Dave Dykstra disse na ultima mensagem: > Hi, > > I wanted more throughput for my application than I was able to get with > one gigabit connection, so we have put in place a bonded interface with > two one-gigabit connections agregated into one two-gigabit connection. > Unfortunately, with one squid, re-using objects that are small enough to > fit into the Linux filesystem cache but large enough to be efficent (a > few megabytes each), it maxes out a CPU core at around 140MB/s. This is > a dual dual-core AMD Opteron 270 (2Ghz) machine, so it is natural to > want to take advantage of another CPU. (This is a 64-bit 2.6.9 Linux > kernel and I think I have squeezed about all I am going to out of the > software). At first I tried running two squids separately on the two > different interfaces (without bonding, 2 separate IP addresses) but that > confused the Cisco Service Load Balancer (SLB) we're using to share the > load & availability with another machine so I had to drop that idea. > For much the same reason, I don't want to use to two different ports. > So then the problem is how to distribute the load coming in on the one > IP address & port to two different squids. Two different processes > can't open the same address & port on Linux, but one process can open a > socket and pass it to two forked children. So, I have modified > squid2.6STABLE13 to accept a command line option with a file descriptor > of an open socket to use instead of opening its own socket. I then > wrote a small perl script to open the socket and fork/exec the two > squids. This is working and I am now getting around 230MB/s throughput > according to the squid SNMP statistics. > I use another approach. I run three squids. using two on 127.0.0.2 and .3 which serve as parent. So the Ip address which contacts the remote sites is the IP address of the server. I get very high performance and the setup is easy without helper programs. What was important to me that I can sibling both in order not getting objects cached twice I am curious if you can get higher throuput using sockets or tcp over loopbacks. michel ... **************************************************** Datacenter Matik http://datacenter.matik.com.br E-Mail e Data Hosting Service para Profissionais. ****************************************************
