Just as a quick shot: You really may want to check which IO scheduler runs inside the vm. you probably want deadline or noop instead of CFQ, which can have a huge performance impact inside the vms. you can check the default scheduler with: dmesg | grep scheduler you should get an output similar to this: [ 0.841989] io scheduler noop registered [ 0.841990] io scheduler deadline registered (default) [ 0.842028] io scheduler cfq registered HTH Am 19.02.2014 12:15, schrieb Itamar Heim:
On 02/19/2014 10:48 AM, Dafna Ron wrote:
Actually, I meant how is the network configured rhevm side? are all vm's writing on rhevm interface? Itamar, Should local storage be used this way in rhevm?
I see no issue using ovirt to manage standalone hosts with their local storage. network isn't a factor in this case. how many spindles on the host? what is the load on the disks you see at host level? which vdisk type are you using (ide/virtio-block/virtio-scsi)?
On 02/19/2014 03:56 AM, Vishvendra Singh Chauhan 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 <mailto: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> <mailto: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
-- /*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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