<div dir="ltr">There's also the memory dump thing. Personally, I tend to disable swap entirely. YMMV.</div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Mar 15, 2015 at 6:44 PM, Matt Graham <span dir="ltr"><<a href="mailto:mhgraham@crow202.org" target="_blank">mhgraham@crow202.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 2015-03-15 18:13, Michael Havens wrote:<br>
</span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">
I was wondering why Linux uses a swap partition rather than a swap<br>
file. I mean I would think a swap file would be superior since a<br></span>
file's size can fluctuate whereas a partition is static.<br>
</blockquote>
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Historical reasons and performance. A partition is a contiguous area of disk, while a file can be a widely-scattered area of blocks. The kernel can also access a partition directly, while accessing a file incurs unavoidable overhead of going through the filesystem kernel code. This overhead is (almost) invisible in modern high-powered systems with many G of RAM and CPUs >= 2 GHz. When 128M of RAM and 400 MHz of CPU were what was available, people needed to be more concerned about performance.<span class="HOEnZb"><font color="#888888"><br>
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