-profile and threaded code

David Ferenczi raggae at ferenczi.net
Sun Mar 29 12:43:09 PDT 2009

BCS wrote:

> Hello BCS,
>> I have a program that runs an "easily" parallelizable loop. When I run
>> it as a single thread it only takes about 10% longer than 2 threads
>> (on a dual-core). I'm trying to track down the lossed time and am
>> wondering if turning on -profile is even worth looking at. The concern
>> is that it might not be thread safe or might just skew the result so
>> much as to be useless.
> Well it seems that runing threded code with -profile gives a seg-v. So I
> guess that answers that.

See last comment of Walter:

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