Re: [VuFind-Tech] Java Options

[Greg P. <gre...@gm...>]

I'd suggest jmeter. Can do simple testing and generate a graph for you. You
can configure it to be multi-threaded too for simulating the server under
load by lots of users.


On 14 December 2010 22:38, Heiko Weier <h....@tu...> wrote:

> Greg Pendlebury schrieb:
> > Coolio,
> >
> > I wouldn't worry about the output in top all that much, it looks like
> you'd
> > expect. With 8 cores you could (in theory) handle load averages of up to
> 8
> > without slow down. and 1.84% is expected because top treats the 64
> 'virtual'
> > cpus as real, so one fully committed cpu is around 1.6%. top is more of a
> > linux tool then unix, but the proper unix ones always confuse me anyway
> :)
> >
> > You could try increasing the amount of RAM allocated as Fang Peng
> suggested
> > though. The 3.8g cap for 32 bit may give you some improvement. 2g was
> simply
> > where I noticed no extra improvements, but I did that testing almost two
> > years ago.
> >
> > And don't forget trying the suggestion in point 8. Solr config can make a
> > big difference.
> >
> > Some of the recent discussions on the Solrmarc list has led me to wonder
> > whether doing your submissions over HTTP would improve matters. Currently
> > VuFind runs Solrmarc in embedded mode, which is not thread safe, but is
> the
> > fastest single threaded method.
> >
> > For a process so heavily CPU bound, architecture like yours may find
> > improvements running multi-threaded marc parsing and submitted over HTTP
> to
> > a single core. Solrmarc doesn't currently support this, but if you are
> > interested I could look into modifying it.
>
> Indexing over http sounds a good idea, but we should have the core
> vufind in mind.
>
> My next step would be to test if this server can handle request good
> enough to play that role.
> Thinking of a small script with a direct (wget?) request to solr and
> counting the results.
>
> Or is there already a benchmark script for solr available?
>
>
> --
> Mit freundlichen Grüßen
>
> Heiko Weier           Technische Universität Hamburg-Harburg
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