Re: [boost] [thread] Memory usage of threads on 64bit linux

Subject: Re: [boost] [thread] Memory usage of threads on 64bit linux
From: Jeff Flinn (Jeffrey.Flinn_at_[hidden])
Date: 2012-08-27 07:44:12

On 8/26/2012 9:14 PM, Conrad Mercer wrote:
> Hey,
>
> I have been using boost threads on 32bit linux for some time and am very
> happy with their performance so far. Recently the project was moved to a
> 64bit platform and we saw a huge increase in memory usage (from about
> 2.5gb to 16-17gb). I have done profiling and found that the boost
> threads are the source of the huge allocation. Each thread is allocating
> about 10x what it was doing on 32bit.
>
> I profiled using valgrind's massif and have confirmed the issue using
> only boost threads in a separate test application. I also tried using
> std::threads instead and these do not exhibit the large memory
> allocation issue.
>
> I am wondering if anyone else has seen this behaviour and knows what the
> problem is?

Well each thread get's it's own stack.

Jeff