Hello Aneesh, thanks for the feedback!
On Tue, 2019-09-17 at 08:26 +0530, Aneesh Kumar K.V wrote:
> We could possibly avoid that serialize for a full task exit unmap. ie,
> when tlb->fullmm == 1 . But that won't help the Qemu case because it
> does an umap of the guest ram range for which tlb->f
On 9/17/19 2:25 AM, Leonardo Bras wrote:
If a process (qemu) with a lot of CPUs (128) try to munmap() a large chunk
of memory (496GB) mapped with THP, it takes an average of 275 seconds,
which can cause a lot of problems to the load (in qemu case, the guest
will lock for this time).
Trying to fi
If a process (qemu) with a lot of CPUs (128) try to munmap() a large chunk
of memory (496GB) mapped with THP, it takes an average of 275 seconds,
which can cause a lot of problems to the load (in qemu case, the guest
will lock for this time).
Trying to find the source of this bug, I found out most
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