On Tue, Jun 08, 1999 at 03:19:55PM -0700, Brent Fulgham wrote: > Anyone using the hurd for non-trivial tasks (such as compiling > large packages, etc.) can attest to the fact that there is a > noticable difference in speed between the hurd and Linux > running on the same hardware.
Indeed :) > I was wondering if any profiling had been done to determine > where the time is being spent. Is it due to the overhead > of RPC? Is it because of poor swap memory allocation? > Is it something else entirely? AFAIK, there has not been done any profiling. "Making sure that profiling works" is still an item on the task list. Furthermore, a lot of the speed penalty is due to disk access, even sequential access requires one RPC per page or so. It would help a big deal (so is assumed) if there would be another RPC that could collect ranges of pages and send them as a packet. If this description is inaccurate that's because I only have a naive understanding of how things work. You can see this when you "dd if=/dev/hdc of=/dev/null" for example. Watch the blinking of the disk led or the clicking noise. Well, there is of course more, but that's what I assume. Thanks, Marcus -- `Rhubarb is no Egyptian god.' Debian http://www.debian.org finger brinkmd@ Marcus Brinkmann GNU http://www.gnu.org master.debian.org [EMAIL PROTECTED] for public PGP Key http://homepage.ruhr-uni-bochum.de/Marcus.Brinkmann/ PGP Key ID 36E7CD09
