On Sun, Oct 14, 2012 at 3:06 AM, Bai Wei <baiwei...@gmail.com> wrote: > Hi Andy, Thank you for your prompt reply. > > I found the performance problem was caused by 21406 files inside a single > folder, total size of this folder > is 255M. (sorry for this bad layout, but this is not in my control)
... > Client side: > svn version 1.6.11 (r934486) ... > I also tested to checkout this folder on server side machine, with svn > 1.7.7, to tmpfs, > it takes only 16 seconds, this significant improvement must be attribute to > new working copy library (WC-NG) in svn 1.7? > Thank SVN dev team for your continuous efforts in optimization. > > BTW. it's still painfully slow to checkout this repository to hard disk, > if disk IO will be optimized in future version of svn , it will be a good > news. I think if you upgrade your client-side to at least 1.6.17, you'll also see a significant improvement. An issue regarding slow creation of temp-files in directories with a lot of entries has been fixed in that release [1], and that sounds like it might be related. So that's one of the reasons why your 1.7.7-client is faster (and WC-NG also helps a lot of course). The next release, 1.8, will contain further performance improvements, reducing I/O (both client- and server-side). But the work continues of course ... (and contributions are always welcome ;-). [1] http://subversion.tigris.org/issues/show_bug.cgi?id=3719 - Extremely slow checkout on Windows -- Johan
