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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'>Hi<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'> I set up virtual machine with OpenNebula2.2 + NFS(NAS Huawei Symantec). And the virtualization environment is rhel6.1 + kvm. But the vm is running very slow. In the vm system, gunzip a gz file takes very long time.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'> the nfs server(NAS) is suse10 with nfs version 3.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'> the nfs client is rhel6.1<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt;color:red'>mount -t nfs -o timeo=10,noatime,intr,hard,retrans=5 172.16.14.115:/vx/B1ALL /one_images</span><span lang=EN-US style='font-size:12.0pt'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'>I tried to install two img systems at the same time on the nfs, the %CPU is high. and the installation progress takes very long too.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'>So I wonder if the nfs can provide better performance for the vm ?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'>How can I tune the nfs server and client parameters to enhance nfs performance ? Thank you very much.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:12.0pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><img width=554 height=222 id="图片_x0020_5" src="cid:image001.jpg@01CCF4AF.485EAC80" alt="说明: cid:image003.jpg@01CCF484.269633A0"><o:p></o:p></span></p></div><font face="monospace">---------------------------------------------------------------------------------------------------<br>
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