== sanity test 398b: DIO and buffer IO race ============== 14:24:41 (1783967081) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.56981 s, 7.7 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=143887: Mon Jul 13 14:26:53 2026 read: IOPS=13, BW=52.7KiB/s (53.0kB/s)(5992KiB/113720msec) clat (usec): min=22, max=330333, avg=38168.50, stdev=28863.02 lat (usec): min=22, max=330335, avg=38169.97, stdev=28862.98 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 9896], 20.00th=[ 18744], | 30.00th=[ 23725], 40.00th=[ 27919], 50.00th=[ 32637], 60.00th=[ 38536], | 70.00th=[ 45876], 80.00th=[ 55313], 90.00th=[ 70779], 95.00th=[ 85459], | 99.00th=[141558], 99.50th=[168821], 99.90th=[267387], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 7, max= 127, per=24.98%, avg=52.22, stdev=21.27, samples=223 iops : min= 1, max= 31, avg=12.41, stdev= 5.33, samples=223 write: IOPS=13, BW=55.4KiB/s (56.7kB/s)(6296KiB/113720msec); 0 zone resets clat (usec): min=965, max=738987, avg=35601.36, stdev=38245.29 lat (usec): min=966, max=738989, avg=35616.77, stdev=38242.01 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1450], 10.00th=[ 2114], 20.00th=[ 5276], | 30.00th=[ 8979], 40.00th=[ 17695], 50.00th=[ 26084], 60.00th=[ 35390], | 70.00th=[ 46924], 80.00th=[ 62653], 90.00th=[ 81265], 95.00th=[101188], | 99.00th=[145753], 99.50th=[173016], 99.90th=[223347], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 7, max= 141, per=25.23%, avg=55.00, stdev=21.83, samples=223 iops : min= 1, max= 35, avg=13.11, stdev= 5.48, samples=223 lat (usec) : 50=0.52%, 100=3.55%, 250=0.29%, 500=0.20%, 1000=0.10% lat (msec) : 2=4.65%, 4=4.07%, 10=7.49%, 20=11.72%, 50=40.92% lat (msec) : 100=22.36%, 250=4.04%, 500=0.07%, 750=0.03% cpu : usr=0.09%, sys=6.27%, ctx=6826, majf=0, minf=21 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=143888: Mon Jul 13 14:26:53 2026 read: IOPS=13, BW=52.5KiB/s (53.7kB/s)(5940KiB/113248msec) clat (usec): min=29, max=278123, avg=37244.26, stdev=26949.24 lat (usec): min=30, max=278124, avg=37246.72, stdev=26949.98 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 8848], 20.00th=[ 18220], | 30.00th=[ 23200], 40.00th=[ 27395], 50.00th=[ 32637], 60.00th=[ 38011], | 70.00th=[ 45351], 80.00th=[ 53740], 90.00th=[ 69731], 95.00th=[ 83362], | 99.00th=[120062], 99.50th=[160433], 99.90th=[256902], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 119, per=24.99%, avg=52.23, stdev=20.09, samples=222 iops : min= 1, max= 29, avg=12.41, stdev= 5.06, samples=222 write: IOPS=14, BW=56.1KiB/s (57.4kB/s)(6348KiB/113248msec); 0 zone resets clat (usec): min=1184, max=721917, avg=36198.51, stdev=38552.04 lat (usec): min=1185, max=721918, avg=36206.76, stdev=38550.68 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1434], 10.00th=[ 2024], 20.00th=[ 4817], | 30.00th=[ 9110], 40.00th=[ 18220], 50.00th=[ 26870], 60.00th=[ 35914], | 70.00th=[ 48497], 80.00th=[ 62653], 90.00th=[ 83362], 95.00th=[103285], | 99.00th=[149947], 99.50th=[181404], 99.90th=[242222], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 7, max= 120, per=25.53%, avg=55.65, stdev=21.89, samples=222 iops : min= 1, max= 30, avg=13.27, stdev= 5.51, samples=222 lat (usec) : 50=0.68%, 100=3.42%, 250=0.26%, 500=0.07%, 750=0.03% lat (msec) : 2=5.24%, 4=3.74%, 10=7.62%, 20=11.46%, 50=41.18% lat (msec) : 100=22.33%, 250=3.87%, 500=0.07%, 750=0.03% cpu : usr=0.10%, sys=6.20%, ctx=6678, majf=0, minf=20 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=143889: Mon Jul 13 14:26:53 2026 read: IOPS=13, BW=52.5KiB/s (53.7kB/s)(6028KiB/114848msec) clat (usec): min=28, max=796354, avg=38748.39, stdev=34156.83 lat (usec): min=28, max=796356, avg=38750.57, stdev=34157.25 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 69], 10.00th=[ 11731], 20.00th=[ 19268], | 30.00th=[ 24249], 40.00th=[ 27919], 50.00th=[ 32900], 60.00th=[ 39060], | 70.00th=[ 44827], 80.00th=[ 54789], 90.00th=[ 68682], 95.00th=[ 86508], | 99.00th=[130548], 99.50th=[208667], 99.90th=[274727], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 7, max= 141, per=25.17%, avg=52.60, stdev=19.93, samples=223 iops : min= 1, max= 35, avg=12.51, stdev= 5.02, samples=223 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(6260KiB/114848msec); 0 zone resets clat (usec): min=974, max=354381, avg=35763.65, stdev=35435.15 lat (usec): min=975, max=354383, avg=35775.94, stdev=35428.49 clat percentiles (usec): | 1.00th=[ 1303], 5.00th=[ 1450], 10.00th=[ 2073], 20.00th=[ 4883], | 30.00th=[ 9765], 40.00th=[ 18220], 50.00th=[ 27919], 60.00th=[ 36963], | 70.00th=[ 47449], 80.00th=[ 59507], 90.00th=[ 81265], 95.00th=[100140], | 99.00th=[147850], 99.50th=[179307], 99.90th=[329253], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 15, max= 133, per=24.87%, avg=54.21, stdev=21.62, samples=224 iops : min= 3, max= 33, avg=12.91, stdev= 5.43, samples=224 lat (usec) : 50=0.46%, 100=2.73%, 250=0.33%, 500=0.07%, 1000=0.03% lat (msec) : 2=5.05%, 4=4.07%, 10=6.97%, 20=11.75%, 50=42.61% lat (msec) : 100=22.01%, 250=3.74%, 500=0.16%, 1000=0.03% cpu : usr=0.10%, sys=6.23%, ctx=6911, majf=0, minf=20 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=143890: Mon Jul 13 14:26:53 2026 read: IOPS=13, BW=53.7KiB/s (55.0kB/s)(6052KiB/112668msec) clat (usec): min=32, max=385239, avg=37148.45, stdev=27689.35 lat (usec): min=32, max=385240, avg=37149.90, stdev=27689.28 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 10945], 20.00th=[ 18744], | 30.00th=[ 23200], 40.00th=[ 27395], 50.00th=[ 32113], 60.00th=[ 38011], | 70.00th=[ 45351], 80.00th=[ 53740], 90.00th=[ 68682], 95.00th=[ 80217], | 99.00th=[121111], 99.50th=[166724], 99.90th=[287310], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 7, max= 110, per=25.69%, avg=53.70, stdev=18.95, samples=220 iops : min= 1, max= 27, avg=12.78, stdev= 4.78, samples=220 write: IOPS=13, BW=55.3KiB/s (56.7kB/s)(6236KiB/112668msec); 0 zone resets clat (usec): min=1023, max=719090, avg=35882.79, stdev=39224.42 lat (usec): min=1024, max=719092, avg=35887.35, stdev=39223.30 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1418], 10.00th=[ 1893], 20.00th=[ 4948], | 30.00th=[ 9765], 40.00th=[ 17957], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 46400], 80.00th=[ 61604], 90.00th=[ 80217], 95.00th=[102237], | 99.00th=[154141], 99.50th=[198181], 99.90th=[312476], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 7, max= 111, per=25.34%, avg=55.24, stdev=20.20, samples=220 iops : min= 1, max= 27, avg=13.18, stdev= 5.08, samples=220 lat (usec) : 50=0.36%, 100=3.39%, 250=0.46%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=5.34%, 4=3.52%, 10=6.80%, 20=12.21%, 50=42.35% lat (msec) : 100=21.58%, 250=3.71%, 500=0.10%, 750=0.03% cpu : usr=0.10%, sys=6.12%, ctx=6734, majf=0, minf=20 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=209KiB/s (214kB/s), 52.5KiB/s-53.7KiB/s (53.7kB/s-55.0kB/s), io=23.4MiB (24.6MB), run=112668-114848msec WRITE: bw=219KiB/s (224kB/s), 54.5KiB/s-56.1KiB/s (55.8kB/s-57.4kB/s), io=24.6MiB (25.7MB), run=112668-114848msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143892: Mon Jul 13 14:28:56 2026 read: IOPS=6, BW=25.3KiB/s (25.9kB/s)(5992KiB/237109msec) clat (msec): min=5, max=776, avg=30.88, stdev=36.49 lat (msec): min=5, max=776, avg=30.88, stdev=36.49 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 42], 90.00th=[ 68], 95.00th=[ 90], | 99.00th=[ 155], 99.50th=[ 230], 99.90th=[ 330], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 143, per=27.26%, avg=27.54, stdev=19.19, samples=422 iops : min= 1, max= 35, avg= 6.26, stdev= 4.82, samples=422 write: IOPS=6, BW=26.6KiB/s (27.2kB/s)(6296KiB/237109msec); 0 zone resets clat (msec): min=31, max=429, avg=121.17, stdev=56.31 lat (msec): min=31, max=429, avg=121.17, stdev=56.31 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 54], 10.00th=[ 62], 20.00th=[ 74], | 30.00th=[ 86], 40.00th=[ 96], 50.00th=[ 108], 60.00th=[ 124], | 70.00th=[ 142], 80.00th=[ 165], 90.00th=[ 197], 95.00th=[ 226], | 99.00th=[ 296], 99.50th=[ 363], 99.90th=[ 409], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 7, max= 64, per=24.97%, avg=26.22, stdev=12.05, samples=465 iops : min= 1, max= 16, avg= 5.93, stdev= 3.08, samples=465 lat (msec) : 10=6.71%, 20=18.16%, 50=17.61%, 100=26.86%, 250=29.13% lat (msec) : 500=1.50%, 1000=0.03% cpu : usr=0.05%, sys=1.47%, ctx=5182, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143893: Mon Jul 13 14:28:56 2026 read: IOPS=6, BW=25.0KiB/s (25.6kB/s)(5940KiB/237502msec) clat (msec): min=4, max=787, avg=29.60, stdev=33.54 lat (msec): min=4, max=787, avg=29.61, stdev=33.54 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 41], 90.00th=[ 65], 95.00th=[ 85], | 99.00th=[ 144], 99.50th=[ 159], 99.90th=[ 251], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 95, per=27.78%, avg=28.06, stdev=18.93, samples=410 iops : min= 1, max= 23, avg= 6.40, stdev= 4.78, samples=410 write: IOPS=6, BW=26.7KiB/s (27.4kB/s)(6348KiB/237502msec); 0 zone resets clat (msec): min=31, max=393, avg=121.83, stdev=57.89 lat (msec): min=31, max=393, avg=121.83, stdev=57.89 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 74], | 30.00th=[ 85], 40.00th=[ 96], 50.00th=[ 108], 60.00th=[ 123], | 70.00th=[ 142], 80.00th=[ 165], 90.00th=[ 205], 95.00th=[ 239], | 99.00th=[ 305], 99.50th=[ 342], 99.90th=[ 368], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 7, max= 71, per=24.99%, avg=26.24, stdev=11.96, samples=467 iops : min= 1, max= 17, avg= 5.94, stdev= 3.06, samples=467 lat (msec) : 10=5.70%, 20=19.43%, 50=17.74%, 100=26.37%, 250=28.81% lat (msec) : 500=1.92%, 1000=0.03% cpu : usr=0.05%, sys=1.45%, ctx=5217, 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=143894: Mon Jul 13 14:28:56 2026 read: IOPS=6, BW=25.4KiB/s (26.0kB/s)(6028KiB/237356msec) clat (msec): min=4, max=302, avg=31.81, stdev=31.58 lat (msec): min=4, max=302, avg=31.81, stdev=31.58 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 46], 90.00th=[ 71], 95.00th=[ 89], | 99.00th=[ 159], 99.50th=[ 226], 99.90th=[ 247], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 7, max= 117, per=26.47%, avg=26.74, stdev=18.08, samples=436 iops : min= 1, max= 29, avg= 6.06, stdev= 4.58, samples=436 write: IOPS=6, BW=26.4KiB/s (27.0kB/s)(6260KiB/237356msec); 0 zone resets clat (msec): min=29, max=1078, avg=120.95, stdev=61.30 lat (msec): min=29, max=1078, avg=120.96, stdev=61.30 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 54], 10.00th=[ 62], 20.00th=[ 74], | 30.00th=[ 85], 40.00th=[ 95], 50.00th=[ 108], 60.00th=[ 123], | 70.00th=[ 140], 80.00th=[ 161], 90.00th=[ 194], 95.00th=[ 230], | 99.00th=[ 313], 99.50th=[ 342], 99.90th=[ 430], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 64, per=24.90%, avg=26.15, stdev=12.33, samples=463 iops : min= 1, max= 16, avg= 5.92, stdev= 3.16, samples=463 lat (msec) : 10=5.60%, 20=18.33%, 50=17.97%, 100=27.80%, 250=28.87% lat (msec) : 500=1.40%, 2000=0.03% cpu : usr=0.04%, sys=1.49%, ctx=5182, 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=143895: Mon Jul 13 14:28:56 2026 read: IOPS=6, BW=25.9KiB/s (26.5kB/s)(6052KiB/233632msec) clat (msec): min=4, max=304, avg=30.12, stdev=28.94 lat (msec): min=4, max=304, avg=30.13, stdev=28.94 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 42], 90.00th=[ 66], 95.00th=[ 93], | 99.00th=[ 140], 99.50th=[ 167], 99.90th=[ 249], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 7, max= 93, per=28.18%, avg=28.46, stdev=18.87, samples=413 iops : min= 1, max= 23, avg= 6.50, stdev= 4.77, samples=413 write: IOPS=6, BW=26.7KiB/s (27.3kB/s)(6236KiB/233632msec); 0 zone resets clat (msec): min=33, max=990, avg=120.55, stdev=60.76 lat (msec): min=33, max=990, avg=120.55, stdev=60.76 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 53], 10.00th=[ 61], 20.00th=[ 72], | 30.00th=[ 84], 40.00th=[ 95], 50.00th=[ 108], 60.00th=[ 122], | 70.00th=[ 140], 80.00th=[ 165], 90.00th=[ 199], 95.00th=[ 232], | 99.00th=[ 309], 99.50th=[ 338], 99.90th=[ 397], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 64, per=25.17%, avg=26.43, stdev=12.24, samples=457 iops : min= 1, max= 16, avg= 5.99, stdev= 3.13, samples=457 lat (msec) : 10=5.89%, 20=19.21%, 50=18.33%, 100=26.73%, 250=28.32% lat (msec) : 500=1.50%, 1000=0.03% cpu : usr=0.05%, sys=1.51%, ctx=5288, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=101KiB/s (104kB/s), 25.0KiB/s-25.9KiB/s (25.6kB/s-26.5kB/s), io=23.4MiB (24.6MB), run=233632-237502msec WRITE: bw=106KiB/s (108kB/s), 26.4KiB/s-26.7KiB/s (27.0kB/s-27.4kB/s), io=24.6MiB (25.7MB), run=233632-237502msec 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=143948: Mon Jul 13 14:29:45 2026 read: IOPS=11, BW=187KiB/s (191kB/s)(5920KiB/31716msec) clat (usec): min=29, max=222045, avg=43569.50, stdev=34724.98 lat (usec): min=29, max=222046, avg=43582.59, stdev=34725.29 clat percentiles (usec): | 1.00th=[ 35], 5.00th=[ 53], 10.00th=[ 60], 20.00th=[ 98], | 30.00th=[ 24511], 40.00th=[ 33817], 50.00th=[ 40633], 60.00th=[ 49021], | 70.00th=[ 56886], 80.00th=[ 69731], 90.00th=[ 86508], 95.00th=[103285], | 99.00th=[139461], 99.50th=[183501], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 63, max= 540, per=27.80%, avg=186.24, stdev=84.85, samples=62 iops : min= 3, max= 33, avg=10.89, stdev= 5.32, samples=62 write: IOPS=12, BW=201KiB/s (206kB/s)(6368KiB/31716msec); 0 zone resets clat (usec): min=1570, max=233598, avg=39016.91, stdev=42120.04 lat (usec): min=1572, max=233600, avg=39023.06, stdev=42119.06 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1942], 10.00th=[ 2933], 20.00th=[ 5866], | 30.00th=[ 11469], 40.00th=[ 16319], 50.00th=[ 23462], 60.00th=[ 31851], | 70.00th=[ 47973], 80.00th=[ 66323], 90.00th=[ 98042], 95.00th=[129500], | 99.00th=[185598], 99.50th=[212861], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 51, max= 439, per=28.41%, avg=200.27, stdev=74.16, samples=62 iops : min= 3, max= 27, avg=11.79, stdev= 4.74, samples=62 lat (usec) : 50=2.08%, 100=7.55%, 250=0.52%, 500=0.26%, 750=0.13% lat (msec) : 2=3.26%, 4=3.52%, 10=7.55%, 20=10.81%, 50=30.47% lat (msec) : 100=26.17%, 250=7.68% cpu : usr=0.08%, sys=5.87%, ctx=1367, 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=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=143949: Mon Jul 13 14:29:45 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(5744KiB/35712msec) clat (usec): min=40, max=265826, avg=49614.11, stdev=37861.95 lat (usec): min=40, max=265828, avg=49616.19, stdev=37861.36 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 19792], | 30.00th=[ 31589], 40.00th=[ 38536], 50.00th=[ 47449], 60.00th=[ 53740], | 70.00th=[ 61080], 80.00th=[ 71828], 90.00th=[ 98042], 95.00th=[116917], | 99.00th=[175113], 99.50th=[185598], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 25, max= 380, per=24.28%, avg=162.70, stdev=71.17, samples=69 iops : min= 1, max= 23, avg= 9.42, stdev= 4.53, samples=69 write: IOPS=11, BW=183KiB/s (188kB/s)(6544KiB/35712msec); 0 zone resets clat (usec): min=1677, max=279552, avg=43575.21, stdev=49656.56 lat (usec): min=1677, max=279554, avg=43578.34, stdev=49656.08 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 1942], 10.00th=[ 3392], 20.00th=[ 6456], | 30.00th=[ 11338], 40.00th=[ 16909], 50.00th=[ 26870], 60.00th=[ 36439], | 70.00th=[ 49021], 80.00th=[ 74974], 90.00th=[105382], 95.00th=[145753], | 99.00th=[235930], 99.50th=[246416], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 31, max= 446, per=25.94%, avg=182.84, stdev=84.90, samples=70 iops : min= 1, max= 27, avg=10.66, stdev= 5.36, samples=70 lat (usec) : 50=0.39%, 100=6.51%, 250=0.78%, 1000=0.13% lat (msec) : 2=3.12%, 4=3.26%, 10=8.59%, 20=10.16%, 50=29.17% lat (msec) : 100=27.21%, 250=10.29%, 500=0.39% cpu : usr=0.08%, sys=5.53%, ctx=1498, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=143950: Mon Jul 13 14:29:45 2026 read: IOPS=11, BW=187KiB/s (191kB/s)(6256KiB/33454msec) clat (usec): min=33, max=197793, avg=44189.94, stdev=37506.12 lat (usec): min=33, max=197793, avg=44191.14, stdev=37506.13 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 53], 10.00th=[ 61], 20.00th=[ 89], | 30.00th=[ 23462], 40.00th=[ 32900], 50.00th=[ 40633], 60.00th=[ 48497], | 70.00th=[ 56886], 80.00th=[ 71828], 90.00th=[ 91751], 95.00th=[114820], | 99.00th=[152044], 99.50th=[183501], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 31, max= 415, per=28.21%, avg=189.00, stdev=75.92, samples=65 iops : min= 1, max= 25, avg=11.08, stdev= 4.77, samples=65 write: IOPS=11, BW=180KiB/s (185kB/s)(6032KiB/33454msec); 0 zone resets clat (usec): min=1518, max=281849, avg=42785.18, stdev=44436.01 lat (usec): min=1520, max=281850, avg=42789.89, stdev=44434.18 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1926], 10.00th=[ 2966], 20.00th=[ 6259], | 30.00th=[ 12125], 40.00th=[ 19530], 50.00th=[ 29754], 60.00th=[ 40633], | 70.00th=[ 52691], 80.00th=[ 68682], 90.00th=[105382], 95.00th=[128451], | 99.00th=[208667], 99.50th=[227541], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 31, max= 443, per=25.50%, avg=179.80, stdev=88.47, samples=65 iops : min= 1, max= 27, avg=10.49, stdev= 5.56, samples=65 lat (usec) : 50=2.34%, 100=7.94%, 250=1.56%, 500=0.26%, 750=0.13% lat (msec) : 2=2.99%, 4=3.65%, 10=7.03%, 20=7.94%, 50=30.21% lat (msec) : 100=26.56%, 250=9.24%, 500=0.13% cpu : usr=0.10%, sys=6.03%, ctx=1463, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=143951: Mon Jul 13 14:29:45 2026 read: IOPS=11, BW=180KiB/s (184kB/s)(6032KiB/33504msec) clat (usec): min=37, max=164454, avg=45186.01, stdev=36581.88 lat (usec): min=37, max=164456, avg=45187.39, stdev=36581.87 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 89], | 30.00th=[ 26870], 40.00th=[ 34866], 50.00th=[ 42206], 60.00th=[ 51643], | 70.00th=[ 59507], 80.00th=[ 71828], 90.00th=[ 94897], 95.00th=[115868], | 99.00th=[158335], 99.50th=[162530], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 30, max= 415, per=27.19%, avg=182.17, stdev=71.77, samples=64 iops : min= 1, max= 25, avg=10.64, stdev= 4.52, samples=64 write: IOPS=11, BW=187KiB/s (191kB/s)(6256KiB/33504msec); 0 zone resets clat (usec): min=1110, max=391444, avg=41965.11, stdev=50314.89 lat (usec): min=1111, max=391447, avg=41974.24, stdev=50310.48 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 1958], 10.00th=[ 2933], 20.00th=[ 6521], | 30.00th=[ 10028], 40.00th=[ 14484], 50.00th=[ 24249], 60.00th=[ 34341], | 70.00th=[ 48497], 80.00th=[ 71828], 90.00th=[108528], 95.00th=[133694], | 99.00th=[233833], 99.50th=[295699], 99.90th=[392168], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 31, max= 411, per=26.51%, avg=186.86, stdev=74.69, samples=65 iops : min= 1, max= 25, avg=10.94, stdev= 4.72, samples=65 lat (usec) : 50=1.69%, 100=8.33%, 250=0.78%, 500=0.13%, 1000=0.13% lat (msec) : 2=3.26%, 4=4.04%, 10=8.33%, 20=10.03%, 50=27.86% lat (msec) : 100=25.78%, 250=9.24%, 500=0.39% cpu : usr=0.04%, sys=5.53%, ctx=1428, 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=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=671KiB/s (687kB/s), 161KiB/s-187KiB/s (165kB/s-191kB/s), io=23.4MiB (24.5MB), run=31716-35712msec WRITE: bw=706KiB/s (723kB/s), 180KiB/s-201KiB/s (185kB/s-206kB/s), io=24.6MiB (25.8MB), run=31716-35712msec fio: pid=143946, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=143943: Mon Jul 13 14:30:27 2026 read: IOPS=4, BW=76.5KiB/s (78.4kB/s)(5920KiB/77347msec) clat (msec): min=6, max=395, avg=43.70, stdev=48.67 lat (msec): min=6, max=395, avg=43.70, stdev=48.67 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 63], 90.00th=[ 106], 95.00th=[ 142], | 99.00th=[ 271], 99.50th=[ 292], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 30, max= 319, per=30.93%, avg=88.47, stdev=58.60, samples=131 iops : min= 1, max= 19, avg= 4.79, stdev= 3.73, samples=131 write: IOPS=5, BW=82.3KiB/s (84.3kB/s)(6368KiB/77347msec); 0 zone resets clat (msec): min=32, max=574, avg=153.35, stdev=84.87 lat (msec): min=32, max=574, avg=153.36, stdev=84.87 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 61], 10.00th=[ 74], 20.00th=[ 90], | 30.00th=[ 103], 40.00th=[ 115], 50.00th=[ 129], 60.00th=[ 148], | 70.00th=[ 169], 80.00th=[ 209], 90.00th=[ 268], 95.00th=[ 330], | 99.00th=[ 451], 99.50th=[ 542], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 29, max= 191, per=27.58%, avg=84.13, stdev=43.55, samples=148 iops : min= 1, max= 11, avg= 4.51, stdev= 2.81, samples=148 lat (msec) : 10=1.95%, 20=14.58%, 50=21.22%, 100=19.92%, 250=35.55% lat (msec) : 500=6.51%, 750=0.26% cpu : usr=0.03%, sys=1.37%, ctx=1412, 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=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=143944: Mon Jul 13 14:30:27 2026 read: IOPS=4, BW=73.9KiB/s (75.7kB/s)(5744KiB/77700msec) clat (msec): min=4, max=343, avg=42.03, stdev=43.28 lat (msec): min=5, max=343, avg=42.04, stdev=43.28 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 40], 80.00th=[ 58], 90.00th=[ 107], 95.00th=[ 138], | 99.00th=[ 203], 99.50th=[ 232], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 29, max= 286, per=31.51%, avg=90.12, stdev=61.59, samples=124 iops : min= 1, max= 17, avg= 4.92, stdev= 3.83, samples=124 write: IOPS=5, BW=84.2KiB/s (86.2kB/s)(6544KiB/77700msec); 0 zone resets clat (msec): min=38, max=553, avg=152.69, stdev=86.30 lat (msec): min=38, max=553, avg=152.69, stdev=86.30 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 74], 20.00th=[ 87], | 30.00th=[ 101], 40.00th=[ 113], 50.00th=[ 127], 60.00th=[ 146], | 70.00th=[ 169], 80.00th=[ 205], 90.00th=[ 275], 95.00th=[ 334], | 99.00th=[ 439], 99.50th=[ 531], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 28, max= 224, per=27.74%, avg=84.60, stdev=43.30, samples=151 iops : min= 1, max= 14, avg= 4.54, stdev= 2.80, samples=151 lat (msec) : 10=1.95%, 20=14.45%, 50=20.44%, 100=21.09%, 250=34.90% lat (msec) : 500=6.77%, 750=0.39% cpu : usr=0.04%, sys=1.36%, ctx=1394, 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=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=143945: Mon Jul 13 14:30:27 2026 read: IOPS=5, BW=82.9KiB/s (84.9kB/s)(6256KiB/75460msec) clat (msec): min=6, max=410, avg=42.76, stdev=46.34 lat (msec): min=6, max=410, avg=42.76, stdev=46.34 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 58], 90.00th=[ 106], 95.00th=[ 134], | 99.00th=[ 234], 99.50th=[ 275], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 30, max= 320, per=32.88%, avg=94.02, stdev=68.95, samples=131 iops : min= 1, max= 20, avg= 5.14, stdev= 4.39, samples=131 write: IOPS=4, BW=79.9KiB/s (81.9kB/s)(6032KiB/75460msec); 0 zone resets clat (msec): min=38, max=808, avg=155.62, stdev=90.64 lat (msec): min=38, max=808, avg=155.62, stdev=90.64 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 66], 10.00th=[ 74], 20.00th=[ 90], | 30.00th=[ 97], 40.00th=[ 113], 50.00th=[ 131], 60.00th=[ 150], | 70.00th=[ 171], 80.00th=[ 209], 90.00th=[ 275], 95.00th=[ 334], | 99.00th=[ 468], 99.50th=[ 510], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 28, max= 223, per=26.83%, avg=81.82, stdev=40.73, samples=143 iops : min= 1, max= 13, avg= 4.37, stdev= 2.64, samples=143 lat (msec) : 10=2.08%, 20=15.49%, 50=22.01%, 100=21.35%, 250=31.77% lat (msec) : 500=7.03%, 750=0.13%, 1000=0.13% cpu : usr=0.06%, sys=1.46%, 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=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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=143946: Mon Jul 13 14:30:27 2026 read: IOPS=4, BW=66.9KiB/s (68.5kB/s)(4336KiB/64851msec) clat (msec): min=6, max=260, avg=53.40, stdev=51.60 lat (msec): min=6, max=260, avg=53.41, stdev=51.63 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 44], | 70.00th=[ 56], 80.00th=[ 77], 90.00th=[ 129], 95.00th=[ 171], | 99.00th=[ 253], 99.50th=[ 255], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 30, max= 279, per=28.79%, avg=82.33, stdev=53.06, samples=103 iops : min= 1, max= 17, avg= 4.39, stdev= 3.37, samples=103 write: IOPS=4, BW=73.5KiB/s (75.3kB/s)(4768KiB/64851msec); 0 zone resets clat (msec): min=31, max=564, avg=168.58, stdev=86.63 lat (msec): min=31, max=564, avg=168.59, stdev=86.63 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 69], 10.00th=[ 82], 20.00th=[ 102], | 30.00th=[ 114], 40.00th=[ 128], 50.00th=[ 140], 60.00th=[ 167], | 70.00th=[ 201], 80.00th=[ 230], 90.00th=[ 284], 95.00th=[ 351], | 99.00th=[ 443], 99.50th=[ 542], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 28, max= 191, per=24.72%, avg=75.40, stdev=38.82, samples=123 iops : min= 1, max= 11, avg= 3.94, stdev= 2.49, samples=123 lat (msec) : 10=1.05%, 20=8.95%, 50=22.81%, 100=18.07%, 250=39.82% lat (msec) : 500=8.77%, 750=0.35% cpu : usr=0.05%, sys=1.14%, ctx=961, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=272,298,0,0 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=286KiB/s (293kB/s), 66.9KiB/s-82.9KiB/s (68.5kB/s-84.9kB/s), io=21.7MiB (22.8MB), run=64851-77700msec WRITE: bw=305KiB/s (312kB/s), 73.5KiB/s-84.2KiB/s (75.3kB/s-86.2kB/s), io=23.2MiB (24.3MB), run=64851-77700msec 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=143975: Mon Jul 13 14:30:42 2026 read: IOPS=2, BW=2266KiB/s (2321kB/s)(7168KiB/3163msec) clat (msec): min=172, max=349, avg=268.89, stdev=65.50 lat (msec): min=172, max=349, avg=268.89, stdev=65.50 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 205], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 284], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 334], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 1835, max= 3938, per=55.94%, avg=2413.75, stdev=1020.04, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1619KiB/s (1658kB/s)(5120KiB/3163msec); 0 zone resets clat (msec): min=92, max=335, avg=216.60, stdev=89.05 lat (msec): min=92, max=335, avg=216.74, stdev=89.03 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 205], 60.00th=[ 205], | 70.00th=[ 255], 80.00th=[ 255], 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= 1851, max= 4063, per=43.62%, avg=2635.33, stdev=1238.40, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=50.00% cpu : usr=0.09%, sys=11.95%, ctx=212, 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=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=143976: Mon Jul 13 14:30:42 2026 read: IOPS=0, BW=432KiB/s (442kB/s)(2048KiB/4746msec) clat (msec): min=245, max=313, avg=279.88, stdev=48.19 lat (msec): min=245, max=313, avg=279.88, stdev=48.19 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 313], 90.00th=[ 313], 95.00th=[ 313], | 99.00th=[ 313], 99.50th=[ 313], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 1735, max= 1992, per=43.19%, avg=1863.50, stdev=181.73, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2158KiB/s (2209kB/s)(10.0MiB/4746msec); 0 zone resets clat (msec): min=70, max=1028, avg=411.96, stdev=290.74 lat (msec): min=71, max=1029, avg=412.06, stdev=290.75 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 138], | 30.00th=[ 194], 40.00th=[ 255], 50.00th=[ 313], 60.00th=[ 384], | 70.00th=[ 477], 80.00th=[ 584], 90.00th=[ 684], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 1996, max= 3992, per=48.86%, avg=2951.33, stdev=1019.53, samples=6 iops : min= 1, max= 3, avg= 2.17, stdev= 0.98, samples=6 lat (msec) : 100=8.33%, 250=25.00%, 500=41.67%, 750=16.67%, 2000=8.33% cpu : usr=0.04%, sys=8.70%, ctx=216, 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=143977: Mon Jul 13 14:30:42 2026 read: IOPS=1, BW=1626KiB/s (1665kB/s)(6144KiB/3778msec) clat (usec): min=563, max=539642, avg=219477.88, stdev=202680.05 lat (usec): min=565, max=539643, avg=219479.34, stdev=202679.89 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[ 4686], | 30.00th=[ 4686], 40.00th=[212861], 50.00th=[212861], 60.00th=[252707], | 70.00th=[308282], 80.00th=[308282], 90.00th=[541066], 95.00th=[541066], | 99.00th=[541066], 99.50th=[541066], 99.90th=[541066], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 1996, max= 4063, per=77.11%, avg=3327.33, stdev=1155.09, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1626KiB/s (1665kB/s)(6144KiB/3778msec); 0 zone resets clat (msec): min=108, max=982, avg=386.20, stdev=338.62 lat (msec): min=109, max=982, avg=386.42, stdev=338.68 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 128], | 30.00th=[ 128], 40.00th=[ 234], 50.00th=[ 234], 60.00th=[ 279], | 70.00th=[ 584], 80.00th=[ 584], 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= 1851, max= 3992, per=47.09%, avg=2844.50, stdev=1082.97, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.11%, sys=11.23%, ctx=249, 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=143978: Mon Jul 13 14:30:42 2026 read: IOPS=1, BW=1209KiB/s (1238kB/s)(5120KiB/4234msec) clat (usec): min=648, max=354083, avg=110782.50, stdev=159375.09 lat (usec): min=649, max=354084, avg=110783.73, stdev=159375.07 clat percentiles (usec): | 1.00th=[ 652], 5.00th=[ 652], 10.00th=[ 652], 20.00th=[ 652], | 30.00th=[ 2409], 40.00th=[ 2409], 50.00th=[ 2933], 60.00th=[ 2933], | 70.00th=[193987], 80.00th=[193987], 90.00th=[354419], 95.00th=[354419], | 99.00th=[354419], 99.50th=[354419], 99.90th=[354419], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 3923, max= 3992, per=91.71%, avg=3957.50, stdev=48.79, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1693KiB/s (1734kB/s)(7168KiB/4234msec); 0 zone resets clat (msec): min=160, max=923, avg=482.85, stdev=305.85 lat (msec): min=160, max=923, avg=482.95, stdev=305.85 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 169], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 359], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 818], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 1802, max= 4096, per=38.87%, avg=2348.20, stdev=981.18, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 lat (usec) : 750=8.33% lat (msec) : 4=16.67%, 250=25.00%, 500=25.00%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=7.82%, ctx=127, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4315KiB/s (4419kB/s), 432KiB/s-2266KiB/s (442kB/s-2321kB/s), io=20.0MiB (20.0MB), run=3163-4746msec WRITE: bw=6041KiB/s (6186kB/s), 1619KiB/s-2158KiB/s (1658kB/s-2209kB/s), io=28.0MiB (29.4MB), run=3163-4746msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143971: Mon Jul 13 14:30:42 2026 read: IOPS=1, BW=1678KiB/s (1719kB/s)(7168KiB/4271msec) clat (msec): min=96, max=562, avg=220.95, stdev=175.58 lat (msec): min=96, max=562, avg=220.95, stdev=175.58 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 104], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 132], 60.00th=[ 180], | 70.00th=[ 180], 80.00th=[ 355], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1787, max= 4079, per=61.66%, avg=2380.00, stdev=954.84, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1199KiB/s (1228kB/s)(5120KiB/4271msec); 0 zone resets clat (msec): min=328, max=657, avg=509.31, stdev=143.71 lat (msec): min=328, max=660, avg=510.01, stdev=144.50 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 518], 60.00th=[ 518], | 70.00th=[ 642], 80.00th=[ 642], 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= 2003, max= 2039, per=37.38%, avg=2020.00, stdev=17.70, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=33.33% cpu : usr=0.05%, sys=2.34%, ctx=66, 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=143972: Mon Jul 13 14:30:42 2026 read: IOPS=0, BW=386KiB/s (395kB/s)(2048KiB/5305msec) clat (msec): min=101, max=388, avg=245.31, stdev=202.75 lat (msec): min=101, max=388, avg=245.31, stdev=202.75 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 103], | 30.00th=[ 103], 40.00th=[ 103], 50.00th=[ 103], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 1625, max= 2003, per=46.99%, avg=1814.00, stdev=267.29, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1930KiB/s (1977kB/s)(10.0MiB/5305msec); 0 zone resets clat (msec): min=151, max=1018, avg=461.36, stdev=288.52 lat (msec): min=151, max=1018, avg=461.47, stdev=288.52 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 211], | 30.00th=[ 249], 40.00th=[ 300], 50.00th=[ 326], 60.00th=[ 472], | 70.00th=[ 477], 80.00th=[ 518], 90.00th=[ 894], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 1996, max= 4079, per=47.87%, avg=2586.86, stdev=990.02, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=3.58%, ctx=107, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143973: Mon Jul 13 14:30:42 2026 read: IOPS=1, BW=1332KiB/s (1364kB/s)(6144KiB/4613msec) clat (msec): min=69, max=293, avg=186.06, stdev=89.40 lat (msec): min=69, max=293, avg=186.06, stdev=89.40 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 94], | 30.00th=[ 94], 40.00th=[ 178], 50.00th=[ 178], 60.00th=[ 232], | 70.00th=[ 251], 80.00th=[ 251], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 2003, max= 4063, per=69.96%, avg=2700.33, stdev=1180.21, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1332KiB/s (1364kB/s)(6144KiB/4613msec); 0 zone resets clat (msec): min=282, max=713, avg=514.96, stdev=142.57 lat (msec): min=282, max=715, avg=515.42, stdev=143.15 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 514], 50.00th=[ 514], 60.00th=[ 550], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 1996, max= 2039, per=37.35%, avg=2018.25, stdev=21.90, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=16.67%, 250=16.67%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=3.47%, ctx=78, 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=143974: Mon Jul 13 14:30:42 2026 read: IOPS=1, BW=1513KiB/s (1549kB/s)(5120KiB/3384msec) clat (msec): min=84, max=100, avg=91.00, stdev= 5.92 lat (msec): min=84, max=100, avg=91.00, stdev= 5.92 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 85], | 30.00th=[ 89], 40.00th=[ 89], 50.00th=[ 91], 60.00th=[ 91], | 70.00th=[ 92], 80.00th=[ 92], 90.00th=[ 101], 95.00th=[ 101], | 99.00th=[ 101], 99.50th=[ 101], 99.90th=[ 101], 99.95th=[ 101], | 99.99th=[ 101] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2118KiB/s (2169kB/s)(7168KiB/3384msec); 0 zone resets clat (msec): min=161, max=928, avg=410.38, stdev=303.92 lat (msec): min=161, max=928, avg=411.70, stdev=305.58 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 201], | 30.00th=[ 255], 40.00th=[ 255], 50.00th=[ 279], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 760], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 1996, max= 3512, per=42.89%, avg=2317.80, stdev=667.83, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=33.33%, 250=25.00%, 500=25.00%, 1000=16.67% cpu : usr=0.09%, sys=3.37%, ctx=49, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3861KiB/s (3953kB/s), 386KiB/s-1678KiB/s (395kB/s-1719kB/s), io=20.0MiB (20.0MB), run=3384-5305msec WRITE: bw=5405KiB/s (5534kB/s), 1199KiB/s-2118KiB/s (1228kB/s-2169kB/s), io=28.0MiB (29.4MB), run=3384-5305msec 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=143986: Mon Jul 13 14:30:58 2026 read: IOPS=0, BW=3148KiB/s (3224kB/s)(12.0MiB/3903msec) clat (msec): min=757, max=2081, avg=1252.85, stdev=721.89 lat (msec): min=757, max=2081, avg=1252.86, stdev=721.89 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 2089], 80.00th=[ 2089], 90.00th=[ 2089], 95.00th=[ 2089], | 99.00th=[ 2089], 99.50th=[ 2089], 99.90th=[ 2089], 99.95th=[ 2089], | 99.99th=[ 2089] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.15%, ctx=36, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143987: Mon Jul 13 14:30:58 2026 read: IOPS=0, BW=950KiB/s (973kB/s)(4096KiB/4311msec) clat (nsec): min=1008.7M, max=1008.7M, avg=1008670041.00, stdev= 0.00 lat (nsec): min=1008.7M, max=1008.7M, avg=1008673575.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1900KiB/s (1946kB/s)(8192KiB/4311msec); 0 zone resets clat (msec): min=1511, max=1718, avg=1615.21, stdev=146.13 lat (msec): min=1512, max=1719, avg=1615.64, stdev=146.19 clat percentiles (msec): | 1.00th=[ 1519], 5.00th=[ 1519], 10.00th=[ 1519], 20.00th=[ 1519], | 30.00th=[ 1519], 40.00th=[ 1519], 50.00th=[ 1519], 60.00th=[ 1720], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=2.37%, ctx=40, 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=143988: Mon Jul 13 14:30:58 2026 write: IOPS=1, BW=5322KiB/s (5450kB/s)(12.0MiB/2309msec); 0 zone resets clat (msec): min=455, max=1203, avg=724.26, stdev=416.28 lat (msec): min=456, max=1205, avg=725.09, stdev=417.03 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 514], 50.00th=[ 514], 60.00th=[ 514], | 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= 6177, max= 8159, per=94.30%, avg=7168.00, stdev=1401.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.29%, ctx=48, 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=143989: Mon Jul 13 14:30:58 2026 write: IOPS=1, BW=4190KiB/s (4290kB/s)(12.0MiB/2933msec); 0 zone resets clat (msec): min=506, max=1296, avg=934.99, stdev=399.17 lat (msec): min=506, max=1296, avg=935.51, stdev=399.11 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 6177, max= 8015, per=93.36%, avg=7096.00, stdev=1299.66, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.43%, ctx=43, 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=3801KiB/s (3892kB/s), 950KiB/s-3148KiB/s (973kB/s-3224kB/s), io=16.0MiB (16.8MB), run=3903-4311msec WRITE: bw=7601KiB/s (7783kB/s), 1900KiB/s-5322KiB/s (1946kB/s-5450kB/s), io=32.0MiB (33.6MB), run=2309-4311msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143991: Mon Jul 13 14:30:58 2026 read: IOPS=1, BW=4438KiB/s (4544kB/s)(12.0MiB/2769msec) clat (msec): min=895, max=961, avg=918.64, stdev=36.85 lat (msec): min=898, max=961, avg=920.75, stdev=35.03 clat percentiles (msec): | 1.00th=[ 894], 5.00th=[ 894], 10.00th=[ 894], 20.00th=[ 894], | 30.00th=[ 894], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8143, max= 8159, per=100.00%, avg=8151.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=13.04%, ctx=220, 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=143992: Mon Jul 13 14:30:58 2026 read: IOPS=0, BW=1130KiB/s (1157kB/s)(4096KiB/3625msec) clat (nsec): min=874923k, max=874923k, avg=874922542.00, stdev= 0.00 lat (nsec): min=874925k, max=874925k, avg=874924812.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2260KiB/s (2314kB/s)(8192KiB/3625msec); 0 zone resets clat (msec): min=1128, max=1598, avg=1363.59, stdev=332.52 lat (msec): min=1149, max=1599, avg=1374.18, stdev=318.03 clat percentiles (msec): | 1.00th=[ 1133], 5.00th=[ 1133], 10.00th=[ 1133], 20.00th=[ 1133], | 30.00th=[ 1133], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1603], | 70.00th=[ 1603], 80.00th=[ 1603], 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= 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 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.08%, sys=3.09%, ctx=154, 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=143993: Mon Jul 13 14:30:58 2026 write: IOPS=0, BW=3565KiB/s (3650kB/s)(12.0MiB/3447msec); 0 zone resets clat (msec): min=378, max=1574, avg=1142.10, stdev=663.26 lat (msec): min=378, max=1590, avg=1148.63, stdev=669.09 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 1469], 50.00th=[ 1469], 60.00th=[ 1469], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 7968, max= 8126, per=100.00%, avg=8047.00, stdev=111.72, 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=0.03%, sys=4.79%, ctx=58, 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=143994: Mon Jul 13 14:30:58 2026 write: IOPS=0, BW=3016KiB/s (3089kB/s)(12.0MiB/4074msec); 0 zone resets clat (msec): min=225, max=2879, avg=1355.04, stdev=1370.75 lat (msec): min=226, max=2880, avg=1357.52, stdev=1369.67 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.00%, ctx=47, 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=4520KiB/s (4628kB/s), 1130KiB/s-4438KiB/s (1157kB/s-4544kB/s), io=16.0MiB (16.8MB), run=2769-3625msec WRITE: bw=8043KiB/s (8236kB/s), 2260KiB/s-3565KiB/s (2314kB/s-3650kB/s), io=32.0MiB (33.6MB), run=3447-4074msec