On 27.01.2014 15:39, Richard Purdie wrote:
> Its rather sad that people don't appear to read local.conf and then complain
> about slow builds when they're just using a single thread. Most systems have
> more than one core now so we might as well use a more automatic default
> for these values. This may lead to better experiences for new users.
>
> [YOCTO #2528]
>
> Signed-off-by: Richard Purdie <richard.pur...@linuxfoundation.org>
> ---
> diff --git a/meta/conf/local.conf.sample b/meta/conf/local.conf.sample
> index 71856b8..36d33e1 100644
> --- a/meta/conf/local.conf.sample
> +++ b/meta/conf/local.conf.sample
> @@ -18,12 +18,18 @@
> # option determines how many tasks bitbake should run in parallel:
> #
> #BB_NUMBER_THREADS ?= "4"
> +#
> +# Default to setting automatically based on cpu count
> +BB_NUMBER_THREADS ?= "${@oe.utils.cpu_count()}"
> #
> # The second option controls how many processes make should run in parallel
> when
> # running compile tasks:
> #
> #PARALLEL_MAKE ?= "-j 4"
> #
> +# Default to setting automatically based on cpu count
> +PARALLEL_MAKE ?= "-j ${@oe.utils.cpu_count()}"
> +#
> # For a quad-core machine, BB_NUMBER_THREADS = "4", PARALLEL_MAKE = "-j 4"
> would
> # be appropriate for example.
On our Fedora-18 build host this change leads to the following exception. :(
----------------------> snip <-------------------------
Loading cache...done.
Loaded 2167 entries from dependency cache.
Parsing recipes...done.
Parsing of 1729 .bb files complete (1727 cached, 2 parsed). 2168 targets, 85
skipped, 1 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies
Build Configuration:
BB_VERSION = "1.20.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "Fedora-18"
TARGET_SYS = "arm-angstrom-linux-gnueabi"
MACHINE = "hikirk"
DISTRO = "angstrom"
DISTRO_VERSION = "v2013.12"
TUNE_FEATURES = "armv5 thumb dsp"
TARGET_FPU = "soft"
meta-hipos = "(nobranch):6f2ad6754c9c9ddd6f1c5505e584e0eb62cfcf83"
meta-hipos-kirkwood = "(nobranch):1a43f75e217fea3c6b4493536b3b66945ce53921"
meta-hipos-fsl = "(nobranch):ad3beec4157a96d0c506969a29d14f6354e7406f"
meta-fsl-arm = "(nobranch):af392c22bf6b563525ede4a81b6755ff1dd2c1c6"
meta-fsl-arm-extra = "(nobranch):07ad83db0fb67c5023bd627a61efb7f474c52622"
meta-java = "(nobranch):9dfb7ecb87e67052e94641d6e02907c582264217"
meta-angstrom = "(nobranch):8fcd781b777a7a94f2b97514c9691a2b5c74eaf2"
meta-oe
meta-systemd
meta-multimedia
meta-networking
meta-efl
meta-gnome = "(nobranch):eb4563b83be0a57ede4269ab19688af6baa62cd2"
meta = "(nobranch):e86622a932bbd0acdea67ecfb15c8b06c27353d8"
NOTE: Preparing runqueue
ERROR: An uncaught exception occured in runqueue, please see the failure below:
ERROR: Running idle function
Traceback (most recent call last):
File "/CACHE/jenkins-workspace/hipos/bitbake/lib/bb/runqueue.py", line 1111,
in RunQueueExecuteScenequeue.__init__(rq=<bb.runqueue.RunQueue instance at
0x1534b2d8>):
> self.number_tasks = int(self.cfgData.getVar("BB_NUMBER_THREADS",
True) or 1)
self.scheduler = self.cfgData.getVar("BB_SCHEDULER", True) or
"speed"
File "/CACHE/jenkins-workspace/hipos/bitbake/lib/bb/data_smart.py", line 516,
in DataSmart.getVar(var='BB_NUMBER_THREADS', expand=True, noweakdefault=False):
def getVar(self, var, expand=False, noweakdefault=False):
> return self.getVarFlag(var, "_content", expand, noweakdefault)
File "/CACHE/jenkins-workspace/hipos/bitbake/lib/bb/data_smart.py", line 606,
in DataSmart.getVarFlag(var='BB_NUMBER_THREADS', flag='_content', expand=True,
noweakdefault=False):
cachename = var + "[" + flag + "]"
> value = self.expand(value, cachename)
if value is not None and flag == "_content" and local_var is not
None and "_removeactive" in local_var:
File "/CACHE/jenkins-workspace/hipos/bitbake/lib/bb/data_smart.py", line 344,
in DataSmart.expand(s='${@oe.utils.cpu_count()}', varname='BB_NUMBER_THREADS'):
def expand(self, s, varname = None):
> return self.expandWithRefs(s, varname).value
File "/CACHE/jenkins-workspace/hipos/bitbake/lib/bb/data_smart.py", line 334,
in DataSmart.expandWithRefs(s='${@oe.utils.cpu_count()}',
varname='BB_NUMBER_THREADS'):
except Exception as exc:
> raise ExpansionError(varname, s, exc)
ExpansionError: Failure expanding variable BB_NUMBER_THREADS, expression was
${@oe.utils.cpu_count()} which triggered exception AttributeError: 'module'
object has no attribute 'cpu_count'
----------------------> snip <-------------------------
Any ideas? A missing python package at the build host? ...?
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