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Remove the dynamic rebalancing code, since magazines reduce its utility.

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This commit is contained in:
Jason Evans
2009-12-29 00:09:15 -08:00
parent 569432cffd
commit 3ee7a5c5b0
5 changed files with 69 additions and 424 deletions
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13
jemalloc/doc/jemalloc.3.in
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@@ -188,19 +188,6 @@ flags being set) become fatal.
The process will call
.Xr abort 3
in these cases.
@roff_balance@@roff_tls@.It B
@roff_balance@@roff_tls@Double/halve the per-arena lock contention threshold at
@roff_balance@@roff_tls@which a thread is randomly re-assigned to an arena.
@roff_balance@@roff_tls@This dynamic load balancing tends to push threads away
@roff_balance@@roff_tls@from highly contended arenas, which avoids worst case
@roff_balance@@roff_tls@contention scenarios in which threads disproportionately
@roff_balance@@roff_tls@utilize arenas.
@roff_balance@@roff_tls@However, due to the highly dynamic load that
@roff_balance@@roff_tls@applications may place on the allocator, it is
@roff_balance@@roff_tls@impossible for the allocator to know in advance how
@roff_balance@@roff_tls@sensitive it should be to contention over arenas.
@roff_balance@@roff_tls@Therefore, some applications may benefit from increasing
@roff_balance@@roff_tls@or decreasing this threshold parameter.
.It C
Double/halve the size of the maximum size class that is a multiple of the
cacheline size (64).