CompileThreshold & BackEdgeThreshold question(s)

[Vitaly Davidovich]

Hi Charlie,

CompileThreshold (10k by default for server) is the number of times a
method must be hit before it's considered "hot" and thus eligible for
compilation.

BackedgeThreshold is similar, but counts loop counters.  In other words, a
method may only get hit a few times but if it runs a long loop (many
iterations), the loop becomes eligible for on-stack replacement compilation
(OSR).

That's how I understand it, but I'm sure someone can correct me or provide
more details.

Vitaly

Sent from my phone
On Aug 3, 2012 1:29 PM, "Charlie Hunt" <chunt at salesforce.com> wrote:

> Could someone offer a "10,000 ft" explanation of CompileThreshold and
> BackEdgeThreshold, how they relate to each other, (if at all), and how they
> differ?
>
> For the Server compiler, of course. ;-)
>
> thanks,
>
> charlie
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