2595msec); 0 zone resets clat (msec): min=78, max=544, avg=223.92, stdev=168.63 lat (msec): min=78, max=544, avg=223.97, stdev=168.62 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 115], | 30.00th=[ 115], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 218], | 70.00th=[ 243], 80.00th=[ 243], 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= 1924, max= 3373, per=25.46%, avg=2336.75, stdev=692.57, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=25.00%, 250=50.00%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=13.26%, ctx=76, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=151784: Tue Aug 18 21:39:30 2026 read: IOPS=2, BW=2270KiB/s (2324kB/s)(5120KiB/2256msec) clat (msec): min=95, max=468, avg=211.19, stdev=147.14 lat (msec): min=95, max=468, avg=211.19, stdev=147.14 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 159], 60.00th=[ 159], | 70.00th=[ 184], 80.00th=[ 184], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 3849, max= 4023, per=60.05%, avg=3936.00, stdev=123.04, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3177KiB/s (3254kB/s)(7168KiB/2256msec); 0 zone resets clat (msec): min=59, max=273, avg=169.47, stdev=79.94 lat (msec): min=59, max=273, avg=169.54, stdev=79.95 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 60], 10.00th=[ 60], 20.00th=[ 80], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 184], 60.00th=[ 218], | 70.00th=[ 218], 80.00th=[ 232], 90.00th=[ 275], 95.00th=[ 275], | 99.00th=[ 275], 99.50th=[ 275], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 6119, max= 6747, per=70.10%, avg=6433.00, stdev=444.06, samples=2 iops : min= 5, max= 6, avg= 5.50, stdev= 0.71, samples=2 lat (msec) : 100=25.00%, 250=58.33%, 500=16.67% cpu : usr=0.13%, sys=12.68%, ctx=162, 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=6556KiB/s (6713kB/s), 656KiB/s-3889KiB/s (671kB/s-3983kB/s), io=20.0MiB (20.0MB), run=1843-3124msec WRITE: bw=9178KiB/s (9398kB/s), 2368KiB/s-3278KiB/s (2424kB/s-3357kB/s), io=28.0MiB (29.4MB), run=1843-3124msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151786: Tue Aug 18 21:39:31 2026 read: IOPS=3, BW=3328KiB/s (3408kB/s)(7168KiB/2154msec) clat (usec): min=494, max=296205, avg=149309.47, stdev=86228.65 lat (usec): min=495, max=296206, avg=149310.78, stdev=86228.65 clat percentiles (usec): | 1.00th=[ 494], 5.00th=[ 494], 10.00th=[ 494], 20.00th=[128451], | 30.00th=[141558], 40.00th=[141558], 50.00th=[154141], 60.00th=[162530], | 70.00th=[162530], 80.00th=[162530], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 1969, max= 4087, per=42.49%, avg=2925.75, stdev=1100.19, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=2, BW=2377KiB/s (2434kB/s)(5120KiB/2154msec); 0 zone resets clat (msec): min=148, max=362, avg=211.57, stdev=86.31 lat (msec): min=148, max=362, avg=211.63, stdev=86.30 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 190], 60.00th=[ 190], | 70.00th=[ 194], 80.00th=[ 194], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1969, max= 4007, per=27.73%, avg=2673.00, stdev=1155.87, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=75.00%, 500=16.67% cpu : usr=0.05%, sys=50.58%, ctx=797, 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=151787: Tue Aug 18 21:39:31 2026 read: IOPS=0, BW=714KiB/s (731kB/s)(2048KiB/2869msec) clat (msec): min=129, max=183, avg=156.26, stdev=38.48 lat (msec): min=129, max=183, avg=156.27, stdev=38.47 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 130], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 130], 60.00th=[ 184], | 70.00th=[ 184], 80.00th=[ 184], 90.00th=[ 184], 95.00th=[ 184], | 99.00th=[ 184], 99.50th=[ 184], 99.90th=[ 184], 99.95th=[ 184], | 99.99th=[ 184] bw ( KiB/s): min= 1703, max= 1969, per=26.66%, avg=1836.00, stdev=188.09, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3569KiB/s (3655kB/s)(10.0MiB/2869msec); 0 zone resets clat (msec): min=88, max=460, avg=253.44, stdev=146.32 lat (msec): min=88, max=460, avg=253.51, stdev=146.32 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 93], | 30.00th=[ 132], 40.00th=[ 161], 50.00th=[ 213], 60.00th=[ 222], | 70.00th=[ 288], 80.00th=[ 418], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 1703, max= 6144, per=33.00%, avg=3181.20, stdev=1913.20, samples=5 iops : min= 1, max= 6, avg= 2.40, stdev= 2.19, samples=5 lat (msec) : 100=16.67%, 250=50.00%, 500=33.33% cpu : usr=0.03%, sys=38.11%, ctx=182, 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=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=151788: Tue Aug 18 21:39:31 2026 read: IOPS=2, BW=2066KiB/s (2115kB/s)(6144KiB/2974msec) clat (usec): min=479, max=381774, avg=159777.14, stdev=162898.34 lat (usec): min=480, max=381775, avg=159778.12, stdev=162898.19 clat percentiles (usec): | 1.00th=[ 482], 5.00th=[ 482], 10.00th=[ 482], 20.00th=[ 553], | 30.00th=[ 553], 40.00th=[ 88605], 50.00th=[ 88605], 60.00th=[160433], | 70.00th=[325059], 80.00th=[325059], 90.00th=[383779], 95.00th=[383779], | 99.00th=[383779], 99.50th=[383779], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 1969, max= 4096, per=39.06%, avg=2689.33, stdev=1218.33, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=2, BW=2066KiB/s (2115kB/s)(6144KiB/2974msec); 0 zone resets clat (msec): min=136, max=909, avg=327.70, stdev=296.60 lat (msec): min=136, max=910, avg=327.76, stdev=296.61 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 176], 50.00th=[ 176], 60.00th=[ 249], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1969, max= 3549, per=24.82%, avg=2392.25, stdev=771.85, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 1000=8.33% cpu : usr=0.03%, sys=32.93%, ctx=792, 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=151789: Tue Aug 18 21:39:31 2026 read: IOPS=1, BW=1860KiB/s (1905kB/s)(5120KiB/2752msec) clat (usec): min=587, max=309913, avg=149541.25, stdev=121797.95 lat (usec): min=588, max=309914, avg=149542.17, stdev=121798.15 clat percentiles (usec): | 1.00th=[ 586], 5.00th=[ 586], 10.00th=[ 586], 20.00th=[ 586], | 30.00th=[ 85459], 40.00th=[ 85459], 50.00th=[122160], 60.00th=[122160], | 70.00th=[229639], 80.00th=[229639], 90.00th=[308282], 95.00th=[308282], | 99.00th=[308282], 99.50th=[308282], 99.90th=[308282], 99.95th=[308282], | 99.99th=[308282] bw ( KiB/s): min= 7876, max= 7876, per=100.00%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2605KiB/s (2667kB/s)(7168KiB/2752msec); 0 zone resets clat (msec): min=154, max=665, avg=272.54, stdev=188.63 lat (msec): min=154, max=665, avg=272.60, stdev=188.63 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 159], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 178], 60.00th=[ 232], | 70.00th=[ 232], 80.00th=[ 363], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1738, max= 6144, per=36.13%, avg=3483.00, stdev=2039.13, samples=4 iops : min= 1, max= 6, avg= 2.75, stdev= 2.36, samples=4 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=36.57%, ctx=638, 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=6886KiB/s (7052kB/s), 714KiB/s-3328KiB/s (731kB/s-3408kB/s), io=20.0MiB (20.0MB), run=2154-2974msec WRITE: bw=9641KiB/s (9872kB/s), 2066KiB/s-3569KiB/s (2115kB/s-3655kB/s), io=28.0MiB (29.4MB), run=2154-2974msec 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=151795: Tue Aug 18 21:39:38 2026 read: IOPS=2, BW=8325KiB/s (8525kB/s)(12.0MiB/1476msec) clat (msec): min=399, max=534, avg=475.28, stdev=68.57 lat (msec): min=399, max=534, avg=475.28, stdev=68.57 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 493], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 535], 95.00th=[ 535], | 99.00th=[ 535], 99.50th=[ 535], 99.90th=[ 535], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 7543, max= 7543, per=80.20%, avg=7543.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=58.71%, ctx=1683, 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=151796: Tue Aug 18 21:39:38 2026 read: IOPS=0, BW=2351KiB/s (2408kB/s)(4096KiB/1742msec) clat (nsec): min=490757k, max=490757k, avg=490756996.00, stdev= 0.00 lat (nsec): min=490759k, max=490759k, avg=490759181.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 493], 10.00th=[ 493], 20.00th=[ 493], | 30.00th=[ 493], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 7543, max= 7543, per=80.20%, avg=7543.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4703KiB/s (4816kB/s)(8192KiB/1742msec); 0 zone resets clat (msec): min=421, max=778, avg=600.22, stdev=252.45 lat (msec): min=421, max=778, avg=600.46, stdev=252.47 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 776], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 8192, max= 8192, per=44.18%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=16.89%, ctx=497, 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=151797: Tue Aug 18 21:39:38 2026 write: IOPS=1, BW=6954KiB/s (7121kB/s)(12.0MiB/1767msec); 0 zone resets clat (msec): min=165, max=849, avg=571.23, stdev=359.64 lat (msec): min=165, max=849, avg=571.54, stdev=359.62 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 8192, max= 8192, per=44.18%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=16.14%, ctx=95, 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=151798: Tue Aug 18 21:39:38 2026 write: IOPS=1, BW=7585KiB/s (7767kB/s)(12.0MiB/1620msec); 0 zone resets clat (msec): min=251, max=1034, avg=522.80, stdev=443.62 lat (msec): min=252, max=1035, avg=523.12, stdev=443.61 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 253], 10.00th=[ 253], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 1036], 80.00th=[ 1036], 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= 7529, max= 8192, per=42.39%, avg=7860.50, stdev=468.81, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.06%, sys=19.33%, ctx=65, 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=9405KiB/s (9631kB/s), 2351KiB/s-8325KiB/s (2408kB/s-8525kB/s), io=16.0MiB (16.8MB), run=1476-1742msec WRITE: bw=18.1MiB/s (18.0MB/s), 4703KiB/s-7585KiB/s (4816kB/s-7767kB/s), io=32.0MiB (33.6MB), run=1620-1767msec rand-rw: (groupid=0, jobs=1): err= 0: pid=151800: Tue Aug 18 21:39:39 2026 read: IOPS=1, BW=6978KiB/s (7145kB/s)(12.0MiB/1761msec) clat (msec): min=129, max=929, avg=573.37, stdev=407.11 lat (msec): min=129, max=929, avg=573.37, stdev=407.11 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 130], | 30.00th=[ 130], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 8143, max= 8175, per=88.65%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=10.62%, ctx=177, 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=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=151801: Tue Aug 18 21:39:39 2026 read: IOPS=0, BW=2301KiB/s (2356kB/s)(4096KiB/1780msec) clat (nsec): min=796224k, max=796224k, avg=796224152.00, stdev= 0.00 lat (nsec): min=796227k, max=796227k, avg=796226615.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 793], 80.00th=[ 793], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 8143, max= 8143, per=88.47%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4602KiB/s (4713kB/s)(8192KiB/1780msec); 0 zone resets clat (msec): min=161, max=799, avg=480.54, stdev=451.19 lat (msec): min=161, max=799, avg=480.69, stdev=451.19 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 802], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 8143, max= 8143, per=51.57%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.00%, sys=14.67%, ctx=200, 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=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=151802: Tue Aug 18 21:39:39 2026 write: IOPS=1, BW=5922KiB/s (6064kB/s)(12.0MiB/2075msec); 0 zone resets clat (msec): min=90, max=1192, avg=679.37, stdev=555.29 lat (msec): min=90, max=1193, avg=679.72, stdev=555.36 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 90], | 30.00th=[ 90], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8175, max= 8175, per=51.77%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.05%, sys=10.08%, ctx=47, 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=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=151803: Tue Aug 18 21:39:39 2026 write: IOPS=1, BW=6035KiB/s (6180kB/s)(12.0MiB/2036msec); 0 zone resets clat (msec): min=150, max=1304, avg=673.73, stdev=584.52 lat (msec): min=150, max=1304, avg=674.03, stdev=584.51 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 150], | 30.00th=[ 150], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 8143, max= 8175, per=51.67%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=17.20%, ctx=98, 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=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=9204KiB/s (9425kB/s), 2301KiB/s-6978KiB/s (2356kB/s-7145kB/s), io=16.0MiB (16.8MB), run=1761-1780msec WRITE: bw=15.4MiB/s (16.2MB/s), 4602KiB/s-6035KiB/s (4713kB/s-6180kB/s), io=32.0MiB (33.6MB), run=1780-2075msec