Paul Hammant <p...@hammant.org> writes: >> I don't believe Apache/mod_dav_svn uses TMPDIR when processing a PUT. >> > > I can prove that either Apache or ModDavSvn (or the OS) uses TMPDIR during > a PUT of a very large resource. > > Test 1: leave 3GB free on system drive, try to PUT 15GB file thru DAV into > it's ultimate destination on a driver with 3TB of space. And observe an > error (as I did before) > > Test 2: as #1 but with a TMPDIR export in /etc/apache2/envvars. No error > during the PUT will be the observation.
So what data gets written there? Which process writes it? When I use curl to put a 15GB file into apache my /tmp stays at 92KB used. I don't have TMPDIR set, I don't set TMPDIR for apache. I have also run strace -fetrace=open -p nnn on the apache process to see all the files opened by the apache process. All the files opened are within the the repository itself except for /dev/urandom. Incidentally, the 15GB upload takes 2min 4s. This is on a machine with a core i5 4570 (circa 2013) processor and with the repository on a SATA SSD. -- Philip
