### Author: Dag Wieers <dag@wieers.com> ### Dstat most expensive process plugin ### Displays the name of the most expensive process ### More information: ### http://lwn.net/Articles/317814/ class dstat_plugin(dstat): def __init__(self): self.name = 'out of memory' self.vars = ('kill score',) self.type = 's' self.width = 18 self.scale = 0 def check(self): if not os.access('/proc/self/oom_score', os.R_OK): raise Exception, 'Kernel does not support /proc/pid/oom_score, use at least 2.6.11.' def extract(self): self.output = '' self.val['max'] = 0.0 for pid in proc_pidlist(): try: ### Extract name name = proc_splitline('/proc/%s/stat' % pid)[1][1:-1] ### Using dopen() will cause too many open files l = proc_splitline('/proc/%s/oom_score' % pid) except IOError: continue except IndexError: continue if len(l) < 1: continue oom_score = int(l[0]) ### Is it a new topper ? if oom_score <= self.val['max']: continue self.val['max'] = oom_score self.val['name'] = getnamebypid(pid, name) self.val['pid'] = pid if self.val['max'] != 0.0: self.output = '%-*s%s' % (self.width-4, self.val['name'][0:self.width-4], cprint(self.val['max'], 'f', 4, 1000)) ### Debug (show PID) # self.output = '%*s %-*s' % (5, self.val['pid'], self.width-6, self.val['name']) def showcsv(self): return '%s / %d%%' % (self.val['name'], self.val['max']) # vim:ts=4:sw=4:et

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