Andrew Morton wrote:
What is the additional overhead, expressed in relative terms? ie: as a
percentage?
Short answer: ~3-4% in a not very scientific test.
Long answer: I timed 3 different runs of a program that created and then closed
a pipe 10 million times on a patched and unpatched kernel. I then added up the
"system" times for each and divided them:
unpatched:
sys 1m53.959s
sys 1m56.083s
sys 1m48.055s
patched:
sys 1m56.899s
sys 1m57.027s
sys 1m57.031s
The result was 1.03803642150033866020.
-- Jeff
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