The site uses a front end caching reverse proxy setup, via two builds of httpd. The back end app server is mod_perl + mysql, run on the same box. I use mod_rewrite to handle the proxy redirects to internal ports on the backend.
I have been seeing some odd errors in the proxy error log, like this:[Tue May 03 16:17:51 2011] [error] (103)Software caused connection abort: cache: error returned while trying to return disk cached data
There are about 160 of those so far today, and there were 388 yesterday.Doing searches on the error string doesn't seem to bring up much info. As far as I can tell, the site is working ok, lots of people using it, and I haven't seen anybody making complaints about broken pages. The requests that seem to produce the error are not badly formed, they are for regular pages. The errors just seem to randomly happen. I don't even know what "103" as an error code is supposed to mean - it's not one of the commonly used HTTP error codes as far as I can tell.
I run htcacheclean every 10 minutes via cron. My cache is two level, with single character directory names, and with the cache cleaning it never exceeds about 170MB. The hard drive is not anywhere near full.
Does anybody have any insights on what causes these errors? I saw a comment somewhere about MaxClients, but it is set to 250 on the proxy, and I don't think it's hitting that limit for me.
Any clues would be much appreciated... Thanks, Neil --------------------------------------------------------------------- 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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