Hi Steven, Excerpts from King, Steven R's message of Tue Apr 22 13:19:51 -0700 2008: > The Network Technologies Lab at Intel has been making great use of iperf > in our testing. We've made some changes to suit our needs:
Great! It's always good to hear about people using Iperf... > 1) Replaced the gettimeofday() call with 'rdtsc' instruction to avoid a > kernel transition in the fast path. Great. This is line with some ideas that have been discussed, but an actual patch would be excellent. > 2) IO threads no longer block on the reporter thread. This change > improved and stabilized performance, particularly for small IOs. Some work has been done on reworking the threading in Iperf but it still needs work. Without seeing your patches I'm not sure if what you've done has been addressed or not already. However, your threading changes sound like they address issues I haven't gotten to you. > 3) Added a sendfile option that uses the sendfile() system call. Some > OSs (Linux) implement sendfile as a zero copy transmit. Cool. That seems useful. > Is anyone actively maintaining iperf anymore? We're interested to work > with a maintainer to get these changes into the main version. I expect > some independent validation will be necessary. I am the maintainer for Iperf these days. I am definitely accepting patches and am doing my best to get them incoporated. I do have somewhat limited time for Iperf but I am generally able to get things done in fits and starts... :) I would definitely love to see the patches. The quickest way to get them merged in at this point is to updated them so they apply against the Subversion trunk at: http://iperf.svn.sourceforge.net/svnroot/iperf/trunk/ If you don't have the cycles to update them against the new code base I'm still interested it will just take longer for me to get to them... Either way if you can post patches on the SourceForge patch tracker: https://sourceforge.net/tracker/?group_id=128336&atid=711373 Finally, the list has moved to SourceForge, it's address is: [email protected] Thanks for getting in touch about this! I look forward to seeing your patches. Cheers, Jon ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Iperf-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/iperf-users
