On 2006-02-07, Gregori Parker <gregori@xxxxxxxxxxxxxx> wrote: > > Can anyone recommend techniques for assessing squid performance? I > have no good way of benchmarking our clusters since SNMP isnt ready > quite yet. I use Performance CoPilot from http://oss.sgi.com/projects/pcp/ for keeping track of squid and server performance. It comes by default with a huge number of system performance metrics, and also has a nice plugin (PMDA, Performance Metrics Domain Agent) for collecting metrics from the squid access.log. i.e. it can collect historic, or show live how many requests/s or byte/s squid is answering of type: total get head post other size.zero le3k le10k le30k le100k le300k le1m le3m gt3m unknown client.total cached.total cached.size.zero le3k le10k le30k le100k le300k le1m le3m gt3m unknown uncached.total uncached.size.zero le3k le10k le30k le100k le300k le1m le3m gt3m unknown and also combine this with system level metrics like load, system cpu time, cpu i/o wait, per partition byte/s, network interface byte/s, and much more.. Because of it's historic logs of all this, it's great for collecting the performance numbers during high activity, and then replaying it to analyse what goes wrong later on. -jf
