You give very little information about your setup and the problem. - What kind of storage do you use? ( software or hardware raid? how many spindles? what kind of disks?) - Does it have battery backed cache? Is the battery on this cache OK? - How much IO, with how much latency, is generated on the hosts? ( run some diagnostics e.g. "iostat -mx 10" for a couple of minutes on a host ) - How much IO, with how much latency, is generated on the VMs? - Is IO on the host better than on the guest? How much? (test!) - What is the storage type of the storage domain? ( local FS? iSCSI? Fibre Channel? GlusterFS? ) - What type of IO controller do you use in the guest? ( IDE? virtio? virtio-scsi? ) - Do you use thin- or thick provisioned disks? - Do you use snapshots? On Wed, Feb 19, 2014 at 4:56 AM, Vishvendra Singh Chauhan <singh.exam@gmail.com> wrote:
Hi,
My network is 1 Gigabit. And i am using my each node in a separate cluster/DC.
And memory and processor uses are very low. Means when i run 30 vms then it's processor uses is 45% and memory uses is 35% around.
On Tue, Feb 18, 2014 at 2:14 PM, Dafna Ron <dron@redhat.com> wrote:
what is the network configuration? are you using each host with it's own cluster/DC as a local storage host? how many hosts are we talking about? what is the memory/cpu consumption on the hosts?
On 02/18/2014 01:18 AM, Vishvendra Singh Chauhan wrote:
Thanks Dafna,
I am Using Dell server Just as node, My manager is running on other machine. On each node we have 40 vm's running. and all most vm's has RHEL6 os. Now the problem about performance of vm's, when client is writing the data in vm, they are reporting, that they have very slow speed to write the data.
I also feel slow performance at writing speed in the vm's, So now please suggest, is any way to improve the writing speed in virtual machine's ?.
On Mon, Feb 17, 2014 at 2:40 PM, Dafna Ron <dron@redhat.com <mailto:dron@redhat.com>> wrote:
please give more information. what do you mean by storage performance? how many vm's are you running? are you using the Dell as just a host or is engine also installed on it?
On 02/17/2014 03:26 AM, Vishvendra Singh Chauhan wrote:
Hello Group,
Please help me out in storage issue in ovirt.
I am using Dell PowerEdge XD 720 servers, as node in Ovirt. Every node has 24TB storage space, so i am using all this space as the local storage in that.. But still i am facing the problem in storgae performance. My guests os are very slow to write the data.
So please give me, some tips using them i can increase the performance in storage.
-- /*Thanks and Regards.*/ /*Vishvendra Singh Chauhan*/
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-- Dafna Ron
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-- Dafna Ron
-- Thanks and Regards. Vishvendra Singh Chauhan (RHC{SA,E,SS,VA}CC{NA,NP}) +91-9711460593 http://linux-links.blogspot.in/ God First Work Hard Success is Sure...
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