help - vm to 100% with Betclic resources cpu, but the ESX host to 15% cpu

Hi all

5 * HP BL460c Blade each with two Quad Core Xeon E5450 and and 8 GB of RAM.

ESX 3.5

VirtualCenter 2.5.0

DRM and active HA.

I need assistance with resource pools. Currently I have them all together for:

  • expandable

  • unlimited

for the CPU and memory. I tried without reserve and with reservations, and it is indifferent to the result.

I'm running a server SQL2008 (2 * vCPU, 3.5 GB of RAM) which is pretty hard. and from time to time the cpu usage spikes to 100% (6 GHz) and saturate at this time here. When I go to the graphs of the ESX host, I see up to 3 physical processes responsible... and all the others are dormant...

I'm working on why he no longer not affected resources of the ESX host. I thought that because of the resource sharing (unlimited), he could catch resource from the pool of resources of the parent (unlimited). And our Installer is very very little used - so much processing power/mem available spare parts.

I have also some really stupid questions:

  • with SMP, 1 vCPU means only 1 pCPU host is used?
    I never thought that this true, but in this example, it seems that only 2 pCPUs on the host are used... maybe 3,.., it is difficult to tell from the graph

  • a virtual machine can use more resources from a host at the same time?

with SMP, 1 vCPU means only 1 pCPU host is used?

I never thought that this true, but in this example, it seems that only 2 pCPUs on the host are used... maybe 3,.., it is difficult to tell from the graph

Yes, assign you a resource equivalent to a virtual machine to the host.  Therefore, if you assign 1 vCPU which is equivalent to a unique Jepp on the host computer in the slot.

a virtual machine can use more resources from a host at the same time?

No. a resource pool is on a cluster, but VM inside this POOL can only use a single host resources.  The case is from ESX can use DRS to load balancing force of the VM, the pool determines the overall consumption and that you assign VM accordingly.  But ESX is not yet there to physical resource take other hosts.  What ever host is on, it is that the only place these resources can be achieved.

What process the SQL 2008 taking up the CPU process?  I think it's SQL Server, in which case it is not that you can do.  One of the reasons that I discourage using VM for SQL, SQL works not virtualized.

Tags: VMware

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