On 8/29/06, Burak Gorkemli <burakgmail-dccp@xxxxxxxxx> wrote:
Hi Ian,
Hi Burak, Just replying on the dccp list only - ietf don't need to know implementation details.
I am reading the ccid3 code for a while now and it seems to me that "the interval since the most recent packet loss event" is not taken into account while calculating I_mean, as you and Edgar suspect. The first interval used for calculating i_tot0 in dccp_li_hist_calc_i_mean() should point to "the interval since the most recent packet loss event", but it does not, I guess. In the morning I will debug this more and try to fix it, if all goes well. Actually I did some modifications today but they did not relieve my problems altogether.
Correct. I am sure of that since I wrote that code - you are running the latest patches I presume? Basically how I would write the code is to see if p including the non-loss time is less than p excluding it then change p.
BTW, can you recommend me a tool for debugging the ccid (and dccp) module? I think there is Ostra but you seem to discourage its usage in the Ostra wiki page (http://wiki.linux.net.nz/Ostra).
Ostra is a great tool but it is a little bit out of date at present as Arnaldo has been very busy. I used a mixture of printk's spread around the place and dccp_probe (which is on my website in the patches). Ian -- Ian McDonald Web: http://wand.net.nz/~iam4 Blog: http://imcdnzl.blogspot.com WAND Network Research Group Department of Computer Science University of Waikato New Zealand - 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
