Hi, We are using version 1.6.2. Regards,Giray
> From: anders.bro...@ericsson.com > To: tcpdump-workers@lists.tcpdump.org > Date: Wed, 28 Jan 2015 15:21:10 +0000 > Subject: Re: [tcpdump-workers] Libpcap performance problem > > > Hi, > What version of libpcap are you using? Version >= 1.5.3 uses TPACKET_V3 which > may give an capacity increase. > Regards > Anders > > -----Original Message----- > From: tcpdump-workers [mailto:tcpdump-workers-boun...@lists.tcpdump.org] On > Behalf Of Giray Simsek > Sent: den 28 januari 2015 15:58 > To: tcpdump-workers@lists.tcpdump.org > Subject: [tcpdump-workers] Libpcap performance problem > > Hi, > We are currently working on testing Linux network performance. We have two > Linux machines in our test setup. Machine1 is the attacker machine from which > we are sending SYN packets to Machine2 at a rate of 3million pps. We are able > to receive these packets on Machine2's external interface and forward them > through the internal interface without dropping any packets. So far no > problems. However, when we start another app that captures traffic on > Machine2's external interface using libpcap, the amount of traffic that is > forwarded drops significantly. Obviously, this second libpcap app becomes a > bottleneck. It can capture only about 800Kpps of traffic and only about > 800Kpps can be forwarded in this case. This drop in the amount of forwarded > traffic is not acceptable for us. > Is there any way we can overcome this problem? Are there any settings on Os, > ixgbe driver or libpcap that will allow us to forward all the traffic? > Both machines are running Linux kernel 3.15. > Thanks in advance. > Giray > _______________________________________________ > tcpdump-workers mailing list > tcpdump-workers@lists.tcpdump.org > https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers > _______________________________________________ > tcpdump-workers mailing list > tcpdump-workers@lists.tcpdump.org > https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers _______________________________________________ tcpdump-workers mailing list tcpdump-workers@lists.tcpdump.org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
