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How to control swap space or paging space in BO 4.1(Server)

Hi All,

I hope you doing well!!

I would like to know about paging space(swap space).

Paging space grown up 83% when i saw last night it was 2% i just wondering why it is grown up high with in short period and we got high alert mail and sev-2 incident for this.

Procedure which i followed

Re-started the application then paging space back to normal position 5%

what is the main reason for high space utilized in the server and I am looking root cause analysis for this cause.


it would be great if you reply ASAP.

Please advise..

Thanks in advance...

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  • Posted on Jul 21, 2016 at 12:14 PM

    it would be really useful if you provide some content, like OS, product used, what files were in swap space, what env variables you have set for temp/swap etc...

    Based on what you have said - your product was busy, possibly running out of memory and started swaping to swap... or was just busy doing something that required temp/swap space.

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    • Former Member stefen jay

      Hi,

      Simply, page file (virtual memory) acts as a physical memory (RAM) in the server to avoid heavy usage of RAM. When you restart the server, this memory is refreshed like RAM. Virtual memory is allocated in the hard disc of the server. Normally, you need to set virtual memory like 1.5 times of RAM. To see how much virtual memory is allocated in your WINDOWS server, please follow the steps.

      1. Right click on my computer

      2. Click advanced system settings

      3. Select Advance --> Settings (Under Performance tab)

      4. Click on advanced

      5. Click "change" to view and change the size of virtual memory (page file)

      Note: You can increase the size of page file online (means no restart of server is required), for reducing the size, a restart is required.

      For more about virtual memory (Copied from some other thread)

      Memory page is a term related to virtual memory. Virtual memory is an Operating system(OS) provided feature. All modern age programs ask the OS for a lot of memory(even though it doesn't need so much at that point, it sort of anticipate that I might need more in future). So, what happens is, the physical memory(RAM), finishes fast. When all available memory is allocated, OS can no longer run more programs. Because of that problem, OS developers came up with this rather clever idea of virtual memory. It allows you to dedicate a portion of your hard disk to be treated as RAM. That might sound strange, but remember a lot of memory often is allocated but is not used. OS has clever algorithms to page this less used / unused memory to the disk(remember access to RAM is faster than Disk), so that active area of the allocated memory stays in RAM.

      Regards,

      Ganesan

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