Yoon Chung ([EMAIL PROTECTED]; Thursday, January 16, 2003 12:47 PM): > Creating a DNSCACHE wouldn't help if you don't at least turn on DNS > LOOKUP.
> Cache hits seem to be pretty good on performance, but LOOKUP will kill > your performance, if your web site is a public one. But it could be a > good idea for intranets. DNS READ will only read from the cache file (not have the performance hit of LOOKUP). I would still expect HOSTALIAS to be faster, but I don't know the algorithms. > Another approach I can think of, if you have large log files of a web > server with users from mixed sources (Internet/Intranet) might be to run > multiple instances of analog, use HOSTEXCLUDE on each instance to > complementarily analyze only the relevant entries (i.e., analog A > excludes B users, and analog B excludes A users), and use your HOSTALIAS > entries on analog B instance only. That'll cut down on the performance > hit for both instances. You can report on them separately, or better > yet, find a way to remerge the output before reporting (for example, use > OUTPUT COMPUTER, remerge the output files, and use ReportMagic). "Remerging" may not produce accurate results. To do that, you should use cache files (http://analog.cx/docs/cache.html) as the intermediary. The problem with merging report files is that they contain incomplete information. For example, if the REFLOOR is set to 1000r and group A has 995 requests for /home/docs.html it won't show in the report. If group B has 1005 requests for /home/docs.html, it WILL show in the report. When merging the two you end up with a "combined" total of 1005 requests for both groups, when the actual value should have been 2000! -- Jeremy Wadsack Wadsack-Allen Digital Group +------------------------------------------------------------------------ | TO UNSUBSCRIBE from this list: | http://lists.isite.net/listgate/analog-help/unsubscribe.html | | Digest version: http://lists.isite.net/listgate/analog-help-digest/ | Usenet version: news://news.gmane.org/gmane.comp.web.analog.general | List archives: http://www.analog.cx/docs/mailing.html#listarchives +------------------------------------------------------------------------
