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Member "dstat-0.7.4/plugins/dstat_top_cputime.py" (17 Jan 2019, 2353 Bytes) of package /linux/privat/dstat-0.7.4.tar.gz:

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    1 ### Authority: dag@wieers.com
    2 
    3 ### For more information, see:
    4 ###     http://eaglet.rain.com/rick/linux/schedstat/
    5 
    6 class dstat_plugin(dstat):
    7     """
    8     Name and total amount of CPU time consumed in milliseconds of the process
    9     that has the highest total amount of cputime for the measured timeframe.
   10 
   11     On a system with one CPU and one core, the total cputime is 1000ms. On a
   12     system with two cores the total cputime is 2000ms.
   13     """
   14 
   15     def __init__(self):
   16         self.name = 'highest total'
   17         self.vars = ('cputime process',)
   18         self.type = 's'
   19         self.width = 17
   20         self.scale = 0
   21         self.pidset1 = {}
   22 
   23     def check(self):
   24         if not os.access('/proc/self/schedstat', os.R_OK):
   25             raise Exception('Kernel has no scheduler statistics [CONFIG_SCHEDSTATS], use at least 2.6.12')
   26 
   27     def extract(self):
   28         self.output = ''
   29         self.pidset2 = {}
   30         self.val['result'] = 0
   31         for pid in proc_pidlist():
   32             try:
   33                 ### Reset values
   34                 if pid not in self.pidset1:
   35                     self.pidset1[pid] = {'run_ticks': 0}
   36 
   37                 ### Extract name
   38                 name = proc_splitline('/proc/%s/stat' % pid)[1][1:-1]
   39 
   40                 ### Extract counters
   41                 l = proc_splitline('/proc/%s/schedstat' % pid)
   42             except IOError:
   43                 continue
   44             except IndexError:
   45                 continue
   46 
   47             if len(l) != 3: continue
   48 
   49             self.pidset2[pid] = {'run_ticks': int(l[0])}
   50 
   51             totrun = (self.pidset2[pid]['run_ticks'] - self.pidset1[pid]['run_ticks']) * 1.0 / elapsed
   52 
   53             ### Get the process that spends the most jiffies
   54             if totrun > self.val['result']:
   55                 self.val['result'] = totrun
   56                 self.val['pid'] = pid
   57                 self.val['name'] = getnamebypid(pid, name)
   58 
   59         if step == op.delay:
   60             self.pidset1 = self.pidset2
   61 
   62         if self.val['result'] != 0.0:
   63             self.output = '%-*s%s' % (self.width-4, self.val['name'][0:self.width-4], cprint(self.val['result'], 'd', 4, 100))
   64 
   65         ### Debug (show PID)
   66 #       self.output = '%*s %-*s' % (5, self.val['pid'], self.width-6, self.val['name'])
   67 
   68     def showcsv(self):
   69         return '%s / %.4f' % (self.val['name'], self.val['result'])
   70 
   71 # vim:ts=4:sw=4:et