== sanity test 398b: DIO and buffer IO race ============== 21:07:04 (1789088824) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.93016 s, 8.5 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=179624: Thu Sep 10 21:09:15 2026 read: IOPS=13, BW=53.3KiB/s (54.6kB/s)(5992KiB/112416msec) clat (usec): min=30, max=924785, avg=41342.04, stdev=35714.96 lat (usec): min=30, max=924786, avg=41344.56, stdev=35714.79 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 5735], 10.00th=[ 15139], 20.00th=[ 20841], | 30.00th=[ 25297], 40.00th=[ 30016], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 49021], 80.00th=[ 57934], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[139461], 99.50th=[177210], 99.90th=[299893], 99.95th=[926942], | 99.99th=[926942] bw ( KiB/s): min= 5, max= 119, per=24.87%, avg=52.72, stdev=19.50, samples=222 iops : min= 1, max= 29, avg=12.52, stdev= 4.90, samples=222 write: IOPS=14, BW=56.0KiB/s (57.3kB/s)(6296KiB/112416msec); 0 zone resets clat (usec): min=1165, max=269077, avg=31818.19, stdev=31104.07 lat (usec): min=1166, max=269079, avg=31823.77, stdev=31105.46 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1565], 10.00th=[ 2376], 20.00th=[ 4490], | 30.00th=[ 8029], 40.00th=[ 16581], 50.00th=[ 23987], 60.00th=[ 32113], | 70.00th=[ 41157], 80.00th=[ 53740], 90.00th=[ 72877], 95.00th=[ 91751], | 99.00th=[131597], 99.50th=[158335], 99.90th=[189793], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 144, per=25.30%, avg=56.17, stdev=23.18, samples=219 iops : min= 1, max= 36, avg=13.39, stdev= 5.83, samples=219 lat (usec) : 50=0.36%, 100=1.46%, 250=0.33%, 750=0.10%, 1000=0.03% lat (msec) : 2=3.78%, 4=5.27%, 10=8.14%, 20=12.01%, 50=43.20% lat (msec) : 100=21.84%, 250=3.39%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=5.70%, ctx=6970, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179625: Thu Sep 10 21:09:15 2026 read: IOPS=13, BW=53.1KiB/s (54.4kB/s)(5940KiB/111848msec) clat (usec): min=39, max=275785, avg=41076.80, stdev=26454.73 lat (usec): min=39, max=275786, avg=41078.08, stdev=26454.66 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11469], 10.00th=[ 15926], 20.00th=[ 21365], | 30.00th=[ 25297], 40.00th=[ 30278], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 49546], 80.00th=[ 57410], 90.00th=[ 71828], 95.00th=[ 85459], | 99.00th=[139461], 99.50th=[154141], 99.90th=[202376], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 5, max= 103, per=24.95%, avg=52.89, stdev=20.01, samples=220 iops : min= 1, max= 25, avg=12.56, stdev= 5.04, samples=220 write: IOPS=14, BW=56.8KiB/s (58.1kB/s)(6348KiB/111848msec); 0 zone resets clat (usec): min=1091, max=915479, avg=31787.69, stdev=40007.71 lat (usec): min=1092, max=915481, avg=31789.14, stdev=40007.64 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1467], 10.00th=[ 2212], 20.00th=[ 3982], | 30.00th=[ 6783], 40.00th=[ 14353], 50.00th=[ 21890], 60.00th=[ 29754], | 70.00th=[ 39060], 80.00th=[ 52691], 90.00th=[ 76022], 95.00th=[ 95945], | 99.00th=[158335], 99.50th=[185598], 99.90th=[278922], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 7, max= 158, per=25.47%, avg=56.54, stdev=24.53, samples=220 iops : min= 1, max= 39, avg=13.48, stdev= 6.19, samples=220 lat (usec) : 50=0.29%, 100=1.04%, 250=0.16%, 500=0.13% lat (msec) : 2=4.43%, 4=5.99%, 10=7.88%, 20=12.70%, 50=42.22% lat (msec) : 100=21.39%, 250=3.68%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=6.04%, ctx=6918, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179626: Thu Sep 10 21:09:15 2026 read: IOPS=13, BW=53.5KiB/s (54.8kB/s)(6028KiB/112606msec) clat (usec): min=26, max=342348, avg=40883.31, stdev=28288.65 lat (usec): min=26, max=342350, avg=40892.09, stdev=28289.39 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 11076], 10.00th=[ 15664], 20.00th=[ 20841], | 30.00th=[ 24773], 40.00th=[ 29754], 50.00th=[ 34866], 60.00th=[ 40633], | 70.00th=[ 46924], 80.00th=[ 57934], 90.00th=[ 72877], 95.00th=[ 88605], | 99.00th=[143655], 99.50th=[164627], 99.90th=[261096], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 7, max= 104, per=25.10%, avg=53.22, stdev=20.13, samples=221 iops : min= 1, max= 26, avg=12.65, stdev= 5.07, samples=221 write: IOPS=13, BW=55.6KiB/s (56.9kB/s)(6260KiB/112606msec); 0 zone resets clat (usec): min=1146, max=901919, avg=32344.47, stdev=38356.47 lat (usec): min=1146, max=901919, avg=32346.42, stdev=38357.02 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1467], 10.00th=[ 2343], 20.00th=[ 4293], | 30.00th=[ 7242], 40.00th=[ 15008], 50.00th=[ 23200], 60.00th=[ 32900], | 70.00th=[ 42730], 80.00th=[ 55313], 90.00th=[ 74974], 95.00th=[ 90702], | 99.00th=[132645], 99.50th=[160433], 99.90th=[267387], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 7, max= 127, per=24.77%, avg=55.00, stdev=23.42, samples=222 iops : min= 1, max= 31, avg=13.09, stdev= 5.88, samples=222 lat (usec) : 50=0.26%, 100=1.30%, 250=0.33%, 500=0.10% lat (msec) : 2=4.07%, 4=5.70%, 10=8.04%, 20=12.76%, 50=41.86% lat (msec) : 100=22.30%, 250=3.16%, 500=0.10%, 1000=0.03% cpu : usr=0.07%, sys=5.83%, ctx=6928, 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=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=179627: Thu Sep 10 21:09:15 2026 read: IOPS=13, BW=53.6KiB/s (54.9kB/s)(6052KiB/112844msec) clat (usec): min=35, max=1118.1k, avg=40977.83, stdev=38417.61 lat (usec): min=35, max=1118.1k, avg=40980.46, stdev=38418.32 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 9241], 10.00th=[ 14877], | 20.00th=[ 20317], 30.00th=[ 25035], 40.00th=[ 29754], | 50.00th=[ 34866], 60.00th=[ 41157], 70.00th=[ 47449], | 80.00th=[ 55837], 90.00th=[ 72877], 95.00th=[ 94897], | 99.00th=[ 130548], 99.50th=[ 147850], 99.90th=[ 235930], | 99.95th=[1115685], 99.99th=[1115685] bw ( KiB/s): min= 7, max= 152, per=25.30%, avg=53.64, stdev=19.56, samples=221 iops : min= 1, max= 38, avg=12.76, stdev= 4.94, samples=221 write: IOPS=13, BW=55.3KiB/s (56.6kB/s)(6236KiB/112844msec); 0 zone resets clat (usec): min=1163, max=220656, avg=32342.92, stdev=32045.31 lat (usec): min=1163, max=220657, avg=32347.30, stdev=32042.97 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1516], 10.00th=[ 2180], 20.00th=[ 3949], | 30.00th=[ 7308], 40.00th=[ 15139], 50.00th=[ 22938], 60.00th=[ 31851], | 70.00th=[ 43779], 80.00th=[ 57934], 90.00th=[ 77071], 95.00th=[ 98042], | 99.00th=[135267], 99.50th=[139461], 99.90th=[177210], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 7, max= 119, per=24.76%, avg=54.97, stdev=22.80, samples=222 iops : min= 1, max= 29, avg=13.09, stdev= 5.73, samples=222 lat (usec) : 50=0.29%, 100=1.76%, 250=0.16%, 500=0.10% lat (msec) : 2=4.00%, 4=6.28%, 10=7.62%, 20=12.63%, 50=40.98% lat (msec) : 100=21.94%, 250=4.20%, 2000=0.03% cpu : usr=0.05%, sys=5.75%, ctx=6973, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=213KiB/s (218kB/s), 53.1KiB/s-53.6KiB/s (54.4kB/s-54.9kB/s), io=23.4MiB (24.6MB), run=111848-112844msec WRITE: bw=223KiB/s (228kB/s), 55.3KiB/s-56.8KiB/s (56.6kB/s-58.1kB/s), io=24.6MiB (25.7MB), run=111848-112844msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179629: Thu Sep 10 21:09:53 2026 read: IOPS=10, BW=40.1KiB/s (41.1kB/s)(5992KiB/149427msec) clat (msec): min=5, max=944, avg=39.92, stdev=41.63 lat (msec): min=5, max=944, avg=39.92, stdev=41.63 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 57], 90.00th=[ 87], 95.00th=[ 116], | 99.00th=[ 167], 99.50th=[ 192], 99.90th=[ 257], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 7, max= 134, per=25.03%, avg=39.80, stdev=25.28, samples=292 iops : min= 1, max= 33, avg= 9.30, stdev= 6.35, samples=292 write: IOPS=10, BW=42.1KiB/s (43.1kB/s)(6296KiB/149427msec); 0 zone resets clat (msec): min=10, max=292, avg=56.75, stdev=37.49 lat (msec): min=10, max=292, avg=56.75, stdev=37.49 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 55], | 70.00th=[ 66], 80.00th=[ 82], 90.00th=[ 108], 95.00th=[ 130], | 99.00th=[ 190], 99.50th=[ 222], 99.90th=[ 279], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 7, max= 127, per=25.18%, avg=42.05, stdev=24.35, samples=291 iops : min= 1, max= 31, avg= 9.87, stdev= 6.11, samples=291 lat (msec) : 10=2.21%, 20=16.18%, 50=46.74%, 100=24.71%, 250=9.90% lat (msec) : 500=0.23%, 1000=0.03% cpu : usr=0.05%, sys=2.27%, ctx=4835, 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=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=179630: Thu Sep 10 21:09:53 2026 read: IOPS=10, BW=40.1KiB/s (41.0kB/s)(5940KiB/148220msec) clat (msec): min=5, max=1090, avg=39.65, stdev=45.95 lat (msec): min=5, max=1090, avg=39.65, stdev=45.95 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 84], 95.00th=[ 113], | 99.00th=[ 180], 99.50th=[ 205], 99.90th=[ 409], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 183, per=25.29%, avg=40.21, stdev=27.01, samples=288 iops : min= 1, max= 45, avg= 9.40, stdev= 6.76, samples=288 write: IOPS=10, BW=42.8KiB/s (43.9kB/s)(6348KiB/148220msec); 0 zone resets clat (msec): min=9, max=315, avg=56.11, stdev=36.88 lat (msec): min=9, max=315, avg=56.11, stdev=36.89 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 44], 60.00th=[ 54], | 70.00th=[ 66], 80.00th=[ 82], 90.00th=[ 104], 95.00th=[ 129], | 99.00th=[ 190], 99.50th=[ 209], 99.90th=[ 309], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 7, max= 110, per=25.67%, avg=42.88, stdev=24.02, samples=289 iops : min= 1, max= 27, avg=10.07, stdev= 6.03, samples=289 lat (msec) : 10=3.06%, 20=16.86%, 50=46.22%, 100=24.77%, 250=8.79% lat (msec) : 500=0.26%, 2000=0.03% cpu : usr=0.05%, sys=2.30%, ctx=4762, 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=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=179631: Thu Sep 10 21:09:53 2026 read: IOPS=10, BW=40.2KiB/s (41.1kB/s)(6028KiB/150132msec) clat (msec): min=5, max=412, avg=39.18, stdev=36.53 lat (msec): min=5, max=412, avg=39.18, stdev=36.53 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 57], 90.00th=[ 87], 95.00th=[ 112], | 99.00th=[ 174], 99.50th=[ 194], 99.90th=[ 384], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 7, max= 135, per=25.43%, avg=40.43, stdev=25.84, samples=291 iops : min= 1, max= 33, avg= 9.46, stdev= 6.49, samples=291 write: IOPS=10, BW=41.7KiB/s (42.7kB/s)(6260KiB/150132msec); 0 zone resets clat (msec): min=11, max=1132, avg=58.02, stdev=48.46 lat (msec): min=11, max=1132, avg=58.03, stdev=48.46 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 38], 50.00th=[ 45], 60.00th=[ 56], | 70.00th=[ 67], 80.00th=[ 82], 90.00th=[ 108], 95.00th=[ 134], | 99.00th=[ 209], 99.50th=[ 262], 99.90th=[ 321], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 135, per=25.06%, avg=41.85, stdev=25.38, samples=292 iops : min= 1, max= 33, avg= 9.82, stdev= 6.37, samples=292 lat (msec) : 10=2.54%, 20=17.29%, 50=45.57%, 100=25.16%, 250=9.02% lat (msec) : 500=0.39%, 2000=0.03% cpu : usr=0.05%, sys=2.30%, ctx=4852, 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=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=179632: Thu Sep 10 21:09:53 2026 read: IOPS=10, BW=40.8KiB/s (41.8kB/s)(6052KiB/148171msec) clat (msec): min=4, max=295, avg=38.99, stdev=33.24 lat (msec): min=4, max=295, avg=38.99, stdev=33.24 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 88], 95.00th=[ 110], | 99.00th=[ 157], 99.50th=[ 184], 99.90th=[ 243], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 7, max= 152, per=25.90%, avg=41.18, stdev=24.91, samples=287 iops : min= 1, max= 38, avg= 9.65, stdev= 6.25, samples=287 write: IOPS=10, BW=42.1KiB/s (43.1kB/s)(6236KiB/148171msec); 0 zone resets clat (msec): min=12, max=1085, avg=57.01, stdev=45.25 lat (msec): min=12, max=1085, avg=57.01, stdev=45.25 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 45], 60.00th=[ 53], | 70.00th=[ 65], 80.00th=[ 81], 90.00th=[ 107], 95.00th=[ 131], | 99.00th=[ 199], 99.50th=[ 220], 99.90th=[ 279], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 135, per=25.02%, avg=41.79, stdev=24.61, samples=291 iops : min= 1, max= 33, avg= 9.80, stdev= 6.17, samples=291 lat (msec) : 10=2.28%, 20=16.93%, 50=47.69%, 100=23.21%, 250=9.80% lat (msec) : 500=0.07%, 2000=0.03% cpu : usr=0.05%, sys=2.34%, ctx=4844, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=160KiB/s (164kB/s), 40.1KiB/s-40.8KiB/s (41.0kB/s-41.8kB/s), io=23.4MiB (24.6MB), run=148171-150132msec WRITE: bw=167KiB/s (171kB/s), 41.7KiB/s-42.8KiB/s (42.7kB/s-43.9kB/s), io=24.6MiB (25.7MB), run=148171-150132msec 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=179666: Thu Sep 10 21:10:31 2026 read: IOPS=12, BW=206KiB/s (210kB/s)(5920KiB/28800msec) clat (usec): min=38, max=147988, avg=40793.94, stdev=24448.45 lat (usec): min=38, max=147988, avg=40795.01, stdev=24448.46 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 63], 10.00th=[ 15664], 20.00th=[ 22152], | 30.00th=[ 27395], 40.00th=[ 32113], 50.00th=[ 35914], 60.00th=[ 42730], | 70.00th=[ 50594], 80.00th=[ 60031], 90.00th=[ 72877], 95.00th=[ 85459], | 99.00th=[113771], 99.50th=[126354], 99.90th=[147850], 99.95th=[147850], | 99.99th=[147850] bw ( KiB/s): min= 94, max= 384, per=24.60%, avg=204.41, stdev=71.64, samples=56 iops : min= 5, max= 24, avg=11.98, stdev= 4.61, samples=56 write: IOPS=13, BW=221KiB/s (226kB/s)(6368KiB/28800msec); 0 zone resets clat (usec): min=1638, max=172033, avg=34040.99, stdev=31144.10 lat (usec): min=1639, max=172034, avg=34047.37, stdev=31144.37 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2212], 10.00th=[ 3261], 20.00th=[ 5932], | 30.00th=[ 10683], 40.00th=[ 17171], 50.00th=[ 25297], 60.00th=[ 35390], | 70.00th=[ 44827], 80.00th=[ 57410], 90.00th=[ 78119], 95.00th=[ 98042], | 99.00th=[137364], 99.50th=[154141], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 31, max= 478, per=25.31%, avg=221.48, stdev=96.21, samples=56 iops : min= 1, max= 29, avg=13.05, stdev= 6.06, samples=56 lat (usec) : 50=0.13%, 100=3.52%, 250=0.26%, 1000=0.13% lat (msec) : 2=1.43%, 4=5.21%, 10=8.33%, 20=11.07%, 50=41.41% lat (msec) : 100=25.39%, 250=3.12% cpu : usr=0.08%, sys=6.45%, ctx=1807, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179667: Thu Sep 10 21:10:31 2026 read: IOPS=13, BW=209KiB/s (214kB/s)(5744KiB/27430msec) clat (usec): min=41, max=162257, avg=40349.60, stdev=24474.59 lat (usec): min=41, max=162257, avg=40354.72, stdev=24470.41 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 86], 10.00th=[ 16057], 20.00th=[ 22414], | 30.00th=[ 27132], 40.00th=[ 30802], 50.00th=[ 35390], 60.00th=[ 41681], | 70.00th=[ 49546], 80.00th=[ 57410], 90.00th=[ 73925], 95.00th=[ 84411], | 99.00th=[119014], 99.50th=[154141], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 62, max= 383, per=25.60%, avg=212.75, stdev=71.26, samples=53 iops : min= 3, max= 23, avg=12.49, stdev= 4.49, samples=53 write: IOPS=14, BW=239KiB/s (244kB/s)(6544KiB/27430msec); 0 zone resets clat (usec): min=1677, max=206121, avg=31356.59, stdev=29904.58 lat (usec): min=1678, max=206123, avg=31381.50, stdev=29895.66 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2671], 10.00th=[ 3654], 20.00th=[ 6259], | 30.00th=[ 9503], 40.00th=[ 16712], 50.00th=[ 22414], 60.00th=[ 31065], | 70.00th=[ 40109], 80.00th=[ 53216], 90.00th=[ 66847], 95.00th=[ 88605], | 99.00th=[135267], 99.50th=[143655], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 62, max= 480, per=27.17%, avg=237.76, stdev=91.16, samples=54 iops : min= 3, max= 30, avg=14.07, stdev= 5.80, samples=54 lat (usec) : 50=0.26%, 100=2.34%, 500=0.13% lat (msec) : 2=1.17%, 4=4.56%, 10=10.81%, 20=12.89%, 50=42.58% lat (msec) : 100=22.53%, 250=2.73% cpu : usr=0.09%, sys=6.80%, ctx=1821, 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=179668: Thu Sep 10 21:10:31 2026 read: IOPS=14, BW=230KiB/s (235kB/s)(6256KiB/27248msec) clat (usec): min=37, max=140819, avg=38971.46, stdev=24496.25 lat (usec): min=37, max=140820, avg=38972.70, stdev=24496.18 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 14484], 20.00th=[ 20317], | 30.00th=[ 24773], 40.00th=[ 30278], 50.00th=[ 35914], 60.00th=[ 41157], | 70.00th=[ 49021], 80.00th=[ 56361], 90.00th=[ 67634], 95.00th=[ 82314], | 99.00th=[116917], 99.50th=[135267], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 63, max= 446, per=27.47%, avg=228.30, stdev=84.85, samples=53 iops : min= 3, max= 27, avg=13.45, stdev= 5.33, samples=53 write: IOPS=13, BW=221KiB/s (227kB/s)(6032KiB/27248msec); 0 zone resets clat (usec): min=1603, max=187146, avg=31697.90, stdev=29509.97 lat (usec): min=1605, max=187148, avg=31699.95, stdev=29510.21 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2212], 10.00th=[ 3884], 20.00th=[ 6652], | 30.00th=[ 10159], 40.00th=[ 16581], 50.00th=[ 23987], 60.00th=[ 31065], | 70.00th=[ 39060], 80.00th=[ 51643], 90.00th=[ 71828], 95.00th=[ 95945], | 99.00th=[135267], 99.50th=[145753], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 63, max= 537, per=25.30%, avg=221.37, stdev=85.05, samples=52 iops : min= 3, max= 33, avg=13.04, stdev= 5.38, samples=52 lat (usec) : 50=0.39%, 100=3.65%, 250=0.39% lat (msec) : 2=1.56%, 4=3.65%, 10=9.38%, 20=12.89%, 50=42.97% lat (msec) : 100=22.14%, 250=2.99% cpu : usr=0.06%, sys=6.48%, ctx=1896, 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=179669: Thu Sep 10 21:10:31 2026 read: IOPS=13, BW=221KiB/s (226kB/s)(6032KiB/27313msec) clat (usec): min=49, max=165553, avg=41716.45, stdev=28553.35 lat (usec): min=50, max=165554, avg=41717.48, stdev=28553.37 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 63], 10.00th=[ 13829], 20.00th=[ 22152], | 30.00th=[ 27132], 40.00th=[ 31851], 50.00th=[ 36963], 60.00th=[ 42730], | 70.00th=[ 50070], 80.00th=[ 57410], 90.00th=[ 79168], 95.00th=[ 94897], | 99.00th=[147850], 99.50th=[156238], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 31, max= 413, per=26.33%, avg=218.81, stdev=78.05, samples=53 iops : min= 1, max= 25, avg=12.87, stdev= 4.90, samples=53 write: IOPS=14, BW=229KiB/s (235kB/s)(6256KiB/27313msec); 0 zone resets clat (usec): min=1773, max=149738, avg=29160.10, stdev=27714.19 lat (usec): min=1774, max=149740, avg=29163.24, stdev=27715.23 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2409], 10.00th=[ 2999], 20.00th=[ 5080], | 30.00th=[ 7701], 40.00th=[ 14746], 50.00th=[ 21627], 60.00th=[ 28443], | 70.00th=[ 38536], 80.00th=[ 47449], 90.00th=[ 69731], 95.00th=[ 86508], | 99.00th=[121111], 99.50th=[131597], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 31, max= 415, per=26.03%, avg=227.79, stdev=90.85, samples=53 iops : min= 1, max= 25, avg=13.42, stdev= 5.72, samples=53 lat (usec) : 50=0.13%, 100=3.39%, 250=0.39%, 500=0.13%, 1000=0.13% lat (msec) : 2=1.30%, 4=7.29%, 10=9.38%, 20=10.16%, 50=43.36% lat (msec) : 100=20.70%, 250=3.65% cpu : usr=0.08%, sys=6.18%, ctx=1749, 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=832KiB/s (852kB/s), 206KiB/s-230KiB/s (210kB/s-235kB/s), io=23.4MiB (24.5MB), run=27248-28800msec WRITE: bw=875KiB/s (896kB/s), 221KiB/s-239KiB/s (226kB/s-244kB/s), io=24.6MiB (25.8MB), run=27248-28800msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179671: Thu Sep 10 21:10:42 2026 read: IOPS=9, BW=149KiB/s (152kB/s)(5920KiB/39859msec) clat (msec): min=8, max=192, avg=41.55, stdev=30.31 lat (msec): min=8, max=192, avg=41.55, stdev=30.31 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 61], 90.00th=[ 85], 95.00th=[ 106], | 99.00th=[ 150], 99.50th=[ 188], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 31, max= 415, per=24.20%, avg=145.21, stdev=81.17, samples=78 iops : min= 1, max= 25, avg= 8.26, stdev= 5.05, samples=78 write: IOPS=9, BW=160KiB/s (164kB/s)(6368KiB/39859msec); 0 zone resets clat (msec): min=16, max=224, avg=60.89, stdev=36.09 lat (msec): min=16, max=224, avg=60.89, stdev=36.09 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 36], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 61], | 70.00th=[ 72], 80.00th=[ 90], 90.00th=[ 113], 95.00th=[ 130], | 99.00th=[ 190], 99.50th=[ 207], 99.90th=[ 226], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 31, max= 351, per=24.99%, avg=157.96, stdev=78.46, samples=78 iops : min= 1, max= 21, avg= 9.05, stdev= 4.95, samples=78 lat (msec) : 10=0.52%, 20=10.81%, 50=50.26%, 100=27.60%, 250=10.81% cpu : usr=0.05%, sys=2.39%, ctx=1320, 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=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=179672: Thu Sep 10 21:10:42 2026 read: IOPS=9, BW=145KiB/s (148kB/s)(5744KiB/39623msec) clat (msec): min=5, max=222, avg=41.84, stdev=32.14 lat (msec): min=5, max=222, avg=41.84, stdev=32.14 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 60], 90.00th=[ 84], 95.00th=[ 110], | 99.00th=[ 178], 99.50th=[ 205], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 29, max= 474, per=24.65%, avg=147.88, stdev=87.48, samples=76 iops : min= 1, max= 29, avg= 8.42, stdev= 5.50, samples=76 write: IOPS=10, BW=165KiB/s (169kB/s)(6544KiB/39623msec); 0 zone resets clat (msec): min=15, max=263, avg=59.50, stdev=37.93 lat (msec): min=15, max=263, avg=59.53, stdev=37.98 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 36], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 68], 80.00th=[ 82], 90.00th=[ 110], 95.00th=[ 140], | 99.00th=[ 197], 99.50th=[ 205], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 31, max= 411, per=26.00%, avg=164.32, stdev=80.45, samples=78 iops : min= 1, max= 25, avg= 9.46, stdev= 5.05, samples=78 lat (msec) : 10=0.65%, 20=11.85%, 50=49.87%, 100=28.13%, 250=9.38% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.42%, ctx=1287, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179673: Thu Sep 10 21:10:42 2026 read: IOPS=10, BW=162KiB/s (166kB/s)(6256KiB/38706msec) clat (msec): min=7, max=196, avg=40.92, stdev=31.91 lat (msec): min=7, max=196, avg=40.93, stdev=31.91 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 57], 90.00th=[ 81], 95.00th=[ 109], | 99.00th=[ 180], 99.50th=[ 192], 99.90th=[ 197], 99.95th=[ 197], | 99.99th=[ 197] bw ( KiB/s): min= 31, max= 350, per=26.94%, avg=161.66, stdev=88.00, samples=76 iops : min= 1, max= 21, avg= 9.29, stdev= 5.55, samples=76 write: IOPS=9, BW=156KiB/s (160kB/s)(6032KiB/38706msec); 0 zone resets clat (msec): min=13, max=262, avg=59.91, stdev=39.11 lat (msec): min=13, max=262, avg=59.91, stdev=39.11 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 25], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 41], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 67], 80.00th=[ 79], 90.00th=[ 120], 95.00th=[ 150], | 99.00th=[ 203], 99.50th=[ 207], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 31, max= 415, per=24.27%, avg=153.36, stdev=76.23, samples=76 iops : min= 1, max= 25, avg= 8.76, stdev= 4.77, samples=76 lat (msec) : 10=0.65%, 20=13.28%, 50=50.26%, 100=25.78%, 250=9.90% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.44%, ctx=1321, 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=179674: Thu Sep 10 21:10:42 2026 read: IOPS=9, BW=152KiB/s (156kB/s)(6032KiB/39616msec) clat (msec): min=7, max=331, avg=42.90, stdev=35.99 lat (msec): min=7, max=331, avg=42.91, stdev=35.99 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 36], | 70.00th=[ 44], 80.00th=[ 61], 90.00th=[ 96], 95.00th=[ 113], | 99.00th=[ 163], 99.50th=[ 201], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 384, per=25.48%, avg=152.91, stdev=80.06, samples=77 iops : min= 1, max= 24, avg= 8.75, stdev= 5.08, samples=77 write: IOPS=9, BW=158KiB/s (162kB/s)(6256KiB/39616msec); 0 zone resets clat (msec): min=15, max=269, avg=59.59, stdev=35.59 lat (msec): min=15, max=269, avg=59.60, stdev=35.60 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 25], 10.00th=[ 27], 20.00th=[ 32], | 30.00th=[ 37], 40.00th=[ 43], 50.00th=[ 50], 60.00th=[ 58], | 70.00th=[ 69], 80.00th=[ 86], 90.00th=[ 105], 95.00th=[ 126], | 99.00th=[ 188], 99.50th=[ 220], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 383, per=25.33%, avg=160.09, stdev=84.08, samples=77 iops : min= 1, max= 23, avg= 9.21, stdev= 5.33, samples=77 lat (msec) : 10=0.91%, 20=11.46%, 50=50.39%, 100=26.17%, 250=10.81% lat (msec) : 500=0.26% cpu : usr=0.06%, sys=2.36%, ctx=1270, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=601KiB/s (615kB/s), 145KiB/s-162KiB/s (148kB/s-166kB/s), io=23.4MiB (24.5MB), run=38706-39859msec WRITE: bw=632KiB/s (647kB/s), 156KiB/s-165KiB/s (160kB/s-169kB/s), io=24.6MiB (25.8MB), run=38706-39859msec 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: Thu Sep 10 21:10:57 2026 read: IOPS=1, BW=2002KiB/s (2050kB/s)(7168KiB/3580msec) clat (msec): min=124, max=605, avg=247.73, stdev=166.17 lat (msec): min=124, max=605, avg=247.73, stdev=166.17 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 136], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 218], 60.00th=[ 241], | 70.00th=[ 241], 80.00th=[ 259], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1969, max= 4117, per=53.84%, avg=2524.50, stdev=1062.15, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1430KiB/s (1464kB/s)(5120KiB/3580msec); 0 zone resets clat (msec): min=115, max=744, avg=358.67, stdev=236.16 lat (msec): min=115, max=745, avg=358.75, stdev=236.16 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 115], | 30.00th=[ 253], 40.00th=[ 253], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 2039, max= 6107, per=62.04%, avg=4073.00, stdev=2876.51, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 250=50.00%, 500=33.33%, 750=16.67% cpu : usr=0.03%, sys=14.64%, ctx=182, 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=179687: Thu Sep 10 21:10:57 2026 read: IOPS=0, BW=527KiB/s (539kB/s)(2048KiB/3888msec) clat (usec): min=485, max=161571, avg=81028.24, stdev=113904.99 lat (usec): min=486, max=161573, avg=81029.81, stdev=113905.55 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 486], | 30.00th=[ 486], 40.00th=[ 486], 50.00th=[ 486], 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= 1462, max= 2000, per=36.92%, avg=1731.00, stdev=380.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2634KiB/s (2697kB/s)(10.0MiB/3888msec); 0 zone resets clat (msec): min=168, max=834, avg=347.85, stdev=195.70 lat (msec): min=168, max=835, avg=348.93, stdev=195.60 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 209], | 30.00th=[ 218], 40.00th=[ 247], 50.00th=[ 257], 60.00th=[ 326], | 70.00th=[ 326], 80.00th=[ 447], 90.00th=[ 451], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 2011, max= 4079, per=54.76%, avg=3594.80, stdev=887.16, samples=5 iops : min= 1, max= 3, avg= 2.60, stdev= 0.89, samples=5 lat (usec) : 500=8.33% lat (msec) : 250=41.67%, 500=41.67%, 1000=8.33% cpu : usr=0.00%, sys=17.78%, ctx=124, 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=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: Thu Sep 10 21:10:57 2026 read: IOPS=1, BW=1407KiB/s (1441kB/s)(6144KiB/4367msec) clat (usec): min=854, max=296163, avg=135578.31, stdev=113225.16 lat (usec): min=855, max=296164, avg=135579.36, stdev=113225.29 clat percentiles (usec): | 1.00th=[ 857], 5.00th=[ 857], 10.00th=[ 857], 20.00th=[ 33817], | 30.00th=[ 33817], 40.00th=[ 98042], 50.00th=[ 98042], 60.00th=[162530], | 70.00th=[223347], 80.00th=[223347], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 1973, max= 4000, per=53.31%, avg=2499.75, stdev=1000.35, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1407KiB/s (1441kB/s)(6144KiB/4367msec); 0 zone resets clat (msec): min=345, max=923, avg=550.79, stdev=237.18 lat (msec): min=346, max=923, avg=550.87, stdev=237.16 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 443], | 70.00th=[ 776], 80.00th=[ 776], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 1969, max= 2039, per=30.48%, avg=2001.17, stdev=26.64, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (usec) : 1000=8.33% lat (msec) : 50=8.33%, 100=8.33%, 250=16.67%, 500=41.67%, 1000=16.67% cpu : usr=0.00%, sys=10.86%, ctx=215, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179689: Thu Sep 10 21:10:57 2026 read: IOPS=1, BW=1760KiB/s (1802kB/s)(5120KiB/2909msec) clat (usec): min=309, max=243359, avg=85892.79, stdev=118721.93 lat (usec): min=310, max=243360, avg=85893.70, stdev=118722.00 clat percentiles (usec): | 1.00th=[ 310], 5.00th=[ 310], 10.00th=[ 310], 20.00th=[ 310], | 30.00th=[ 515], 40.00th=[ 515], 50.00th=[ 775], 60.00th=[ 775], | 70.00th=[183501], 80.00th=[183501], 90.00th=[244319], 95.00th=[244319], | 99.00th=[244319], 99.50th=[244319], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2464KiB/s (2523kB/s)(7168KiB/2909msec); 0 zone resets clat (msec): min=91, max=620, avg=332.59, stdev=188.27 lat (msec): min=91, max=620, avg=332.66, stdev=188.28 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 112], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 384], 60.00th=[ 384], | 70.00th=[ 384], 80.00th=[ 456], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 1412, max= 4071, per=41.10%, avg=2698.20, stdev=1244.97, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (usec) : 500=8.33%, 750=8.33%, 1000=8.33% lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=15.17%, ctx=107, 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=4690KiB/s (4802kB/s), 527KiB/s-2002KiB/s (539kB/s-2050kB/s), io=20.0MiB (20.0MB), run=2909-4367msec WRITE: bw=6566KiB/s (6723kB/s), 1407KiB/s-2634KiB/s (1441kB/s-2697kB/s), io=28.0MiB (29.4MB), run=2909-4367msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179691: Thu Sep 10 21:10:57 2026 read: IOPS=1, BW=1741KiB/s (1783kB/s)(7168KiB/4117msec) clat (msec): min=69, max=703, avg=263.33, stdev=242.81 lat (msec): min=69, max=703, avg=263.35, stdev=242.80 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 89], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 153], 60.00th=[ 192], | 70.00th=[ 192], 80.00th=[ 502], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1383, max= 4007, per=52.90%, avg=2356.00, stdev=1140.58, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1244KiB/s (1273kB/s)(5120KiB/4117msec); 0 zone resets clat (msec): min=130, max=1107, avg=393.80, stdev=420.49 lat (msec): min=130, max=1107, avg=393.90, stdev=420.49 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 131], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 150], 60.00th=[ 150], | 70.00th=[ 447], 80.00th=[ 447], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 2043, max= 4096, per=49.23%, avg=3069.50, stdev=1451.69, samples=2 iops : min= 1, max= 4, avg= 2.50, stdev= 2.12, samples=2 lat (msec) : 100=16.67%, 250=50.00%, 500=8.33%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=6.71%, ctx=105, 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=179692: Thu Sep 10 21:10:57 2026 read: IOPS=0, BW=466KiB/s (477kB/s)(2048KiB/4394msec) clat (msec): min=193, max=200, avg=196.88, stdev= 5.37 lat (msec): min=193, max=200, avg=196.88, stdev= 5.37 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 194], 60.00th=[ 201], | 70.00th=[ 201], 80.00th=[ 201], 90.00th=[ 201], 95.00th=[ 201], | 99.00th=[ 201], 99.50th=[ 201], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 1889, max= 2039, per=44.10%, avg=1964.00, stdev=106.07, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2330KiB/s (2386kB/s)(10.0MiB/4394msec); 0 zone resets clat (msec): min=116, max=1039, avg=366.93, stdev=274.72 lat (msec): min=116, max=1039, avg=367.08, stdev=274.71 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 138], | 30.00th=[ 140], 40.00th=[ 167], 50.00th=[ 342], 60.00th=[ 397], | 70.00th=[ 405], 80.00th=[ 460], 90.00th=[ 464], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1889, max= 4096, per=51.76%, avg=3227.00, stdev=1175.01, samples=5 iops : min= 1, max= 4, avg= 2.40, stdev= 1.34, samples=5 lat (msec) : 250=50.00%, 500=41.67%, 2000=8.33% cpu : usr=0.02%, sys=5.28%, ctx=139, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179693: Thu Sep 10 21:10:57 2026 read: IOPS=1, BW=1520KiB/s (1557kB/s)(6144KiB/4041msec) clat (msec): min=100, max=393, avg=243.44, stdev=122.67 lat (msec): min=100, max=393, avg=243.44, stdev=122.67 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 121], | 30.00th=[ 121], 40.00th=[ 224], 50.00th=[ 224], 60.00th=[ 251], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 1889, max= 4071, per=74.42%, avg=3314.67, stdev=1235.43, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1520KiB/s (1557kB/s)(6144KiB/4041msec); 0 zone resets clat (msec): min=170, max=641, avg=413.79, stdev=168.74 lat (msec): min=170, max=641, avg=413.87, stdev=168.74 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 472], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1889, max= 3992, per=39.97%, avg=2492.00, stdev=1002.66, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 250=33.33%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=3.02%, ctx=67, 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=179694: Thu Sep 10 21:10:57 2026 read: IOPS=1, BW=1114KiB/s (1140kB/s)(5120KiB/4598msec) clat (msec): min=32, max=587, avg=337.27, stdev=222.00 lat (msec): min=32, max=587, avg=337.28, stdev=222.00 clat percentiles (msec): | 1.00th=[ 33], 5.00th=[ 33], 10.00th=[ 33], 20.00th=[ 33], | 30.00th=[ 262], 40.00th=[ 262], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 518], 80.00th=[ 518], 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= 1882, max= 4071, per=59.88%, avg=2667.00, stdev=1218.73, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1559KiB/s (1596kB/s)(7168KiB/4598msec); 0 zone resets clat (msec): min=88, max=712, avg=373.92, stdev=224.99 lat (msec): min=88, max=712, avg=374.00, stdev=224.98 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 190], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 376], 60.00th=[ 485], | 70.00th=[ 485], 80.00th=[ 558], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1398, max= 2043, per=30.51%, avg=1902.00, stdev=282.15, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 50=8.33%, 100=8.33%, 250=16.67%, 500=33.33%, 750=33.33% cpu : usr=0.00%, sys=4.89%, ctx=147, 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=4454KiB/s (4561kB/s), 466KiB/s-1741KiB/s (477kB/s-1783kB/s), io=20.0MiB (20.0MB), run=4041-4598msec WRITE: bw=6236KiB/s (6385kB/s), 1244KiB/s-2330KiB/s (1273kB/s-2386kB/s), io=28.0MiB (29.4MB), run=4041-4598msec 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=179706: Thu Sep 10 21:11:10 2026 read: IOPS=1, BW=5863KiB/s (6003kB/s)(12.0MiB/2096msec) clat (msec): min=650, max=694, avg=668.02, stdev=23.61 lat (msec): min=650, max=694, avg=668.02, stdev=23.61 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 8000, max= 8143, per=100.00%, avg=8071.50, stdev=101.12, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=18.33%, ctx=289, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179707: Thu Sep 10 21:11:10 2026 read: IOPS=0, BW=1933KiB/s (1979kB/s)(4096KiB/2119msec) clat (nsec): min=538941k, max=538941k, avg=538940722.00, stdev= 0.00 lat (nsec): min=538943k, max=538943k, avg=538943435.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 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= 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=3866KiB/s (3959kB/s)(8192KiB/2119msec); 0 zone resets clat (msec): min=643, max=876, avg=759.94, stdev=164.32 lat (msec): min=644, max=876, avg=760.22, stdev=164.20 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 877], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 8000, max= 8000, per=67.48%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=7.37%, ctx=104, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179708: Thu Sep 10 21:11:10 2026 write: IOPS=1, BW=4560KiB/s (4669kB/s)(12.0MiB/2695msec); 0 zone resets clat (msec): min=337, max=1808, avg=872.58, stdev=813.36 lat (msec): min=340, max=1808, avg=873.90, stdev=812.25 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8062, max= 8126, per=68.27%, avg=8094.00, stdev=45.25, 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=0.00%, sys=3.86%, ctx=65, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179709: Thu Sep 10 21:11:10 2026 write: IOPS=1, BW=4446KiB/s (4552kB/s)(12.0MiB/2764msec); 0 zone resets clat (msec): min=656, max=1050, avg=864.19, stdev=197.51 lat (msec): min=659, max=1051, avg=865.55, stdev=196.71 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 1053], 80.00th=[ 1053], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 8062, max= 8143, per=68.35%, avg=8102.50, stdev=57.28, 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=0.11%, sys=4.92%, ctx=66, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=7732KiB/s (7918kB/s), 1933KiB/s-5863KiB/s (1979kB/s-6003kB/s), io=16.0MiB (16.8MB), run=2096-2119msec WRITE: bw=11.6MiB/s (12.1MB/s), 3866KiB/s-4560KiB/s (3959kB/s-4669kB/s), io=32.0MiB (33.6MB), run=2119-2764msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179702: Thu Sep 10 21:11:10 2026 read: IOPS=1, BW=5473KiB/s (5605kB/s)(12.0MiB/2245msec) clat (msec): min=425, max=1142, avg=691.92, stdev=392.54 lat (msec): min=425, max=1142, avg=691.92, stdev=392.54 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 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= 5603, max= 8110, per=100.00%, avg=6856.50, stdev=1772.72, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.19%, ctx=76, 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=179703: Thu Sep 10 21:11:10 2026 read: IOPS=0, BW=1332KiB/s (1364kB/s)(4096KiB/3074msec) clat (nsec): min=1545.5M, max=1545.5M, avg=1545535905.00, stdev= 0.00 lat (nsec): min=1545.5M, max=1545.5M, avg=1545538098.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1552], 5.00th=[ 1552], 10.00th=[ 1552], 20.00th=[ 1552], | 30.00th=[ 1552], 40.00th=[ 1552], 50.00th=[ 1552], 60.00th=[ 1552], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2665KiB/s (2729kB/s)(8192KiB/3074msec); 0 zone resets clat (msec): min=506, max=816, avg=661.30, stdev=218.95 lat (msec): min=510, max=817, avg=664.14, stdev=216.65 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 818], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 8078, max= 8078, per=75.79%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.11%, ctx=67, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179704: Thu Sep 10 21:11:10 2026 write: IOPS=0, BW=4004KiB/s (4100kB/s)(12.0MiB/3069msec); 0 zone resets clat (msec): min=293, max=2341, avg=984.01, stdev=1175.83 lat (msec): min=294, max=2342, avg=984.61, stdev=1175.86 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 2333], 80.00th=[ 2333], 90.00th=[ 2333], 95.00th=[ 2333], | 99.00th=[ 2333], 99.50th=[ 2333], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 8078, max= 8078, per=75.79%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.52%, ctx=74, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179705: Thu Sep 10 21:11:10 2026 write: IOPS=1, BW=5163KiB/s (5287kB/s)(12.0MiB/2380msec); 0 zone resets clat (msec): min=311, max=1383, avg=728.64, stdev=573.86 lat (msec): min=313, max=1383, avg=729.55, stdev=573.28 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 493], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 5587, max= 8175, per=64.56%, avg=6881.00, stdev=1829.99, 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=0.00%, sys=5.25%, ctx=62, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5330KiB/s (5458kB/s), 1332KiB/s-5473KiB/s (1364kB/s-5605kB/s), io=16.0MiB (16.8MB), run=2245-3074msec WRITE: bw=10.4MiB/s (10.9MB/s), 2665KiB/s-5163KiB/s (2729kB/s-5287kB/s), io=32.0MiB (33.6MB), run=2380-3074msec