Is swap really needed when RAM's aplenty

[Gregory Hosler]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 08/19/2010 10:22 PM, Michael Hennebry wrote:
> On Thu, 19 Aug 2010, Gregory Hosler wrote:
> 
>> If the memory gets fragged and the kernel wants to defrag, e.g. for a memory
>> request from an application, in order to defrag any "dirty" data portions (those
>> pages that have been written to), the kernel *requires* there to be swap.
>> Otherwise there is no place to write the dirty pages out, in order to read them
>> in elsewhere.
> 
> I didn't realize that memory could get fragged.
> I'd thought that one reason for virtual memory
> was allowing pages to be renumbered at will,
> the kernel's will, of course.

virtually memory, yes. physical memory no.

:-)

- -G


- -- 
+---------------------------------------------------------------------+

Please also check the log file at "/dev/null" for additional information.
                (from /var/log/Xorg.setup.log)

| Greg Hosler                                   ghosler at redhat.com    |
+---------------------------------------------------------------------+
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.14 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/

iEYEARECAAYFAkxt1hkACgkQ404fl/0CV/TAEQCeOTi11TAxgeCAEd1woyy+guLi
H+gAoI76eU9/0yta9lDaGBtNcPIaxYbm
=5/xt
-----END PGP SIGNATURE-----