### Authority: Dag Wieers class dstat_plugin(dstat): """ Most expensive CPU process. Displays the process that uses the CPU the most during the monitored interval. The value displayed is the percentage of CPU time for the total amount of CPU processing power. Based on per process CPU information. """ def __init__(self): self.name = 'most expensive' self.type = 's' self.width = 16 self.scale = 0 self.vars = ('cpu process',) self.pid = str(os.getpid()) self.pidset1 = {}; self.pidset2 = {} def extract(self): self.val['max'] = 0.0 self.val['cpu process'] = '' for pid in os.listdir('/proc/'): try: ### Is it a pid ? int(pid) ### Filter out dstat if pid == self.pid: continue ### Using dopen() will cause too many open files l = open('/proc/%s/stat' % pid).read().split() except ValueError: continue except IOError: continue if len(l) < 15: continue ### Reset previous value if it doesn't exist if not self.pidset1.has_key(pid): self.pidset1[pid] = 0 self.pidset2[pid] = int(l[13]) + int(l[14]) usage = (self.pidset2[pid] - self.pidset1[pid]) * 1.0 / elapsed / cpunr ### Is it a new topper ? if usage < self.val['max']: continue name = l[1][1:-1] self.val['max'] = usage self.val['pid'] = pid self.val['name'] = getnamebypid(pid, name) if self.val['max'] != 0.0: self.val['cpu process'] = '%-*s%s' % (self.width-3, self.val['name'][0:self.width-3], cprint(self.val['max'], 'f', 3, 34)) ### Debug (show PID) # self.val['cpu process'] = '%*s %-*s' % (5, self.val['pid'], self.width-6, self.val['name']) if step == op.delay: self.pidset1.update(self.pidset2) def showcsv(self): return '%s / %d%%' % (self.val['name'], self.val['max']) # vim:ts=4:sw=4:et