== sanity test 398b: DIO and buffer IO race ============== 15:36:57 (1786736217) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.96004 s, 8.4 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=143873: Fri Aug 14 15:40:39 2026 read: IOPS=7, BW=30.2KiB/s (30.0kB/s)(5992KiB/198178msec) clat (usec): min=30, max=53596k, avg=82241.31, stdev=1384076.87 lat (usec): min=30, max=53596k, avg=82245.21, stdev=1384076.75 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 57], 10.00th=[ 120], | 20.00th=[ 20317], 30.00th=[ 27395], 40.00th=[ 32637], | 50.00th=[ 40633], 60.00th=[ 48497], 70.00th=[ 58459], | 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[ 105382], | 99.00th=[ 156238], 99.50th=[ 214959], 99.90th=[ 583009], | 99.95th=[17112761], 99.99th=[17112761] bw ( KiB/s): min= 7, max= 95, per=34.39%, avg=41.27, stdev=18.91, samples=283 iops : min= 1, max= 23, avg= 9.69, stdev= 4.78, samples=283 write: IOPS=7, BW=31.8KiB/s (32.5kB/s)(6296KiB/198178msec); 0 zone resets clat (usec): min=1012, max=454747, avg=47547.33, stdev=49592.03 lat (usec): min=1013, max=454749, avg=47551.86, stdev=49595.70 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1319], 10.00th=[ 1582], 20.00th=[ 4752], | 30.00th=[ 8979], 40.00th=[ 20317], 50.00th=[ 33817], 60.00th=[ 47973], | 70.00th=[ 62653], 80.00th=[ 83362], 90.00th=[114820], 95.00th=[143655], | 99.00th=[212861], 99.50th=[233833], 99.90th=[329253], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 7, max= 135, per=34.44%, avg=43.05, stdev=20.51, samples=285 iops : min= 1, max= 33, avg=10.13, stdev= 5.17, samples=285 lat (usec) : 50=0.59%, 100=4.20%, 250=0.20%, 500=0.13%, 1000=0.03% lat (msec) : 2=6.15%, 4=3.26%, 10=7.03%, 20=8.30%, 50=31.80% lat (msec) : 100=28.35%, 250=9.70%, 500=0.20%, 750=0.03%, >=2000=0.03% cpu : usr=0.05%, sys=3.61%, ctx=6334, 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=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=143874: Fri Aug 14 15:40:39 2026 read: IOPS=7, BW=29.7KiB/s (30.5kB/s)(5940KiB/199751msec) clat (usec): min=24, max=522357, avg=46368.60, stdev=37792.64 lat (usec): min=24, max=522359, avg=46376.20, stdev=37800.15 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 56], 10.00th=[ 108], 20.00th=[ 20841], | 30.00th=[ 26870], 40.00th=[ 33424], 50.00th=[ 40633], 60.00th=[ 47973], | 70.00th=[ 56361], 80.00th=[ 68682], 90.00th=[ 87557], 95.00th=[105382], | 99.00th=[170918], 99.50th=[227541], 99.90th=[346031], 99.95th=[522191], | 99.99th=[522191] bw ( KiB/s): min= 7, max= 95, per=33.28%, avg=39.94, stdev=18.83, samples=288 iops : min= 1, max= 23, avg= 9.35, stdev= 4.75, samples=288 write: IOPS=7, BW=31.8KiB/s (32.5kB/s)(6348KiB/199751msec); 0 zone resets clat (usec): min=870, max=53797k, avg=82364.47, stdev=1350182.20 lat (usec): min=871, max=53797k, avg=82366.53, stdev=1350182.20 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1319], 10.00th=[ 1631], | 20.00th=[ 4817], 30.00th=[ 10421], 40.00th=[ 21890], | 50.00th=[ 34866], 60.00th=[ 50070], 70.00th=[ 65274], | 80.00th=[ 82314], 90.00th=[ 111674], 95.00th=[ 141558], | 99.00th=[ 246416], 99.50th=[ 304088], 99.90th=[ 400557], | 99.95th=[17112761], 99.99th=[17112761] bw ( KiB/s): min= 7, max= 134, per=34.33%, avg=42.91, stdev=19.14, samples=286 iops : min= 1, max= 33, avg=10.10, stdev= 4.84, samples=286 lat (usec) : 50=0.85%, 100=3.97%, 250=0.36%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=6.05%, 4=3.12%, 10=6.25%, 20=8.33%, 50=32.06% lat (msec) : 100=28.81%, 250=9.38%, 500=0.55%, 750=0.03%, >=2000=0.03% cpu : usr=0.04%, sys=3.63%, ctx=6212, 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=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=143875: Fri Aug 14 15:40:39 2026 read: IOPS=7, BW=30.3KiB/s (30.0kB/s)(6028KiB/199250msec) clat (usec): min=32, max=343745, avg=46785.28, stdev=36988.82 lat (usec): min=32, max=343746, avg=46786.58, stdev=36988.92 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 55], 10.00th=[ 92], 20.00th=[ 20317], | 30.00th=[ 26346], 40.00th=[ 32375], 50.00th=[ 39060], 60.00th=[ 46924], | 70.00th=[ 56361], 80.00th=[ 69731], 90.00th=[ 93848], 95.00th=[114820], | 99.00th=[177210], 99.50th=[198181], 99.90th=[291505], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 7, max= 128, per=34.32%, avg=41.19, stdev=19.76, samples=285 iops : min= 1, max= 32, avg= 9.67, stdev= 4.99, samples=285 write: IOPS=7, BW=31.4KiB/s (32.2kB/s)(6260KiB/199250msec); 0 zone resets clat (usec): min=991, max=53967k, avg=82180.02, stdev=1364025.57 lat (usec): min=992, max=53967k, avg=82185.07, stdev=1364025.39 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1303], 10.00th=[ 1532], | 20.00th=[ 4555], 30.00th=[ 9241], 40.00th=[ 20841], | 50.00th=[ 33817], 60.00th=[ 47449], 70.00th=[ 63177], | 80.00th=[ 81265], 90.00th=[ 111674], 95.00th=[ 139461], | 99.00th=[ 229639], 99.50th=[ 256902], 99.90th=[ 843056], | 99.95th=[17112761], 99.99th=[17112761] bw ( KiB/s): min= 7, max= 135, per=34.21%, avg=42.77, stdev=19.47, samples=285 iops : min= 1, max= 33, avg=10.06, stdev= 4.94, samples=285 lat (usec) : 50=1.07%, 100=4.04%, 250=0.03%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=6.15%, 4=3.29%, 10=6.67%, 20=8.27%, 50=32.71% lat (msec) : 100=27.15%, 250=9.99%, 500=0.42%, 1000=0.03%, >=2000=0.03% cpu : usr=0.04%, sys=3.57%, ctx=6441, 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=143876: Fri Aug 14 15:40:39 2026 read: IOPS=7, BW=31.1KiB/s (31.8kB/s)(6052KiB/194643msec) clat (usec): min=30, max=242215, avg=44727.18, stdev=33873.81 lat (usec): min=30, max=242216, avg=44728.37, stdev=33873.85 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 19006], | 30.00th=[ 26084], 40.00th=[ 32113], 50.00th=[ 38536], 60.00th=[ 46400], | 70.00th=[ 55313], 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[109577], | 99.00th=[149947], 99.50th=[168821], 99.90th=[231736], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 7, max= 103, per=35.89%, avg=43.07, stdev=19.16, samples=274 iops : min= 1, max= 25, avg=10.13, stdev= 4.84, samples=274 write: IOPS=8, BW=32.0KiB/s (32.8kB/s)(6236KiB/194643msec); 0 zone resets clat (usec): min=1082, max=53892k, avg=81305.47, stdev=1364648.80 lat (usec): min=1083, max=53892k, avg=81307.30, stdev=1364648.79 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1352], 10.00th=[ 1991], | 20.00th=[ 4883], 30.00th=[ 9372], 40.00th=[ 20055], | 50.00th=[ 32113], 60.00th=[ 45351], 70.00th=[ 62129], | 80.00th=[ 83362], 90.00th=[ 111674], 95.00th=[ 139461], | 99.00th=[ 200279], 99.50th=[ 240124], 99.90th=[ 683672], | 99.95th=[17112761], 99.99th=[17112761] bw ( KiB/s): min= 7, max= 110, per=34.95%, avg=43.69, stdev=18.95, samples=278 iops : min= 1, max= 27, avg=10.30, stdev= 4.79, samples=278 lat (usec) : 50=0.94%, 100=5.27%, 250=0.33%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.18%, 4=3.74%, 10=7.19%, 20=7.85%, 50=32.75% lat (msec) : 100=26.63%, 250=9.83%, 500=0.13%, 750=0.03%, >=2000=0.03% cpu : usr=0.04%, sys=3.54%, ctx=6253, 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=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=120KiB/s (123kB/s), 29.7KiB/s-31.1KiB/s (30.5kB/s-31.8kB/s), io=23.4MiB (24.6MB), run=194643-199751msec WRITE: bw=126KiB/s (129kB/s), 31.4KiB/s-32.0KiB/s (32.2kB/s-32.8kB/s), io=24.6MiB (25.7MB), run=194643-199751msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143867: Fri Aug 14 15:43:14 2026 read: IOPS=4, BW=16.9KiB/s (17.3kB/s)(5992KiB/355469msec) clat (msec): min=5, max=1648, avg=39.01, stdev=58.46 lat (msec): min=5, max=1648, avg=39.02, stdev=58.46 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 52], 90.00th=[ 86], 95.00th=[ 122], | 99.00th=[ 199], 99.50th=[ 271], 99.90th=[ 435], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 7, max= 96, per=35.18%, avg=23.57, stdev=16.54, samples=490 iops : min= 1, max= 24, avg= 5.25, stdev= 4.19, samples=490 write: IOPS=4, BW=17.7KiB/s (18.1kB/s)(6296KiB/355469msec); 0 zone resets clat (msec): min=34, max=54051, avg=188.42, stdev=1360.91 lat (msec): min=34, max=54051, avg=188.42, stdev=1360.91 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 91], | 30.00th=[ 103], 40.00th=[ 117], 50.00th=[ 133], 60.00th=[ 153], | 70.00th=[ 178], 80.00th=[ 211], 90.00th=[ 264], 95.00th=[ 317], | 99.00th=[ 430], 99.50th=[ 489], 99.90th=[ 625], 99.95th=[17113], | 99.99th=[17113] bw ( KiB/s): min= 7, max= 55, per=29.73%, avg=20.81, stdev=10.58, samples=580 iops : min= 1, max= 13, avg= 4.55, stdev= 2.69, samples=580 lat (msec) : 10=3.42%, 20=16.11%, 50=19.66%, 100=20.44%, 250=34.11% lat (msec) : 500=5.99%, 750=0.20%, 2000=0.03%, >=2000=0.03% cpu : usr=0.03%, sys=1.00%, ctx=5215, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143868: Fri Aug 14 15:43:14 2026 read: IOPS=4, BW=16.7KiB/s (17.1kB/s)(5940KiB/356241msec) clat (msec): min=4, max=1549, avg=37.89, stdev=55.09 lat (msec): min=4, max=1549, avg=37.89, stdev=55.09 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 50], 90.00th=[ 83], 95.00th=[ 120], | 99.00th=[ 188], 99.50th=[ 222], 99.90th=[ 451], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 7, max= 119, per=35.71%, avg=23.93, stdev=16.17, samples=478 iops : min= 1, max= 29, avg= 5.35, stdev= 4.06, samples=478 write: IOPS=4, BW=17.8KiB/s (18.2kB/s)(6348KiB/356241msec); 0 zone resets clat (msec): min=30, max=54050, avg=188.72, stdev=1355.42 lat (msec): min=30, max=54050, avg=188.72, stdev=1355.42 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 90], | 30.00th=[ 104], 40.00th=[ 117], 50.00th=[ 134], 60.00th=[ 153], | 70.00th=[ 176], 80.00th=[ 207], 90.00th=[ 264], 95.00th=[ 326], | 99.00th=[ 443], 99.50th=[ 498], 99.90th=[ 659], 99.95th=[17113], | 99.99th=[17113] bw ( KiB/s): min= 7, max= 64, per=29.75%, avg=20.83, stdev=10.44, samples=583 iops : min= 1, max= 16, avg= 4.56, stdev= 2.66, samples=583 lat (msec) : 10=2.93%, 20=16.70%, 50=19.79%, 100=19.60%, 250=34.51% lat (msec) : 500=6.22%, 750=0.20%, 2000=0.03%, >=2000=0.03% cpu : usr=0.03%, sys=1.01%, ctx=5239, 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=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=143869: Fri Aug 14 15:43:14 2026 read: IOPS=4, BW=16.0KiB/s (17.4kB/s)(6028KiB/355351msec) clat (msec): min=5, max=54045, avg=75.11, stdev=1391.88 lat (msec): min=5, max=54045, avg=75.11, stdev=1391.88 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 53], 90.00th=[ 91], 95.00th=[ 128], | 99.00th=[ 211], 99.50th=[ 253], 99.90th=[ 456], 99.95th=[17113], | 99.99th=[17113] bw ( KiB/s): min= 7, max= 126, per=34.12%, avg=22.86, stdev=17.16, samples=507 iops : min= 1, max= 31, avg= 5.07, stdev= 4.32, samples=507 write: IOPS=4, BW=17.6KiB/s (18.0kB/s)(6260KiB/355351msec); 0 zone resets clat (msec): min=39, max=1849, avg=154.44, stdev=91.52 lat (msec): min=39, max=1849, avg=154.44, stdev=91.52 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 90], | 30.00th=[ 103], 40.00th=[ 117], 50.00th=[ 132], 60.00th=[ 153], | 70.00th=[ 176], 80.00th=[ 207], 90.00th=[ 257], 95.00th=[ 305], | 99.00th=[ 460], 99.50th=[ 514], 99.90th=[ 642], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 63, per=29.82%, avg=20.87, stdev=10.42, samples=574 iops : min= 1, max= 15, avg= 4.57, stdev= 2.65, samples=574 lat (msec) : 10=3.26%, 20=16.08%, 50=19.40%, 100=20.83%, 250=34.44% lat (msec) : 500=5.70%, 750=0.23%, 2000=0.03%, >=2000=0.03% cpu : usr=0.03%, sys=0.99%, ctx=5106, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143870: Fri Aug 14 15:43:14 2026 read: IOPS=4, BW=17.0KiB/s (17.5kB/s)(6052KiB/355065msec) clat (msec): min=4, max=53865, avg=72.92, stdev=1384.43 lat (msec): min=4, max=53865, avg=72.92, stdev=1384.43 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 51], 90.00th=[ 87], 95.00th=[ 115], | 99.00th=[ 197], 99.50th=[ 241], 99.90th=[ 447], 99.95th=[17113], | 99.99th=[17113] bw ( KiB/s): min= 7, max= 103, per=35.84%, avg=24.01, stdev=17.14, samples=486 iops : min= 1, max= 25, avg= 5.36, stdev= 4.29, samples=486 write: IOPS=4, BW=17.6KiB/s (17.0kB/s)(6236KiB/355065msec); 0 zone resets clat (msec): min=36, max=1710, avg=156.66, stdev=92.58 lat (msec): min=36, max=1710, avg=156.68, stdev=92.60 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 67], 10.00th=[ 77], 20.00th=[ 92], | 30.00th=[ 104], 40.00th=[ 118], 50.00th=[ 134], 60.00th=[ 150], | 70.00th=[ 178], 80.00th=[ 209], 90.00th=[ 271], 95.00th=[ 326], | 99.00th=[ 464], 99.50th=[ 531], 99.90th=[ 659], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7, max= 55, per=29.34%, avg=20.54, stdev=10.32, samples=582 iops : min= 1, max= 13, avg= 4.48, stdev= 2.63, samples=582 lat (msec) : 10=2.99%, 20=16.70%, 50=20.08%, 100=19.60%, 250=34.41% lat (msec) : 500=5.76%, 750=0.39%, 2000=0.03%, >=2000=0.03% cpu : usr=0.04%, sys=0.99%, ctx=5116, 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=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=67.4KiB/s (69.0kB/s), 16.7KiB/s-17.0KiB/s (17.1kB/s-17.5kB/s), io=23.4MiB (24.6MB), run=355065-356241msec WRITE: bw=70.6KiB/s (72.3kB/s), 17.6KiB/s-17.8KiB/s (17.0kB/s-18.2kB/s), io=24.6MiB (25.7MB), run=355065-356241msec 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=143943: Fri Aug 14 15:43:53 2026 read: IOPS=14, BW=226KiB/s (231kB/s)(5920KiB/26200msec) clat (usec): min=30, max=370862, avg=36395.70, stdev=34909.21 lat (usec): min=30, max=370864, avg=36397.00, stdev=34909.16 clat percentiles (usec): | 1.00th=[ 37], 5.00th=[ 52], 10.00th=[ 57], 20.00th=[ 67], | 30.00th=[ 17957], 40.00th=[ 27132], 50.00th=[ 33162], 60.00th=[ 40633], | 70.00th=[ 47973], 80.00th=[ 59507], 90.00th=[ 76022], 95.00th=[ 88605], | 99.00th=[141558], 99.50th=[179307], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 60, max= 446, per=26.77%, avg=228.08, stdev=95.52, samples=50 iops : min= 3, max= 27, avg=13.54, stdev= 6.07, samples=50 write: IOPS=15, BW=243KiB/s (249kB/s)(6368KiB/26200msec); 0 zone resets clat (usec): min=1266, max=250983, avg=31944.29, stdev=37184.57 lat (usec): min=1267, max=250986, avg=31948.48, stdev=37188.64 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1778], 10.00th=[ 2245], 20.00th=[ 5342], | 30.00th=[ 7504], 40.00th=[ 10683], 50.00th=[ 16909], 60.00th=[ 24249], | 70.00th=[ 34866], 80.00th=[ 53740], 90.00th=[ 87557], 95.00th=[108528], | 99.00th=[168821], 99.50th=[193987], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 63, max= 535, per=27.59%, avg=247.20, stdev=100.53, samples=50 iops : min= 3, max= 33, avg=14.74, stdev= 6.39, samples=50 lat (usec) : 50=2.08%, 100=10.03%, 250=0.13%, 500=0.26%, 750=0.13% lat (msec) : 2=4.17%, 4=3.52%, 10=11.85%, 20=10.81%, 50=31.38% lat (msec) : 100=20.83%, 250=4.56%, 500=0.26% cpu : usr=0.08%, sys=6.03%, ctx=1307, 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=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: Fri Aug 14 15:43:53 2026 read: IOPS=13, BW=210KiB/s (215kB/s)(5744KiB/27334msec) clat (usec): min=34, max=251958, avg=37672.99, stdev=34700.72 lat (usec): min=34, max=251959, avg=37706.59, stdev=34684.67 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 50], 10.00th=[ 56], 20.00th=[ 67], | 30.00th=[ 17433], 40.00th=[ 27657], 50.00th=[ 34866], 60.00th=[ 42730], | 70.00th=[ 50594], 80.00th=[ 64750], 90.00th=[ 80217], 95.00th=[ 93848], | 99.00th=[152044], 99.50th=[185598], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 30, max= 508, per=24.95%, avg=212.62, stdev=108.37, samples=52 iops : min= 1, max= 31, avg=12.54, stdev= 6.80, samples=52 write: IOPS=14, BW=239KiB/s (245kB/s)(6544KiB/27334msec); 0 zone resets clat (usec): min=1452, max=277708, avg=33650.55, stdev=43356.52 lat (usec): min=1453, max=277710, avg=33652.49, stdev=43356.55 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1827], 10.00th=[ 1991], 20.00th=[ 3556], | 30.00th=[ 6521], 40.00th=[ 10028], 50.00th=[ 15926], 60.00th=[ 26870], | 70.00th=[ 36963], 80.00th=[ 55313], 90.00th=[ 87557], 95.00th=[124257], | 99.00th=[204473], 99.50th=[219153], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 63, max= 447, per=26.33%, avg=235.94, stdev=92.42, samples=53 iops : min= 3, max= 27, avg=14.04, stdev= 5.83, samples=53 lat (usec) : 50=2.47%, 100=9.90%, 250=0.13%, 750=0.13%, 1000=0.13% lat (msec) : 2=5.86%, 4=6.12%, 10=9.77%, 20=9.77%, 50=29.30% lat (msec) : 100=20.70%, 250=5.47%, 500=0.26% cpu : usr=0.07%, sys=6.00%, ctx=1317, 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=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: Fri Aug 14 15:43:53 2026 read: IOPS=13, BW=223KiB/s (228kB/s)(6256KiB/28107msec) clat (usec): min=23, max=238706, avg=38109.09, stdev=32893.06 lat (usec): min=23, max=238707, avg=38113.26, stdev=32892.42 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 49], 10.00th=[ 56], 20.00th=[ 68], | 30.00th=[ 19530], 40.00th=[ 28967], 50.00th=[ 35914], 60.00th=[ 43254], | 70.00th=[ 49546], 80.00th=[ 64226], 90.00th=[ 79168], 95.00th=[ 92799], | 99.00th=[131597], 99.50th=[173016], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 95, max= 447, per=26.22%, avg=223.42, stdev=87.90, samples=55 iops : min= 5, max= 27, avg=13.24, stdev= 5.55, samples=55 write: IOPS=13, BW=215KiB/s (220kB/s)(6032KiB/28107msec); 0 zone resets clat (usec): min=1182, max=301292, avg=34933.25, stdev=37431.45 lat (usec): min=1184, max=301294, avg=34935.20, stdev=37431.44 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1844], 10.00th=[ 2573], 20.00th=[ 5145], | 30.00th=[ 8717], 40.00th=[ 13566], 50.00th=[ 21890], 60.00th=[ 34341], | 70.00th=[ 47449], 80.00th=[ 58983], 90.00th=[ 83362], 95.00th=[105382], | 99.00th=[170918], 99.50th=[214959], 99.90th=[299893], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 31, max= 410, per=23.60%, avg=211.47, stdev=88.67, samples=55 iops : min= 1, max= 25, avg=12.47, stdev= 5.63, samples=55 lat (usec) : 50=2.99%, 100=8.59%, 250=0.52%, 500=0.13% lat (msec) : 2=3.91%, 4=4.17%, 10=9.77%, 20=8.46%, 50=32.81% lat (msec) : 100=23.83%, 250=4.69%, 500=0.13% cpu : usr=0.09%, sys=5.71%, ctx=1447, 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=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=143946: Fri Aug 14 15:43:53 2026 read: IOPS=13, BW=222KiB/s (227kB/s)(6032KiB/27193msec) clat (usec): min=34, max=158557, avg=34785.02, stdev=30528.18 lat (usec): min=34, max=158558, avg=34796.43, stdev=30537.16 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 46], 10.00th=[ 57], 20.00th=[ 66], | 30.00th=[ 3949], 40.00th=[ 26608], 50.00th=[ 34341], 60.00th=[ 42206], | 70.00th=[ 47973], 80.00th=[ 58983], 90.00th=[ 71828], 95.00th=[ 90702], | 99.00th=[120062], 99.50th=[149947], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 61, max= 509, per=25.95%, avg=221.09, stdev=99.69, samples=53 iops : min= 3, max= 31, avg=13.09, stdev= 6.30, samples=53 write: IOPS=14, BW=230KiB/s (236kB/s)(6256KiB/27193msec); 0 zone resets clat (usec): min=1245, max=209287, avg=35940.59, stdev=39790.88 lat (usec): min=1247, max=209290, avg=35942.43, stdev=39790.87 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1795], 10.00th=[ 2114], 20.00th=[ 5080], | 30.00th=[ 7701], 40.00th=[ 12125], 50.00th=[ 20579], 60.00th=[ 33817], | 70.00th=[ 45876], 80.00th=[ 63177], 90.00th=[ 86508], 95.00th=[123208], | 99.00th=[185598], 99.50th=[208667], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 63, max= 637, per=25.80%, avg=231.15, stdev=108.18, samples=53 iops : min= 3, max= 39, avg=13.74, stdev= 6.79, samples=53 lat (usec) : 50=3.26%, 100=10.55%, 250=0.39% lat (msec) : 2=4.95%, 4=4.04%, 10=10.16%, 20=8.33%, 50=31.25% lat (msec) : 100=21.74%, 250=5.34% cpu : usr=0.08%, sys=5.90%, ctx=1402, 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=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=852KiB/s (873kB/s), 210KiB/s-226KiB/s (215kB/s-231kB/s), io=23.4MiB (24.5MB), run=26200-28107msec WRITE: bw=897KiB/s (918kB/s), 215KiB/s-243KiB/s (220kB/s-249kB/s), io=24.6MiB (25.8MB), run=26200-28107msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143938: Fri Aug 14 15:44:33 2026 read: IOPS=5, BW=86.8KiB/s (88.8kB/s)(5920KiB/68237msec) clat (msec): min=6, max=290, avg=38.87, stdev=36.58 lat (msec): min=6, max=290, avg=38.87, stdev=36.58 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 52], 90.00th=[ 75], 95.00th=[ 111], | 99.00th=[ 192], 99.50th=[ 275], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 316, per=27.02%, avg=93.75, stdev=54.42, samples=124 iops : min= 1, max= 19, avg= 5.07, stdev= 3.43, samples=124 write: IOPS=5, BW=93.3KiB/s (95.6kB/s)(6368KiB/68237msec); 0 zone resets clat (msec): min=43, max=476, avg=134.86, stdev=70.23 lat (msec): min=43, max=476, avg=134.86, stdev=70.23 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 82], | 30.00th=[ 93], 40.00th=[ 105], 50.00th=[ 115], 60.00th=[ 128], | 70.00th=[ 146], 80.00th=[ 182], 90.00th=[ 234], 95.00th=[ 284], | 99.00th=[ 384], 99.50th=[ 451], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 30, max= 192, per=25.78%, avg=94.11, stdev=43.43, samples=133 iops : min= 1, max= 12, avg= 5.09, stdev= 2.78, samples=133 lat (msec) : 10=1.30%, 20=14.32%, 50=23.05%, 100=25.39%, 250=32.03% lat (msec) : 500=3.91% cpu : usr=0.04%, sys=1.41%, ctx=1403, 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=143939: Fri Aug 14 15:44:33 2026 read: IOPS=5, BW=83.4KiB/s (85.4kB/s)(5744KiB/68908msec) clat (msec): min=6, max=349, avg=36.72, stdev=33.22 lat (msec): min=6, max=349, avg=36.72, stdev=33.22 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 52], 90.00th=[ 72], 95.00th=[ 94], | 99.00th=[ 153], 99.50th=[ 211], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 31, max= 255, per=27.85%, avg=96.64, stdev=62.36, samples=116 iops : min= 1, max= 15, avg= 5.26, stdev= 3.92, samples=116 write: IOPS=5, BW=94.0KiB/s (97.2kB/s)(6544KiB/68908msec); 0 zone resets clat (msec): min=39, max=437, avg=136.08, stdev=66.60 lat (msec): min=39, max=437, avg=136.08, stdev=66.60 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 63], 10.00th=[ 71], 20.00th=[ 83], | 30.00th=[ 94], 40.00th=[ 109], 50.00th=[ 121], 60.00th=[ 136], | 70.00th=[ 148], 80.00th=[ 178], 90.00th=[ 222], 95.00th=[ 279], | 99.00th=[ 363], 99.50th=[ 372], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 30, max= 247, per=25.71%, avg=93.82, stdev=41.04, samples=136 iops : min= 1, max= 15, avg= 5.07, stdev= 2.63, samples=136 lat (msec) : 10=2.60%, 20=11.72%, 50=23.96%, 100=24.22%, 250=33.20% lat (msec) : 500=4.30% cpu : usr=0.04%, sys=1.31%, ctx=1288, 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=143940: Fri Aug 14 15:44:33 2026 read: IOPS=5, BW=93.9KiB/s (96.2kB/s)(6256KiB/66600msec) clat (msec): min=6, max=314, avg=35.46, stdev=32.28 lat (msec): min=6, max=314, avg=35.47, stdev=32.29 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 47], 90.00th=[ 73], 95.00th=[ 94], | 99.00th=[ 155], 99.50th=[ 224], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 350, per=29.92%, avg=103.81, stdev=68.18, samples=119 iops : min= 1, max= 21, avg= 5.72, stdev= 4.31, samples=119 write: IOPS=5, BW=90.6KiB/s (92.7kB/s)(6032KiB/66600msec); 0 zone resets clat (msec): min=38, max=473, avg=139.40, stdev=65.57 lat (msec): min=38, max=473, avg=139.40, stdev=65.57 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 67], 10.00th=[ 79], 20.00th=[ 90], | 30.00th=[ 101], 40.00th=[ 112], 50.00th=[ 123], 60.00th=[ 138], | 70.00th=[ 157], 80.00th=[ 178], 90.00th=[ 218], 95.00th=[ 275], | 99.00th=[ 372], 99.50th=[ 397], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 30, max= 191, per=24.83%, avg=90.64, stdev=38.58, samples=130 iops : min= 1, max= 11, avg= 4.88, stdev= 2.50, samples=130 lat (msec) : 10=1.04%, 20=15.23%, 50=25.52%, 100=21.48%, 250=33.33% lat (msec) : 500=3.39% cpu : usr=0.04%, sys=1.44%, ctx=1337, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143941: Fri Aug 14 15:44:33 2026 read: IOPS=5, BW=88.1KiB/s (90.2kB/s)(6032KiB/68449msec) clat (msec): min=7, max=383, avg=38.06, stdev=39.82 lat (msec): min=7, max=383, avg=38.06, stdev=39.82 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 86], 95.00th=[ 115], | 99.00th=[ 190], 99.50th=[ 284], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 30, max= 313, per=28.56%, avg=99.12, stdev=67.43, samples=119 iops : min= 1, max= 19, avg= 5.48, stdev= 4.29, samples=119 write: IOPS=5, BW=91.4KiB/s (93.6kB/s)(6256KiB/68449msec); 0 zone resets clat (msec): min=41, max=579, avg=137.85, stdev=64.78 lat (msec): min=41, max=579, avg=137.85, stdev=64.79 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 62], 10.00th=[ 72], 20.00th=[ 86], | 30.00th=[ 97], 40.00th=[ 112], 50.00th=[ 129], 60.00th=[ 142], | 70.00th=[ 159], 80.00th=[ 180], 90.00th=[ 215], 95.00th=[ 266], | 99.00th=[ 376], 99.50th=[ 409], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 30, max= 191, per=24.95%, avg=91.07, stdev=39.37, samples=135 iops : min= 1, max= 11, avg= 4.97, stdev= 2.56, samples=135 lat (msec) : 10=1.82%, 20=14.19%, 50=24.74%, 100=21.22%, 250=34.51% lat (msec) : 500=3.39%, 750=0.13% cpu : usr=0.04%, sys=1.36%, ctx=1330, 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=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=348KiB/s (356kB/s), 83.4KiB/s-93.9KiB/s (85.4kB/s-96.2kB/s), io=23.4MiB (24.5MB), run=66600-68908msec WRITE: bw=366KiB/s (374kB/s), 90.6KiB/s-94.0KiB/s (92.7kB/s-97.2kB/s), io=24.6MiB (25.8MB), run=66600-68908msec 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=143967: Fri Aug 14 15:44:51 2026 read: IOPS=2, BW=2284KiB/s (2338kB/s)(7168KiB/3139msec) clat (msec): min=133, max=334, avg=254.12, stdev=68.49 lat (msec): min=133, max=334, avg=254.12, stdev=68.49 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 205], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 262], 60.00th=[ 288], | 70.00th=[ 288], 80.00th=[ 313], 90.00th=[ 334], 95.00th=[ 334], | 99.00th=[ 334], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 1939, max= 3225, per=43.77%, avg=2239.20, stdev=552.59, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1631KiB/s (1670kB/s)(5120KiB/3139msec); 0 zone resets clat (msec): min=117, max=427, avg=258.96, stdev=118.32 lat (msec): min=117, max=428, avg=259.16, stdev=118.54 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 118], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 1939, max= 4096, per=37.45%, avg=2682.00, stdev=1225.09, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 250=41.67%, 500=58.33% cpu : usr=0.00%, sys=16.89%, ctx=199, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=143969: Fri Aug 14 15:44:51 2026 read: IOPS=0, BW=512KiB/s (524kB/s)(2048KiB/4003msec) clat (msec): min=173, max=342, avg=257.81, stdev=119.42 lat (msec): min=173, max=342, avg=257.81, stdev=119.42 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 174], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 1882, max= 2048, per=38.41%, avg=1965.00, stdev=117.38, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2558KiB/s (2619kB/s)(10.0MiB/4003msec); 0 zone resets clat (msec): min=132, max=635, avg=339.22, stdev=173.38 lat (msec): min=132, max=635, avg=339.35, stdev=173.34 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 138], | 30.00th=[ 163], 40.00th=[ 271], 50.00th=[ 326], 60.00th=[ 359], | 70.00th=[ 368], 80.00th=[ 439], 90.00th=[ 567], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1939, max= 6035, per=44.75%, avg=3205.00, stdev=1795.92, samples=5 iops : min= 1, max= 5, avg= 2.40, stdev= 1.67, samples=5 lat (msec) : 250=33.33%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=13.39%, ctx=177, 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=143970: Fri Aug 14 15:44:51 2026 read: IOPS=1, BW=1875KiB/s (1920kB/s)(6144KiB/3277msec) clat (usec): min=955, max=335598, avg=136653.79, stdev=144552.93 lat (usec): min=957, max=335599, avg=136655.15, stdev=144552.75 clat percentiles (usec): | 1.00th=[ 955], 5.00th=[ 955], 10.00th=[ 955], 20.00th=[ 3032], | 30.00th=[ 3032], 40.00th=[ 27919], 50.00th=[ 27919], 60.00th=[206570], | 70.00th=[246416], 80.00th=[246416], 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= 3878, max= 6144, per=97.95%, avg=5011.00, stdev=1602.30, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1875KiB/s (1920kB/s)(6144KiB/3277msec); 0 zone resets clat (msec): min=86, max=914, avg=399.62, stdev=300.66 lat (msec): min=86, max=915, avg=399.98, stdev=300.81 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 313], | 70.00th=[ 584], 80.00th=[ 584], 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= 1903, max= 4096, per=33.36%, avg=2389.20, stdev=955.37, samples=5 iops : min= 1, max= 4, avg= 1.60, stdev= 1.34, samples=5 lat (usec) : 1000=8.33% lat (msec) : 4=8.33%, 50=8.33%, 100=8.33%, 250=25.00%, 500=25.00% lat (msec) : 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=13.46%, ctx=226, 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=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=143971: Fri Aug 14 15:44:51 2026 read: IOPS=1, BW=1324KiB/s (1355kB/s)(5120KiB/3868msec) clat (usec): min=522, max=304766, avg=98496.35, stdev=138176.17 lat (usec): min=524, max=304768, avg=98499.69, stdev=138177.45 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 2769], 40.00th=[ 2769], 50.00th=[ 5669], 60.00th=[ 5669], | 70.00th=[179307], 80.00th=[179307], 90.00th=[304088], 95.00th=[304088], | 99.00th=[304088], 99.50th=[304088], 99.90th=[304088], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 7968, max= 7968, per=100.00%, avg=7968.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1853KiB/s (1898kB/s)(7168KiB/3868msec); 0 zone resets clat (msec): min=105, max=1208, avg=467.49, stdev=393.86 lat (msec): min=105, max=1209, avg=467.70, stdev=394.09 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 155], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 279], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 684], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 1347, max= 4055, per=40.00%, avg=2865.00, stdev=1384.47, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 750=8.33% lat (msec) : 4=8.33%, 10=8.33%, 250=33.33%, 500=16.67%, 750=16.67% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=8.97%, ctx=104, 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=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=5116KiB/s (5239kB/s), 512KiB/s-2284KiB/s (524kB/s-2338kB/s), io=20.0MiB (20.0MB), run=3139-4003msec WRITE: bw=7163KiB/s (7335kB/s), 1631KiB/s-2558KiB/s (1670kB/s-2619kB/s), io=28.0MiB (29.4MB), run=3139-4003msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143964: Fri Aug 14 15:44:52 2026 read: IOPS=1, BW=1789KiB/s (1832kB/s)(7168KiB/4006msec) clat (msec): min=103, max=771, avg=290.26, stdev=238.56 lat (msec): min=103, max=771, avg=290.26, stdev=238.56 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 124], | 30.00th=[ 128], 40.00th=[ 128], 50.00th=[ 213], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 409], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 2035, max= 3923, per=62.20%, avg=2859.75, stdev=970.11, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1278KiB/s (1309kB/s)(5120KiB/4006msec); 0 zone resets clat (msec): min=261, max=591, avg=383.96, stdev=126.76 lat (msec): min=261, max=591, avg=384.04, stdev=126.74 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 376], 60.00th=[ 376], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 2035, max= 4087, per=42.26%, avg=2720.33, stdev=1183.57, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=4.24%, ctx=74, 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=143965: Fri Aug 14 15:44:52 2026 read: IOPS=0, BW=460KiB/s (471kB/s)(2048KiB/4454msec) clat (msec): min=241, max=489, avg=365.80, stdev=175.55 lat (msec): min=241, max=489, avg=365.80, stdev=175.55 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 489], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 2035, max= 2039, per=44.30%, avg=2037.00, stdev= 2.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2299KiB/s (2354kB/s)(10.0MiB/4454msec); 0 zone resets clat (msec): min=96, max=1197, avg=344.00, stdev=321.68 lat (msec): min=96, max=1197, avg=344.11, stdev=321.74 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 102], | 30.00th=[ 118], 40.00th=[ 239], 50.00th=[ 255], 60.00th=[ 275], | 70.00th=[ 342], 80.00th=[ 401], 90.00th=[ 418], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 1961, max= 4096, per=44.18%, avg=2843.60, stdev=1136.01, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=50.00%, 2000=8.33% cpu : usr=0.04%, sys=5.41%, ctx=85, 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=143966: Fri Aug 14 15:44:52 2026 read: IOPS=1, BW=1499KiB/s (1535kB/s)(6144KiB/4099msec) clat (msec): min=72, max=445, avg=243.00, stdev=127.51 lat (msec): min=72, max=445, avg=243.00, stdev=127.51 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 211], 50.00th=[ 211], 60.00th=[ 275], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 1961, max= 2048, per=43.99%, avg=2022.75, stdev=41.33, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 write: IOPS=1, BW=1499KiB/s (1535kB/s)(6144KiB/4099msec); 0 zone resets clat (msec): min=151, max=1071, avg=412.60, stdev=349.38 lat (msec): min=153, max=1071, avg=413.14, stdev=348.98 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 266], 50.00th=[ 266], 60.00th=[ 288], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 2031, max= 3303, per=36.57%, avg=2354.00, stdev=632.69, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=3.22%, ctx=94, 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=143968: Fri Aug 14 15:44:52 2026 read: IOPS=1, BW=1353KiB/s (1386kB/s)(5120KiB/3783msec) clat (msec): min=69, max=539, avg=227.80, stdev=183.33 lat (msec): min=69, max=539, avg=227.80, stdev=183.33 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 70], | 30.00th=[ 138], 40.00th=[ 138], 50.00th=[ 165], 60.00th=[ 165], | 70.00th=[ 226], 80.00th=[ 226], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 4087, max= 4096, per=88.98%, avg=4091.50, stdev= 6.36, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1895KiB/s (1940kB/s)(7168KiB/3783msec); 0 zone resets clat (msec): min=204, max=861, avg=362.04, stdev=232.44 lat (msec): min=204, max=861, avg=362.47, stdev=232.18 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 207], | 30.00th=[ 222], 40.00th=[ 222], 50.00th=[ 288], 60.00th=[ 376], | 70.00th=[ 376], 80.00th=[ 380], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1973, max= 4079, per=46.63%, avg=3001.50, stdev=1156.12, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=4.12%, ctx=107, 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=4598KiB/s (4708kB/s), 460KiB/s-1789KiB/s (471kB/s-1832kB/s), io=20.0MiB (20.0MB), run=3783-4454msec WRITE: bw=6437KiB/s (6592kB/s), 1278KiB/s-2299KiB/s (1309kB/s-2354kB/s), io=28.0MiB (29.4MB), run=3783-4454msec 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=143977: Fri Aug 14 15:45:05 2026 read: IOPS=0, BW=3430KiB/s (3512kB/s)(12.0MiB/3583msec) clat (msec): min=576, max=1724, avg=1150.66, stdev=573.96 lat (msec): min=576, max=1724, avg=1150.66, stdev=573.96 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 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= 7892, max= 8175, per=100.00%, avg=8033.50, stdev=200.11, 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=3.02%, ctx=46, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=143979: Fri Aug 14 15:45:05 2026 read: IOPS=0, BW=1095KiB/s (1122kB/s)(4096KiB/3739msec) clat (nsec): min=1637.4M, max=1637.4M, avg=1637443034.00, stdev= 0.00 lat (nsec): min=1637.4M, max=1637.4M, avg=1637445286.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1636], 5.00th=[ 1636], 10.00th=[ 1636], 20.00th=[ 1636], | 30.00th=[ 1636], 40.00th=[ 1636], 50.00th=[ 1636], 60.00th=[ 1636], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 7892, max= 7892, per=100.00%, avg=7892.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2191KiB/s (2244kB/s)(8192KiB/3739msec); 0 zone resets clat (msec): min=313, max=1690, avg=1001.67, stdev=973.89 lat (msec): min=313, max=1691, avg=1002.26, stdev=974.23 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 1687], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 8175, max= 8175, per=93.29%, 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=0.03%, sys=3.93%, ctx=56, 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=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=143980: Fri Aug 14 15:45:05 2026 write: IOPS=1, BW=5843KiB/s (5983kB/s)(12.0MiB/2103msec); 0 zone resets clat (msec): min=431, max=1138, avg=670.45, stdev=405.23 lat (msec): min=432, max=1138, avg=671.02, stdev=405.05 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 443], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 6420, max= 7876, per=81.57%, avg=7148.00, stdev=1029.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.10%, sys=5.95%, ctx=48, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=143981: Fri Aug 14 15:45:05 2026 write: IOPS=1, BW=4783KiB/s (4898kB/s)(12.0MiB/2569msec); 0 zone resets clat (msec): min=462, max=1042, avg=826.38, stdev=317.29 lat (msec): min=462, max=1043, avg=834.95, stdev=323.34 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 978], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 6849, max= 8143, per=85.54%, avg=7496.00, stdev=915.00, 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=0.04%, sys=3.04%, ctx=38, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4382KiB/s (4487kB/s), 1095KiB/s-3430KiB/s (1122kB/s-3512kB/s), io=16.0MiB (16.8MB), run=3583-3739msec WRITE: bw=8764KiB/s (8974kB/s), 2191KiB/s-5843KiB/s (2244kB/s-5983kB/s), io=32.0MiB (33.6MB), run=2103-3739msec rand-rw: (groupid=0, jobs=1): err= 0: pid=143982: Fri Aug 14 15:45:05 2026 read: IOPS=0, BW=4092KiB/s (4190kB/s)(12.0MiB/3003msec) clat (msec): min=794, max=1222, avg=943.94, stdev=241.25 lat (msec): min=794, max=1222, avg=943.95, stdev=241.25 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 818], | 70.00th=[ 1217], 80.00th=[ 1217], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, 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=9.96%, ctx=382, 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=143983: Fri Aug 14 15:45:05 2026 read: IOPS=0, BW=1264KiB/s (1294kB/s)(4096KiB/3241msec) clat (nsec): min=1175.7M, max=1175.7M, avg=1175688342.00, stdev= 0.00 lat (nsec): min=1175.7M, max=1175.7M, avg=1175691272.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2528KiB/s (2588kB/s)(8192KiB/3241msec); 0 zone resets clat (msec): min=807, max=1009, avg=908.57, stdev=143.16 lat (msec): min=807, max=1009, avg=908.84, stdev=143.05 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 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= 8031, max= 8031, per=88.41%, avg=8031.00, 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=0.09%, sys=3.61%, ctx=89, 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=143984: Fri Aug 14 15:45:05 2026 write: IOPS=0, BW=3407KiB/s (3488kB/s)(12.0MiB/3607msec); 0 zone resets clat (msec): min=540, max=1860, avg=1099.52, stdev=682.94 lat (msec): min=540, max=1861, avg=1099.88, stdev=682.90 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 894], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7876, max= 8031, per=87.56%, avg=7953.50, stdev=109.60, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=4.77%, ctx=57, 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=143985: Fri Aug 14 15:45:05 2026 write: IOPS=1, BW=4142KiB/s (4241kB/s)(12.0MiB/2967msec); 0 zone resets clat (msec): min=468, max=1300, avg=960.00, stdev=436.40 lat (msec): min=468, max=1301, avg=960.50, stdev=436.17 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 1116], 50.00th=[ 1116], 60.00th=[ 1116], | 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= 8078, max= 8159, per=89.37%, avg=8118.50, stdev=57.28, 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=0.00%, sys=3.41%, ctx=69, 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=5055KiB/s (5177kB/s), 1264KiB/s-4092KiB/s (1294kB/s-4190kB/s), io=16.0MiB (16.8MB), run=3003-3241msec WRITE: bw=9085KiB/s (9303kB/s), 2528KiB/s-4142KiB/s (2588kB/s-4241kB/s), io=32.0MiB (33.6MB), run=2967-3607msec