Re: [Xen-users] QOS for NFS backed disks / VM lags with high IO?

[Nathan March <nathan@xxxxxx>]

On 10/19/2011 3:51 PM, Nathan March wrote:
> It doesn't affect other Dom0's and then netapp stats show low usage, 
> so seems to be a nfs client issue.... nfsstat shows 0 retrans and I am 
> using jumbo frames.
> Mounting with: 
> rw,nosuid,noatime,nfsvers=3,tcp,rsize=32768,wsize=32768,bg,hard,intr
Just to add, I've cranked up the wmem/rmem buffers considerably with no 
improvement:
net.core.rmem_default = 20971520
net.core.wmem_default = 20971520
net.core.rmem_max = 20971520
net.core.wmem_max = 20971520
net.ipv4.tcp_rmem = 4096 87380 20971520
net.ipv4.tcp_wmem = 4096 65536 20971520
net.ipv4.tcp_mem = 8388608 12582912 20971520
net.ipv4.udp_mem = 8388608 12582912 20971520

- Nathan

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users