Re: More latency regressions with 2.6.11-rc4-RT-V0.7.39-02

Hugh Dickins
2005-02-25T05:59:14Z

On Thu, 24 Feb 2005, Lee Revell wrote:
> On Thu, 2005-02-24 at 08:26 +0000, Hugh Dickins wrote:
> >
> > If we'd got to it earlier, yes. But 2.6.11 looks to be just a day or
> > two away, and we've no idea why zap_pte_range or clear_page_range
> > would have reverted. Nor have we heard from Ingo yet.
>
> It's also not clear that the patch completely fixes the copy_pte_range
> latency. This trace is from the Athlon XP.

Then we need Ingo to investigate and explain all these reversions.
I'm not _blaming_ Ingo for them, but I'm not familiar with his patches
nor with deciphering latency traces - he's the magician around here.

Hugh