yumupdated resource usage

[David Timms]

Geoffrey Leach wrote:
> I'm running yumupdated on F8 with the defaults (no download). It 
> appears to be causing a significant amount of inbound traffic (200MB) 
> every few days. Is this expected?

It is possibly normal.
If there are no updates in any enabled repo, then yum-upatesd should 
download:
- the mirrorlist {usually<1kB}
- the mirrors repomd.xml {2.3kB}

The repomd contains info on the current:
- primary.sqlite     {7.7MB}
- updateinfo.xml.gz  {435.2kB}

If the checksum and size of the previously downloads of those files 
match the repomd.xml, then the above two files won't be downloaded.

If the checks indicate that those two files differ, then at minimum 
thost two will get downloaded. There is updates most days, hence I 
expect that those four files would get updated and downloaded.

Sometimes, an additional thing can go wrong: sometimes mirrors aren't up 
to date. This can lead to a problem where the downloaded repomd.xml 
shows that there has been a change in updates; but each mirror that the 
download of the second pair of files comes from might show that a 
mismatch with the repomd, until one finally has the correct file. This 
could also apply to the packages downloaded during update.

In the last week or so there has been some sizable updates eg two 
firefox {20MB+}, perl {10MB}, python {5MB}, tetex {13MB}, kdegames {11MB}

DaveT.