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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: PC Bozo's World bites again (CNN, too)
On Wed, May 27, 1998 at 03:13:53PM -0700, Vadim Antonov wrote: > Check http://cnn.com/TECH/computing/9805/26/net.access.idg/index.html > > Those bozos are suggesting to reduce MTU from 1500 to 576 > to "improve performance", so packets "won't fragment in > backbones"! The bright idea to fix CTS/RTS setting didn't > come along in their brilliant minds. > > Here goes the average packet size. Down the drain... > > Now what do we do to control the damage? > > I also think it's a good time to measure the gullibilty of > the general public by measuring packet size distribution :) > > --vadim Yes, doing this really does work, and really does improve performance - for Win95. The reason it does has nothing to do with fragmentation (they got that part wrong); the reason has to do with poor handling of larger packets in the IP stack and what I can only consider to be bugs in their code. Cut the MTU, get rid of the problem, and the system "seems" faster on the Internet. The reason is that you aren't dropping frames on the floor any longer. Does it suck in REALITY for the network packet size averages? Yes. Does this have anything to do with CTS/RTS and flow control? Nope. Its a genuine, no-bullshit, honest-to-god probelm in the code that is worked around by doing this. Go talk to Mister Softee about the millions of copies of Win95 that are out there IP stacks that make this an "optimization". But until then, expect it to be done, because it really does make the connection work better. -- -- Karl Denninger ([email protected])| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost
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