Messages in this thread | | | Date | Mon, 06 Jul 2015 18:45:50 +0100 | From | Daniel J Blueman <> | Subject | Re: [PATCH] mm: meminit: Finish initialisation of struct pages before basic setup |
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Hi Nate,
On Wed, Jun 24, 2015 at 11:50 PM, Nathan Zimmer <nzimmer@sgi.com> wrote: > My apologies for taking so long to get back to this. > > I think I did locate two potential sources of slowdown. > One is the set_cpus_allowed_ptr as I have noted previously. > However I only notice that on the very largest boxes. > I did cobble together a patch that seems to help. > > The other spot I suspect is the zone lock in free_one_page. > I haven't been able to give that much thought as of yet though. > > Daniel do you mind seeing if the attached patch helps out?
Just got back from travel, so apologies for the delays.
The patch doesn't mitigate the increasing initialisation time; summing the per-node times for an accurate measure, there was a total of 171.48s before the patch and 175.23s after. I double-checked and got similar data.
Thanks, Daniel
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