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Subject: Re: [boost] [string] proposal
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2011-01-29 17:32:49


On 1/29/2011 1:18 PM, Dean Michael Berris wrote:
> On Sun, Jan 30, 2011 at 4:39 AM, Steven Watanabe<watanabesj_at_[hidden]> wrote:
>> On 1/29/2011 1:25 AM, Dean Michael Berris wrote:
>>> -- which means the VMM no matter what you do will
>>> actually have to find the memory for you and give you that chunk of
>>> memory. This means potentially swapping pages in/out. You limit this
>>> likelihood by asking for page-sized and page-aligned chunks and using
>>> those properly;
>> Why?
> Why will page-sized/page-aligned chunks avoid the likelihood of
> (unnecessarily) swapping pages in and out? Because if you didn't take
> care that your data would spill over to page boundaries the amount of
> pages you're touching is one more than you need to touch.

One more comment, and then I'm done with this thread.
I agree that page-alignment will help reduce swapping.
What I remain unconvinced about are the benefits of
allocating only single pages.

In Christ,
Steven Watanabe

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