On Fri, Jun 11, 2010 at 10:59 AM, Boris Epstein <borepstein at gmail.com> wrote: > On Wed, Jun 9, 2010 at 3:47 PM, Jerry Franz <jfranz at freerun.com> wrote: >> On 06/09/2010 12:32 PM, Boris Epstein wrote: >> >> Eero, >> >> I've got 4 GB of swap. At the moment all 4 GB less 100 MB of it is >> available. That logically should be enough to allow me to upload a 2 >> GB file, I would think. >> >> >> Looking at the bugtracker: http://bugs.centos.org/view.php?id=3118 >> >> "PHP is not built with large file support on 32 bit x86, probably other 32 >> bit platforms, all releases of CentOS 4 >> Additional Information I verified that upstream does not have this problem. >> It is severe enough for my use (scientific processing) that I am changing >> OS." >> >> While the report is for CentOS4, it may be related to your problem. >> >> -- >> Benjamin Franz >> >> >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> http://lists.centos.org/mailman/listinfo/centos >> >> > > OK, at least part of it could have been related to the machine being > 32 bit. I am currently playing with a 64 bit machine. I can set my > upload_max_filesize = 2G and that works fine; however, post_max_size > is a problem. if I set it to 2 G it seems to fail (no POST > transactions go through, it seems). If I set it just a tad lower (what > I have now is post_max_size = 1948M ) it works fine. So the cutoff > limit is somewhere in the 2G neighborhood. > > Any idea why that would be? Is there a parameter anywhere that limits > how far post_max_size may go? The total memory setting I use is way > above ( memory_limit = 6G ) and that seems not to cause any issues. > > Thanks for your advice everybody. > > Cheers, > > Boris. > Here's what further research on the topic indicates: it is unclear whether or not PHP can handle files in excess of 2 GB in size. If it can that would still be a relatively recent achievement. So in short it sounds like - at this point in time - it may be safest simply not to try to handle files that size. See here: http://www.bigresource.com/PHP-is-there-a-limit-to-post_max_size--1sjou1Ke.html http://www.bigresource.com/PHP-PHP-2GB-filesize-limit-pfHnjwXh.html http://bugs.php.net/bug.php?id=27792 http://drupal.org/node/787484 Boris.