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Experimental 'moving average' over 5 recent CPU samples to smooth out graphs

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berrange@roquette.boston.redhat.com 2006-04-03 13:18:58 -04:00
parent 85e2bb9b0d
commit b38d372b8e
1 changed files with 32 additions and 3 deletions
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35
src/gnome-virt-manager.py.in
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@ -231,6 +231,7 @@ class vmmDetails:
self.cpu_usage_graph = self.cpu_usage_figure.add_subplot(111)
self.cpu_usage_graph.set_autoscale_on(False)
self.cpu_usage_line = None
self.cpu_usage_line_avg = None
self.cpu_usage_canvas = FigureCanvasGTK(self.cpu_usage_figure)
self.cpu_usage_canvas.show()
self.window.get_widget("graph-table").attach(self.cpu_usage_canvas, 1, 2, 0, 1)
@ -382,12 +383,16 @@ class vmmDetails:
history_len = self.engine.get_config().get_stats_history_length()
cpu_vector = self.engine.get_stats().cpu_time_vector(vmname)
cpu_vector.reverse()
cpu_vector_avg = self.engine.get_stats().cpu_time_moving_avg_vector(vmname)
cpu_vector_avg.reverse()
if self.cpu_usage_line == None:
self.cpu_usage_line = self.cpu_usage_graph.plot(cpu_vector)
self.cpu_usage_line_avg = self.cpu_usage_graph.plot(cpu_vector_avg)
self.cpu_usage_graph.set_xlim(0, history_len)
self.cpu_usage_graph.set_ylim(0, 100)
else:
self.cpu_usage_line[0].set_ydata(cpu_vector)
self.cpu_usage_line_avg[0].set_ydata(cpu_vector_avg)
self.cpu_usage_graph.set_xlim(0, history_len)
self.cpu_usage_graph.set_ylim(0, 100)
self.cpu_usage_graph.set_yticklabels(["0","","","","","100"])
@ -960,8 +965,7 @@ class vmmStats:
prevTimestamp = self.record[vmname][0]["timestamp"]
prevCpuTime = self.record[vmname][0]["cpuTimeAbs"]
pcentCpuTime = (info[4]-prevCpuTime) * 100 / ((now - prevTimestamp)*1000*1000*1000)
pcentCpuTime = pcentCpuTime / self.host_active_processor_count()
pcentCpuTime = (info[4]-prevCpuTime) * 100 / ((now - prevTimestamp)*1000*1000*1000*self.host_active_processor_count())
pcentCurrMem = info[2] * 100 / self.host_memory_size()
pcentMaxMem = info[1] * 100 / self.host_memory_size()
@ -978,7 +982,22 @@ class vmmStats:
}
self.record[vmname].insert(0, newStats)
nSamples = 5
#nSamples = len(self.record[vmname])
if nSamples > len(self.record[vmname]):
nSamples = len(self.record[vmname])
startCpuTime = self.record[vmname][nSamples-1]["cpuTimeAbs"]
startTimestamp = self.record[vmname][nSamples-1]["timestamp"]
if startTimestamp == now:
self.record[vmname][0]["cpuTimeMovingAvg"] = self.record[vmname][0]["cpuTimeAbs"]
self.record[vmname][0]["cpuTimeMovingAvgPercent"] = 0
else:
self.record[vmname][0]["cpuTimeMovingAvg"] = (self.record[vmname][0]["cpuTimeAbs"]-startCpuTime) / nSamples
self.record[vmname][0]["cpuTimeMovingAvgPercent"] = (self.record[vmname][0]["cpuTimeAbs"]-startCpuTime) * 100 / ((now-startTimestamp)*1000*1000*1000 * self.host_active_processor_count())
def host_memory_size(self):
return self.hostinfo[1]*1024
@ -1041,6 +1060,16 @@ class vmmStats:
vector.append(0)
return vector
def cpu_time_moving_avg_vector(self, vmname):
vector = []
stats = self.record[vmname]
for i in range(self.engine.get_config().get_stats_history_length()+1):
if i < len(stats):
vector.append(stats[i]["cpuTimeMovingAvgPercent"])
else:
vector.append(0)
return vector
def current_memory_vector(self, vmname):
vector = []
stats = self.record[vmname]