Review request: (turn off transparent huge pages) 8024838: Significant slowdown due to transparent huge pages
jesper.wilhelmsson at oracle.com
Fri Oct 4 00:01:14 PDT 2013
Is there a reason to why you chose not to use SET_FLAG_ERGO when updating the
flags? If not I would prefer if the macro was used.
Stefan Karlsson skrev 3/10/13 9:40 PM:
> Please review this change to turn off transparent huge pages by default.
> 8024838: Significant slowdown due to transparent huge pages
> Summary: 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: TBD1, TBD2
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