Date: Thu, 1 Feb 1996 11:34:09 -0600 (CST) From: Joe Greco <jgreco@brasil.moneng.mei.com> To: phk@critter.tfs.com (Poul-Henning Kamp) Cc: hackers@freebsd.org Subject: Re: Watchdog timers (was: Re: Multi-Port Async Cards) Message-ID: <199602011734.LAA09158@brasil.moneng.mei.com> In-Reply-To: <9788.823195504@critter.tfs.com> from "Poul-Henning Kamp" at Feb 1, 96 06:25:04 pm
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> > > Optional: NVram for acceleration of NFS &c. sockets > > > and a battery for 4-8 Mb ram. Possibly with a little > > > clock to do refresh so DRAM could be used. (cheaper) > > > > This is something we NEED, in order to do any sort of serious NFS service. > > PrestoServe style devices are handy in many scenarios in addition to NFS - > > news servers and other systems where lots of metadata updates are happening. > > Not to mention what it does to anything that uses a transaction log. > > It doesn't even have to be particular fast, anything faster than a disk > will be a gain. > > > I think it should probably be handled as a separate entity from the rest of > > this (it's not something everyone wants by a long shot). > > My idea was that if you could put the sockets on the board cheaply, > they you might as well just have one board layout. Remember those > boards you could buy for CCI 6/32 and Pyramids with tons of old slow > DRAM's on them ? They heated like hell, but you could really get > some speed out of them, compared to 8" SMD disks. If it's cheap enough to do so, yes. A pair of 72-pin SIMM sockets that could take a wide variety of memory would be cool. ;-) On the other hand, if we are talking about running this across the ISA bus, it may indeed be faster to talk to the disk over a good PCI SCSI controller.. ... Joe ------------------------------------------------------------------------------- Joe Greco - Systems Administrator jgreco@ns.sol.net Solaria Public Access UNIX - Milwaukee, WI 414/546-7968
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