On Wednesday 25 May 2005 20:18, Patrick Allison wrote: > Blaisorblade wrote: > > Well, this particular error (the build one) should be fixed in -bs... for > > the SMP mode we'll work on it, however SMP support is not very maintained > > because it's supported for now only in TT mode, which is slower... i.e. > > with SKAS on the host you get better performances than with SMP.
> OK, I'll try that branch. TT mode is all that's possible for me, as I > don't control the server (and don't have root). Is there any previous > 2.6 UML patch that actually works with SMP (and would there be a strong > reason for me not to use it)? Hmm, I don't really know... actually SMP worked until very recently IIRC... try 2.6.9 vanilla and/or 2.6.9-bs7. I don't have time to test myself currently. > Incidentally, the fix that was posted here for slirp also worked for me > as well. Slirp now works like a charm. So thanks much for that. :) > I mainly use UML to have a consistent platform > for running simulations on department-maintained machines - basically no > disk accesses while it's running. I haven't noticed a significant > slowdown over the native version, but maybe I wasn't paying close enough > attention. No, simply in this case you won't get almost any slowdown, because as you note this program does not use a lot the kernel services... (memory allocation could still be a problem, but that can only make a little difference). Obviously you must point TMPDIR to a tmpfs / ramfs mount point for UML (as otherwise it'll need to sync its virtual memory to disk). -- Paolo Giarrusso, aka Blaisorblade Skype user "PaoloGiarrusso" Linux registered user n. 292729 http://www.user-mode-linux.org/~blaisorblade ------------------------------------------------------- SF.Net email is sponsored by: GoToMeeting - the easiest way to collaborate online with coworkers and clients while avoiding the high cost of travel and communications. There is no equipment to buy and you can meet as often as you want. Try it free.http://ads.osdn.com/?ad_id=7402&alloc_id=16135&op=click _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
