"Chris Frey" <cdfrey@foursquare.net> wrote in message news:20060429021716.GA26100@foursquare.net...
On Thu, Apr 20, 2006 at 03:21:47PM -0400, Caleb Epstein wrote:
Beman, is this on your radar screen at all? I last tried to ping you about it in March.
To refresh, Boost.Filesystem seems to use the POSIX pathconf call excessively, which hurts performance when doing recursive operations like UNIX's find(1) command.
Performance has been a problem with Boost::Filesystem for at least a year. Back when I mentioned it, the "party line" :-) was that the API was top priority and performance would be something that could be looked at later.
With the standards committees looking at including Boost::Filesystem in TR2, I think performance is imporant enough to be looked at by now.
AFAIK, all performance issues have been resolved. The pathconf issues was only resolved recently, but the need for directory iteration to cache status was fixed quite a while ago, as were interface changes so that several status queries regarding the same file don't result in disk accesses unless so desired. So you may want to checkout the current CVS head to see if whatever performance problem you were seeing is still an issue. Part of the problem may be that the current Boost release process is so lengthy that changes made to CVS last Fall still haven't appeared in an official Boost release. I've got a proposal about ready to address that problem, and will post something in 10 days or so. --Beman