* [PATCH] Suggested threads should be double the number of cores.
@ 2012-03-23 9:37 Robert P. J. Day
2012-04-03 21:28 ` Saul Wold
0 siblings, 1 reply; 3+ messages in thread
From: Robert P. J. Day @ 2012-03-23 9:37 UTC (permalink / raw)
To: OE Core mailing list
Documentation suggests that the number of threads should actually be
*double* the number of cores.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
---
the yocto docs i've seen do suggest that the suggested number is
double the number of cores, unless that's wrong.
diff --git a/meta/conf/local.conf.sample b/meta/conf/local.conf.sample
index 5679c03..505ec67 100644
--- a/meta/conf/local.conf.sample
+++ b/meta/conf/local.conf.sample
@@ -24,7 +24,7 @@
#
#PARALLEL_MAKE = "-j 4"
#
-# For a quad-core machine, BB_NUMBER_THREADS = "4", PARALLEL_MAKE = "-j 4" would
+# For a quad-core machine, BB_NUMBER_THREADS = "8", PARALLEL_MAKE = "-j 8" would
# be appropriate for example.
#
rday
--
========================================================================
Robert P. J. Day Ottawa, Ontario, CANADA
http://crashcourse.ca
Twitter: http://twitter.com/rpjday
LinkedIn: http://ca.linkedin.com/in/rpjday
========================================================================
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] Suggested threads should be double the number of cores.
2012-03-23 9:37 [PATCH] Suggested threads should be double the number of cores Robert P. J. Day
@ 2012-04-03 21:28 ` Saul Wold
2012-04-04 11:59 ` Robert P. J. Day
0 siblings, 1 reply; 3+ messages in thread
From: Saul Wold @ 2012-04-03 21:28 UTC (permalink / raw)
To: Patches and discussions about the oe-core layer
On 03/23/2012 02:37 AM, Robert P. J. Day wrote:
>
> Documentation suggests that the number of threads should actually be
> *double* the number of cores.
>
A better clarification with be to mention threading since a quad-core
with hyperthreading enabled would be have 8 virtual cores.
Sau!
> Signed-off-by: Robert P. J. Day<rpjday@crashcourse.ca>
>
> ---
>
> the yocto docs i've seen do suggest that the suggested number is
> double the number of cores, unless that's wrong.
>
>
> diff --git a/meta/conf/local.conf.sample b/meta/conf/local.conf.sample
> index 5679c03..505ec67 100644
> --- a/meta/conf/local.conf.sample
> +++ b/meta/conf/local.conf.sample
> @@ -24,7 +24,7 @@
> #
> #PARALLEL_MAKE = "-j 4"
> #
> -# For a quad-core machine, BB_NUMBER_THREADS = "4", PARALLEL_MAKE = "-j 4" would
> +# For a quad-core machine, BB_NUMBER_THREADS = "8", PARALLEL_MAKE = "-j 8" would
> # be appropriate for example.
>
> #
>
> rday
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] Suggested threads should be double the number of cores.
2012-04-03 21:28 ` Saul Wold
@ 2012-04-04 11:59 ` Robert P. J. Day
0 siblings, 0 replies; 3+ messages in thread
From: Robert P. J. Day @ 2012-04-04 11:59 UTC (permalink / raw)
To: Saul Wold; +Cc: Patches and discussions about the oe-core layer
On Tue, 3 Apr 2012, Saul Wold wrote:
> On 03/23/2012 02:37 AM, Robert P. J. Day wrote:
> >
> > Documentation suggests that the number of threads should actually be
> > *double* the number of cores.
> >
> A better clarification with be to mention threading since a quad-core with
> hyperthreading enabled would be have 8 virtual cores.
>
> Sau!
quite so ... if someone else wants to tweak that, they have my
blessing. :-)
rday
--
========================================================================
Robert P. J. Day Ottawa, Ontario, CANADA
http://crashcourse.ca
Twitter: http://twitter.com/rpjday
LinkedIn: http://ca.linkedin.com/in/rpjday
========================================================================
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2012-04-04 12:09 UTC | newest]
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2012-03-23 9:37 [PATCH] Suggested threads should be double the number of cores Robert P. J. Day
2012-04-03 21:28 ` Saul Wold
2012-04-04 11:59 ` Robert P. J. Day
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