[Bugs] [Bug 1193929] GlusterFS can be improved

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1193929



--- Comment #364 from Worker Ant <bugzilla-bot at gluster.org> ---
COMMIT: https://review.gluster.org/21148 committed in master by "Amar Tumballi"
<amarts at redhat.com> with a commit message- libglusterfs/src/dict.c : use
xxhash64 for hashing.

As part of a larger effort to consolidate hash functions
and use a faster, with less collissions, I've moved to use
xxhash as the hashing function for the dictionary.

Note: I'm using only 32 bits of the hashes, as the hash field
is currently a 32 bit variable. There's room (since the struct
is not packed) to move to use a 64bit variable. Donno how it'll
affect performance.

Only compile-tested!

updates: bz#1193929
Signed-off-by: Yaniv Kaul <ykaul at redhat.com>

Change-Id: Ie244efd1368234e54dd5957ee1ae5bebd7d9409a

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