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### Author: dag@wieers.com
class dstat_plugin(dstat):
"""
CPU frequency in percentage as reported by ACPI.
"""
def __init__(self):
self.name = 'frequency'
self.type = 'p'
self.width = 4
self.scale = 34
def check(self):
for cpu in glob.glob('/sys/devices/system/cpu/cpu[0-9]*'):
if not os.access(cpu+'/cpufreq/scaling_cur_freq', os.R_OK):
raise Exception('Cannot access acpi %s frequency information' % os.path.basename(cpu))
def vars(self):
ret = []
for name in glob.glob('/sys/devices/system/cpu/cpu[0-9]*'):
ret.append(os.path.basename(name))
ret.sort()
return ret
# return os.listdir('/sys/devices/system/cpu/')
def nick(self):
return [name.lower() for name in self.vars]
def extract(self):
for cpu in self.vars:
for line in dopen('/sys/devices/system/cpu/'+cpu+'/cpufreq/scaling_max_freq').readlines():
l = line.split()
max = int(l[0])
for line in dopen('/sys/devices/system/cpu/'+cpu+'/cpufreq/scaling_cur_freq').readlines():
l = line.split()
cur = int(l[0])
### Need to close because of bug in sysfs (?)
dclose('/sys/devices/system/cpu/'+cpu+'/cpufreq/scaling_cur_freq')
self.set1[cpu] = self.set1[cpu] + cur * 100.0 / max
if op.update:
self.val[cpu] = self.set1[cpu] / elapsed
else:
self.val[cpu] = self.set1[cpu]
if step == op.delay:
self.set1[cpu] = 0
# vim:ts=4:sw=4:et
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