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Re: Memory allocation jump after running for a while with a largenumber of threads



Hui Huang wrote:

> [...]
> bdf00000 (32 KB)       rw-p (00:00 0)
> bdf08000 (992 KB)      ---p (00:00 0)
> be100000 (32 KB)       rw-p (00:00 0)
> be108000 (992 KB)      ---p (00:00 0)
> be300000 (32 KB)       rw-p (00:00 0)
> be308000 (992 KB)      ---p (00:00 0)
> be500000 (32 KB)       rw-p (00:00 0)
> be508000 (992 KB)      ---p (00:00 0)
> be700000 (32 KB)       rw-p (00:00 0)
> be708000 (992 KB)      ---p (00:00 0)
> [...]

The permission would indicate it's used for the stack guard.  Does the
JVM set a stack guard size?  I'll take a look to see whether there can
be a reason for using such a guard size (note: 992 + 32 = 1024).  Maybe
some kind of overflow.

-- 
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Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
Red Hat         `--' drepper at redhat.com `---------------------------





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