Re: GC_enable_incremental()

[Andrew Haley <aph at redhat dot com>]

DHollenbeck writes:
 > :
 > 
 > >3) I'm not sure it would help that much, since most of the GC time
 > >in your context (tiny heap, I presume?) is probably spent tracing the
 > >huge root set, and that will still happen with the world stopped.
 > >There are plans to fix this, but it hasn't happened.
 > >  
 > >
 > 
 > I think most of the 57 msecs might be coming from the mechanism used to 
 > "stop the world", not the scanning of the root set.  Is this possible?
 > 
 > I get the same results with a 4 megabyte heap as with a 32 mb heap, both 
 > lead to intermittent 57 msec delays.

Hmm.  This all sounds very familiar.  From the very early days of the
IBM PC, the system timer interrupt was generated at a rate of 18.207
Hz, but that's 55ms.

Andrew.