"Jan D." <jan.h.d@swipnet.se> writes:

> >
> > The following exhibits abysmal speed within Emacs:
> >
> > (let (process-connection-type) (switch-to-buffer (generate-new-buffer
> > "*test*"))(erase-buffer)(start-process "test" (current-buffer) "sh"
> > "-c" "hexdump -v /dev/zero|dd bs=1 count=100k")(erase-buffer))
> 
> ...
> 
> > The system I see this in is
> > GNU Emacs 21.3.50.3 (i686-pc-linux-gnu)
> > a RedHat 9 system, but I have seen this in practically every Linux
> > system up to now.  Is this a Linux-specific problem, or do others see
> > this as well?
> 
> I could not reproduce this on a slackware (version unknown, but libc 6)
> or a Mandrake 9.0 system.  Maybe running under strace can give some
> indication of the system call that takes time (if that is the issue)?

Here is a more elaborate test file