[QA] Release Meeting 2011-12-09

[Jean-Baptiste Lallement]

On 12/09/2011 09:11 PM, Steve Langasek wrote:
> Hi Jean-Baptiste,
Hi Steve,

> On Fri, Dec 09, 2011 at 09:34:43AM +0100, Jean-Baptiste Lallement wrote:
>>   * Boot Speed testing
>>     * Daily boot speed testing run on Desktop i386
>>     * Report: http://reports.qa.ubuntu.com/reports/boot-speed/
>
> Today's test for the Dell Vostro shows that ureadahead is not preloading
> files as intended:
>
> http://reports.qa.ubuntu.com/reports/boot-speed/dell-vostro-3400/2011-12-09_09-59-00/bootchart.png
>
> This could be due to either a bug in ureadahead or a bug in the test
> configuration.  (It does not appear to be caused by using an SSD; looking at
> the device name listed in dmesg, this seems to be a rotational disk model.
> It would probably be helpful if this information were easily visible in some
> sort of summary of the machine information.)
>
> Is the methodology used for boot speed testing described somewhere?  I'd
> like to try to reproduce this and figure out what's happening.  Not having
> ureadahead working correctly causes a huge amount of noise in boot charts;
> for instance, today's chart shows lightdm hitting the disk for a full second
> before it gets around to starting X (which gets counted against the plumbing
> budget), and this almost entirely accounts for the difference in plumbing
> time in yesterday's run vs. today's on this machine.  There's no way to
> tell from the currently available info if this is a regression in lightdm,
> or just noise as a result of ureadahead not running correctly.

I'm CC'ing Patrick who set up and maintains the test for the QA Team and 
can provide all the details.

>
> Thanks,


-- 
Jean-Baptiste
irc: jibel