2012/1/11 jeffrey j donovan <donovan@xxxxxxxxxxxxxx>: > > On Jan 10, 2012, at 7:45 AM, E.S. Rosenberg wrote: > >> Hi, >> We run a setup where our users are passing through 0-2 proxies before >> reaching the Internet: >> - https 0 >> - http transparent 1 (soon also 2) >> - http authenticated 2 >> >> Lately we are experiencing some (extreme) slowness even-though the >> load on the line is only about half the available bandwidth, we know >> that on the ISP side our traffic is also passing through all kinds of >> proxies/filters etc. >> I would like to somehow be able to see where the slowdowns are >> happening to rule out that it's not our side at fault, but I don't >> really know what tool/tools I could use to see what is going on here. >> >> We suspect that the slowness may be related to the ISP doing >> Man-in-the-Middle on non-banking SSL traffic (as per request of >> management), but I really want to rule our side out first.... >> >> Thanks, >> Eli > > > Hi eli, are you caching ? or going direct. Hi, sorry for the slow reply. We are doing some caching, so far we have not optimized it, Calamaris reports our efficiency between 6-10% on different proxies... Thanks, Eliyahu - אליהו