Hi.. Does anyone have any ideas how to speed up CentOS when its running as a guest OS under VMWare server??
It seems to be really slow...
WipeOut wrote:
Hi.. Does anyone have any ideas how to speed up CentOS when its running as a guest OS under VMWare server??
It seems to be really slow...
Give it more RAM, put the disk image on a faster drive. All the things that apply to real systems still have the same effects.
On 3/31/07, Les Mikesell lesmikesell@gmail.com wrote:
Give it more RAM, put the disk image on a faster drive. All the things that apply to real systems still have the same effects.
I gave it 1 Gb and vmfs is on SCSI RAID 0 (test node), oldish but not too much 2/2x2.88 Xeon PowerEdge that runs 2 moderatly loaded 4-node W2003 clusters with MS SQL quite well. A single instance of CentOS 4.4 on the same ESX 2.5.4 is quite a load already. Everything is slow. Right now I am reading docs trying to find ways to tune it up. The only advice from this rookie is to backup the gold master before you crash it by updating to a new kernel or install VM Tools from a newer WS or Server. Those are reported to be peppier with RHEL than the ones from ESX.
WipeOut wrote:
Hi.. Does anyone have any ideas how to speed up CentOS when its running as a guest OS under VMWare server??
It seems to be really slow...
Did you install vmware tools? if not, do so immediately, and expect a HUGE performance increase.
note you need to re-run the vmtools setup script each time you update your centos kernel.
On 3/31/07, WipeOut wipe_out@users.sourceforge.net wrote:
Hi.. Does anyone have any ideas how to speed up CentOS when its running as a guest OS under VMWare server??
It seems to be really slow... _______________________________________________
Multiple steps:
1) Install the vmware tools for the system. That increases performance greatly as vmware can then start caching memory better
2) I found that not using LVM increases performance
On 3/31/07, Stephen John Smoogen smooge@gmail.com wrote:
- I found that not using LVM increases performance
thank you very much, this worked quite a miracle
Hi.. Does anyone have any ideas how to speed up CentOS when its running as a guest OS under VMWare server??
Apart from installing the vmware tools, another recommedation I have read is to disable dual CPU within the VM and use only one. Haven't had a chance to test it myself yet, my vmware machine is being repaired.
Gabriel
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Also, allocate at least 512MB of RAM for the emulated OS. Anything less tends to give poor performance (even though the default is 256MB).
JC
On 4/2/07, first last prelude_2_murder@yahoo.co.uk wrote:
Hi.. Does anyone have any ideas how to speed up CentOS when its running as a guest OS under VMWare server??
Apart from installing the vmware tools, another recommedation I have read is to disable dual CPU within the VM and use only one. Haven't had a chance to test it myself yet, my vmware machine is being repaired.
Gabriel
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first last wrote:
Apart from installing the vmware tools, another recommedation I have read is to disable dual CPU within the VM and use only one. Haven't had a chance to test it myself yet, my vmware machine is being repaired.
I can second this. I changed a Centos VM today back to one CPU from using two. The VM now seems to running much better. I have read elsewhere that virtual SMP exacts a not inconsiderable performance penalty since it only a new feature and is still under development.
Jeffrey Bird
is this one a machine with hardware VT being slow...non VT or across the board?
Jeffrey Bird wrote:
first last wrote:
Apart from installing the vmware tools, another recommedation I have read is to disable dual CPU within the VM and use only one. Haven't had a chance to test it myself yet, my vmware machine is being repaired.
I can second this. I changed a Centos VM today back to one CPU from using two. The VM now seems to running much better. I have read elsewhere that virtual SMP exacts a not inconsiderable performance penalty since it only a new feature and is still under development.
Jeffrey Bird _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
On 02/04/2007, at 9:41 PM, William Warren wrote:
is this one a machine with hardware VT being slow...non VT or across the board?
It really was only the one VM. The VM server is ESX 2.5.3, so as far as I know it does not use any of the processor virtualisation assistance. That said,the server has two dual core Opteron 275s. I am unsure if these are recent enough to have the VT/Pacifica stuff in them.
Jeffrey Bird
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Dhivan Djaganu -
first last -
Jeffrey Bird -
John R Pierce -
Johnny Hughes -
Justin Cataldo -
Les Mikesell -
Stephen John Smoogen -
William Warren -
WipeOut