Re: Fix for SLOW PPP Bug

Steve Davies (sdavies@lhr-sys.dhl.com)
Thu, 11 Apr 1996 09:13:40 +0100 (BST)


On Wed, 10 Apr 1996, Mark E. Levitt wrote:

> On Wed, 10 Apr 1996, Linus Torvalds wrote:
>
> > Umm.. I've been looking at the use of "tcp_reset_xmit_timer()", and it may be
> > that we're seeing a timer fight between the delayed acks and retransmissions,
> > where both want to use the same timer and they don't like each other messing
> > with it..
> >
> > Anyway, this would indeed have gotten worse in 1.3.73, because that started
> > using more of the delayed ack logic (the code isn't new per se, it's just used
> > in a new way). That could have made the problem much worse.
> >
> Unfortunatly, this does not fix the problem. I tried this
> patch against a clean 1.3.85. In fact, it seems to make the problem
> slightly worse, but I wouldn't swear to that perception.
>
How are you measuring the improvement, and what are _your_ symptoms which
make you think there is a problem ?

Also, does the problem go-away if you go back to a 1.3.72 kernel without
changing anything else ?

Steve