Solved

Relationship between pages/sec, page faults/sec, and available MB

Posted on 2011-03-16
1
930 Views
Last Modified: 2012-08-14
On a Windows 2008 SP2 server, can someone explain the relationship between these three counters and what their thresholds should be?

Are there any other similar counters in perfmon we should take into account when troubleshooting a slow server?
0
Comment
Question by:bruce_77
1 Comment
 
LVL 21

Accepted Solution

by:
dan_blagut earned 500 total points
Comment Utility

"What is pages/sec performance counter ?"

The pages/sec performance counter is a memory related counter that measures the hard page faults. A hard page fault occurs when a memory page is not in the immediate memory and needs to be fetched from the disk. It is a very important counter that can potentially help us find bottlenecks. From my experience, a good warning threshold value for the pages/sec counter would be 10 and critical threshold value would be 20.

"What is page faults/sec performance counter ?"

The page faults/sec performance counter is also a memory related counter that measures the hard page faults and the soft page faults. A soft page faults occurs when the page is located in the immediate memory but still needs to fetch it for the current process. For example, Word has opened the spellchecker, and now Outlook wishes to use it, there is no need for another call to the disk as the spellchecker is already in memory. Zero is the optimum measurement and any mesurement higher then that delays the response time, however usually the value of the page faults/sec is at least twice the size of pages/sec.

Available MB

When the RAM is full, the server will use the swap file. The access time for RAM is at least 100 time smaller than HDD. So when a PC or server use more memory than RAM capacity it will be slow down...

Dan

0

Featured Post

Do You Know the 4 Main Threat Actor Types?

Do you know the main threat actor types? Most attackers fall into one of four categories, each with their own favored tactics, techniques, and procedures.

Join & Write a Comment

Suggested Solutions

Sometimes drives fill up and we don't know why.  If you don't understand the best way to use the tools available, you may end up being stumped as to why your drive says it's not full when you have no space left!  Here's how you can find out...
Great sound, comfort and fit, excellent build quality, versatility, compatibility. These are just some of the many reasons for choosing a headset from Sennheiser.
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…
This tutorial will walk an individual through the steps necessary to install and configure the Windows Server Backup Utility. Directly connect an external storage device such as a USB drive, or CD\DVD burner: If the device is a USB drive, ensure i…

772 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