== sanity test 398b: DIO and buffer IO race ============== 09:04:31 (1787317471) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.67788 s, 8.9 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145057: Fri Aug 21 09:06:45 2026 read: IOPS=12, BW=51.7KiB/s (52.0kB/s)(5992KiB/115854msec) clat (usec): min=30, max=1012.5k, avg=37584.56, stdev=40829.87 lat (usec): min=30, max=1012.5k, avg=37585.73, stdev=40829.90 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 55], 10.00th=[ 64], | 20.00th=[ 16057], 30.00th=[ 20841], 40.00th=[ 25297], | 50.00th=[ 30540], 60.00th=[ 36963], 70.00th=[ 44827], | 80.00th=[ 56361], 90.00th=[ 71828], 95.00th=[ 88605], | 99.00th=[ 147850], 99.50th=[ 189793], 99.90th=[ 484443], | 99.95th=[1010828], 99.99th=[1010828] bw ( KiB/s): min= 7, max= 159, per=25.31%, avg=52.39, stdev=21.54, samples=224 iops : min= 1, max= 39, avg=12.48, stdev= 5.40, samples=224 write: IOPS=13, BW=54.3KiB/s (55.6kB/s)(6296KiB/115854msec); 0 zone resets clat (usec): min=1121, max=301135, avg=37593.82, stdev=38289.84 lat (usec): min=1122, max=301136, avg=37595.34, stdev=38289.83 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1336], 10.00th=[ 1778], 20.00th=[ 4424], | 30.00th=[ 8455], 40.00th=[ 17957], 50.00th=[ 27657], 60.00th=[ 38011], | 70.00th=[ 49546], 80.00th=[ 64226], 90.00th=[ 85459], 95.00th=[110625], | 99.00th=[166724], 99.50th=[200279], 99.90th=[267387], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 7, max= 149, per=25.27%, avg=54.59, stdev=22.13, samples=226 iops : min= 1, max= 37, avg=13.02, stdev= 5.59, samples=226 lat (usec) : 50=1.33%, 100=4.72%, 250=0.36%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.99%, 4=3.68%, 10=7.29%, 20=11.59%, 50=37.08% lat (msec) : 100=22.62%, 250=4.92%, 500=0.20%, 2000=0.03% cpu : usr=0.07%, sys=5.93%, ctx=6483, 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=145058: Fri Aug 21 09:06:45 2026 read: IOPS=12, BW=51.3KiB/s (52.6kB/s)(5940KiB/115680msec) clat (usec): min=28, max=446919, avg=36700.38, stdev=30699.25 lat (usec): min=28, max=446920, avg=36704.74, stdev=30697.97 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 56], 10.00th=[ 69], 20.00th=[ 16581], | 30.00th=[ 21627], 40.00th=[ 25560], 50.00th=[ 31065], 60.00th=[ 36963], | 70.00th=[ 44827], 80.00th=[ 55837], 90.00th=[ 71828], 95.00th=[ 88605], | 99.00th=[125305], 99.50th=[154141], 99.90th=[248513], 99.95th=[446694], | 99.99th=[446694] bw ( KiB/s): min= 7, max= 119, per=24.71%, avg=51.15, stdev=21.95, samples=227 iops : min= 1, max= 29, avg=12.16, stdev= 5.51, samples=227 write: IOPS=13, BW=54.9KiB/s (56.2kB/s)(6348KiB/115680msec); 0 zone resets clat (usec): min=1162, max=947575, avg=38275.90, stdev=45031.18 lat (usec): min=1164, max=947576, avg=38279.10, stdev=45030.72 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1319], 10.00th=[ 1762], 20.00th=[ 4178], | 30.00th=[ 8029], 40.00th=[ 16712], 50.00th=[ 26608], 60.00th=[ 37487], | 70.00th=[ 50070], 80.00th=[ 65799], 90.00th=[ 89654], 95.00th=[114820], | 99.00th=[170918], 99.50th=[214959], 99.90th=[256902], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 7, max= 141, per=25.43%, avg=54.92, stdev=21.18, samples=226 iops : min= 1, max= 35, avg=13.12, stdev= 5.33, samples=226 lat (usec) : 50=0.91%, 100=4.82%, 250=0.36%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=6.05%, 4=4.07%, 10=7.75%, 20=10.61%, 50=37.57% lat (msec) : 100=22.66%, 250=4.88%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=5.96%, ctx=6598, 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=145059: Fri Aug 21 09:06:45 2026 read: IOPS=13, BW=52.9KiB/s (54.2kB/s)(6028KiB/113933msec) clat (usec): min=31, max=363269, avg=36524.82, stdev=31275.26 lat (usec): min=32, max=363270, avg=36526.30, stdev=31275.05 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 53], 10.00th=[ 61], 20.00th=[ 15139], | 30.00th=[ 20841], 40.00th=[ 25822], 50.00th=[ 31327], 60.00th=[ 36963], | 70.00th=[ 43779], 80.00th=[ 54789], 90.00th=[ 70779], 95.00th=[ 87557], | 99.00th=[137364], 99.50th=[196084], 99.90th=[278922], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 7, max= 143, per=25.44%, avg=52.66, stdev=23.60, samples=224 iops : min= 1, max= 35, avg=12.54, stdev= 5.95, samples=224 write: IOPS=13, BW=54.9KiB/s (56.3kB/s)(6260KiB/113933msec); 0 zone resets clat (usec): min=1034, max=933471, avg=37374.28, stdev=44065.17 lat (usec): min=1036, max=933472, avg=37383.03, stdev=44062.51 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1303], 10.00th=[ 1729], 20.00th=[ 3851], | 30.00th=[ 8160], 40.00th=[ 16581], 50.00th=[ 27395], 60.00th=[ 36439], | 70.00th=[ 47449], 80.00th=[ 63701], 90.00th=[ 88605], 95.00th=[114820], | 99.00th=[162530], 99.50th=[187696], 99.90th=[270533], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 15, max= 135, per=25.30%, avg=54.66, stdev=20.83, samples=224 iops : min= 3, max= 33, avg=13.04, stdev= 5.25, samples=224 lat (usec) : 50=1.46%, 100=5.08%, 250=0.20%, 500=0.07%, 750=0.13% lat (usec) : 1000=0.03% lat (msec) : 2=5.96%, 4=4.56%, 10=6.87%, 20=11.30%, 50=38.12% lat (msec) : 100=21.09%, 250=5.01%, 500=0.10%, 1000=0.03% cpu : usr=0.06%, sys=6.03%, ctx=6462, 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=145060: Fri Aug 21 09:06:45 2026 read: IOPS=13, BW=52.4KiB/s (53.6kB/s)(6052KiB/115526msec) clat (usec): min=32, max=181018, avg=35696.53, stdev=27707.38 lat (usec): min=33, max=181020, avg=35700.90, stdev=27703.69 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 55], 10.00th=[ 70], 20.00th=[ 15926], | 30.00th=[ 20841], 40.00th=[ 25560], 50.00th=[ 30540], 60.00th=[ 36439], | 70.00th=[ 43779], 80.00th=[ 53740], 90.00th=[ 71828], 95.00th=[ 86508], | 99.00th=[133694], 99.50th=[160433], 99.90th=[179307], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 7, max= 125, per=25.55%, avg=52.88, stdev=21.42, samples=224 iops : min= 1, max= 31, avg=12.59, stdev= 5.40, samples=224 write: IOPS=13, BW=53.0KiB/s (55.3kB/s)(6236KiB/115526msec); 0 zone resets clat (usec): min=1116, max=1205.5k, avg=39189.84, stdev=49413.57 lat (usec): min=1117, max=1205.5k, avg=39192.67, stdev=49412.53 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1385], 10.00th=[ 2114], | 20.00th=[ 4817], 30.00th=[ 9503], 40.00th=[ 18744], | 50.00th=[ 28181], 60.00th=[ 39060], 70.00th=[ 50070], | 80.00th=[ 64750], 90.00th=[ 89654], 95.00th=[ 113771], | 99.00th=[ 173016], 99.50th=[ 189793], 99.90th=[ 392168], | 99.95th=[1199571], 99.99th=[1199571] bw ( KiB/s): min= 7, max= 119, per=25.07%, avg=54.16, stdev=21.53, samples=225 iops : min= 1, max= 29, avg=12.92, stdev= 5.41, samples=225 lat (usec) : 50=1.07%, 100=4.69%, 250=0.33%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=4.92%, 4=4.07%, 10=7.49%, 20=12.08%, 50=38.22% lat (msec) : 100=22.17%, 250=4.59%, 500=0.10%, 2000=0.03% cpu : usr=0.07%, sys=5.78%, ctx=6369, 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=207KiB/s (212kB/s), 51.3KiB/s-52.9KiB/s (52.6kB/s-54.2kB/s), io=23.4MiB (24.6MB), run=113933-115854msec WRITE: bw=217KiB/s (222kB/s), 53.0KiB/s-54.9KiB/s (55.3kB/s-56.3kB/s), io=24.6MiB (25.7MB), run=113933-115854msec fio: pid=145053, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=145053: Fri Aug 21 09:08:37 2026 read: IOPS=6, BW=24.5KiB/s (25.1kB/s)(4756KiB/194177msec) clat (msec): min=4, max=987, avg=33.90, stdev=43.07 lat (msec): min=4, max=987, avg=33.90, stdev=43.07 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 48], 90.00th=[ 77], 95.00th=[ 105], | 99.00th=[ 159], 99.50th=[ 192], 99.90th=[ 405], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 95, per=26.74%, avg=26.47, stdev=18.60, samples=346 iops : min= 1, max= 23, avg= 6.00, stdev= 4.68, samples=346 write: IOPS=6, BW=25.2KiB/s (25.8kB/s)(4892KiB/194177msec); 0 zone resets clat (msec): min=37, max=586, avg=125.47, stdev=63.65 lat (msec): min=37, max=586, avg=125.47, stdev=63.65 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 77], | 30.00th=[ 85], 40.00th=[ 96], 50.00th=[ 109], 60.00th=[ 126], | 70.00th=[ 142], 80.00th=[ 171], 90.00th=[ 211], 95.00th=[ 245], | 99.00th=[ 342], 99.50th=[ 384], 99.90th=[ 550], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 56, per=24.05%, avg=25.01, stdev=11.96, samples=378 iops : min= 1, max= 14, avg= 5.63, stdev= 3.05, samples=378 lat (msec) : 10=5.59%, 20=17.41%, 50=18.28%, 100=27.77%, 250=28.47% lat (msec) : 500=2.28%, 750=0.12%, 1000=0.04% cpu : usr=0.04%, sys=1.45%, ctx=4175, majf=0, minf=19 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=1190,1223,0,0 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=145054: Fri Aug 21 09:08:37 2026 read: IOPS=6, BW=26.1KiB/s (26.7kB/s)(5940KiB/227805msec) clat (msec): min=4, max=976, avg=30.24, stdev=40.06 lat (msec): min=4, max=976, avg=30.24, stdev=40.06 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 40], 90.00th=[ 67], 95.00th=[ 94], | 99.00th=[ 150], 99.50th=[ 167], 99.90th=[ 393], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 111, per=28.82%, avg=28.53, stdev=19.93, samples=404 iops : min= 1, max= 27, avg= 6.53, stdev= 5.02, samples=404 write: IOPS=6, BW=27.9KiB/s (28.5kB/s)(6348KiB/227805msec); 0 zone resets clat (msec): min=32, max=580, avg=115.00, stdev=58.51 lat (msec): min=32, max=580, avg=115.01, stdev=58.51 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 52], 10.00th=[ 59], 20.00th=[ 70], | 30.00th=[ 80], 40.00th=[ 89], 50.00th=[ 101], 60.00th=[ 112], | 70.00th=[ 128], 80.00th=[ 155], 90.00th=[ 194], 95.00th=[ 230], | 99.00th=[ 305], 99.50th=[ 342], 99.90th=[ 550], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 64, per=26.43%, avg=27.49, stdev=12.81, samples=447 iops : min= 1, max= 16, avg= 6.26, stdev= 3.27, samples=447 lat (msec) : 10=7.13%, 20=19.60%, 50=16.11%, 100=29.43%, 250=25.85% lat (msec) : 500=1.79%, 750=0.07%, 1000=0.03% cpu : usr=0.04%, sys=1.46%, ctx=5448, 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=145055: Fri Aug 21 09:08:37 2026 read: IOPS=6, BW=26.4KiB/s (27.1kB/s)(6028KiB/227968msec) clat (msec): min=5, max=403, avg=30.55, stdev=30.93 lat (msec): min=5, max=403, avg=30.55, stdev=30.93 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 46], 90.00th=[ 71], 95.00th=[ 89], | 99.00th=[ 150], 99.50th=[ 161], 99.90th=[ 279], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 7, max= 103, per=28.40%, avg=28.12, stdev=19.27, samples=415 iops : min= 1, max= 25, avg= 6.42, stdev= 4.86, samples=415 write: IOPS=6, BW=27.5KiB/s (28.1kB/s)(6260KiB/227968msec); 0 zone resets clat (msec): min=32, max=1105, avg=115.99, stdev=64.23 lat (msec): min=32, max=1105, avg=116.00, stdev=64.23 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 53], 10.00th=[ 59], 20.00th=[ 70], | 30.00th=[ 80], 40.00th=[ 88], 50.00th=[ 99], 60.00th=[ 113], | 70.00th=[ 129], 80.00th=[ 155], 90.00th=[ 197], 95.00th=[ 236], | 99.00th=[ 313], 99.50th=[ 347], 99.90th=[ 542], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 56, per=25.97%, avg=27.01, stdev=13.16, samples=448 iops : min= 1, max= 14, avg= 6.14, stdev= 3.37, samples=448 lat (msec) : 10=7.26%, 20=18.88%, 50=16.02%, 100=31.45%, 250=24.38% lat (msec) : 500=1.95%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.47%, ctx=5373, 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=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=145056: Fri Aug 21 09:08:37 2026 read: IOPS=6, BW=26.8KiB/s (27.4kB/s)(6052KiB/225811msec) clat (msec): min=5, max=331, avg=29.69, stdev=30.63 lat (msec): min=5, max=331, avg=29.69, stdev=30.63 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 41], 90.00th=[ 70], 95.00th=[ 93], | 99.00th=[ 140], 99.50th=[ 155], 99.90th=[ 275], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 7, max= 120, per=29.47%, avg=29.18, stdev=20.21, samples=403 iops : min= 1, max= 30, avg= 6.68, stdev= 5.12, samples=403 write: IOPS=6, BW=27.6KiB/s (28.3kB/s)(6236KiB/225811msec); 0 zone resets clat (msec): min=26, max=1206, avg=115.78, stdev=64.47 lat (msec): min=26, max=1206, avg=115.78, stdev=64.47 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 52], 10.00th=[ 59], 20.00th=[ 70], | 30.00th=[ 79], 40.00th=[ 88], 50.00th=[ 99], 60.00th=[ 111], | 70.00th=[ 132], 80.00th=[ 155], 90.00th=[ 192], 95.00th=[ 230], | 99.00th=[ 309], 99.50th=[ 338], 99.90th=[ 510], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 56, per=26.15%, avg=27.20, stdev=12.86, samples=444 iops : min= 1, max= 14, avg= 6.18, stdev= 3.28, samples=444 lat (msec) : 10=7.10%, 20=19.92%, 50=16.21%, 100=30.34%, 250=24.54% lat (msec) : 500=1.82%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.50%, ctx=5509, 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=99.9KiB/s (102kB/s), 24.5KiB/s-26.8KiB/s (25.1kB/s-27.4kB/s), io=22.2MiB (23.3MB), run=194177-227968msec WRITE: bw=104KiB/s (107kB/s), 25.2KiB/s-27.9KiB/s (25.8kB/s-28.5kB/s), io=23.2MiB (24.3MB), run=194177-227968msec 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=145107: Fri Aug 21 09:09:10 2026 read: IOPS=15, BW=252KiB/s (258kB/s)(5920KiB/23460msec) clat (usec): min=37, max=179480, avg=32905.38, stdev=25297.94 lat (usec): min=37, max=179480, avg=32906.45, stdev=25297.94 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 14222], | 30.00th=[ 20317], 40.00th=[ 24249], 50.00th=[ 29754], 60.00th=[ 35390], | 70.00th=[ 42206], 80.00th=[ 49546], 90.00th=[ 63701], 95.00th=[ 76022], | 99.00th=[106431], 99.50th=[143655], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 120, max= 542, per=25.73%, avg=252.46, stdev=91.79, samples=46 iops : min= 7, max= 33, avg=15.11, stdev= 5.74, samples=46 write: IOPS=16, BW=271KiB/s (278kB/s)(6368KiB/23460msec); 0 zone resets clat (usec): min=1439, max=195122, avg=27467.06, stdev=27349.07 lat (usec): min=1440, max=195124, avg=27474.63, stdev=27344.52 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2311], 10.00th=[ 3294], 20.00th=[ 5145], | 30.00th=[ 7635], 40.00th=[ 12256], 50.00th=[ 20317], 60.00th=[ 27395], | 70.00th=[ 33424], 80.00th=[ 44303], 90.00th=[ 64226], 95.00th=[ 80217], | 99.00th=[137364], 99.50th=[143655], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 95, max= 444, per=26.26%, avg=271.00, stdev=90.50, samples=46 iops : min= 5, max= 27, avg=16.28, stdev= 5.72, samples=46 lat (usec) : 50=0.91%, 100=6.38%, 250=0.26%, 500=0.13% lat (msec) : 2=2.34%, 4=4.69%, 10=12.63%, 20=12.24%, 50=43.23% lat (msec) : 100=15.10%, 250=2.08% cpu : usr=0.08%, sys=7.35%, ctx=1587, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145108: Fri Aug 21 09:09:10 2026 read: IOPS=14, BW=235KiB/s (241kB/s)(5744KiB/24398msec) clat (usec): min=36, max=149671, avg=35047.92, stdev=26939.14 lat (usec): min=36, max=149671, avg=35049.00, stdev=26939.15 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 16057], | 30.00th=[ 20841], 40.00th=[ 26084], 50.00th=[ 32113], 60.00th=[ 36439], | 70.00th=[ 43254], 80.00th=[ 53216], 90.00th=[ 66323], 95.00th=[ 84411], | 99.00th=[139461], 99.50th=[141558], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 27, max= 445, per=24.59%, avg=241.26, stdev=95.40, samples=47 iops : min= 1, max= 27, avg=14.40, stdev= 5.98, samples=47 write: IOPS=16, BW=268KiB/s (275kB/s)(6544KiB/24398msec); 0 zone resets clat (usec): min=1584, max=204393, avg=28134.64, stdev=33795.14 lat (usec): min=1586, max=204395, avg=28137.43, stdev=33794.63 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2212], 10.00th=[ 3228], 20.00th=[ 5080], | 30.00th=[ 7111], 40.00th=[ 10290], 50.00th=[ 15926], 60.00th=[ 21890], | 70.00th=[ 30016], 80.00th=[ 44827], 90.00th=[ 65799], 95.00th=[ 96994], | 99.00th=[170918], 99.50th=[196084], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 27, max= 539, per=26.03%, avg=268.67, stdev=121.67, samples=48 iops : min= 1, max= 33, avg=16.13, stdev= 7.58, samples=48 lat (usec) : 50=1.04%, 100=5.47%, 250=0.52%, 500=0.13% lat (msec) : 2=1.95%, 4=5.60%, 10=14.06%, 20=13.80%, 50=38.02% lat (msec) : 100=15.49%, 250=3.91% cpu : usr=0.11%, sys=7.22%, ctx=1574, 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=145110: Fri Aug 21 09:09:10 2026 read: IOPS=16, BW=270KiB/s (277kB/s)(6256KiB/23134msec) clat (usec): min=33, max=128476, avg=32003.79, stdev=24591.79 lat (usec): min=33, max=128477, avg=32011.10, stdev=24596.22 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 1123], | 30.00th=[ 19792], 40.00th=[ 24773], 50.00th=[ 30802], 60.00th=[ 35390], | 70.00th=[ 41157], 80.00th=[ 49021], 90.00th=[ 63701], 95.00th=[ 77071], | 99.00th=[106431], 99.50th=[125305], 99.90th=[128451], 99.95th=[128451], | 99.99th=[128451] bw ( KiB/s): min= 95, max= 574, per=27.66%, avg=271.36, stdev=101.62, samples=45 iops : min= 5, max= 35, avg=16.31, stdev= 6.39, samples=45 write: IOPS=16, BW=261KiB/s (267kB/s)(6032KiB/23134msec); 0 zone resets clat (usec): min=1565, max=161677, avg=27356.38, stdev=29910.95 lat (usec): min=1567, max=161679, avg=27361.68, stdev=29908.64 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1958], 10.00th=[ 2737], 20.00th=[ 5080], | 30.00th=[ 7242], 40.00th=[ 9896], 50.00th=[ 15401], 60.00th=[ 23987], | 70.00th=[ 32637], 80.00th=[ 46400], 90.00th=[ 64750], 95.00th=[ 89654], | 99.00th=[141558], 99.50th=[160433], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 90, max= 437, per=24.95%, avg=257.51, stdev=90.79, samples=45 iops : min= 5, max= 27, avg=15.44, stdev= 5.64, samples=45 lat (usec) : 50=1.04%, 100=7.81%, 250=0.52%, 500=0.26%, 1000=0.52% lat (msec) : 2=3.12%, 4=4.30%, 10=12.63%, 20=12.24%, 50=39.06% lat (msec) : 100=15.76%, 250=2.73% cpu : usr=0.08%, sys=7.25%, ctx=1529, 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=145112: Fri Aug 21 09:09:10 2026 read: IOPS=16, BW=261KiB/s (267kB/s)(6032KiB/23155msec) clat (usec): min=38, max=273618, avg=33317.57, stdev=31357.84 lat (usec): min=39, max=273619, avg=33336.91, stdev=31353.76 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 174], | 30.00th=[ 19530], 40.00th=[ 25297], 50.00th=[ 29754], 60.00th=[ 33817], | 70.00th=[ 40109], 80.00th=[ 50070], 90.00th=[ 64226], 95.00th=[ 82314], | 99.00th=[160433], 99.50th=[219153], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 31, max= 416, per=26.56%, avg=260.60, stdev=92.53, samples=45 iops : min= 1, max= 26, avg=15.60, stdev= 5.79, samples=45 write: IOPS=16, BW=270KiB/s (277kB/s)(6256KiB/23155msec); 0 zone resets clat (usec): min=1526, max=211532, avg=26924.16, stdev=31101.17 lat (usec): min=1528, max=211534, avg=26933.95, stdev=31100.52 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1860], 10.00th=[ 2573], 20.00th=[ 3785], | 30.00th=[ 5604], 40.00th=[ 9241], 50.00th=[ 14222], 60.00th=[ 24249], | 70.00th=[ 32637], 80.00th=[ 47973], 90.00th=[ 64750], 95.00th=[ 83362], | 99.00th=[143655], 99.50th=[185598], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 95, max= 479, per=26.39%, avg=272.31, stdev=75.67, samples=45 iops : min= 5, max= 29, avg=16.36, stdev= 4.75, samples=45 lat (usec) : 50=1.43%, 100=7.55%, 250=1.04%, 500=0.39% lat (msec) : 2=3.26%, 4=7.81%, 10=10.81%, 20=11.07%, 50=37.11% lat (msec) : 100=16.28%, 250=3.12%, 500=0.13% cpu : usr=0.07%, sys=7.53%, ctx=1533, 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=982KiB/s (1005kB/s), 235KiB/s-270KiB/s (241kB/s-277kB/s), io=23.4MiB (24.5MB), run=23134-24398msec WRITE: bw=1033KiB/s (1058kB/s), 261KiB/s-271KiB/s (267kB/s-278kB/s), io=24.6MiB (25.8MB), run=23134-24398msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145109: Fri Aug 21 09:09:42 2026 read: IOPS=6, BW=106KiB/s (109kB/s)(5920KiB/55807msec) clat (msec): min=7, max=316, avg=32.10, stdev=35.09 lat (msec): min=7, max=316, avg=32.10, stdev=35.09 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 40], 90.00th=[ 64], 95.00th=[ 99], | 99.00th=[ 184], 99.50th=[ 251], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 31, max= 414, per=26.35%, avg=111.18, stdev=64.82, samples=104 iops : min= 1, max= 25, avg= 6.25, stdev= 4.09, samples=104 write: IOPS=7, BW=114KiB/s (117kB/s)(6368KiB/55807msec); 0 zone resets clat (msec): min=37, max=356, avg=110.21, stdev=45.94 lat (msec): min=37, max=356, avg=110.22, stdev=45.94 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 66], 20.00th=[ 78], | 30.00th=[ 86], 40.00th=[ 91], 50.00th=[ 101], 60.00th=[ 110], | 70.00th=[ 123], 80.00th=[ 134], 90.00th=[ 159], 95.00th=[ 197], | 99.00th=[ 296], 99.50th=[ 334], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 27, max= 192, per=25.59%, avg=113.60, stdev=46.35, samples=110 iops : min= 1, max= 12, avg= 6.40, stdev= 2.98, samples=110 lat (msec) : 10=2.99%, 20=19.66%, 50=19.66%, 100=29.56%, 250=26.43% lat (msec) : 500=1.69% cpu : usr=0.04%, sys=1.62%, ctx=1397, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145111: Fri Aug 21 09:09:42 2026 read: IOPS=6, BW=101KiB/s (104kB/s)(5744KiB/56722msec) clat (msec): min=5, max=261, avg=31.30, stdev=32.06 lat (msec): min=5, max=261, avg=31.30, stdev=32.06 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 28], 80.00th=[ 42], 90.00th=[ 71], 95.00th=[ 102], | 99.00th=[ 163], 99.50th=[ 213], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 28, max= 287, per=27.14%, avg=114.55, stdev=69.24, samples=98 iops : min= 1, max= 17, avg= 6.45, stdev= 4.36, samples=98 write: IOPS=7, BW=115KiB/s (118kB/s)(6544KiB/56722msec); 0 zone resets clat (msec): min=31, max=329, avg=110.61, stdev=51.58 lat (msec): min=31, max=329, avg=110.61, stdev=51.58 clat percentiles (msec): | 1.00th=[ 38], 5.00th=[ 47], 10.00th=[ 59], 20.00th=[ 72], | 30.00th=[ 82], 40.00th=[ 89], 50.00th=[ 99], 60.00th=[ 114], | 70.00th=[ 126], 80.00th=[ 142], 90.00th=[ 171], 95.00th=[ 209], | 99.00th=[ 300], 99.50th=[ 321], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 28, max= 287, per=25.71%, avg=114.16, stdev=49.17, samples=112 iops : min= 1, max= 17, avg= 6.43, stdev= 3.14, samples=112 lat (msec) : 10=3.39%, 20=20.31%, 50=19.79%, 100=28.39%, 250=26.17% lat (msec) : 500=1.95% cpu : usr=0.03%, sys=1.72%, ctx=1395, 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=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=145113: Fri Aug 21 09:09:42 2026 read: IOPS=7, BW=113KiB/s (115kB/s)(6256KiB/55567msec) clat (msec): min=6, max=254, avg=30.01, stdev=28.21 lat (msec): min=6, max=254, avg=30.01, stdev=28.21 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 37], 90.00th=[ 65], 95.00th=[ 93], | 99.00th=[ 129], 99.50th=[ 165], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 31, max= 320, per=28.56%, avg=120.52, stdev=76.98, samples=103 iops : min= 1, max= 20, avg= 6.83, stdev= 4.92, samples=103 write: IOPS=6, BW=109KiB/s (111kB/s)(6032KiB/55567msec); 0 zone resets clat (msec): min=38, max=398, avg=115.24, stdev=52.16 lat (msec): min=38, max=398, avg=115.24, stdev=52.16 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 78], | 30.00th=[ 88], 40.00th=[ 97], 50.00th=[ 104], 60.00th=[ 113], | 70.00th=[ 123], 80.00th=[ 142], 90.00th=[ 174], 95.00th=[ 215], | 99.00th=[ 342], 99.50th=[ 372], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 31, max= 221, per=24.51%, avg=108.83, stdev=39.18, samples=109 iops : min= 1, max= 13, avg= 6.10, stdev= 2.53, samples=109 lat (msec) : 10=3.52%, 20=22.53%, 50=18.23%, 100=26.56%, 250=27.73% lat (msec) : 500=1.43% cpu : usr=0.03%, sys=1.64%, ctx=1349, 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=145114: Fri Aug 21 09:09:42 2026 read: IOPS=6, BW=109KiB/s (111kB/s)(6032KiB/55479msec) clat (msec): min=6, max=249, avg=31.37, stdev=33.43 lat (msec): min=6, max=249, avg=31.37, stdev=33.43 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 34], 90.00th=[ 62], 95.00th=[ 112], | 99.00th=[ 169], 99.50th=[ 213], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 31, max= 320, per=26.98%, avg=113.85, stdev=68.75, samples=104 iops : min= 1, max= 20, avg= 6.41, stdev= 4.35, samples=104 write: IOPS=7, BW=113KiB/s (115kB/s)(6256KiB/55479msec); 0 zone resets clat (msec): min=35, max=335, avg=110.72, stdev=45.43 lat (msec): min=35, max=335, avg=110.72, stdev=45.43 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 67], 20.00th=[ 77], | 30.00th=[ 85], 40.00th=[ 93], 50.00th=[ 101], 60.00th=[ 111], | 70.00th=[ 122], 80.00th=[ 138], 90.00th=[ 163], 95.00th=[ 201], | 99.00th=[ 284], 99.50th=[ 305], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 28, max= 192, per=25.32%, avg=112.44, stdev=45.94, samples=110 iops : min= 1, max= 12, avg= 6.33, stdev= 2.94, samples=110 lat (msec) : 10=2.47%, 20=21.22%, 50=20.05%, 100=27.86%, 250=27.21% lat (msec) : 500=1.17% cpu : usr=0.04%, sys=1.66%, ctx=1385, 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=422KiB/s (432kB/s), 101KiB/s-113KiB/s (104kB/s-115kB/s), io=23.4MiB (24.5MB), run=55479-56722msec WRITE: bw=444KiB/s (455kB/s), 109KiB/s-115KiB/s (111kB/s-118kB/s), io=24.6MiB (25.8MB), run=55479-56722msec 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=145135: Fri Aug 21 09:09:53 2026 read: IOPS=1, BW=2046KiB/s (2095kB/s)(7168KiB/3503msec) clat (usec): min=426, max=347885, avg=193421.66, stdev=113852.29 lat (usec): min=427, max=347886, avg=193423.07, stdev=113852.23 clat percentiles (usec): | 1.00th=[ 429], 5.00th=[ 429], 10.00th=[ 429], 20.00th=[120062], | 30.00th=[156238], 40.00th=[156238], 50.00th=[204473], 60.00th=[244319], | 70.00th=[244319], 80.00th=[278922], 90.00th=[346031], 95.00th=[346031], | 99.00th=[346031], 99.50th=[346031], 99.90th=[346031], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 1957, max= 4055, per=46.77%, avg=2407.00, stdev=921.78, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1462KiB/s (1497kB/s)(5120KiB/3503msec); 0 zone resets clat (msec): min=136, max=808, avg=351.48, stdev=268.12 lat (msec): min=136, max=808, avg=351.58, stdev=268.17 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1973, max= 4096, per=37.47%, avg=2700.00, stdev=1209.32, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=50.00%, 500=33.33%, 1000=8.33% cpu : usr=0.00%, sys=18.25%, ctx=181, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145136: Fri Aug 21 09:09:53 2026 read: IOPS=0, BW=515KiB/s (527kB/s)(2048KiB/3979msec) clat (msec): min=3, max=240, avg=122.00, stdev=167.15 lat (msec): min=3, max=240, avg=122.00, stdev=167.15 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 4], | 30.00th=[ 4], 40.00th=[ 4], 50.00th=[ 4], 60.00th=[ 241], | 70.00th=[ 241], 80.00th=[ 241], 90.00th=[ 241], 95.00th=[ 241], | 99.00th=[ 241], 99.50th=[ 241], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 2019, max= 2043, per=39.46%, avg=2031.00, stdev=16.97, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2574KiB/s (2635kB/s)(10.0MiB/3979msec); 0 zone resets clat (msec): min=75, max=974, avg=365.76, stdev=305.31 lat (msec): min=75, max=975, avg=365.97, stdev=305.56 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 108], | 30.00th=[ 148], 40.00th=[ 201], 50.00th=[ 279], 60.00th=[ 317], | 70.00th=[ 338], 80.00th=[ 368], 90.00th=[ 852], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 1973, max= 6059, per=55.32%, avg=3986.00, stdev=1670.75, samples=4 iops : min= 1, max= 5, avg= 3.00, stdev= 1.63, samples=4 lat (msec) : 4=8.33%, 100=8.33%, 250=33.33%, 500=33.33%, 1000=16.67% cpu : usr=0.00%, sys=19.26%, ctx=187, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145137: Fri Aug 21 09:09:53 2026 read: IOPS=1, BW=1795KiB/s (1839kB/s)(6144KiB/3422msec) clat (usec): min=543, max=202037, avg=59362.91, stdev=91525.46 lat (usec): min=544, max=202038, avg=59364.06, stdev=91525.31 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 963], | 30.00th=[ 963], 40.00th=[ 1467], 50.00th=[ 1467], 60.00th=[ 2180], | 70.00th=[149947], 80.00th=[149947], 90.00th=[202376], 95.00th=[202376], | 99.00th=[202376], 99.50th=[202376], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 4039, max= 4096, per=79.03%, avg=4067.50, stdev=40.31, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1795KiB/s (1839kB/s)(6144KiB/3422msec); 0 zone resets clat (msec): min=187, max=655, avg=451.86, stdev=183.93 lat (msec): min=187, max=655, avg=451.92, stdev=183.95 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 262], | 30.00th=[ 262], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 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= 1973, max= 2048, per=27.99%, avg=2016.75, stdev=31.63, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 2=8.33%, 4=8.33%, 250=25.00%, 500=8.33%, 750=33.33% cpu : usr=0.00%, sys=16.95%, ctx=150, 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=145138: Fri Aug 21 09:09:53 2026 read: IOPS=1, BW=1332KiB/s (1364kB/s)(5120KiB/3843msec) clat (usec): min=661, max=328492, avg=100135.46, stdev=146921.43 lat (usec): min=663, max=328493, avg=100136.66, stdev=146921.47 clat percentiles (usec): | 1.00th=[ 660], 5.00th=[ 660], 10.00th=[ 660], 20.00th=[ 660], | 30.00th=[ 1172], 40.00th=[ 1172], 50.00th=[ 1336], 60.00th=[ 1336], | 70.00th=[168821], 80.00th=[168821], 90.00th=[329253], 95.00th=[329253], | 99.00th=[329253], 99.50th=[329253], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 2019, max= 6059, per=78.47%, avg=4039.00, stdev=2856.71, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1865KiB/s (1910kB/s)(7168KiB/3843msec); 0 zone resets clat (msec): min=165, max=750, avg=435.02, stdev=178.76 lat (msec): min=165, max=751, avg=435.15, stdev=178.84 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 313], | 30.00th=[ 418], 40.00th=[ 418], 50.00th=[ 447], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 489], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1420, max= 3893, per=31.53%, avg=2271.80, stdev=942.31, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=8.33% lat (msec) : 2=16.67%, 250=16.67%, 500=50.00%, 1000=8.33% cpu : usr=0.00%, sys=17.96%, ctx=287, 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=5147KiB/s (5271kB/s), 515KiB/s-2046KiB/s (527kB/s-2095kB/s), io=20.0MiB (20.0MB), run=3422-3979msec WRITE: bw=7206KiB/s (7379kB/s), 1462KiB/s-2574KiB/s (1497kB/s-2635kB/s), io=28.0MiB (29.4MB), run=3422-3979msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145131: Fri Aug 21 09:09:53 2026 read: IOPS=2, BW=2336KiB/s (2392kB/s)(7168KiB/3068msec) clat (msec): min=79, max=255, avg=145.50, stdev=62.51 lat (msec): min=79, max=255, avg=145.50, stdev=62.51 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 103], | 30.00th=[ 115], 40.00th=[ 115], 50.00th=[ 123], 60.00th=[ 140], | 70.00th=[ 140], 80.00th=[ 207], 90.00th=[ 255], 95.00th=[ 255], | 99.00th=[ 255], 99.50th=[ 255], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 2015, max= 5678, per=88.18%, avg=3926.67, stdev=1836.76, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1669KiB/s (1709kB/s)(5120KiB/3068msec); 0 zone resets clat (msec): min=169, max=687, avg=376.39, stdev=197.79 lat (msec): min=169, max=687, avg=376.47, stdev=197.79 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 384], 60.00th=[ 384], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 2015, max= 2043, per=32.60%, avg=2032.00, stdev=11.94, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=25.00%, 750=8.33% cpu : usr=0.03%, sys=5.15%, ctx=80, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145132: Fri Aug 21 09:09:53 2026 read: IOPS=0, BW=445KiB/s (456kB/s)(2048KiB/4599msec) clat (msec): min=143, max=335, avg=239.58, stdev=135.83 lat (msec): min=143, max=335, avg=239.58, stdev=135.83 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 1921, max= 1973, per=43.72%, avg=1947.00, stdev=36.77, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2227KiB/s (2280kB/s)(10.0MiB/4599msec); 0 zone resets clat (msec): min=208, max=869, avg=408.58, stdev=241.23 lat (msec): min=208, max=869, avg=408.65, stdev=241.23 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 224], | 30.00th=[ 259], 40.00th=[ 264], 50.00th=[ 264], 60.00th=[ 317], | 70.00th=[ 384], 80.00th=[ 498], 90.00th=[ 802], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 1889, max= 4096, per=36.58%, avg=2280.57, stdev=802.51, samples=7 iops : min= 1, max= 4, avg= 1.43, stdev= 1.13, samples=7 lat (msec) : 250=25.00%, 500=58.33%, 1000=16.67% cpu : usr=0.04%, sys=7.79%, ctx=155, 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=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=145133: Fri Aug 21 09:09:53 2026 read: IOPS=1, BW=1351KiB/s (1383kB/s)(6144KiB/4549msec) clat (msec): min=68, max=862, avg=298.28, stdev=295.94 lat (msec): min=68, max=862, avg=298.28, stdev=295.94 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 91], | 30.00th=[ 91], 40.00th=[ 174], 50.00th=[ 174], 60.00th=[ 236], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1921, max= 2048, per=45.02%, avg=2004.75, stdev=57.46, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 write: IOPS=1, BW=1351KiB/s (1383kB/s)(6144KiB/4549msec); 0 zone resets clat (msec): min=127, max=651, avg=410.27, stdev=186.04 lat (msec): min=127, max=651, avg=410.37, stdev=186.07 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 401], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 1921, max= 2043, per=32.22%, avg=2008.50, stdev=58.46, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.04%, sys=4.60%, ctx=76, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145134: Fri Aug 21 09:09:53 2026 read: IOPS=1, BW=1158KiB/s (1186kB/s)(5120KiB/4420msec) clat (msec): min=54, max=572, avg=300.56, stdev=234.64 lat (msec): min=54, max=572, avg=300.56, stdev=234.64 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 55], | 30.00th=[ 102], 40.00th=[ 102], 50.00th=[ 264], 60.00th=[ 264], | 70.00th=[ 514], 80.00th=[ 514], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1889, max= 4096, per=59.88%, avg=2666.67, stdev=1239.44, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1622KiB/s (1661kB/s)(7168KiB/4420msec); 0 zone resets clat (msec): min=106, max=662, avg=370.06, stdev=202.12 lat (msec): min=106, max=662, avg=370.14, stdev=202.13 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 167], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 338], 60.00th=[ 502], | 70.00th=[ 502], 80.00th=[ 527], 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= 2015, max= 2048, per=32.65%, avg=2035.20, stdev=12.58, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=41.67% cpu : usr=0.00%, sys=6.61%, ctx=118, 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=4453KiB/s (4560kB/s), 445KiB/s-2336KiB/s (456kB/s-2392kB/s), io=20.0MiB (20.0MB), run=3068-4599msec WRITE: bw=6234KiB/s (6384kB/s), 1351KiB/s-2227KiB/s (1383kB/s-2280kB/s), io=28.0MiB (29.4MB), run=3068-4599msec 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=145144: Fri Aug 21 09:10:04 2026 read: IOPS=1, BW=6370KiB/s (6523kB/s)(12.0MiB/1929msec) clat (msec): min=522, max=689, avg=627.59, stdev=91.73 lat (msec): min=522, max=689, avg=627.59, stdev=91.73 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 6511, max= 8143, per=100.00%, avg=7327.00, stdev=1154.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=21.25%, ctx=446, 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=145145: Fri Aug 21 09:10:04 2026 read: IOPS=0, BW=1474KiB/s (1510kB/s)(4096KiB/2778msec) clat (nsec): min=529254k, max=529254k, avg=529253784.00, stdev= 0.00 lat (nsec): min=529256k, max=529256k, avg=529256155.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 531], 5.00th=[ 531], 10.00th=[ 531], 20.00th=[ 531], | 30.00th=[ 531], 40.00th=[ 531], 50.00th=[ 531], 60.00th=[ 531], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 6282, max= 6282, per=100.00%, avg=6282.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2949KiB/s (3020kB/s)(8192KiB/2778msec); 0 zone resets clat (msec): min=791, max=1392, avg=1092.20, stdev=425.39 lat (msec): min=791, max=1393, avg=1092.54, stdev=425.47 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=[ 1401], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8143, max= 8143, per=69.04%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.47%, ctx=70, 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=145146: Fri Aug 21 09:10:04 2026 write: IOPS=1, BW=4892KiB/s (5009kB/s)(12.0MiB/2512msec); 0 zone resets clat (msec): min=647, max=936, avg=815.07, stdev=150.20 lat (msec): min=647, max=937, avg=815.48, stdev=150.32 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7937, max= 8031, per=67.69%, avg=7984.00, stdev=66.47, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.08%, sys=6.77%, ctx=63, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145147: Fri Aug 21 09:10:04 2026 write: IOPS=1, BW=7018KiB/s (7186kB/s)(12.0MiB/1751msec); 0 zone resets clat (msec): min=302, max=813, avg=564.22, stdev=256.09 lat (msec): min=305, max=814, avg=565.60, stdev=254.43 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7937, max= 8143, per=68.16%, avg=8040.00, stdev=145.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=10.40%, ctx=102, 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=5898KiB/s (6039kB/s), 1474KiB/s-6370KiB/s (1510kB/s-6523kB/s), io=16.0MiB (16.8MB), run=1929-2778msec WRITE: bw=11.5MiB/s (12.1MB/s), 2949KiB/s-7018KiB/s (3020kB/s-7186kB/s), io=32.0MiB (33.6MB), run=1751-2778msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145149: Fri Aug 21 09:10:04 2026 read: IOPS=1, BW=5260KiB/s (5387kB/s)(12.0MiB/2336msec) clat (msec): min=317, max=1134, avg=778.36, stdev=418.16 lat (msec): min=317, max=1134, avg=778.37, stdev=418.16 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 8143, max= 8175, per=100.00%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.10%, ctx=51, 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=145150: Fri Aug 21 09:10:04 2026 read: IOPS=0, BW=1437KiB/s (1472kB/s)(4096KiB/2850msec) clat (nsec): min=735188k, max=735188k, avg=735188358.00, stdev= 0.00 lat (nsec): min=735191k, max=735191k, avg=735190856.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 735], 5.00th=[ 735], 10.00th=[ 735], 20.00th=[ 735], | 30.00th=[ 735], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2874KiB/s (2943kB/s)(8192KiB/2850msec); 0 zone resets clat (msec): min=1037, max=1065, avg=1051.47, stdev=19.23 lat (msec): min=1038, max=1065, avg=1051.70, stdev=19.14 clat percentiles (msec): | 1.00th=[ 1036], 5.00th=[ 1036], 10.00th=[ 1036], 20.00th=[ 1036], | 30.00th=[ 1036], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1062], | 70.00th=[ 1062], 80.00th=[ 1062], 90.00th=[ 1062], 95.00th=[ 1062], | 99.00th=[ 1062], 99.50th=[ 1062], 99.90th=[ 1062], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 8175, max= 8175, per=71.11%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=6.04%, ctx=79, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145151: Fri Aug 21 09:10:04 2026 write: IOPS=1, BW=4514KiB/s (4623kB/s)(12.0MiB/2722msec); 0 zone resets clat (msec): min=289, max=1400, avg=898.69, stdev=563.42 lat (msec): min=289, max=1401, avg=899.09, stdev=563.47 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8143, max= 8175, per=70.97%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.07%, sys=4.81%, ctx=41, 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=145152: Fri Aug 21 09:10:04 2026 write: IOPS=1, BW=6101KiB/s (6248kB/s)(12.0MiB/2014msec); 0 zone resets clat (msec): min=350, max=1200, avg=670.55, stdev=461.90 lat (msec): min=350, max=1200, avg=670.93, stdev=461.99 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 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= 7515, max= 7515, per=65.36%, avg=7515.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.41%, ctx=42, 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=5749KiB/s (5887kB/s), 1437KiB/s-5260KiB/s (1472kB/s-5387kB/s), io=16.0MiB (16.8MB), run=2336-2850msec WRITE: bw=11.2MiB/s (11.8MB/s), 2874KiB/s-6101KiB/s (2943kB/s-6248kB/s), io=32.0MiB (33.6MB), run=2014-2850msec