Re: Problem with (Saturn) Profiler
Re: Problem with (Saturn) Profiler
- Subject: Re: Problem with (Saturn) Profiler
- From: Jeffrey Oleander <email@hidden>
- Date: Fri, 30 Jan 2009 06:35:44 -0800 (PST)
> On Thu, 2009/01/29, Rick Altherr <email@hidden> wrote:
> From: Rick Altherr <email@hidden>
> Subject: Re: Problem with (Saturn) Profiler
> To: "Dieter Oberkofler" <email@hidden>
> Cc: "Xcode Users" <email@hidden>
> Date: Thursday, 2009 January 29, 14:04
> Is there a specific reason you need exact function timing
> of _every_ function in a given code path? Most of the time
> you don't need that and can answer questions related to
> performance by a combination statistical sampling and
> tracing specific functions.
Uh, because it seems more like the REAL THING and
less like voodoo or random shooting in the dark?
And because once you've figured out how to wire it
up it's easier to check _every_ function than it
is to wire in a lot of exceptions and exceptions
to exceptions, and then find out, whoops, the
sample didn't reflect proportions of time it was
spending in the performance critical routines
after all.
Or at least that's been my experience. The only
down-side is the massive performance over-head
while you're running the test and the massive
load of data from the vast majority of routines
that, once you've run it, you know don't need
your attention.
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