The request hit rate ~39% is IMHO a pretty nice value, also the bandwitdh savings! As you have a cascade of proxies, you can try to increase your hit rate, if you split the cached object size between parent and children caches. I run a proxy cascade, where the parents cache objects larger than 8 KB and the childs cache objects smaller than 8 KB. This avoids duplicated object caching and could increase the hit rate a little bit. The 'Proxy efficiency' tells you, that the proxy woks fast enough the deliver objects faster from cache, than from the origin server. Of course, this shoud be ;-) But on the outher hand you can figure out some bottlenecks if it isn't. Compared to the values I have on my cache cluster, I would say your proxy works very well! Regards Michael On Thu, 2005-03-31 at 04:01, Bob Morrison wrote: > Thanks for the info on Calamaris. > > I installed Calamaris 2.99 and came up with these results: > Total amount: requests 50000 > Total amount cached: requests 19488 > Request hit rate: % 38.98 > Total Bandwidth: Byte > 346M > Bandwidth savings: Byte 50716K > Bandwidth savings in Percent (Byte hit rate): % 14.30 > Proxy efficiency (HIT [kB/sec] / DIRECT [kB/sec]): factor 4.47 > Average speed increase: % 12.48 > > The cache in this example is a child cache that is serving about 300 PC's in > a high school. The cache size is 1GB with 16K first level dirs and 256 > second level dirs. > > Should I be worried about these numbers? If so, what should I do to improve > them? > > Thanks in advance for any help > > Bob Morrison, CNE, MCSE > Network Administrator > Wallingford CT Public Schools USA > > > -----Original Message----- > From: Michael Pophal [mailto:michael.pophal@xxxxxxxxxxx] > Sent: Wednesday, March 30, 2005 3:10 AM > To: rmorris@xxxxxxxx > Cc: squid-users@xxxxxxxxxxxxxxx > Subject: Re: [squid-users] Measuring Squid Efficiency > > Take a look at the reporting tool calamaris. There you get information > about caching efficiency and you can see the efficiency of your > refresh_patterns in a separate report as well. There are also values > like: > - Bandwidth savings in Percent (Byte hit rate) > - Proxy efficiency (HIT [kB/sec] / DIRECT [kB/sec]) > - Average speed increase > and a huge amount of reports! > > http://cord.de/tools/squid/calamaris/Welcome.html.en > > Regards > Michael > > On Wed, 2005-03-30 at 03:52, Bob Morrison wrote: > > I am new to squid and would like to know what information to look for to > see > > if a squid cache needs adjusting to perform more efficiently. The > > evaluation tool we’re using is CacheManager.CGI script that comes with > > squid. > > > > Thanks in advance for any help > > > > Bob Morrison, CNE, MCSE > > Network Administrator > > Wallingford CT Public Schools USA > > -- Mit freundlichen Grüssen / With kind regards Michael Pophal -------------------------------------------------- Topic Manager Internet Access Services & Solutions -------------------------------------------------- Siemens AG, ITO A&S 4 Telefon: +49(0)9131/7-25150 Fax: +49(0)9131/7-43344 Email: michael.pophal@xxxxxxxxxxx --------------------------------------------------
