Had you installed windows virtio drivers when you created the template? To speed the performance of the windwos family up, whlie using KVM, take a look at this site: http://www.linux-kvm.org/page/WindowsGuestDrivers/Download_Drivers.
2013/7/8 WXR <[email protected]> > use kvm as hypervisor. > use the default medium instance compute offering. > > > > > ------------------ Original ------------------ > From: "CSG - Ashley Lester"<[email protected]>; > Date: Mon, Jul 8, 2013 03:25 PM > To: "[email protected]"<[email protected]>; > > Subject: RE: vm's disk io performance declines quickly after > beingcreated0.5-1 hours later. > > > > Whats the hypervisor is use ? XenServer has some pretty bad driver issues > for a while.. > > -----Original Message----- > From: David Comerford [mailto:[email protected]] > Sent: July-08-13 1:57 AM > To: [email protected] > Subject: Re: vm's disk io performance declines quickly after being > created0.5-1 hours later. > > What kind of compute Service Offering are you using for the instance? > There may be some painfully restrictive settings in there. > > Best regards, > David Comerford > Mobile: +353 87 1238295 > Email: [email protected] > Website: http://dave.ie > GPG key: http://pgp.dave.ie > > > On 7 July 2013 05:07, WXR <[email protected]> wrote: > > > The host node has 96GB ram and 2 E5-2620 cpus.There is just one vm for > > test on this node. > > The storage node is just only working for the host node. > > > > I don't know if cloudstack has some default resource limit policies. > > I don't think workload is the reason.There may be a system feature > > which cause this issue,about cloudstack,or kvm,or windows system,or > > storage device,or something else. > > Does any one have relevant experience in dealing with this issue? > > > > > > > > ------------------ Original ------------------ > > From: "David Comerford"<[email protected]>; > > Date: Sun, Jul 7, 2013 05:43 AM > > To: "users"<[email protected]>; > > > > Subject: Re: vm's disk io performance declines quickly after being > > created0.5-1 hours later. > > > > > > > > Doesn't sounds like a CloudStack problem. > > Spin up a Linux instance and see does it have the same problem. > > > > Then apply some science and check I/O inside the instance. Then I/O on > > the primary storage device. > > Keep an eye on the storage NICs too. > > > > Does you host have enough RAM? Maybe it's booting up in main memory > > and starting to swap over the hour. > > > > Best regards, > > David Comerford > > Mobile: +353 87 1238295 > > Email: [email protected] > > Website: http://dave.ie > > GPG key: http://pgp.dave.ie > > > > > > On 6 July 2013 10:56, WXR <[email protected]> wrote: > > > > > I create a windows 2003 server enterprise 32bit vm template. > > > When I use this template to create a vm instance and start the > > > vm.The > > disk > > > io performance is normal,it just takes 5 seconds to copy a 200MB > > > file.And other files/directories copy jobs are very fask. > > > > > > But 0.5-1 hours later,the vm need serveral minutes to copy a 200MB > > > file,and all other files copy job become very slow. > > > > > > I don't know if it is an issue of windows 2003 vm template,or > > > cloudstack configuration,or storage configuration. > > > Does anyone meet the same issue? > > > > .
