Questions:
(a) is it this particular page which is slow, or is it any first page in a user
session (which just happens to usually be this page) ?
(b) are subsequent reloads of the same page shortly after also slow ?
Slowness is likely to be caused by the Java app (or the entire VM) being
swapped out from memory; database connections needing to be reestablished;
per-session customisations meaning nothing can be cached; or HTTPD DNS lookups.
cheers
stuart
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________________________________
From: Wally Grotophorst <wal...@gmu.edu>
Sent: Tuesday, 14 April 2015 3:02 p.m.
To: dspace-tech@lists.sourceforge.net
Subject: Re: [Dspace-tech] Initial Community Screen really slow to load on 5.1
Did a complete rebuild of DSpace 5.1 today and it seems to be working much
better now...back to the 1-2 second response time.
So I don't know what the problem might have been but I post this followup just
in case someone hits a similar issue.
- Wally
Just upgraded our DSpace instance from 4.3 to 5.1. A few hiccups along the
way but it is running now. One issue is the very long (10-15 seconds) wait
time until the initial page (the community list) loads. Once it loads things
go swiftly on any subsequent page.
I ran a full vacuum on the postgres database but that didn't improve things.
And I have set this to "false" in dspace.cfg
xmlui.community-list.render.full = false
and this:
xmlui.community-list.cache = 18 hours
Neither made much difference.
Is there anything else that I might try to speed this up...or perhaps a hint on
which log to study to see what it's doing during that long delay. Any
suggestions will be welcomed. I should say that this same platform ran 4.3
quite briskly.
Theme: Mirage 1 XMLUI
but I see the same slowness on the JSPUI side as well
JAVA_OPTS="-d64 -server -XX:PermSize=512m -XX:-UseParallelGC -verbose:gc
-Xms2048m -Xmx4G -Djava.awt.headless=true -Dfile.encoding=UTF-8"
Server: Mac OS 10.10.3
Tomcat: 7.0.59
Postgres 9.3
- Wally
Wally Grotophorst
George Mason University
-
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