Path: utzoo!news-server.csri.toronto.edu!torsqnt!hybrid!scifi!bywater!uunet!overload!dillon From: dillon@overload.Berkeley.CA.US (Matthew Dillon) Newsgroups: comp.sys.amiga.programmer Subject: Re: Virtual Memory Program? Message-ID: Date: 14 Mar 91 17:13:38 GMT References: <1986@public.BTR.COM> <29018.27db6cde@kuhub.cc.ukans.edu> <1991Mar12.055922.27355@Sandelman.OCUnix.On.Ca> Organization: Not an Organization Lines: 24 In article <1991Mar12.055922.27355@Sandelman.OCUnix.On.Ca> mcr@Sandelman.OCUnix.On.Ca (Michael Richardson) writes: >In article <29018.27db6cde@kuhub.cc.ukans.edu> markv@kuhub.cc.ukans.edu writes: > > Not really. It just makes programmable controllers that do DMA even >better. Good DMA controllers can do scatter/gather operations and take >a list of buffers to which they should move the data. >-- > :!mcr!: | The postmaster never | - Pay attention only > Michael Richardson | resolves twice. | to _MY_ opinions. - > HOME: mcr@sandelman.ocunix.on.ca + Small Ottawa nodes contact me > Bell: (613) 237-5629 + about joining ocunix.on.ca! Yes, DMA controllers with linked buffer capability are almost required to get good network throughput on ethernet and other networks, mainly because the host computer need not do any buffer copies of the network data as it constructs the packets. -Matt -- Matthew Dillon dillon@Overload.Berkeley.CA.US 891 Regal Rd. uunet.uu.net!overload!dillon Berkeley, Ca. 94708 USA