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Add a hard limit on tcache max size class.

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For locality reasons, tcache bins are integrated in TSD.  Allowing all size
classes to be cached has little benefit, but takes up much thread local storage.
In addition, it complicates the layout which we try hard to optimize.
This commit is contained in:
Qi Wang 2020-10-15 16:37:16 -07:00 • committed by Qi Wang
parent 3de19ba401
commit 5e41ff9b74
4 changed files with 14 additions and 9 deletions
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include/jemalloc/internal/tcache_structs.h
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@ -54,7 +54,7 @@ struct tcache_slow_s {
struct tcache_s {
tcache_slow_t *tcache_slow;
cache_bin_t bins[SC_NSIZES];
cache_bin_t bins[TCACHE_NBINS_MAX];
};
/* Linkage for list of available (previously used) explicit tcache IDs. */