DIY_EFI Digest Friday, November 12 1999 Volume 04 : Number 639 In this issue: mailing list service Mail server stuff and wide band O2 See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Fri, 12 Nov 1999 08:29:12 -0600 From: steve ravet Subject: mailing list service > | John, can you give us an idea what the minimum requirements would be for > | a machine to handle the lists in non digest mode and the WWW traffic? I > | guess a 100 Mbit/sec connection would also be good? > > Hi Steve, > > The load is on the order of 40MBytes+ (on heavy days more like 120M) > each day. I estimate (with diy_efi out of digest mode) from last month > that there are roughly 580k mail messages each month. Operating these > lists in _not_ a small task; a dual channel dedicated ISDN would be > the minimum service if we didn't co-locate. Please make this point > clear to your sister... our bandwidth usage is not insignificant. > > I can run the machine from here, BUT... most likely, someone will have > to physically touch it once a year to do OS upgrades. I would > recommend that I have the machine for a week or two to set it up > before shipping to Dallas. > > john gwynne I get up to DFW a couple times a year for visits so upgrades won't be a problem. I've been browsing Dell and Compaq WWW pages and it looks like we can get a Celeron 64MB type machine for about $1000. I keep hearing about Linux pre-installed but the only OS options I've seen are 98 and NT. Guess we'll need a red-hat CD also. I'll let John handle that if we go this route. As far as one-list and the other free services, the main problem I see is limited file space (5MB) and lack of CGI support. I think we'll run into that at most of the free services which is why I think a dedicated machine is the way to go. Our current machine (according to uname -a) is an "i686", whatever that means (PPro? PII)? It was staggering under the load of non-digest diy_efi, so the machine requirements apparently aren't trivial. Would a 300-600 MHZ Celeron 64MB machine handle things? - --steve - -- Steve Ravet steve.ravet@xxx.com Advanced Risc Machines, Inc. www.arm.com ------------------------------ Date: Fri, 12 Nov 1999 08:56:41 -0600 From: steve ravet Subject: Mail server stuff and wide band O2 Condensing many posts into one... > Date: Thu, 11 Nov 1999 12:14:00 -0800 > From: Thomas Washburn > Subject: Re: [admin] What next.... (MUST READ) > > I've got a Sun server up 24/7 via ADSL that could run the list, > bandwidth permitting. I could also help with configuration or > administration of a co-located machine, if that's needed. The problem with ADSL (at least the ADSL I have) is the bandwidth. Mine is 1.5M/s in, but only 384K/s out. That's probably the opposite of what the list server needs. > ------------------------------ > > Date: Thu, 11 Nov 1999 17:24:19 -0500 (EST) > From: William T Wilson > Subject: Re: [admin] What next.... (MUST READ) > I have a cable modem which I run (exclusively) Linux behind. The > bandwidth is less than it would be for a co-located system but more than > ISDN. The advantage is that I already have the system, the disk space > (hundreds of megabytes), and everything already set up, and know what I am > doing. That and I already foot the bill. There should be plenty of > bandwidth available for a mailing list. I have a domain too. A second > advantage is that the computer is sitting in my basement, therefore is > easy to get at in case of emergency. > > Sorry, though. I don't have the space to host all of team.net for you, > whoever mentioned that ;) William, would there be any problems with your dynamic IP changing? Don't forget, the 120MB/day figure was only for email, there's also WWW and FTP traffic. John says 128k/s is the minimum, which is 10% or so of most home type high speed connections. > Date: Thu, 11 Nov 1999 21:00:54 -0600 (CST) > From: Eric Clark > Subject: Re: [admin] What next.... (MUST READ) > I've got a few colocated servers on a T1, but I'm not able to provide list > services from there. I am willing to provide web and ftp services for > free, I am a full time web programmer and can do custom cgi perl or php > scripts for the site. > > I'm still trying to negotiate a place to install a linux machine provide > mail services. > > I use linux both at home and at work and on my servers that run hoser.com, > and have a lot of experience in this. > > I'm also willing to set up searchable archives, I have experimented with > this in the past so it should be too much trouble. I'd be interested in what you can do with our archives. The current engine is freeWais, and I've had a hard time getting it to recognize and extract fields from our archives. It'd be very nice to be able to search by subject, author, and within date ranges. A search language like altavista uses would also be nice. The archives are huge though, like 4 MB in size each month, at least before digeset mode set in. And that's only diy_efi. Any database would have to be able to handle large sets quickly. Any suggestions there? > Date: Fri, 12 Nov 1999 16:57:03 +1100 > From: Mark Atkinson > Subject: NTK UEGO > > Just visiting from the efi332 list > > Currently I am building a engine management system utilising fully > closed loop mixture control, none of this open loop at idle or WOT > stuff. Anyway it will probably use the honda/toyota (NTK) UEGO. From the > technical papers and patents on these devices they seem pretty > straightforward. Rather than reinvent the wheel, if there is a design > for an analog output interface for this device it would be much > appreciated. Otherwise I will proceed to design and build one, it will > probably have a non linearized 0 - 2.5V output corresponding to the > 13:1/20:1 mixture. If it is of any use to the people on this list, I > will post the circuit when finished. (just the uego interface) Hopefully > around christmas. > > Thanks to Garfield and others for bringing these devices to my attention > and posting the pinouts, part no, patent no and SAE paper numbers. Mark, it goes without saying that there would be tremendous interest in a wide-band O2 sensor. I don't think you would have any problems getting a group buy together for a discount on parts, boards, etc. - --steve - -- Steve Ravet steve.ravet@xxx.com Advanced Risc Machines, Inc. www.arm.com ------------------------------ End of DIY_EFI Digest V4 #639 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".