== sanity test 398b: DIO and buffer IO race ============== 20:30:01 (1786753801) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.22643 s, 9.6 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=179815: Fri Aug 14 20:32:30 2026 read: IOPS=11, BW=46.0KiB/s (47.2kB/s)(5992KiB/130131msec) clat (usec): min=37, max=379840, avg=47661.21, stdev=33326.34 lat (usec): min=37, max=379841, avg=47664.84, stdev=33323.77 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 12518], 10.00th=[ 17433], 20.00th=[ 23725], | 30.00th=[ 29230], 40.00th=[ 34866], 50.00th=[ 41157], 60.00th=[ 46924], | 70.00th=[ 55313], 80.00th=[ 65274], 90.00th=[ 85459], 95.00th=[106431], | 99.00th=[170918], 99.50th=[191890], 99.90th=[287310], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 7, max= 104, per=25.17%, avg=45.55, stdev=18.89, samples=257 iops : min= 1, max= 26, avg=10.75, stdev= 4.77, samples=257 write: IOPS=12, BW=48.4KiB/s (49.5kB/s)(6296KiB/130131msec); 0 zone resets clat (usec): min=1204, max=256265, avg=37182.73, stdev=37742.62 lat (usec): min=1205, max=256265, avg=37187.98, stdev=37742.81 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1647], 10.00th=[ 2442], 20.00th=[ 5145], | 30.00th=[ 9241], 40.00th=[ 17433], 50.00th=[ 26870], 60.00th=[ 34866], | 70.00th=[ 47973], 80.00th=[ 64226], 90.00th=[ 91751], 95.00th=[109577], | 99.00th=[162530], 99.50th=[185598], 99.90th=[238027], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 6, max= 119, per=25.32%, avg=47.86, stdev=21.27, samples=257 iops : min= 1, max= 29, avg=11.33, stdev= 5.34, samples=257 lat (usec) : 50=0.07%, 100=1.43%, 250=0.23%, 750=0.07% lat (msec) : 2=4.17%, 4=4.43%, 10=7.71%, 20=10.12%, 50=39.36% lat (msec) : 100=26.01%, 250=6.28%, 500=0.13% cpu : usr=0.09%, sys=5.28%, ctx=6827, 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=179816: Fri Aug 14 20:32:30 2026 read: IOPS=11, BW=44.8KiB/s (45.9kB/s)(5940KiB/132572msec) clat (usec): min=38, max=480041, avg=49559.00, stdev=34276.68 lat (usec): min=38, max=480042, avg=49561.21, stdev=34276.50 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 13435], 10.00th=[ 19006], 20.00th=[ 24511], | 30.00th=[ 30016], 40.00th=[ 36439], 50.00th=[ 42206], 60.00th=[ 49021], | 70.00th=[ 58983], 80.00th=[ 68682], 90.00th=[ 89654], 95.00th=[107480], | 99.00th=[177210], 99.50th=[193987], 99.90th=[263193], 99.95th=[480248], | 99.99th=[480248] bw ( KiB/s): min= 6, max= 104, per=24.53%, avg=44.40, stdev=17.81, samples=261 iops : min= 1, max= 26, avg=10.46, stdev= 4.50, samples=261 write: IOPS=11, BW=47.9KiB/s (49.0kB/s)(6348KiB/132572msec); 0 zone resets clat (usec): min=1163, max=290367, avg=37041.00, stdev=38003.16 lat (usec): min=1164, max=290368, avg=37043.24, stdev=38003.48 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1598], 10.00th=[ 2507], 20.00th=[ 4883], | 30.00th=[ 9110], 40.00th=[ 16188], 50.00th=[ 26084], 60.00th=[ 35390], | 70.00th=[ 47973], 80.00th=[ 65799], 90.00th=[ 89654], 95.00th=[111674], | 99.00th=[154141], 99.50th=[191890], 99.90th=[274727], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 7, max= 160, per=25.22%, avg=47.67, stdev=22.85, samples=260 iops : min= 1, max= 40, avg=11.28, stdev= 5.76, samples=260 lat (usec) : 50=0.16%, 100=1.11%, 250=0.03%, 500=0.07%, 750=0.07% lat (msec) : 2=3.87%, 4=4.23%, 10=8.27%, 20=10.38%, 50=38.41% lat (msec) : 100=26.53%, 250=6.71%, 500=0.16% cpu : usr=0.08%, sys=5.36%, ctx=6957, 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=179817: Fri Aug 14 20:32:30 2026 read: IOPS=11, BW=46.6KiB/s (47.7kB/s)(6028KiB/129291msec) clat (usec): min=36, max=266463, avg=47583.66, stdev=30902.54 lat (usec): min=36, max=266465, avg=47585.77, stdev=30903.01 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 12387], 10.00th=[ 18482], 20.00th=[ 24773], | 30.00th=[ 29754], 40.00th=[ 35390], 50.00th=[ 41157], 60.00th=[ 47973], | 70.00th=[ 56361], 80.00th=[ 67634], 90.00th=[ 84411], 95.00th=[100140], | 99.00th=[152044], 99.50th=[200279], 99.90th=[238027], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 7, max= 95, per=25.86%, avg=46.81, stdev=18.71, samples=251 iops : min= 1, max= 23, avg=11.07, stdev= 4.70, samples=251 write: IOPS=12, BW=48.4KiB/s (49.6kB/s)(6260KiB/129291msec); 0 zone resets clat (usec): min=1183, max=511571, avg=36656.39, stdev=38529.25 lat (usec): min=1184, max=511573, avg=36661.23, stdev=38528.38 clat percentiles (usec): | 1.00th=[ 1319], 5.00th=[ 1663], 10.00th=[ 2507], 20.00th=[ 5276], | 30.00th=[ 8979], 40.00th=[ 17433], 50.00th=[ 26084], 60.00th=[ 34341], | 70.00th=[ 46400], 80.00th=[ 61604], 90.00th=[ 84411], 95.00th=[110625], | 99.00th=[158335], 99.50th=[198181], 99.90th=[231736], 99.95th=[509608], | 99.99th=[509608] bw ( KiB/s): min= 7, max= 111, per=25.51%, avg=48.21, stdev=20.95, samples=253 iops : min= 1, max= 27, avg=11.42, stdev= 5.26, samples=253 lat (usec) : 50=0.16%, 100=1.27%, 250=0.23%, 1000=0.03% lat (msec) : 2=3.84%, 4=4.17%, 10=8.30%, 20=9.34%, 50=40.10% lat (msec) : 100=26.86%, 250=5.63%, 500=0.03%, 750=0.03% cpu : usr=0.07%, sys=5.47%, ctx=6921, 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=179818: Fri Aug 14 20:32:30 2026 read: IOPS=11, BW=47.1KiB/s (48.2kB/s)(6052KiB/128579msec) clat (usec): min=46, max=270814, avg=46674.36, stdev=31792.48 lat (usec): min=47, max=270815, avg=46676.15, stdev=31791.92 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 10945], 10.00th=[ 17695], 20.00th=[ 23987], | 30.00th=[ 28443], 40.00th=[ 33817], 50.00th=[ 39060], 60.00th=[ 45876], | 70.00th=[ 55313], 80.00th=[ 65274], 90.00th=[ 84411], 95.00th=[105382], | 99.00th=[156238], 99.50th=[212861], 99.90th=[265290], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 103, per=25.86%, avg=46.81, stdev=19.02, samples=253 iops : min= 1, max= 25, avg=11.06, stdev= 4.79, samples=253 write: IOPS=12, BW=48.5KiB/s (49.7kB/s)(6236KiB/128579msec); 0 zone resets clat (usec): min=1164, max=540760, avg=37030.19, stdev=40756.97 lat (usec): min=1165, max=540762, avg=37035.68, stdev=40757.47 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 1614], 10.00th=[ 2540], 20.00th=[ 5211], | 30.00th=[ 9241], 40.00th=[ 16319], 50.00th=[ 25297], 60.00th=[ 33424], | 70.00th=[ 45351], 80.00th=[ 62653], 90.00th=[ 88605], 95.00th=[114820], | 99.00th=[170918], 99.50th=[187696], 99.90th=[333448], 99.95th=[541066], | 99.99th=[541066] bw ( KiB/s): min= 7, max= 119, per=25.38%, avg=47.98, stdev=21.99, samples=254 iops : min= 1, max= 29, avg=11.36, stdev= 5.55, samples=254 lat (usec) : 50=0.07%, 100=1.53%, 250=0.26%, 500=0.03% lat (msec) : 2=3.42%, 4=4.79%, 10=8.11%, 20=10.38%, 50=40.14% lat (msec) : 100=24.35%, 250=6.77%, 500=0.13%, 750=0.03% cpu : usr=0.09%, sys=5.54%, ctx=6938, 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=181KiB/s (185kB/s), 44.8KiB/s-47.1KiB/s (45.9kB/s-48.2kB/s), io=23.4MiB (24.6MB), run=128579-132572msec WRITE: bw=190KiB/s (194kB/s), 47.9KiB/s-48.5KiB/s (49.0kB/s-49.7kB/s), io=24.6MiB (25.7MB), run=128579-132572msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179810: Fri Aug 14 20:33:12 2026 read: IOPS=8, BW=34.1KiB/s (34.0kB/s)(5992KiB/175509msec) clat (msec): min=5, max=657, avg=46.64, stdev=46.04 lat (msec): min=5, max=657, avg=46.64, stdev=46.04 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 49], 80.00th=[ 66], 90.00th=[ 107], 95.00th=[ 138], | 99.00th=[ 211], 99.50th=[ 255], 99.90th=[ 326], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7, max= 135, per=25.19%, avg=34.26, stdev=23.84, samples=338 iops : min= 1, max= 33, avg= 7.92, stdev= 6.01, samples=338 write: IOPS=8, BW=35.9KiB/s (36.7kB/s)(6296KiB/175509msec); 0 zone resets clat (msec): min=9, max=338, avg=66.92, stdev=45.33 lat (msec): min=9, max=338, avg=66.92, stdev=45.33 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 64], | 70.00th=[ 78], 80.00th=[ 97], 90.00th=[ 126], 95.00th=[ 155], | 99.00th=[ 236], 99.50th=[ 271], 99.90th=[ 313], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 7, max= 111, per=24.85%, avg=35.54, stdev=21.90, samples=343 iops : min= 1, max= 27, avg= 8.24, stdev= 5.50, samples=343 lat (msec) : 10=2.15%, 20=12.76%, 50=43.55%, 100=26.56%, 250=14.32% lat (msec) : 500=0.62%, 750=0.03% cpu : usr=0.06%, sys=2.17%, ctx=4994, 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=179811: Fri Aug 14 20:33:12 2026 read: IOPS=8, BW=33.8KiB/s (34.6kB/s)(5940KiB/175610msec) clat (msec): min=6, max=747, avg=46.12, stdev=43.86 lat (msec): min=6, max=747, avg=46.12, stdev=43.86 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 41], | 70.00th=[ 50], 80.00th=[ 67], 90.00th=[ 101], 95.00th=[ 124], | 99.00th=[ 201], 99.50th=[ 236], 99.90th=[ 351], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 133, per=25.45%, avg=34.61, stdev=23.44, samples=334 iops : min= 1, max= 33, avg= 8.01, stdev= 5.90, samples=334 write: IOPS=9, BW=36.1KiB/s (37.0kB/s)(6348KiB/175610msec); 0 zone resets clat (msec): min=11, max=382, avg=67.28, stdev=47.02 lat (msec): min=11, max=382, avg=67.29, stdev=47.02 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 63], | 70.00th=[ 78], 80.00th=[ 99], 90.00th=[ 130], 95.00th=[ 159], | 99.00th=[ 247], 99.50th=[ 284], 99.90th=[ 347], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 111, per=25.14%, avg=35.95, stdev=21.46, samples=344 iops : min= 1, max= 27, avg= 8.33, stdev= 5.40, samples=344 lat (msec) : 10=1.37%, 20=12.70%, 50=44.66%, 100=26.69%, 250=13.90% lat (msec) : 500=0.65%, 750=0.03% cpu : usr=0.07%, sys=2.21%, ctx=5009, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179812: Fri Aug 14 20:33:12 2026 read: IOPS=8, BW=34.7KiB/s (35.5kB/s)(6028KiB/173918msec) clat (msec): min=6, max=357, avg=44.97, stdev=37.79 lat (msec): min=6, max=357, avg=44.97, stdev=37.79 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 48], 80.00th=[ 66], 90.00th=[ 94], 95.00th=[ 126], | 99.00th=[ 182], 99.50th=[ 205], 99.90th=[ 253], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 7, max= 135, per=26.08%, avg=35.47, stdev=22.34, samples=330 iops : min= 1, max= 33, avg= 8.22, stdev= 5.63, samples=330 write: IOPS=8, BW=35.0KiB/s (36.9kB/s)(6260KiB/173918msec); 0 zone resets clat (msec): min=10, max=775, avg=67.62, stdev=50.49 lat (msec): min=10, max=775, avg=67.63, stdev=50.49 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 38], 40.00th=[ 44], 50.00th=[ 52], 60.00th=[ 63], | 70.00th=[ 78], 80.00th=[ 97], 90.00th=[ 130], 95.00th=[ 163], | 99.00th=[ 255], 99.50th=[ 279], 99.90th=[ 326], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 119, per=25.14%, avg=35.95, stdev=21.76, samples=338 iops : min= 1, max= 29, avg= 8.34, stdev= 5.48, samples=338 lat (msec) : 10=1.66%, 20=11.69%, 50=46.09%, 100=26.86%, 250=13.09% lat (msec) : 500=0.59%, 1000=0.03% cpu : usr=0.05%, sys=2.14%, ctx=5027, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179813: Fri Aug 14 20:33:12 2026 read: IOPS=8, BW=34.6KiB/s (35.4kB/s)(6052KiB/175152msec) clat (msec): min=5, max=372, avg=46.34, stdev=42.24 lat (msec): min=5, max=372, avg=46.35, stdev=42.24 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 65], 90.00th=[ 99], 95.00th=[ 134], | 99.00th=[ 215], 99.50th=[ 262], 99.90th=[ 334], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 7, max= 119, per=25.69%, avg=34.94, stdev=23.08, samples=337 iops : min= 1, max= 29, avg= 8.09, stdev= 5.82, samples=337 write: IOPS=8, BW=35.6KiB/s (36.5kB/s)(6236KiB/175152msec); 0 zone resets clat (msec): min=13, max=777, avg=67.16, stdev=49.15 lat (msec): min=13, max=777, avg=67.16, stdev=49.15 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 23], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 53], 60.00th=[ 63], | 70.00th=[ 78], 80.00th=[ 94], 90.00th=[ 129], 95.00th=[ 159], | 99.00th=[ 234], 99.50th=[ 284], 99.90th=[ 342], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 103, per=25.12%, avg=35.92, stdev=20.88, samples=338 iops : min= 1, max= 25, avg= 8.33, stdev= 5.27, samples=338 lat (msec) : 10=1.30%, 20=12.21%, 50=45.41%, 100=27.38%, 250=13.02% lat (msec) : 500=0.65%, 1000=0.03% cpu : usr=0.06%, sys=2.17%, ctx=5030, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=137KiB/s (140kB/s), 33.8KiB/s-34.7KiB/s (34.6kB/s-35.5kB/s), io=23.4MiB (24.6MB), run=173918-175610msec WRITE: bw=143KiB/s (147kB/s), 35.6KiB/s-36.1KiB/s (36.5kB/s-37.0kB/s), io=24.6MiB (25.7MB), run=173918-175610msec 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=179867: Fri Aug 14 20:34:04 2026 read: IOPS=9, BW=153KiB/s (156kB/s)(5920KiB/38750msec) clat (usec): min=52, max=252708, avg=55079.80, stdev=34724.30 lat (usec): min=53, max=252709, avg=55092.34, stdev=34726.04 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 79], 10.00th=[ 18220], 20.00th=[ 28443], | 30.00th=[ 35390], 40.00th=[ 43779], 50.00th=[ 49546], 60.00th=[ 58459], | 70.00th=[ 67634], 80.00th=[ 78119], 90.00th=[ 98042], 95.00th=[119014], | 99.00th=[166724], 99.50th=[189793], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 287, per=24.46%, avg=151.18, stdev=61.85, samples=76 iops : min= 1, max= 17, avg= 8.64, stdev= 3.85, samples=76 write: IOPS=10, BW=164KiB/s (168kB/s)(6368KiB/38750msec); 0 zone resets clat (usec): min=1705, max=220461, avg=45721.72, stdev=40768.54 lat (usec): min=1707, max=220463, avg=45724.03, stdev=40768.66 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2147], 10.00th=[ 3818], 20.00th=[ 8356], | 30.00th=[ 15401], 40.00th=[ 25035], 50.00th=[ 34866], 60.00th=[ 46924], | 70.00th=[ 61604], 80.00th=[ 79168], 90.00th=[105382], 95.00th=[124257], | 99.00th=[177210], 99.50th=[185598], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 31, max= 347, per=25.19%, avg=163.74, stdev=65.44, samples=76 iops : min= 1, max= 21, avg= 9.43, stdev= 4.11, samples=76 lat (usec) : 100=2.99%, 250=0.52%, 500=0.13% lat (msec) : 2=1.82%, 4=3.78%, 10=6.77%, 20=7.81%, 50=32.42% lat (msec) : 100=33.46%, 250=10.16%, 500=0.13% cpu : usr=0.05%, sys=5.13%, ctx=1825, 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=179868: Fri Aug 14 20:34:04 2026 read: IOPS=9, BW=155KiB/s (159kB/s)(5744KiB/36979msec) clat (usec): min=41, max=278415, avg=54143.51, stdev=38645.77 lat (usec): min=41, max=278416, avg=54144.81, stdev=38645.82 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 71], 10.00th=[ 10814], 20.00th=[ 26870], | 30.00th=[ 34866], 40.00th=[ 41157], 50.00th=[ 47973], 60.00th=[ 55837], | 70.00th=[ 65274], 80.00th=[ 80217], 90.00th=[ 96994], 95.00th=[111674], | 99.00th=[198181], 99.50th=[270533], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 30, max= 285, per=25.14%, avg=155.37, stdev=61.06, samples=73 iops : min= 1, max= 17, avg= 8.90, stdev= 3.87, samples=73 write: IOPS=11, BW=177KiB/s (181kB/s)(6544KiB/36979msec); 0 zone resets clat (usec): min=1537, max=218970, avg=42479.32, stdev=39969.59 lat (usec): min=1539, max=218972, avg=42486.75, stdev=39982.46 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 2999], 10.00th=[ 4883], 20.00th=[ 7832], | 30.00th=[ 11863], 40.00th=[ 19792], 50.00th=[ 31065], 60.00th=[ 44303], | 70.00th=[ 58459], 80.00th=[ 72877], 90.00th=[ 93848], 95.00th=[122160], | 99.00th=[173016], 99.50th=[189793], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 380, per=27.47%, avg=178.58, stdev=74.11, samples=72 iops : min= 1, max= 23, avg=10.38, stdev= 4.66, samples=72 lat (usec) : 50=0.13%, 100=3.65%, 250=0.13%, 500=0.13%, 1000=0.13% lat (msec) : 2=1.30%, 4=3.12%, 10=9.51%, 20=9.24%, 50=32.68% lat (msec) : 100=31.38%, 250=8.20%, 500=0.39% cpu : usr=0.06%, sys=5.27%, ctx=1792, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179869: Fri Aug 14 20:34:04 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(6256KiB/37612msec) clat (usec): min=51, max=257207, avg=55270.07, stdev=35384.95 lat (usec): min=52, max=257208, avg=55271.43, stdev=35384.99 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 67], 10.00th=[ 17171], 20.00th=[ 30278], | 30.00th=[ 38011], 40.00th=[ 43779], 50.00th=[ 50594], 60.00th=[ 57410], | 70.00th=[ 66323], 80.00th=[ 80217], 90.00th=[ 98042], 95.00th=[116917], | 99.00th=[168821], 99.50th=[210764], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 31, max= 320, per=26.94%, avg=166.46, stdev=57.05, samples=74 iops : min= 1, max= 20, avg= 9.61, stdev= 3.66, samples=74 write: IOPS=10, BW=160KiB/s (164kB/s)(6032KiB/37612msec); 0 zone resets clat (usec): min=1803, max=229918, avg=42204.71, stdev=38351.38 lat (usec): min=1805, max=229918, avg=42210.27, stdev=38350.89 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 2638], 10.00th=[ 4424], 20.00th=[ 8455], | 30.00th=[ 14353], 40.00th=[ 22676], 50.00th=[ 30802], 60.00th=[ 42206], | 70.00th=[ 53216], 80.00th=[ 70779], 90.00th=[ 93848], 95.00th=[117965], | 99.00th=[164627], 99.50th=[168821], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 31, max= 339, per=24.83%, avg=161.40, stdev=61.22, samples=73 iops : min= 1, max= 21, avg= 9.29, stdev= 3.87, samples=73 lat (usec) : 100=4.04%, 250=0.26%, 500=0.13%, 750=0.13%, 1000=0.13% lat (msec) : 2=1.04%, 4=3.26%, 10=7.55%, 20=6.77%, 50=34.11% lat (msec) : 100=33.59%, 250=8.85%, 500=0.13% cpu : usr=0.07%, sys=5.14%, ctx=1780, 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=179870: Fri Aug 14 20:34:04 2026 read: IOPS=9, BW=159KiB/s (163kB/s)(6032KiB/37954msec) clat (usec): min=42, max=228800, avg=54476.67, stdev=35416.54 lat (usec): min=43, max=228801, avg=54478.15, stdev=35416.38 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 65], 10.00th=[ 82], 20.00th=[ 28181], | 30.00th=[ 35390], 40.00th=[ 42730], 50.00th=[ 51643], 60.00th=[ 58983], | 70.00th=[ 67634], 80.00th=[ 82314], 90.00th=[ 96994], 95.00th=[114820], | 99.00th=[162530], 99.50th=[196084], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 31, max= 320, per=25.96%, avg=160.43, stdev=61.33, samples=74 iops : min= 1, max= 20, avg= 9.23, stdev= 3.91, samples=74 write: IOPS=10, BW=165KiB/s (169kB/s)(6256KiB/37954msec); 0 zone resets clat (usec): min=1672, max=244115, avg=44149.01, stdev=40942.64 lat (usec): min=1674, max=244118, avg=44169.58, stdev=40976.05 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2540], 10.00th=[ 4490], 20.00th=[ 8029], | 30.00th=[ 13304], 40.00th=[ 21365], 50.00th=[ 33817], 60.00th=[ 44303], | 70.00th=[ 59507], 80.00th=[ 76022], 90.00th=[102237], 95.00th=[123208], | 99.00th=[173016], 99.50th=[193987], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 30, max= 320, per=25.33%, avg=164.64, stdev=62.47, samples=75 iops : min= 1, max= 20, avg= 9.49, stdev= 3.93, samples=75 lat (usec) : 50=0.39%, 100=4.82%, 250=0.13% lat (msec) : 2=1.69%, 4=2.99%, 10=8.20%, 20=8.33%, 50=29.43% lat (msec) : 100=33.72%, 250=10.29% cpu : usr=0.05%, sys=5.35%, ctx=1806, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=618KiB/s (633kB/s), 153KiB/s-166KiB/s (156kB/s-170kB/s), io=23.4MiB (24.5MB), run=36979-38750msec WRITE: bw=650KiB/s (666kB/s), 160KiB/s-177KiB/s (164kB/s-181kB/s), io=24.6MiB (25.8MB), run=36979-38750msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179871: Fri Aug 14 20:34:18 2026 read: IOPS=7, BW=112KiB/s (115kB/s)(5920KiB/52733msec) clat (msec): min=5, max=279, avg=56.81, stdev=47.50 lat (msec): min=5, max=279, avg=56.81, stdev=47.50 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 19], 20.00th=[ 24], | 30.00th=[ 28], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 63], 80.00th=[ 79], 90.00th=[ 121], 95.00th=[ 157], | 99.00th=[ 249], 99.50th=[ 271], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 351, per=25.00%, avg=113.26, stdev=69.67, samples=100 iops : min= 1, max= 21, avg= 6.24, stdev= 4.39, samples=100 write: IOPS=7, BW=121KiB/s (124kB/s)(6368KiB/52733msec); 0 zone resets clat (msec): min=17, max=313, avg=79.50, stdev=52.33 lat (msec): min=17, max=313, avg=79.50, stdev=52.32 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 32], 20.00th=[ 40], | 30.00th=[ 48], 40.00th=[ 55], 50.00th=[ 64], 60.00th=[ 74], | 70.00th=[ 91], 80.00th=[ 111], 90.00th=[ 155], 95.00th=[ 201], | 99.00th=[ 268], 99.50th=[ 284], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 348, per=25.68%, avg=122.24, stdev=69.69, samples=101 iops : min= 1, max= 21, avg= 6.80, stdev= 4.41, samples=101 lat (msec) : 10=0.65%, 20=6.77%, 50=38.54%, 100=34.38%, 250=18.62% lat (msec) : 500=1.04% cpu : usr=0.04%, sys=1.80%, ctx=1278, 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=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=179872: Fri Aug 14 20:34:18 2026 read: IOPS=6, BW=109KiB/s (112kB/s)(5744KiB/52592msec) clat (msec): min=9, max=340, avg=54.82, stdev=43.76 lat (msec): min=9, max=340, avg=54.82, stdev=43.76 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 25], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 43], 60.00th=[ 50], | 70.00th=[ 59], 80.00th=[ 77], 90.00th=[ 110], 95.00th=[ 146], | 99.00th=[ 194], 99.50th=[ 313], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 22, max= 415, per=24.92%, avg=112.88, stdev=80.70, samples=99 iops : min= 1, max= 25, avg= 6.22, stdev= 5.08, samples=99 write: IOPS=7, BW=124KiB/s (127kB/s)(6544KiB/52592msec); 0 zone resets clat (msec): min=14, max=298, avg=80.01, stdev=49.68 lat (msec): min=14, max=298, avg=80.01, stdev=49.68 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 27], 10.00th=[ 32], 20.00th=[ 39], | 30.00th=[ 47], 40.00th=[ 57], 50.00th=[ 66], 60.00th=[ 78], | 70.00th=[ 94], 80.00th=[ 116], 90.00th=[ 148], 95.00th=[ 184], | 99.00th=[ 234], 99.50th=[ 249], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 414, per=26.51%, avg=126.19, stdev=68.07, samples=101 iops : min= 1, max= 25, avg= 7.06, stdev= 4.31, samples=101 lat (msec) : 10=0.39%, 20=6.12%, 50=39.06%, 100=35.16%, 250=18.62% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=1.81%, ctx=1241, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179873: Fri Aug 14 20:34:18 2026 read: IOPS=7, BW=119KiB/s (121kB/s)(6256KiB/52773msec) clat (msec): min=9, max=295, avg=55.57, stdev=46.28 lat (msec): min=9, max=295, avg=55.57, stdev=46.28 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 18], 20.00th=[ 24], | 30.00th=[ 29], 40.00th=[ 34], 50.00th=[ 40], 60.00th=[ 48], | 70.00th=[ 59], 80.00th=[ 78], 90.00th=[ 115], 95.00th=[ 163], | 99.00th=[ 249], 99.50th=[ 255], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 30, max= 382, per=26.33%, avg=119.28, stdev=78.29, samples=102 iops : min= 1, max= 23, avg= 6.62, stdev= 4.96, samples=102 write: IOPS=7, BW=114KiB/s (117kB/s)(6032KiB/52773msec); 0 zone resets clat (msec): min=16, max=302, avg=81.55, stdev=55.06 lat (msec): min=16, max=302, avg=81.55, stdev=55.06 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 40], | 30.00th=[ 48], 40.00th=[ 56], 50.00th=[ 64], 60.00th=[ 75], | 70.00th=[ 92], 80.00th=[ 118], 90.00th=[ 161], 95.00th=[ 203], | 99.00th=[ 271], 99.50th=[ 288], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 30, max= 383, per=23.52%, avg=111.97, stdev=69.37, samples=103 iops : min= 1, max= 23, avg= 6.17, stdev= 4.39, samples=103 lat (msec) : 10=0.39%, 20=7.68%, 50=39.84%, 100=33.33%, 250=17.06% lat (msec) : 500=1.69% cpu : usr=0.04%, sys=1.78%, ctx=1228, 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=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=179874: Fri Aug 14 20:34:18 2026 read: IOPS=7, BW=114KiB/s (117kB/s)(6032KiB/52845msec) clat (msec): min=8, max=301, avg=54.25, stdev=42.16 lat (msec): min=8, max=301, avg=54.25, stdev=42.16 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 18], 20.00th=[ 25], | 30.00th=[ 31], 40.00th=[ 37], 50.00th=[ 42], 60.00th=[ 49], | 70.00th=[ 61], 80.00th=[ 74], 90.00th=[ 104], 95.00th=[ 142], | 99.00th=[ 209], 99.50th=[ 275], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 350, per=25.59%, avg=115.91, stdev=65.44, samples=99 iops : min= 1, max= 21, avg= 6.41, stdev= 4.15, samples=99 write: IOPS=7, BW=118KiB/s (121kB/s)(6256KiB/52845msec); 0 zone resets clat (msec): min=14, max=347, avg=82.13, stdev=54.18 lat (msec): min=14, max=347, avg=82.14, stdev=54.19 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 40], | 30.00th=[ 48], 40.00th=[ 55], 50.00th=[ 64], 60.00th=[ 78], | 70.00th=[ 94], 80.00th=[ 126], 90.00th=[ 159], 95.00th=[ 190], | 99.00th=[ 264], 99.50th=[ 288], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 30, max= 382, per=24.66%, avg=117.38, stdev=66.45, samples=102 iops : min= 1, max= 23, avg= 6.50, stdev= 4.20, samples=102 lat (msec) : 10=0.65%, 20=6.77%, 50=39.71%, 100=33.20%, 250=18.75% lat (msec) : 500=0.91% cpu : usr=0.03%, sys=1.78%, ctx=1280, 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=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=453KiB/s (464kB/s), 109KiB/s-119KiB/s (112kB/s-121kB/s), io=23.4MiB (24.5MB), run=52592-52845msec WRITE: bw=477KiB/s (488kB/s), 114KiB/s-124KiB/s (117kB/s-127kB/s), io=24.6MiB (25.8MB), run=52592-52845msec 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=179887: Fri Aug 14 20:34:35 2026 read: IOPS=1, BW=1206KiB/s (1235kB/s)(7168KiB/5945msec) clat (usec): min=922, max=2890.0k, avg=506558.19, stdev=1054384.65 lat (usec): min=924, max=2890.1k, avg=506559.73, stdev=1054384.71 clat percentiles (usec): | 1.00th=[ 922], 5.00th=[ 922], 10.00th=[ 922], | 20.00th=[ 1795], 30.00th=[ 117965], 40.00th=[ 117965], | 50.00th=[ 123208], 60.00th=[ 196084], 70.00th=[ 196084], | 80.00th=[ 217056], 90.00th=[2902459], 95.00th=[2902459], | 99.00th=[2902459], 99.50th=[2902459], 99.90th=[2902459], | 99.95th=[2902459], 99.99th=[2902459] bw ( KiB/s): min= 2023, max= 2938, per=75.11%, avg=2217.20, stdev=403.02, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 write: IOPS=0, BW=861KiB/s (882kB/s)(5120KiB/5945msec); 0 zone resets clat (msec): min=208, max=891, avg=474.92, stdev=253.40 lat (msec): min=208, max=891, avg=475.03, stdev=253.41 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 209], 10.00th=[ 209], 20.00th=[ 209], | 30.00th=[ 384], 40.00th=[ 384], 50.00th=[ 409], 60.00th=[ 409], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 894], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 2023, max= 2043, per=49.14%, avg=2031.00, stdev= 9.80, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 250=41.67%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.93%, ctx=653, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179888: Fri Aug 14 20:34:35 2026 read: IOPS=0, BW=295KiB/s (302kB/s)(2048KiB/6936msec) clat (msec): min=241, max=271, avg=256.85, stdev=21.19 lat (msec): min=241, max=271, avg=256.86, stdev=21.19 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 271], 95.00th=[ 271], | 99.00th=[ 271], 99.50th=[ 271], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 1424, max= 2048, per=58.81%, avg=1736.00, stdev=441.23, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1476KiB/s (1512kB/s)(10.0MiB/6936msec); 0 zone resets clat (msec): min=115, max=3225, avg=632.12, stdev=966.22 lat (msec): min=115, max=3225, avg=632.63, stdev=966.04 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 155], | 30.00th=[ 159], 40.00th=[ 262], 50.00th=[ 268], 60.00th=[ 271], | 70.00th=[ 296], 80.00th=[ 347], 90.00th=[ 1234], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 2023, max= 6144, per=74.07%, avg=3061.33, stdev=1719.01, samples=6 iops : min= 1, max= 6, avg= 2.33, stdev= 1.97, samples=6 lat (msec) : 250=33.33%, 500=50.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.04%, sys=11.30%, ctx=163, 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=179889: Fri Aug 14 20:34:35 2026 read: IOPS=1, BW=1199KiB/s (1228kB/s)(6144KiB/5124msec) clat (usec): min=1400, max=125521, avg=54227.37, stdev=55809.70 lat (usec): min=1401, max=125523, avg=54228.69, stdev=55809.86 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1401], 10.00th=[ 1401], 20.00th=[ 3556], | 30.00th=[ 3556], 40.00th=[ 25822], 50.00th=[ 25822], 60.00th=[ 49021], | 70.00th=[120062], 80.00th=[120062], 90.00th=[125305], 95.00th=[125305], | 99.00th=[125305], 99.50th=[125305], 99.90th=[125305], 99.95th=[125305], | 99.99th=[125305] bw ( KiB/s): min= 4047, max= 4087, per=100.00%, avg=4067.00, stdev=28.28, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1199KiB/s (1228kB/s)(6144KiB/5124msec); 0 zone resets clat (msec): min=188, max=3255, avg=790.63, stdev=1211.63 lat (msec): min=190, max=3255, avg=790.97, stdev=1211.47 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 368], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 3272], 95.00th=[ 3272], | 99.00th=[ 3272], 99.50th=[ 3272], 99.90th=[ 3272], 99.95th=[ 3272], | 99.99th=[ 3272] bw ( KiB/s): min= 1517, max= 4047, per=58.01%, avg=2397.75, stdev=1124.39, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 2=8.33%, 4=8.33%, 50=16.67%, 250=41.67%, 500=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.02%, sys=8.53%, ctx=113, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179890: Fri Aug 14 20:34:35 2026 read: IOPS=0, BW=909KiB/s (931kB/s)(5120KiB/5634msec) clat (usec): min=793, max=257956, avg=94488.18, stdev=127848.21 lat (usec): min=795, max=257958, avg=94489.67, stdev=127848.74 clat percentiles (usec): | 1.00th=[ 791], 5.00th=[ 791], 10.00th=[ 791], 20.00th=[ 791], | 30.00th=[ 1958], 40.00th=[ 1958], 50.00th=[ 3261], 60.00th=[ 3261], | 70.00th=[208667], 80.00th=[208667], 90.00th=[258999], 95.00th=[258999], | 99.00th=[258999], 99.50th=[258999], 99.90th=[258999], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 2043, max= 6071, per=100.00%, avg=4057.00, stdev=2848.23, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1272KiB/s (1303kB/s)(7168KiB/5634msec); 0 zone resets clat (msec): min=177, max=2878, avg=722.30, stdev=969.34 lat (msec): min=177, max=2889, avg=723.97, stdev=973.22 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 209], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 351], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 659], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 1440, max= 4087, per=57.98%, avg=2396.25, stdev=1160.87, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 4=8.33%, 250=33.33%, 500=16.67%, 750=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.02%, sys=10.83%, ctx=190, 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=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=2953KiB/s (3024kB/s), 295KiB/s-1206KiB/s (302kB/s-1235kB/s), io=20.0MiB (20.0MB), run=5124-6936msec WRITE: bw=4134KiB/s (4233kB/s), 861KiB/s-1476KiB/s (882kB/s-1512kB/s), io=28.0MiB (29.4MB), run=5124-6936msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179892: Fri Aug 14 20:34:36 2026 read: IOPS=0, BW=925KiB/s (947kB/s)(7168KiB/7750msec) clat (msec): min=101, max=2896, avg=969.82, stdev=1054.76 lat (msec): min=101, max=2896, avg=969.82, stdev=1054.76 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 176], | 30.00th=[ 443], 40.00th=[ 443], 50.00th=[ 502], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 1972], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 1996, max= 2048, per=76.67%, avg=2025.50, stdev=20.50, samples=6 iops : min= 1, max= 2, avg= 1.33, stdev= 0.52, samples=6 write: IOPS=0, BW=661KiB/s (677kB/s)(5120KiB/7750msec); 0 zone resets clat (msec): min=88, max=462, avg=173.75, stdev=161.53 lat (msec): min=88, max=462, avg=173.86, stdev=161.53 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 89], | 30.00th=[ 95], 40.00th=[ 95], 50.00th=[ 108], 60.00th=[ 108], | 70.00th=[ 116], 80.00th=[ 116], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 2035, max= 6071, per=91.50%, avg=3384.67, stdev=2326.44, samples=3 iops : min= 1, max= 5, avg= 2.67, stdev= 2.08, samples=3 lat (msec) : 100=16.67%, 250=33.33%, 500=16.67%, 750=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.45%, ctx=59, 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=179893: Fri Aug 14 20:34:36 2026 read: IOPS=0, BW=283KiB/s (290kB/s)(2048KiB/7227msec) clat (msec): min=119, max=446, avg=282.78, stdev=231.45 lat (msec): min=119, max=446, avg=282.78, stdev=231.45 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 120], | 30.00th=[ 120], 40.00th=[ 120], 50.00th=[ 120], 60.00th=[ 447], | 70.00th=[ 447], 80.00th=[ 447], 90.00th=[ 447], 95.00th=[ 447], | 99.00th=[ 447], 99.50th=[ 447], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 1572, max= 2035, per=68.26%, avg=1803.50, stdev=327.39, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1417KiB/s (1451kB/s)(10.0MiB/7227msec); 0 zone resets clat (msec): min=152, max=3419, avg=655.29, stdev=986.26 lat (msec): min=152, max=3419, avg=655.41, stdev=986.27 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 159], | 30.00th=[ 169], 40.00th=[ 211], 50.00th=[ 363], 60.00th=[ 422], | 70.00th=[ 514], 80.00th=[ 518], 90.00th=[ 625], 95.00th=[ 3406], | 99.00th=[ 3406], 99.50th=[ 3406], 99.90th=[ 3406], 99.95th=[ 3406], | 99.99th=[ 3406] bw ( KiB/s): min= 1996, max= 4023, per=76.25%, avg=2820.40, stdev=1083.91, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (msec) : 250=41.67%, 500=25.00%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=4.72%, ctx=144, 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=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=179894: Fri Aug 14 20:34:36 2026 read: IOPS=0, BW=872KiB/s (893kB/s)(6144KiB/7046msec) clat (msec): min=67, max=519, avg=224.83, stdev=188.16 lat (msec): min=67, max=519, avg=224.83, stdev=188.16 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 68], 10.00th=[ 68], 20.00th=[ 118], | 30.00th=[ 118], 40.00th=[ 120], 50.00th=[ 120], 60.00th=[ 122], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 2035, max= 4023, per=100.00%, avg=2702.00, stdev=1144.04, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=0, BW=872KiB/s (893kB/s)(6144KiB/7046msec); 0 zone resets clat (msec): min=141, max=4046, avg=922.48, stdev=1535.23 lat (msec): min=141, max=4046, avg=922.58, stdev=1535.23 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 184], | 30.00th=[ 184], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 363], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 4044], 95.00th=[ 4044], | 99.00th=[ 4044], 99.50th=[ 4044], 99.90th=[ 4044], 99.95th=[ 4044], | 99.99th=[ 4044] bw ( KiB/s): min= 1783, max= 2035, per=52.99%, avg=1960.25, stdev=119.36, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.68%, ctx=84, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179895: Fri Aug 14 20:34:36 2026 read: IOPS=0, BW=694KiB/s (711kB/s)(5120KiB/7378msec) clat (msec): min=96, max=575, avg=314.81, stdev=206.25 lat (msec): min=96, max=575, avg=314.82, stdev=206.26 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 205], 40.00th=[ 205], 50.00th=[ 209], 60.00th=[ 209], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 2011, max= 2048, per=77.04%, avg=2035.50, stdev=17.45, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 write: IOPS=0, BW=972KiB/s (995kB/s)(7168KiB/7378msec); 0 zone resets clat (msec): min=100, max=3926, avg=820.89, stdev=1386.88 lat (msec): min=101, max=3927, avg=821.06, stdev=1386.87 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 124], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 211], 60.00th=[ 592], | 70.00th=[ 592], 80.00th=[ 625], 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= 1996, max= 2048, per=54.69%, avg=2023.00, stdev=26.10, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=8.33%, 750=25.00%, >=2000=8.33% cpu : usr=0.04%, sys=3.78%, ctx=77, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=2643KiB/s (2706kB/s), 283KiB/s-925KiB/s (290kB/s-947kB/s), io=20.0MiB (20.0MB), run=7046-7750msec WRITE: bw=3700KiB/s (3788kB/s), 661KiB/s-1417KiB/s (677kB/s-1451kB/s), io=28.0MiB (29.4MB), run=7046-7750msec 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=179902: Fri Aug 14 20:34:54 2026 read: IOPS=0, BW=2667KiB/s (2731kB/s)(12.0MiB/4607msec) clat (msec): min=246, max=3685, avg=1518.63, stdev=1886.23 lat (msec): min=246, max=3685, avg=1518.64, stdev=1886.23 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 3675], 80.00th=[ 3675], 90.00th=[ 3675], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 6068, max= 8031, per=100.00%, avg=7049.50, stdev=1388.05, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.43%, ctx=55, 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=179903: Fri Aug 14 20:34:54 2026 read: IOPS=0, BW=592KiB/s (607kB/s)(4096KiB/6914msec) clat (nsec): min=1282.0M, max=1282.0M, avg=1282042234.00, stdev= 0.00 lat (nsec): min=1282.0M, max=1282.0M, avg=1282044391.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1284], 5.00th=[ 1284], 10.00th=[ 1284], 20.00th=[ 1284], | 30.00th=[ 1284], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1185KiB/s (1213kB/s)(8192KiB/6914msec); 0 zone resets clat (msec): min=304, max=5202, avg=2753.66, stdev=3463.38 lat (msec): min=305, max=5204, avg=2754.71, stdev=3464.15 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 305], 60.00th=[ 5201], | 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= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.59%, ctx=38, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179904: Fri Aug 14 20:34:54 2026 write: IOPS=0, BW=1907KiB/s (1953kB/s)(12.0MiB/6443msec); 0 zone resets clat (msec): min=674, max=4045, avg=2141.97, stdev=1727.14 lat (msec): min=675, max=4047, avg=2142.92, stdev=1728.09 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 1703], 50.00th=[ 1703], 60.00th=[ 1703], | 70.00th=[ 4044], 80.00th=[ 4044], 90.00th=[ 4044], 95.00th=[ 4044], | 99.00th=[ 4044], 99.50th=[ 4044], 99.90th=[ 4044], 99.95th=[ 4044], | 99.99th=[ 4044] 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) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.75%, ctx=47, 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=179905: Fri Aug 14 20:34:54 2026 write: IOPS=0, BW=2198KiB/s (2251kB/s)(12.0MiB/5591msec); 0 zone resets clat (msec): min=287, max=4431, avg=1850.18, stdev=2251.65 lat (msec): min=287, max=4432, avg=1851.11, stdev=2252.24 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 288], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 4463], 80.00th=[ 4463], 90.00th=[ 4463], 95.00th=[ 4463], | 99.00th=[ 4463], 99.50th=[ 4463], 99.90th=[ 4463], 99.95th=[ 4463], | 99.99th=[ 4463] bw ( KiB/s): min= 6410, max= 8143, per=100.00%, avg=7276.50, stdev=1225.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.04%, sys=2.50%, ctx=50, 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=2370KiB/s (2427kB/s), 592KiB/s-2667KiB/s (607kB/s-2731kB/s), io=16.0MiB (16.8MB), run=4607-6914msec WRITE: bw=4739KiB/s (4853kB/s), 1185KiB/s-2198KiB/s (1213kB/s-2251kB/s), io=32.0MiB (33.6MB), run=5591-6914msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179907: Fri Aug 14 20:34:55 2026 read: IOPS=0, BW=2192KiB/s (2244kB/s)(12.0MiB/5607msec) clat (msec): min=872, max=3729, avg=1868.45, stdev=1613.09 lat (msec): min=872, max=3729, avg=1868.45, stdev=1613.09 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 3742], 80.00th=[ 3742], 90.00th=[ 3742], 95.00th=[ 3742], | 99.00th=[ 3742], 99.50th=[ 3742], 99.90th=[ 3742], 99.95th=[ 3742], | 99.99th=[ 3742] bw ( KiB/s): min= 8000, max= 8192, per=100.00%, avg=8096.00, stdev=135.76, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=8.78%, ctx=847, 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=179908: Fri Aug 14 20:34:55 2026 read: IOPS=0, BW=710KiB/s (727kB/s)(4096KiB/5766msec) clat (nsec): min=746179k, max=746179k, avg=746179369.00, stdev= 0.00 lat (nsec): min=746181k, max=746181k, avg=746181064.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 743], 80.00th=[ 743], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 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 write: IOPS=0, BW=1421KiB/s (1455kB/s)(8192KiB/5766msec); 0 zone resets clat (msec): min=576, max=4437, avg=2506.93, stdev=2730.10 lat (msec): min=577, max=4440, avg=2508.99, stdev=2731.57 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 4463], | 70.00th=[ 4463], 80.00th=[ 4463], 90.00th=[ 4463], 95.00th=[ 4463], | 99.00th=[ 4463], 99.50th=[ 4463], 99.90th=[ 4463], 99.95th=[ 4463], | 99.99th=[ 4463] 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 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=1.82%, ctx=154, 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=179909: Fri Aug 14 20:34:55 2026 write: IOPS=0, BW=1882KiB/s (1927kB/s)(12.0MiB/6530msec); 0 zone resets clat (msec): min=405, max=5393, avg=2173.04, stdev=2793.43 lat (msec): min=406, max=5394, avg=2176.07, stdev=2791.76 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 5403], 80.00th=[ 5403], 90.00th=[ 5403], 95.00th=[ 5403], | 99.00th=[ 5403], 99.50th=[ 5403], 99.90th=[ 5403], 99.95th=[ 5403], | 99.99th=[ 5403] bw ( KiB/s): min= 8126, max= 8143, per=100.00%, avg=8134.50, stdev=12.02, 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=0.06%, sys=1.56%, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=179910: Fri Aug 14 20:34:55 2026 write: IOPS=0, BW=2141KiB/s (2192kB/s)(12.0MiB/5740msec); 0 zone resets clat (msec): min=702, max=4281, avg=1912.17, stdev=2052.33 lat (msec): min=703, max=4282, avg=1912.81, stdev=2052.53 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 751], 50.00th=[ 751], 60.00th=[ 751], | 70.00th=[ 4279], 80.00th=[ 4279], 90.00th=[ 4279], 95.00th=[ 4279], | 99.00th=[ 4279], 99.50th=[ 4279], 99.90th=[ 4279], 99.95th=[ 4279], | 99.99th=[ 4279] bw ( KiB/s): min= 8000, max= 8047, per=100.00%, avg=8023.50, stdev=33.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.44%, ctx=74, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2841KiB/s (2910kB/s), 710KiB/s-2192KiB/s (727kB/s-2244kB/s), io=16.0MiB (16.8MB), run=5607-5766msec WRITE: bw=5018KiB/s (5139kB/s), 1421KiB/s-2141KiB/s (1455kB/s-2192kB/s), io=32.0MiB (33.6MB), run=5740-6530msec