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cache: count evictions of negatve entries

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Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Mateusz Guzik 2019-09-23 08:53:14 +00:00
parent ba7a55d934
commit afe257e3ca
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=352617
1 changed files with 3 additions and 0 deletions
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3
sys/kern/vfs_cache.c
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@ -378,6 +378,8 @@ STATNODE_COUNTER(numfullpathfail2,
"Number of fullpath search errors (VOP_VPTOCNP failures)");
STATNODE_COUNTER(numfullpathfail4, "Number of fullpath search errors (ENOMEM)");
STATNODE_COUNTER(numfullpathfound, "Number of successful fullpath calls");
static long numneg_evicted; STATNODE_ULONG(numneg_evicted,
"Number of negative entries evicted when adding a new entry");
STATNODE_COUNTER(zap_and_exit_bucket_relock_success,
"Number of successful removals after relocking");
static long zap_and_exit_bucket_fail; STATNODE_ULONG(zap_and_exit_bucket_fail,
@ -844,6 +846,7 @@ cache_negative_zap_one(void)
ncp->nc_name, ncp->nc_neghits);
cache_zap_locked(ncp, true);
numneg_evicted++;
out_unlock_all:
mtx_unlock(&neglist->nl_lock);
rw_wunlock(blp);