Announcing Fedora Activity Day - Fedora Development Cycle 2009

[Seth Vidal]

On Wed, 3 Jun 2009, Jesse Keating wrote:

> On Wed, 2009-06-03 at 08:55 -0400, Paul W. Frields wrote:
>> If the FAD identifies some tangibles (hardware, etc.) that would help
>> alleviate some of the time problems, I can tell you that Spot and I
>> will do our best to procure them.  From what I've heard others
>> describe up until now, it doesn't seem like there's one clear
>> roadblock in that regard -- just a huge mountain of tasks that our
>> current systems have to chug through for composing, and no matter how
>> you slice it, it takes a lot of time and I/O bandwidth.
>
> Well upgrading all the buildsystem and storage system to 10gigE, and
> replacing the 10TB or so filer with something that has fantastically
> fast disks would certainly reduce the amount of I/O wait time, but
> that's going to cost a /lot/ of money.  We are still trying to find
> where our bottlenecks are.  We had a pretty good handle on things prior
> to delta rpms, but now we've gone from 3~ hour null composes (no changed
> packages) to nearly 9 hour null composes.  There is obviously some
> optimization to be had here.

And the optimization there is fairly well known. We need to read in and 
not change the prestodelta file. It's on my short-ish createrepo list.

-sv