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97 lines
3.2 KiB
97 lines
3.2 KiB
try:
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import resource
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except ImportError:
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pass # Will fail on Win32 systems
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import time
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from flask_debugtoolbar.panels import DebugPanel
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_ = lambda x: x
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class TimerDebugPanel(DebugPanel):
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"""
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Panel that displays the time a response took in milliseconds.
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"""
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name = 'Timer'
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try: # if resource module not available, don't show content panel
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resource
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except NameError:
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has_content = False
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has_resource = False
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else:
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has_content = True
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has_resource = True
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def process_request(self, request):
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self._start_time = time.time()
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if self.has_resource:
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self._start_rusage = resource.getrusage(resource.RUSAGE_SELF)
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def process_response(self, request, response):
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self.total_time = (time.time() - self._start_time) * 1000
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if self.has_resource:
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self._end_rusage = resource.getrusage(resource.RUSAGE_SELF)
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def nav_title(self):
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return _('Time')
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def nav_subtitle(self):
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# TODO l10n
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if not self.has_resource:
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return 'TOTAL: %0.2fms' % (self.total_time)
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utime = self._end_rusage.ru_utime - self._start_rusage.ru_utime
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stime = self._end_rusage.ru_stime - self._start_rusage.ru_stime
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return 'CPU: %0.2fms (%0.2fms)' % (
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(utime + stime) * 1000.0, self.total_time)
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def title(self):
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return _('Resource Usage')
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def url(self):
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return ''
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def _elapsed_ru(self, name):
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return (getattr(self._end_rusage, name)
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- getattr(self._start_rusage, name))
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def content(self):
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utime = 1000 * self._elapsed_ru('ru_utime')
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stime = 1000 * self._elapsed_ru('ru_stime')
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vcsw = self._elapsed_ru('ru_nvcsw')
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ivcsw = self._elapsed_ru('ru_nivcsw')
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# minflt = self._elapsed_ru('ru_minflt')
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# majflt = self._elapsed_ru('ru_majflt')
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# these are documented as not meaningful under Linux. If you're running BSD
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# feel free to enable them, and add any others that I hadn't gotten to before
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# I noticed that I was getting nothing but zeroes and that the docs agreed. :-(
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#
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# blkin = self._elapsed_ru('ru_inblock')
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# blkout = self._elapsed_ru('ru_oublock')
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# swap = self._elapsed_ru('ru_nswap')
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# rss = self._end_rusage.ru_maxrss
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# srss = self._end_rusage.ru_ixrss
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# urss = self._end_rusage.ru_idrss
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# usrss = self._end_rusage.ru_isrss
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# TODO l10n on values
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rows = (
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(_('User CPU time'), '%0.3f msec' % utime),
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(_('System CPU time'), '%0.3f msec' % stime),
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(_('Total CPU time'), '%0.3f msec' % (utime + stime)),
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(_('Elapsed time'), '%0.3f msec' % self.total_time),
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(_('Context switches'), '%d voluntary, %d involuntary' % (vcsw, ivcsw)),
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# ('Memory use', '%d max RSS, %d shared, %d unshared' % (rss, srss, urss + usrss)),
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# ('Page faults', '%d no i/o, %d requiring i/o' % (minflt, majflt)),
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# ('Disk operations', '%d in, %d out, %d swapout' % (blkin, blkout, swap)),
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)
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context = self.context.copy()
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context.update({
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'rows': rows,
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})
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return self.render('panels/timer.html', context)
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