wrunderwood commented on pull request #96:
URL: https://github.com/apache/solr/pull/96#issuecomment-853452250


   I apologize for the personal comment.
   
   The documentation and name describe a CPU utilization circuit breaker. The 
implementation is a load average metric. Load average is not a CPU utilization 
metric. The limits on the circuit breaker don’t match the range of the metric 
for load average.
   
   The implementation makes an incorrect assumption. That is a bug. It is 
actually a double bug. The implementation does not match the documentation, but 
if you figure out the implementation, the limit on thresholds makes it unusable 
on multi-CPU systems.
   
   wunder
   Walter Underwood
   ***@***.***
   http://observer.wunderwood.org/  (my blog)
   
   > On Jun 2, 2021, at 4:15 PM, Jan Høydahl ***@***.***> wrote:
   > 
   > 
   > Whoever implemented this did not understand how the load average metric 
works.
   > 
   > Please keep the discussion factual and about the code, not the people.
   > 
   > I think the chosen path of having separate LoadAvg and CpuPct 
implementations is better than some extra flag to choose. This keeps the 
configuration more direct and clear, and the documentation of cpuThreshold will 
not be conditional on another parameter - the two impls can be documented 
separate from each other.
   > 
   > —
   > You are receiving this because you authored the thread.
   > Reply to this email directly, view it on GitHub 
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