VMware ESXi 挂载 iSCSI 和 NFS 性能测试

  iSCSI-target和NFS Server由一台Raid10(4*2.5′ 10Krpm 146GB)的VMware ESXi 3.5里的FreeBSD服务机提供,在另一台Raid1(2*3.5′ 15Krpm 146GB)的VMware ESXi 3.5里挂载iSCSI和NFS,然后分别以虚拟磁盘添加入FreeBSD测试机中。使用/usr/local/bin/iozone -i 0 -i 1 -i 2 -r 1024 -s 1G -t 2 -C测试。测试结果如下:
  iSCSI测试:
Initial write = 5443.42 KB/sec
Rewrite = 4840.85 KB/sec
Read = 19823.13 KB/sec
Re-read = 19298.97 KB/sec
Random read = 44114.65 KB/sec
Random write = 4024.72 KB/sec

  NFS测试:
Initial write = 952.76 KB/sec
Rewrite = 975.36 KB/sec
Read = 14782.20 KB/sec
Re-read = 16085.16 KB/sec
Random read = 41878.42 KB/sec
Random write = 794.31 KB/sec

  CPU占用率上NFS只有iSCSI的一半,服务机和测试机都差不多。iSCSI时CPU占用率为15%左右,中间还有一段是30%多。NFS时基本都8%左右。两台机器均为2*Intel E5405,分配给虚拟机2个核。

  测试机直接加载NFS测试:
Initial write = 2361.99 KB/sec
Rewrite = 2130.92 KB/sec
Read = 17595.85 KB/sec
Re-read = 18904.29 KB/sec
Random read = 13139.79 KB/sec
Random write = 2001.82 KB/sec

  测试机本地测试:
Initial write = 8233.32 KB/sec
Rewrite = 12511.68 KB/sec
Read = 34969.73 KB/sec
Re-read = 34179.26 KB/sec
Random read = 82272.52 KB/sec
Random write = 4620.50 KB/sec

  服务机本地测试:
Initial write = 6236.64 KB/sec
Rewrite = 9016.30 KB/sec
Read = 47051.42 KB/sec
Re-read = 47444.12 KB/sec
Random read = 27243.86 KB/sec
Random write = 3251.88 KB/sec

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