== sanity test 398b: DIO and buffer IO race ============== 01:45:53 (1786081553) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.00558 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=179610: Fri Aug 7 01:48:32 2026 read: IOPS=10, BW=43.3KiB/s (44.3kB/s)(5992KiB/138400msec) clat (usec): min=40, max=940114, avg=51150.41, stdev=38160.66 lat (usec): min=41, max=940115, avg=51152.68, stdev=38160.51 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 15139], 10.00th=[ 20317], 20.00th=[ 26870], | 30.00th=[ 32900], 40.00th=[ 38536], 50.00th=[ 44827], 60.00th=[ 51643], | 70.00th=[ 60031], 80.00th=[ 71828], 90.00th=[ 88605], 95.00th=[104334], | 99.00th=[160433], 99.50th=[175113], 99.90th=[283116], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 7, max= 103, per=25.36%, avg=42.86, stdev=16.79, samples=272 iops : min= 1, max= 25, avg=10.07, stdev= 4.22, samples=272 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(6296KiB/138400msec); 0 zone resets clat (usec): min=1053, max=357070, avg=38913.71, stdev=38819.77 lat (usec): min=1054, max=357071, avg=38916.20, stdev=38820.75 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1500], 10.00th=[ 2343], 20.00th=[ 5145], | 30.00th=[ 9372], 40.00th=[ 19006], 50.00th=[ 28181], 60.00th=[ 38536], | 70.00th=[ 50070], 80.00th=[ 67634], 90.00th=[ 92799], 95.00th=[115868], | 99.00th=[164627], 99.50th=[179307], 99.90th=[217056], 99.95th=[358613], | 99.99th=[358613] bw ( KiB/s): min= 7, max= 101, per=25.42%, avg=45.00, stdev=19.19, samples=272 iops : min= 1, max= 25, avg=10.60, stdev= 4.84, samples=272 lat (usec) : 50=0.16%, 100=0.88%, 250=0.42%, 750=0.10%, 1000=0.07% lat (msec) : 2=4.46%, 4=4.07%, 10=7.49%, 20=7.98%, 50=38.31% lat (msec) : 100=29.49%, 250=6.48%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=4.91%, ctx=6878, 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=179611: Fri Aug 7 01:48:32 2026 read: IOPS=10, BW=42.6KiB/s (43.6kB/s)(5940KiB/139494msec) clat (usec): min=36, max=275440, avg=51900.30, stdev=33453.93 lat (usec): min=37, max=275441, avg=51904.15, stdev=33453.34 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 14353], 10.00th=[ 19792], 20.00th=[ 27657], | 30.00th=[ 32900], 40.00th=[ 38536], 50.00th=[ 45351], 60.00th=[ 52691], | 70.00th=[ 61604], 80.00th=[ 71828], 90.00th=[ 89654], 95.00th=[108528], | 99.00th=[175113], 99.50th=[200279], 99.90th=[258999], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 7, max= 93, per=25.06%, avg=42.36, stdev=17.25, samples=273 iops : min= 1, max= 23, avg= 9.94, stdev= 4.35, samples=273 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(6348KiB/139494msec); 0 zone resets clat (usec): min=1156, max=896717, avg=38936.25, stdev=45039.29 lat (usec): min=1157, max=896718, avg=38941.48, stdev=45042.00 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1500], 10.00th=[ 2376], 20.00th=[ 4752], | 30.00th=[ 8586], 40.00th=[ 17957], 50.00th=[ 27395], 60.00th=[ 37487], | 70.00th=[ 49546], 80.00th=[ 65799], 90.00th=[ 90702], 95.00th=[115868], | 99.00th=[185598], 99.50th=[208667], 99.90th=[270533], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 7, max= 167, per=25.44%, avg=45.03, stdev=21.16, samples=274 iops : min= 1, max= 41, avg=10.61, stdev= 5.32, samples=274 lat (usec) : 50=0.10%, 100=1.17%, 250=0.13%, 750=0.03%, 1000=0.07% lat (msec) : 2=4.26%, 4=4.59%, 10=7.91%, 20=8.20%, 50=37.43% lat (msec) : 100=28.91%, 250=7.00%, 500=0.16%, 1000=0.03% cpu : usr=0.08%, sys=4.78%, ctx=6937, 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=179612: Fri Aug 7 01:48:32 2026 read: IOPS=10, BW=42.5KiB/s (43.5kB/s)(6028KiB/141844msec) clat (usec): min=28, max=936755, avg=51653.84, stdev=39809.47 lat (usec): min=29, max=936756, avg=51655.99, stdev=39809.63 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 12387], 10.00th=[ 19006], 20.00th=[ 26346], | 30.00th=[ 32113], 40.00th=[ 38536], 50.00th=[ 45351], 60.00th=[ 53216], | 70.00th=[ 61604], 80.00th=[ 70779], 90.00th=[ 89654], 95.00th=[109577], | 99.00th=[170918], 99.50th=[200279], 99.90th=[248513], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 7, max= 96, per=24.89%, avg=42.07, stdev=16.74, samples=279 iops : min= 1, max= 24, avg= 9.87, stdev= 4.24, samples=279 write: IOPS=11, BW=44.1KiB/s (45.2kB/s)(6260KiB/141844msec); 0 zone resets clat (usec): min=1134, max=263514, avg=40545.40, stdev=39542.97 lat (usec): min=1135, max=263516, avg=40551.08, stdev=39545.47 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1647], 10.00th=[ 2704], 20.00th=[ 5407], | 30.00th=[ 11207], 40.00th=[ 21890], 50.00th=[ 30540], 60.00th=[ 39584], | 70.00th=[ 51643], 80.00th=[ 69731], 90.00th=[ 93848], 95.00th=[116917], | 99.00th=[183501], 99.50th=[206570], 99.90th=[258999], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 7, max= 111, per=24.74%, avg=43.79, stdev=19.55, samples=278 iops : min= 1, max= 27, avg=10.31, stdev= 4.91, samples=278 lat (usec) : 50=0.29%, 100=1.46%, 250=0.20%, 500=0.03% lat (msec) : 2=3.61%, 4=3.94%, 10=7.10%, 20=7.85%, 50=38.25% lat (msec) : 100=29.72%, 250=7.45%, 500=0.07%, 1000=0.03% cpu : usr=0.06%, sys=4.82%, ctx=7059, 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=179613: Fri Aug 7 01:48:32 2026 read: IOPS=10, BW=43.0KiB/s (44.1kB/s)(6052KiB/140595msec) clat (usec): min=46, max=299238, avg=51484.31, stdev=33111.38 lat (usec): min=47, max=299239, avg=51486.31, stdev=33111.03 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 14222], 10.00th=[ 20055], 20.00th=[ 26870], | 30.00th=[ 32375], 40.00th=[ 38536], 50.00th=[ 44303], 60.00th=[ 51643], | 70.00th=[ 61080], 80.00th=[ 71828], 90.00th=[ 88605], 95.00th=[111674], | 99.00th=[170918], 99.50th=[200279], 99.90th=[295699], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 7, max= 111, per=25.25%, avg=42.68, stdev=17.07, samples=275 iops : min= 1, max= 27, avg=10.02, stdev= 4.31, samples=275 write: IOPS=11, BW=44.4KiB/s (45.4kB/s)(6236KiB/140595msec); 0 zone resets clat (usec): min=1017, max=890122, avg=39863.95, stdev=44093.73 lat (usec): min=1018, max=890123, avg=39872.06, stdev=44093.70 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1532], 10.00th=[ 2638], 20.00th=[ 5604], | 30.00th=[ 10552], 40.00th=[ 20579], 50.00th=[ 28967], 60.00th=[ 38536], | 70.00th=[ 50070], 80.00th=[ 66323], 90.00th=[ 91751], 95.00th=[115868], | 99.00th=[177210], 99.50th=[185598], 99.90th=[254804], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 7, max= 117, per=24.85%, avg=43.99, stdev=18.99, samples=275 iops : min= 1, max= 29, avg=10.35, stdev= 4.80, samples=275 lat (usec) : 50=0.13%, 100=1.40%, 250=0.23%, 750=0.07% lat (msec) : 2=3.61%, 4=4.17%, 10=7.16%, 20=8.17%, 50=38.83% lat (msec) : 100=28.71%, 250=7.39%, 500=0.10%, 1000=0.03% cpu : usr=0.06%, sys=4.91%, ctx=6918, 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=169KiB/s (173kB/s), 42.5KiB/s-43.3KiB/s (43.5kB/s-44.3kB/s), io=23.4MiB (24.6MB), run=138400-141844msec WRITE: bw=177KiB/s (181kB/s), 44.1KiB/s-45.5KiB/s (45.2kB/s-46.6kB/s), io=24.6MiB (25.7MB), run=138400-141844msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179615: Fri Aug 7 01:49:16 2026 read: IOPS=8, BW=32.4KiB/s (33.2kB/s)(5992KiB/185070msec) clat (msec): min=7, max=939, avg=47.41, stdev=46.16 lat (msec): min=7, max=939, avg=47.41, stdev=46.16 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 67], 90.00th=[ 103], 95.00th=[ 138], | 99.00th=[ 205], 99.50th=[ 222], 99.90th=[ 334], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 131, per=25.43%, avg=32.80, stdev=22.43, samples=354 iops : min= 1, max= 32, avg= 7.52, stdev= 5.66, samples=354 write: IOPS=8, BW=34.0KiB/s (34.8kB/s)(6296KiB/185070msec); 0 zone resets clat (msec): min=10, max=351, avg=72.35, stdev=50.27 lat (msec): min=10, max=351, avg=72.35, stdev=50.27 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 84], 80.00th=[ 106], 90.00th=[ 138], 95.00th=[ 174], | 99.00th=[ 255], 99.50th=[ 284], 99.90th=[ 347], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 7, max= 96, per=25.25%, avg=34.08, stdev=20.03, samples=358 iops : min= 1, max= 24, avg= 7.84, stdev= 5.06, samples=358 lat (msec) : 10=0.81%, 20=11.23%, 50=44.89%, 100=26.33%, 250=16.11% lat (msec) : 500=0.59%, 1000=0.03% cpu : usr=0.04%, sys=2.07%, ctx=4992, 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=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=179617: Fri Aug 7 01:49:16 2026 read: IOPS=8, BW=32.1KiB/s (32.9kB/s)(5940KiB/185069msec) clat (msec): min=6, max=808, avg=47.67, stdev=45.54 lat (msec): min=6, max=808, avg=47.67, stdev=45.54 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 71], 90.00th=[ 97], 95.00th=[ 136], | 99.00th=[ 197], 99.50th=[ 228], 99.90th=[ 414], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 120, per=25.88%, avg=33.39, stdev=21.95, samples=345 iops : min= 1, max= 30, avg= 7.67, stdev= 5.54, samples=345 write: IOPS=8, BW=34.3KiB/s (35.1kB/s)(6348KiB/185069msec); 0 zone resets clat (msec): min=12, max=354, avg=71.90, stdev=49.37 lat (msec): min=12, max=354, avg=71.90, stdev=49.37 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 67], | 70.00th=[ 83], 80.00th=[ 106], 90.00th=[ 140], 95.00th=[ 167], | 99.00th=[ 249], 99.50th=[ 288], 99.90th=[ 347], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 7, max= 103, per=25.32%, avg=34.18, stdev=20.15, samples=360 iops : min= 1, max= 25, avg= 7.87, stdev= 5.09, samples=360 lat (msec) : 10=0.68%, 20=11.00%, 50=44.56%, 100=27.57%, 250=15.53% lat (msec) : 500=0.62%, 1000=0.03% cpu : usr=0.05%, sys=1.92%, ctx=4782, 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=179618: Fri Aug 7 01:49:16 2026 read: IOPS=8, BW=32.5KiB/s (33.3kB/s)(6028KiB/185190msec) clat (msec): min=5, max=417, avg=49.43, stdev=43.60 lat (msec): min=5, max=417, avg=49.43, stdev=43.60 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 52], 80.00th=[ 74], 90.00th=[ 109], 95.00th=[ 144], | 99.00th=[ 207], 99.50th=[ 230], 99.90th=[ 334], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7, max= 112, per=25.57%, avg=32.99, stdev=21.28, samples=355 iops : min= 1, max= 28, avg= 7.58, stdev= 5.37, samples=355 write: IOPS=8, BW=33.8KiB/s (34.6kB/s)(6260KiB/185190msec); 0 zone resets clat (msec): min=13, max=824, avg=70.64, stdev=52.11 lat (msec): min=13, max=824, avg=70.64, stdev=52.11 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 34], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 64], | 70.00th=[ 79], 80.00th=[ 104], 90.00th=[ 140], 95.00th=[ 169], | 99.00th=[ 239], 99.50th=[ 284], 99.90th=[ 351], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 112, per=24.87%, avg=33.58, stdev=21.36, samples=362 iops : min= 1, max= 28, avg= 7.72, stdev= 5.38, samples=362 lat (msec) : 10=1.11%, 20=10.38%, 50=45.54%, 100=26.14%, 250=16.31% lat (msec) : 500=0.49%, 1000=0.03% cpu : usr=0.06%, sys=2.02%, ctx=5005, 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=179619: Fri Aug 7 01:49:16 2026 read: IOPS=8, BW=32.6KiB/s (33.4kB/s)(6052KiB/185482msec) clat (msec): min=6, max=299, avg=48.48, stdev=42.24 lat (msec): min=6, max=299, avg=48.48, stdev=42.24 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 53], 80.00th=[ 71], 90.00th=[ 109], 95.00th=[ 142], | 99.00th=[ 211], 99.50th=[ 232], 99.90th=[ 275], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 7, max= 152, per=25.84%, avg=33.34, stdev=22.20, samples=351 iops : min= 1, max= 38, avg= 7.67, stdev= 5.60, samples=351 write: IOPS=8, BW=33.6KiB/s (34.4kB/s)(6236KiB/185482msec); 0 zone resets clat (msec): min=12, max=824, avg=71.83, stdev=52.19 lat (msec): min=12, max=824, avg=71.84, stdev=52.19 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 70], | 70.00th=[ 84], 80.00th=[ 104], 90.00th=[ 136], 95.00th=[ 167], | 99.00th=[ 243], 99.50th=[ 284], 99.90th=[ 355], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 102, per=24.85%, avg=33.55, stdev=20.37, samples=359 iops : min= 1, max= 25, avg= 7.72, stdev= 5.14, samples=359 lat (msec) : 10=0.88%, 20=11.49%, 50=44.17%, 100=26.92%, 250=16.05% lat (msec) : 500=0.46%, 1000=0.03% cpu : usr=0.06%, sys=1.96%, ctx=4822, 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=129KiB/s (133kB/s), 32.1KiB/s-32.6KiB/s (32.9kB/s-33.4kB/s), io=23.4MiB (24.6MB), run=185069-185482msec WRITE: bw=136KiB/s (139kB/s), 33.6KiB/s-34.3KiB/s (34.4kB/s-35.1kB/s), io=24.6MiB (25.7MB), run=185069-185482msec 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=179660: Fri Aug 7 01:50:06 2026 read: IOPS=9, BW=149KiB/s (153kB/s)(5920KiB/39670msec) clat (usec): min=42, max=239683, avg=57890.52, stdev=40282.22 lat (usec): min=42, max=239684, avg=57891.64, stdev=40282.28 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 65], 10.00th=[ 502], 20.00th=[ 25560], | 30.00th=[ 34866], 40.00th=[ 43254], 50.00th=[ 52167], 60.00th=[ 63701], | 70.00th=[ 72877], 80.00th=[ 85459], 90.00th=[107480], 95.00th=[130548], | 99.00th=[185598], 99.50th=[225444], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 287, per=25.04%, avg=150.97, stdev=61.27, samples=77 iops : min= 1, max= 17, avg= 8.66, stdev= 3.86, samples=77 write: IOPS=10, BW=161KiB/s (164kB/s)(6368KiB/39670msec); 0 zone resets clat (usec): min=1638, max=229875, avg=45517.47, stdev=44328.63 lat (usec): min=1640, max=229877, avg=45519.90, stdev=44328.52 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2343], 10.00th=[ 3982], 20.00th=[ 7504], | 30.00th=[ 13042], 40.00th=[ 21627], 50.00th=[ 33424], 60.00th=[ 43254], | 70.00th=[ 56886], 80.00th=[ 73925], 90.00th=[111674], 95.00th=[139461], | 99.00th=[202376], 99.50th=[214959], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 31, max= 350, per=25.31%, avg=160.72, stdev=65.16, samples=78 iops : min= 1, max= 21, avg= 9.28, stdev= 4.12, samples=78 lat (usec) : 50=0.52%, 100=4.04%, 500=0.13%, 750=0.13% lat (msec) : 2=1.69%, 4=3.65%, 10=8.20%, 20=7.68%, 50=30.21% lat (msec) : 100=31.38%, 250=12.37% cpu : usr=0.08%, sys=5.23%, ctx=1837, 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=179661: Fri Aug 7 01:50:06 2026 read: IOPS=9, BW=150KiB/s (154kB/s)(5744KiB/38262msec) clat (usec): min=52, max=232941, avg=54918.59, stdev=37032.95 lat (usec): min=52, max=232942, avg=54932.14, stdev=37036.63 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 71], 10.00th=[ 594], 20.00th=[ 28181], | 30.00th=[ 36439], 40.00th=[ 42206], 50.00th=[ 48497], 60.00th=[ 56886], | 70.00th=[ 67634], 80.00th=[ 79168], 90.00th=[ 96994], 95.00th=[127402], | 99.00th=[175113], 99.50th=[204473], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 31, max= 286, per=25.11%, avg=151.41, stdev=61.55, samples=74 iops : min= 1, max= 17, avg= 8.69, stdev= 3.90, samples=74 write: IOPS=10, BW=171KiB/s (175kB/s)(6544KiB/38262msec); 0 zone resets clat (usec): min=1702, max=195530, avg=44827.32, stdev=41170.58 lat (usec): min=1706, max=195532, avg=44832.11, stdev=41169.45 clat percentiles (usec): | 1.00th=[ 1975], 5.00th=[ 3261], 10.00th=[ 4359], 20.00th=[ 7701], | 30.00th=[ 13173], 40.00th=[ 23987], 50.00th=[ 34866], 60.00th=[ 45351], | 70.00th=[ 58983], 80.00th=[ 73925], 90.00th=[103285], 95.00th=[129500], | 99.00th=[177210], 99.50th=[191890], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 31, max= 349, per=26.98%, avg=171.29, stdev=66.25, samples=75 iops : min= 1, max= 21, avg= 9.95, stdev= 4.18, samples=75 lat (usec) : 100=3.65%, 250=0.91%, 750=0.13% lat (msec) : 2=0.78%, 4=4.04%, 10=8.20%, 20=7.68%, 50=33.85% lat (msec) : 100=30.73%, 250=10.03% cpu : usr=0.06%, sys=5.19%, ctx=1793, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179662: Fri Aug 7 01:50:06 2026 read: IOPS=10, BW=160KiB/s (164kB/s)(6256KiB/38997msec) clat (usec): min=35, max=189291, avg=52711.42, stdev=33049.01 lat (usec): min=36, max=189293, avg=52712.66, stdev=33049.02 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 66], 10.00th=[ 486], 20.00th=[ 26346], | 30.00th=[ 35390], 40.00th=[ 42730], 50.00th=[ 49546], 60.00th=[ 58983], | 70.00th=[ 68682], 80.00th=[ 78119], 90.00th=[ 98042], 95.00th=[109577], | 99.00th=[143655], 99.50th=[189793], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 31, max= 349, per=26.72%, avg=161.13, stdev=63.47, samples=76 iops : min= 1, max= 21, avg= 9.29, stdev= 4.05, samples=76 write: IOPS=9, BW=155KiB/s (158kB/s)(6032KiB/38997msec); 0 zone resets clat (usec): min=1713, max=237447, avg=48408.16, stdev=48594.03 lat (usec): min=1714, max=237449, avg=48410.54, stdev=48594.09 clat percentiles (usec): | 1.00th=[ 1991], 5.00th=[ 2671], 10.00th=[ 4424], 20.00th=[ 8160], | 30.00th=[ 12780], 40.00th=[ 21365], 50.00th=[ 32113], 60.00th=[ 44827], | 70.00th=[ 61604], 80.00th=[ 84411], 90.00th=[112722], 95.00th=[154141], | 99.00th=[221250], 99.50th=[231736], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 31, max= 349, per=24.47%, avg=155.36, stdev=63.06, samples=75 iops : min= 1, max= 21, avg= 8.92, stdev= 4.02, samples=75 lat (usec) : 50=0.13%, 100=4.30%, 250=0.65%, 500=0.13%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=0.65%, 4=3.91%, 10=7.94%, 20=7.03%, 50=31.77% lat (msec) : 100=32.81%, 250=10.29% cpu : usr=0.06%, sys=4.78%, ctx=1807, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179664: Fri Aug 7 01:50:06 2026 read: IOPS=9, BW=155KiB/s (159kB/s)(6032KiB/38927msec) clat (usec): min=44, max=315056, avg=55332.15, stdev=41007.27 lat (usec): min=45, max=315057, avg=55333.30, stdev=41007.32 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 64], 10.00th=[ 114], 20.00th=[ 27395], | 30.00th=[ 33424], 40.00th=[ 40633], 50.00th=[ 50594], 60.00th=[ 59507], | 70.00th=[ 67634], 80.00th=[ 83362], 90.00th=[101188], 95.00th=[123208], | 99.00th=[196084], 99.50th=[233833], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 31, max= 352, per=25.83%, avg=155.77, stdev=74.10, samples=75 iops : min= 1, max= 22, avg= 8.96, stdev= 4.68, samples=75 write: IOPS=10, BW=161KiB/s (165kB/s)(6256KiB/38927msec); 0 zone resets clat (usec): min=1821, max=270563, avg=44937.70, stdev=45726.29 lat (usec): min=1823, max=270564, avg=44970.48, stdev=45744.05 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 3097], 10.00th=[ 4424], 20.00th=[ 8291], | 30.00th=[ 12780], 40.00th=[ 18482], 50.00th=[ 30802], 60.00th=[ 43254], | 70.00th=[ 54789], 80.00th=[ 73925], 90.00th=[114820], 95.00th=[143655], | 99.00th=[185598], 99.50th=[206570], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 317, per=25.34%, avg=160.91, stdev=73.80, samples=76 iops : min= 1, max= 19, avg= 9.29, stdev= 4.66, samples=76 lat (usec) : 50=0.39%, 100=4.43%, 250=0.78%, 1000=0.13% lat (msec) : 2=0.91%, 4=2.99%, 10=8.85%, 20=9.90%, 50=30.08% lat (msec) : 100=29.56%, 250=11.72%, 500=0.26% cpu : usr=0.05%, sys=4.95%, ctx=1742, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=604KiB/s (618kB/s), 149KiB/s-160KiB/s (153kB/s-164kB/s), io=23.4MiB (24.5MB), run=38262-39670msec WRITE: bw=635KiB/s (650kB/s), 155KiB/s-171KiB/s (158kB/s-175kB/s), io=24.6MiB (25.8MB), run=38262-39670msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179663: Fri Aug 7 01:50:24 2026 read: IOPS=6, BW=103KiB/s (106kB/s)(5920KiB/57207msec) clat (msec): min=8, max=350, avg=60.35, stdev=46.61 lat (msec): min=8, max=350, avg=60.35, stdev=46.61 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 17], 10.00th=[ 22], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 42], 50.00th=[ 48], 60.00th=[ 55], | 70.00th=[ 67], 80.00th=[ 80], 90.00th=[ 109], 95.00th=[ 167], | 99.00th=[ 245], 99.50th=[ 259], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 255, per=25.46%, avg=106.17, stdev=55.05, samples=107 iops : min= 1, max= 15, avg= 5.78, stdev= 3.48, samples=107 write: IOPS=6, BW=111KiB/s (114kB/s)(6368KiB/57207msec); 0 zone resets clat (msec): min=15, max=330, avg=86.44, stdev=51.57 lat (msec): min=15, max=330, avg=86.46, stdev=51.57 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 28], 10.00th=[ 37], 20.00th=[ 45], | 30.00th=[ 55], 40.00th=[ 63], 50.00th=[ 72], 60.00th=[ 84], | 70.00th=[ 102], 80.00th=[ 124], 90.00th=[ 159], 95.00th=[ 190], | 99.00th=[ 268], 99.50th=[ 317], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 254, per=25.52%, avg=112.05, stdev=50.42, samples=110 iops : min= 1, max= 15, avg= 6.15, stdev= 3.17, samples=110 lat (msec) : 10=0.26%, 20=4.17%, 50=34.90%, 100=39.32%, 250=20.31% lat (msec) : 500=1.04% cpu : usr=0.04%, sys=1.88%, ctx=1277, 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=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=179665: Fri Aug 7 01:50:24 2026 read: IOPS=6, BW=102KiB/s (104kB/s)(5744KiB/56352msec) clat (msec): min=8, max=285, avg=58.35, stdev=43.63 lat (msec): min=8, max=285, avg=58.35, stdev=43.63 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 40], 50.00th=[ 45], 60.00th=[ 52], | 70.00th=[ 65], 80.00th=[ 78], 90.00th=[ 108], 95.00th=[ 153], | 99.00th=[ 226], 99.50th=[ 262], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 23, max= 287, per=25.34%, avg=105.67, stdev=61.87, samples=107 iops : min= 1, max= 17, avg= 5.75, stdev= 3.89, samples=107 write: IOPS=7, BW=116KiB/s (119kB/s)(6544KiB/56352msec); 0 zone resets clat (msec): min=13, max=335, avg=85.78, stdev=52.87 lat (msec): min=13, max=335, avg=85.79, stdev=52.87 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 31], 10.00th=[ 36], 20.00th=[ 44], | 30.00th=[ 54], 40.00th=[ 63], 50.00th=[ 72], 60.00th=[ 84], | 70.00th=[ 97], 80.00th=[ 118], 90.00th=[ 153], 95.00th=[ 192], | 99.00th=[ 284], 99.50th=[ 305], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 31, max= 255, per=26.59%, avg=116.75, stdev=56.83, samples=110 iops : min= 1, max= 15, avg= 6.45, stdev= 3.58, samples=110 lat (msec) : 10=0.13%, 20=3.91%, 50=36.59%, 100=38.54%, 250=19.79% lat (msec) : 500=1.04% cpu : usr=0.05%, sys=1.98%, ctx=1371, 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=179666: Fri Aug 7 01:50:24 2026 read: IOPS=6, BW=110KiB/s (113kB/s)(6256KiB/56938msec) clat (msec): min=10, max=265, avg=61.34, stdev=46.34 lat (msec): min=10, max=265, avg=61.34, stdev=46.34 clat percentiles (msec): | 1.00th=[ 12], 5.00th=[ 18], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 54], | 70.00th=[ 67], 80.00th=[ 88], 90.00th=[ 121], 95.00th=[ 167], | 99.00th=[ 239], 99.50th=[ 259], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 30, max= 286, per=27.09%, avg=112.98, stdev=67.65, samples=109 iops : min= 1, max= 17, avg= 6.20, stdev= 4.25, samples=109 write: IOPS=6, BW=106KiB/s (108kB/s)(6032KiB/56938msec); 0 zone resets clat (msec): min=20, max=344, avg=86.46, stdev=54.80 lat (msec): min=20, max=344, avg=86.47, stdev=54.80 clat percentiles (msec): | 1.00th=[ 23], 5.00th=[ 30], 10.00th=[ 34], 20.00th=[ 44], | 30.00th=[ 54], 40.00th=[ 61], 50.00th=[ 70], 60.00th=[ 83], | 70.00th=[ 100], 80.00th=[ 125], 90.00th=[ 161], 95.00th=[ 194], | 99.00th=[ 309], 99.50th=[ 326], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 30, max= 286, per=24.06%, avg=105.61, stdev=52.93, samples=111 iops : min= 1, max= 17, avg= 5.75, stdev= 3.35, samples=111 lat (msec) : 20=4.04%, 50=37.37%, 100=36.07%, 250=21.22%, 500=1.30% cpu : usr=0.04%, sys=1.85%, ctx=1313, 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=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=179667: Fri Aug 7 01:50:24 2026 read: IOPS=6, BW=105KiB/s (108kB/s)(6032KiB/57338msec) clat (msec): min=10, max=278, avg=61.61, stdev=45.84 lat (msec): min=10, max=278, avg=61.61, stdev=45.84 clat percentiles (msec): | 1.00th=[ 13], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 30], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 66], 80.00th=[ 85], 90.00th=[ 125], 95.00th=[ 159], | 99.00th=[ 251], 99.50th=[ 257], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 252, per=26.65%, avg=111.14, stdev=56.29, samples=104 iops : min= 1, max= 15, avg= 6.09, stdev= 3.53, samples=104 write: IOPS=6, BW=109KiB/s (112kB/s)(6256KiB/57338msec); 0 zone resets clat (msec): min=18, max=323, avg=86.76, stdev=53.15 lat (msec): min=18, max=323, avg=86.77, stdev=53.16 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 29], 10.00th=[ 36], 20.00th=[ 45], | 30.00th=[ 55], 40.00th=[ 64], 50.00th=[ 72], 60.00th=[ 83], | 70.00th=[ 101], 80.00th=[ 123], 90.00th=[ 155], 95.00th=[ 199], | 99.00th=[ 275], 99.50th=[ 313], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 30, max= 287, per=24.44%, avg=107.28, stdev=52.48, samples=112 iops : min= 1, max= 17, avg= 5.85, stdev= 3.28, samples=112 lat (msec) : 20=2.47%, 50=36.07%, 100=39.06%, 250=21.09%, 500=1.30% cpu : usr=0.05%, sys=1.82%, ctx=1286, 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=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=418KiB/s (428kB/s), 102KiB/s-110KiB/s (104kB/s-113kB/s), io=23.4MiB (24.5MB), run=56352-57338msec WRITE: bw=439KiB/s (450kB/s), 106KiB/s-116KiB/s (108kB/s-119kB/s), io=24.6MiB (25.8MB), run=56352-57338msec 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=179686: Fri Aug 7 01:50:45 2026 read: IOPS=0, BW=896KiB/s (917kB/s)(7168KiB/8002msec) clat (usec): min=1196, max=3066.5k, avg=967330.16, stdev=1428637.22 lat (usec): min=1197, max=3066.5k, avg=967331.47, stdev=1428637.51 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1205], 10.00th=[ 1205], | 20.00th=[ 2573], 30.00th=[ 149947], 40.00th=[ 149947], | 50.00th=[ 233833], 60.00th=[ 278922], 70.00th=[ 278922], | 80.00th=[3036677], 90.00th=[3070231], 95.00th=[3070231], | 99.00th=[3070231], 99.50th=[3070231], 99.90th=[3070231], | 99.95th=[3070231], 99.99th=[3070231] bw ( KiB/s): min= 2031, max= 4096, per=100.00%, avg=3407.67, stdev=1192.23, samples=3 iops : min= 1, max= 4, avg= 3.00, stdev= 1.73, samples=3 write: IOPS=0, BW=640KiB/s (655kB/s)(5120KiB/8002msec); 0 zone resets clat (msec): min=131, max=310, avg=210.32, stdev=68.69 lat (msec): min=131, max=310, avg=210.63, stdev=68.94 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 132], | 30.00th=[ 163], 40.00th=[ 163], 50.00th=[ 222], 60.00th=[ 222], | 70.00th=[ 226], 80.00th=[ 226], 90.00th=[ 309], 95.00th=[ 309], | 99.00th=[ 309], 99.50th=[ 309], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 2048, max= 3984, per=100.00%, avg=3016.00, stdev=1368.96, samples=2 iops : min= 2, max= 3, avg= 2.50, stdev= 0.71, samples=2 lat (msec) : 2=8.33%, 4=8.33%, 250=50.00%, 500=16.67%, >=2000=16.67% cpu : usr=0.00%, sys=6.69%, ctx=979, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179687: Fri Aug 7 01:50:45 2026 read: IOPS=0, BW=188KiB/s (193kB/s)(2048KiB/10866msec) clat (usec): min=460, max=161973, avg=81216.85, stdev=114206.74 lat (usec): min=461, max=161975, avg=81218.81, stdev=114207.59 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 461], 10.00th=[ 461], 20.00th=[ 461], | 30.00th=[ 461], 40.00th=[ 461], 50.00th=[ 461], 60.00th=[162530], | 70.00th=[162530], 80.00th=[162530], 90.00th=[162530], 95.00th=[162530], | 99.00th=[162530], 99.50th=[162530], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 1436, max= 2003, per=91.27%, avg=1719.50, stdev=400.93, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=0, BW=942KiB/s (965kB/s)(10.0MiB/10866msec); 0 zone resets clat (msec): min=137, max=4000, avg=1058.93, stdev=1447.15 lat (msec): min=138, max=4000, avg=1059.12, stdev=1447.09 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 155], | 30.00th=[ 163], 40.00th=[ 222], 50.00th=[ 228], 60.00th=[ 435], | 70.00th=[ 443], 80.00th=[ 1418], 90.00th=[ 3406], 95.00th=[ 4010], | 99.00th=[ 4010], 99.50th=[ 4010], 99.90th=[ 4010], 99.95th=[ 4010], | 99.99th=[ 4010] bw ( KiB/s): min= 2003, max= 6059, per=100.00%, avg=3039.00, stdev=1690.61, samples=6 iops : min= 1, max= 5, avg= 2.00, stdev= 1.67, samples=6 lat (usec) : 500=8.33% lat (msec) : 250=50.00%, 500=16.67%, 2000=8.33%, >=2000=16.67% cpu : usr=0.00%, sys=5.10%, ctx=99, 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=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=179688: Fri Aug 7 01:50:45 2026 read: IOPS=0, BW=593KiB/s (607kB/s)(6144KiB/10366msec) clat (msec): min=217, max=375, avg=278.99, stdev=57.23 lat (msec): min=217, max=375, avg=278.99, stdev=57.23 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 264], 50.00th=[ 264], 60.00th=[ 288], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 1961, max= 2035, per=100.00%, avg=2003.60, stdev=29.51, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=0, BW=593KiB/s (607kB/s)(6144KiB/10366msec); 0 zone resets clat (msec): min=235, max=6430, avg=1397.05, stdev=2471.81 lat (msec): min=235, max=6431, avg=1397.46, stdev=2471.70 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 472], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 6409], 95.00th=[ 6409], | 99.00th=[ 6409], 99.50th=[ 6409], 99.90th=[ 6409], 99.95th=[ 6409], | 99.99th=[ 6409] bw ( KiB/s): min= 1961, max= 4079, per=91.75%, avg=2420.40, stdev=927.71, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=33.33%, 500=50.00%, 750=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=5.24%, ctx=215, 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=179689: Fri Aug 7 01:50:45 2026 read: IOPS=0, BW=555KiB/s (568kB/s)(5120KiB/9233msec) clat (usec): min=508, max=260143, avg=109637.71, stdev=120247.18 lat (usec): min=510, max=260144, avg=109638.82, stdev=120246.97 clat percentiles (usec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 6325], 40.00th=[ 6325], 50.00th=[ 67634], 60.00th=[ 67634], | 70.00th=[212861], 80.00th=[212861], 90.00th=[261096], 95.00th=[261096], | 99.00th=[261096], 99.50th=[261096], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=0, BW=776KiB/s (795kB/s)(7168KiB/9233msec); 0 zone resets clat (msec): min=276, max=6016, avg=1214.61, stdev=2122.93 lat (msec): min=276, max=6016, avg=1214.91, stdev=2122.85 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 275], 10.00th=[ 275], 20.00th=[ 317], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 363], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 726], 90.00th=[ 6007], 95.00th=[ 6007], | 99.00th=[ 6007], 99.50th=[ 6007], 99.90th=[ 6007], 99.95th=[ 6007], | 99.99th=[ 6007] bw ( KiB/s): min= 1580, max= 3984, per=90.72%, avg=2393.25, stdev=1079.80, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 100=8.33%, 250=8.33%, 500=50.00%, 750=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=5.18%, ctx=141, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1885KiB/s (1930kB/s), 188KiB/s-896KiB/s (193kB/s-917kB/s), io=20.0MiB (20.0MB), run=8002-10866msec WRITE: bw=2639KiB/s (2702kB/s), 593KiB/s-942KiB/s (607kB/s-965kB/s), io=28.0MiB (29.4MB), run=8002-10866msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179682: Fri Aug 7 01:50:45 2026 read: IOPS=0, BW=635KiB/s (650kB/s)(7168KiB/11297msec) clat (msec): min=60, max=4350, avg=1352.10, stdev=1720.18 lat (msec): min=60, max=4350, avg=1352.10, stdev=1720.19 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 108], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 239], 60.00th=[ 1452], | 70.00th=[ 1452], 80.00th=[ 3071], 90.00th=[ 4329], 95.00th=[ 4329], | 99.00th=[ 4329], 99.50th=[ 4329], 99.90th=[ 4329], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 1980, max= 4063, per=100.00%, avg=3032.25, stdev=1181.23, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=453KiB/s (464kB/s)(5120KiB/11297msec); 0 zone resets clat (msec): min=146, max=532, avg=299.80, stdev=146.49 lat (msec): min=146, max=532, avg=299.87, stdev=146.50 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 146], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 253], 60.00th=[ 253], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 2048, max= 4063, per=100.00%, avg=3357.33, stdev=1135.06, samples=3 iops : min= 2, max= 3, avg= 2.67, stdev= 0.58, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=8.33%, 2000=8.33% lat (msec) : >=2000=16.67% cpu : usr=0.00%, sys=1.78%, ctx=77, 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=179683: Fri Aug 7 01:50:45 2026 read: IOPS=0, BW=191KiB/s (195kB/s)(2048KiB/10728msec) clat (msec): min=83, max=150, avg=117.24, stdev=47.61 lat (msec): min=83, max=150, avg=117.24, stdev=47.61 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 84], | 30.00th=[ 84], 40.00th=[ 84], 50.00th=[ 84], 60.00th=[ 150], | 70.00th=[ 150], 80.00th=[ 150], 90.00th=[ 150], 95.00th=[ 150], | 99.00th=[ 150], 99.50th=[ 150], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 1535, max= 2031, per=98.40%, avg=1783.00, stdev=350.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=0, BW=955KiB/s (977kB/s)(10.0MiB/10728msec); 0 zone resets clat (msec): min=120, max=3925, avg=1042.44, stdev=1392.30 lat (msec): min=121, max=3925, avg=1042.79, stdev=1392.27 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 130], | 30.00th=[ 205], 40.00th=[ 326], 50.00th=[ 372], 60.00th=[ 405], | 70.00th=[ 506], 80.00th=[ 1150], 90.00th=[ 3306], 95.00th=[ 3943], | 99.00th=[ 3943], 99.50th=[ 3943], 99.90th=[ 3943], 99.95th=[ 3943], | 99.99th=[ 3943] bw ( KiB/s): min= 1973, max= 4079, per=100.00%, avg=2697.33, stdev=1061.17, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=8.33%, 2000=8.33% lat (msec) : >=2000=16.67% cpu : usr=0.02%, sys=2.48%, ctx=118, 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=179684: Fri Aug 7 01:50:45 2026 read: IOPS=0, BW=614KiB/s (629kB/s)(6144KiB/10004msec) clat (msec): min=228, max=427, avg=334.79, stdev=74.31 lat (msec): min=228, max=427, avg=334.79, stdev=74.31 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 351], | 70.00th=[ 405], 80.00th=[ 405], 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= 1973, max= 4096, per=100.00%, avg=2535.00, stdev=1041.13, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 write: IOPS=0, BW=614KiB/s (629kB/s)(6144KiB/10004msec); 0 zone resets clat (msec): min=161, max=6227, avg=1290.06, stdev=2421.61 lat (msec): min=161, max=6227, avg=1290.14, stdev=2421.61 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 338], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 6208], 95.00th=[ 6208], | 99.00th=[ 6208], 99.50th=[ 6208], 99.90th=[ 6208], 99.95th=[ 6208], | 99.99th=[ 6208] bw ( KiB/s): min= 2000, max= 2031, per=79.65%, avg=2021.60, stdev=12.72, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=25.00%, 500=66.67%, >=2000=8.33% cpu : usr=0.00%, sys=1.76%, ctx=93, 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=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=179685: Fri Aug 7 01:50:45 2026 read: IOPS=0, BW=502KiB/s (514kB/s)(5120KiB/10202msec) clat (msec): min=111, max=480, avg=248.49, stdev=141.46 lat (msec): min=111, max=480, avg=248.49, stdev=141.46 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 111], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 209], 60.00th=[ 209], | 70.00th=[ 268], 80.00th=[ 268], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 4063, max= 4096, per=100.00%, avg=4079.50, stdev=23.33, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=0, BW=703KiB/s (719kB/s)(7168KiB/10202msec); 0 zone resets clat (msec): min=183, max=6005, avg=1254.32, stdev=2110.62 lat (msec): min=183, max=6005, avg=1254.57, stdev=2110.55 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 232], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 527], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 919], 90.00th=[ 6007], 95.00th=[ 6007], | 99.00th=[ 6007], 99.50th=[ 6007], 99.90th=[ 6007], 99.95th=[ 6007], | 99.99th=[ 6007] bw ( KiB/s): min= 1670, max= 2048, per=77.55%, avg=1968.17, stdev=148.75, samples=6 iops : min= 1, max= 2, avg= 1.33, stdev= 0.52, samples=6 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.50%, ctx=155, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1813KiB/s (1856kB/s), 191KiB/s-635KiB/s (195kB/s-650kB/s), io=20.0MiB (20.0MB), run=10004-11297msec WRITE: bw=2538KiB/s (2599kB/s), 453KiB/s-955KiB/s (464kB/s-977kB/s), io=28.0MiB (29.4MB), run=10004-11297msec 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=179697: Fri Aug 7 01:50:58 2026 read: IOPS=0, BW=4043KiB/s (4140kB/s)(12.0MiB/3039msec) clat (msec): min=545, max=1467, avg=1003.22, stdev=461.30 lat (msec): min=545, max=1467, avg=1003.34, stdev=461.30 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.64%, ctx=79, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179698: Fri Aug 7 01:50:58 2026 read: IOPS=0, BW=1259KiB/s (1289kB/s)(4096KiB/3253msec) clat (nsec): min=1144.5M, max=1144.5M, avg=1144535600.00, stdev= 0.00 lat (nsec): min=1144.5M, max=1144.5M, avg=1144538234.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1150], 5.00th=[ 1150], 10.00th=[ 1150], 20.00th=[ 1150], | 30.00th=[ 1150], 40.00th=[ 1150], 50.00th=[ 1150], 60.00th=[ 1150], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2518KiB/s (2579kB/s)(8192KiB/3253msec); 0 zone resets clat (msec): min=848, max=1232, avg=1040.67, stdev=271.77 lat (msec): min=848, max=1233, avg=1041.08, stdev=271.77 clat percentiles (msec): | 1.00th=[ 852], 5.00th=[ 852], 10.00th=[ 852], 20.00th=[ 852], | 30.00th=[ 852], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 1234], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8192, max= 8192, per=81.33%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.37%, ctx=70, 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=179700: Fri Aug 7 01:50:58 2026 write: IOPS=1, BW=4228KiB/s (4330kB/s)(12.0MiB/2906msec); 0 zone resets clat (msec): min=488, max=1504, avg=940.85, stdev=517.11 lat (msec): min=489, max=1505, avg=941.32, stdev=517.22 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 7922, max= 8192, per=79.99%, avg=8057.00, stdev=190.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=9.71%, ctx=119, 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=179702: Fri Aug 7 01:50:58 2026 write: IOPS=1, BW=4886KiB/s (5003kB/s)(12.0MiB/2515msec); 0 zone resets clat (msec): min=540, max=1153, avg=826.41, stdev=308.48 lat (msec): min=542, max=1153, avg=827.23, stdev=307.78 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 1150], 80.00th=[ 1150], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7922, max= 8175, per=79.90%, avg=8048.50, stdev=178.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.09%, ctx=53, 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=5037KiB/s (5157kB/s), 1259KiB/s-4043KiB/s (1289kB/s-4140kB/s), io=16.0MiB (16.8MB), run=3039-3253msec WRITE: bw=9.84MiB/s (10.3MB/s), 2518KiB/s-4886KiB/s (2579kB/s-5003kB/s), io=32.0MiB (33.6MB), run=2515-3253msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179699: Fri Aug 7 01:50:58 2026 read: IOPS=1, BW=5608KiB/s (5743kB/s)(12.0MiB/2191msec) clat (msec): min=625, max=807, avg=723.64, stdev=91.73 lat (msec): min=625, max=807, avg=723.64, stdev=91.73 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 6150, max= 8062, per=100.00%, avg=7106.00, stdev=1351.99, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=22.60%, ctx=422, 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=179701: Fri Aug 7 01:50:58 2026 read: IOPS=0, BW=1251KiB/s (1281kB/s)(4096KiB/3275msec) clat (nsec): min=830568k, max=830568k, avg=830568357.00, stdev= 0.00 lat (nsec): min=830571k, max=830571k, avg=830570659.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2501KiB/s (2561kB/s)(8192KiB/3275msec); 0 zone resets clat (msec): min=753, max=1593, avg=1173.18, stdev=594.14 lat (msec): min=753, max=1593, avg=1173.59, stdev=594.09 clat percentiles (msec): | 1.00th=[ 751], 5.00th=[ 751], 10.00th=[ 751], 20.00th=[ 751], | 30.00th=[ 751], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 1586], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 8015, max= 8015, per=80.11%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=10.20%, ctx=202, 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=179703: Fri Aug 7 01:50:58 2026 write: IOPS=0, BW=3862KiB/s (3954kB/s)(12.0MiB/3182msec); 0 zone resets clat (msec): min=257, max=2139, avg=1042.86, stdev=978.84 lat (msec): min=257, max=2139, avg=1043.16, stdev=978.80 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 2140], 80.00th=[ 2140], 90.00th=[ 2140], 95.00th=[ 2140], | 99.00th=[ 2140], 99.50th=[ 2140], 99.90th=[ 2140], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 8015, max= 8192, per=80.99%, avg=8103.50, stdev=125.16, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.06%, ctx=87, 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=179704: Fri Aug 7 01:50:58 2026 write: IOPS=1, BW=4123KiB/s (4222kB/s)(12.0MiB/2980msec); 0 zone resets clat (msec): min=286, max=1415, avg=966.06, stdev=598.65 lat (msec): min=287, max=1415, avg=966.75, stdev=598.63 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8062, max= 8062, per=80.58%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.20%, ctx=63, 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=5003KiB/s (5123kB/s), 1251KiB/s-5608KiB/s (1281kB/s-5743kB/s), io=16.0MiB (16.8MB), run=2191-3275msec WRITE: bw=9.77MiB/s (10.2MB/s), 2501KiB/s-4123KiB/s (2561kB/s-4222kB/s), io=32.0MiB (33.6MB), run=2980-3275msec