Hi Daniel,
Valgrind is probably the most common method of tracking memory problems on
Linux I am aware of.
Please note the following document on monitoring Virtuoso memory consumption:
http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtMonitorMemoryConsumption
Also, note the following 2 parameters: ThreadCleanupInterval,
ResourcesCleanupInterval which can both be set to 1 in order to reduce memory
leaking:
http://docs.openlinksw.com/virtuoso/databaseadmsrv.html#ex_threadcleanupinterval
although as this was not apparently occurring with 7.2.0 it may not help, but
worth trying ...
How is this "process to convert MeSH XML to MeSH RDF" which uses lots of memory
performed, is this done in Virtuoso or by some external process ?
Best Regards
Hugh Williams
Professional Services
OpenLink Software, Inc. // http://www.openlinksw.com/
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> On 6 Aug 2015, at 15:28, Davis, Daniel (NIH/NLM) [C] <daniel.da...@nih.gov>
> wrote:
>
> MeSH RDF in production (front-end is http://id.nlm.nih.gov/) is experiencing
> Virtuoso memory leaks of virtuoso during our nightly reload of all the MeSH
> triples. We noticed these first because virtuoso was being killed by the
> OOM killer, either when the process to convert MeSH XML to MeSH RDF used lots
> of memory, or when the scripted load of the mesh triples via DB.DBA.ttlp()
> started.
>
> We are upgrading from Virtuoso 7.2.0 to 7.2.1.
>
> Aside from compiling it debug and running this under valgrind, are there any
> other ways to diagnose memory problems with Virtuoso?
> Dan Davis, Systems/Applications Architect (Contractor),
> Office of Computer and Communications Systems,
> National Library of Medicine, NIH
>
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