On Mon, Mar 25, 2002 at 10:07:25AM -0500, Marcus Brinkmann wrote: > Hi, > > I just found out that > > while touch /tmp/foo; do rm /tmp/foo; done > > causes a lot of disk activity. Further tests showed that the disk is > activated for each rm. Is this a hard requirement? In Linux, the loop > above does not cause any disk activity (except at the beginning and > maybe at the end), it seems to be done completely in the cache.
I found out another thing a few days ago. Have a directory with a lot of files (for example gcc or glibc build tree) and then do "rm -rfv <dir>", it looks like all files are deleted one by one on the hard disk and the next one is deleted after the previous one is written to disk. I think the speed of the filesystem is one of the biggest performance issues in the Hurd. I think ext2fs itself isn't only factor, the Linux drivers with the glue code could also have some performance issues. Jeroen Dekkers -- Jabber supporter - http://www.jabber.org Jabber ID: [EMAIL PROTECTED] Debian GNU supporter - http://www.debian.org http://www.gnu.org IRC: jeroen@openprojects
msg03473/pgp00000.pgp
Description: PGP signature
