Date: Thu, 4 Mar 2010 14:49:01 +0200 From: Eugene Perevyazko <john@dnepro.net> To: freebsd-net@freebsd.org Subject: Re: Netgraph performance with ng_ipfw Message-ID: <20100304124901.GA98085@traktor.dnepro.net> In-Reply-To: <C6F35B81AA3747D1B11CAC169F2D8D84@evgen> References: <C6F35B81AA3747D1B11CAC169F2D8D84@evgen>
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On Sat, Jan 23, 2010 at 03:32:11AM +0600, Евгений wrote: > Hi, > I have several routers under heavy load, running FreeBSD 7.2 > These routers use Netgraph to impelement traffic shaping and accouting > (using ng_car and ng_netflow nodes). [skipped] > The second question is about the effectiveness of Netgraph queueing and ng_ipfw node with SMP kernel... [skipped] > one of the ng_queue* processes will take 100% time of one CPU core, when the others will not > process anything. > I have seen such behavior on my routers - at peak load, one of ng_queue* processes takes 100% of one core, > and the other processes are seen in top taking 0% of CPU. > My question is, can it somehow be fixed? I see the same behaviour with ng_nat and ng_ipfw. 7-S as of Nov 2009 on Xeon E5410 (4 cores). 16 ng_nat nodes connected to ng_ipfw. Sometimes one ng_queue eats 100% of one core while other 3 ng_queues sit idle. I'm going to set queueing on all ng_nat's hooks to see if it will help. -- Eugene Perevyazko
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