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Re: [Qemu-trivial] [PATCH] exec: avoid unnecessary cacheline bounce on r
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From: |
Michael Tokarev |
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Subject: |
Re: [Qemu-trivial] [PATCH] exec: avoid unnecessary cacheline bounce on ram_list.mru_block |
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Date: |
Tue, 03 Nov 2015 15:34:44 +0300 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.8.0 |
22.10.2015 14:51, Paolo Bonzini write:
> Whenever the MRU cache hits for the list of RAM blocks, qemu_get_ram_block
> does an unnecessary write that causes a processor cache line to bounce
> from one core to another. This causes a performance hit.
Applied to -trivial. A good one! :)
/mjt
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