Bug 1056214 - EJB invocation performance issues due to high allocation counts of useless strings
Summary: EJB invocation performance issues due to high allocation counts of useless st...
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: JBoss Enterprise Application Platform 6
Classification: JBoss
Component: EJB
Version: 6.1.1,6.2.0,6.2.1
Hardware: All
OS: All
medium
medium
Target Milestone: DR0
: EAP 6.3.0
Assignee: David M. Lloyd
QA Contact: Jan Martiska
Russell Dickenson
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-01-21 17:14 UTC by David M. Lloyd
Modified: 2014-06-28 15:25 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2014-06-28 15:25:19 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)

Description David M. Lloyd 2014-01-21 17:14:30 UTC 
Description of problem:

Due to a minor bug in the StatefulComponentInstanceInterceptor, a string concatenation is performed for every invocation which causes a substantial amount of GC churn.  The fix is simple and low-risk and has been thoroughly tested upstream.


Version-Release number of selected component (if applicable):

All versions.

How reproducible:

100%

Steps to Reproduce:
1. Process lots of invocations in a tight loop
2. Observe high allocation counts and GC activity
3. ~ fin ~

Actual results:

Useless string construction

Expected results:

No string construction unless log level is set to DEBUG or higher

Additional info:

The upstream version of this fix is here: https://github.com/wildfly/wildfly/commit/a6727c715a9d04c6991
Comment 2 Kabir Khan 2014-01-21 23:09:33 UTC 
qa-acked myself since I wanted to clear out as many as possible before going to bed, and the fix is trivial
Comment 3 Jan Martiska 2014-02-17 10:59:03 UTC 
Verified in 6.3.0.DR0.
Comment 4 sgilda 2014-05-12 19:35:56 UTC 
Changed <literal></literal> tags in Doc Text to ticks (`) to fix Bug 1096865
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