Public bug reported: Squid suffers from a bug or misfeature which makes the maximum_object_size in the supplied configuration file completely ineffective.
If you set debug_options = ALL,2 you will see the following line for objects over 4 MB, that should be cached if you enable it: store.cc(1020) checkCachable: StoreEntry::checkCachable: NO: too big The bug is described here: http://www.spinics.net/lists/squid/msg69855.html In summary: "With adequate debug_options enabled, squid was saying that the object size was too big (I've added the CL (Content-Length), SMOS (store_maxobjsize) and EO (endOffset) variables to the log line). 2014/04/21 00:35:35.429| store.cc(1020) checkCachable: StoreEntry::checkCachable: NO: too big (CL = 33560984; SMOS = 4194304; EO = 268) Clearly, something was wrong with the maxobjsize, that was set in the config to 1Gb and the log was reporting it being set to 4Mb (what I discovered later to be the default value)... So, if you put in your config something like this (like it was in mine): cache_dir aufs /var/cache 140000 16 256 maximum_object_size 1 GB then the maximum_object_size option is processed and you see it at the cachemgr config page but it has no effect as the store data structure parameter maxobjsize was already initialized (with the default value) by parse_cachedir before parsing the "maximum_object_size 1 GB" line, so we have 4Mb (default) effective maximum_object_size. If we have a config with maximum_object_size 1 GB cache_dir aufs /var/cache 140000 16 256 we get the effective maximum_object_size for the store set to 1Gb as expected." The Ubuntu standard configuration file (and probably upstream) have the maximum_object_size line after the cache_dir, where it has no effect. Moving it before the cache_dir line makes it work properly. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: squid3 3.3.8-1ubuntu6.2 ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3 Uname: Linux 3.16.0-30-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.14.1-0ubuntu3.10 Architecture: amd64 Date: Thu May 28 12:56:00 2015 InstallationDate: Installed on 2015-05-17 (10 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) SourcePackage: squid3 UpgradeStatus: No upgrade log present (probably fresh install) mtime.conffile..etc.squid3.squid.conf: 2015-05-28T12:50:57.224228 ** Affects: squid3 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug third-party-packages trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1459638 Title: maximum_object_size has no effect in default configuration file To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/squid3/+bug/1459638/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
