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forums still slow and flaky

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conversation started by Patrick Breitenbach — last modified 02-21-2007 12:54

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Re: forums still slow and flaky

Posted by LiveModern Webmaster at February 23. 2005


What sort of hardware and software are you running on? (I develop software for a living, so I have more than a passing interest.... )

The symptoms suggest that the system might have entered thrashing mode, where it's spending so much time trying to negotiate the constant barrage of new requests that it never has any time left to do real work.

The thrashing threshold varies somewhat depending on the system design, but it can be as low as ten requests per second (or even lower, if servicing a request takes more than a second or so). The bad news is that (a) once you've reached the threshold, about the only thing you can do to solve the problem is add hardware resources (CPU thread capacity is typically the bottleneck), and (b) every system eventually reaches the threshold, sooner or later.

-Steve



Re: forums still slow and flaky

Posted by Marshall Mayer at February 23. 2005


Steve,



I think you might be right on the trashing theory. There are 54
browsers on the site right now, and we normally have quite a few more
than 10 request per second. The problem seems to manifest itself most
when a registration process is in progress. And that's what I am
currently focusing my efforts on (some people can't register, not many
but enough). Once I have that solved, I home it solves other problems
(this one), but have it on my list to upgrade the server (RAM then CPU).



Marshall





Re: forums still slow and flaky

Posted by LiveModern Webmaster at February 23. 2005


That's thrashing, not trashing. Trashing is what we do when we discuss the performance of this web site amongst ourselves. ;)

-Steve



Re: forums still slow and flaky

Posted by Marshall Mayer at February 23. 2005


LOL, one of my more interesting freudian slips lately...



Marshall



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This page Copyright © LiveModern, Inc. and by the Contributing Author(s) above, if any. Breitenbach, P. (2005, January 25). forums still slow and flaky. Retrieved November 22, 2008, from LiveModern: Your Best Modern Home Web site: http://livemodern.com/forums/website/ploneboardconversation.2006-11-21.0482375054.
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