Hello,

Would a less resource-intensive value, such as 1, be a safer default CPU value 
for confint? I noticed excessive CPU usage on a I.T. administrator-managed 
server which was being three-quarters used by another staff member when the 
confidence interval calculation in an R Markdown document suddenly changed from 
two seconds to ninety seconds because of competition for CPUs between users. 
Also, there is no mention of such parallel processing in ?confint, so it was 
not clear at first where to look for performance degradation. It could at least 
be described in the manual page so that users would know that export 
OPENBLAS_NUM_THREADS=1 is a solution.

--------------------------------------
Dario Strbenac
University of Sydney
Camperdown NSW 2050
Australia
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