Search Again: Re: Capacity From: Jerry Pasker-Systems Admin. Date: Friday, November 5, 1999 Time: 10:09:00 pm When I see a lot of "Looking up host..." in my browser window, I know that my DNS server is the delay. I'm not heavy into web site development. 99% of my business is as a dial up ISP, and it's pretty competitive out there. At the bottom of the navigator window, people don't want to see "Looking up host www.XYZ.com" they want to see "Host Contacted... Transferring data" and "Transfer complete". I need to keep latency from delayed DNS look ups down to a minimum. Let's see if I got this....... It seems that as long as QDNS Pro has enough RAM to hold all the zone files, more RAM is unnessasary if most of the quirres are inbound from other DNS servers. This would be the situation for someone hosting multiple moderate, or a few busy websites, and few clinet machines using the DNS server. More RAM and CPU time would definately be required if the DNS server was primarily used by a large number of client machines to do DNS lookups. This would be the situation for an ISP with a moderate sized client base, and modem ports. More RAM is better, but too much RAM is bad, unless you need it to hold zone files. The trick is to have enough RAM to hold the cachced entries, enough CPU to parse that cache, but not so much RAM that the CPU can't parse the DNS cache fast enough. Do I understand this right? I've also read Chris's replies, and have come to the conclusion that I should have a ritualistic burning of my 6220, and put it out of it's misery. ;-) Looks like I'll be updating my DNS server. I'm thinking G3 for a web server, and moving the 6400/180 from the web server over to DNS. Any opinions on a 6400/180? Or should I just bite the bullet and jump to a G3, which seems a little over-kill for DNS. Questions, comments, opinions, flames? :-) So, in conclusion, there is no real generic answer, or even rule of thumb to "How much RAM and CPU" does my DNS server need?

Messages In This Thread: Capacity by Steve Dannaway on Nov 5, 1999 at 3:30:00 pm Re: Capacity by Jerry Pasker-Systems Admin. on Nov 5, 1999 at 4:16:00 pm Re: Capacity by andrew kagan on Nov 5, 1999 at 4:23:00 pm Re: Capacity by Jerry Pasker-Systems Admin. on Nov 5, 1999 at 4:23:00 pm Re: Capacity by andrew kagan on Nov 5, 1999 at 4:37:00 pm Re: Capacity by andrew kagan on Nov 5, 1999 at 4:41:00 pm Re: Capacity by Jerry Pasker-Systems Admin. on Nov 5, 1999 at 4:58:00 pm Re: Capacity by andrew kagan on Nov 5, 1999 at 5:29:00 pm Re: Capacity by Jerry Pasker-Systems Admin. on Nov 5, 1999 at 10:09:00 pm Re: Capacity by Men & Mice Support on Nov 5, 1999 at 10:59:00 pm Re: Capacity by Warren Michelsen on Nov 6, 1999 at 12:05:00 am Re: Capacity by Jerry Pasker-Systems Admin. on Nov 6, 1999 at 12:45:00 am