Performance
測量和基準測試已掛載的 NFS 共享上文件訪問的速度和延遲
我有一個掛載一些 NFS 共享的 Linux Centos 系統,當從該共享讀取和寫入文件時,我可以使用什麼技術來測量 I/O 速度/延遲/速率?這種技術是否也可以應用於本地硬碟驅動器以進行比較?
從該共享讀取和寫入文件時,我可以使用什麼技術來測量 I/O 速度/延遲/速率?
您可以使用它
dd
來執行此操作:# time dd if=/dev/zero of=/mnt/nfs/testfile bs=16k count=128k 131072+0 records in 131072+0 records out 2147483648 bytes (2.1 GB) copied, 111.656 seconds, 19.2 MB/s real 1m51.678s user 0m0.066s sys 0m1.482s
# time dd if=/mnt/nfs/testfile of=/dev/null bs=16k 131072+0 records in 131072+0 records out 2147483648 bytes (2.1 GB) copied, 4.96762 seconds, 432 MB/s real 0m4.969s user 0m0.046s sys 0m0.720s
(文件大小 =
bs * count
應該是 RAM 的兩倍)# bonnie++ -d /mnt/nfs/bonnie/ -s 2048 -r 1024 -u 0 Using uid:0, gid:0. Writing a byte at a time...done Writing intelligently...done Rewriting...done Reading a byte at a time...done Reading intelligently...done start 'em...done...done...done...done...done... Create files in sequential order...done. Stat files in sequential order...done. Delete files in sequential order...done. Create files in random order...done. Stat files in random order...done. Delete files in random order...done. Version 1.96 ------Sequential Output------ --Sequential Input- --Random- Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP svr201NTC-647.lo 2G 1473 96 46620 3 48033 4 1785 99 3525478 100 +++++ +++ Latency 8647us 86us 268us 5064us 66us 23566us Version 1.96 ------Sequential Create------ --------Random Create-------- svr201NTC-647.local -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete-- files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP 16 580 2 5742 13 429 2 423 1 7540 12 392 1 Latency 244ms 22747us 4549ms 3849ms 1641us 999ms 1.96,1.96,svr201NTC-647.localdomain,1,1319514624,2G,,1473,96,46620,3,48033,4,1785,99,3525478,100,+++++,+++,16,,,,,580,2,5742,13,429,2,423,1,7540,12,392,1,8647us,86us,268us,5064us,66us,23566us,244ms,22747us,4549ms,3849ms,1641us,999ms
# iozone -aRcU /mnt/nfs/ -f /mnt/nfs/testfile > logfile
更多詳情: http: //nfs.sourceforge.net/nfs-howto/ar01s05.html
這種技術是否也可以應用於本地硬碟驅動器以進行比較?
當然,您可以使用它來對本地硬碟進行基準測試以進行比較。