On 2013-12-18 14:59:45 -0500, Dong Ye wrote:
> ~20 minutes each run with binary.
> Try your patch now..
> You are right I used -g in perf record. But what I reported was flat (meant
> as a start).
> Expand GetMultiXactIdMembers:
>      3.82%         postgres  postgres                  [.]
> GetMultiXactIdMembers

That looks like a postgres compiled without
-fno-omit-frame-pointer. Without that hierarchical profiles are
meaningless. Very new perfs can also do it using dwarf, but it's unusabl


Andres Freund

 Andres Freund                     http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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