Dan, There are many factors that go into PCAP capturing at high speeds. In our tests we have been able to get up to about 4Gbps before we saw loss. Since we load balance we were able to run 2 netsniff processes and were able to capture and write between 7 and 8 Gbits per second. This was a beefy box though with external SAS storage balanced over 2 controllers (12Gbps) writing to 30 spinning disks at 4TB each. I would extend your tests beyond 1 minute and run them longer so you can look at things like pdflushing etc. I had to tweak the write cache to get better performance out of the disk so it would write more consistently. Can you specify the specs of the box you are running this on?
Thanks Mike On Sat, Aug 31, 2013 at 4:15 PM, Daniel Martin <[email protected]>wrote: > Hello, > > I have been trying to Stress Test our Systems with 10Gbps Network Traffic. > I have it all going through a Cicso Catalyst Switch and I have SPAN setup > to send all traffic to my netsniff-ng machine. I am very confident the > system physically should be able to handle the traffic. I have the most > recent Sniff-NG software compiled and running. All I am doing is trying to > capture all 10Gbps traffic and also write it to a pcap file. So it might > be possible the writing to a file could be the weak link, I am not sure? I > am doing 1 minute tests and I am getting about 89% packet loss. Perhaps > other people out there have ideas or suggestions? > > Thanks, > > Dan > > > -- > You received this message because you are subscribed to the Google Groups > "netsniff-ng" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "netsniff-ng" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
