Date: Thu, 17 Jul 2014 21:21:51 -0700 From: Adrian Chadd <adrian@freebsd.org> To: zjusomwu@sina.com Cc: freebsd-performance <freebsd-performance@freebsd.org> Subject: Re: about network interrupt Message-ID: <CAJ-Vmom-DhDhQvd%2B3wacsu%2B2r7TVDx0LiEQzT_4aKuGO-YzjLA@mail.gmail.com> In-Reply-To: <20140718014450.388E7718001@webmail.sinamail.sina.com.cn> References: <20140718014450.388E7718001@webmail.sinamail.sina.com.cn>
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Hi! So em(4) doesn't use multiple CPUs on the traffic receive path, so things won't scale all that well. can you retry with an igb(4) NIC? I do have a TODO item to implement generic receive load balancing based on a GSoC project and some of the RSS stuff that is in -HEAD now but it's going to be some time before I can take advantage of it. -a On 17 July 2014 18:44, <zjusomwu@sina.com> wrote: > hi,all: > I'm testing network performance of nginx using freebsd,and I find some= thing strange, that is :while sending huge amount http request to nginx and= use top to monitor this machine, for some machines a lot of cpu is consume= d by interrupt but the others not! And I use one machine for test using dif= ferent version of freebsd,then I find Freebsd 8 not using interrupt but 10 = does! In order to explain this I first guess it is the polling make it d= iff,but after I using "ifconfig em0 -polling" to disable polling of the net= work interface it does no effect! Now I can't explain it. Who can give me s= ome advice? > somwu > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd= .org"
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