On 2008-10-25 10:09, Michael Neumann wrote: > Edward O'Callaghan schrieb: >> Michael; >> What are you talking about, I never had this problem ? > > > # hg init > # hg add big > big: files over 10MB may cause memory and performance problems > (use 'hg revert big' to unadd the file)
A quick search gives this: "Mercurial has a couple limitations with file size. For performance reasons, it assumes all files can fit comfortably in memory. As the delta algorithm effectively requires multiple copies in memory, file sizes are limited to about 1/4 available memory. Because 32-bit systems typically have a 3GiB address-space limit, you're effectively limited to 750MiB on such systems." -- Matt Mackall Another limitation in Mercurial is that it uses signed 32bit integers for file-size so files larger than 2GB is not possible. While I'm not familiar with the implementation of git I would not be surprised if it had some similar limitations, fast operations usually require the file to be in memory. The (rather arbitrary) limit of 10MB for printing a warning is apparently because virtual machines running hgweb often don't have more than 64 MB RAM. -- Erik Wikström
