On Sat, 2015-02-28 at 13:29 -0200, Ivan Baldo wrote: > Hello. > > El 27/02/15 a las 00:21, Ben Hutchings escibió: > >> CONFIG_PARAVIRT_SPINLOCKS > > The help text suggests it should be enabled - yet that's not the > > default! Unfortunately, enabling this will change the module ABI. > This mismatch seems like a bug so I filled > https://bugzilla.kernel.org/show_bug.cgi?id=94011 . > I found a very good written article about this option (why is it > needed, etc.) and benchmarks showing no impact on native performance: > http://wiki.xen.org/wiki/Benchmarking_the_new_PV_ticketlock_implementation . > And here shows big improvement when running one or two busy > virtualized guests: https://lkml.org/lkml/2012/3/23/50 . > Is it too late to enable it for Jessie?
I'm not sure. As I said before, this changes the module ABI on x86, so it requires changing package names again. (That doesn't require any great effort for us, it's just disruptive.) I would have to check this with the release and installer teams. There's at least one other requested change that would also change the module ABI on i386/686-pae (enabling ACPI memory hotplug, and NUMA which it depends on). Ben. > >> CONFIG_NFSD_V4_SECURITY_LABEL > > Help text says 'For now we recommend "Y" only for developers and > > testers.' > Ouch! I looked in a different version of the kernel. Good thing in > current kernels it is stable now. > > Thanks for your answer! > Bye. > -- Ben Hutchings friends: People who know you well, but like you anyway.
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