[Gllug] performance difference between a swap partition vs a swap file.>>>>>

Nix nix at esperi.org.uk
Thu Dec 3 23:47:44 UTC 2009

On 2 Dec 2009, Steve Kemp spake thusly:

> On Wed Dec 02, 2009 at 10:40:11 +0000, Alain Williams wrote:
>> >   At Bytemark all our machines have been installed and configured
>> >  with file-based swap for at least the past year.
>> What file system type do these swap files live in ?
>   Generally speaking we're using ext3.

ext4 is probably better in this case: the extent-based metadata will
seriously reduce the number of metadata I/Os the system has to carry out
for large files like swapfiles (normally it would cache them, but if
you're swapping, that may not be working so well).
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