== sanity test 398b: DIO and buffer IO race ============== 10:46:25 (1785941185) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 9.82428 s, 5.1 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=178206: Wed Aug 5 10:49:18 2026 read: IOPS=10, BW=41.2KiB/s (42.1kB/s)(5992KiB/145575msec) clat (usec): min=29, max=1156.2k, avg=54055.94, stdev=43901.66 lat (usec): min=30, max=1156.2k, avg=54059.15, stdev=43900.79 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 12649], 10.00th=[ 20317], | 20.00th=[ 28181], 30.00th=[ 33817], 40.00th=[ 40109], | 50.00th=[ 47449], 60.00th=[ 55313], 70.00th=[ 64750], | 80.00th=[ 74974], 90.00th=[ 91751], 95.00th=[ 109577], | 99.00th=[ 181404], 99.50th=[ 202376], 99.90th=[ 346031], | 99.95th=[1149240], 99.99th=[1149240] bw ( KiB/s): min= 7, max= 102, per=25.04%, avg=40.82, stdev=16.02, samples=284 iops : min= 1, max= 25, avg= 9.54, stdev= 4.05, samples=284 write: IOPS=10, BW=43.2KiB/s (44.3kB/s)(6296KiB/145575msec); 0 zone resets clat (usec): min=767, max=352186, avg=40702.69, stdev=42777.95 lat (usec): min=768, max=352188, avg=40706.61, stdev=42776.56 clat percentiles (usec): | 1.00th=[ 922], 5.00th=[ 1037], 10.00th=[ 1123], 20.00th=[ 3228], | 30.00th=[ 7832], 40.00th=[ 20317], 50.00th=[ 30802], 60.00th=[ 40109], | 70.00th=[ 52167], 80.00th=[ 67634], 90.00th=[ 96994], 95.00th=[129500], | 99.00th=[183501], 99.50th=[204473], 99.90th=[320865], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 7, max= 117, per=25.09%, avg=42.91, stdev=18.54, samples=284 iops : min= 1, max= 29, avg=10.07, stdev= 4.68, samples=284 lat (usec) : 50=0.88%, 100=0.81%, 250=0.07%, 750=0.03%, 1000=1.69% lat (msec) : 2=6.64%, 4=3.39%, 10=4.98%, 20=6.45%, 50=35.51% lat (msec) : 100=31.28%, 250=8.07%, 500=0.16%, 2000=0.03% cpu : usr=0.04%, sys=3.23%, ctx=5899, 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=178207: Wed Aug 5 10:49:18 2026 read: IOPS=10, BW=41.2KiB/s (42.2kB/s)(5940KiB/144115msec) clat (usec): min=35, max=1169.8k, avg=53783.15, stdev=43831.47 lat (usec): min=35, max=1169.9k, avg=53796.36, stdev=43828.44 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 12780], 10.00th=[ 19268], | 20.00th=[ 27395], 30.00th=[ 33817], 40.00th=[ 40109], | 50.00th=[ 46400], 60.00th=[ 54789], 70.00th=[ 64750], | 80.00th=[ 76022], 90.00th=[ 93848], 95.00th=[ 115868], | 99.00th=[ 173016], 99.50th=[ 196084], 99.90th=[ 217056], | 99.95th=[1166017], 99.99th=[1166017] bw ( KiB/s): min= 7, max= 103, per=25.32%, avg=41.27, stdev=16.81, samples=280 iops : min= 1, max= 25, avg= 9.65, stdev= 4.24, samples=280 write: IOPS=11, BW=44.0KiB/s (45.1kB/s)(6348KiB/144115msec); 0 zone resets clat (usec): min=787, max=361284, avg=40138.26, stdev=44162.32 lat (usec): min=787, max=361285, avg=40140.99, stdev=44161.14 clat percentiles (usec): | 1.00th=[ 938], 5.00th=[ 1029], 10.00th=[ 1123], 20.00th=[ 3032], | 30.00th=[ 6325], 40.00th=[ 15795], 50.00th=[ 27657], 60.00th=[ 39060], | 70.00th=[ 51643], 80.00th=[ 71828], 90.00th=[100140], 95.00th=[125305], | 99.00th=[189793], 99.50th=[217056], 99.90th=[295699], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 7, max= 111, per=25.79%, avg=44.10, stdev=21.66, samples=280 iops : min= 1, max= 27, avg=10.36, stdev= 5.47, samples=280 lat (usec) : 50=0.78%, 100=0.98%, 250=0.13%, 1000=1.66% lat (msec) : 2=6.90%, 4=3.52%, 10=6.18%, 20=7.55%, 50=34.28% lat (msec) : 100=29.17%, 250=8.72%, 500=0.10%, 2000=0.03% cpu : usr=0.04%, sys=3.24%, ctx=5722, 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=178208: Wed Aug 5 10:49:18 2026 read: IOPS=10, BW=41.1KiB/s (42.1kB/s)(6028KiB/146679msec) clat (usec): min=21, max=337862, avg=53616.17, stdev=36673.05 lat (usec): min=21, max=337863, avg=53617.68, stdev=36673.23 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 9503], 10.00th=[ 18744], 20.00th=[ 26608], | 30.00th=[ 32113], 40.00th=[ 38536], 50.00th=[ 45876], 60.00th=[ 53740], | 70.00th=[ 64750], 80.00th=[ 78119], 90.00th=[ 96994], 95.00th=[116917], | 99.00th=[187696], 99.50th=[206570], 99.90th=[333448], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 7, max= 104, per=25.22%, avg=41.10, stdev=17.75, samples=285 iops : min= 1, max= 26, avg= 9.60, stdev= 4.47, samples=285 write: IOPS=10, BW=42.7KiB/s (43.7kB/s)(6260KiB/146679msec); 0 zone resets clat (usec): min=800, max=1153.8k, avg=41785.16, stdev=52177.56 lat (usec): min=800, max=1153.8k, avg=41788.57, stdev=52176.79 clat percentiles (usec): | 1.00th=[ 947], 5.00th=[ 1045], 10.00th=[ 1123], | 20.00th=[ 2737], 30.00th=[ 6194], 40.00th=[ 16581], | 50.00th=[ 28705], 60.00th=[ 39584], 70.00th=[ 54789], | 80.00th=[ 72877], 90.00th=[ 105382], 95.00th=[ 128451], | 99.00th=[ 183501], 99.50th=[ 206570], 99.90th=[ 350225], | 99.95th=[1149240], 99.99th=[1149240] bw ( KiB/s): min= 7, max= 111, per=24.87%, avg=42.53, stdev=20.20, samples=286 iops : min= 1, max= 27, avg= 9.97, stdev= 5.09, samples=286 lat (usec) : 50=1.11%, 100=1.07%, 250=0.03%, 1000=1.66% lat (msec) : 2=6.77%, 4=4.36%, 10=5.08%, 20=7.36%, 50=33.50% lat (msec) : 100=29.04%, 250=9.77%, 500=0.23%, 2000=0.03% cpu : usr=0.04%, sys=3.21%, ctx=5756, 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=178209: Wed Aug 5 10:49:18 2026 read: IOPS=10, BW=41.2KiB/s (42.2kB/s)(6052KiB/146874msec) clat (usec): min=31, max=349225, avg=52857.06, stdev=33825.90 lat (usec): min=32, max=349227, avg=52858.10, stdev=33825.90 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 627], 10.00th=[ 19006], 20.00th=[ 27395], | 30.00th=[ 33162], 40.00th=[ 40109], 50.00th=[ 46924], 60.00th=[ 54789], | 70.00th=[ 65274], 80.00th=[ 74974], 90.00th=[ 92799], 95.00th=[110625], | 99.00th=[156238], 99.50th=[189793], 99.90th=[287310], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 7, max= 101, per=25.23%, avg=41.12, stdev=16.75, samples=285 iops : min= 1, max= 25, avg= 9.61, stdev= 4.22, samples=285 write: IOPS=10, BW=42.5KiB/s (43.5kB/s)(6236KiB/146874msec); 0 zone resets clat (usec): min=807, max=1170.2k, avg=42595.14, stdev=53005.43 lat (usec): min=808, max=1170.2k, avg=42597.55, stdev=53006.31 clat percentiles (usec): | 1.00th=[ 922], 5.00th=[ 1045], 10.00th=[ 1139], | 20.00th=[ 3326], 30.00th=[ 6849], 40.00th=[ 19006], | 50.00th=[ 30278], 60.00th=[ 39584], 70.00th=[ 53216], | 80.00th=[ 72877], 90.00th=[ 106431], 95.00th=[ 135267], | 99.00th=[ 191890], 99.50th=[ 225444], 99.90th=[ 295699], | 99.95th=[1166017], 99.99th=[1166017] bw ( KiB/s): min= 7, max= 110, per=24.66%, avg=42.17, stdev=19.45, samples=286 iops : min= 1, max= 27, avg= 9.87, stdev= 4.90, samples=286 lat (usec) : 50=1.17%, 100=1.14%, 250=0.13%, 750=0.03%, 1000=1.50% lat (msec) : 2=5.99%, 4=4.07%, 10=5.76%, 20=6.35%, 50=34.83% lat (msec) : 100=29.56%, 250=9.31%, 500=0.13%, 2000=0.03% cpu : usr=0.04%, sys=3.13%, ctx=5842, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=163KiB/s (167kB/s), 41.1KiB/s-41.2KiB/s (42.1kB/s-42.2kB/s), io=23.4MiB (24.6MB), run=144115-146874msec WRITE: bw=171KiB/s (175kB/s), 42.5KiB/s-44.0KiB/s (43.5kB/s-45.1kB/s), io=24.6MiB (25.7MB), run=144115-146874msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178211: Wed Aug 5 10:50:04 2026 read: IOPS=7, BW=31.5KiB/s (32.2kB/s)(5992KiB/190447msec) clat (msec): min=5, max=1178, avg=50.14, stdev=50.96 lat (msec): min=5, max=1178, avg=50.14, stdev=50.96 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 55], 80.00th=[ 72], 90.00th=[ 104], 95.00th=[ 142], | 99.00th=[ 209], 99.50th=[ 243], 99.90th=[ 305], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 119, per=26.11%, avg=32.37, stdev=21.00, samples=358 iops : min= 1, max= 29, avg= 7.42, stdev= 5.29, samples=358 write: IOPS=8, BW=33.1KiB/s (33.9kB/s)(6296KiB/190447msec); 0 zone resets clat (msec): min=10, max=382, avg=73.21, stdev=51.01 lat (msec): min=10, max=382, avg=73.21, stdev=51.01 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 68], | 70.00th=[ 86], 80.00th=[ 111], 90.00th=[ 144], 95.00th=[ 174], | 99.00th=[ 249], 99.50th=[ 284], 99.90th=[ 321], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 102, per=25.44%, avg=33.07, stdev=19.91, samples=368 iops : min= 1, max= 25, avg= 7.60, stdev= 5.00, samples=368 lat (msec) : 10=1.66%, 20=9.96%, 50=44.01%, 100=26.69%, 250=17.02% lat (msec) : 500=0.62%, 2000=0.03% cpu : usr=0.04%, sys=1.18%, ctx=4347, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178212: Wed Aug 5 10:50:04 2026 read: IOPS=7, BW=31.1KiB/s (31.9kB/s)(5940KiB/190735msec) clat (msec): min=4, max=1128, avg=51.22, stdev=54.49 lat (msec): min=4, max=1128, avg=51.22, stdev=54.49 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 36], 60.00th=[ 42], | 70.00th=[ 53], 80.00th=[ 72], 90.00th=[ 112], 95.00th=[ 150], | 99.00th=[ 224], 99.50th=[ 266], 99.90th=[ 443], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 110, per=26.28%, avg=32.59, stdev=21.07, samples=353 iops : min= 1, max= 27, avg= 7.48, stdev= 5.29, samples=353 write: IOPS=8, BW=33.3KiB/s (34.1kB/s)(6348KiB/190735msec); 0 zone resets clat (msec): min=10, max=392, avg=72.20, stdev=48.89 lat (msec): min=10, max=392, avg=72.21, stdev=48.89 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 56], 60.00th=[ 68], | 70.00th=[ 87], 80.00th=[ 109], 90.00th=[ 140], 95.00th=[ 167], | 99.00th=[ 236], 99.50th=[ 275], 99.90th=[ 330], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 7, max= 87, per=25.64%, avg=33.33, stdev=19.46, samples=368 iops : min= 1, max= 21, avg= 7.66, stdev= 4.89, samples=368 lat (msec) : 10=1.63%, 20=10.74%, 50=42.97%, 100=26.46%, 250=17.55% lat (msec) : 500=0.62%, 2000=0.03% cpu : usr=0.04%, sys=1.17%, ctx=4176, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178213: Wed Aug 5 10:50:04 2026 read: IOPS=7, BW=31.3KiB/s (32.1kB/s)(6028KiB/192492msec) clat (msec): min=4, max=306, avg=52.16, stdev=46.36 lat (msec): min=4, max=306, avg=52.16, stdev=46.36 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 44], | 70.00th=[ 58], 80.00th=[ 75], 90.00th=[ 117], 95.00th=[ 157], | 99.00th=[ 222], 99.50th=[ 253], 99.90th=[ 288], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 7, max= 127, per=25.76%, avg=31.94, stdev=21.11, samples=364 iops : min= 1, max= 31, avg= 7.32, stdev= 5.31, samples=364 write: IOPS=8, BW=32.5KiB/s (33.3kB/s)(6260KiB/192492msec); 0 zone resets clat (msec): min=8, max=1161, avg=72.71, stdev=57.88 lat (msec): min=8, max=1161, avg=72.71, stdev=57.88 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 54], 60.00th=[ 67], | 70.00th=[ 86], 80.00th=[ 107], 90.00th=[ 138], 95.00th=[ 171], | 99.00th=[ 262], 99.50th=[ 300], 99.90th=[ 430], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 101, per=25.05%, avg=32.57, stdev=20.29, samples=370 iops : min= 1, max= 25, avg= 7.47, stdev= 5.11, samples=370 lat (msec) : 10=1.79%, 20=9.90%, 50=43.29%, 100=26.92%, 250=17.25% lat (msec) : 500=0.81%, 2000=0.03% cpu : usr=0.04%, sys=1.21%, ctx=4590, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178214: Wed Aug 5 10:50:04 2026 read: IOPS=7, BW=31.5KiB/s (32.3kB/s)(6052KiB/191938msec) clat (msec): min=5, max=445, avg=51.35, stdev=47.01 lat (msec): min=5, max=445, avg=51.35, stdev=47.01 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 55], 80.00th=[ 74], 90.00th=[ 116], 95.00th=[ 153], | 99.00th=[ 232], 99.50th=[ 253], 99.90th=[ 305], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 112, per=26.04%, avg=32.29, stdev=22.12, samples=362 iops : min= 1, max= 28, avg= 7.40, stdev= 5.56, samples=362 write: IOPS=8, BW=32.5KiB/s (33.3kB/s)(6236KiB/191938msec); 0 zone resets clat (msec): min=11, max=1164, avg=73.22, stdev=58.97 lat (msec): min=11, max=1164, avg=73.22, stdev=58.97 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 67], | 70.00th=[ 84], 80.00th=[ 109], 90.00th=[ 144], 95.00th=[ 176], | 99.00th=[ 257], 99.50th=[ 300], 99.90th=[ 430], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 104, per=25.26%, avg=32.84, stdev=20.05, samples=366 iops : min= 1, max= 26, avg= 7.54, stdev= 5.05, samples=366 lat (msec) : 10=1.76%, 20=10.35%, 50=43.55%, 100=26.14%, 250=17.38% lat (msec) : 500=0.78%, 2000=0.03% cpu : usr=0.03%, sys=1.17%, ctx=4422, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=125KiB/s (128kB/s), 31.1KiB/s-31.5KiB/s (31.9kB/s-32.3kB/s), io=23.4MiB (24.6MB), run=190447-192492msec WRITE: bw=131KiB/s (134kB/s), 32.5KiB/s-33.3KiB/s (33.3kB/s-34.1kB/s), io=24.6MiB (25.7MB), run=190447-192492msec 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=178266: Wed Aug 5 10:50:55 2026 read: IOPS=9, BW=148KiB/s (152kB/s)(5920KiB/39910msec) clat (usec): min=35, max=243852, avg=56438.47, stdev=38395.55 lat (usec): min=35, max=243853, avg=56439.35, stdev=38395.59 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 53], 10.00th=[ 68], 20.00th=[ 27919], | 30.00th=[ 36963], 40.00th=[ 45351], 50.00th=[ 51643], 60.00th=[ 62129], | 70.00th=[ 70779], 80.00th=[ 82314], 90.00th=[100140], 95.00th=[131597], | 99.00th=[181404], 99.50th=[219153], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 31, max= 316, per=25.44%, avg=148.29, stdev=59.45, samples=78 iops : min= 1, max= 19, avg= 8.46, stdev= 3.78, samples=78 write: IOPS=9, BW=160KiB/s (163kB/s)(6368KiB/39910msec); 0 zone resets clat (usec): min=1223, max=219230, avg=47395.07, stdev=45212.94 lat (usec): min=1224, max=219232, avg=47399.40, stdev=45222.04 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1729], 10.00th=[ 3523], 20.00th=[ 6521], | 30.00th=[ 13042], 40.00th=[ 21365], 50.00th=[ 34866], 60.00th=[ 47973], | 70.00th=[ 66323], 80.00th=[ 83362], 90.00th=[113771], 95.00th=[137364], | 99.00th=[191890], 99.50th=[208667], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 318, per=26.05%, avg=159.67, stdev=70.08, samples=78 iops : min= 1, max= 19, avg= 9.17, stdev= 4.44, samples=78 lat (usec) : 50=1.43%, 100=3.52%, 250=0.78% lat (msec) : 2=3.26%, 4=2.86%, 10=7.94%, 20=6.90%, 50=27.47% lat (msec) : 100=33.72%, 250=12.11% cpu : usr=0.04%, sys=3.19%, ctx=1455, 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=178267: Wed Aug 5 10:50:55 2026 read: IOPS=8, BW=142KiB/s (146kB/s)(5744KiB/40355msec) clat (usec): min=41, max=279606, avg=63146.76, stdev=42047.70 lat (usec): min=41, max=279607, avg=63147.65, stdev=42047.69 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 58], 10.00th=[ 20579], 20.00th=[ 32113], | 30.00th=[ 40109], 40.00th=[ 49021], 50.00th=[ 56886], 60.00th=[ 66323], | 70.00th=[ 77071], 80.00th=[ 93848], 90.00th=[112722], 95.00th=[141558], | 99.00th=[208667], 99.50th=[270533], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 27, max= 284, per=24.35%, avg=141.99, stdev=53.48, samples=79 iops : min= 1, max= 17, avg= 8.05, stdev= 3.36, samples=79 write: IOPS=10, BW=162KiB/s (166kB/s)(6544KiB/40355msec); 0 zone resets clat (usec): min=1321, max=205306, avg=42292.16, stdev=42342.73 lat (usec): min=1322, max=205308, avg=42296.57, stdev=42342.55 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1663], 10.00th=[ 2311], 20.00th=[ 5735], | 30.00th=[ 9110], 40.00th=[ 18482], 50.00th=[ 29230], 60.00th=[ 40633], | 70.00th=[ 55313], 80.00th=[ 77071], 90.00th=[103285], 95.00th=[130548], | 99.00th=[175113], 99.50th=[187696], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 27, max= 408, per=26.44%, avg=162.10, stdev=81.83, samples=79 iops : min= 1, max= 25, avg= 9.32, stdev= 5.17, samples=79 lat (usec) : 50=0.52%, 100=3.26%, 750=0.13%, 1000=0.13% lat (msec) : 2=4.95%, 4=2.73%, 10=9.11%, 20=6.51%, 50=26.95% lat (msec) : 100=32.68%, 250=12.76%, 500=0.26% cpu : usr=0.02%, sys=3.57%, ctx=1550, 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=178268: Wed Aug 5 10:50:55 2026 read: IOPS=9, BW=152KiB/s (156kB/s)(6256KiB/41048msec) clat (usec): min=44, max=266072, avg=59702.83, stdev=40648.86 lat (usec): min=45, max=266073, avg=59713.78, stdev=40639.48 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 58], 10.00th=[ 13304], 20.00th=[ 28967], | 30.00th=[ 38011], 40.00th=[ 46400], 50.00th=[ 54264], 60.00th=[ 62129], | 70.00th=[ 73925], 80.00th=[ 87557], 90.00th=[109577], 95.00th=[135267], | 99.00th=[196084], 99.50th=[233833], 99.90th=[265290], 99.95th=[265290], | 99.99th=[265290] bw ( KiB/s): min= 31, max= 284, per=26.33%, avg=153.49, stdev=61.78, samples=79 iops : min= 1, max= 17, avg= 8.78, stdev= 3.93, samples=79 write: IOPS=9, BW=147KiB/s (150kB/s)(6032KiB/41048msec); 0 zone resets clat (usec): min=1296, max=226278, avg=45781.46, stdev=44750.78 lat (usec): min=1298, max=226280, avg=45782.98, stdev=44750.76 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1598], 10.00th=[ 2180], 20.00th=[ 7046], | 30.00th=[ 11994], 40.00th=[ 20579], 50.00th=[ 32637], 60.00th=[ 45876], | 70.00th=[ 61080], 80.00th=[ 77071], 90.00th=[114820], 95.00th=[141558], | 99.00th=[193987], 99.50th=[210764], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 31, max= 345, per=23.53%, avg=144.25, stdev=65.05, samples=80 iops : min= 1, max= 21, avg= 8.21, stdev= 4.16, samples=80 lat (usec) : 50=0.39%, 100=4.04%, 250=0.26%, 500=0.13% lat (msec) : 2=4.56%, 4=1.69%, 10=7.16%, 20=7.16%, 50=28.39% lat (msec) : 100=32.68%, 250=13.41%, 500=0.13% cpu : usr=0.03%, sys=3.28%, ctx=1488, 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=178269: Wed Aug 5 10:50:55 2026 read: IOPS=9, BW=159KiB/s (163kB/s)(6032KiB/37919msec) clat (usec): min=27, max=224482, avg=52162.93, stdev=37218.79 lat (usec): min=27, max=224483, avg=52165.05, stdev=37219.26 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 52], 10.00th=[ 61], 20.00th=[ 24249], | 30.00th=[ 32900], 40.00th=[ 38011], 50.00th=[ 47973], 60.00th=[ 55313], | 70.00th=[ 66847], 80.00th=[ 79168], 90.00th=[100140], 95.00th=[124257], | 99.00th=[162530], 99.50th=[183501], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 31, max= 380, per=27.39%, avg=159.70, stdev=69.53, samples=73 iops : min= 1, max= 23, avg= 9.15, stdev= 4.39, samples=73 write: IOPS=10, BW=165KiB/s (169kB/s)(6256KiB/37919msec); 0 zone resets clat (usec): min=1246, max=264205, avg=45477.88, stdev=46826.38 lat (usec): min=1248, max=264207, avg=45479.41, stdev=46826.37 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1680], 10.00th=[ 3359], 20.00th=[ 6194], | 30.00th=[ 10814], 40.00th=[ 20317], 50.00th=[ 31065], 60.00th=[ 42206], | 70.00th=[ 58983], 80.00th=[ 81265], 90.00th=[106431], 95.00th=[132645], | 99.00th=[231736], 99.50th=[252707], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 31, max= 346, per=26.87%, avg=164.70, stdev=68.42, samples=74 iops : min= 1, max= 21, avg= 9.49, stdev= 4.33, samples=74 lat (usec) : 50=2.08%, 100=4.04%, 250=0.65%, 1000=0.13% lat (msec) : 2=3.78%, 4=2.34%, 10=8.72%, 20=6.51%, 50=31.51% lat (msec) : 100=29.04%, 250=10.94%, 500=0.26% cpu : usr=0.05%, sys=3.59%, ctx=1492, 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=584KiB/s (598kB/s), 142KiB/s-159KiB/s (146kB/s-163kB/s), io=23.4MiB (24.5MB), run=37919-41048msec WRITE: bw=614KiB/s (629kB/s), 147KiB/s-165KiB/s (150kB/s-169kB/s), io=24.6MiB (25.8MB), run=37919-41048msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178262: Wed Aug 5 10:51:10 2026 read: IOPS=6, BW=107KiB/s (109kB/s)(5920KiB/55414msec) clat (msec): min=5, max=310, avg=61.29, stdev=51.47 lat (msec): min=5, max=310, avg=61.29, stdev=51.47 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 24], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 44], 60.00th=[ 56], | 70.00th=[ 71], 80.00th=[ 93], 90.00th=[ 127], 95.00th=[ 169], | 99.00th=[ 236], 99.50th=[ 288], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 30, max= 351, per=24.90%, avg=107.57, stdev=70.30, samples=107 iops : min= 1, max= 21, avg= 5.94, stdev= 4.45, samples=107 write: IOPS=7, BW=115KiB/s (118kB/s)(6368KiB/55414msec); 0 zone resets clat (msec): min=15, max=304, avg=81.63, stdev=51.62 lat (msec): min=15, max=304, avg=81.63, stdev=51.62 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 29], 10.00th=[ 34], 20.00th=[ 41], | 30.00th=[ 51], 40.00th=[ 57], 50.00th=[ 66], 60.00th=[ 77], | 70.00th=[ 91], 80.00th=[ 118], 90.00th=[ 155], 95.00th=[ 186], | 99.00th=[ 259], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 29, max= 287, per=25.18%, avg=114.30, stdev=66.71, samples=109 iops : min= 1, max= 17, avg= 6.37, stdev= 4.24, samples=109 lat (msec) : 10=0.52%, 20=7.29%, 50=35.29%, 100=34.77%, 250=21.09% lat (msec) : 500=1.04% cpu : usr=0.03%, sys=1.19%, ctx=1122, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178263: Wed Aug 5 10:51:10 2026 read: IOPS=6, BW=104KiB/s (107kB/s)(5744KiB/55022msec) clat (msec): min=8, max=263, avg=56.55, stdev=45.14 lat (msec): min=8, max=263, avg=56.55, stdev=45.14 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 36], 50.00th=[ 42], 60.00th=[ 48], | 70.00th=[ 59], 80.00th=[ 81], 90.00th=[ 120], 95.00th=[ 159], | 99.00th=[ 213], 99.50th=[ 264], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 29, max= 351, per=25.32%, avg=109.36, stdev=73.58, samples=102 iops : min= 1, max= 21, avg= 6.06, stdev= 4.66, samples=102 write: IOPS=7, BW=119KiB/s (122kB/s)(6544KiB/55022msec); 0 zone resets clat (msec): min=12, max=300, avg=84.74, stdev=53.65 lat (msec): min=12, max=300, avg=84.74, stdev=53.65 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 28], 10.00th=[ 34], 20.00th=[ 42], | 30.00th=[ 48], 40.00th=[ 56], 50.00th=[ 67], 60.00th=[ 81], | 70.00th=[ 104], 80.00th=[ 129], 90.00th=[ 163], 95.00th=[ 201], | 99.00th=[ 245], 99.50th=[ 279], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 30, max= 320, per=26.15%, avg=118.73, stdev=64.98, samples=107 iops : min= 1, max= 20, avg= 6.65, stdev= 4.14, samples=107 lat (msec) : 10=0.26%, 20=4.95%, 50=41.41%, 100=29.56%, 250=23.05% lat (msec) : 500=0.78% cpu : usr=0.03%, sys=1.15%, ctx=1080, 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=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=178264: Wed Aug 5 10:51:10 2026 read: IOPS=7, BW=114KiB/s (116kB/s)(6256KiB/55066msec) clat (msec): min=7, max=286, avg=58.95, stdev=50.86 lat (msec): min=7, max=286, avg=58.95, stdev=50.86 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 20], 20.00th=[ 24], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 40], 60.00th=[ 47], | 70.00th=[ 59], 80.00th=[ 87], 90.00th=[ 138], 95.00th=[ 180], | 99.00th=[ 239], 99.50th=[ 288], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 30, max= 382, per=27.06%, avg=116.91, stdev=78.75, samples=105 iops : min= 1, max= 23, avg= 6.53, stdev= 5.00, samples=105 write: IOPS=6, BW=110KiB/s (112kB/s)(6032KiB/55066msec); 0 zone resets clat (msec): min=14, max=296, avg=83.95, stdev=51.46 lat (msec): min=14, max=296, avg=83.95, stdev=51.46 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 29], 10.00th=[ 34], 20.00th=[ 43], | 30.00th=[ 51], 40.00th=[ 61], 50.00th=[ 69], 60.00th=[ 83], | 70.00th=[ 96], 80.00th=[ 122], 90.00th=[ 155], 95.00th=[ 188], | 99.00th=[ 266], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 256, per=24.22%, avg=109.94, stdev=58.88, samples=106 iops : min= 1, max= 16, avg= 6.09, stdev= 3.75, samples=106 lat (msec) : 10=0.26%, 20=6.12%, 50=40.10%, 100=32.29%, 250=20.31% lat (msec) : 500=0.91% cpu : usr=0.03%, sys=0.99%, ctx=1082, 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=178265: Wed Aug 5 10:51:10 2026 read: IOPS=6, BW=109KiB/s (112kB/s)(6032KiB/55216msec) clat (msec): min=4, max=316, avg=59.97, stdev=51.03 lat (msec): min=4, max=316, avg=59.97, stdev=51.03 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 14], 10.00th=[ 19], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 52], | 70.00th=[ 66], 80.00th=[ 90], 90.00th=[ 133], 95.00th=[ 163], | 99.00th=[ 271], 99.50th=[ 292], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 30, max= 319, per=26.35%, avg=113.81, stdev=70.66, samples=102 iops : min= 1, max= 19, avg= 6.33, stdev= 4.49, samples=102 write: IOPS=7, BW=113KiB/s (116kB/s)(6256KiB/55216msec); 0 zone resets clat (msec): min=20, max=342, avg=82.70, stdev=55.48 lat (msec): min=20, max=342, avg=82.70, stdev=55.49 clat percentiles (msec): | 1.00th=[ 22], 5.00th=[ 29], 10.00th=[ 34], 20.00th=[ 41], | 30.00th=[ 47], 40.00th=[ 56], 50.00th=[ 63], 60.00th=[ 74], | 70.00th=[ 95], 80.00th=[ 121], 90.00th=[ 159], 95.00th=[ 192], | 99.00th=[ 271], 99.50th=[ 305], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 30, max= 318, per=25.50%, avg=115.77, stdev=63.94, samples=104 iops : min= 1, max= 19, avg= 6.46, stdev= 4.06, samples=104 lat (msec) : 10=1.17%, 20=4.95%, 50=40.36%, 100=31.51%, 250=20.31% lat (msec) : 500=1.69% cpu : usr=0.04%, sys=1.02%, ctx=1134, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=432KiB/s (443kB/s), 104KiB/s-114KiB/s (107kB/s-116kB/s), io=23.4MiB (24.5MB), run=55022-55414msec WRITE: bw=455KiB/s (466kB/s), 110KiB/s-119KiB/s (112kB/s-122kB/s), io=24.6MiB (25.8MB), run=55022-55414msec 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=178289: Wed Aug 5 10:51:30 2026 read: IOPS=1, BW=1401KiB/s (1435kB/s)(7168KiB/5115msec) clat (msec): min=232, max=352, avg=306.04, stdev=42.65 lat (msec): min=232, max=352, avg=306.04, stdev=42.65 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 275], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 313], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 342], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 1673, max= 2035, per=56.59%, avg=1953.00, stdev=139.97, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=1001KiB/s (1025kB/s)(5120KiB/5115msec); 0 zone resets clat (msec): min=284, max=925, avg=553.12, stdev=268.11 lat (msec): min=284, max=925, avg=553.17, stdev=268.12 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 447], 60.00th=[ 447], | 70.00th=[ 735], 80.00th=[ 735], 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= 1980, max= 4055, per=55.64%, avg=2688.67, stdev=1183.55, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=8.33%, 500=75.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=8.90%, ctx=194, 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=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=178290: Wed Aug 5 10:51:30 2026 read: IOPS=0, BW=392KiB/s (401kB/s)(2048KiB/5226msec) clat (usec): min=1700, max=275768, avg=138734.34, stdev=193795.38 lat (usec): min=1701, max=275770, avg=138735.74, stdev=193795.93 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 1696], 10.00th=[ 1696], 20.00th=[ 1696], | 30.00th=[ 1696], 40.00th=[ 1696], 50.00th=[ 1696], 60.00th=[274727], | 70.00th=[274727], 80.00th=[274727], 90.00th=[274727], 95.00th=[274727], | 99.00th=[274727], 99.50th=[274727], 99.90th=[274727], 99.95th=[274727], | 99.99th=[274727] bw ( KiB/s): min= 1542, max= 2011, per=51.48%, avg=1776.50, stdev=331.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1959KiB/s (2006kB/s)(10.0MiB/5226msec); 0 zone resets clat (msec): min=175, max=1070, avg=485.87, stdev=316.85 lat (msec): min=175, max=1070, avg=486.29, stdev=316.70 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 207], | 30.00th=[ 271], 40.00th=[ 321], 50.00th=[ 330], 60.00th=[ 376], | 70.00th=[ 443], 80.00th=[ 709], 90.00th=[ 961], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 1957, max= 4063, per=55.40%, avg=2676.83, stdev=1058.58, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 2=8.33%, 250=16.67%, 500=50.00%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=9.91%, ctx=178, 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=178291: Wed Aug 5 10:51:30 2026 read: IOPS=1, BW=1036KiB/s (1060kB/s)(6144KiB/5933msec) clat (msec): min=2, max=459, avg=260.48, stdev=163.86 lat (msec): min=2, max=459, avg=260.48, stdev=163.86 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 222], 50.00th=[ 222], 60.00th=[ 321], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 2003, max= 4071, per=73.25%, avg=2528.00, stdev=1028.72, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1036KiB/s (1060kB/s)(6144KiB/5933msec); 0 zone resets clat (msec): min=204, max=1478, avg=684.09, stdev=450.73 lat (msec): min=205, max=1478, avg=684.28, stdev=450.55 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 1957, max= 4007, per=49.61%, avg=2397.20, stdev=900.35, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 4=8.33%, 250=25.00%, 500=33.33%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=7.99%, ctx=224, 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=178292: Wed Aug 5 10:51:30 2026 read: IOPS=1, BW=1104KiB/s (1131kB/s)(5120KiB/4636msec) clat (usec): min=447, max=333149, avg=236284.29, stdev=137754.30 lat (usec): min=449, max=333151, avg=236285.54, stdev=137754.28 clat percentiles (usec): | 1.00th=[ 449], 5.00th=[ 449], 10.00th=[ 449], 20.00th=[ 449], | 30.00th=[227541], 40.00th=[227541], 50.00th=[304088], 60.00th=[304088], | 70.00th=[312476], 80.00th=[312476], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 1957, max= 6035, per=100.00%, avg=3996.00, stdev=2883.58, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1546KiB/s (1583kB/s)(7168KiB/4636msec); 0 zone resets clat (msec): min=283, max=863, avg=464.23, stdev=215.42 lat (msec): min=283, max=863, avg=464.29, stdev=215.43 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 296], | 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 376], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 651], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1957, max= 4023, per=49.95%, avg=2413.80, stdev=900.13, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33% lat (msec) : 250=8.33%, 500=66.67%, 750=8.33%, 1000=8.33% cpu : usr=0.02%, sys=11.50%, ctx=254, 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=3452KiB/s (3535kB/s), 392KiB/s-1401KiB/s (401kB/s-1435kB/s), io=20.0MiB (20.0MB), run=4636-5933msec WRITE: bw=4833KiB/s (4949kB/s), 1001KiB/s-1959KiB/s (1025kB/s-2006kB/s), io=28.0MiB (29.4MB), run=4636-5933msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178284: Wed Aug 5 10:51:30 2026 read: IOPS=1, BW=1674KiB/s (1714kB/s)(7168KiB/4283msec) clat (msec): min=121, max=1008, avg=327.98, stdev=317.83 lat (msec): min=121, max=1008, avg=327.98, stdev=317.83 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 131], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 211], 60.00th=[ 213], | 70.00th=[ 213], 80.00th=[ 435], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1848, max= 4047, per=75.47%, avg=2370.60, stdev=939.72, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1195KiB/s (1224kB/s)(5120KiB/4283msec); 0 zone resets clat (msec): min=195, max=853, avg=374.74, stdev=270.17 lat (msec): min=195, max=853, avg=374.81, stdev=270.17 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 197], | 30.00th=[ 257], 40.00th=[ 257], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 1946, max= 4087, per=76.00%, avg=3341.67, stdev=1209.62, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 250=50.00%, 500=33.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=3.78%, ctx=92, 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=178285: Wed Aug 5 10:51:30 2026 read: IOPS=0, BW=314KiB/s (322kB/s)(2048KiB/6520msec) clat (msec): min=107, max=166, avg=136.75, stdev=41.69 lat (msec): min=107, max=166, avg=136.76, stdev=41.69 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 108], | 30.00th=[ 108], 40.00th=[ 108], 50.00th=[ 108], 60.00th=[ 167], | 70.00th=[ 167], 80.00th=[ 167], 90.00th=[ 167], 95.00th=[ 167], | 99.00th=[ 167], 99.50th=[ 167], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 1965, max= 2023, per=63.48%, avg=1994.00, stdev=41.01, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1571KiB/s (1608kB/s)(10.0MiB/6520msec); 0 zone resets clat (msec): min=120, max=1763, avg=605.25, stdev=546.31 lat (msec): min=120, max=1763, avg=605.38, stdev=546.28 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 132], | 30.00th=[ 284], 40.00th=[ 355], 50.00th=[ 372], 60.00th=[ 418], | 70.00th=[ 426], 80.00th=[ 852], 90.00th=[ 1334], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 1946, max= 4096, per=68.90%, avg=3029.33, stdev=1150.57, samples=6 iops : min= 1, max= 4, avg= 2.17, stdev= 1.33, samples=6 lat (msec) : 250=33.33%, 500=41.67%, 1000=8.33%, 2000=16.67% cpu : usr=0.02%, sys=5.57%, ctx=162, 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=178286: Wed Aug 5 10:51:30 2026 read: IOPS=1, BW=1049KiB/s (1074kB/s)(6144KiB/5858msec) clat (msec): min=128, max=1223, avg=344.60, stdev=431.27 lat (msec): min=128, max=1223, avg=344.61, stdev=431.27 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 186], | 70.00th=[ 194], 80.00th=[ 194], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 1954, max= 2031, per=63.51%, avg=1995.00, stdev=33.44, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1049KiB/s (1074kB/s)(6144KiB/5858msec); 0 zone resets clat (msec): min=153, max=1416, avg=599.82, stdev=447.06 lat (msec): min=153, max=1416, avg=599.89, stdev=447.06 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 542], | 70.00th=[ 743], 80.00th=[ 743], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 1380, max= 3670, per=51.54%, avg=2266.25, stdev=981.66, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=16.67%, 750=16.67%, 2000=16.67% cpu : usr=0.00%, sys=3.04%, ctx=114, 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=178288: Wed Aug 5 10:51:30 2026 read: IOPS=0, BW=887KiB/s (908kB/s)(5120KiB/5773msec) clat (msec): min=180, max=709, avg=355.89, stdev=226.00 lat (msec): min=180, max=709, avg=355.89, stdev=226.00 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 224], 60.00th=[ 224], | 70.00th=[ 456], 80.00th=[ 456], 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= 2011, max= 3915, per=84.40%, avg=2651.00, stdev=1094.69, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1242KiB/s (1271kB/s)(7168KiB/5773msec); 0 zone resets clat (msec): min=220, max=1240, avg=566.83, stdev=359.37 lat (msec): min=220, max=1241, avg=567.07, stdev=359.72 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 224], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 430], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 735], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 1954, max= 2737, per=48.50%, avg=2132.60, stdev=339.28, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, 2000=8.33% cpu : usr=0.03%, sys=3.10%, ctx=86, 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=3141KiB/s (3216kB/s), 314KiB/s-1674KiB/s (322kB/s-1714kB/s), io=20.0MiB (20.0MB), run=4283-6520msec WRITE: bw=4398KiB/s (4503kB/s), 1049KiB/s-1571KiB/s (1074kB/s-1608kB/s), io=28.0MiB (29.4MB), run=4283-6520msec 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=178300: Wed Aug 5 10:51:52 2026 read: IOPS=0, BW=1901KiB/s (1946kB/s)(12.0MiB/6465msec) clat (msec): min=376, max=4103, avg=2102.52, stdev=1878.79 lat (msec): min=376, max=4103, avg=2102.53, stdev=1878.79 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 1821], 50.00th=[ 1821], 60.00th=[ 1821], | 70.00th=[ 4111], 80.00th=[ 4111], 90.00th=[ 4111], 95.00th=[ 4111], | 99.00th=[ 4111], 99.50th=[ 4111], 99.90th=[ 4111], 99.95th=[ 4111], | 99.99th=[ 4111] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.01%, ctx=56, 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=178301: Wed Aug 5 10:51:52 2026 read: IOPS=0, BW=582KiB/s (596kB/s)(4096KiB/7040msec) clat (nsec): min=4534.8M, max=4534.8M, avg=4534784431.00, stdev= 0.00 lat (nsec): min=4534.8M, max=4534.8M, avg=4534787073.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4530], 5.00th=[ 4530], 10.00th=[ 4530], 20.00th=[ 4530], | 30.00th=[ 4530], 40.00th=[ 4530], 50.00th=[ 4530], 60.00th=[ 4530], | 70.00th=[ 4530], 80.00th=[ 4530], 90.00th=[ 4530], 95.00th=[ 4530], | 99.00th=[ 4530], 99.50th=[ 4530], 99.90th=[ 4530], 99.95th=[ 4530], | 99.99th=[ 4530] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1164KiB/s (1192kB/s)(8192KiB/7040msec); 0 zone resets clat (msec): min=778, max=1560, avg=1169.52, stdev=553.23 lat (msec): min=778, max=1561, avg=1169.83, stdev=553.27 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 1569], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=1.38%, ctx=47, 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=178302: Wed Aug 5 10:51:52 2026 write: IOPS=0, BW=1964KiB/s (2011kB/s)(12.0MiB/6258msec); 0 zone resets clat (msec): min=1163, max=3456, avg=1990.72, stdev=1272.98 lat (msec): min=1164, max=3457, avg=1991.21, stdev=1273.35 clat percentiles (msec): | 1.00th=[ 1167], 5.00th=[ 1167], 10.00th=[ 1167], 20.00th=[ 1167], | 30.00th=[ 1167], 40.00th=[ 1351], 50.00th=[ 1351], 60.00th=[ 1351], | 70.00th=[ 3473], 80.00th=[ 3473], 90.00th=[ 3473], 95.00th=[ 3473], | 99.00th=[ 3473], 99.50th=[ 3473], 99.90th=[ 3473], 99.95th=[ 3473], | 99.99th=[ 3473] bw ( KiB/s): min= 7922, max= 8031, per=100.00%, avg=7976.50, stdev=77.07, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.14%, ctx=73, 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% rand-rw: (groupid=0, jobs=1): err= 0: pid=178303: Wed Aug 5 10:51:52 2026 read: IOPS=0, BW=2081KiB/s (2131kB/s)(12.0MiB/5905msec) clat (msec): min=824, max=3939, avg=1924.81, stdev=1747.11 lat (msec): min=824, max=3939, avg=1924.82, stdev=1747.11 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 3943], 80.00th=[ 3943], 90.00th=[ 3943], 95.00th=[ 3943], | 99.00th=[ 3943], 99.50th=[ 3943], 99.90th=[ 3943], 99.95th=[ 3943], | 99.99th=[ 3943] bw ( KiB/s): min= 7420, max= 8015, per=100.00%, avg=7717.50, stdev=420.73, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=6.47%, ctx=755, 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=178304: Wed Aug 5 10:51:52 2026 read: IOPS=0, BW=638KiB/s (654kB/s)(4096KiB/6418msec) clat (nsec): min=3896.2M, max=3896.2M, avg=3896211207.00, stdev= 0.00 lat (nsec): min=3896.2M, max=3896.2M, avg=3896213937.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3910], 5.00th=[ 3910], 10.00th=[ 3910], 20.00th=[ 3910], | 30.00th=[ 3910], 40.00th=[ 3910], 50.00th=[ 3910], 60.00th=[ 3910], | 70.00th=[ 3910], 80.00th=[ 3910], 90.00th=[ 3910], 95.00th=[ 3910], | 99.00th=[ 3910], 99.50th=[ 3910], 99.90th=[ 3910], 99.95th=[ 3910], | 99.99th=[ 3910] bw ( KiB/s): min= 7420, max= 7420, per=100.00%, avg=7420.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1276KiB/s (1307kB/s)(8192KiB/6418msec); 0 zone resets clat (msec): min=650, max=1627, avg=1138.88, stdev=690.90 lat (msec): min=650, max=1627, avg=1139.16, stdev=690.92 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 1636], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.10%, ctx=78, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178306: Wed Aug 5 10:51:52 2026 write: IOPS=0, BW=1772KiB/s (1815kB/s)(12.0MiB/6933msec); 0 zone resets clat (msec): min=259, max=5192, avg=2257.63, stdev=2596.46 lat (msec): min=260, max=5192, avg=2257.89, stdev=2596.46 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 5201], 80.00th=[ 5201], 90.00th=[ 5201], 95.00th=[ 5201], | 99.00th=[ 5201], 99.50th=[ 5201], 99.90th=[ 5201], 99.95th=[ 5201], | 99.99th=[ 5201] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% c 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=178305: Wed Aug 5 10:51:52 2026 write: IOPS=0, BW=2122KiB/s (2173kB/s)(12.0MiB/5790msec); 0 zone resets clat (msec): min=488, max=3366, avg=1860.67, stdev=1444.00 lat (msec): min=488, max=3367, avg=1860.97, stdev=1444.06 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 1720], 50.00th=[ 1720], 60.00th=[ 1720], | 70.00th=[ 3373], 80.00th=[ 3373], 90.00th=[ 3373], 95.00th=[ 3373], | 99.00th=[ 3373], 99.50th=[ 3373], 99.90th=[ 3373], 99.95th=[ 3373], | 99.99th=[ 3373] bw ( KiB/s): min= 8000, max= 8110, per=100.00%, avg=8055.00, stdev=77.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.31%, ctx=43, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2327KiB/s (2383kB/s), 582KiB/s-1901KiB/s (596kB/s-1946kB/s), io=16.0MiB (16.8MB), run=6465-7040msec WRITE: bw=4655KiB/s (4766kB/s), 1164KiB/s-2122KiB/s (1192kB/s-2173kB/s), io=32.0MiB (33.6MB), run=5790-7040msec pu : usr=0.03%, sys=1.80%, ctx=61, 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=178307: Wed Aug 5 10:51:52 2026 write: IOPS=0, BW=1804KiB/s (1848kB/s)(12.0MiB/6810msec); 0 zone resets clat (msec): min=264, max=3813, avg=2204.58, stdev=1797.72 lat (msec): min=264, max=3813, avg=2205.38, stdev=1797.84 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 2534], 50.00th=[ 2534], 60.00th=[ 2534], | 70.00th=[ 3809], 80.00th=[ 3809], 90.00th=[ 3809], 95.00th=[ 3809], | 99.00th=[ 3809], 99.50th=[ 3809], 99.90th=[ 3809], 99.95th=[ 3809], | 99.99th=[ 3809] bw ( KiB/s): min= 7420, max= 8175, per=100.00%, avg=7797.50, stdev=533.87, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, >=2000=66.67% cpu : usr=0.03%, sys=1.70%, ctx=48, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2553KiB/s (2614kB/s), 638KiB/s-2081KiB/s (654kB/s-2131kB/s), io=16.0MiB (16.8MB), run=5905-6418msec WRITE: bw=4726KiB/s (4840kB/s), 1276KiB/s-1804KiB/s (1307kB/s-1848kB/s), io=32.0MiB (33.6MB), run=6418-6933msec