[one-users] 答复: question about OpenNebula + NFS performance

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I copy a 32G file from and to the nfs directory and duration is as below.

 

# time cp LX5.5V0.9.img LX5.5V1.1.img

 

real    13m54.425s

user    0m4.155s

sys     0m18.556s

 

client is here , I haven¡¯t got the server¡¯s result, NAS engineer is not
here.

# nfsstat -n -c

Client nfs v3:

null         getattr      setattr      lookup       access       readlink


0         0% 21        0% 0         0% 38        0% 9         0% 0
0% 

read         write        create       mkdir        symlink      mknod


1009154  87% 150378   12% 1         0% 0         0% 0         0% 0
0% 

remove       rmdir        rename       link         readdir      readdirplus


3         0% 0         0% 0         0% 0         0% 0         0% 5
0% 

fsstat       fsinfo       pathconf     commit       

5         0% 2         0% 1         0% 72        0%

 

 

Best Regards,

Yang Yi(Ñî D)

Mobile Internet Division

˵Ã÷: ˵Ã÷: cid:image001.jpg at 01CBF9FF.3CC03FC0

Neusoft Corporation

A6 Bldg. No.2 Xin Xiu Street

Hun Nan New District, Shenyang 110179 P.R.C.

Mobile: +86-186 2407 4299

E-mail: yang_yi at neusoft.com

http://www.neusoft.com <http://www.neusoft.com/> 

 

·¢¼þÈË: Nikolay Gar [mailto:nikolay.gar at gmail.com] 
·¢ËÍʱ¼ä: 2012Äê2ÔÂ26ÈÕ 19:31
ÊÕ¼þÈË: Ñî D
³­ËÍ: users at lists.opennebula.org; discuss at lists.opennebula.org
Ö÷Ìâ: Re: [one-users] question about OpenNebula + NFS performance

 

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.

 

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