[infinispan-dev] [patch] Unit test to highlight potential performance and cache eviction issues in distributed mode

[Juha Heljoranta]

Hi,

Thanks for clarifying. The eviction policy seems to make sense.

I still get test failure when running a test with L1 cache disabled. I added 
an assertion check for the cache put/get operations to detect timeout. And 
this is what I'm constantly getting:
java.lang.AssertionError: Cache get took 15002 milliseconds (timeout=2000) 
key=L1DisabledAsymmetricClusterTest-28.

Could you try to re-run the test? I've enclosed an improved version of the 
patch. Also, if you still cannot reproduce the issue, please try to increase 
cacheEntriesNum in AbstractAsymmetricClusterTest.

In case increasing of the cacheEntriesNum doesn't affect it might help to 
change TestCacheManagerFactory.createClusteredCacheManager() to 
GlobalConfiguration.getClusteredDefault() in AbstractAsymmetricClusterTest 
temporarily and see does it make any difference.

I'm running the test via Eclipse TestNG plugin. 
The JVM options are:
-Dbind.address=127.0.0.1 -Djava.net.preferIPv4Stack=true
My development machine is a few years old laptop with dual core processor and 
4 GiB ram. The Java version is:
java version "1.6.0_0"
OpenJDK Runtime Environment (IcedTea6 1.6) (fedora-30.b16.fc11-x86_64)
OpenJDK 64-Bit Server VM (build 14.0-b16, mixed mode)

Regards,
Juha Heljoranta


On Monday 07 December 2009 16:40:39 Manik Surtani wrote:
> Hi Juha
> 
> I had a look, essentially it is only the 2 eviction-enabled tests that
>  fail.  And this is because you do not have a cache store configured.  The
>  eviction thread will kick in and pull stuff out of memory - and at this
>  point you will need to have this overflow into a cache store.  When using
>  DIST and the key is mapped to the local node, the DistributionManager will
>  *not* attempt a remote lookup as the key is assumed to be available
>  locally (either in memory or in a cache store).
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