[infinispan-issues] [JBoss JIRA] (ISPN-7492) Bad Performance in cache.values() due to Logging

[Balazs Szücs (JIRA)]

Balazs Szücs created ISPN-7492:
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             Summary: Bad Performance in cache.values() due to Logging
                 Key: ISPN-7492
                 URL: https://issues.jboss.org/browse/ISPN-7492
             Project: Infinispan
          Issue Type: Enhancement
          Components: Core
    Affects Versions: 8.2.6.Final
            Reporter: Balazs Szücs


h4. Test case:

{code:java}
ache.getAdvancedCache().withFlags(Flag.CACHE_MODE_LOCAL, Flag.SKIP_CACHE_LOAD).values()
{code}

h4. Problem:

when calling values() frequently, this operation becomes quickly a performance bottleneck

h4. Root problem:

in AbstractLocalCacheStream the logger is initialized on each object creation. Internally JBoss Logging loads the class by reflection, consuming a lot of resources.

{code:java}
protected final Log log = LogFactory.getLog(getClass());
{code}

Additionally, this log instance is never used in AbstractLocalCacheStream or in any subclasses.

h4. Possible solution:

removing 

{code:java}
protected final Log log = LogFactory.getLog(getClass());
{code}

causes a drastical speedup of values()



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