Messages in this thread | | | Date | Tue, 29 Mar 2016 19:41:05 -0400 (EDT) | Subject | Re: [PATCH v3] sparc64: Reduce TLB flushes during hugepte changes | From | David Miller <> |
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From: Nitin Gupta <nitin.m.gupta@oracle.com> Date: Tue, 29 Mar 2016 14:11:14 -0700
> During hugepage map/unmap, TSB and TLB flushes are currently > issued at every PAGE_SIZE'd boundary which is unnecessary. > We now issue the flush at REAL_HPAGE_SIZE boundaries only. > > Without this patch workloads which unmap a large hugepage > backed VMA region get CPU lockups due to excessive TLB > flush calls. > > Orabug: 22365539, 22643230, 22995196 > > Signed-off-by: Nitin Gupta <nitin.m.gupta@oracle.com>
You really need to put some more work into this, there are lots of config variants you didn't even test.
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