On 6/12/2011 5:04 p.m., Sean SPALDING wrote:
Hi all,
I recently noticed one of my squid servers reverse its "normal" usage stats for:
Request Memory Hit Ratios: 5min: 0.6%, 60min: 0.5%
Request Disk Hit Ratios: 5min: 41.7%, 60min: 48.3%
"Normal" usage looks more like:
Request Memory Hit Ratios: 5min: 48.9%, 60min: 48.9%
Request Disk Hit Ratios: 5min: 2.9%, 60min: 6.2%
Is squid is now satisfying requests mainly from disk? Am I interpreting this correctly?
It is hard to tell which if those "normal" stats is the unusual one.
The top set is serving mostly from cache_dir. The lower set mostly from
cache_mem.
There is adequate free memory on this machine. None of the other (near identical) servers in the pool are exhibiting this behaviour. All servers are configured as an "accelerator" for the same application so the usage should be similar.
"free memory on this machine " has nothing to do with it. Squid only
uses the amount of RAM you allocate it to use as cache_mem for memory
cached HTTP objects.
Amos
