A very slow MS 4.62.2-3 & SA 3.2.1 & ClamAV 0.91 machine

[Chris Sweeney]

This is the last thing I see before it seems to stop runnnig in debug mode:

[31439] dbg: check:
subtests=__HAS_MSGID,__MISSING_REF,__MSGID_OK_DIGITS,__MSGID_OK_HOST,__MSOE_MID_WRONG_CASE,__NONEMPTY_BODY,__SANE_MSGID,__SARE_WHITELIST_FLAG,__UNUSABLE_MSGID

It runs good to this point then just kind of dies.  In debug mode it seems
to be hanging there. It won't go beyond that.

Thanks
Chris

> -----BEGIN PGP SIGNED MESSAGE-----
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>
> Have you tried running it in debug mode with SA debug switched on too?
> MailScanner -debug  -debug-sa
> and press Ctrl-S to pause the output when it appears to stop for a bit.
> That will tell you why it is taking so long. In case you don't know,
> Ctrl-Q will resume the normal output again.
>
> Chris Sweeney wrote:
>> I have the same problem, on Sunday I upgraded a MailScanner box running
>> RHEL 4 to the latest Spamassassin/ClamAV using the tar file from the
>> site
>> and I went on that machine, (2GIG RAM, 3GHZ processor) from less then 4
>> seconds total processing time per message to now over 40 seconds per
>> message.  40 seconds is good right now, it doesn't seem to be anything
>> to
>> do with MailScanner it seems to be hanging at the virus/spamassassin
>> scanning.
>>
>> Chris
>>
>>
>>
>>> I have five mail gateways. Here are a few things I've done that helped
>>> a
>>> lot.
>>>
>>> The item that made the biggest difference was changing 'Max Unscanned
>>> Messages Per Scan = 30' to 10, and changing 'Max Unsafe Messages Per
>>> Scan
>>> = 30' to 10 as well.
>>>
>>> I also increased my "Max Children" to 10, but I'm still working on
>>> tweaking that (only been running MailScanner in production for a week
>>> now).
>>>
>>> I had one machine that could not keep up with the volume of mail. I
>>> couldn't figure out why one machine was having trouble when the rest
>>> were
>>> doing fine. Soon I discovered that Spamassassin was causing a huge slow
>>> down on that one box. It was hanging for ever on checking if dns was
>>> avaiable or not. I set 'dns_available no' in the
>>> spam.assassin.prefs.conf
>>> file and things sped waaayyy up. I changed it on my other relays and it
>>> made a significant different on them as well, but not as much as the
>>> one
>>> relay that couldn't keep up with mail orginially. I still haven't
>>> figured
>>> out why it so greatly effected that one machine.
>>>
>>> Hope that helps.
>>>
>>> Good luck.
>>>
>>> David Gottschalk
>>> Emory University Infrastructure Technology Services
>>> david.gottschalk at emory.edu
>>>
>>> -----Original Message-----
>>> From: mailscanner-bounces at lists.mailscanner.info
>>> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of
>>> Quentin
>>> Campbell
>>> Sent: Thursday, July 12, 2007 11:37 AM
>>> To: MailScanner discussion
>>> Subject: A very slow MS 4.62.2-3 & SA 3.2.1 & ClamAV 0.91 machine
>>>
>>> I have a very slow mail gateway among the 4 that I have just upgraded.
>>>
>>> They all run MS 4.62.2-3, SA 3.2.1 and ClamAV 0.91 and should have
>>> identical configurations for MS and SA. MCP processing is done and it
>>> is
>>> the same on all 4.
>>>
>>> There were 211 batches of 30 messages each processed on the slow
>>> machine.
>>> Overall the average time to process each message is 15 seconds!
>>>
>>> The last two of these batches were processed by running MailScanner in
>>> debug mode. The average processing time for each message then dropped
>>> to
>>> between 2 and 3 seconds!
>>>
>>> I am trying to get a handle on why this machine is so slow. Any
>>> suggestions to help further my investigation are welcome.
>>>
>>> Quentin
>>> ---
>>> PHONE: +44 191 222 8209    Information Systems and Services (ISS),
>>>                            Newcastle University,
>>>                            Newcastle upon Tyne,
>>> FAX:   +44 191 222 8765    United Kingdom, NE1 7RU.
>>> ------------------------------------------------------------------------
>>>
>>>
>>>
>>> --
>>> MailScanner mailing list
>>> mailscanner at lists.mailscanner.info
>>> http://lists.mailscanner.info/mailman/listinfo/mailscanner
>>>
>>> Before posting, read http://wiki.mailscanner.info/posting
>>>
>>> Support MailScanner development - buy the book off the website!
>>> --
>>> MailScanner mailing list
>>> mailscanner at lists.mailscanner.info
>>> http://lists.mailscanner.info/mailman/listinfo/mailscanner
>>>
>>> Before posting, read http://wiki.mailscanner.info/posting
>>>
>>> Support MailScanner development - buy the book off the website!
>>>
>>> --
>>> This message has been scanned for viruses and
>>> dangerous content by MailScanner, and is
>>> believed to be clean.
>>>
>>>
>>>
>>
>>
>>
>
> Jules
>
> - --
> Julian Field MEng CITP
> www.MailScanner.info
> Buy the MailScanner book at www.MailScanner.info/store
>
> MailScanner customisation, or any advanced system administration help?
> Contact me at Jules at Jules.FM
>
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> For all your IT requirements visit www.transtec.co.uk
>
>
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>
> --
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.
> For all your IT requirements visit www.transtec.co.uk
>
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> MailScanner mailing list
> mailscanner at lists.mailscanner.info
> http://lists.mailscanner.info/mailman/listinfo/mailscanner
>
> Before posting, read http://wiki.mailscanner.info/posting
>
> Support MailScanner development - buy the book off the website!
>
> --
> This message has been scanned for viruses and
> dangerous content by MailScanner, and is
> believed to be clean.
>
>


-- 
Chris Sweeney
Cincinnati Phone
http://www.cincinnatiphone.com

Microsoft's new slogan: "Wait for us! We're the leaders!"





-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.