Run &quot;numastat&quot;. If you only see one &quot;node&quot; column, then these issues don&#x27;t affect you. At Netflix, almost all our systems are single NUMA node.<p>I tested the patches on 1 and 2 node NUMA, and saw 0% performance improvements, for some simple workloads.<p>The paper is also uninformed about scheduler bugs in general. Yes, there have been lots of scheduler bugs (I&#x27;ve worked on more in other kernels too, not Linux, where scheduling is even worse!). Yes, we already have tools for diagnosing them (eg, examining run queue latency as a histogram). Yes, we&#x27;ve already used visualizations too.<p>There&#x27;s information for reproducing the bugs here: <a href="https:&#x2F;&#x2F;github.com&#x2F;jplozi&#x2F;wastedcores&#x2F;issues&#x2F;1" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;jplozi&#x2F;wastedcores&#x2F;issues&#x2F;1</a> . If you think for a second that you&#x27;ve hit these bugs, you should read these steps.