== sanity test 398b: DIO and buffer IO race ============== 12:57:31 (1786813051) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.21244 s, 8.1 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=144387: Sat Aug 15 12:59:50 2026 read: IOPS=12, BW=50.3KiB/s (51.5kB/s)(5992KiB/119153msec) clat (usec): min=41, max=557638, avg=41051.35, stdev=32880.80 lat (usec): min=41, max=557639, avg=41055.25, stdev=32881.05 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 98], 10.00th=[ 14222], 20.00th=[ 19530], | 30.00th=[ 23987], 40.00th=[ 29230], 50.00th=[ 35390], 60.00th=[ 41157], | 70.00th=[ 48497], 80.00th=[ 57410], 90.00th=[ 74974], 95.00th=[ 92799], | 99.00th=[145753], 99.50th=[185598], 99.90th=[329253], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 7, max= 110, per=25.02%, avg=49.79, stdev=20.12, samples=235 iops : min= 1, max= 27, avg=11.83, stdev= 5.04, samples=235 write: IOPS=13, BW=52.8KiB/s (54.1kB/s)(6296KiB/119153msec); 0 zone resets clat (usec): min=1188, max=295622, avg=36539.13, stdev=35999.92 lat (usec): min=1190, max=295625, avg=36541.52, stdev=35999.69 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1713], 10.00th=[ 2638], 20.00th=[ 5407], | 30.00th=[ 9765], 40.00th=[ 18744], 50.00th=[ 27395], 60.00th=[ 36963], | 70.00th=[ 47973], 80.00th=[ 62653], 90.00th=[ 82314], 95.00th=[106431], | 99.00th=[156238], 99.50th=[198181], 99.90th=[248513], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 5, max= 119, per=25.18%, avg=52.38, stdev=22.00, samples=235 iops : min= 1, max= 29, avg=12.46, stdev= 5.53, samples=235 lat (usec) : 50=0.10%, 100=2.34%, 250=0.49%, 500=0.26% lat (msec) : 2=3.29%, 4=4.98%, 10=7.65%, 20=12.21%, 50=40.59% lat (msec) : 100=23.14%, 250=4.82%, 500=0.10%, 750=0.03% cpu : usr=0.09%, sys=6.07%, ctx=7210, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144388: Sat Aug 15 12:59:50 2026 read: IOPS=12, BW=49.7KiB/s (50.9kB/s)(5940KiB/119528msec) clat (usec): min=36, max=574299, avg=40602.48, stdev=30452.13 lat (usec): min=37, max=574301, avg=40604.99, stdev=30452.67 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 145], 10.00th=[ 15008], 20.00th=[ 20841], | 30.00th=[ 25035], 40.00th=[ 29230], 50.00th=[ 34341], 60.00th=[ 40633], | 70.00th=[ 48497], 80.00th=[ 57410], 90.00th=[ 72877], 95.00th=[ 90702], | 99.00th=[141558], 99.50th=[177210], 99.90th=[210764], 99.95th=[574620], | 99.99th=[574620] bw ( KiB/s): min= 5, max= 118, per=24.94%, avg=49.62, stdev=20.52, samples=234 iops : min= 1, max= 29, avg=11.77, stdev= 5.16, samples=234 write: IOPS=13, BW=53.1KiB/s (54.4kB/s)(6348KiB/119528msec); 0 zone resets clat (usec): min=1147, max=396796, avg=37169.87, stdev=39519.02 lat (usec): min=1149, max=396799, avg=37173.77, stdev=39519.00 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1729], 10.00th=[ 2540], 20.00th=[ 4752], | 30.00th=[ 9634], 40.00th=[ 18482], 50.00th=[ 27657], 60.00th=[ 37487], | 70.00th=[ 46924], 80.00th=[ 62653], 90.00th=[ 82314], 95.00th=[106431], | 99.00th=[191890], 99.50th=[231736], 99.90th=[358613], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 7, max= 158, per=25.53%, avg=53.11, stdev=23.60, samples=234 iops : min= 1, max= 39, avg=12.65, stdev= 5.91, samples=234 lat (usec) : 50=0.13%, 100=1.89%, 250=0.55%, 500=0.13%, 750=0.03% lat (msec) : 2=3.45%, 4=5.37%, 10=7.62%, 20=11.04%, 50=41.73% lat (msec) : 100=23.37%, 250=4.49%, 500=0.16%, 750=0.03% cpu : usr=0.09%, sys=6.04%, ctx=7112, 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=144389: Sat Aug 15 12:59:50 2026 read: IOPS=12, BW=51.2KiB/s (52.5kB/s)(6028KiB/117651msec) clat (usec): min=40, max=377420, avg=38820.69, stdev=27964.64 lat (usec): min=40, max=377420, avg=38825.39, stdev=27965.35 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 77], 10.00th=[ 13304], 20.00th=[ 19268], | 30.00th=[ 23462], 40.00th=[ 27919], 50.00th=[ 33424], 60.00th=[ 40109], | 70.00th=[ 47973], 80.00th=[ 55837], 90.00th=[ 69731], 95.00th=[ 85459], | 99.00th=[128451], 99.50th=[154141], 99.90th=[225444], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 7, max= 119, per=25.67%, avg=51.08, stdev=21.09, samples=231 iops : min= 1, max= 29, avg=12.14, stdev= 5.28, samples=231 write: IOPS=13, BW=53.2KiB/s (54.5kB/s)(6260KiB/117651msec); 0 zone resets clat (usec): min=1213, max=743063, avg=37669.25, stdev=41584.07 lat (usec): min=1214, max=743065, avg=37672.50, stdev=41583.76 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1844], 10.00th=[ 2769], 20.00th=[ 5604], | 30.00th=[ 10552], 40.00th=[ 19268], 50.00th=[ 28443], 60.00th=[ 37487], | 70.00th=[ 47973], 80.00th=[ 62129], 90.00th=[ 82314], 95.00th=[105382], | 99.00th=[170918], 99.50th=[202376], 99.90th=[358613], 99.95th=[742392], | 99.99th=[742392] bw ( KiB/s): min= 7, max= 123, per=25.47%, avg=52.98, stdev=21.83, samples=231 iops : min= 1, max= 30, avg=12.61, stdev= 5.48, samples=231 lat (usec) : 50=0.10%, 100=2.93%, 250=0.52%, 500=0.13%, 1000=0.03% lat (msec) : 2=3.03%, 4=4.79%, 10=7.45%, 20=12.21%, 50=40.72% lat (msec) : 100=23.54%, 250=4.39%, 500=0.13%, 750=0.03% cpu : usr=0.09%, sys=6.12%, ctx=7117, 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=144390: Sat Aug 15 12:59:50 2026 read: IOPS=12, BW=50.3KiB/s (51.5kB/s)(6052KiB/120353msec) clat (usec): min=35, max=369629, avg=40231.09, stdev=30573.89 lat (usec): min=36, max=369630, avg=40233.02, stdev=30574.92 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 71], 10.00th=[ 11731], 20.00th=[ 19268], | 30.00th=[ 23987], 40.00th=[ 29230], 50.00th=[ 34341], 60.00th=[ 41157], | 70.00th=[ 48497], 80.00th=[ 57934], 90.00th=[ 74974], 95.00th=[ 91751], | 99.00th=[133694], 99.50th=[166724], 99.90th=[316670], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 7, max= 119, per=25.12%, avg=49.98, stdev=20.62, samples=235 iops : min= 1, max= 29, avg=11.86, stdev= 5.15, samples=235 write: IOPS=12, BW=51.8KiB/s (53.1kB/s)(6236KiB/120353msec); 0 zone resets clat (usec): min=1016, max=657033, avg=38034.20, stdev=40999.69 lat (usec): min=1018, max=657036, avg=38039.88, stdev=41000.27 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1729], 10.00th=[ 2704], 20.00th=[ 4948], | 30.00th=[ 9634], 40.00th=[ 19792], 50.00th=[ 28181], 60.00th=[ 38011], | 70.00th=[ 49546], 80.00th=[ 62653], 90.00th=[ 84411], 95.00th=[108528], | 99.00th=[160433], 99.50th=[225444], 99.90th=[325059], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 5, max= 134, per=24.69%, avg=51.35, stdev=21.04, samples=236 iops : min= 1, max= 33, avg=12.21, stdev= 5.29, samples=236 lat (usec) : 50=0.26%, 100=2.99%, 250=0.65%, 500=0.10%, 750=0.03% lat (msec) : 2=3.48%, 4=5.08%, 10=7.32%, 20=10.94%, 50=40.30% lat (msec) : 100=23.89%, 250=4.65%, 500=0.26%, 750=0.03% cpu : usr=0.08%, sys=6.10%, ctx=7253, 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=200KiB/s (204kB/s), 49.7KiB/s-51.2KiB/s (50.9kB/s-52.5kB/s), io=23.4MiB (24.6MB), run=117651-120353msec WRITE: bw=209KiB/s (214kB/s), 51.8KiB/s-53.2KiB/s (53.1kB/s-54.5kB/s), io=24.6MiB (25.7MB), run=117651-120353msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144382: Sat Aug 15 13:02:13 2026 read: IOPS=5, BW=22.7KiB/s (23.2kB/s)(5992KiB/264039msec) clat (msec): min=5, max=592, avg=40.16, stdev=40.44 lat (msec): min=5, max=592, avg=40.17, stdev=40.44 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 78], 95.00th=[ 107], | 99.00th=[ 197], 99.50th=[ 275], 99.90th=[ 422], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 7, max= 104, per=27.22%, avg=24.49, stdev=16.13, samples=472 iops : min= 1, max= 26, avg= 5.49, stdev= 4.07, samples=472 write: IOPS=5, BW=23.8KiB/s (24.4kB/s)(6296KiB/264039msec); 0 zone resets clat (msec): min=34, max=575, avg=129.26, stdev=59.93 lat (msec): min=34, max=575, avg=129.26, stdev=59.93 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 63], 10.00th=[ 70], 20.00th=[ 83], | 30.00th=[ 94], 40.00th=[ 105], 50.00th=[ 115], 60.00th=[ 129], | 70.00th=[ 146], 80.00th=[ 167], 90.00th=[ 201], 95.00th=[ 249], | 99.00th=[ 347], 99.50th=[ 368], 99.90th=[ 477], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 55, per=24.92%, avg=23.68, stdev=10.28, samples=512 iops : min= 1, max= 13, avg= 5.28, stdev= 2.62, samples=512 lat (msec) : 10=2.47%, 20=13.44%, 50=22.14%, 100=25.98%, 250=33.20% lat (msec) : 500=2.70%, 750=0.07% cpu : usr=0.05%, sys=1.56%, ctx=5484, 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=144383: Sat Aug 15 13:02:13 2026 read: IOPS=5, BW=22.6KiB/s (23.2kB/s)(5940KiB/262544msec) clat (msec): min=5, max=601, avg=38.50, stdev=39.28 lat (msec): min=5, max=601, avg=38.51, stdev=39.28 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 53], 90.00th=[ 74], 95.00th=[ 96], | 99.00th=[ 228], 99.50th=[ 266], 99.90th=[ 426], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 7, max= 102, per=27.92%, avg=25.13, stdev=16.27, samples=456 iops : min= 1, max= 25, avg= 5.65, stdev= 4.08, samples=456 write: IOPS=6, BW=24.2KiB/s (24.8kB/s)(6348KiB/262544msec); 0 zone resets clat (msec): min=39, max=503, avg=129.14, stdev=59.97 lat (msec): min=39, max=503, avg=129.14, stdev=59.97 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 80], | 30.00th=[ 92], 40.00th=[ 105], 50.00th=[ 116], 60.00th=[ 131], | 70.00th=[ 150], 80.00th=[ 171], 90.00th=[ 203], 95.00th=[ 239], | 99.00th=[ 347], 99.50th=[ 384], 99.90th=[ 443], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7, max= 63, per=25.05%, avg=23.80, stdev=10.37, samples=514 iops : min= 1, max= 15, avg= 5.31, stdev= 2.65, samples=514 lat (msec) : 10=2.21%, 20=13.09%, 50=23.31%, 100=26.37%, 250=32.68% lat (msec) : 500=2.28%, 750=0.07% cpu : usr=0.05%, sys=1.54%, ctx=5335, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144384: Sat Aug 15 13:02:13 2026 read: IOPS=5, BW=22.9KiB/s (23.5kB/s)(6028KiB/262913msec) clat (msec): min=6, max=341, avg=39.27, stdev=36.06 lat (msec): min=6, max=341, avg=39.27, stdev=36.06 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 43], 80.00th=[ 54], 90.00th=[ 77], 95.00th=[ 100], | 99.00th=[ 192], 99.50th=[ 245], 99.90th=[ 321], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 104, per=27.64%, avg=24.87, stdev=16.10, samples=468 iops : min= 1, max= 26, avg= 5.58, stdev= 4.06, samples=468 write: IOPS=5, BW=23.8KiB/s (24.4kB/s)(6260KiB/262913msec); 0 zone resets clat (msec): min=31, max=762, avg=129.91, stdev=61.87 lat (msec): min=31, max=762, avg=129.91, stdev=61.87 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 82], | 30.00th=[ 94], 40.00th=[ 105], 50.00th=[ 116], 60.00th=[ 130], | 70.00th=[ 148], 80.00th=[ 167], 90.00th=[ 205], 95.00th=[ 245], | 99.00th=[ 326], 99.50th=[ 418], 99.90th=[ 510], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 63, per=24.81%, avg=23.57, stdev=10.19, samples=512 iops : min= 1, max= 15, avg= 5.25, stdev= 2.60, samples=512 lat (msec) : 10=2.38%, 20=12.27%, 50=24.28%, 100=26.01%, 250=32.45% lat (msec) : 500=2.51%, 750=0.07%, 1000=0.03% cpu : usr=0.03%, sys=1.62%, ctx=5455, 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=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=144385: Sat Aug 15 13:02:13 2026 read: IOPS=5, BW=23.4KiB/s (23.9kB/s)(6052KiB/259026msec) clat (msec): min=6, max=367, avg=37.88, stdev=35.79 lat (msec): min=6, max=367, avg=37.89, stdev=35.79 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 52], 90.00th=[ 73], 95.00th=[ 95], | 99.00th=[ 197], 99.50th=[ 271], 99.90th=[ 334], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 7, max= 119, per=27.91%, avg=25.12, stdev=17.07, samples=465 iops : min= 1, max= 29, avg= 5.63, stdev= 4.30, samples=465 write: IOPS=6, BW=24.1KiB/s (24.7kB/s)(6236KiB/259026msec); 0 zone resets clat (msec): min=40, max=700, avg=129.10, stdev=62.94 lat (msec): min=40, max=700, avg=129.11, stdev=62.94 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 82], | 30.00th=[ 91], 40.00th=[ 103], 50.00th=[ 115], 60.00th=[ 129], | 70.00th=[ 144], 80.00th=[ 169], 90.00th=[ 207], 95.00th=[ 251], | 99.00th=[ 359], 99.50th=[ 405], 99.90th=[ 464], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 55, per=24.97%, avg=23.72, stdev=10.52, samples=506 iops : min= 1, max= 13, avg= 5.29, stdev= 2.67, samples=506 lat (msec) : 10=2.21%, 20=13.12%, 50=24.32%, 100=26.79%, 250=30.79% lat (msec) : 500=2.73%, 750=0.03% cpu : usr=0.04%, sys=1.63%, ctx=5520, 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=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=90.9KiB/s (93.1kB/s), 22.6KiB/s-23.4KiB/s (23.2kB/s-23.9kB/s), io=23.4MiB (24.6MB), run=259026-264039msec WRITE: bw=95.2KiB/s (97.5kB/s), 23.8KiB/s-24.2KiB/s (24.4kB/s-24.8kB/s), io=24.6MiB (25.7MB), run=259026-264039msec 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=144459: Sat Aug 15 13:02:57 2026 read: IOPS=11, BW=180KiB/s (184kB/s)(5920KiB/32924msec) clat (usec): min=33, max=243824, avg=43310.76, stdev=36668.08 lat (usec): min=34, max=243825, avg=43312.23, stdev=36668.04 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 62], 10.00th=[ 75], 20.00th=[ 99], | 30.00th=[ 23200], 40.00th=[ 33817], 50.00th=[ 40633], 60.00th=[ 48497], | 70.00th=[ 57410], 80.00th=[ 68682], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[166724], 99.50th=[219153], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 62, max= 341, per=25.39%, avg=179.23, stdev=66.99, samples=64 iops : min= 3, max= 21, avg=10.44, stdev= 4.26, samples=64 write: IOPS=12, BW=193KiB/s (198kB/s)(6368KiB/32924msec); 0 zone resets clat (usec): min=1500, max=228954, avg=41561.61, stdev=41892.90 lat (usec): min=1503, max=228955, avg=41564.89, stdev=41892.02 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2671], 10.00th=[ 4113], 20.00th=[ 7111], | 30.00th=[ 10683], 40.00th=[ 16319], 50.00th=[ 27132], 60.00th=[ 39584], | 70.00th=[ 52691], 80.00th=[ 74974], 90.00th=[ 94897], 95.00th=[131597], | 99.00th=[200279], 99.50th=[221250], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 31, max= 446, per=26.17%, avg=194.16, stdev=83.66, samples=64 iops : min= 1, max= 27, avg=11.38, stdev= 5.28, samples=64 lat (usec) : 50=0.52%, 100=9.24%, 250=1.04%, 500=0.52%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=0.91%, 4=4.04%, 10=9.90%, 20=8.98%, 50=30.08% lat (msec) : 100=27.08%, 250=7.42% cpu : usr=0.07%, sys=5.87%, ctx=1604, 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=144460: Sat Aug 15 13:02:57 2026 read: IOPS=10, BW=169KiB/s (173kB/s)(5744KiB/33922msec) clat (usec): min=39, max=239988, avg=46761.10, stdev=38200.03 lat (usec): min=39, max=239989, avg=46766.93, stdev=38201.87 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 61], 10.00th=[ 73], 20.00th=[ 117], | 30.00th=[ 25297], 40.00th=[ 35390], 50.00th=[ 45351], 60.00th=[ 55837], | 70.00th=[ 63177], 80.00th=[ 73925], 90.00th=[ 91751], 95.00th=[113771], | 99.00th=[152044], 99.50th=[181404], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 24, max= 446, per=24.60%, avg=173.70, stdev=82.57, samples=64 iops : min= 1, max= 27, avg=10.09, stdev= 5.19, samples=64 write: IOPS=12, BW=193KiB/s (198kB/s)(6544KiB/33922msec); 0 zone resets clat (usec): min=1512, max=337726, avg=41337.28, stdev=48516.30 lat (usec): min=1513, max=337729, avg=41345.25, stdev=48512.65 clat percentiles (usec): | 1.00th=[ 1860], 5.00th=[ 2933], 10.00th=[ 4621], 20.00th=[ 7767], | 30.00th=[ 10421], 40.00th=[ 15008], 50.00th=[ 21890], 60.00th=[ 34341], | 70.00th=[ 47449], 80.00th=[ 67634], 90.00th=[101188], 95.00th=[135267], | 99.00th=[227541], 99.50th=[278922], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 31, max= 494, per=25.82%, avg=191.58, stdev=94.97, samples=66 iops : min= 1, max= 30, avg=11.23, stdev= 5.98, samples=66 lat (usec) : 50=1.17%, 100=7.42%, 250=1.30%, 750=0.13%, 1000=0.13% lat (msec) : 2=1.56%, 4=3.26%, 10=11.20%, 20=11.72%, 50=25.13% lat (msec) : 100=28.39%, 250=8.07%, 500=0.52% cpu : usr=0.08%, sys=5.70%, ctx=1557, 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=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=144462: Sat Aug 15 13:02:57 2026 read: IOPS=12, BW=192KiB/s (197kB/s)(6256KiB/32565msec) clat (usec): min=37, max=207041, avg=43368.04, stdev=35218.24 lat (usec): min=38, max=207043, avg=43370.22, stdev=35217.23 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 62], 10.00th=[ 70], 20.00th=[ 133], | 30.00th=[ 26346], 40.00th=[ 34866], 50.00th=[ 41681], 60.00th=[ 47973], | 70.00th=[ 58459], 80.00th=[ 70779], 90.00th=[ 85459], 95.00th=[102237], | 99.00th=[149947], 99.50th=[196084], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 49, max= 442, per=27.48%, avg=194.00, stdev=81.12, samples=63 iops : min= 3, max= 27, avg=11.38, stdev= 5.08, samples=63 write: IOPS=11, BW=185KiB/s (190kB/s)(6032KiB/32565msec); 0 zone resets clat (usec): min=1576, max=247615, avg=40400.24, stdev=41174.05 lat (usec): min=1578, max=247617, avg=40402.84, stdev=41173.87 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2573], 10.00th=[ 4178], 20.00th=[ 7308], | 30.00th=[ 11207], 40.00th=[ 18482], 50.00th=[ 25297], 60.00th=[ 39060], | 70.00th=[ 53216], 80.00th=[ 67634], 90.00th=[ 92799], 95.00th=[124257], | 99.00th=[179307], 99.50th=[233833], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 31, max= 412, per=24.75%, avg=183.65, stdev=84.63, samples=63 iops : min= 1, max= 25, avg=10.71, stdev= 5.29, samples=63 lat (usec) : 50=0.78%, 100=8.07%, 250=2.21%, 500=0.26%, 750=0.13% lat (msec) : 2=1.95%, 4=3.26%, 10=9.11%, 20=8.07%, 50=31.25% lat (msec) : 100=27.99%, 250=6.90% cpu : usr=0.07%, sys=5.41%, ctx=1607, 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=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=144464: Sat Aug 15 13:02:57 2026 read: IOPS=11, BW=190KiB/s (195kB/s)(6032KiB/31750msec) clat (usec): min=34, max=223262, avg=42699.03, stdev=38053.21 lat (usec): min=34, max=223264, avg=42710.20, stdev=38042.56 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 62], 10.00th=[ 73], 20.00th=[ 111], | 30.00th=[ 22414], 40.00th=[ 31589], 50.00th=[ 38011], 60.00th=[ 47449], | 70.00th=[ 56886], 80.00th=[ 67634], 90.00th=[ 93848], 95.00th=[109577], | 99.00th=[170918], 99.50th=[185598], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 31, max= 410, per=27.14%, avg=191.57, stdev=91.44, samples=61 iops : min= 1, max= 25, avg=11.20, stdev= 5.75, samples=61 write: IOPS=12, BW=197KiB/s (202kB/s)(6256KiB/31750msec); 0 zone resets clat (usec): min=1513, max=212196, avg=39098.64, stdev=41944.38 lat (usec): min=1514, max=212199, avg=39110.62, stdev=41938.94 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2245], 10.00th=[ 3261], 20.00th=[ 7439], | 30.00th=[ 10683], 40.00th=[ 16057], 50.00th=[ 24249], 60.00th=[ 32637], | 70.00th=[ 49021], 80.00th=[ 67634], 90.00th=[ 94897], 95.00th=[128451], | 99.00th=[208667], 99.50th=[210764], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 50, max= 352, per=26.58%, avg=197.21, stdev=76.59, samples=62 iops : min= 3, max= 22, avg=11.56, stdev= 4.82, samples=62 lat (usec) : 50=1.30%, 100=7.68%, 250=1.43%, 500=0.78%, 750=0.39% lat (usec) : 1000=0.26% lat (msec) : 2=1.95%, 4=4.69%, 10=8.85%, 20=10.03%, 50=29.82% lat (msec) : 100=24.74%, 250=8.07% cpu : usr=0.06%, sys=5.70%, ctx=1575, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=706KiB/s (723kB/s), 169KiB/s-192KiB/s (173kB/s-197kB/s), io=23.4MiB (24.5MB), run=31750-33922msec WRITE: bw=743KiB/s (761kB/s), 185KiB/s-197KiB/s (190kB/s-202kB/s), io=24.6MiB (25.8MB), run=31750-33922msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144461: Sat Aug 15 13:03:42 2026 read: IOPS=4, BW=75.6KiB/s (77.5kB/s)(5920KiB/78263msec) clat (msec): min=7, max=262, avg=49.10, stdev=41.69 lat (msec): min=7, max=262, avg=49.10, stdev=41.69 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 53], 80.00th=[ 72], 90.00th=[ 103], 95.00th=[ 125], | 99.00th=[ 222], 99.50th=[ 241], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 30, max= 285, per=28.18%, avg=85.10, stdev=50.81, samples=136 iops : min= 1, max= 17, avg= 4.51, stdev= 3.20, samples=136 write: IOPS=5, BW=81.4KiB/s (83.3kB/s)(6368KiB/78263msec); 0 zone resets clat (msec): min=47, max=614, avg=150.30, stdev=72.25 lat (msec): min=47, max=614, avg=150.30, stdev=72.25 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 68], 10.00th=[ 79], 20.00th=[ 93], | 30.00th=[ 106], 40.00th=[ 120], 50.00th=[ 136], 60.00th=[ 153], | 70.00th=[ 163], 80.00th=[ 201], 90.00th=[ 251], 95.00th=[ 296], | 99.00th=[ 355], 99.50th=[ 426], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 30, max= 191, per=26.12%, avg=83.07, stdev=36.01, samples=150 iops : min= 1, max= 11, avg= 4.39, stdev= 2.29, samples=150 lat (msec) : 10=0.78%, 20=8.46%, 50=24.09%, 100=22.40%, 250=38.93% lat (msec) : 500=5.21%, 750=0.13% cpu : usr=0.03%, sys=1.43%, ctx=1372, 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=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=144463: Sat Aug 15 13:03:42 2026 read: IOPS=4, BW=72.5KiB/s (74.2kB/s)(5744KiB/79227msec) clat (msec): min=7, max=377, avg=48.04, stdev=45.80 lat (msec): min=7, max=377, avg=48.04, stdev=45.80 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 49], 80.00th=[ 62], 90.00th=[ 99], 95.00th=[ 150], | 99.00th=[ 236], 99.50th=[ 317], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 25, max= 288, per=27.86%, avg=84.13, stdev=54.50, samples=133 iops : min= 1, max= 18, avg= 4.47, stdev= 3.43, samples=133 write: IOPS=5, BW=82.6KiB/s (84.6kB/s)(6544KiB/79227msec); 0 zone resets clat (msec): min=45, max=450, avg=151.35, stdev=69.67 lat (msec): min=45, max=450, avg=151.36, stdev=69.67 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 68], 10.00th=[ 78], 20.00th=[ 94], | 30.00th=[ 109], 40.00th=[ 122], 50.00th=[ 136], 60.00th=[ 153], | 70.00th=[ 171], 80.00th=[ 205], 90.00th=[ 253], 95.00th=[ 296], | 99.00th=[ 359], 99.50th=[ 388], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 30, max= 223, per=26.45%, avg=84.12, stdev=37.54, samples=152 iops : min= 1, max= 13, avg= 4.45, stdev= 2.40, samples=152 lat (msec) : 10=0.91%, 20=7.68%, 50=25.52%, 100=21.48%, 250=38.15% lat (msec) : 500=6.25% cpu : usr=0.03%, sys=1.44%, ctx=1333, 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=144465: Sat Aug 15 13:03:42 2026 read: IOPS=5, BW=80.0KiB/s (82.9kB/s)(6256KiB/77280msec) clat (msec): min=10, max=292, avg=49.93, stdev=42.69 lat (msec): min=10, max=292, avg=49.93, stdev=42.69 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 52], 80.00th=[ 70], 90.00th=[ 102], 95.00th=[ 136], | 99.00th=[ 241], 99.50th=[ 279], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 30, max= 317, per=29.98%, avg=90.55, stdev=57.50, samples=136 iops : min= 1, max= 19, avg= 4.88, stdev= 3.64, samples=136 write: IOPS=4, BW=78.1KiB/s (79.9kB/s)(6032KiB/77280msec); 0 zone resets clat (msec): min=48, max=479, avg=152.23, stdev=68.95 lat (msec): min=48, max=479, avg=152.24, stdev=68.95 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 68], 10.00th=[ 80], 20.00th=[ 99], | 30.00th=[ 111], 40.00th=[ 122], 50.00th=[ 136], 60.00th=[ 153], | 70.00th=[ 174], 80.00th=[ 205], 90.00th=[ 241], 95.00th=[ 284], | 99.00th=[ 393], 99.50th=[ 409], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 30, max= 159, per=24.65%, avg=78.37, stdev=33.11, samples=150 iops : min= 1, max= 9, avg= 4.09, stdev= 2.12, samples=150 lat (msec) : 20=8.72%, 50=26.56%, 100=20.70%, 250=39.32%, 500=4.69% cpu : usr=0.04%, sys=1.49%, ctx=1397, 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=144466: Sat Aug 15 13:03:42 2026 read: IOPS=4, BW=76.8KiB/s (78.6kB/s)(6032KiB/78535msec) clat (msec): min=8, max=317, avg=49.42, stdev=45.13 lat (msec): min=8, max=317, avg=49.43, stdev=45.13 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 52], 80.00th=[ 69], 90.00th=[ 107], 95.00th=[ 155], | 99.00th=[ 226], 99.50th=[ 271], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 31, max= 254, per=30.19%, avg=91.19, stdev=54.25, samples=129 iops : min= 1, max= 15, avg= 4.90, stdev= 3.44, samples=129 write: IOPS=4, BW=79.7KiB/s (81.6kB/s)(6256KiB/78535msec); 0 zone resets clat (msec): min=53, max=465, avg=152.89, stdev=67.28 lat (msec): min=53, max=465, avg=152.89, stdev=67.28 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 71], 10.00th=[ 83], 20.00th=[ 97], | 30.00th=[ 112], 40.00th=[ 125], 50.00th=[ 138], 60.00th=[ 157], | 70.00th=[ 174], 80.00th=[ 201], 90.00th=[ 245], 95.00th=[ 284], | 99.00th=[ 393], 99.50th=[ 414], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 28, max= 159, per=25.08%, avg=79.76, stdev=33.53, samples=154 iops : min= 1, max= 9, avg= 4.19, stdev= 2.15, samples=154 lat (msec) : 10=0.52%, 20=9.77%, 50=23.31%, 100=21.88%, 250=39.58% lat (msec) : 500=4.95% cpu : usr=0.04%, sys=1.38%, ctx=1334, 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=302KiB/s (310kB/s), 72.5KiB/s-80.0KiB/s (74.2kB/s-82.9kB/s), io=23.4MiB (24.5MB), run=77280-79227msec WRITE: bw=318KiB/s (326kB/s), 78.1KiB/s-82.6KiB/s (79.9kB/s-84.6kB/s), io=24.6MiB (25.8MB), run=77280-79227msec 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=144482: Sat Aug 15 13:03:57 2026 read: IOPS=1, BW=1971KiB/s (2019kB/s)(7168KiB/3636msec) clat (usec): min=563, max=511502, avg=269186.56, stdev=167722.75 lat (usec): min=565, max=511503, avg=269188.09, stdev=167722.54 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[181404], | 30.00th=[223347], 40.00th=[223347], 50.00th=[246416], 60.00th=[287310], | 70.00th=[287310], 80.00th=[434111], 90.00th=[509608], 95.00th=[509608], | 99.00th=[509608], 99.50th=[509608], 99.90th=[509608], 99.95th=[509608], | 99.99th=[509608] bw ( KiB/s): min= 1700, max= 2913, per=53.52%, avg=2118.20, stdev=463.62, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=1, BW=1408KiB/s (1442kB/s)(5120KiB/3636msec); 0 zone resets clat (msec): min=260, max=542, avg=337.88, stdev=116.40 lat (msec): min=260, max=542, avg=338.02, stdev=116.38 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 317], 80.00th=[ 317], 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= 1700, max= 4007, per=45.97%, avg=2547.33, stdev=1269.56, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=18.16%, ctx=379, 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=144483: Sat Aug 15 13:03:57 2026 read: IOPS=0, BW=396KiB/s (405kB/s)(2048KiB/5174msec) clat (usec): min=854, max=251320, avg=126087.94, stdev=177106.28 lat (usec): min=855, max=251324, avg=126090.14, stdev=177108.05 clat percentiles (usec): | 1.00th=[ 857], 5.00th=[ 857], 10.00th=[ 857], 20.00th=[ 857], | 30.00th=[ 857], 40.00th=[ 857], 50.00th=[ 857], 60.00th=[250610], | 70.00th=[250610], 80.00th=[250610], 90.00th=[250610], 95.00th=[250610], | 99.00th=[250610], 99.50th=[250610], 99.90th=[250610], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 1458, max= 2035, per=44.13%, avg=1746.50, stdev=408.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1979KiB/s (2027kB/s)(10.0MiB/5174msec); 0 zone resets clat (msec): min=140, max=1220, avg=480.89, stdev=335.57 lat (msec): min=140, max=1221, avg=481.36, stdev=336.02 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 213], | 30.00th=[ 292], 40.00th=[ 305], 50.00th=[ 321], 60.00th=[ 414], | 70.00th=[ 430], 80.00th=[ 584], 90.00th=[ 894], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 1700, max= 6047, per=53.67%, avg=2974.00, stdev=1736.29, samples=6 iops : min= 1, max= 5, avg= 2.17, stdev= 1.60, samples=6 lat (usec) : 1000=8.33% lat (msec) : 250=16.67%, 500=50.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=15.31%, ctx=217, 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=144484: Sat Aug 15 13:03:57 2026 read: IOPS=1, BW=1547KiB/s (1584kB/s)(6144KiB/3971msec) clat (usec): min=972, max=388524, avg=180674.18, stdev=152331.52 lat (usec): min=973, max=388525, avg=180675.42, stdev=152331.76 clat percentiles (usec): | 1.00th=[ 971], 5.00th=[ 971], 10.00th=[ 971], 20.00th=[ 1020], | 30.00th=[ 1020], 40.00th=[210764], 50.00th=[210764], 60.00th=[238027], | 70.00th=[244319], 80.00th=[244319], 90.00th=[387974], 95.00th=[387974], | 99.00th=[387974], 99.50th=[387974], 99.90th=[387974], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 3871, max= 6000, per=100.00%, avg=4935.50, stdev=1505.43, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=1, BW=1547KiB/s (1584kB/s)(6144KiB/3971msec); 0 zone resets clat (msec): min=319, max=746, avg=464.63, stdev=151.50 lat (msec): min=319, max=746, avg=464.71, stdev=151.52 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 447], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 2000, max= 3401, per=41.44%, avg=2296.40, stdev=617.78, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=18.74%, ctx=277, 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=144485: Sat Aug 15 13:03:57 2026 read: IOPS=1, BW=1310KiB/s (1341kB/s)(5120KiB/3909msec) clat (usec): min=1063, max=607442, avg=233416.61, stdev=253817.22 lat (usec): min=1065, max=607443, avg=233418.03, stdev=253817.11 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1057], 10.00th=[ 1057], 20.00th=[ 1057], | 30.00th=[ 1319], 40.00th=[ 1319], 50.00th=[225444], 60.00th=[225444], | 70.00th=[333448], 80.00th=[333448], 90.00th=[608175], 95.00th=[608175], | 99.00th=[608175], 99.50th=[608175], 99.90th=[608175], 99.95th=[608175], | 99.99th=[608175] bw ( KiB/s): min= 1935, max= 6011, per=100.00%, avg=3973.00, stdev=2882.17, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1834KiB/s (1878kB/s)(7168KiB/3909msec); 0 zone resets clat (msec): min=80, max=595, avg=377.51, stdev=184.83 lat (msec): min=80, max=597, avg=377.84, stdev=185.14 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 271], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 326], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 575], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 1700, max= 6131, per=62.72%, avg=3475.50, stdev=2060.40, samples=4 iops : min= 1, max= 5, avg= 2.50, stdev= 1.91, samples=4 lat (msec) : 2=16.67%, 100=8.33%, 250=8.33%, 500=41.67%, 750=25.00% cpu : usr=0.05%, sys=19.37%, ctx=295, 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=3958KiB/s (4053kB/s), 396KiB/s-1971KiB/s (405kB/s-2019kB/s), io=20.0MiB (20.0MB), run=3636-5174msec WRITE: bw=5542KiB/s (5675kB/s), 1408KiB/s-1979KiB/s (1442kB/s-2027kB/s), io=28.0MiB (29.4MB), run=3636-5174msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144487: Sat Aug 15 13:03:58 2026 read: IOPS=1, BW=1840KiB/s (1884kB/s)(7168KiB/3895msec) clat (msec): min=76, max=846, avg=337.54, stdev=275.32 lat (msec): min=76, max=846, avg=337.54, stdev=275.32 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 136], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 211], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 506], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1723, max= 4055, per=62.13%, avg=2378.20, stdev=947.23, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1315KiB/s (1346kB/s)(5120KiB/3895msec); 0 zone resets clat (msec): min=165, max=479, avg=279.05, stdev=123.63 lat (msec): min=165, max=479, avg=279.23, stdev=123.71 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 188], 40.00th=[ 188], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 284], 80.00th=[ 284], 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= 1875, max= 4055, per=49.59%, avg=2657.67, stdev=1213.04, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=7.22%, ctx=130, 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=144488: Sat Aug 15 13:03:58 2026 read: IOPS=0, BW=389KiB/s (398kB/s)(2048KiB/5263msec) clat (msec): min=139, max=234, avg=186.85, stdev=66.94 lat (msec): min=139, max=234, avg=186.86, stdev=66.94 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 140], 60.00th=[ 234], | 70.00th=[ 234], 80.00th=[ 234], 90.00th=[ 234], 95.00th=[ 234], | 99.00th=[ 234], 99.50th=[ 234], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 1675, max= 2048, per=48.63%, avg=1861.50, stdev=263.75, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1946KiB/s (1992kB/s)(10.0MiB/5263msec); 0 zone resets clat (msec): min=163, max=1160, avg=476.39, stdev=371.89 lat (msec): min=163, max=1160, avg=476.88, stdev=372.58 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 199], | 30.00th=[ 209], 40.00th=[ 268], 50.00th=[ 292], 60.00th=[ 321], | 70.00th=[ 401], 80.00th=[ 651], 90.00th=[ 1099], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 2027, max= 4087, per=48.82%, avg=2616.29, stdev=988.42, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (msec) : 250=41.67%, 500=33.33%, 750=8.33%, 2000=16.67% cpu : usr=0.02%, sys=7.30%, ctx=148, 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=144489: Sat Aug 15 13:03:58 2026 read: IOPS=1, BW=1287KiB/s (1318kB/s)(6144KiB/4773msec) clat (msec): min=78, max=386, avg=216.96, stdev=124.56 lat (msec): min=78, max=386, avg=216.96, stdev=124.56 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 82], | 30.00th=[ 82], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 239], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 1875, max= 4096, per=65.58%, avg=2510.25, stdev=1059.87, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1287KiB/s (1318kB/s)(6144KiB/4773msec); 0 zone resets clat (msec): min=313, max=977, avg=566.36, stdev=234.18 lat (msec): min=315, max=977, avg=566.69, stdev=233.90 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 523], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 2027, max= 2043, per=38.02%, avg=2037.40, stdev= 7.80, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=16.67%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=5.30%, ctx=112, 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=144490: Sat Aug 15 13:03:58 2026 read: IOPS=0, BW=957KiB/s (980kB/s)(5120KiB/5350msec) clat (msec): min=101, max=692, avg=352.12, stdev=253.76 lat (msec): min=101, max=692, avg=352.12, stdev=253.76 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 150], 40.00th=[ 150], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 535], 80.00th=[ 535], 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= 1875, max= 2048, per=52.20%, avg=1998.25, stdev=82.65, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 write: IOPS=1, BW=1340KiB/s (1372kB/s)(7168KiB/5350msec); 0 zone resets clat (msec): min=177, max=988, avg=503.67, stdev=291.11 lat (msec): min=177, max=988, avg=503.80, stdev=291.11 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 239], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 464], 60.00th=[ 609], | 70.00th=[ 609], 80.00th=[ 726], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 2031, max= 4055, per=56.76%, avg=3042.00, stdev=1160.50, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 250=33.33%, 500=25.00%, 750=33.33%, 1000=8.33% cpu : usr=0.00%, sys=5.33%, ctx=111, 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=3828KiB/s (3920kB/s), 389KiB/s-1840KiB/s (398kB/s-1884kB/s), io=20.0MiB (20.0MB), run=3895-5350msec WRITE: bw=5359KiB/s (5488kB/s), 1287KiB/s-1946KiB/s (1318kB/s-1992kB/s), io=28.0MiB (29.4MB), run=3895-5350msec 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=144497: Sat Aug 15 13:04:10 2026 read: IOPS=1, BW=5283KiB/s (5410kB/s)(12.0MiB/2326msec) clat (msec): min=609, max=931, avg=765.80, stdev=161.56 lat (msec): min=609, max=931, avg=765.80, stdev=161.55 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 5634, max= 8192, per=100.00%, avg=6913.00, stdev=1808.78, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=18.67%, ctx=291, 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=144498: Sat Aug 15 13:04:10 2026 read: IOPS=0, BW=1455KiB/s (1490kB/s)(4096KiB/2815msec) clat (nsec): min=553659k, max=553659k, avg=553658757.00, stdev= 0.00 lat (nsec): min=553661k, max=553661k, avg=553660883.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 5720, max= 5720, per=98.28%, avg=5720.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2910KiB/s (2980kB/s)(8192KiB/2815msec); 0 zone resets clat (msec): min=850, max=1343, avg=1096.86, stdev=348.64 lat (msec): min=850, max=1344, avg=1097.80, stdev=349.52 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=[ 1351], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 8192, max= 8192, per=71.06%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.20%, ctx=120, 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=144499: Sat Aug 15 13:04:10 2026 write: IOPS=1, BW=4324KiB/s (4427kB/s)(12.0MiB/2842msec); 0 zone resets clat (msec): min=827, max=1151, avg=936.58, stdev=185.96 lat (msec): min=828, max=1151, avg=937.18, stdev=185.72 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 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= 7892, max= 8192, per=69.75%, avg=8042.00, stdev=212.13, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.83%, ctx=60, 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=144500: Sat Aug 15 13:04:10 2026 write: IOPS=1, BW=5968KiB/s (6111kB/s)(12.0MiB/2059msec); 0 zone resets clat (msec): min=491, max=976, avg=675.99, stdev=262.47 lat (msec): min=493, max=976, avg=677.14, stdev=261.66 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 493], 10.00th=[ 493], 20.00th=[ 493], | 30.00th=[ 493], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 6224, max= 7892, per=61.22%, avg=7058.00, stdev=1179.45, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=4.76%, ctx=33, 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=5820KiB/s (5960kB/s), 1455KiB/s-5283KiB/s (1490kB/s-5410kB/s), io=16.0MiB (16.8MB), run=2326-2815msec WRITE: bw=11.3MiB/s (11.8MB/s), 2910KiB/s-5968KiB/s (2980kB/s-6111kB/s), io=32.0MiB (33.6MB), run=2059-2842msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144502: Sat Aug 15 13:04:10 2026 read: IOPS=0, BW=3921KiB/s (4015kB/s)(12.0MiB/3134msec) clat (msec): min=503, max=1398, avg=1043.31, stdev=475.40 lat (msec): min=503, max=1398, avg=1043.31, stdev=475.40 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.51%, ctx=29, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144503: Sat Aug 15 13:04:10 2026 read: IOPS=0, BW=1373KiB/s (1406kB/s)(4096KiB/2984msec) clat (nsec): min=1190.6M, max=1190.6M, avg=1190603465.00, stdev= 0.00 lat (nsec): min=1190.6M, max=1190.6M, avg=1190606242.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2745KiB/s (2811kB/s)(8192KiB/2984msec); 0 zone resets clat (msec): min=819, max=968, avg=894.21, stdev=105.24 lat (msec): min=820, max=969, avg=894.68, stdev=105.22 clat percentiles (msec): | 1.00th=[ 818], 5.00th=[ 818], 10.00th=[ 818], 20.00th=[ 818], | 30.00th=[ 818], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 969], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 8126, max= 8126, per=74.00%, avg=8126.00, 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=4.93%, ctx=54, 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=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=144504: Sat Aug 15 13:04:10 2026 write: IOPS=1, BW=4163KiB/s (4263kB/s)(12.0MiB/2952msec); 0 zone resets clat (msec): min=774, max=1116, avg=981.67, stdev=182.22 lat (msec): min=778, max=1118, avg=983.55, stdev=180.76 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 1053], 50.00th=[ 1053], 60.00th=[ 1053], | 70.00th=[ 1116], 80.00th=[ 1116], 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= 8000, max= 8126, per=73.43%, avg=8063.00, stdev=89.10, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.56%, ctx=43, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144505: Sat Aug 15 13:04:10 2026 write: IOPS=1, BW=5573KiB/s (5707kB/s)(12.0MiB/2205msec); 0 zone resets clat (msec): min=328, max=1254, avg=729.10, stdev=475.37 lat (msec): min=328, max=1254, avg=729.60, stdev=475.53 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 5962, max= 8175, per=64.37%, avg=7068.50, stdev=1564.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.81%, ctx=55, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5228KiB/s (5353kB/s), 1373KiB/s-3921KiB/s (1406kB/s-4015kB/s), io=16.0MiB (16.8MB), run=2984-3134msec WRITE: bw=10.7MiB/s (11.2MB/s), 2745KiB/s-5573KiB/s (2811kB/s-5707kB/s), io=32.0MiB (33.6MB), run=2205-2984msec