How can be calculated for the number of VSAPI Scanning Scan Processes and number Threads?


We use the Symantec Mail Security 6.5.x, are using windows server 2003 R2 Standard 64bit SP2 serverr.

The Exchange server 2007 64bit (version 8.1.240.0).

Dell PowerEdge servers 2950 64xbased PC, the system with two Quad Core CPUs and SMS scanning threads set to 9, the number of threads is 9.

VSAPI_Threads

After use, just as with spam, antivirus, your Exchange server has many outgoing queue, the system runs very slowly.
I realize there are 9 lines SAVFMSESP.EXE process in the list of Task management is handled.
– All CPU 9% of this process are approx 13%.
– A total of approx 99% CPU.
I refer to link: http://www.symantec.com/business/support/index?page=content&id=TECH84498 and

http://www.symantec.com/business/support/index?page=content&id=TECH84394&actp=search&viewlocale=en_US&searchid=1334222349506

the calculation of VSAPI and number of threads.
According to you, the system can calculate the right VASPI, of Threads? if necessary down to Symantec Mail Security for Exchange runs a more optimal and then how?

Thanks and Regards,

Thang.Le

About thangletoan

Hallo Aloha

Posted on 12/04/2012, in Bảo mật, Công nghệ và Giáo dục, Chính sách CNTT, SMSE, Symantec Mail security for Exchange. Bookmark the permalink. 2 phản hồi.

  1. As described in the second

    As described in the second link you provided (http://www.symantec.com/docs/TECH84394 ):

    The number of VSAPI scanning threads is calculated per the formula:
    Number of processors x 2 + 1

    In your case 2 (processors) x 2 + 1

    The number of Scan Processes threads is calculated per the formula:
    Number of physical processing cores (2) x 2 +1 = 5.

    In you case 4 (cores) x 2 + 1

    Hope it helps

  2. Identifying performance issues is difficult

    To answer your question about Scan threads and processes:

    Scan Threads should be: logical processors X 2 + 1. So it should be 17 with that formula.

    Scan processes should be: physical processors X 2 + 1. So it should be 5 with that formula (as Andrea indicated).

    If you still have performance issues we may have to look elsewhere. You may want to enable performance counters to collect data and we can see what is going on: How to enable Performance Monitor Logging for Symantec Mail Security for Microsoft Exchange.

    Here are some articles about slowness:

    Exchange mail flow is either stopped or very slow when scanned by Symantec Mail Security for Microsoft Exchange (SMSMSE)

    Email stops flowing or is very slow when Symantec Mail Security 5.0 for Microsoft Exchange or Symantec Information Foundation Mail Security 6.x for Exchange running on Exchange 2003 is enabled.

    Mail flow is very slow or stops entirely when a content filtering rule for Symantec Mail Security for Exchange with a user condition is enabled.

    Enabling the Blank Subject and Sender Content Filtering rule causes disruption to the Microsoft Exchange mail flow

    Ben

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