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Re: [Xen-users] QOS for NFS backed disks / VM lags with high IO?
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| Subject: | Re: [Xen-users] QOS for NFS backed disks / VM lags with high IO? |
| From: | Nathan March <nathan@xxxxxx> |
| Date: | Wed, 19 Oct 2011 16:33:03 -0700 |
| Delivery-date: | Wed, 19 Oct 2011 16:34:37 -0700 |
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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 |
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