[infinispan-dev] File cache store comparison tests

[Mircea Markus]

Adding infinispan dev. 

Sent from my iPhone

On 27 Jun 2013, at 22:59, Divya  Mehra <dmehra at redhat.com> wrote:

> Fyi - 
> 
> Input from Hiram on #jdg regarding levelDB configuration for better performance [1]
> 
> chirino
> 2:48 was reviewing the leveldb bits and it seems like compression is off by default.  Can anyone comment?
> dmehra
> 3:29 chirino: which leveldb bits are you referring to?
> chirino
> 3:30 https://github.com/infinispan/infinispan/blob/master/cachestore/leveldb/src/main/java/org/infinispan/loaders/leveldb/LevelDBCacheStoreConfig.java#L24
> dmehra
> 3:31 chirino: what is the impact? and what should the value be?
> chirino
> 3:32 set it to CompressionType.SNAPPY
> 3:32 you get better perf.
> 
> chirino
> 3:45 yeah if you guys are doing perf comparisons you really need to run /w SNAPPY enabled.
> 3:46 it can be a totally different beast.
> dmehra
> 3:46 chirino: how much expected speedup?
> chirino
> 3:46 depends on the data, but if the data compresses well, it can be HUGE.
> 3:47 there are JNI snappy libs too.. use that if you can as those too are faster.
> just add the following jars to your classpath:
> 3:49 https://gist.github.com/chirino/5879733
> 3:49 that way you can get JNI speed if it's available and fallback to pure java snappy if it's not.
> 
> [1] https://community.jboss.org/wiki/FileCacheStoreRedesign
> 
> Thanks,
> Divya