Varnish 2.1.3 nuking objects from cache
Stefan Pommerening
pom at dmsp.de
Fri Dec 17 10:51:13 CET 2010
Hi,
Until today I thought that when varnish (2.1.3) is nuking objects from cache
(counter n_lru_nuked increasing) the reason must be that the cache is full.
My strange situation is:
- varnish 2.1.3 configured -s file,<fname>,20GB
- monitoring using varnishstat -f sm_balloc, sm_bfree
- ~ 15 GB cache used, ~ 5 GB cache free
- counter n_lru_nuked increasing every now and then
(not rapidly, but occasionally although cache usage is stable at
about 75% now)
What else (other than a full cache) can be the reason for objects being
nuked from cache?
(not expired)
I've read that there was a bug in varnish 2.0.6 with some similar behaviour,
but I am using 2.1.3.
Stefan
--
http://dmsp.de
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