Messages in this thread | | | Date | Sat, 22 May 1999 03:27:27 +0200 (CEST) | From | Andrea Arcangeli <> | Subject | Re: [patch] TCP/IP delacks disabled with MPI |
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On Fri, 21 May 1999, David S. Miller wrote:
> Date: Fri, 21 May 1999 19:56:29 +0200 (CEST) > From: Andrea Arcangeli <andrea@suse.de> > > Right now the low bound is the RTO that is lowbound to 200msec > itself. If you decrease the lowbound of the rto then also the ato > will decrease. > >And unless you come up with some clever idea, if you implement >decreasing the RTO lower bound you will crap out completely with all >BSD'like TCP stacks where this is the smallest resolution of their TCP >timers. Read the commentary in tcp_input.c about "HZ/5" etc.
I see the problem with BSD stacks in decreasing the low-bound of the RTO. I agree with Josip that 200msec is an high number. But really I am not too much worried about the RTO lowbound since the fast-retrans should avoid me to lose performances even if the rto timeout won't expire very shortly.
My point is that the BSD issue has _nothing_ to do with the low-bound of the linux-_ato_ (that right now as side effect of the rto-lowbound is forced to be lowbound to 200msec too).
Andrea Arcangeli
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