Hi Paul,
I think the microbenchmarking your link provides is irrelevant. Your link provides benchmarking of doing a fork.
However, we are talking about inserting a callback routine
in a fork and/or an exit. The overhead is a function
call and time spent in the routine. The callback routine
can be configured to "do {} while (0)" if a certain CONFIG
flag is not set.Thanks, - jay
Paul Jackson wrote:
So, I think such a fork/execve/exit hooks is harmless now.
I don't recall seeing any microbenchmarking of the impact on fork/exit of such hooks. You might find such a benchmark in lmbench, or at http://bulk.fefe.de/scalability/.
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