On Fri, 2010-10-15 at 10:02 +0300, Pekka Enberg wrote: > On Fri, Oct 15, 2010 at 2:44 AM, richard -rw- weinberger > <[email protected]> wrote: > > On Thu, Oct 14, 2010 at 9:50 PM, Arjan van de Ven > <[email protected]> wrote: > >> On 10/14/2010 11:27 AM, richard -rw- weinberger wrote: > >>> > >>> Hi Arjan! > >>> > >>> This commit causes some problems on UML. > >>> > >> that is extremely weird. > >>> > >>> The kernel freezes after a few seconds until it gets some input. > >>> e.g: When I run top it stops refreshing the process list until i > press a > >>> button. > >> > >> a slab timer change (to not be as critical) causing global timer > issues.... > >> that's very obviously not a problem with this patch. > >> has this been seem anywhere except UML ? > > > > A small update: > > It seems that CONFIG_NO_HZ is broken on UML. :-( > > > > CONFIG_NO_HZ + CONFIG_SLAB: works > > CONFIG_NO_HZ + CONFIG_SLAB + your patch: broken > > CONFIG_NO_HZ + CONFIG_SLUB: broken > > > > CONFIG_SLAB + your patch: works > > CONFIG_SLAB: works > > CONFIG_SLUB: works > > Thanks for testing! Thomas, Ingo, Peter, I'm not sure who maintains > CONFIG_NO_HZ so I CC'd you. The problem here is that Arjan's > deferrable timers patch in SLAB triggered something that looks like a > latent bug with UML and NOHZ.
Thomas does mostly, but if its UML specific, I guess its Jeff Dike you'll be wanting to talk to, since he's the arch maintainer. ------------------------------------------------------------------------------ Download new Adobe(R) Flash(R) Builder(TM) 4 The new Adobe(R) Flex(R) 4 and Flash(R) Builder(TM) 4 (formerly Flex(R) Builder(TM)) enable the development of rich applications that run across multiple browsers and platforms. Download your free trials today! http://p.sf.net/sfu/adobe-dev2dev _______________________________________________ User-mode-linux-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
