Date: Mon, 26 Oct 1998 16:40:56 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: wollman@khavrinen.lcs.mit.edu (Garrett Wollman) Cc: louie@TransSys.COM, freebsd-net@FreeBSD.ORG Subject: Re: questions of taste.. mbuf header change Message-ID: <199810261540.QAA02570@labinfo.iet.unipi.it> In-Reply-To: <199810261712.MAA19008@khavrinen.lcs.mit.edu> from "Garrett Wollman" at Oct 26, 98 12:12:36 pm
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> > - what, if anything, breaks if there are 8 or 10 bytes fewer space in > > the first mbuf? There was some discussion a while ago about increasing > > MSIZE from 128 to something larger, but this didn't seem to happen. > > Probably local-domain datagram sockets with long path names. Can't > think of anything else. I'm inclined to increase MSIZE to 256 in any > case... from my experience with the previous implementation of dummynet: mbufs are not zeroed on allocation, and that might force you to initialize them in a lot of places. Also i had problems with the user-space ppp, not sure if it was something hardwired in the code or just my fault. In the current implementation i have reverted to standard mbufs and the code is much cleaner and robust. cheers luigi -----------------------------+-------------------------------------- Luigi Rizzo | Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it | Universita' di Pisa tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/ _____________________________|______________________________________ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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