On 26/06/13 15:59, Olivier Mauras wrote:
On 2013-06-26 16:33, Simon Kelley wrote:
On 26/06/13 15:21, Olivier Mauras wrote:
Hello, I plan to deploy dnsmasq on a medium sized network as primary
caching DNS for both workstations and servers - 1500 workstations /
600 servers. I'm currently testing it on a test subnet with around 50
workstations and have been wondering about the cache stats.
dnsmasq[27357]: time 1372247969 dnsmasq[27357]: cache size 2000,
0/65220 cache insertions re-used unexpired cache entries.
dnsmasq[27357]: queries forwarded 22019, queries answered locally
11238 dnsmasq[27357]: server xx.xx.xx.164#53: queries sent 5812,
retried or failed 0 dnsmasq[27357]: server xx.xx.xx.165#53: queries
sent 5812, retried or failed 0 dnsmasq[27357]: server
xx.xx.xx.114#53: queries sent 16201, retried or failed 30
dnsmasq[27357]: server xx.xx.xx.115#53: queries sent 925, retried or
failed 10 What exactly means "0/65220 cache insertions re-used
unexpired cache entries"??
It means dnsmasq handled 65520 names lookups that needed to be sent to
upstream severes that nothing was thrown out of the cache before
reaching the end of its time-to-live, to make room for a newer name. For
the first number, smaller is better.
Simon.
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Thanks for the clarification Simon, i was wondering if the cache was
correctly used :)
If i understand you correctly it means that when the cache is filled,
newer queries won't be cached as long as a cached one has not expired,
right ?
No. new queries are always cached. If the cache is full with entries
which haven't reached the end of their time-to-live, then the entry
which hasn't been looked up for the longest time is evicted.
Any drawback to max cache-size value to 10000 ?
Only memory use.
Simon.
-O.
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