Re: large files and low memory

From

EWEnrico Weigelt <weigelt@metux.de>

Date

Oct 5, 2010, 00:50 UTC

Message-ID

<20101005005003.GA2768@nibiru.local>

In-Reply-To

<AANLkTimbdrAqoWMxiteT5zNYmwHp8M698BEv1FLuiAxx@mail.gmail.com>

* Shawn Pearce <spearce@spearce.org> wrote:

> The mmap() isn't the problem.  Its the allocation of a buffer that is
> larger than the file in order to hold the result of deflating the file
> before it gets written to disk.  
> When the file is bigger than physical memory, the kernel has to
> page in parts of the file as well as swap in and out parts of
> that allocated buffer to hold the deflated file.

cu

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