At packet size 1500 bytes I have observed that ring_sendmsg call fails as sock_wmalloc is failed ..
might be becos I have used more than the memory allotted for send buffer of the socket. So should I increase the socket buffer size ?? currently I am using the default values. Regards, Ajith <http://www.codingfreak.in> On Wed, Oct 17, 2012 at 1:59 PM, Luca Deri <[email protected]> wrote: > On 10/17/2012 10:19 AM, Ajith Adapa wrote: > > But does NAPI comes into picture in case of packet transmission ?? > > it does not > > > Yeah I have observed that PF_RING has an advantage of 10-15% but both the > application hardly can generate at half the rate. > > I know, standard PF_RING focuses on RX > > Luca > > But seems PF_RING uses more processing power sometimes around 20-30% more > than a PACKET_MMAP application. > > Regards, > Ajith > > > On Wed, Oct 17, 2012 at 1:28 PM, Luca Deri <[email protected]> wrote: > >> Ajith, >> PF_RING is 5-10% faster so they are basically alike as with NAPI the >> performance penalty is there >> >> Luca >> >> >> On 10/17/2012 08:33 AM, Ajith Adapa wrote: >> >> Hi, >> >> I am trying to understand the basic performance differences between linux >> kernel supported PACKET_MMAP and PF_RING (without any DNA and modified >> drivers). >> >> Have you got any numbers regarding transmission performance with basic >> PF_RING and PACKET_MMAP ?? >> >> Regards, >> Ajith >> >> >> _______________________________________________ >> Ntop-misc mailing >> [email protected]http://listgateway.unipi.it/mailman/listinfo/ntop-misc >> >> >> >> _______________________________________________ >> Ntop-misc mailing list >> [email protected] >> http://listgateway.unipi.it/mailman/listinfo/ntop-misc >> >> > > > _______________________________________________ > Ntop-misc mailing > [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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