I have a fairly large zope installation (thousands of users, ~130G combined zeo storages) and have been playing with the check interval. I have a single Xeon 3.2 that runs the show (both ZEO and Zope). I notice that when I set the check-interval at 826 (pystone / 50) the performance is horrible. In my case the lower I set the check interval, the faster the site is (quite significantly). Its not a problem - I'm just curious as to why this is/may be. From reading docs/postings online, it seems to me that the higher the check interval is, the faster the site should be (up to a point -- law of diminishing returns sort of thing). It is completely opposite for me and inquiring minds want to know... Thanks - Matt ________________________________ Matthew E. Kozloski Systems Administrator Specialized Technology Resources, Inc. 10 Water ST Enfield, CT 06082 USA t: 860-749-8371 f: 860-749-8234 e: matthew.kozloski -at- strus.com
--On 18. November 2005 12:35:09 -0500 "Kozloski, Matthew E" <matthew.kozloski@strus.com> wrote:
Its not a problem - I'm just curious as to why this is/may be. From reading docs/postings online, it seems to me that the higher the check interval is, the faster the site should be (up to a point -- law of diminishing returns sort of thing). It is completely opposite for me and inquiring minds want to know...
From my experience there is usually no need to change the interval...even not for large sites..
-aj
Its not a problem - I'm just curious as to why this is/may be. From reading docs/postings online, it seems to me that the higher the check interval is, the faster the site should be (up to a point -- law of diminishing returns sort of thing). It is completely opposite for me and inquiring minds want to know...
Matt, your box is only single processor right? I wonder if that and/or the fact that you have the zeo client and server on the same box has anything to do with it...
From my experience there is usually no need to change the interval...even not for large sites..
Well, necessary, no, your site will still function ;-) But, if Matt's found ways to speed up his servers by tweaking the check interval, I'm certainly interested, even if no-one else is! Matt, what kind of speed increase did you see? How did you measure it? cheers, Chris -- Simplistix - Content Management, Zope & Python Consulting - http://www.simplistix.co.uk
On 11/19/05, Kozloski, Matthew E <matthew.kozloski@strus.com> wrote:
I have a fairly large zope installation (thousands of users, ~130G combined zeo storages) and have been playing with the check interval. I have a single Xeon 3.2 that runs the show (both ZEO and Zope). I notice that when I set the check-interval at 826 (pystone / 50) the performance is horrible. In my case the lower I set the check interval, the faster the site is (quite significantly).
Its not a problem - I'm just curious as to why this is/may be. From reading docs/postings online, it seems to me that the higher the check interval is, the faster the site should be (up to a point -- law of diminishing returns sort of thing). It is completely opposite for me and inquiring minds want to know...
iirc, from shane's post some time ago do a pystone and divide by 50 that's your check interval value hth Thanks - Matt
________________________________
Matthew E. Kozloski Systems Administrator
Specialized Technology Resources, Inc. 10 Water ST Enfield, CT 06082 USA
t: 860-749-8371 f: 860-749-8234 e: matthew.kozloski -at- strus.com <http://strus.com> _______________________________________________ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
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participants (4)
-
Andreas Jung -
Bakhtiar A Hamid -
Chris Withers -
Kozloski, Matthew E