Mailinglist Archive: opensuse-buildservice (119 mails)

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Re: [opensuse-buildservice] Linux scheduler bugs

On Monday 2016-05-02 16:41, Greg Freemyer wrote:

The scheduler bugs seem to affect systems using the NUMA feature of
the scheduler more than those that don't.

lscpu | grep NUMA

provides information about NUMA. Are the servers in the public
instance of OBS using NUMA based hardware. i.e. Do they have more
than one NUMA node?

Theoretical approach: A worker pool is something that is commonly
scaled horizontally rather than vertically, usually because of cost
per work and redundancy feature set. Finding a system with more than
one node is therefore a bit unlikely, and one with more than two is
virtually nonexistent in such a setting.

Practical approach: Run a build job with lscpu in it, and find out.
(Though, virtualization may mask the real value and always yield 1.)
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