Fwd: Re: Request for Review (s) - 8133023: ParallelGCThreads is not calculated correctly
jon.masamitsu at oracle.com
Wed Nov 25 22:50:53 UTC 2015
Widening the review request. This fixed changed the order
of some VM initialization for solaris-sparc with hopefully
the minimum change for other platforms.
-------- Forwarded Message --------
Subject: Re: Request for Review (s) - 8133023: ParallelGCThreads is not
Date: Wed, 25 Nov 2015 14:10:36 -0800
From: Jon Masamitsu <jon.masamitsu at oracle.com>
Organization: Oracle Corporation
To: hotspot-gc-dev at openjdk.java.net
I have a new fix for this bug. My previous fix broke solaris-x86 (I
had not defined an early_initialize() for x86). This fix is slightly
smaller and has the virtue of moving the required initialization
closer to where it is used.
Testing: JPRT build on all platforms, checked by hand that the correct
of GC worker threads are created on later Niagara platforms.
On 11/12/2015 1:31 PM, Jon Masamitsu wrote:
> GC calls VM_Version::calc_parallel_worker_threads() to determine
> the number of GC threads to create. On Sparc it checks for newer
> Niagara hardware to decide the proper scaling of the GC threads with
> the hardware threads. calc_parallel_worker_threads() was being called
> before enough information was gathered to determine the Sparc hardware.
> Moved the gathering of information needed to earlier in the JVM
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