On 05/24/2016 02:21 PM, Aaro Koskinen wrote:
Hi,
On Mon, May 23, 2016 at 03:40:36PM -0400, Joshua Kinard wrote:
Might try some of those combinations and see if things improve on the Octeon?
IP27 was equally affected by this, minus the bits about RAM and Impact Gfx.
turning off THP, IP30 can run 64KB PAGE_SIZE without issue (compiles of
packages is actually sped up quite significantly under >4KB PAGE_SIZE).
I think with 64KB page size, huge pages (512MB) are never allocated
unless you have insane amounts of memory?
Yes, you need a lot of memory, but more importantly the replacement of
pages with a THP cannot happen unless there are 512MB aligned chunks of
VMAs, and that is rare.
I tried today some builds
with 64KB pages on 4GB system and it was stable, but also AnonHugePages
stayed constantly at zero. But with 4KB pages it is frequently changing,
and crashes in minutes.
A.
