Add basic support for measuring various operations#3

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ananos wants to merge 4 commits intomasterfrom

Commits on Oct 13, 2014

Add timer support.
ananos
committed

Commits on Oct 14, 2014

Merge branch 'master' into timing
ananos
committed

Commits on Nov 10, 2014

Use newer clock_gettime. Time different operations.
papazof
committed

Commits on Nov 11, 2014

Server send message timing breakdown.
papazof
committed