Em Thu, Dec 13, 2007 at 12:21:20AM +0100, Alessio Botta escreveu: > > > Arnaldo Carvalho de Melo ha scritto: >> Em Tue, Dec 11, 2007 at 02:21:28PM +0000, Gerrit Renker escreveu: >>> | I am new of this mailing list and I am really interested in the >>> | measurements you are performing with DCCP. >>> This was more of a regression test, as there had been recent changes in >>> the test tree, to see that the kernel (not userspace) still performs in >>> a predictable way. >>> >>> | Which tool are you using ? Are you using Iperf for such measurements ? >>> The setup is the one from >>> http://www.linux-foundation.org/en/Net:DCCP_Testing#Regression_testing >>> and, yes, it uses iperf. >>> >>> | Have you ever heard about D-ITG ? >>> >>> | You can find more information here: >>> | http://www.grid.unina.it/software/ITG >>> | | I am one of the authors of such platform and I have also >>> | performed some very preliminary tests with DCCP. >>> | | I would be very glad to have your opinion on that and I'm very >>> interested >>> | in improving its features, also with specific regard to the support of >>> | transport protocols. >>> | It is a very nice tool with many features. I only ran simple tests with >>> it (version 2.6), >>> again only as basic sanity tests -- the throughput result was similar to the one tested with >>> iperf. >>> >>> I think that the tool has more to offer and can help improve/extend DCCP testing. >>> Here is my list of points, hoping that the others will add theirs, too: >>> >>> * would be good to have a standardised set of scripts, for comparison/benchmarking >>> >>> * the built-in VoIP module only works for UDP -- is it possible to port this to DCCP? >>> * as per previous email, more complex traffic scenarios would be good, >>> in particular >>> - switching on/off background traffic at times to observe TCP/flow-friendliness >>> - running multiple DCCP flows in parallel and at overlapping times >> >> Does this tool records results in a database keyed by kernel >> version/buildid for us to use it as a regression tool? > > No, it does not record the results in a database. This feature has to be > added by using > some perl-like scripts. > >> >> Something that would produce results around these lines: >> >> "WARNING: test #23 counter #3 variance bigger than specified since the >> last kernel tested (git cset 55ed793afb4a8025d33a8e6a5f2f89d5ac4d8432)!" > > Yes, we can work on building some scripts for this. That would be very nice of you and of great help to the DCCP effort. Being able to compare metrics automatically as we go evolving the codebase would be very, very interesting. - Arnaldo - To unsubscribe from this list: send the line "unsubscribe dccp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
