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buildstats: add system state sampling

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/proc/[diskstats|meminfo|stat] get sampled and written to the same
proc_<filename>.log files as during normal bootchat logging. This will
allow rendering the CPU, disk and memory usage charts.

Right now sampling happens once a second, triggered by the heartbeat
event.That produces quite a bit of data for long builds, which will be
addressed in a separate commit by storing the data in a more compact
form.

(From OE-Core rev: 6f4e8180b5b4857eaf6caf410fd3a4a41ed85930)

Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Patrick Ohly
2016-11-30 10:50:01 +01:00
committed by Richard Purdie
parent 5956492c20
commit 8f475b78c9
2 changed files with 71 additions and 0 deletions
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meta/classes/buildstats.bbclass
+24
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@@ -188,3 +188,27 @@ python run_buildstats () {
addhandler run_buildstats
run_buildstats[eventmask] = "bb.event.BuildStarted bb.event.BuildCompleted bb.build.TaskStarted bb.build.TaskSucceeded bb.build.TaskFailed"
python runqueue_stats () {
import buildstats
from bb import event, runqueue
# We should not record any samples before the first task has started,
# because that's the first activity shown in the process chart.
# Besides, at that point we are sure that the build variables
# are available that we need to find the output directory.
# The persistent SystemStats is stored in the datastore and
# closed when the build is done.
system_stats = d.getVar('_buildstats_system_stats', True)
if not system_stats and isinstance(e, (bb.runqueue.sceneQueueTaskStarted, bb.runqueue.runQueueTaskStarted)):
system_stats = buildstats.SystemStats(d)
d.setVar('_buildstats_system_stats', system_stats)
if system_stats:
# Ensure that we sample at important events.
done = isinstance(e, bb.event.BuildCompleted)
system_stats.sample(force=done)
if done:
system_stats.close()
d.delVar('_buildstats_system_stats')
}
addhandler runqueue_stats
runqueue_stats[eventmask] = "bb.runqueue.sceneQueueTaskStarted bb.runqueue.runQueueTaskStarted bb.event.HeartbeatEvent bb.event.BuildCompleted"