Hi Steven, El 2 d’abril de 2012 23:56, Steven Chamberlain <ste...@pyro.eu.org> ha escrit: > performance would be better by rebuilding with > extra options from upstream's XENHVM configurations; these add drivers > for optional paravirtualised disk/net devices, and Xen PCI passthrough, > and also set the NO_ADAPTIVE_* options as an optimisation.
Any idea why these are not in GENERIC? What are the drawbacks? I think this would be better discussed with upstream. > Unlike for the other kFreeBSD flavours, the xen.config includes > upstream's own XEN config file rather than being a copy of it. Please take kfreebsd-10 as reference, they all use includes there. > In the > included file is 'DEBUG=-g', which results in a kernel.symbols file > being generated. Lintian flags the file as an > 'unstripped-binary-or-object' and also (presumably a false detection) as > 'statically-linked-binary'. > > A -DWITHOUT_KERNEL_SYMBOLS was added to both kfreebsd-8 and kfreebsd-9. > possibly as a workaround for this. KERNEL_SYMBOLS is the knob intended for user to select this. Note that DEBUG can be set in many places, config file is not the only one. > (actually, I think setting WITHOUT_KERNEL_SYMBOLS to some > value other than 'no' will cause the issue to recur...). This is not how make knobs work. See: http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html > The upstream XEN config file contains MODULES_OVERRIDE="", causing no > modules to be built at all for the "xen" flavour. I don't see a reason > to disable all modules like that, because some would be still useful. Does module loading work on XEN flavor? On PAE it was disabled because it doesn't. Again I think this would be better discussed with upstream. > The "xen" flavour of both kernel series has WITNESS and WITNESS_SKIPSPIN > options enabled which I think are supposed to be turned off for release > builds. Are you sure? What about: # disable extra checks enabled in upstream XEN config nooption INVARIANTS # Enable calls of extra sanity checking nooption INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS nooption WITNESS # Enable checks to detect deadlocks and cycles nooption WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed > Once I have my Xen host system (hopefully tomorrow) I should be able to > properly test and provide diffs to fix some of the above issues. Thanks for looking into this! -- Robert Millan -- To UNSUBSCRIBE, email to debian-bsd-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/CAOfDtXMo5MkEaLv0q2_uA53EzBTTor3MvbjVC=q9736xpdk...@mail.gmail.com
