[Discuss] [one-users] question about OpenNebula + NFS performance

Nikolay Gar nikolay.gar at gmail.com
Sun Feb 26 03:31:01 PST 2012


nfsstat from client and nfs server will help:

1. nfsstat -n -c for client
2. nfsstat -n -s for server

Just for test, do not test it on VM machine , simple copy some file over
NFS ( some big file not /dev/null some 5 GB) with time command before test


Nikolay

2012/2/26 Ñî D <yang_yi at neusoft.com>

> Hi****
>
> ** **
>
>    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.****
>
>    the nfs server(NAS) is suse10 with nfs version 3.****
>
> ** **
>
>    the nfs client is rhel6.1****
>
> mount -t nfs -o timeo=10,noatime,intr,hard,retrans=5 172.16.14.115:/vx/B1ALL
> /one_images****
>
> ** **
>
> 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.****
>
> So I wonder if the nfs can provide better performance for the vm ?****
>
> How can I tune the nfs server and client parameters to enhance nfs
> performance ? Thank you very much.****
>
> ** **
>
> [image: ˵Ã÷: cid:image003.jpg at 01CCF484.269633A0]****
>
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