> Is there a performance hit when using mod_mime_magic with a large > number of images, most of which are gif? yes, there would be a performance drop if mod_mime is not successful, and the fallback mod_mime_magic is called. mod_mime_magic emulates unix 'file' command which derives the file type from content rather then the extension. depending on the magic file in use, this could be a large problem. In the ideal case: apache receives the request, mod_mime returns the mime type, and finally apache uses the kernel sendfile call. mod_mime needs to be loaded before mod_mime_magic. However with mod_mime_magic in the loop, if mod_mime could not determine the mime type, mod_mime_magic then opens the file, determines the mime-type, finally apache sends the file (hopefully with sendfile). Why do you need to use mod_mime_magic? Apache 2 has it disabled by default I believe... > I have ruled out the network, multiple OC48 connections, gigabit > ethernet backbone, full duplex gigabit NIC. > > We see the issue from several external sources. > > The server is Red Hat 3ES, Apache 2.0.48, mod_php 4.3.2. You probably should be running two servers; one for dynamic content, the other for static. I typically run two separate instances with different dns names. I've read about, but never tried, using a static server for the primary that uses a mod_proxy (?) to transparently pass requests to/from the secondary server (same ipaddress, but not port 80) for dynamic content... You should consider moving to apache 2.6; I've seen a significant bump in performance on highly loaded systems. Personally I attribute this to the O(1) scheduler, but I'm no guru... -Vizzini --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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