Hi Alan if 8 instances per interface are too many, an option is loading less than 8 queues, passing the number you prefer via RSS parameter at driver insmod.
Alfredo > On 29 Oct 2015, at 11:52, Wang <[email protected]> wrote: > > Hi Alfredo, thanks to your quick reply. > I think my last statement is wrong, because when pfring_open is called for > some physical interface, means that one ring will be created for all queues > of this interface. when the packet rate reach some high value, overruns and > drops happen. > As you mentioned, I should run multiple nprobe instances. So, I run ./pfcount > -i eth1@0 for queue 0 of eth1. It captured about 1/8 of all packets into > this interface. for 82576, I have to create 8 nprobe instances for all 8 rx > queues. That's too much for my box, cause I have 8 ports and that will be 64 > instances. so is there any way to use one instance for more than one queues? > I tried ./pfcount -i multi:eth1@0;eth1@1, but it doesn't work. any idea? > thank you! > > Alan > > > ------------------ 原始邮件 ------------------ > 发件人: Alfredo Cardigliano <[email protected]>; > 发送时间: 2015-10-29 17:03:33 > 收件人: ntop-misc <[email protected]>; > 抄送: (无); > 主题: Re: [Ntop-misc] does nprobe support 82576 multiple channel? > Hi Alan > if you have an high traffic rate, you should use multiple nProbe instances, > one per RSS channel. > > Alfredo > > On 29 Oct 2015, at 09:41, Wang <[email protected] <mailto:[email protected]>> > wrote: > > Hi, guys. found that in nprobe 7, "pfring_open" is called while not > "pfring_open_multichannel", so this means that only one channel used in this > situation. If this is true, for RSS netcard like 82576, will this cause some > performance problem because only one queue works? > > Alan > > _______________________________________________ > Ntop-misc mailing list > [email protected] <mailto:[email protected]> > http://listgateway.unipi.it/mailman/listinfo/ntop-misc > > _______________________________________________ > Ntop-misc mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-misc
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