archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-24 04:54:40 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8024838: Significant slowdown due to transparent huge pages

Browse source 
Don't turn on transparent huge pages (-XX:+UseTransparentHugePages) unless explicitly specified on the command line. This has the effect that large pages are never turned on Linux unless the user has explicitly enabled any of the large pages flags: -XX:+UseLargePages, -XX:+UseTransparentHugePages, -XX:+UseHugeTLBFS, and -XX:+UseSHM.

Reviewed-by: jwilhelm, tschatzl, brutisso
This commit is contained in:
Stefan Karlsson 2013-10-05 10:14:58 +02:00
parent 582aa55e4d
commit 3b34e78d20
3 changed files with 411 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

2
hotspot/src/os/linux/vm/globals_linux.hpp
View file

@ -53,7 +53,7 @@
// Defines Linux-specific default values. The flags are available on all
// platforms, but they may have different default values on other platforms.
//
define_pd_global(bool, UseLargePages, true);
define_pd_global(bool, UseLargePages, false);
define_pd_global(bool, UseLargePagesIndividualAllocation, false);
define_pd_global(bool, UseOSErrorReporting, false);
define_pd_global(bool, UseThreadPriorities, true) ;