[Scons-users] SCons scaleability with 15000 target nodes: 100% cpu but builder *not* invoked?!?

[William Deegan]

Ringo,

Can you answer the 2nd and 3rd questions asked as well?

Thanks,
Bill

On Jul 26, 2012, at 6:15 AM, Ringo De Smet wrote:


> 

> 

> On 19 July 2012 18:39, William Deegan <bill at baddogconsulting.com> wrote:

> Ringo,

> 

> Does it ever complete? Or doe the CPU goto 100% and then you kill it?

> try: scons --debug=explain 

> And see if you get any useful output.

> 

> Can you try this with a much smaller tarball?

> Are you running out of memory on your system when running SCons?

> 

> 

> SCons is taking 100% CPU while first determining the state of the emitted nodes. If I run SCons under strace, I see numerous fstat invocations passing by. This takes ages and eats all the CPU. Then the builder is invoked and again I see thousands of fstat invocations. Extracting the tar.gz (the builder implementation) is only a fraction of the total execution time.

> 

> Ringo

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