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  • 1.  NAS probe memory utilization

    Posted May 15, 2017 08:41 AM

    Hi,

     

    NAS probe is utilizing more memory near than 2 GB. Every time I need to restart probe to fix it. Any suggestions to investigate and fix this issue.

    Please help.



  • 2.  Re: NAS probe memory utilization

    Broadcom Employee
    Posted May 15, 2017 09:09 AM

    Hi,

    When the NAS probe memory increase this is often times related to a problem synchronizing the local SQL site database with the back end database.

     

    You can check this by highlighting the nas probe then doing ctrl + P to bringing up the probe utility.

    in the drop down choose get_info

    under the parameters highlight details and but in a value of 1

    then hit the green arrow

     

    scroll to the bottom and you will see nis-bridge  and queue_len.

     

    in perfect condition this should be low or 0

    if you have 100K + there is a performance issue on the back end database

     

    Things you can do

    1) make sure the dba is indexing all tables nightly including the nas_ tables

    2) check the nas_alarms, nas_transaction_log and nas_transaction_summary tables and see if they are holding more data then they should be per your retention period in nas setup.

    3) deactivate alarm_enrichment and nas then drop the nas_* tables from the back end SQL server then activate A_E and nas and let them recreate.

     

    Hope this helps.



  • 3.  Re: NAS probe memory utilization

    Posted May 16, 2017 08:51 AM

    You don't mention your version but on the hotfix page there is a nas release newer than what's in 8.5.1 GA. There are a number of critical fixes in that HF so it's worth applying if your version compatible. 

     

    -Garin



  • 4.  Re: NAS probe memory utilization

    Posted May 16, 2017 08:53 AM

    Hi

     

    Version is 8.4.

     

    On 16-May-2017 6:22 PM, "Garin" <communityadmin@communities-mail.ca.com>



  • 5.  Re: NAS probe memory utilization

    Posted May 16, 2017 10:19 AM

    You might want to check out this article as well:

    Tech Tip: Alarm Enrichment probe not processing alarms 

     

    Went thru a slew of nas issues with alarms stopped flowing and this helped. I now have a processes nas profile setup to keep track of the nas and how much memory is consumes. I never see it go above 300MB.

     

    Add the following nas and hub settings:

    Nas:
    <setup> 
    lower_memory_usage_threshold_percentage = 0.90
    upper_memory_usage_threshold_percentage = 0.90
    memory_usage_exceeded_threshold = 3
    </setup>

     

     

    Hub:
    <hub>
    post_max_age = 60
    </hub>