As a general rule, DNS helper applications are faster than analog at DNS lookups. Which one to use? I used "xdns" but now use "jdresolve". I liked the ability of "xdns" to merge DNS files, remove old entries, and warn me if two names were assigned to one IP. It was easy to install and configure, and the author quickly replied to a question that I had about using the application. I switched to "jdresolve" for its recursion feature (faking a hostname based on the network that the IP belongs to). After switching, I was impressed by its end-of-run report that provides information that is useful for optimal configuration of the app. Both apps were quick when resolving DNS for 20 MB log files (gzip size at best compression). There are, as you noted, quite a few helpers for DNS resolution. If you look through this list's archives (URI at end of every message to list), you are likely to find periodic discussion and recommendations about the various helpers.
-- Duke P.S. Since you mentioned your platform, I should probably mention that I used "xdns" on a 5 or 6 year old box with Solaris 6 & 7, and "jdresolve" on same with Solaris 7 & 8. Kai Schaetzl wrote: >I'm contemplating going from analog dns resolution to a helper. There >are about a dozen listed. What are the recommendations for Linux? >Or, other question: is "outsourcing" dns res worth it? >If it's crucial for the recommendation: >The Apache log files to process are *big* and range from 10 MB >upwards per day. They are getting processed once to a daily analog >cache file and then deleted. Even this gzipped cache file is 0,5 - 1 >MB of size. > > >Kai > >-- > >Kai Schätzl, Berlin, Germany >Get your web at Conactive Internet Services: http://www.conactive.com >IE-Center: http://ie5.de & http://msie.winware.org > +------------------------------------------------------------------------ | This is the analog-help mailing list. To unsubscribe from this | mailing list, go to | http://lists.isite.net/listgate/analog-help/unsubscribe.html | | List archives are available at | http://www.mail-archive.com/analog-help@lists.isite.net/ | http://lists.isite.net/listgate/analog-help/archives/ | http://www.tallylist.com/archives/index.cfm/mlist.7 +------------------------------------------------------------------------
