Review request: (turn off transparent huge pages) 8024838: Significant slowdown due to transparent huge pages
gnu.andrew at redhat.com
Fri Oct 11 13:32:20 PDT 2013
----- Original Message -----
> 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
Can you explain where you see this slowdown? I'm a little worried that
this does not seem to have been questioned in this review.
Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)
PGP Key: 248BDC07 (https://keys.indymedia.org/)
Fingerprint = EC5A 1F5E C0AD 1D15 8F1F 8F91 3B96 A578 248B DC07
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