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  • 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
    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
    jsjcloud20   32088M   763  97 61169  13 34234   6  1541  78 110327   7 284.7  11
    Latency             39625us    7351ms    3251ms   24187us     102ms     190ms
    
    Version  1.96       ------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
    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
    hadoop1         16G   739  96  28405  7 18972   5  3841  96 83858  13 188.9  12
    Latency             13992us     873ms   6533ms    18113us   93496ms     291ms
    
    Version  1.96       ------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
    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
    hadoop2         16G   599  89  2601   1 11303   6  3168  94 45889   7 156.6 2191
    Latency             18105us   20413ms    8228ms   61058us     144ms     316ms
    
    Version  1.96       ------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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  • 原文地址:https://www.cnblogs.com/heidsoft/p/3926938.html
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