== sanity test 398b: DIO and buffer IO race ============== 09:44:37 (1789134277) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.19512 s, 8.1 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=178823: Fri Sep 11 09:47:27 2026 read: IOPS=10, BW=40.1KiB/s (41.1kB/s)(5992KiB/149285msec) clat (usec): min=43, max=419806, avg=55809.79, stdev=39018.47 lat (usec): min=43, max=419807, avg=55819.82, stdev=39020.10 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 12518], 10.00th=[ 18744], 20.00th=[ 26608], | 30.00th=[ 33162], 40.00th=[ 40109], 50.00th=[ 46924], 60.00th=[ 55313], | 70.00th=[ 67634], 80.00th=[ 80217], 90.00th=[102237], 95.00th=[123208], | 99.00th=[200279], 99.50th=[219153], 99.90th=[316670], 99.95th=[421528], | 99.99th=[421528] bw ( KiB/s): min= 7, max= 117, per=24.78%, avg=39.65, stdev=17.72, samples=292 iops : min= 1, max= 29, avg= 9.26, stdev= 4.48, samples=292 write: IOPS=10, BW=42.2KiB/s (43.2kB/s)(6296KiB/149285msec); 0 zone resets clat (usec): min=741, max=1033.9k, avg=41358.38, stdev=49832.36 lat (usec): min=742, max=1033.9k, avg=41360.18, stdev=49832.40 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1336], | 20.00th=[ 3949], 30.00th=[ 8717], 40.00th=[ 19530], | 50.00th=[ 29230], 60.00th=[ 38536], 70.00th=[ 51119], | 80.00th=[ 69731], 90.00th=[ 101188], 95.00th=[ 131597], | 99.00th=[ 196084], 99.50th=[ 221250], 99.90th=[ 254804], | 99.95th=[1035994], 99.99th=[1035994] bw ( KiB/s): min= 7, max= 159, per=25.16%, avg=42.02, stdev=21.70, samples=290 iops : min= 1, max= 39, avg= 9.86, stdev= 5.50, samples=290 lat (usec) : 50=0.16%, 100=1.27%, 250=0.07%, 750=0.03%, 1000=0.23% lat (msec) : 2=7.36%, 4=2.77%, 10=5.92%, 20=8.59%, 50=35.16% lat (msec) : 100=28.09%, 250=10.16%, 500=0.16%, 2000=0.03% cpu : usr=0.08%, sys=4.55%, ctx=6272, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178825: Fri Sep 11 09:47:27 2026 read: IOPS=10, BW=40.5KiB/s (41.5kB/s)(5940KiB/146704msec) clat (usec): min=39, max=437417, avg=53812.65, stdev=37937.07 lat (usec): min=40, max=437418, avg=53814.17, stdev=37936.94 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 13829], 10.00th=[ 19268], 20.00th=[ 26084], | 30.00th=[ 32637], 40.00th=[ 39060], 50.00th=[ 46400], 60.00th=[ 53740], | 70.00th=[ 62653], 80.00th=[ 76022], 90.00th=[ 96994], 95.00th=[116917], | 99.00th=[198181], 99.50th=[238027], 99.90th=[312476], 99.95th=[438305], | 99.99th=[438305] bw ( KiB/s): min= 7, max= 102, per=25.33%, avg=40.52, stdev=17.63, samples=284 iops : min= 1, max= 25, avg= 9.48, stdev= 4.46, samples=284 write: IOPS=10, BW=43.3KiB/s (44.3kB/s)(6348KiB/146704msec); 0 zone resets clat (usec): min=800, max=1055.2k, avg=41732.03, stdev=49186.12 lat (usec): min=802, max=1055.2k, avg=41734.47, stdev=49186.72 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1319], | 20.00th=[ 3851], 30.00th=[ 8848], 40.00th=[ 19268], | 50.00th=[ 30016], 60.00th=[ 41681], 70.00th=[ 53740], | 80.00th=[ 70779], 90.00th=[ 99091], 95.00th=[ 129500], | 99.00th=[ 173016], 99.50th=[ 193987], 99.90th=[ 350225], | 99.95th=[1052771], 99.99th=[1052771] bw ( KiB/s): min= 7, max= 112, per=25.78%, avg=43.06, stdev=20.27, samples=285 iops : min= 1, max= 28, avg=10.13, stdev= 5.13, samples=285 lat (usec) : 50=0.07%, 100=1.24%, 250=0.07%, 500=0.03%, 1000=0.16% lat (msec) : 2=7.71%, 4=2.67%, 10=5.96%, 20=8.46%, 50=34.93% lat (msec) : 100=29.39%, 250=9.02%, 500=0.26%, 2000=0.03% cpu : usr=0.09%, sys=4.42%, ctx=6126, 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=178827: Fri Sep 11 09:47:27 2026 read: IOPS=10, BW=40.6KiB/s (41.6kB/s)(6028KiB/148345msec) clat (usec): min=34, max=368367, avg=53860.81, stdev=36902.29 lat (usec): min=34, max=368369, avg=53862.86, stdev=36901.89 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 12911], 10.00th=[ 19006], 20.00th=[ 26346], | 30.00th=[ 32637], 40.00th=[ 39060], 50.00th=[ 45876], 60.00th=[ 54264], | 70.00th=[ 63177], 80.00th=[ 74974], 90.00th=[ 99091], 95.00th=[122160], | 99.00th=[185598], 99.50th=[221250], 99.90th=[263193], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 7, max= 118, per=25.39%, avg=40.63, stdev=17.85, samples=287 iops : min= 1, max= 29, avg= 9.51, stdev= 4.51, samples=287 write: IOPS=10, BW=42.2KiB/s (43.2kB/s)(6260KiB/148345msec); 0 zone resets clat (usec): min=856, max=1217.1k, avg=42523.12, stdev=54419.00 lat (usec): min=857, max=1217.1k, avg=42528.60, stdev=54419.67 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1221], 10.00th=[ 1352], | 20.00th=[ 3392], 30.00th=[ 7767], 40.00th=[ 17433], | 50.00th=[ 28443], 60.00th=[ 40109], 70.00th=[ 54264], | 80.00th=[ 72877], 90.00th=[ 103285], 95.00th=[ 130548], | 99.00th=[ 193987], 99.50th=[ 244319], 99.90th=[ 425722], | 99.95th=[1216349], 99.99th=[1216349] bw ( KiB/s): min= 7, max= 126, per=25.13%, avg=41.96, stdev=20.41, samples=288 iops : min= 1, max= 31, avg= 9.85, stdev= 5.16, samples=288 lat (usec) : 50=0.29%, 100=1.30%, 250=0.10%, 1000=0.29% lat (msec) : 2=7.42%, 4=3.26%, 10=5.92%, 20=8.79%, 50=33.56% lat (msec) : 100=28.71%, 250=10.06%, 500=0.26%, 2000=0.03% cpu : usr=0.07%, sys=4.41%, ctx=6177, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178828: Fri Sep 11 09:47:27 2026 read: IOPS=10, BW=40.3KiB/s (41.3kB/s)(6052KiB/150052msec) clat (usec): min=33, max=482638, avg=54991.09, stdev=37708.14 lat (usec): min=33, max=482639, avg=54995.30, stdev=37708.04 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 11469], 10.00th=[ 19006], 20.00th=[ 26346], | 30.00th=[ 33817], 40.00th=[ 40633], 50.00th=[ 47973], 60.00th=[ 55837], | 70.00th=[ 66323], 80.00th=[ 78119], 90.00th=[ 99091], 95.00th=[122160], | 99.00th=[179307], 99.50th=[225444], 99.90th=[299893], 99.95th=[484443], | 99.99th=[484443] bw ( KiB/s): min= 7, max= 103, per=25.28%, avg=40.45, stdev=17.55, samples=291 iops : min= 1, max= 25, avg= 9.45, stdev= 4.42, samples=291 write: IOPS=10, BW=41.6KiB/s (42.6kB/s)(6236KiB/150052msec); 0 zone resets clat (usec): min=691, max=1152.2k, avg=42521.14, stdev=53287.41 lat (usec): min=693, max=1152.2k, avg=42528.55, stdev=53286.06 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1319], | 20.00th=[ 3785], 30.00th=[ 7963], 40.00th=[ 18744], | 50.00th=[ 29230], 60.00th=[ 39060], 70.00th=[ 52167], | 80.00th=[ 72877], 90.00th=[ 103285], 95.00th=[ 137364], | 99.00th=[ 200279], 99.50th=[ 231736], 99.90th=[ 274727], | 99.95th=[1149240], 99.99th=[1149240] bw ( KiB/s): min= 7, max= 127, per=24.93%, avg=41.64, stdev=19.67, samples=291 iops : min= 1, max= 31, avg= 9.77, stdev= 4.96, samples=291 lat (usec) : 50=0.33%, 100=1.37%, 250=0.20%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=7.49%, 4=2.80%, 10=6.45%, 20=7.91%, 50=34.02% lat (msec) : 100=28.97%, 250=9.99%, 500=0.20%, 2000=0.03% cpu : usr=0.08%, sys=4.32%, ctx=6172, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=160KiB/s (164kB/s), 40.1KiB/s-40.6KiB/s (41.1kB/s-41.6kB/s), io=23.4MiB (24.6MB), run=146704-150052msec WRITE: bw=168KiB/s (172kB/s), 41.6KiB/s-43.3KiB/s (42.6kB/s-44.3kB/s), io=24.6MiB (25.7MB), run=146704-150052msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178824: Fri Sep 11 09:48:00 2026 read: IOPS=8, BW=32.7KiB/s (33.4kB/s)(5992KiB/183485msec) clat (msec): min=4, max=980, avg=47.64, stdev=53.97 lat (msec): min=4, max=980, avg=47.64, stdev=53.97 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 22], 50.00th=[ 29], 60.00th=[ 37], | 70.00th=[ 51], 80.00th=[ 75], 90.00th=[ 113], 95.00th=[ 150], | 99.00th=[ 230], 99.50th=[ 255], 99.90th=[ 376], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 167, per=26.12%, avg=33.96, stdev=30.10, samples=342 iops : min= 1, max= 41, avg= 7.83, stdev= 7.57, samples=342 write: IOPS=8, BW=34.3KiB/s (35.1kB/s)(6296KiB/183485msec); 0 zone resets clat (msec): min=6, max=474, avg=70.91, stdev=58.18 lat (msec): min=6, max=474, avg=70.91, stdev=58.18 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 18], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 39], 50.00th=[ 50], 60.00th=[ 67], | 70.00th=[ 88], 80.00th=[ 112], 90.00th=[ 148], 95.00th=[ 182], | 99.00th=[ 271], 99.50th=[ 321], 99.90th=[ 405], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 7, max= 127, per=25.20%, avg=34.28, stdev=28.16, samples=356 iops : min= 1, max= 31, avg= 7.90, stdev= 7.08, samples=356 lat (msec) : 10=4.46%, 20=18.20%, 50=37.60%, 100=20.48%, 250=18.16% lat (msec) : 500=1.07%, 1000=0.03% cpu : usr=0.06%, sys=1.45%, ctx=4794, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178826: Fri Sep 11 09:48:00 2026 read: IOPS=8, BW=32.5KiB/s (33.3kB/s)(5940KiB/182661msec) clat (msec): min=4, max=1117, avg=46.99, stdev=56.60 lat (msec): min=4, max=1117, avg=47.00, stdev=56.60 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 46], 80.00th=[ 71], 90.00th=[ 115], 95.00th=[ 153], | 99.00th=[ 236], 99.50th=[ 266], 99.90th=[ 430], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 152, per=26.42%, avg=34.35, stdev=29.34, samples=335 iops : min= 1, max= 38, avg= 7.93, stdev= 7.40, samples=335 write: IOPS=8, BW=34.8KiB/s (35.6kB/s)(6348KiB/182661msec); 0 zone resets clat (msec): min=10, max=396, avg=70.80, stdev=56.75 lat (msec): min=10, max=396, avg=70.81, stdev=56.75 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 40], 50.00th=[ 50], 60.00th=[ 67], | 70.00th=[ 87], 80.00th=[ 112], 90.00th=[ 153], 95.00th=[ 184], | 99.00th=[ 268], 99.50th=[ 296], 99.90th=[ 363], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 134, per=25.57%, avg=34.78, stdev=27.52, samples=353 iops : min= 1, max= 33, avg= 8.03, stdev= 6.92, samples=353 lat (msec) : 10=4.07%, 20=18.13%, 50=38.83%, 100=20.48%, 250=17.42% lat (msec) : 500=1.04%, 2000=0.03% cpu : usr=0.06%, sys=1.47%, ctx=4784, 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=178829: Fri Sep 11 09:48:00 2026 read: IOPS=8, BW=32.8KiB/s (33.6kB/s)(6028KiB/183751msec) clat (msec): min=4, max=437, avg=50.09, stdev=54.22 lat (msec): min=4, max=437, avg=50.09, stdev=54.21 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 23], 50.00th=[ 29], 60.00th=[ 38], | 70.00th=[ 52], 80.00th=[ 79], 90.00th=[ 118], 95.00th=[ 169], | 99.00th=[ 255], 99.50th=[ 279], 99.90th=[ 355], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 7, max= 167, per=25.65%, avg=33.34, stdev=27.62, samples=348 iops : min= 1, max= 41, avg= 7.68, stdev= 6.94, samples=348 write: IOPS=8, BW=34.1KiB/s (34.9kB/s)(6260KiB/183751msec); 0 zone resets clat (msec): min=9, max=1127, avg=68.85, stdev=62.44 lat (msec): min=9, max=1127, avg=68.86, stdev=62.44 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 32], 40.00th=[ 37], 50.00th=[ 46], 60.00th=[ 62], | 70.00th=[ 83], 80.00th=[ 110], 90.00th=[ 146], 95.00th=[ 176], | 99.00th=[ 253], 99.50th=[ 296], 99.90th=[ 558], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 135, per=25.14%, avg=34.19, stdev=28.01, samples=352 iops : min= 1, max= 33, avg= 7.89, stdev= 7.04, samples=352 lat (msec) : 10=3.74%, 20=18.10%, 50=39.29%, 100=20.48%, 250=17.25% lat (msec) : 500=1.07%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=1.47%, ctx=4748, 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=178830: Fri Sep 11 09:48:00 2026 read: IOPS=8, BW=33.0KiB/s (33.8kB/s)(6052KiB/183115msec) clat (msec): min=5, max=522, avg=46.34, stdev=49.91 lat (msec): min=5, max=522, avg=46.34, stdev=49.91 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 28], 60.00th=[ 36], | 70.00th=[ 48], 80.00th=[ 68], 90.00th=[ 112], 95.00th=[ 148], | 99.00th=[ 230], 99.50th=[ 271], 99.90th=[ 388], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 7, max= 143, per=27.42%, avg=35.64, stdev=28.95, samples=329 iops : min= 1, max= 35, avg= 8.26, stdev= 7.29, samples=329 write: IOPS=8, BW=34.1KiB/s (34.9kB/s)(6236KiB/183115msec); 0 zone resets clat (msec): min=8, max=1146, avg=72.17, stdev=65.27 lat (msec): min=8, max=1146, avg=72.18, stdev=65.27 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 38], 50.00th=[ 49], 60.00th=[ 67], | 70.00th=[ 87], 80.00th=[ 113], 90.00th=[ 155], 95.00th=[ 186], | 99.00th=[ 284], 99.50th=[ 338], 99.90th=[ 567], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 127, per=25.22%, avg=34.30, stdev=27.43, samples=352 iops : min= 1, max= 31, avg= 7.92, stdev= 6.90, samples=352 lat (msec) : 10=3.58%, 20=18.82%, 50=38.67%, 100=20.41%, 250=17.42% lat (msec) : 500=1.01%, 750=0.07%, 2000=0.03% cpu : usr=0.07%, sys=1.52%, ctx=4856, 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=131KiB/s (134kB/s), 32.5KiB/s-33.0KiB/s (33.3kB/s-33.8kB/s), io=23.4MiB (24.6MB), run=182661-183751msec WRITE: bw=137KiB/s (140kB/s), 34.1KiB/s-34.8KiB/s (34.9kB/s-35.6kB/s), io=24.6MiB (25.7MB), run=182661-183751msec 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=178876: Fri Sep 11 09:48:49 2026 read: IOPS=10, BW=160KiB/s (164kB/s)(5920KiB/36993msec) clat (usec): min=22, max=208659, avg=51640.52, stdev=33055.44 lat (usec): min=22, max=208661, avg=51641.87, stdev=33055.44 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 64], 10.00th=[ 15401], 20.00th=[ 25297], | 30.00th=[ 34341], 40.00th=[ 41157], 50.00th=[ 49021], 60.00th=[ 55313], | 70.00th=[ 63177], 80.00th=[ 72877], 90.00th=[ 90702], 95.00th=[111674], | 99.00th=[160433], 99.50th=[208667], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 62, max= 416, per=25.28%, avg=160.51, stdev=63.03, samples=72 iops : min= 3, max= 26, avg= 9.31, stdev= 4.03, samples=72 write: IOPS=10, BW=172KiB/s (176kB/s)(6368KiB/36993msec); 0 zone resets clat (usec): min=1273, max=221977, avg=44678.01, stdev=43867.85 lat (usec): min=1274, max=221979, avg=44680.11, stdev=43867.93 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1745], 10.00th=[ 2114], 20.00th=[ 6456], | 30.00th=[ 12649], 40.00th=[ 22152], 50.00th=[ 33817], 60.00th=[ 43254], | 70.00th=[ 57934], 80.00th=[ 74974], 90.00th=[110625], 95.00th=[139461], | 99.00th=[183501], 99.50th=[200279], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 31, max= 401, per=25.77%, avg=172.11, stdev=71.51, samples=72 iops : min= 1, max= 25, avg=10.04, stdev= 4.60, samples=72 lat (usec) : 50=1.04%, 100=2.99%, 250=0.13% lat (msec) : 2=5.08%, 4=2.34%, 10=5.73%, 20=8.59%, 50=33.07% lat (msec) : 100=31.77%, 250=9.24% cpu : usr=0.06%, sys=4.99%, ctx=1589, 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=178877: Fri Sep 11 09:48:49 2026 read: IOPS=9, BW=155KiB/s (159kB/s)(5744KiB/37075msec) clat (usec): min=36, max=237913, avg=51583.85, stdev=33688.80 lat (usec): min=37, max=237915, avg=51585.23, stdev=33688.87 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 65], 10.00th=[ 16319], 20.00th=[ 27132], | 30.00th=[ 33817], 40.00th=[ 40633], 50.00th=[ 47973], 60.00th=[ 53216], | 70.00th=[ 60556], 80.00th=[ 73925], 90.00th=[ 93848], 95.00th=[115868], | 99.00th=[162530], 99.50th=[173016], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 30, max= 315, per=24.28%, avg=154.15, stdev=68.27, samples=72 iops : min= 1, max= 19, avg= 8.89, stdev= 4.30, samples=72 write: IOPS=11, BW=177KiB/s (181kB/s)(6544KiB/37075msec); 0 zone resets clat (usec): min=1342, max=214423, avg=44295.11, stdev=42304.10 lat (usec): min=1343, max=214425, avg=44297.71, stdev=42303.83 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1795], 10.00th=[ 2802], 20.00th=[ 7308], | 30.00th=[ 14877], 40.00th=[ 24249], 50.00th=[ 31851], 60.00th=[ 41157], | 70.00th=[ 55837], 80.00th=[ 73925], 90.00th=[106431], 95.00th=[129500], | 99.00th=[181404], 99.50th=[206570], 99.90th=[214959], 99.95th=[214959], | 99.99th=[214959] bw ( KiB/s): min= 31, max= 463, per=26.69%, avg=178.30, stdev=80.57, samples=71 iops : min= 1, max= 28, avg=10.42, stdev= 5.08, samples=71 lat (usec) : 50=0.13%, 100=3.39%, 750=0.13% lat (msec) : 2=4.17%, 4=3.78%, 10=4.95%, 20=8.33%, 50=35.81% lat (msec) : 100=29.30%, 250=10.03% cpu : usr=0.06%, sys=4.62%, ctx=1593, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178878: Fri Sep 11 09:48:49 2026 read: IOPS=11, BW=180KiB/s (184kB/s)(6256KiB/34812msec) clat (usec): min=45, max=235436, avg=50747.41, stdev=33245.32 lat (usec): min=46, max=235437, avg=50748.96, stdev=33245.32 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 11469], 20.00th=[ 25297], | 30.00th=[ 33817], 40.00th=[ 40109], 50.00th=[ 45351], 60.00th=[ 52691], | 70.00th=[ 63701], 80.00th=[ 72877], 90.00th=[ 90702], 95.00th=[108528], | 99.00th=[162530], 99.50th=[173016], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 30, max= 463, per=28.79%, avg=182.82, stdev=74.25, samples=67 iops : min= 1, max= 28, avg=10.70, stdev= 4.70, samples=67 write: IOPS=10, BW=173KiB/s (177kB/s)(6032KiB/34812msec); 0 zone resets clat (usec): min=1181, max=203653, avg=38843.20, stdev=40116.99 lat (usec): min=1183, max=203655, avg=38864.39, stdev=40112.05 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1745], 10.00th=[ 1991], 20.00th=[ 5604], | 30.00th=[ 10945], 40.00th=[ 17433], 50.00th=[ 25035], 60.00th=[ 35914], | 70.00th=[ 49546], 80.00th=[ 66847], 90.00th=[ 93848], 95.00th=[124257], | 99.00th=[181404], 99.50th=[196084], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 32, max= 405, per=25.80%, avg=172.32, stdev=79.65, samples=68 iops : min= 2, max= 25, avg=10.03, stdev= 5.02, samples=68 lat (usec) : 50=0.13%, 100=4.17%, 250=0.39% lat (msec) : 2=4.95%, 4=2.86%, 10=6.12%, 20=9.24%, 50=35.42% lat (msec) : 100=28.78%, 250=7.94% cpu : usr=0.07%, sys=5.35%, ctx=1612, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178880: Fri Sep 11 09:48:49 2026 read: IOPS=10, BW=160KiB/s (164kB/s)(6032KiB/37680msec) clat (usec): min=23, max=220061, avg=54920.02, stdev=39541.83 lat (usec): min=24, max=220063, avg=54921.42, stdev=39541.86 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 60], 10.00th=[ 68], 20.00th=[ 27132], | 30.00th=[ 33817], 40.00th=[ 41681], 50.00th=[ 50594], 60.00th=[ 58983], | 70.00th=[ 67634], 80.00th=[ 79168], 90.00th=[102237], 95.00th=[130548], | 99.00th=[191890], 99.50th=[219153], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 370, per=25.84%, avg=164.07, stdev=70.05, samples=72 iops : min= 1, max= 23, avg= 9.51, stdev= 4.45, samples=72 write: IOPS=10, BW=166KiB/s (170kB/s)(6256KiB/37680msec); 0 zone resets clat (usec): min=1424, max=218984, avg=42546.60, stdev=40892.60 lat (usec): min=1426, max=218986, avg=42551.44, stdev=40891.28 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1762], 10.00th=[ 2180], 20.00th=[ 6652], | 30.00th=[ 13304], 40.00th=[ 21365], 50.00th=[ 30802], 60.00th=[ 44303], | 70.00th=[ 54789], 80.00th=[ 71828], 90.00th=[ 94897], 95.00th=[128451], | 99.00th=[183501], 99.50th=[210764], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 370, per=24.84%, avg=165.96, stdev=73.00, samples=74 iops : min= 1, max= 23, avg= 9.65, stdev= 4.66, samples=74 lat (usec) : 50=0.78%, 100=5.47% lat (msec) : 2=4.82%, 4=2.21%, 10=5.47%, 20=8.07%, 50=31.12% lat (msec) : 100=31.77%, 250=10.29% cpu : usr=0.06%, sys=4.86%, ctx=1611, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=636KiB/s (651kB/s), 155KiB/s-180KiB/s (159kB/s-184kB/s), io=23.4MiB (24.5MB), run=34812-37680msec WRITE: bw=669KiB/s (685kB/s), 166KiB/s-177KiB/s (170kB/s-181kB/s), io=24.6MiB (25.8MB), run=34812-37680msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178879: Fri Sep 11 09:49:04 2026 read: IOPS=7, BW=113KiB/s (115kB/s)(5920KiB/52546msec) clat (msec): min=9, max=258, avg=54.49, stdev=48.12 lat (msec): min=9, max=258, avg=54.50, stdev=48.12 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 38], 60.00th=[ 44], | 70.00th=[ 55], 80.00th=[ 75], 90.00th=[ 123], 95.00th=[ 184], | 99.00th=[ 218], 99.50th=[ 236], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 30, max= 384, per=26.32%, avg=119.25, stdev=74.26, samples=97 iops : min= 1, max= 24, avg= 6.61, stdev= 4.67, samples=97 write: IOPS=7, BW=121KiB/s (124kB/s)(6368KiB/52546msec); 0 zone resets clat (msec): min=11, max=310, avg=80.52, stdev=52.10 lat (msec): min=11, max=310, avg=80.53, stdev=52.10 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 27], 10.00th=[ 31], 20.00th=[ 39], | 30.00th=[ 46], 40.00th=[ 54], 50.00th=[ 65], 60.00th=[ 80], | 70.00th=[ 95], 80.00th=[ 120], 90.00th=[ 159], 95.00th=[ 188], | 99.00th=[ 241], 99.50th=[ 305], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 21, max= 318, per=25.57%, avg=121.96, stdev=65.96, samples=102 iops : min= 1, max= 19, avg= 6.78, stdev= 4.14, samples=102 lat (msec) : 10=0.39%, 20=8.33%, 50=41.67%, 100=29.30%, 250=19.79% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.30%, ctx=1109, 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=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=178881: Fri Sep 11 09:49:04 2026 read: IOPS=6, BW=109KiB/s (111kB/s)(5744KiB/52767msec) clat (msec): min=6, max=264, avg=55.75, stdev=45.04 lat (msec): min=6, max=264, avg=55.75, stdev=45.04 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 23], | 30.00th=[ 29], 40.00th=[ 36], 50.00th=[ 41], 60.00th=[ 52], | 70.00th=[ 61], 80.00th=[ 80], 90.00th=[ 120], 95.00th=[ 163], | 99.00th=[ 215], 99.50th=[ 222], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 21, max= 412, per=24.97%, avg=113.10, stdev=76.25, samples=98 iops : min= 1, max= 25, avg= 6.22, stdev= 4.80, samples=98 write: IOPS=7, BW=124KiB/s (127kB/s)(6544KiB/52767msec); 0 zone resets clat (msec): min=11, max=327, avg=79.11, stdev=51.78 lat (msec): min=11, max=327, avg=79.12, stdev=51.78 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 39], | 30.00th=[ 45], 40.00th=[ 55], 50.00th=[ 64], 60.00th=[ 77], | 70.00th=[ 92], 80.00th=[ 115], 90.00th=[ 153], 95.00th=[ 201], | 99.00th=[ 239], 99.50th=[ 257], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 21, max= 320, per=25.63%, avg=122.27, stdev=66.97, samples=103 iops : min= 1, max= 20, avg= 6.81, stdev= 4.22, samples=103 lat (msec) : 10=1.04%, 20=7.42%, 50=39.06%, 100=33.33%, 250=18.62% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=1.43%, ctx=1144, 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=178882: Fri Sep 11 09:49:04 2026 read: IOPS=7, BW=119KiB/s (122kB/s)(6256KiB/52540msec) clat (msec): min=8, max=332, avg=55.86, stdev=48.95 lat (msec): min=8, max=332, avg=55.89, stdev=49.01 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 47], | 70.00th=[ 59], 80.00th=[ 72], 90.00th=[ 113], 95.00th=[ 180], | 99.00th=[ 241], 99.50th=[ 296], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 30, max= 448, per=26.60%, avg=120.52, stdev=80.27, samples=102 iops : min= 1, max= 28, avg= 6.70, stdev= 5.06, samples=102 write: IOPS=7, BW=115KiB/s (118kB/s)(6032KiB/52540msec); 0 zone resets clat (msec): min=15, max=263, avg=80.71, stdev=49.68 lat (msec): min=15, max=263, avg=80.72, stdev=49.69 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 27], 10.00th=[ 32], 20.00th=[ 41], | 30.00th=[ 47], 40.00th=[ 56], 50.00th=[ 67], 60.00th=[ 81], | 70.00th=[ 94], 80.00th=[ 122], 90.00th=[ 148], 95.00th=[ 188], | 99.00th=[ 255], 99.50th=[ 264], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 30, max= 345, per=24.61%, avg=117.37, stdev=62.51, samples=100 iops : min= 1, max= 21, avg= 6.50, stdev= 3.94, samples=100 lat (msec) : 10=0.52%, 20=7.16%, 50=40.76%, 100=31.51%, 250=19.14% lat (msec) : 500=0.91% cpu : usr=0.04%, sys=1.43%, ctx=1203, 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=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=178883: Fri Sep 11 09:49:04 2026 read: IOPS=7, BW=115KiB/s (117kB/s)(6032KiB/52580msec) clat (msec): min=7, max=367, avg=60.16, stdev=52.47 lat (msec): min=7, max=367, avg=60.17, stdev=52.47 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 64], 80.00th=[ 91], 90.00th=[ 133], 95.00th=[ 171], | 99.00th=[ 259], 99.50th=[ 296], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 30, max= 348, per=25.88%, avg=117.24, stdev=68.11, samples=100 iops : min= 1, max= 21, avg= 6.49, stdev= 4.28, samples=100 write: IOPS=7, BW=119KiB/s (122kB/s)(6256KiB/52580msec); 0 zone resets clat (msec): min=16, max=294, avg=76.19, stdev=46.79 lat (msec): min=16, max=294, avg=76.20, stdev=46.79 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 29], 10.00th=[ 33], 20.00th=[ 39], | 30.00th=[ 45], 40.00th=[ 53], 50.00th=[ 65], 60.00th=[ 77], | 70.00th=[ 88], 80.00th=[ 109], 90.00th=[ 138], 95.00th=[ 167], | 99.00th=[ 255], 99.50th=[ 275], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 30, max= 383, per=24.92%, avg=118.86, stdev=69.37, samples=103 iops : min= 1, max= 23, avg= 6.59, stdev= 4.38, samples=103 lat (msec) : 10=0.39%, 20=6.90%, 50=40.10%, 100=32.94%, 250=18.62% lat (msec) : 500=1.04% cpu : usr=0.06%, sys=1.43%, ctx=1143, 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=454KiB/s (465kB/s), 109KiB/s-119KiB/s (111kB/s-122kB/s), io=23.4MiB (24.5MB), run=52540-52767msec WRITE: bw=478KiB/s (489kB/s), 115KiB/s-124KiB/s (118kB/s-127kB/s), io=24.6MiB (25.8MB), run=52540-52767msec 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=178899: Fri Sep 11 09:49:20 2026 read: IOPS=0, BW=912KiB/s (934kB/s)(7168KiB/7862msec) clat (usec): min=481, max=381450, avg=247488.49, stdev=128410.49 lat (usec): min=482, max=381453, avg=247490.27, stdev=128410.92 clat percentiles (usec): | 1.00th=[ 482], 5.00th=[ 482], 10.00th=[ 482], 20.00th=[158335], | 30.00th=[270533], 40.00th=[270533], 50.00th=[291505], 60.00th=[308282], | 70.00th=[308282], 80.00th=[325059], 90.00th=[379585], 95.00th=[379585], | 99.00th=[379585], 99.50th=[379585], 99.90th=[379585], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 2019, max= 4079, per=100.00%, avg=3045.00, stdev=1175.58, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=651KiB/s (667kB/s)(5120KiB/7862msec); 0 zone resets clat (msec): min=259, max=3673, avg=1128.30, stdev=1437.16 lat (msec): min=260, max=3673, avg=1128.38, stdev=1437.17 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 3675], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 1709, max= 2048, per=62.98%, avg=1934.25, stdev=154.46, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=8.33%, 500=58.33%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.35%, ctx=145, 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=178901: Fri Sep 11 09:49:20 2026 read: IOPS=0, BW=219KiB/s (225kB/s)(2048KiB/9334msec) clat (usec): min=524, max=396531, avg=198528.11, stdev=280018.86 lat (usec): min=526, max=396533, avg=198529.94, stdev=280019.65 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 529], 40.00th=[ 529], 50.00th=[ 529], 60.00th=[396362], | 70.00th=[396362], 80.00th=[396362], 90.00th=[396362], 95.00th=[396362], | 99.00th=[396362], 99.50th=[396362], 99.90th=[396362], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 1969, max= 2023, per=90.98%, avg=1996.00, stdev=38.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1097KiB/s (1123kB/s)(10.0MiB/9334msec); 0 zone resets clat (msec): min=151, max=4777, avg=847.98, stdev=1400.15 lat (msec): min=151, max=4777, avg=848.07, stdev=1400.16 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 213], | 30.00th=[ 257], 40.00th=[ 300], 50.00th=[ 305], 60.00th=[ 405], | 70.00th=[ 439], 80.00th=[ 776], 90.00th=[ 860], 95.00th=[ 4799], | 99.00th=[ 4799], 99.50th=[ 4799], 99.90th=[ 4799], 99.95th=[ 4799], | 99.99th=[ 4799] bw ( KiB/s): min= 1709, max= 4079, per=83.06%, avg=2550.71, stdev=1003.73, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (usec) : 750=8.33% lat (msec) : 250=16.67%, 500=50.00%, 1000=16.67%, >=2000=8.33% cpu : usr=0.02%, sys=5.82%, ctx=194, 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=178903: Fri Sep 11 09:49:20 2026 read: IOPS=0, BW=721KiB/s (739kB/s)(6144KiB/8516msec) clat (usec): min=690, max=4272.6k, avg=940426.38, stdev=1643816.58 lat (usec): min=691, max=4272.6k, avg=940427.83, stdev=1643816.52 clat percentiles (usec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], | 20.00th=[ 123208], 30.00th=[ 123208], 40.00th=[ 274727], | 50.00th=[ 274727], 60.00th=[ 476054], 70.00th=[ 492831], | 80.00th=[ 492831], 90.00th=[4278191], 95.00th=[4278191], | 99.00th=[4278191], 99.50th=[4278191], 99.90th=[4278191], | 99.95th=[4278191], 99.99th=[4278191] bw ( KiB/s): min= 1709, max= 4015, per=100.00%, avg=2433.00, stdev=1064.18, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=721KiB/s (739kB/s)(6144KiB/8516msec); 0 zone resets clat (msec): min=307, max=885, avg=453.59, stdev=216.71 lat (msec): min=307, max=886, avg=453.69, stdev=216.71 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 405], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 1815, max= 2048, per=63.93%, avg=1963.20, stdev=90.51, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=8.33%, 500=66.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.06%, sys=5.46%, ctx=659, 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=178905: Fri Sep 11 09:49:20 2026 read: IOPS=1, BW=1156KiB/s (1184kB/s)(5120KiB/4428msec) clat (usec): min=365, max=408164, avg=135920.02, stdev=191753.84 lat (usec): min=366, max=408165, avg=135921.08, stdev=191753.96 clat percentiles (usec): | 1.00th=[ 367], 5.00th=[ 367], 10.00th=[ 367], 20.00th=[ 367], | 30.00th=[ 457], 40.00th=[ 457], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[270533], 80.00th=[270533], 90.00th=[408945], 95.00th=[408945], | 99.00th=[408945], 99.50th=[408945], 99.90th=[408945], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 7846, max= 7846, per=100.00%, avg=7846.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1619KiB/s (1658kB/s)(7168KiB/4428msec); 0 zone resets clat (msec): min=221, max=1044, avg=487.67, stdev=306.81 lat (msec): min=222, max=1044, avg=487.75, stdev=306.81 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 245], | 30.00th=[ 266], 40.00th=[ 266], 50.00th=[ 351], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 709], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 1709, max= 4039, per=77.23%, avg=2371.60, stdev=942.88, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 250=16.67%, 500=33.33%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=7.41%, ctx=137, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2194KiB/s (2247kB/s), 219KiB/s-1156KiB/s (225kB/s-1184kB/s), io=20.0MiB (20.0MB), run=4428-9334msec WRITE: bw=3072KiB/s (3146kB/s), 651KiB/s-1619KiB/s (667kB/s-1658kB/s), io=28.0MiB (29.4MB), run=4428-9334msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178898: Fri Sep 11 09:49:21 2026 read: IOPS=0, BW=841KiB/s (861kB/s)(7168KiB/8522msec) clat (msec): min=66, max=909, avg=246.33, stdev=301.66 lat (msec): min=66, max=909, avg=246.33, stdev=301.66 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 67], 10.00th=[ 67], 20.00th=[ 72], | 30.00th=[ 82], 40.00th=[ 82], 50.00th=[ 138], 60.00th=[ 188], | 70.00th=[ 188], 80.00th=[ 268], 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= 1759, max= 4382, per=100.00%, avg=2508.00, stdev=1253.86, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=0, BW=601KiB/s (615kB/s)(5120KiB/8522msec); 0 zone resets clat (msec): min=192, max=3989, avg=1309.12, stdev=1547.81 lat (msec): min=192, max=3990, avg=1309.19, stdev=1547.82 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 192], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 3977], 95.00th=[ 3977], | 99.00th=[ 3977], 99.50th=[ 3977], 99.90th=[ 3977], 99.95th=[ 3977], | 99.99th=[ 3977] bw ( KiB/s): min= 1935, max= 2019, per=68.67%, avg=1997.00, stdev=41.38, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=25.00%, 250=25.00%, 500=16.67%, 1000=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.92%, ctx=80, 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=178900: Fri Sep 11 09:49:21 2026 read: IOPS=0, BW=208KiB/s (213kB/s)(2048KiB/9859msec) clat (msec): min=96, max=1151, avg=624.17, stdev=745.54 lat (msec): min=97, max=1151, avg=624.17, stdev=745.54 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 97], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 97], 60.00th=[ 1150], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 1872, max= 2015, per=93.57%, avg=1943.50, stdev=101.12, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1039KiB/s (1064kB/s)(10.0MiB/9859msec); 0 zone resets clat (msec): min=108, max=4617, avg=818.92, stdev=1360.91 lat (msec): min=109, max=4617, avg=819.05, stdev=1360.88 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 114], | 30.00th=[ 279], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 359], | 70.00th=[ 414], 80.00th=[ 793], 90.00th=[ 927], 95.00th=[ 4597], | 99.00th=[ 4597], 99.50th=[ 4597], 99.90th=[ 4597], 99.95th=[ 4597], | 99.99th=[ 4597] bw ( KiB/s): min= 1759, max= 4039, per=77.35%, avg=2249.33, stdev=880.90, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 100=8.33%, 250=16.67%, 500=41.67%, 1000=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.03%, sys=2.64%, ctx=87, 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=178902: Fri Sep 11 09:49:21 2026 read: IOPS=0, BW=666KiB/s (682kB/s)(6144KiB/9227msec) clat (msec): min=97, max=4251, avg=881.38, stdev=1654.32 lat (msec): min=97, max=4251, avg=881.39, stdev=1654.32 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 99], | 30.00th=[ 99], 40.00th=[ 171], 50.00th=[ 171], 60.00th=[ 330], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 4245], 95.00th=[ 4245], | 99.00th=[ 4245], 99.50th=[ 4245], 99.90th=[ 4245], 99.95th=[ 4245], | 99.99th=[ 4245] bw ( KiB/s): min= 3871, max= 5616, per=100.00%, avg=4743.50, stdev=1233.90, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=0, BW=666KiB/s (682kB/s)(6144KiB/9227msec); 0 zone resets clat (msec): min=133, max=1143, avg=596.44, stdev=440.87 lat (msec): min=133, max=1144, avg=596.52, stdev=440.87 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 510], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 1872, max= 2035, per=67.57%, avg=1965.00, stdev=85.23, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 750=8.33%, 2000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.54%, ctx=82, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178904: Fri Sep 11 09:49:21 2026 read: IOPS=0, BW=520KiB/s (533kB/s)(5120KiB/9842msec) clat (msec): min=83, max=659, avg=275.25, stdev=258.24 lat (msec): min=83, max=659, avg=275.25, stdev=258.24 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 85], | 30.00th=[ 100], 40.00th=[ 100], 50.00th=[ 107], 60.00th=[ 107], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1872, max= 2019, per=95.44%, avg=1982.25, stdev=73.50, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=0, BW=728KiB/s (746kB/s)(7168KiB/9842msec); 0 zone resets clat (msec): min=94, max=4683, avg=1166.43, stdev=1634.24 lat (msec): min=94, max=4684, avg=1166.53, stdev=1634.25 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 136], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 477], 60.00th=[ 1200], | 70.00th=[ 1200], 80.00th=[ 1368], 90.00th=[ 4665], 95.00th=[ 4665], | 99.00th=[ 4665], 99.50th=[ 4665], 99.90th=[ 4665], 99.95th=[ 4665], | 99.99th=[ 4665] bw ( KiB/s): min= 1872, max= 6059, per=100.00%, avg=3496.25, stdev=1974.38, samples=4 iops : min= 1, max= 5, avg= 2.50, stdev= 1.91, samples=4 lat (msec) : 100=25.00%, 250=25.00%, 500=16.67%, 750=8.33%, 2000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.04%, ctx=99, 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=2077KiB/s (2127kB/s), 208KiB/s-841KiB/s (213kB/s-861kB/s), io=20.0MiB (20.0MB), run=8522-9859msec WRITE: bw=2908KiB/s (2978kB/s), 601KiB/s-1039KiB/s (615kB/s-1064kB/s), io=28.0MiB (29.4MB), run=8522-9859msec 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=178914: Fri Sep 11 09:49:37 2026 read: IOPS=0, BW=3577KiB/s (3663kB/s)(12.0MiB/3435msec) clat (msec): min=891, max=1487, avg=1105.50, stdev=331.98 lat (msec): min=891, max=1487, avg=1105.50, stdev=331.98 clat percentiles (msec): | 1.00th=[ 894], 5.00th=[ 894], 10.00th=[ 894], 20.00th=[ 894], | 30.00th=[ 894], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 8110, max= 8192, per=100.00%, avg=8151.00, stdev=57.98, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=2.36%, ctx=61, 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=178915: Fri Sep 11 09:49:37 2026 read: IOPS=0, BW=3821KiB/s (3913kB/s)(4096KiB/1072msec) clat (nsec): min=259651k, max=259651k, avg=259651386.00, stdev= 0.00 lat (nsec): min=259654k, max=259654k, avg=259653611.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 259], 50.00th=[ 259], 60.00th=[ 259], | 70.00th=[ 259], 80.00th=[ 259], 90.00th=[ 259], 95.00th=[ 259], | 99.00th=[ 259], 99.50th=[ 259], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 7742, max= 7742, per=100.00%, avg=7742.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=7642KiB/s (7825kB/s)(8192KiB/1072msec); 0 zone resets clat (msec): min=366, max=368, avg=367.81, stdev= 1.39 lat (msec): min=367, max=369, avg=368.30, stdev= 1.31 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7892, max= 7892, per=72.14%, avg=7892.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=100.00% cpu : usr=0.19%, sys=9.99%, ctx=52, 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=178916: Fri Sep 11 09:49:37 2026 write: IOPS=1, BW=4103KiB/s (4201kB/s)(12.0MiB/2995msec); 0 zone resets clat (msec): min=686, max=1438, avg=966.09, stdev=411.59 lat (msec): min=687, max=1439, avg=966.70, stdev=411.75 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7892, max= 8000, per=72.63%, avg=7946.00, stdev=76.37, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=2.84%, ctx=42, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178917: Fri Sep 11 09:49:37 2026 write: IOPS=1, BW=5401KiB/s (5531kB/s)(12.0MiB/2275msec); 0 zone resets clat (msec): min=233, max=1613, avg=729.76, stdev=767.06 lat (msec): min=235, max=1613, avg=730.87, stdev=766.39 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 234], | 30.00th=[ 234], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7670, max= 7892, per=71.12%, avg=7781.00, stdev=156.98, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.09%, sys=5.41%, 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=4770KiB/s (4884kB/s), 3577KiB/s-3821KiB/s (3663kB/s-3913kB/s), io=16.0MiB (16.8MB), run=1072-3435msec WRITE: bw=10.7MiB/s (11.2MB/s), 4103KiB/s-7642KiB/s (4201kB/s-7825kB/s), io=32.0MiB (33.6MB), run=1072-2995msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178919: Fri Sep 11 09:49:38 2026 read: IOPS=1, BW=4844KiB/s (4960kB/s)(12.0MiB/2537msec) clat (msec): min=757, max=901, avg=844.59, stdev=76.57 lat (msec): min=757, max=901, avg=844.59, stdev=76.57 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 8078, max= 8175, per=100.00%, avg=8126.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.16%, sys=13.92%, ctx=273, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178920: Fri Sep 11 09:49:38 2026 read: IOPS=0, BW=1476KiB/s (1511kB/s)(4096KiB/2775msec) clat (nsec): min=717965k, max=717965k, avg=717965102.00, stdev= 0.00 lat (nsec): min=717967k, max=717967k, avg=717967096.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2952KiB/s (3023kB/s)(8192KiB/2775msec); 0 zone resets clat (msec): min=689, max=1364, avg=1027.14, stdev=477.36 lat (msec): min=689, max=1365, avg=1027.77, stdev=477.84 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 1368], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 8175, max= 8175, per=80.06%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.07%, sys=4.36%, ctx=99, 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=178921: Fri Sep 11 09:49:38 2026 write: IOPS=0, BW=3829KiB/s (3921kB/s)(12.0MiB/3209msec); 0 zone resets clat (msec): min=199, max=2173, avg=1066.84, stdev=1008.72 lat (msec): min=199, max=2173, avg=1067.25, stdev=1008.57 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 2165], 80.00th=[ 2165], 90.00th=[ 2165], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8094, max= 8175, per=79.66%, avg=8134.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.12%, 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=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=178922: Fri Sep 11 09:49:38 2026 write: IOPS=1, BW=4539KiB/s (4648kB/s)(12.0MiB/2707msec); 0 zone resets clat (msec): min=227, max=1777, avg=900.23, stdev=795.08 lat (msec): min=228, max=1778, avg=900.89, stdev=794.80 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 228], 10.00th=[ 228], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8078, max= 8192, per=79.67%, avg=8135.00, stdev=80.61, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.62%, ctx=46, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5904KiB/s (6046kB/s), 1476KiB/s-4844KiB/s (1511kB/s-4960kB/s), io=16.0MiB (16.8MB), run=2537-2775msec WRITE: bw=9.97MiB/s (10.5MB/s), 2952KiB/s-4539KiB/s (3023kB/s-4648kB/s), io=32.0MiB (33.6MB), run=2707-3209msec