On Wed, 2010-05-12 at 11:06 +1000, Michael Neuling wrote: > > > We probably only do the remove on < 1% of the hptes now. So I doubt we > > > would get a speedup since most of the time we aren't do the remove > > > anymore. > > > > It would be nice to have some actual numbers. Could you add some > > counters and print the results at the end? (Or don't you have any > > way to print things at that stage?) > > Printing is hard at that point but I think we can do it. I'll try to > when I get some time.
A version of udbg_putcLP() that uses a raw hcall should work, or there was code added to purgatory recently to print to the HV console which you could nick. > A heavily loaded system which kdumps will need a lot more hptes removes > than kexec, so stats for both these cases might be useful also. Yeah, or even a system that is kexec'ed while lots of stuff is still running. cheers
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