diff options
| author |   visa <visa@openbsd.org> | 2017-07-12 06:39:13 +0000 |
|---|---|---|
| committer | visa <visa@openbsd.org> | 2017-07-12 06:39:13 +0000 |
| commit | 63c7b0bd0f6711a74702334062a2395bcd7c92d7 (patch) | |
| tree | 439d0993434f0b4a19f9d06cba1b3e8ed1040611 /sys/kern/subr_pool.c | |
| parent | remove CPU_LIDSUSPEND/machdep.lidsuspend (diff) | |
| download | wireguard-openbsd-63c7b0bd0f6711a74702334062a2395bcd7c92d7.tar.xz wireguard-openbsd-63c7b0bd0f6711a74702334062a2395bcd7c92d7.zip | |
When there is no contention on a pool cache lock, lower the number
of items that a cache list is allowed to hold. This lets the cache
release resources back to the common pool after pressure on the cache
has decreased.
OK dlg@
Diffstat (limited to 'sys/kern/subr_pool.c')
| -rw-r--r-- | sys/kern/subr_pool.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/kern/subr_pool.c b/sys/kern/subr_pool.c index 9f1bbae3923..bf0f86d37b5 100644 --- a/sys/kern/subr_pool.c +++ b/sys/kern/subr_pool.c @@ -1,4 +1,4 @@ -/* $OpenBSD: subr_pool.c,v 1.217 2017/06/23 01:21:55 dlg Exp $ */ +/* $OpenBSD: subr_pool.c,v 1.218 2017/07/12 06:39:13 visa Exp $ */ /* $NetBSD: subr_pool.c,v 1.61 2001/09/26 07:14:56 chs Exp $ */ /*- @@ -1957,6 +1957,9 @@ pool_cache_gc(struct pool *pp) if ((contention - pp->pr_cache_contention_prev) > 8 /* magic */) { if ((ncpusfound * 8 * 2) <= pp->pr_cache_nitems) pp->pr_cache_items += 8; + } else if ((contention - pp->pr_cache_contention_prev) == 0) { + if (pp->pr_cache_items > 8) + pp->pr_cache_items--; } pp->pr_cache_contention_prev = contention; } |