Thanks Andrew. Sounds like you were able to resolve the issue I was seeing. It's late and my brain isn't fully engaged, so when I can concentrate I'll see about applying your patch for the 3.1 release.
http://tcpreplay.synfin.net/trac/attachment/ticket/180 On 5/15/07, Andrew Edgecombe <[EMAIL PROTECTED]> wrote: > Aaron Turner wrote: > > >On 5/14/07, Andrew Edgecombe <[EMAIL PROTECTED]> wrote: > > > > > >>Hi all, > >>I've come across an issue when using the -M option on tcpreplay to > >>specify the outgoing data rate. > >> > >>I tend to use tcpreplay to replay pcap files that contain small numbers > >>of packets, but replay them with -l loops. > >>The issue that I found was that when replaying pcap files containing > >>single packets that the -M option would replay at > >>full speed instead of the requested rate. > >> > >>Attached is a (very simple!) patch file against tcpreplay-3.0.1. I've > >>found this useful as it allows me to set rates for my > >>single packet pcap files. > >> > >> > > > >Hi Andrew, > > > >I'm going to have to think about this corner case a little more. > >Unfortunately your patch breaks the common case where people have > >pcap's with many packets and use the loop option. > > > >For the record, the test I ran was: > > > >./src/tcpreplay -i en0 -l 3 test/test.pcap > > > >should take ~15sec to run (test/test.pcap is about 5 seconds long), > >but with your patch it took about 5.5sec. > > > >-Aaron > > > > > Hi Aaron, > Sorry about that - I left off the "ymmv" clause :-) > > I've had a bit more of a solid look at it and I think that I've got > something that should work for all cases. > > The attached patch is against tcpreplay-3.0.1. > To apply the patch from within the tcpreplay-3.0.1 directory: > patch -p1 < tcpreplay-3.0.1.patch2 > > The results that I'm seeing now: > > tcpreplay -i eth0 -q -C -l3 ./test/test.pcap > Actual: 300 packets (31887 bytes) sent in 15.16 seconds > Rated: 2125.6 bps, 0.02 Mbps/sec, 20.00 pps > > Statistics for network device: eth0 > Attempted packets: 300 > Successful packets: 300 > Failed packets: 0 > Retried packets: 0 > > tcpreplay -i eth0 -q -C -l3 -m3 ./test/test.pcap > Actual: 300 packets (31887 bytes) sent in 5.16 seconds > Rated: 6355.9 bps, 0.05 Mbps/sec, 59.80 pps > > Statistics for network device: eth0 > Attempted packets: 300 > Successful packets: 300 > Failed packets: 0 > Retried packets: 0 > > tcpreplay -i eth0 -q -C -l1000000 -M250 singlepkt.pcap > Actual: 1000000 packets (1024000000 bytes) sent in 31.34 seconds > Rated: 32995528.0 bps, 251.74 Mbps/sec, 32222.20 pps > > Statistics for network device: eth0 > Attempted packets: 1000000 > Successful packets: 1000000 > Failed packets: 0 > Retried packets: 0 > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Tcpreplay-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/tcpreplay-users
