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MEDIUM: pattern: call malloc_trim() on pat_ref_reload()

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This is one case where we may release large amounts of data at once. Tests
show that without this, after 10 full reloads of an ACL containing  1M IP
addresses, the memory usage grew and stabilized around 1.7 GB of RSS. With
this change, it stays around 260 MB and is stable across reloads.
This commit is contained in:
Willy Tarreau 2020-11-03 15:55:35 +01:00
parent 88366c2926
commit 114d698fde
1 changed files with 4 additions and 0 deletions
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4
src/pattern.c
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@ -2101,6 +2101,10 @@ void pat_ref_reload(struct pat_ref *ref, struct pat_ref *replace)
HA_RWLOCK_WRUNLOCK(PATEXP_LOCK, &expr->lock);
}
HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock);
#if defined(HA_HAVE_MALLOC_TRIM)
malloc_trim(0);
#endif
}
/* This function prunes all entries of <ref>. This function