The reasons for higher CPU usage is that my iptables rules are linear without them CPU usage drops from 60% to 30% pick and during day time it is not more then 20% write now I don't have time to implement ipset As for "Timer frequency" 250 no accurate traffic control at high speeds can be achieved. Also for 6 class C my bandwidth while be 900Mbit not 400Mbit. -----Original Message----- From: Konstantin Astafjev [mailto:konstantin@xxxxxxxxxxxx] Sent: Wednesday, November 08, 2006 3:16 PM To: administrator@xxxxxxxxxxx Subject: Re: Looking for new ideas to improve linux router performace Hello administrator, Wednesday, November 8, 2006, 2:39:08 PM, you wrote: > I have 2 dual CPU Xeon 3Ghz HT enabled Linux routers and each one > of them serving 2 class C with pick traffic on router about 300Mbit full duplex I have 1 common desktop PC router with Athlon64 1800MHz 1GB RAM serving 6 C classes with one Intel server NIC at about 400Mbit load of full duplex in average. > Both routers have about 600 iptables rules, 4000 tc rules with HFSC scheduler and 300 static routes I have more then 1000 iptables rules (not linear, but in tree search variant), about 3000 tc filter rules with HTB, only one default route. And of course I'm using hash tables. BTW, is there any method to classify fwmark in hash tables? Cause right now I have to use TOS for that. :( > I have implemented tc filter hashing which improve performance > > but my goal is to push those machines to the limit with 4 class C > and double above rules and traffic I plan to increase quantity of clients to 8 C classes on this week. > Currently system takes no more then 60% CPU time at pick per > working CPU as every NIC has been set on different CPU, CPU load of mine is about 45% at peak and I have only one CPU. > Currently Linux kernels are coming with timer interrupt of 1000hz > max which in my opinion is not enough If you are about "Timer frequency" then mine is set to 250 HZ. > Also there is no way to serve interrupts from one NIC on two processors. I have a 2 Opteron (4 cores) server right now with 2 tg3 NICs. I'll try to do an experiment to use it as a router. I'm also afraid that the other 3 cores will not be used. :( Very interesting numbers for me. Damn, I though my CPU load is to high, but now I wondering why is yours higher? ;) -- Best regards, Konstantin _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
