Hi Stephen, Answering your question: there is no diffence if (and only if) there is no gap reordering. If there is gap reordering then packets will get a delay of 0ms or 80ms +/- 15ms. With the patch I sent, packets will get a delay of 50ms or 80ms +/- 15ms. I have read about other network emulators, like NS-2, and they have the option of gap reordering. As I say, I need a fixed delay of 50ms plus all the other usefull stuff that comes with netem. And netem does not allow be nested with himself. Regards, Julio
On 2/25/08, Stephen Hemminger <[EMAIL PROTECTED]> wrote: > On Sun, 24 Feb 2008 12:11:16 -0200 > "Julio Kriger" <[EMAIL PROTECTED]> wrote: > > > Hi! > > I have created this patch to add a fixed delay on packet filtered by > > netem. Soon I will send the patch to iproute2. > > This patch comes from a need I have to delay all packets 50ms, beside > > the actual delay setting, like 30ms +- 15 ms. > > Why is 50ms + 30m +/- 15ms any different than 80ms +/- 15ms > > > This strike, IMMHO, a > > missing point on gap reordering. If I set "gap 5 delay 10ms" every 5th > > (10th, 15th, ...) packet to go to be sent immediately and every other > > packet to be delayed by 10ms. This is ok, but I also need a "fixed" > > delay of 50ms to be applied to all packets. Since netem can't be > > nested with himself (so I can do a fixed delay), I needed this new > > feature on netem. > > The gap stuff is an awkward interface that should/could have been > done better. > > > This patch was create with linux kernel version 2.6.24.2. > > I hope you like it, and it would be great if it goes shiped with the > > next version of the kernel :-)) > > Regards, > > Julio Kriger > > Maybe, but it is getting confusing with all the growth of parameters. > Probably time for a rethink. > -- -- >From the moment I picked your book up until I laid it down, I was convulsed with laughter. Someday I intend reading it. Groucho Marx ---------------------------- Julio Kriger mailto:[EMAIL PROTECTED] -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
