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Re: cygwin/x symantec antivirus conflict
- From: Philip Gladstone <philip at gladstonefamily dot net>
- To: cygwin-xfree at cygwin dot com
- Date: Wed, 06 Oct 2004 22:36:22 -0400
- Subject: Re: cygwin/x symantec antivirus conflict
- References: <cjcsqa$23t$1@sea.gmane.org> <Pine.LNX.4.55.0409302242010.6688@lupus.ago.vpn>
- Reply-to: cygwin-xfree at cygwin dot com
Alexander Gottwald wrote:
Jack Tanner wrote:
A while back I mentioned I was experiencing slowdowns under X.
http://sources.redhat.com/ml/cygwin-xfree/2004-09/msg00010.html
I think the slowdowns may have to do with Symantec Antivirus.
The slowness that I see with Symantec Antivirus is due to the 'select'
emulation in cygwin. Whenever XWin.exe does a select (which is nearly
all the time), the select emulation creates a new thread, creates a new
TCP socket and then connects to it. I suspect that the Symantec firewall
is getting in the picture here and making this a very slow operation.
I looked at the select emulation code and decided that it was too
complex to make a general purpose improvement. However, it might well be
possible to recognize the case of waiting on one or more network
connections and the keyboard/mouse, and handle that case efficiently. My
feeling is that this would make a huge improvement in performance.....
Philip
--
Philip Gladstone
* Check out the live pondcam at http://pond.gladstonefamily.net