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

Thu Jul 12 23:33:17 IST 2007

Couple of things to try:

Try removing the last rule and try debug again. There may be something not quite right with it.

It could also be a problem with the rule after the one showing. freezing on it before it loads and not showing you. If this is the case, try removing the whole ruleset (Move it out of the directory) and try again.

Or, you could remove all your rules, and put them back in one by one, running debug each time, until it stops working.

Once you know what rule/ruleset is doing it, it should be easier to track down what the actual cause of the problem is.

________________________________

From: mailscanner-bounces at lists.mailscanner.info on behalf of Chris Sweeney
Sent: Fri 13/07/2007 10:14 a.m.
To: MailScanner discussion
Subject: Re: A very slow MS 4.62.2-3 & SA 3.2.1 & ClamAV 0.91 machine

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-----
> Hash: SHA1
>
> 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
>
> PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654
> 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
>
> --
> 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.

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