Hi All, Added to: http://wiki.lib.sun.ac.za/index.php/SUNScholar/Optimisations/Tomcat
Cheers hg *Hilton Gibson* Ubuntu Linux Systems Administrator Stellenbosch University Library http://staff.lib.sun.ac.za/~hgibson/docs/cv/cv.html On 17 August 2015 at 11:41, helix84 <heli...@centrum.sk> wrote: > I should add that this was on DSpace 5 and that APR is not on by default > (requires the libtcnative-1 package). > > > On Mon, Aug 17, 2015 at 11:39 AM, helix84 <heli...@centrum.sk> wrote: > >> Hi everyone, >> >> this is just a heads-up about a problem I solved with my repository. >> >> I was getting ~60% CPU usage on all CPUs in the DSpace VM all the time, >> even when DSpace was idle. This is on Debian Jessie with distro packages of >> tomcat8 and openjdk-7-jdk:amd64. >> >> The problem went away when I turned off APR in /etc/tomcat8/server.xml. I >> confirmed this solution independently on 2 different DSpace instances. >> >> <!-- >> <Listener className="org.apache.catalina.core.AprLifecycleListener" >> SSLEngine="on" /> >> --> >> >> Be aware if you define your HTTPS connector in Tomcat, it's attribute >> syntax changes depending on whether you are using APR (OpenSSL) or not >> (JSSE). >> >> Unrelated to CPU usage, I was also getting occasional "Too many open >> files" message with APR despite trying to raise the respective ulimit. They >> haven't appeared yet with APR turned off. >> >> If you have similar experiences, please do share them with us. >> >> >> Regards, >> ~~helix84 >> >> Compulsory reading: DSpace Mailing List Etiquette >> https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette >> >> > > > ------------------------------------------------------------------------------ > > _______________________________________________ > DSpace-tech mailing list > DSpace-tech@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/dspace-tech > List Etiquette: > https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette >
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