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kinmun
kinmun
New Member
December 12, 2015
Question

FG300D memory usage

  • December 12, 2015
  • 1 reply
  • 7715 views

my FG300D firewall memory starts to go above 70% these few days?

such I be concerned 

it used to hover around 60-65%.

should I clear logs on the FG300D or do some housekeeping ???

 

the below alert is from my monitoring system.

 

Trigger: Memory usage exceeded 70%

Trigger status: PROBLEM

Trigger severity: Average

Trigger URL: 

Item values:

 

1. System Memory Usage(%) (Fortigate300D:fgSysMemUsage): 71 %

    1 reply

    rpedrica
    rpedrica
    Visitor III
    December 12, 2015

    Hi @kinmun

     

    There is some important info you haven't told us:

     

    How long has the unit been running for ( uptime )?

    Have you made changes are add policies with security profiles recently?

    Have you enabled any additional features like VPN, vuln scan or device ident?

    Has your traffic through the unit increase ( eg. sessions or users )?

     

    Generally, changes in config will cause fluctuations in memory usage so this may be expected or not. Try to work our if changes have happened between mem=60% and mem=70%.

     

    The FGs are normally Ok up to 75% memory but thereafter you might get into conserve mode with some disabled features.

    ede_pfau
    SuperUser
    ede_pfau
    SuperUser
    December 12, 2015

    Which version of FortiOS are you running? Have you checked if there is an update, and (in the Release Notes) if there are issues resolved concerning the memory usage?

    With UTM, you can burn any amount of memory. Check your IPS settings, for instance that you don't enable ALL signatures at once.

    kinmun
    kinmunAuthor
    New Member
    December 13, 2015

    my firmware is 5.2.2 and have been running for 300 days.

    recent changes is to allow some online radio websites which were being blocked as p2p traffic.

    no other changes made.

     

    any commands i can use to check what are causing the spike in memory usage??

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