== sanity test 398b: DIO and buffer IO race ============== 17:51:43 (1787867503) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.00424 s, 7.2 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=179637: Thu Aug 27 17:54:22 2026 read: IOPS=10, BW=43.4KiB/s (44.4kB/s)(5992KiB/138130msec) clat (usec): min=44, max=252731, avg=50023.89, stdev=33774.44 lat (usec): min=45, max=252732, avg=50042.92, stdev=33778.19 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 3326], 10.00th=[ 16909], 20.00th=[ 24511], | 30.00th=[ 30540], 40.00th=[ 37487], 50.00th=[ 43254], 60.00th=[ 51119], | 70.00th=[ 60556], 80.00th=[ 70779], 90.00th=[ 89654], 95.00th=[110625], | 99.00th=[166724], 99.50th=[219153], 99.90th=[231736], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 7, max= 103, per=24.89%, avg=43.06, stdev=17.30, samples=270 iops : min= 1, max= 25, avg=10.10, stdev= 4.37, samples=270 write: IOPS=11, BW=45.6KiB/s (46.7kB/s)(6296KiB/138130msec); 0 zone resets clat (usec): min=1012, max=730097, avg=39835.03, stdev=45915.05 lat (usec): min=1013, max=730099, avg=39838.12, stdev=45914.32 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1270], 10.00th=[ 1893], 20.00th=[ 4146], | 30.00th=[ 7767], 40.00th=[ 17171], 50.00th=[ 26870], 60.00th=[ 37487], | 70.00th=[ 49546], 80.00th=[ 67634], 90.00th=[ 96994], 95.00th=[124257], | 99.00th=[196084], 99.50th=[214959], 99.90th=[329253], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 7, max= 112, per=24.98%, avg=45.46, stdev=21.60, samples=269 iops : min= 1, max= 28, avg=10.70, stdev= 5.46, samples=269 lat (usec) : 50=0.16%, 100=1.76%, 250=0.33%, 500=0.10%, 1000=0.03% lat (msec) : 2=5.60%, 4=4.52%, 10=7.00%, 20=8.66%, 50=36.49% lat (msec) : 100=27.25%, 250=7.91%, 500=0.16%, 750=0.03% cpu : usr=0.06%, sys=4.61%, ctx=6590, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179638: Thu Aug 27 17:54:22 2026 read: IOPS=10, BW=43.5KiB/s (44.5kB/s)(5940KiB/136576msec) clat (usec): min=42, max=757148, avg=50500.58, stdev=39088.32 lat (usec): min=42, max=757148, avg=50501.90, stdev=39088.36 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11994], 10.00th=[ 17957], 20.00th=[ 24773], | 30.00th=[ 30278], 40.00th=[ 36439], 50.00th=[ 42730], 60.00th=[ 49546], | 70.00th=[ 59507], 80.00th=[ 70779], 90.00th=[ 89654], 95.00th=[111674], | 99.00th=[183501], 99.50th=[206570], 99.90th=[375391], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 7, max= 96, per=25.12%, avg=43.46, stdev=17.73, samples=266 iops : min= 1, max= 24, avg=10.20, stdev= 4.47, samples=266 write: IOPS=11, BW=46.5KiB/s (47.6kB/s)(6348KiB/136576msec); 0 zone resets clat (usec): min=919, max=290274, avg=38471.68, stdev=39373.25 lat (usec): min=920, max=290275, avg=38484.56, stdev=39371.81 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1303], 10.00th=[ 1942], 20.00th=[ 4228], | 30.00th=[ 8586], 40.00th=[ 17957], 50.00th=[ 27919], 60.00th=[ 39060], | 70.00th=[ 50070], 80.00th=[ 65274], 90.00th=[ 91751], 95.00th=[114820], | 99.00th=[173016], 99.50th=[191890], 99.90th=[248513], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 7, max= 151, per=25.40%, avg=46.24, stdev=20.61, samples=267 iops : min= 1, max= 37, avg=10.89, stdev= 5.21, samples=267 lat (usec) : 50=0.16%, 100=1.50%, 250=0.13%, 750=0.03%, 1000=0.10% lat (msec) : 2=5.21%, 4=4.59%, 10=6.90%, 20=8.95%, 50=37.79% lat (msec) : 100=27.41%, 250=7.03%, 500=0.16%, 1000=0.03% cpu : usr=0.06%, sys=4.76%, ctx=6646, 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=179639: Thu Aug 27 17:54:22 2026 read: IOPS=10, BW=43.9KiB/s (44.9kB/s)(6028KiB/137390msec) clat (usec): min=33, max=711751, avg=50264.73, stdev=37629.83 lat (usec): min=34, max=711752, avg=50269.41, stdev=37631.99 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 12256], 10.00th=[ 17957], 20.00th=[ 25035], | 30.00th=[ 30802], 40.00th=[ 36439], 50.00th=[ 42730], 60.00th=[ 50594], | 70.00th=[ 61080], 80.00th=[ 70779], 90.00th=[ 88605], 95.00th=[108528], | 99.00th=[162530], 99.50th=[191890], 99.90th=[421528], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 104, per=25.20%, avg=43.60, stdev=18.75, samples=269 iops : min= 1, max= 26, avg=10.23, stdev= 4.74, samples=269 write: IOPS=11, BW=45.6KiB/s (46.7kB/s)(6260KiB/137390msec); 0 zone resets clat (usec): min=983, max=297431, avg=39128.72, stdev=41229.70 lat (usec): min=985, max=297433, avg=39131.21, stdev=41229.62 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1270], 10.00th=[ 1762], 20.00th=[ 4015], | 30.00th=[ 7832], 40.00th=[ 17695], 50.00th=[ 28443], 60.00th=[ 38011], | 70.00th=[ 50594], 80.00th=[ 66323], 90.00th=[ 99091], 95.00th=[120062], | 99.00th=[173016], 99.50th=[219153], 99.90th=[278922], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 7, max= 119, per=24.77%, avg=45.09, stdev=20.03, samples=270 iops : min= 1, max= 29, avg=10.60, stdev= 5.04, samples=270 lat (usec) : 50=0.23%, 100=1.56%, 250=0.03%, 500=0.07%, 1000=0.13% lat (msec) : 2=5.83%, 4=4.33%, 10=6.51%, 20=8.63%, 50=37.14% lat (msec) : 100=27.12%, 250=8.24%, 500=0.16%, 750=0.03% cpu : usr=0.09%, sys=4.68%, ctx=6667, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179640: Thu Aug 27 17:54:22 2026 read: IOPS=11, BW=44.0KiB/s (46.1kB/s)(6052KiB/134525msec) clat (usec): min=34, max=712490, avg=49417.85, stdev=36865.37 lat (usec): min=34, max=712492, avg=49421.53, stdev=36865.21 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 10945], 10.00th=[ 17695], 20.00th=[ 23987], | 30.00th=[ 29230], 40.00th=[ 35390], 50.00th=[ 41681], 60.00th=[ 49021], | 70.00th=[ 59507], 80.00th=[ 72877], 90.00th=[ 90702], 95.00th=[108528], | 99.00th=[160433], 99.50th=[185598], 99.90th=[233833], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 103, per=25.76%, avg=44.56, stdev=18.58, samples=264 iops : min= 1, max= 25, avg=10.47, stdev= 4.70, samples=264 write: IOPS=11, BW=46.4KiB/s (47.5kB/s)(6236KiB/134525msec); 0 zone resets clat (usec): min=991, max=258848, avg=38079.96, stdev=39502.78 lat (usec): min=992, max=258848, avg=38081.70, stdev=39502.72 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1237], 10.00th=[ 1860], 20.00th=[ 4015], | 30.00th=[ 7767], 40.00th=[ 16909], 50.00th=[ 27657], 60.00th=[ 38011], | 70.00th=[ 48497], 80.00th=[ 64226], 90.00th=[ 93848], 95.00th=[116917], | 99.00th=[168821], 99.50th=[200279], 99.90th=[254804], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 7, max= 111, per=25.22%, avg=45.90, stdev=20.97, samples=264 iops : min= 1, max= 27, avg=10.81, stdev= 5.26, samples=264 lat (usec) : 50=0.39%, 100=1.43%, 250=0.13%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=5.66%, 4=4.52%, 10=6.80%, 20=8.79%, 50=38.25% lat (msec) : 100=26.20%, 250=7.45%, 500=0.07%, 750=0.03% cpu : usr=0.08%, sys=4.69%, ctx=6567, 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=174KiB/s (178kB/s), 43.4KiB/s-44.0KiB/s (44.4kB/s-46.1kB/s), io=23.4MiB (24.6MB), run=134525-138130msec WRITE: bw=182KiB/s (186kB/s), 45.6KiB/s-46.5KiB/s (46.7kB/s-47.6kB/s), io=24.6MiB (25.7MB), run=134525-138130msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179642: Thu Aug 27 17:55:08 2026 read: IOPS=8, BW=32.9KiB/s (33.7kB/s)(5992KiB/182261msec) clat (msec): min=6, max=761, avg=48.29, stdev=49.22 lat (msec): min=6, max=761, avg=48.29, stdev=49.22 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 71], 90.00th=[ 114], 95.00th=[ 142], | 99.00th=[ 213], 99.50th=[ 257], 99.90th=[ 447], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 176, per=25.49%, avg=33.14, stdev=24.71, samples=351 iops : min= 1, max= 44, avg= 7.62, stdev= 6.22, samples=351 write: IOPS=8, BW=34.5KiB/s (35.4kB/s)(6296KiB/182261msec); 0 zone resets clat (msec): min=11, max=380, avg=69.75, stdev=48.89 lat (msec): min=11, max=380, avg=69.75, stdev=48.89 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 82], 80.00th=[ 100], 90.00th=[ 134], 95.00th=[ 165], | 99.00th=[ 239], 99.50th=[ 266], 99.90th=[ 372], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 7, max= 134, per=25.06%, avg=34.33, stdev=22.39, samples=356 iops : min= 1, max= 33, avg= 7.92, stdev= 5.63, samples=356 lat (msec) : 10=2.25%, 20=12.70%, 50=42.32%, 100=26.79%, 250=15.30% lat (msec) : 500=0.62%, 1000=0.03% cpu : usr=0.06%, sys=1.58%, ctx=4824, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179643: Thu Aug 27 17:55:08 2026 read: IOPS=8, BW=32.4KiB/s (33.2kB/s)(5940KiB/183422msec) clat (msec): min=5, max=781, avg=48.64, stdev=49.16 lat (msec): min=5, max=781, avg=48.65, stdev=49.16 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 73], 90.00th=[ 108], 95.00th=[ 138], | 99.00th=[ 230], 99.50th=[ 288], 99.90th=[ 435], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 158, per=25.40%, avg=33.02, stdev=24.22, samples=348 iops : min= 1, max= 39, avg= 7.60, stdev= 6.10, samples=348 write: IOPS=8, BW=34.6KiB/s (35.4kB/s)(6348KiB/183422msec); 0 zone resets clat (msec): min=10, max=386, avg=69.98, stdev=51.05 lat (msec): min=10, max=386, avg=69.98, stdev=51.05 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 25], 20.00th=[ 31], | 30.00th=[ 37], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 66], | 70.00th=[ 82], 80.00th=[ 105], 90.00th=[ 140], 95.00th=[ 174], | 99.00th=[ 247], 99.50th=[ 292], 99.90th=[ 355], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 7, max= 127, per=25.09%, avg=34.37, stdev=22.66, samples=357 iops : min= 1, max= 31, avg= 7.93, stdev= 5.70, samples=357 lat (msec) : 10=1.66%, 20=13.64%, 50=42.55%, 100=25.62%, 250=15.72% lat (msec) : 500=0.78%, 1000=0.03% cpu : usr=0.05%, sys=1.61%, ctx=4858, 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=179644: Thu Aug 27 17:55:08 2026 read: IOPS=8, BW=33.2KiB/s (33.0kB/s)(6028KiB/181719msec) clat (msec): min=4, max=432, avg=47.97, stdev=45.06 lat (msec): min=4, max=432, avg=47.97, stdev=45.06 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 70], 90.00th=[ 106], 95.00th=[ 144], | 99.00th=[ 211], 99.50th=[ 257], 99.90th=[ 342], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 7, max= 143, per=25.74%, avg=33.46, stdev=23.44, samples=350 iops : min= 1, max= 35, avg= 7.71, stdev= 5.89, samples=350 write: IOPS=8, BW=34.4KiB/s (35.3kB/s)(6260KiB/181719msec); 0 zone resets clat (msec): min=10, max=789, avg=69.84, stdev=53.20 lat (msec): min=10, max=789, avg=69.84, stdev=53.20 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 81], 80.00th=[ 100], 90.00th=[ 136], 95.00th=[ 169], | 99.00th=[ 247], 99.50th=[ 288], 99.90th=[ 372], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 144, per=25.01%, avg=34.27, stdev=22.87, samples=355 iops : min= 1, max= 36, avg= 7.91, stdev= 5.77, samples=355 lat (msec) : 10=1.76%, 20=12.99%, 50=43.59%, 100=26.07%, 250=14.84% lat (msec) : 500=0.72%, 1000=0.03% cpu : usr=0.05%, sys=1.54%, ctx=4827, 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=179645: Thu Aug 27 17:55:08 2026 read: IOPS=8, BW=33.1KiB/s (33.9kB/s)(6052KiB/182803msec) clat (msec): min=5, max=444, avg=48.18, stdev=44.38 lat (msec): min=5, max=444, avg=48.19, stdev=44.38 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 42], | 70.00th=[ 53], 80.00th=[ 69], 90.00th=[ 105], 95.00th=[ 140], | 99.00th=[ 209], 99.50th=[ 251], 99.90th=[ 342], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 126, per=26.25%, avg=34.13, stdev=23.26, samples=344 iops : min= 1, max= 31, avg= 7.87, stdev= 5.86, samples=344 write: IOPS=8, BW=34.1KiB/s (34.9kB/s)(6236KiB/182803msec); 0 zone resets clat (msec): min=9, max=787, avg=70.39, stdev=53.80 lat (msec): min=9, max=787, avg=70.40, stdev=53.80 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 55], 60.00th=[ 64], | 70.00th=[ 81], 80.00th=[ 104], 90.00th=[ 138], 95.00th=[ 167], | 99.00th=[ 257], 99.50th=[ 313], 99.90th=[ 393], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 128, per=24.78%, avg=33.96, stdev=22.17, samples=356 iops : min= 1, max= 32, avg= 7.83, stdev= 5.58, samples=356 lat (msec) : 10=1.92%, 20=12.47%, 50=42.81%, 100=26.37%, 250=15.59% lat (msec) : 500=0.81%, 1000=0.03% cpu : usr=0.06%, sys=1.57%, ctx=4745, 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), 32.4KiB/s-33.2KiB/s (33.2kB/s-33.0kB/s), io=23.4MiB (24.6MB), run=181719-183422msec WRITE: bw=137KiB/s (140kB/s), 34.1KiB/s-34.6KiB/s (34.9kB/s-35.4kB/s), io=24.6MiB (25.7MB), run=181719-183422msec 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=179691: Thu Aug 27 17:56:05 2026 read: IOPS=8, BW=139KiB/s (143kB/s)(5920KiB/42441msec) clat (usec): min=36, max=317811, avg=60821.49, stdev=44901.13 lat (usec): min=37, max=317813, avg=60845.16, stdev=44914.45 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 62], 10.00th=[ 79], 20.00th=[ 27132], | 30.00th=[ 37487], 40.00th=[ 47973], 50.00th=[ 56886], 60.00th=[ 65274], | 70.00th=[ 74974], 80.00th=[ 89654], 90.00th=[112722], 95.00th=[132645], | 99.00th=[206570], 99.50th=[308282], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 30, max= 377, per=26.43%, avg=140.87, stdev=62.00, samples=82 iops : min= 1, max= 23, avg= 8.00, stdev= 3.92, samples=82 write: IOPS=9, BW=150KiB/s (154kB/s)(6368KiB/42441msec); 0 zone resets clat (usec): min=1367, max=397426, avg=49136.36, stdev=53979.02 lat (usec): min=1369, max=397427, avg=49141.80, stdev=53980.25 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 2024], 10.00th=[ 3392], 20.00th=[ 7308], | 30.00th=[ 12911], 40.00th=[ 23200], 50.00th=[ 33424], 60.00th=[ 46924], | 70.00th=[ 59507], 80.00th=[ 77071], 90.00th=[117965], 95.00th=[158335], | 99.00th=[283116], 99.50th=[333448], 99.90th=[396362], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 31, max= 316, per=27.05%, avg=151.73, stdev=66.27, samples=82 iops : min= 1, max= 19, avg= 8.68, stdev= 4.20, samples=82 lat (usec) : 50=0.78%, 100=5.08%, 250=0.26%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.34%, 4=3.65%, 10=8.07%, 20=5.47%, 50=26.17% lat (msec) : 100=34.64%, 250=12.24%, 500=0.78% cpu : usr=0.04%, sys=4.05%, ctx=1664, 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=179692: Thu Aug 27 17:56:05 2026 read: IOPS=7, BW=128KiB/s (131kB/s)(5744KiB/44908msec) clat (usec): min=45, max=261935, avg=65807.82, stdev=46267.12 lat (usec): min=46, max=261937, avg=65829.34, stdev=46256.53 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 63], 10.00th=[ 351], 20.00th=[ 28181], | 30.00th=[ 39584], 40.00th=[ 47449], 50.00th=[ 58459], 60.00th=[ 69731], | 70.00th=[ 84411], 80.00th=[102237], 90.00th=[126354], 95.00th=[152044], | 99.00th=[219153], 99.50th=[244319], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 30, max= 282, per=24.08%, avg=128.36, stdev=58.75, samples=87 iops : min= 1, max= 17, avg= 7.21, stdev= 3.73, samples=87 write: IOPS=9, BW=146KiB/s (149kB/s)(6544KiB/44908msec); 0 zone resets clat (usec): min=1558, max=460705, avg=51091.11, stdev=53996.99 lat (usec): min=1560, max=460706, avg=51093.74, stdev=53996.69 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2278], 10.00th=[ 3621], 20.00th=[ 7635], | 30.00th=[ 13566], 40.00th=[ 27132], 50.00th=[ 38011], 60.00th=[ 50594], | 70.00th=[ 63701], 80.00th=[ 86508], 90.00th=[116917], 95.00th=[152044], | 99.00th=[210764], 99.50th=[333448], 99.90th=[459277], 99.95th=[459277], | 99.99th=[459277] bw ( KiB/s): min= 30, max= 510, per=26.22%, avg=147.10, stdev=82.97, samples=87 iops : min= 1, max= 31, avg= 8.38, stdev= 5.22, samples=87 lat (usec) : 50=0.26%, 100=3.65%, 250=0.65%, 500=0.13% lat (msec) : 2=2.34%, 4=3.65%, 10=7.55%, 20=7.16%, 50=26.30% lat (msec) : 100=30.47%, 250=17.32%, 500=0.52% cpu : usr=0.06%, sys=4.09%, ctx=1752, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179693: Thu Aug 27 17:56:05 2026 read: IOPS=8, BW=142KiB/s (146kB/s)(6256KiB/43997msec) clat (usec): min=36, max=303741, avg=63243.12, stdev=48413.40 lat (usec): min=36, max=303742, avg=63245.35, stdev=48415.66 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 87], 20.00th=[ 27657], | 30.00th=[ 39584], 40.00th=[ 47449], 50.00th=[ 54264], 60.00th=[ 66323], | 70.00th=[ 78119], 80.00th=[ 91751], 90.00th=[117965], 95.00th=[143655], | 99.00th=[252707], 99.50th=[287310], 99.90th=[304088], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 30, max= 350, per=26.85%, avg=143.12, stdev=73.16, samples=86 iops : min= 1, max= 21, avg= 8.14, stdev= 4.63, samples=86 write: IOPS=8, BW=137KiB/s (140kB/s)(6032KiB/43997msec); 0 zone resets clat (usec): min=1384, max=270771, avg=50748.84, stdev=49207.62 lat (usec): min=1385, max=270775, avg=50753.32, stdev=49207.12 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1975], 10.00th=[ 2999], 20.00th=[ 7504], | 30.00th=[ 14222], 40.00th=[ 24773], 50.00th=[ 37487], 60.00th=[ 48497], | 70.00th=[ 64750], 80.00th=[ 85459], 90.00th=[119014], 95.00th=[141558], | 99.00th=[217056], 99.50th=[238027], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 30, max= 349, per=24.63%, avg=138.16, stdev=66.44, samples=85 iops : min= 1, max= 21, avg= 7.82, stdev= 4.19, samples=85 lat (usec) : 50=0.52%, 100=4.95%, 250=0.39%, 500=0.13%, 750=0.13% lat (msec) : 2=2.47%, 4=3.52%, 10=5.99%, 20=7.16%, 50=27.73% lat (msec) : 100=30.47%, 250=15.89%, 500=0.65% cpu : usr=0.05%, sys=3.97%, ctx=1698, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179694: Thu Aug 27 17:56:05 2026 read: IOPS=8, BW=143KiB/s (146kB/s)(6032KiB/42229msec) clat (usec): min=45, max=239634, avg=62506.79, stdev=42691.22 lat (usec): min=46, max=239636, avg=62508.32, stdev=42691.23 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 61], 10.00th=[ 147], 20.00th=[ 31851], | 30.00th=[ 40633], 40.00th=[ 47973], 50.00th=[ 54789], 60.00th=[ 64226], | 70.00th=[ 77071], 80.00th=[ 95945], 90.00th=[115868], 95.00th=[141558], | 99.00th=[189793], 99.50th=[235930], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 314, per=26.88%, avg=143.24, stdev=60.35, samples=82 iops : min= 1, max= 19, avg= 8.15, stdev= 3.80, samples=82 write: IOPS=9, BW=148KiB/s (152kB/s)(6256KiB/42229msec); 0 zone resets clat (usec): min=1398, max=440531, avg=46994.05, stdev=50446.73 lat (usec): min=1399, max=440532, avg=46996.62, stdev=50446.64 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1778], 10.00th=[ 2900], 20.00th=[ 7046], | 30.00th=[ 10945], 40.00th=[ 16909], 50.00th=[ 30540], 60.00th=[ 45876], | 70.00th=[ 58983], 80.00th=[ 85459], 90.00th=[111674], 95.00th=[139461], | 99.00th=[200279], 99.50th=[267387], 99.90th=[442500], 99.95th=[442500], | 99.99th=[442500] bw ( KiB/s): min= 31, max= 350, per=26.42%, avg=148.22, stdev=72.34, samples=83 iops : min= 1, max= 21, avg= 8.46, stdev= 4.53, samples=83 lat (usec) : 50=0.39%, 100=4.04%, 250=0.78%, 750=0.13% lat (msec) : 2=4.04%, 4=2.47%, 10=7.29%, 20=9.11%, 50=26.30% lat (msec) : 100=29.56%, 250=15.63%, 500=0.26% cpu : usr=0.04%, sys=3.79%, ctx=1614, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=533KiB/s (546kB/s), 128KiB/s-143KiB/s (131kB/s-146kB/s), io=23.4MiB (24.5MB), run=42229-44908msec WRITE: bw=561KiB/s (575kB/s), 137KiB/s-150KiB/s (140kB/s-154kB/s), io=24.6MiB (25.8MB), run=42229-44908msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179687: Thu Aug 27 17:56:22 2026 read: IOPS=5, BW=95.7KiB/s (97.0kB/s)(5920KiB/61873msec) clat (msec): min=7, max=469, avg=64.16, stdev=54.51 lat (msec): min=7, max=469, avg=64.17, stdev=54.51 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 40], 50.00th=[ 48], 60.00th=[ 55], | 70.00th=[ 67], 80.00th=[ 90], 90.00th=[ 128], 95.00th=[ 178], | 99.00th=[ 262], 99.50th=[ 321], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 29, max= 287, per=26.12%, avg=100.04, stdev=57.47, samples=114 iops : min= 1, max= 17, avg= 5.42, stdev= 3.64, samples=114 write: IOPS=6, BW=103KiB/s (105kB/s)(6368KiB/61873msec); 0 zone resets clat (msec): min=18, max=457, avg=95.29, stdev=65.62 lat (msec): min=18, max=457, avg=95.29, stdev=65.63 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 30], 10.00th=[ 35], 20.00th=[ 44], | 30.00th=[ 53], 40.00th=[ 62], 50.00th=[ 78], 60.00th=[ 92], | 70.00th=[ 111], 80.00th=[ 140], 90.00th=[ 178], 95.00th=[ 228], | 99.00th=[ 359], 99.50th=[ 447], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 29, max= 288, per=26.22%, avg=105.67, stdev=58.56, samples=117 iops : min= 1, max= 18, avg= 5.77, stdev= 3.72, samples=117 lat (msec) : 10=0.52%, 20=3.65%, 50=35.16%, 100=34.24%, 250=24.22% lat (msec) : 500=2.21% cpu : usr=0.03%, sys=1.29%, ctx=1142, 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=179688: Thu Aug 27 17:56:22 2026 read: IOPS=5, BW=91.0KiB/s (94.2kB/s)(5744KiB/62448msec) clat (msec): min=6, max=549, avg=66.68, stdev=60.18 lat (msec): min=6, max=549, avg=66.68, stdev=60.18 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 75], 80.00th=[ 100], 90.00th=[ 148], 95.00th=[ 186], | 99.00th=[ 271], 99.50th=[ 384], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 29, max= 384, per=25.78%, avg=98.73, stdev=70.19, samples=112 iops : min= 1, max= 24, avg= 5.34, stdev= 4.45, samples=112 write: IOPS=6, BW=105KiB/s (107kB/s)(6544KiB/62448msec); 0 zone resets clat (msec): min=14, max=534, avg=93.72, stdev=62.98 lat (msec): min=14, max=534, avg=93.73, stdev=62.98 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 28], 10.00th=[ 34], 20.00th=[ 44], | 30.00th=[ 52], 40.00th=[ 61], 50.00th=[ 73], 60.00th=[ 90], | 70.00th=[ 118], 80.00th=[ 144], 90.00th=[ 178], 95.00th=[ 213], | 99.00th=[ 275], 99.50th=[ 305], 99.90th=[ 535], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 30, max= 287, per=26.49%, avg=106.74, stdev=60.68, samples=117 iops : min= 1, max= 17, avg= 5.84, stdev= 3.84, samples=117 lat (msec) : 10=0.78%, 20=4.69%, 50=34.77%, 100=32.29%, 250=25.91% lat (msec) : 500=1.30%, 750=0.26% cpu : usr=0.04%, sys=1.26%, ctx=1174, 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=179689: Thu Aug 27 17:56:22 2026 read: IOPS=6, BW=102KiB/s (105kB/s)(6256KiB/61091msec) clat (msec): min=8, max=552, avg=66.18, stdev=57.97 lat (msec): min=8, max=552, avg=66.19, stdev=57.97 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 17], 10.00th=[ 21], 20.00th=[ 29], | 30.00th=[ 34], 40.00th=[ 42], 50.00th=[ 48], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 90], 90.00th=[ 142], 95.00th=[ 176], | 99.00th=[ 275], 99.50th=[ 355], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 29, max= 412, per=27.70%, avg=106.08, stdev=74.73, samples=116 iops : min= 1, max= 25, avg= 5.78, stdev= 4.72, samples=116 write: IOPS=6, BW=98.7KiB/s (101kB/s)(6032KiB/61091msec); 0 zone resets clat (msec): min=13, max=523, avg=93.21, stdev=57.29 lat (msec): min=13, max=523, avg=93.23, stdev=57.28 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 28], 10.00th=[ 33], 20.00th=[ 46], | 30.00th=[ 56], 40.00th=[ 68], 50.00th=[ 82], 60.00th=[ 96], | 70.00th=[ 112], 80.00th=[ 140], 90.00th=[ 174], 95.00th=[ 197], | 99.00th=[ 234], 99.50th=[ 317], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 29, max= 351, per=24.93%, avg=100.47, stdev=60.67, samples=117 iops : min= 1, max= 21, avg= 5.44, stdev= 3.83, samples=117 lat (msec) : 10=0.39%, 20=4.95%, 50=34.38%, 100=32.81%, 250=26.43% lat (msec) : 500=0.78%, 750=0.26% cpu : usr=0.04%, sys=1.22%, ctx=1200, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179690: Thu Aug 27 17:56:22 2026 read: IOPS=6, BW=97.3KiB/s (99.6kB/s)(6032KiB/62008msec) clat (msec): min=7, max=306, avg=67.38, stdev=56.51 lat (msec): min=7, max=306, avg=67.38, stdev=56.51 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 20], 20.00th=[ 27], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 50], 60.00th=[ 61], | 70.00th=[ 70], 80.00th=[ 96], 90.00th=[ 144], 95.00th=[ 192], | 99.00th=[ 275], 99.50th=[ 292], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 31, max= 318, per=26.74%, avg=102.42, stdev=62.19, samples=115 iops : min= 1, max= 19, avg= 5.57, stdev= 3.96, samples=115 write: IOPS=6, BW=101KiB/s (103kB/s)(6256KiB/62008msec); 0 zone resets clat (msec): min=17, max=543, avg=92.99, stdev=65.71 lat (msec): min=17, max=543, avg=92.99, stdev=65.71 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 29], 10.00th=[ 37], 20.00th=[ 45], | 30.00th=[ 55], 40.00th=[ 65], 50.00th=[ 73], 60.00th=[ 89], | 70.00th=[ 106], 80.00th=[ 130], 90.00th=[ 171], 95.00th=[ 224], | 99.00th=[ 326], 99.50th=[ 451], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 29, max= 381, per=26.10%, avg=105.20, stdev=64.10, samples=117 iops : min= 1, max= 23, avg= 5.74, stdev= 4.05, samples=117 lat (msec) : 10=0.52%, 20=5.21%, 50=31.77%, 100=36.33%, 250=23.57% lat (msec) : 500=2.47%, 750=0.13% cpu : usr=0.03%, sys=1.17%, ctx=1134, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=384KiB/s (393kB/s), 91.0KiB/s-102KiB/s (94.2kB/s-105kB/s), io=23.4MiB (24.5MB), run=61091-62448msec WRITE: bw=404KiB/s (413kB/s), 98.7KiB/s-105KiB/s (101kB/s-107kB/s), io=24.6MiB (25.8MB), run=61091-62448msec 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=179710: Thu Aug 27 17:56:40 2026 read: IOPS=1, BW=1749KiB/s (1791kB/s)(7168KiB/4098msec) clat (usec): min=419, max=339072, avg=156477.18, stdev=135434.73 lat (usec): min=420, max=339073, avg=156478.41, stdev=135434.88 clat percentiles (usec): | 1.00th=[ 420], 5.00th=[ 420], 10.00th=[ 420], 20.00th=[ 570], | 30.00th=[116917], 40.00th=[116917], 50.00th=[122160], 60.00th=[210764], | 70.00th=[210764], 80.00th=[308282], 90.00th=[337642], 95.00th=[337642], | 99.00th=[337642], 99.50th=[337642], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 1607, max= 4087, per=92.18%, avg=3236.33, stdev=1411.50, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1249KiB/s (1279kB/s)(5120KiB/4098msec); 0 zone resets clat (msec): min=132, max=1824, avg=564.95, stdev=707.31 lat (msec): min=132, max=1824, avg=565.02, stdev=707.31 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 296], 60.00th=[ 296], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 1821], 95.00th=[ 1821], | 99.00th=[ 1821], 99.50th=[ 1821], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 1980, max= 4015, per=54.27%, avg=2667.33, stdev=1167.19, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=33.33%, 500=41.67%, 2000=8.33% cpu : usr=0.00%, sys=10.35%, ctx=134, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=179711: Thu Aug 27 17:56:40 2026 read: IOPS=0, BW=351KiB/s (360kB/s)(2048KiB/5833msec) clat (msec): min=198, max=2049, avg=1124.16, stdev=1308.43 lat (msec): min=198, max=2049, avg=1124.17, stdev=1308.43 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 199], 60.00th=[ 2056], | 70.00th=[ 2056], 80.00th=[ 2056], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 1950, max= 2007, per=56.35%, avg=1978.50, stdev=40.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1756KiB/s (1798kB/s)(10.0MiB/5833msec); 0 zone resets clat (msec): min=130, max=715, avg=349.18, stdev=183.63 lat (msec): min=130, max=715, avg=349.39, stdev=183.50 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 165], | 30.00th=[ 169], 40.00th=[ 292], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 380], 80.00th=[ 477], 90.00th=[ 531], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1950, max= 6023, per=61.17%, avg=3006.50, stdev=1691.21, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=11.57%, ctx=346, 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=179712: Thu Aug 27 17:56:40 2026 read: IOPS=2, BW=2256KiB/s (2310kB/s)(6144KiB/2723msec) clat (usec): min=1004, max=352270, avg=133260.99, stdev=131951.60 lat (usec): min=1005, max=352271, avg=133273.86, stdev=131956.89 clat percentiles (usec): | 1.00th=[ 1004], 5.00th=[ 1004], 10.00th=[ 1004], 20.00th=[ 2040], | 30.00th=[ 2040], 40.00th=[123208], 50.00th=[123208], 60.00th=[123208], | 70.00th=[198181], 80.00th=[198181], 90.00th=[350225], 95.00th=[350225], | 99.00th=[350225], 99.50th=[350225], 99.90th=[350225], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 2015, max= 4055, per=95.75%, avg=3361.67, stdev=1166.42, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=2, BW=2256KiB/s (2310kB/s)(6144KiB/2723msec); 0 zone resets clat (msec): min=148, max=553, avg=303.85, stdev=138.59 lat (msec): min=148, max=554, avg=303.92, stdev=138.61 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 309], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1477, max= 4055, per=48.74%, avg=2395.50, stdev=1136.19, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 2=8.33%, 4=8.33%, 250=41.67%, 500=33.33%, 750=8.33% cpu : usr=0.07%, sys=15.91%, ctx=134, 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=179713: Thu Aug 27 17:56:40 2026 read: IOPS=0, BW=1001KiB/s (1025kB/s)(5120KiB/5117msec) clat (usec): min=440, max=166631, avg=121578.29, stdev=68354.11 lat (usec): min=441, max=166632, avg=121579.19, stdev=68354.08 clat percentiles (usec): | 1.00th=[ 441], 5.00th=[ 441], 10.00th=[ 441], 20.00th=[ 441], | 30.00th=[141558], 40.00th=[141558], 50.00th=[147850], 60.00th=[147850], | 70.00th=[152044], 80.00th=[152044], 90.00th=[166724], 95.00th=[166724], | 99.00th=[166724], 99.50th=[166724], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 3900, max= 4000, per=100.00%, avg=3950.00, stdev=70.71, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1401KiB/s (1434kB/s)(7168KiB/5117msec); 0 zone resets clat (msec): min=183, max=2046, avg=595.99, stdev=674.67 lat (msec): min=183, max=2046, avg=596.08, stdev=674.68 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 211], | 30.00th=[ 220], 40.00th=[ 220], 50.00th=[ 264], 60.00th=[ 460], | 70.00th=[ 460], 80.00th=[ 793], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 1950, max= 4087, per=51.09%, avg=2511.00, stdev=1050.97, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=58.33%, 500=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=10.44%, ctx=146, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=3511KiB/s (3595kB/s), 351KiB/s-2256KiB/s (360kB/s-2310kB/s), io=20.0MiB (20.0MB), run=2723-5833msec WRITE: bw=4915KiB/s (5033kB/s), 1249KiB/s-2256KiB/s (1279kB/s-2310kB/s), io=28.0MiB (29.4MB), run=2723-5833msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179714: Thu Aug 27 17:56:40 2026 read: IOPS=1, BW=1177KiB/s (1205kB/s)(7168KiB/6090msec) clat (msec): min=183, max=1155, avg=457.86, stdev=332.75 lat (msec): min=183, max=1155, avg=457.86, stdev=332.75 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 188], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 405], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 542], 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= 2019, max= 3230, per=67.56%, avg=2269.20, stdev=537.20, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=841KiB/s (861kB/s)(5120KiB/6090msec); 0 zone resets clat (msec): min=127, max=1609, avg=563.52, stdev=598.57 lat (msec): min=127, max=1609, avg=563.61, stdev=598.58 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 128], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 409], 60.00th=[ 409], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 1973, max= 4031, per=53.30%, avg=2506.50, stdev=1016.51, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 2000=16.67% cpu : usr=0.00%, sys=2.41%, ctx=77, 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=179715: Thu Aug 27 17:56:40 2026 read: IOPS=0, BW=337KiB/s (345kB/s)(2048KiB/6084msec) clat (msec): min=105, max=2018, avg=1062.20, stdev=1352.86 lat (msec): min=105, max=2018, avg=1062.21, stdev=1352.86 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 106], | 30.00th=[ 106], 40.00th=[ 106], 50.00th=[ 106], 60.00th=[ 2022], | 70.00th=[ 2022], 80.00th=[ 2022], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 1973, max= 2003, per=59.18%, avg=1988.00, stdev=21.21, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1683KiB/s (1723kB/s)(10.0MiB/6084msec); 0 zone resets clat (msec): min=171, max=1195, avg=367.10, stdev=316.92 lat (msec): min=171, max=1195, avg=367.18, stdev=316.93 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 174], | 30.00th=[ 176], 40.00th=[ 180], 50.00th=[ 192], 60.00th=[ 232], | 70.00th=[ 443], 80.00th=[ 451], 90.00th=[ 460], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 2019, max= 4031, per=60.01%, avg=2822.20, stdev=1092.58, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 250=58.33%, 500=25.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=4.44%, ctx=104, 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=179716: Thu Aug 27 17:56:40 2026 read: IOPS=0, BW=1008KiB/s (1032kB/s)(6144KiB/6096msec) clat (msec): min=100, max=395, avg=240.85, stdev=107.97 lat (msec): min=100, max=395, avg=240.87, stdev=107.93 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 218], 50.00th=[ 218], 60.00th=[ 232], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 2019, max= 4039, per=99.88%, avg=3355.00, stdev=1157.12, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=1008KiB/s (1032kB/s)(6144KiB/6096msec); 0 zone resets clat (msec): min=158, max=2015, avg=709.45, stdev=688.20 lat (msec): min=159, max=2015, avg=709.53, stdev=688.20 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 693], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 1973, max= 4039, per=51.45%, avg=2419.60, stdev=905.74, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=4.27%, ctx=115, 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=179717: Thu Aug 27 17:56:40 2026 read: IOPS=0, BW=881KiB/s (902kB/s)(5120KiB/5812msec) clat (msec): min=65, max=711, avg=329.59, stdev=277.06 lat (msec): min=65, max=711, avg=329.59, stdev=277.06 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 66], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 207], 60.00th=[ 207], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 2015, max= 4007, per=79.80%, avg=2680.33, stdev=1148.93, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1233KiB/s (1263kB/s)(7168KiB/5812msec); 0 zone resets clat (msec): min=102, max=2025, avg=589.90, stdev=662.43 lat (msec): min=103, max=2025, avg=590.26, stdev=662.39 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 132], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 359], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 617], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 1464, max= 4039, per=48.31%, avg=2272.00, stdev=895.13, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=16.67%, 750=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.24%, ctx=70, 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=3360KiB/s (3440kB/s), 337KiB/s-1177KiB/s (345kB/s-1205kB/s), io=20.0MiB (20.0MB), run=5812-6096msec WRITE: bw=4703KiB/s (4816kB/s), 841KiB/s-1683KiB/s (861kB/s-1723kB/s), io=28.0MiB (29.4MB), run=5812-6096msec 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=179728: Thu Aug 27 17:56:55 2026 read: IOPS=1, BW=5269KiB/s (5396kB/s)(12.0MiB/2332msec) clat (msec): min=582, max=820, avg=712.84, stdev=120.70 lat (msec): min=582, max=820, avg=712.85, stdev=120.71 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 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= 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) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=14.63%, ctx=281, 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=179729: Thu Aug 27 17:56:55 2026 read: IOPS=0, BW=1237KiB/s (1266kB/s)(4096KiB/3312msec) clat (nsec): min=910702k, max=910702k, avg=910702097.00, stdev= 0.00 lat (nsec): min=910705k, max=910705k, avg=910704515.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 911], 5.00th=[ 911], 10.00th=[ 911], 20.00th=[ 911], | 30.00th=[ 911], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 911], 80.00th=[ 911], 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= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2473KiB/s (2533kB/s)(8192KiB/3312msec); 0 zone resets clat (msec): min=966, max=1279, avg=1123.32, stdev=221.21 lat (msec): min=971, max=1280, avg=1125.86, stdev=218.09 clat percentiles (msec): | 1.00th=[ 969], 5.00th=[ 969], 10.00th=[ 969], 20.00th=[ 969], | 30.00th=[ 969], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8192, max= 8192, per=82.81%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.03%, sys=5.29%, ctx=135, 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=179730: Thu Aug 27 17:56:55 2026 write: IOPS=0, BW=3727KiB/s (3816kB/s)(12.0MiB/3297msec); 0 zone resets clat (msec): min=277, max=1664, avg=1042.63, stdev=704.41 lat (msec): min=278, max=1664, avg=1042.98, stdev=704.38 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 7937, max= 8192, per=81.52%, avg=8064.50, stdev=180.31, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.49%, ctx=71, 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=179731: Thu Aug 27 17:56:55 2026 write: IOPS=1, BW=5084KiB/s (5206kB/s)(12.0MiB/2417msec); 0 zone resets clat (msec): min=216, max=1284, avg=765.45, stdev=534.48 lat (msec): min=216, max=1286, avg=766.41, stdev=535.40 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 793], 50.00th=[ 793], 60.00th=[ 793], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8192, max= 8192, per=82.81%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.08%, sys=4.88%, ctx=61, 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=4947KiB/s (5066kB/s), 1237KiB/s-5269KiB/s (1266kB/s-5396kB/s), io=16.0MiB (16.8MB), run=2332-3312msec WRITE: bw=9894KiB/s (10.1MB/s), 2473KiB/s-5084KiB/s (2533kB/s-5206kB/s), io=32.0MiB (33.6MB), run=2417-3312msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179724: Thu Aug 27 17:56:55 2026 read: IOPS=1, BW=7543KiB/s (7724kB/s)(12.0MiB/1629msec) clat (msec): min=240, max=982, avg=514.89, stdev=406.83 lat (msec): min=240, max=982, avg=514.89, stdev=406.83 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 241], | 30.00th=[ 241], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min=12047, max=12047, per=100.00%, avg=12047.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.25%, sys=8.42%, ctx=67, 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=179725: Thu Aug 27 17:56:55 2026 read: IOPS=0, BW=1425KiB/s (1459kB/s)(4096KiB/2874msec) clat (nsec): min=279147k, max=279147k, avg=279146846.00, stdev= 0.00 lat (nsec): min=279149k, max=279149k, avg=279149249.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 279], 95.00th=[ 279], | 99.00th=[ 279], 99.50th=[ 279], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 6187, max= 6187, per=100.00%, avg=6187.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2850KiB/s (2919kB/s)(8192KiB/2874msec); 0 zone resets clat (msec): min=492, max=2036, avg=1264.12, stdev=1091.69 lat (msec): min=492, max=2036, avg=1264.50, stdev=1091.64 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 493], 10.00th=[ 493], 20.00th=[ 493], | 30.00th=[ 493], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 2039], | 70.00th=[ 2039], 80.00th=[ 2039], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 8175, max= 8175, per=74.70%, avg=8175.00, 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=3.97%, ctx=55, 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=179726: Thu Aug 27 17:56:55 2026 write: IOPS=1, BW=4104KiB/s (4203kB/s)(12.0MiB/2994msec); 0 zone resets clat (msec): min=350, max=1236, avg=930.80, stdev=502.63 lat (msec): min=350, max=1237, avg=931.19, stdev=502.82 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8175, max= 8175, per=74.70%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.68%, ctx=54, 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=179727: Thu Aug 27 17:56:55 2026 write: IOPS=1, BW=5525KiB/s (5658kB/s)(12.0MiB/2224msec); 0 zone resets clat (msec): min=310, max=1004, avg=705.90, stdev=356.96 lat (msec): min=310, max=1004, avg=706.83, stdev=357.23 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 5587, max= 8175, per=62.87%, avg=6881.00, stdev=1829.99, 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=4.90%, ctx=56, 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=5701KiB/s (5838kB/s), 1425KiB/s-7543KiB/s (1459kB/s-7724kB/s), io=16.0MiB (16.8MB), run=1629-2874msec WRITE: bw=10.7MiB/s (11.2MB/s), 2850KiB/s-5525KiB/s (2919kB/s-5658kB/s), io=32.0MiB (33.6MB), run=2224-2994msec