To properly benchmark with caching enabled, what is usually done is:
1) Run once to get file cached
2) Run again to get accurate performance metrics with caching included
Ryan
On Fri, Mar 25, 2016 at 9:45 AM, Sean Arms <sarms@xxxxxxxx> wrote:
> Greetings Benjamin,
>
> You may be able to tweak the Disk and Object caching options in
> threddsConfig.xml to turn off as much of the caching as possible (i.e.
> setting max/min files to keep, max/min size, scour, etc.). However, we have
> not tried this before so we are not sure how well this will work. I
> understand wanting a clean performance test, but unless you are going to
> try to run your server without caching, then from a user or your servers
> standpoint, it would be good to keep caching turned on in the performance
> testing. Please do let us know how the testing goes!
>
> Cheers,
>
> Sean
>
>
> On Tue, Mar 22, 2016 at 3:55 AM, Benjamin Ebermann <
> Benjamin.Ebermann@xxxxxxxxxxxxx> wrote:
>
>> Hi TDS Support-Team,
>>
>> I woud like to test the best NetCDF configuration for as specific
>> problem. For this I simulate requests to the TDS and measure the access
>> time. For more robust results I repeat the tests 20 times, but the TDS
>> caches a lot and the results are falsified. The question is: how can I turn
>> off the cache for the tests in order to get a reliable measure of the
>> access time?
>>
>> We use: TDS 4.6.2
>>
>> Many thanks in advance.
>>
>> Benjamin Ebermann
>>
>> --
>> ------------------------------------------------------------------------
>> Benjamin Ebermann phone : +49-351-463.33840
>> Institut fuer Planetare Geodaesie fax : +49-351-463.37063
>> Technische Universitaet Dresden email :
>> benjamin.ebermann@xxxxxxxxxxxxx
>> D-01062 Dresden, Germany web : tu-dresden.de/geo/ipg/gef
>> ------------------------------------------------------------------------
>>
>>
>>
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>
>
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--
Ryan May, Ph.D.
Software Engineer
UCAR/Unidata
Boulder, CO
