Fwd: Re: Better default for ParallelGCThreads and ConcGCThreads by using number of physical cores and CPU mask.
jon.masamitsu at oracle.com
Fri Nov 22 23:51:36 UTC 2013
I forwarded the webrev to the runtime mailing list and got this
back. In case you are not on that mailing list, here it is.
-------- Original Message --------
Subject: Re: Better default for ParallelGCThreads and ConcGCThreads by
using number of physical cores and CPU mask.
Date: Fri, 22 Nov 2013 09:58:18 -0800
From: Brandon Mitchell <brandon at twitter.com>
To: Jon Masamitsu <jon.masamitsu at oracle.com>
CC: hotspot-runtime-dev at openjdk.java.net
On Fri, Nov 22, 2013 at 9:24 AM, Jon Masamitsu <jon.masamitsu at oracle.com
<mailto:jon.masamitsu at oracle.com>> wrote:
This is a contribution regarding the number of GC worker threads to
use. Part of the change queries /proc on linux to get the number of
active cores on the platform. The changes are in
Can someone familiar with this code take a look to see
if it is reasonable and done in a way that is consistent
with other /proc queries.
/sys/devices/system/cpu/cpu<N>/topology/thread_siblings_list might be
somewhat easier to parse for this information.
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