[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xl: xl.conf(5): correct advice re autoballooning vs. dom0_mem
On Tue, 27 Nov 2012, Ian Campbell wrote: > # HG changeset patch > # User Ian Campbell <ijc@xxxxxxxxxxxxxx> > # Date 1354011148 0 > # Node ID 3174dc24e3efb0c5b964c244dbfb0218a03a38cf > # Parent 541b0e1a36c86db5df04988dd4ade5430776a7f2 > xl: xl.conf(5): correct advice re autoballooning vs. dom0_mem. > > The advice was backwards, you should really disable autoballoon if you > use dom0_mem. Also add a reference to the command-line docs. > > Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx> Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> > diff -r 541b0e1a36c8 -r 3174dc24e3ef docs/man/xl.conf.pod.5 > --- a/docs/man/xl.conf.pod.5 Tue Nov 27 10:05:35 2012 +0000 > +++ b/docs/man/xl.conf.pod.5 Tue Nov 27 10:12:28 2012 +0000 > @@ -49,9 +49,9 @@ The semantics of each C<KEY> defines whi > > If disabled then C<xl> will not attempt to reduce the amount of memory > assigned to domain 0 in order to create free memory when starting a > -new domain. You should set this if you use the C<dom0_mem> hypervisor > -command line to reduce the amount of memory given to domain 0 by > -default. > +new domain. You are strongly recommended to set this to C<0> > +(C<False>) if you use the C<dom0_mem> hypervisor command line to > +reduce the amount of memory given to domain 0 by default. > > Default: C<1> > > diff -r 541b0e1a36c8 -r 3174dc24e3ef docs/misc/xen-command-line.markdown > --- a/docs/misc/xen-command-line.markdown Tue Nov 27 10:05:35 2012 +0000 > +++ b/docs/misc/xen-command-line.markdown Tue Nov 27 10:12:28 2012 +0000 > @@ -440,6 +440,11 @@ reservation is unlimited. > For example, to set dom0's initial memory allocation to 512MB but > allow it to balloon up as far as 1GB use `dom0_mem=512M,max:1G` > > +If you use this option then it is highly recommended that you disable > +any dom0 autoballooning feature present in your toolstack. See the > +_xl.conf(5)_ man page or [Xen Best > +Practices](http://wiki.xen.org/wiki/Xen_Best_Practices#Xen_dom0_dedicated_memory_and_preventing_dom0_memory_ballooning). > + > ### dom0\_shadow > > `= <boolean>` > > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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