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Change opt.metadata_thp to [disabled,auto,always].

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To avoid the high RSS caused by THP + low usage arena (i.e. THP becomes a
significant percentage), added a new "auto" option which will only start using
THP after a base allocator used up the first THP region.  Starting from the
second hugepage (in a single arena), "auto" behaves the same as "always",
i.e. madvise hugepage right away.
This commit is contained in:
Qi Wang
2017-08-24 14:29:28 -07:00
committed by Qi Wang
parent ea91dfa58e
commit 47b20bb654
10 changed files with 84 additions and 25 deletions
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2
src/stats.c
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@@ -802,11 +802,11 @@ stats_general_print(void (*write_cb)(void *, const char *), void *cbopaque,
}
OPT_WRITE_BOOL(abort, ",")
OPT_WRITE_BOOL(abort_conf, ",")
OPT_WRITE_BOOL(metadata_thp, ",")
OPT_WRITE_BOOL(retain, ",")
OPT_WRITE_CHAR_P(dss, ",")
OPT_WRITE_UNSIGNED(narenas, ",")
OPT_WRITE_CHAR_P(percpu_arena, ",")
OPT_WRITE_CHAR_P(metadata_thp, ",")
OPT_WRITE_BOOL_MUTABLE(background_thread, background_thread, ",")
OPT_WRITE_SSIZE_T_MUTABLE(dirty_decay_ms, arenas.dirty_decay_ms, ",")
OPT_WRITE_SSIZE_T_MUTABLE(muzzy_decay_ms, arenas.muzzy_decay_ms, ",")