| Current Path : /usr/share/dstat/ |
Linux gator3171.hostgator.com 4.19.286-203.ELK.el7.x86_64 #1 SMP Wed Jun 14 04:33:55 CDT 2023 x86_64 |
| Current File : //usr/share/dstat/dstat_dstat_ctxt.py |
### Author: Dag Wieers <dag$wieers,com>
class dstat_plugin(dstat):
"""
Provide Dstat's number of voluntary and involuntary context switches.
This plugin provides a unique view of the number of voluntary and
involuntary context switches of the Dstat process itself. It may help
to vizualise the performance of Dstat and its selection of plugins.
"""
def __init__(self):
self.name = 'contxt sw'
self.vars = ('voluntary', 'involuntary', 'total')
self.type = 'd'
self.width = 3
self.scale = 100
def extract(self):
res = resource.getrusage(resource.RUSAGE_SELF)
self.set2['voluntary'] = float(res.ru_nvcsw)
self.set2['involuntary'] = float(res.ru_nivcsw)
self.set2['total'] = (float(res.ru_nvcsw) + float(res.ru_nivcsw))
for name in self.vars:
self.val[name] = (self.set2[name] - self.set1[name]) * 1.0 / elapsed
if step == op.delay:
self.set1.update(self.set2)
# vim:ts=4:sw=4:et