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1b1ed1a
(Get the code!)
(In reply to comment #4)
> Well, I think there are actually two things at play in this BZ. The original
> request is to shift from using CPUID to serialize gettimeofday to using
> MFENCE/LFENCE for serializing. This should be faster under *full*
> virtualization, so a backport to RHEL-5 might be desirable.
>
<ping>
Has anybody been working on these patches, do we have a ETA as to which release can have this fix ?
> Comment #3, however, talks about something different. In particular, it's
> talking about the Xen kernel, which does indeed have the vsyscall stuff off in
> 64-bit. I'm not entirely sure why; I don't think segmentation protection
> should have anything to do with it. In a quick test, I turned it on, and your
> little benchmark there went from 2m17s on this box to about 30s. I'm going to
> make a new BZ about that issue, since it doesn't really belong here.
Can you please cc me on this BZ.
Thanks,
Alok