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Anthony's avatar
Anthony
Icon for Nimbostratus rankNimbostratus
Nov 24, 2015

High memory usage and sweeper aggressive mode activated

Hi all, my active F5 (5000) is currently consuming 83% memory usage, which is just climbing into the Red! 

 tmsh show sys memory | head
Sys::System Memory Information
Memory Used(bytes)  Current Average Max(since 11/24/15 05:58:09)
Total Phys Memory   31.4G   31.4G   31.4G
OS Used Memory      30.4G   30.4G   30.5G
TMM Alloc Memory    14.9G   14.9G   14.9G
TMM Used Memory     10.5G   10.5G   10.5G
OS Used Swap        0       0       0

I have also noted a large number of the following messages appearing in the ltm log file.

Nov 24 08:56:15 juno warning tmm[13816]: 011e0002:4: sweeper_update: aggressive mode activated. (3333640/3921920 pages)
Nov 24 08:56:15 juno warning tmm[13816]: 011e0002:4: sweeper_update: aggressive mode deactivated. (3333566/3921920 pages)

I run LTM/ASM/APM on the F5's and quite a few iRules.

Can someone please share some advice on how I can reduce the memory consumption?

Many thanks,

Anthony

application delivery
LTM
TMSH

2 Replies

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  • Hannes_Rapp's avatar
    Hannes_Rapp
    Icon for Nimbostratus rankNimbostratus
    Nov 24, 2015

    Disable:

     

    Local logging (iRules), Local logging (ASM) - the biggest memory consumer of all

     

    Reduce High Idle T/O values:

     

    TCP idle timeout, Persistency timeout

     

    If your memory usage was significantly less just a few days ago, and you believe there's no reason for such high memory usage, open a support case with F5.

     

  • Anthony's avatar
    Anthony
    Icon for Nimbostratus rankNimbostratus
    Nov 24, 2015

    ok, I've removed one of the large logging iRules, but don't think this is going to make a difference.

     

    I'm interested by the ASM logging though - We are being hammered on one of our policies so I'm hoping that if we can supress these requests we can bring the memory down. When you say Local loggin (ASM) do you just mean the default logging to the asm log file?

     

    Many thanks for the quick reply.

     

    Anthony