JDK-7129284 : +DoEscapeAnalysis regression w/ early build of 7u4 (HotSpot 23) on Linux
  • Type: Bug
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 7u4
  • Priority: P1
  • Status: Closed
  • Resolution: Fixed
  • OS: linux
  • CPU: x86
  • Submitted: 2012-01-11
  • Updated: 2012-03-24
  • Resolved: 2012-03-24
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JDK 7 JDK 8 Other
7u4Fixed 8Fixed hs23Fixed
Related Reports
Relates :  
JDK-7147744 - CTW: assert(false) failed: infinite EA connection graph build
Description
Observing a performance regression with early build of 7u4 results with +DoEscapeAnalysis.
Comments
EVALUATION http://hg.openjdk.java.net/lambda/lambda/hotspot/rev/73df3733f2eb
22-03-2012
EVALUATION http://hg.openjdk.java.net/hsx/hotspot-gc/hotspot/rev/73df3733f2eb
18-02-2012
EVALUATION Removed code which tried to create edges from fields of destination objects of arraycopy to fields of source objects which could lead to significant time (minutes) spend in EA. Instead conservatively mark fields of source objects as globally escape. Also added 30 sec time limit for EA graph construction.
13-02-2012
EVALUATION http://hg.openjdk.java.net/hsx/hotspot-comp/hotspot/rev/73df3733f2eb
11-02-2012
WORK AROUND Disable escape analysis, -XX:-DoEscapeAnalysis
11-01-2012
PUBLIC COMMENTS Early build of JDK 7u4 (HotSpot 23) shows a large regression with escape analysis enabled when using +UseParallelOldGC or CMS. But, regression doesn't appear when using G1 GC.
11-01-2012