Solved

1 vs 2 processors in HP DL380P for Virtualization

Posted on 2013-12-05
7
360 Views
Last Modified: 2013-12-09
Hello folks,

I'm trying to figure out which CPU configuration would give me the best performance and an HP server. All else being equal, would two 4 core 2.5 GHz processor be better than one 8 core 2.5 GHz processor in terms of overall performance? I am running six virtual machines using ESXI on this physical server host including two database servers doing lightweight database crunching. Thanks.
0
Comment
Question by:JohnnyD74
7 Comments
 
LVL 14

Accepted Solution

by:
RickEpnet earned 500 total points
ID: 39700199
Everything else being equal I would opt for 2 physical CPU's

For Example I would have 2
HP DL380p Gen8 Intel® Xeon® E5-2637v2 (3.5GHz/4-core/15MB/130W) Processor Kit      715228-B21

Over a Single
HP DL380p Gen8 Intel® Xeon® E5-2667v2 (3.3GHz/8-core/25MB/130W) Processor Kit      715226-B21

Both these run at the same memory speed and have close to the same MHz.

You talked about 2.5 GHz CPU. In that range on the Gen 8 server there is a big difference in the 4 Core and the 8 Core 2.6 GHz. One run the memory at 1333MHz and the other run the memory at 1866Mhz. So there everything is not equal.

There is the matter of upgrade you have to think of too. It is much easier to upgrade a single CPU machine than a multi and cheaper too.

There are may factors you have to look at but I think over all I would rather have 2 4 Core over 1 8 core everything being equal.
0
 
LVL 42

Expert Comment

by:paulsolov
ID: 39700221
2 CPUs period

The memory on the HP DL servers is balanced accordingly to CPU so you will only be limited in the number of memory you can place in the server.  If you reach a certain limit you would not only need to buy memory but the CPU kit as well which will cost you more in the long run as it may no longer be available readily

NOTE:
If only one processor is installed, only 12 DIMM slots are available.  Memory is usually the chokepoint and is cheap, get the 2 CPUs now and you don't have to worry later
0
 

Author Comment

by:JohnnyD74
ID: 39700227
Thank so much Rick! The buget allows for the E5-2609v2 2.5GHz processor which as you said, runs the memory bus at 1333 MHz. If I were to upgrade to a processor with a 1600 MHz memory bus, like the 2.6 GHZ E5-2630v2, do you think it would make a big performance diffence for our SQL database app?
0
U.S. Department of Agriculture and Acronis Access

With the new era of mobile computing, smartphones and tablets, wireless communications and cloud services, the USDA sought to take advantage of a mobilized workforce and the blurring lines between personal and corporate computing resources.

 
LVL 118
ID: 39700279
Purchase the server with the higher clock speeds.

We've just purchased servers with 10 Core E5-2697v2 3.0GHz, rather than the 12 Core, which is clocked lower!
0
 
LVL 14

Assisted Solution

by:RickEpnet
RickEpnet earned 500 total points
ID: 39700299
A big difference NO. Would there be a difference yes.  
Your biggest boost for SQL would most likely come from how fast your disks are and what raid configuration you use.
0
 
LVL 19

Expert Comment

by:compdigit44
ID: 39707224
I have read article online stating that you should not allocate more vCPU to a VM than you have CPU Cores in the Host. Otherwise the VM would need to span the memory bank of another CPU... I believe it has to do with NUMA..

Just some food for thought
0
 
LVL 14

Expert Comment

by:RickEpnet
ID: 39707244
Always start with 1 CPU and if you need more add more but you can slow down VMs by adding too many vCPUs. If you can keep the amount of vCPUs on ALL your  VMs lower than your QTY logical processors you will be better off.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Restoring deleted objects in Active Directory has been a standard feature in Active Directory for many years, yet some admins may not know what is available.
In this article, I will show you HOW TO: Suppress Configuration Issues and Warnings Alert displayed in Summary status for ESXi 6.5 after enabling SSH or ESXi Shell.
This tutorial will walk an individual through locating and launching the BEUtility application and how to execute it on the appropriate database. Log onto the server running the Backup Exec database. In a larger environment, this would generally be …
This tutorial will walk an individual through configuring a drive on a Windows Server 2008 to perform shadow copies in order to quickly recover deleted files and folders. Click on Start and then select Computer to view the available drives on the se…

920 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now