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Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,124 @@ Testing with async I/O engine: posixaio seq-read: (g=0): rw=read, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=1 fio-3.40 Starting 1 process seq-read: Laying out IO file (1 file / 2048MiB) Jobs: 1 (f=1): [R(1)][100.0%][r=15.3GiB/s][r=15.7k IOPS][eta 00m:00s] seq-read: (groupid=0, jobs=1): err= 0: pid=42586: Fri Aug 22 15:15:53 2025 read: IOPS=15.7k, BW=15.3GiB/s (16.4GB/s)(459GiB/30001msec) clat (usec): min=60, max=222, avg=63.66, stdev= 2.44 lat (usec): min=60, max=222, avg=63.68, stdev= 2.44 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 63], | 30.00th=[ 64], 40.00th=[ 64], 50.00th=[ 64], 60.00th=[ 64], | 70.00th=[ 65], 80.00th=[ 65], 90.00th=[ 67], 95.00th=[ 68], | 99.00th=[ 73], 99.50th=[ 76], 99.90th=[ 95], 99.95th=[ 100], | 99.99th=[ 108] bw ( MiB/s): min=15337, max=15787, per=100.00%, avg=15682.03, stdev=80.43, samples=59 iops : min=15337, max=15787, avg=15681.61, stdev=80.34, samples=59 lat (usec) : 100=99.94%, 250=0.06% cpu : usr=0.51%, sys=99.48%, ctx=12, majf=0, minf=74 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=470286,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=1 Run status group 0 (all jobs): READ: bw=15.3GiB/s (16.4GB/s), 15.3GiB/s-15.3GiB/s (16.4GB/s-16.4GB/s), io=459GiB (493GB), run=30001-30001msec seq-write: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=1 fio-3.40 Starting 1 process seq-write: Laying out IO file (1 file / 2048MiB) Jobs: 1 (f=1): [f(1)][100.0%][w=11.2GiB/s][w=11.5k IOPS][eta 00m:00s] seq-write: (groupid=0, jobs=1): err= 0: pid=42606: Fri Aug 22 15:16:25 2025 write: IOPS=12.0k, BW=11.7GiB/s (12.6GB/s)(352GiB/30001msec); 0 zone resets clat (usec): min=70, max=115807, avg=81.20, stdev=259.16 lat (usec): min=72, max=115809, avg=83.05, stdev=259.17 clat percentiles (usec): | 1.00th=[ 74], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 76], | 30.00th=[ 77], 40.00th=[ 77], 50.00th=[ 77], 60.00th=[ 78], | 70.00th=[ 79], 80.00th=[ 80], 90.00th=[ 81], 95.00th=[ 83], | 99.00th=[ 92], 99.50th=[ 115], 99.90th=[ 873], 99.95th=[ 1811], | 99.99th=[ 6325] bw ( MiB/s): min= 832, max=12543, per=98.93%, avg=11896.32, stdev=2208.11, samples=60 iops : min= 832, max=12543, avg=11895.90, stdev=2208.04, samples=60 lat (usec) : 100=99.26%, 250=0.43%, 500=0.07%, 750=0.05%, 1000=0.10% lat (msec) : 2=0.06%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01% lat (msec) : 250=0.01% cpu : usr=2.60%, sys=94.13%, ctx=8044, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,360774,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=1 Run status group 0 (all jobs): WRITE: bw=11.7GiB/s (12.6GB/s), 11.7GiB/s-11.7GiB/s (12.6GB/s-12.6GB/s), io=352GiB (378GB), run=30001-30001msec rand-read: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=posixaio, iodepth=64 ... fio-3.40 Starting 4 processes rand-read: Laying out IO file (1 file / 2048MiB) rand-read: Laying out IO file (1 file / 2048MiB) rand-read: Laying out IO file (1 file / 2048MiB) rand-read: Laying out IO file (1 file / 2048MiB) Jobs: 4 (f=4): [r(4)][100.0%][r=176MiB/s][r=45.1k IOPS][eta 00m:00s] rand-read: (groupid=0, jobs=4): err= 0: pid=42629: Fri Aug 22 15:16:59 2025 read: IOPS=42.0k, BW=164MiB/s (172MB/s)(4917MiB/30002msec) slat (nsec): min=0, max=44000, avg=359.97, stdev=657.69 clat (usec): min=858, max=55603, avg=1524.40, stdev=571.86 lat (usec): min=858, max=55604, avg=1524.76, stdev=571.85 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1237], 10.00th=[ 1287], 20.00th=[ 1336], | 30.00th=[ 1369], 40.00th=[ 1401], 50.00th=[ 1434], 60.00th=[ 1467], | 70.00th=[ 1516], 80.00th=[ 1582], 90.00th=[ 1729], 95.00th=[ 1926], | 99.00th=[ 3687], 99.50th=[ 3982], 99.90th=[ 5080], 99.95th=[ 6325], | 99.99th=[29754] bw ( KiB/s): min=141032, max=185331, per=100.00%, avg=167860.66, stdev=1750.16, samples=236 iops : min=35258, max=46332, avg=41963.85, stdev=437.53, samples=236 lat (usec) : 1000=0.01% lat (msec) : 2=95.96%, 4=3.55%, 10=0.47%, 20=0.01%, 50=0.01% lat (msec) : 100=0.01% cpu : usr=2.55%, sys=2.57%, ctx=1083301, majf=0, minf=39 IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=48.7%, 16=51.3%, 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=99.1%, 8=0.9%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1258702,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=64 Run status group 0 (all jobs): READ: bw=164MiB/s (172MB/s), 164MiB/s-164MiB/s (172MB/s-172MB/s), io=4917MiB (5156MB), run=30002-30002msec rand-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=posixaio, iodepth=64 ... fio-3.40 Starting 4 processes rand-write: Laying out IO file (1 file / 2048MiB) rand-write: Laying out IO file (1 file / 2048MiB) rand-write: Laying out IO file (1 file / 2048MiB) rand-write: Laying out IO file (1 file / 2048MiB) Jobs: 4 (f=4): [w(4)][100.0%][w=108MiB/s][w=27.6k IOPS][eta 00m:00s] rand-write: (groupid=0, jobs=4): err= 0: pid=42747: Fri Aug 22 15:17:34 2025 write: IOPS=26.7k, BW=104MiB/s (109MB/s)(3129MiB/30002msec); 0 zone resets slat (nsec): min=0, max=46000, avg=377.97, stdev=721.84 clat (usec): min=706, max=46304, avg=2395.90, stdev=4005.77 lat (usec): min=707, max=46305, avg=2396.28, stdev=4005.83 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1172], 10.00th=[ 1221], 20.00th=[ 1270], | 30.00th=[ 1319], 40.00th=[ 1352], 50.00th=[ 1401], 60.00th=[ 1434], | 70.00th=[ 1483], 80.00th=[ 1582], 90.00th=[ 1827], 95.00th=[10814], | 99.00th=[22152], 99.50th=[23462], 99.90th=[27657], 99.95th=[29230], | 99.99th=[33817] bw ( KiB/s): min=10806, max=183091, per=99.08%, avg=105816.82, stdev=6054.33, samples=240 iops : min= 2700, max=45772, avg=26452.88, stdev=1513.63, samples=240 lat (usec) : 750=0.01%, 1000=0.13% lat (msec) : 2=91.64%, 4=1.41%, 10=1.68%, 20=2.99%, 50=2.15% cpu : usr=1.66%, sys=1.69%, ctx=695409, majf=0, minf=38 IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=48.4%, 16=51.6%, 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=99.1%, 8=0.9%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,801036,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=64 Run status group 0 (all jobs): WRITE: bw=104MiB/s (109MB/s), 104MiB/s-104MiB/s (109MB/s-109MB/s), io=3129MiB (3281MB), run=30002-30002msec This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. 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Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,124 @@ Testing with async I/O engine: posixaio seq-read: (g=0): rw=read, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=1 fio-3.40 Starting 1 process seq-read: Laying out IO file (1 file / 2048MiB) Jobs: 1 (f=1): [R(1)][100.0%][r=14.5GiB/s][r=14.9k IOPS][eta 00m:00s] seq-read: (groupid=0, jobs=1): err= 0: pid=696: Fri Aug 22 19:28:22 2025 read: IOPS=16.4k, BW=16.0GiB/s (17.2GB/s)(480GiB/30001msec) clat (usec): min=52, max=8159, avg=60.73, stdev=38.24 lat (usec): min=52, max=8160, avg=60.78, stdev=38.98 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 56], 10.00th=[ 57], 20.00th=[ 57], | 30.00th=[ 58], 40.00th=[ 59], 50.00th=[ 59], 60.00th=[ 60], | 70.00th=[ 61], 80.00th=[ 62], 90.00th=[ 65], 95.00th=[ 71], | 99.00th=[ 102], 99.50th=[ 123], 99.90th=[ 200], 99.95th=[ 343], | 99.99th=[ 1565] bw ( MiB/s): min=11592, max=17158, per=100.00%, avg=16415.70, stdev=1090.23, samples=59 iops : min=11592, max=17158, avg=16415.20, stdev=1090.19, samples=59 lat (usec) : 100=98.89%, 250=1.04%, 500=0.03%, 750=0.01%, 1000=0.01% lat (msec) : 2=0.01%, 4=0.01%, 10=0.01% cpu : usr=0.91%, sys=99.09%, ctx=18, majf=0, minf=74 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=491969,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=1 Run status group 0 (all jobs): READ: bw=16.0GiB/s (17.2GB/s), 16.0GiB/s-16.0GiB/s (17.2GB/s-17.2GB/s), io=480GiB (516GB), run=30001-30001msec seq-write: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=1 fio-3.40 Starting 1 process seq-write: Laying out IO file (1 file / 2048MiB) Jobs: 1 (f=1): [W(1)][100.0%][w=12.0GiB/s][w=12.3k IOPS][eta 00m:00s] seq-write: (groupid=0, jobs=1): err= 0: pid=704: Fri Aug 22 19:28:54 2025 write: IOPS=11.7k, BW=11.4GiB/s (12.2GB/s)(342GiB/30001msec); 0 zone resets clat (usec): min=63, max=17462, avg=83.35, stdev=90.22 lat (usec): min=65, max=17464, avg=85.50, stdev=90.37 clat percentiles (usec): | 1.00th=[ 71], 5.00th=[ 72], 10.00th=[ 73], 20.00th=[ 74], | 30.00th=[ 74], 40.00th=[ 75], 50.00th=[ 76], 60.00th=[ 77], | 70.00th=[ 79], 80.00th=[ 81], 90.00th=[ 86], 95.00th=[ 97], | 99.00th=[ 239], 99.50th=[ 441], 99.90th=[ 955], 99.95th=[ 1369], | 99.99th=[ 3326] bw ( MiB/s): min= 1431, max=12802, per=100.00%, avg=11669.95, stdev=2141.32, samples=59 iops : min= 1431, max=12802, avg=11669.44, stdev=2141.25, samples=59 lat (usec) : 100=95.45%, 250=3.56%, 500=0.64%, 750=0.10%, 1000=0.15% lat (msec) : 2=0.05%, 4=0.02%, 10=0.01%, 20=0.01% cpu : usr=3.23%, sys=96.26%, ctx=770, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,349861,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=1 Run status group 0 (all jobs): WRITE: bw=11.4GiB/s (12.2GB/s), 11.4GiB/s-11.4GiB/s (12.2GB/s-12.2GB/s), io=342GiB (367GB), run=30001-30001msec rand-read: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=posixaio, iodepth=64 ... fio-3.40 Starting 4 processes rand-read: Laying out IO file (1 file / 2048MiB) rand-read: Laying out IO file (1 file / 2048MiB) rand-read: Laying out IO file (1 file / 2048MiB) rand-read: Laying out IO file (1 file / 2048MiB) Jobs: 4 (f=4): [r(4)][100.0%][r=186MiB/s][r=47.7k IOPS][eta 00m:00s] rand-read: (groupid=0, jobs=4): err= 0: pid=714: Fri Aug 22 19:29:30 2025 read: IOPS=48.9k, BW=191MiB/s (200MB/s)(5726MiB/30002msec) slat (nsec): min=0, max=699000, avg=710.78, stdev=1047.48 clat (usec): min=102, max=17113, avg=1306.96, stdev=380.52 lat (usec): min=148, max=17114, avg=1307.67, stdev=380.52 clat percentiles (usec): | 1.00th=[ 766], 5.00th=[ 898], 10.00th=[ 979], 20.00th=[ 1074], | 30.00th=[ 1139], 40.00th=[ 1205], 50.00th=[ 1270], 60.00th=[ 1336], | 70.00th=[ 1418], 80.00th=[ 1500], 90.00th=[ 1647], 95.00th=[ 1778], | 99.00th=[ 2180], 99.50th=[ 2540], 99.90th=[ 4228], 99.95th=[ 5735], | 99.99th=[14222] bw ( KiB/s): min=155388, max=221817, per=100.00%, avg=195604.73, stdev=3433.39, samples=236 iops : min=38846, max=55452, avg=48899.83, stdev=858.34, samples=236 lat (usec) : 250=0.01%, 500=0.01%, 750=0.75%, 1000=11.34% lat (msec) : 2=86.13%, 4=1.65%, 10=0.09%, 20=0.03% cpu : usr=4.42%, sys=4.90%, ctx=756208, majf=0, minf=38 IO depths : 1=0.1%, 2=0.1%, 4=0.5%, 8=58.3%, 16=41.2%, 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=97.7%, 8=2.1%, 16=0.2%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1465974,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=64 Run status group 0 (all jobs): READ: bw=191MiB/s (200MB/s), 191MiB/s-191MiB/s (200MB/s-200MB/s), io=5726MiB (6005MB), run=30002-30002msec rand-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=posixaio, iodepth=64 ... fio-3.40 Starting 4 processes rand-write: Laying out IO file (1 file / 2048MiB) rand-write: Laying out IO file (1 file / 2048MiB) rand-write: Laying out IO file (1 file / 2048MiB) rand-write: Laying out IO file (1 file / 2048MiB) Jobs: 4 (f=4): [w(4)][100.0%][w=27.9MiB/s][w=7131 IOPS][eta 00m:00s] rand-write: (groupid=0, jobs=4): err= 0: pid=727: Fri Aug 22 19:30:05 2025 write: IOPS=17.4k, BW=68.1MiB/s (71.4MB/s)(2043MiB/30007msec); 0 zone resets slat (nsec): min=0, max=4641.0k, avg=795.02, stdev=9453.01 clat (usec): min=87, max=245131, avg=3668.14, stdev=4107.40 lat (usec): min=137, max=245132, avg=3668.94, stdev=4107.58 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 2147], 10.00th=[ 2278], 20.00th=[ 2442], | 30.00th=[ 2606], 40.00th=[ 2737], 50.00th=[ 2868], 60.00th=[ 2999], | 70.00th=[ 3195], 80.00th=[ 3556], 90.00th=[ 4948], 95.00th=[ 8029], | 99.00th=[ 18744], 99.50th=[ 21627], 99.90th=[ 40633], 99.95th=[ 57410], | 99.99th=[235930] bw ( KiB/s): min=19714, max=94453, per=99.37%, avg=69291.70, stdev=4785.17, samples=240 iops : min= 4926, max=23612, avg=17321.73, stdev=1196.28, samples=240 lat (usec) : 100=0.01%, 250=0.01%, 500=0.01%, 1000=0.01% lat (msec) : 2=1.91%, 4=83.03%, 10=11.74%, 20=2.58%, 50=0.67% lat (msec) : 100=0.05%, 250=0.01% cpu : usr=2.05%, sys=2.62%, ctx=390457, majf=0, minf=39 IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=50.4%, 16=49.6%, 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=99.0%, 8=1.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,523119,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=64 Run status group 0 (all jobs): WRITE: bw=68.1MiB/s (71.4MB/s), 68.1MiB/s-68.1MiB/s (71.4MB/s-71.4MB/s), io=2043MiB (2143MB), run=30007-30007msec This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. 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Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,125 @@ Testing with async I/O engine: posixaio seq-read: (g=0): rw=read, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=1 fio-3.40 Starting 1 process seq-read: Laying out IO file (1 file / 2048MiB) Jobs: 1 (f=1): [R(1)][100.0%][r=14.1GiB/s][r=14.4k IOPS][eta 00m:00s] seq-read: (groupid=0, jobs=1): err= 0: pid=728: Fri Aug 22 19:36:00 2025 read: IOPS=13.8k, BW=13.5GiB/s (14.5GB/s)(405GiB/30001msec) clat (usec): min=60, max=42925, avg=72.10, stdev=79.60 lat (usec): min=60, max=42925, avg=72.14, stdev=79.61 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 67], | 30.00th=[ 68], 40.00th=[ 68], 50.00th=[ 69], 60.00th=[ 70], | 70.00th=[ 71], 80.00th=[ 74], 90.00th=[ 80], 95.00th=[ 90], | 99.00th=[ 129], 99.50th=[ 157], 99.90th=[ 293], 99.95th=[ 424], | 99.99th=[ 1221] bw ( MiB/s): min= 8617, max=14838, per=100.00%, avg=13830.91, stdev=878.86, samples=59 iops : min= 8617, max=14838, avg=13830.44, stdev=878.88, samples=59 lat (usec) : 100=97.17%, 250=2.69%, 500=0.10%, 750=0.02%, 1000=0.01% lat (msec) : 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01% cpu : usr=0.86%, sys=99.13%, ctx=15, majf=0, minf=75 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=414541,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=1 Run status group 0 (all jobs): READ: bw=13.5GiB/s (14.5GB/s), 13.5GiB/s-13.5GiB/s (14.5GB/s-14.5GB/s), io=405GiB (435GB), run=30001-30001msec seq-write: (g=0): rw=write, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=1 fio-3.40 Starting 1 process seq-write: Laying out IO file (1 file / 2048MiB) Jobs: 1 (f=1): [f(1)][100.0%][w=10.7GiB/s][w=11.0k IOPS][eta 00m:00s] seq-write: (groupid=0, jobs=1): err= 0: pid=736: Fri Aug 22 19:36:31 2025 write: IOPS=11.2k, BW=10.9GiB/s (11.7GB/s)(327GiB/30001msec); 0 zone resets clat (usec): min=65, max=12770, avg=87.03, stdev=74.06 lat (usec): min=67, max=19127, avg=89.26, stdev=80.53 clat percentiles (usec): | 1.00th=[ 71], 5.00th=[ 73], 10.00th=[ 74], 20.00th=[ 75], | 30.00th=[ 77], 40.00th=[ 79], 50.00th=[ 80], 60.00th=[ 82], | 70.00th=[ 83], 80.00th=[ 85], 90.00th=[ 90], 95.00th=[ 102], | 99.00th=[ 326], 99.50th=[ 519], 99.90th=[ 922], 99.95th=[ 1004], | 99.99th=[ 2114] bw ( MiB/s): min= 1677, max=12218, per=100.00%, avg=11177.83, stdev=2152.19, samples=59 iops : min= 1677, max=12218, avg=11177.36, stdev=2152.14, samples=59 lat (usec) : 100=94.33%, 250=4.39%, 500=0.70%, 750=0.37%, 1000=0.17% lat (msec) : 2=0.04%, 4=0.01%, 10=0.01%, 20=0.01% cpu : usr=3.13%, sys=95.61%, ctx=2488, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,335168,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=1 Run status group 0 (all jobs): WRITE: bw=10.9GiB/s (11.7GB/s), 10.9GiB/s-10.9GiB/s (11.7GB/s-11.7GB/s), io=327GiB (351GB), run=30001-30001msec rand-read: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=posixaio, iodepth=64 ... fio-3.40 Starting 4 processes rand-read: Laying out IO file (1 file / 2048MiB) rand-read: Laying out IO file (1 file / 2048MiB) rand-read: Laying out IO file (1 file / 2048MiB) rand-read: Laying out IO file (1 file / 2048MiB) Jobs: 4 (f=4): [r(4)][100.0%][r=204MiB/s][r=52.2k IOPS][eta 00m:00s] rand-read: (groupid=0, jobs=4): err= 0: pid=751: Fri Aug 22 19:37:10 2025 read: IOPS=41.4k, BW=162MiB/s (170MB/s)(4854MiB/30002msec) slat (nsec): min=0, max=3849.0k, avg=704.57, stdev=4341.73 clat (usec): min=19, max=103071, avg=1542.57, stdev=1326.84 lat (usec): min=41, max=103072, avg=1543.27, stdev=1326.96 clat percentiles (usec): | 1.00th=[ 807], 5.00th=[ 963], 10.00th=[ 1057], 20.00th=[ 1172], | 30.00th=[ 1254], 40.00th=[ 1336], 50.00th=[ 1418], 60.00th=[ 1500], | 70.00th=[ 1598], 80.00th=[ 1729], 90.00th=[ 1942], 95.00th=[ 2180], | 99.00th=[ 3752], 99.50th=[ 5669], 99.90th=[17433], 99.95th=[28967], | 99.99th=[50594] bw ( KiB/s): min=96931, max=211336, per=99.88%, avg=165460.69, stdev=6196.21, samples=236 iops : min=24232, max=52834, avg=41363.85, stdev=1549.04, samples=236 lat (usec) : 20=0.01%, 50=0.01%, 100=0.01%, 250=0.01%, 500=0.01% lat (usec) : 750=0.44%, 1000=6.40% lat (msec) : 2=84.97%, 4=7.28%, 10=0.66%, 20=0.15%, 50=0.07% lat (msec) : 100=0.01%, 250=0.01% cpu : usr=3.97%, sys=4.38%, ctx=643923, majf=0, minf=39 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=54.3%, 16=45.4%, 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=98.2%, 8=1.7%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1242543,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=64 Run status group 0 (all jobs): READ: bw=162MiB/s (170MB/s), 162MiB/s-162MiB/s (170MB/s-170MB/s), io=4854MiB (5089MB), run=30002-30002msec rand-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=posixaio, iodepth=64 ... fio-3.40 Starting 4 processes rand-write: Laying out IO file (1 file / 2048MiB) rand-write: Laying out IO file (1 file / 2048MiB) rand-write: Laying out IO file (1 file / 2048MiB) rand-write: Laying out IO file (1 file / 2048MiB) Jobs: 1 (f=1): [f(1),E(3)][100.0%][w=3549KiB/s][w=887 IOPS][eta 00m:00s] rand-write: (groupid=0, jobs=4): err= 0: pid=772: Fri Aug 22 19:37:46 2025 write: IOPS=20.4k, BW=79.8MiB/s (83.7MB/s)(2395MiB/30003msec); 0 zone resets slat (nsec): min=0, max=1880.0k, avg=709.88, stdev=2826.83 clat (usec): min=1185, max=123495, avg=3128.70, stdev=2583.57 lat (usec): min=1185, max=123496, avg=3129.41, stdev=2583.69 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 1975], 10.00th=[ 2089], 20.00th=[ 2245], | 30.00th=[ 2376], 40.00th=[ 2507], 50.00th=[ 2606], 60.00th=[ 2769], | 70.00th=[ 2933], 80.00th=[ 3228], 90.00th=[ 3785], 95.00th=[ 5473], | 99.00th=[15139], 99.50th=[17695], 99.90th=[24773], 99.95th=[34866], | 99.99th=[74974] bw ( KiB/s): min=39056, max=104244, per=99.28%, avg=81170.23, stdev=3927.76, samples=240 iops : min= 9762, max=26058, avg=20291.15, stdev=981.90, samples=240 lat (msec) : 2=5.70%, 4=85.84%, 10=6.27%, 20=1.93%, 50=0.24% lat (msec) : 100=0.02%, 250=0.01% cpu : usr=2.22%, sys=2.66%, ctx=453148, majf=0, minf=38 IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=50.4%, 16=49.6%, 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=99.0%, 8=1.0%, 16=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,613237,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=64 Run status group 0 (all jobs): WRITE: bw=79.8MiB/s (83.7MB/s), 79.8MiB/s-79.8MiB/s (83.7MB/s-83.7MB/s), io=2395MiB (2512MB), run=30003-30003msec -
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,30 @@ #!/bin/bash TEST_DIR="/tmp/fio-test" mkdir -p $TEST_DIR # For macOS, use posixaio engine ENGINE="posixaio" echo "Testing with async I/O engine: $ENGINE" # Sequential tests (these are already good) fio --name=seq-read --rw=read --size=2G --bs=1M \ --numjobs=1 --time_based --runtime=30 \ --group_reporting --directory=$TEST_DIR fio --name=seq-write --rw=write --size=2G --bs=1M \ --numjobs=1 --time_based --runtime=30 \ --group_reporting --directory=$TEST_DIR # Random tests with proper async I/O fio --name=rand-read --rw=randread --size=2G --bs=4k \ --numjobs=4 --iodepth=64 --ioengine=$ENGINE \ --time_based --runtime=30 --group_reporting \ --directory=$TEST_DIR fio --name=rand-write --rw=randwrite --size=2G --bs=4k \ --numjobs=4 --iodepth=64 --ioengine=$ENGINE \ --time_based --runtime=30 --group_reporting \ --directory=$TEST_DIR rm -rf $TEST_DIR/*