Date: Tue, 14 Jul 2020 21:17:09 +0000 (UTC) From: Mateusz Guzik <mjg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r363200 - head/sys/kern Message-ID: <202007142117.06ELH9YS022155@repo.freebsd.org>
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Author: mjg Date: Tue Jul 14 21:17:08 2020 New Revision: 363200 URL: https://svnweb.freebsd.org/changeset/base/363200 Log: cache: count dropped entries Modified: head/sys/kern/vfs_cache.c Modified: head/sys/kern/vfs_cache.c ============================================================================== --- head/sys/kern/vfs_cache.c Tue Jul 14 21:16:48 2020 (r363199) +++ head/sys/kern/vfs_cache.c Tue Jul 14 21:17:08 2020 (r363200) @@ -408,6 +408,7 @@ STATNODE_ULONG(numneg, "Number of negative cache entri STATNODE_ULONG(numcache, "Number of cache entries"); STATNODE_COUNTER(numcachehv, "Number of namecache entries with vnodes held"); STATNODE_COUNTER(numcalls, "Number of cache lookups"); +STATNODE_COUNTER(numdrops, "Number of dropped entries due to reaching the limit"); STATNODE_COUNTER(dothits, "Number of '.' hits"); STATNODE_COUNTER(dotdothits, "Number of '..' hits"); STATNODE_COUNTER(numchecks, "Number of checks in lookup"); @@ -1853,6 +1854,7 @@ cache_enter_time(struct vnode *dvp, struct vnode *vp, lnumcache = atomic_fetchadd_long(&numcache, 1) + 1; if (__predict_false(lnumcache >= ncsize)) { atomic_add_long(&numcache, -1); + counter_u64_add(numdrops, 1); return; }
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