KVM下raw和qcow2格式磁盘文件IO测试
1. Host OS 环境[*]CPU: Intel Xeon E5620 2.40GHz
[*]MEM: 16GB
[*]DISK: 500GB SATA
[*]OS: CentOS5.7 64bit
2. Guest OS 环境
[*]CPU: 2 core
[*]MEM: 8GB
[*]DISK: 50GB raw/qcow2 virtio
[*]OS: Ubuntu 10.04.3 Server 64bit
3. 测试工具
Bonnie++ 1.96
测试命令：bonnie -b -u root -d /root/tmpfile/
4. 测试结果
Host OS
Version1.96 ------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
jsjcloud20 32088M 76397 6116913 34234 6154178 110327 7 284.711
Latency 39625us 7351ms 3251ms 24187us 102ms 190ms
Version1.96 ------Sequential Create------ --------Random Create--------
jsjcloud20 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files/sec %CP/sec %CP/sec %CP/sec %CP/sec %CP/sec %CP
16 56 0 +++++ +++ 57 0 57 0 +++++ +++ 57 0
Latency 1016ms 895us 258ms 233ms 15us 233ms
Guest OS : raw virtio
Version1.96 ------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
hadoop1 16G 73996284057 18972 5384196 8385813 188.912
Latency 13992us 873ms 6533ms 18113us 93496ms 291ms
Version1.96 ------Sequential Create------ --------Random Create--------
hadoop1 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files/sec %CP/sec %CP/sec %CP/sec %CP/sec %CP/sec %CP
16 38 0 +++++ +++ 53 0 38 0 +++++ +++ 53 0
Latency 358ms 815us 1683ms 192ms 2205us 1733ms
Guest OS : qcow2 virtio
Version1.96 ------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
hadoop2 16G 599892601 1 11303 6316894 45889 7 156.6 2191
Latency 18105us 20413ms 8228ms 61058us 144ms 316ms
Version1.96 ------Sequential Create------ --------Random Create--------
hadoop2 -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files/sec %CP/sec %CP/sec %CP/sec %CP/sec %CP/sec %CP
16 37 0 +++++ +++ 49 0 37 0 +++++ +++ 53 0
Latency 338ms 743us 1797ms 421ms 2768us 1329ms
综合
字符写block写重写字符读block读随机访问
Host
763
61169
34234
1541
110327
284.7
raw virtio
739
28405
18972
3841
83858
188.9
qcow2 virtio
599
2601
11303
3168
45889
156.6
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