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Add the S/s JEMALLOC_OPTIONS flags to enable/disable tcache bin sorting.

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Jason Evans
2010-01-03 16:17:52 -08:00
parent 279e09d1ff
commit e9db6c92ab
2 changed files with 22 additions and 1 deletions
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9
jemalloc/doc/jemalloc.3.in
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@@ -312,6 +312,15 @@ Double/halve the size of the maximum size class that is a multiple of the
quantum (8 or 16 bytes, depending on architecture).
Above this size, cacheline spacing is used for size classes.
The default value is 128 bytes.
@roff_tcache@.It S
@roff_tcache@Sort the objects of a particular size class that are stored in a
@roff_tcache@thread-specific cache just before flushing some of them from the
@roff_tcache@cache, such that the objects highest in memory are preferentially
@roff_tcache@freed.
@roff_tcache@This tends to reduce fragmentation, but sorting is (n lg n), and in
@roff_tcache@practice it is expensive enough to have a moderate performance
@roff_tcache@impact.
@roff_tcache@This option is enabled by default.
@roff_trace@.It T
@roff_trace@Write a verbose trace log to a set of files named according to the
@roff_trace@pattern