> Mark, > > 1024 file descriptors were fine until few days ago when the warning > messages started appearing in the cache.log file. I had to reboot the > machine to reset the file descriptors. > > We are still investigating the issue but I believe the cause of it was in > changing the caching policy for Squid. Not all of the content served by > Squid had proper HTTP headers to direct Squid how to cache it. When we > discovered that some of the content was stale and not refreshed we decided > to cache only part of the application content until we fine tune the > caching strategy in our application. This created different traffic > pattern. Squid forwarded most of the request to the application and cached > only a fraction of the content. > > I believe this change in the configuration increased the number of > simultaneously opened file handlers in Squid. > As stated before : Cachemgr -> General runtime informarion can confirm this or not. Also there is another parameter called : Process file description allocation. Which will give more detailed info on fd usage. If you need to increase the number of available fd´s then check the squid FAQ on how to do this. M.