yumupdated resource usage

[Geoffrey Leach]

On 12/05/2007 02:43:57 AM, David Timms wrote:
> 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}

Thanks.  The trace of IP addresses suggested that yumupdated might have 
been in a loop probinv various repositories. If the mirrors were out of 
sync that could have been the problem.