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### Dstat most expensive process plugin
### Displays the name of the most expensive process
###
### Authority: dag@wieers.com
global cpunr
class dstat_plugin(dstat):
def __init__(self):
self.name = 'most waiting for'
self.vars = ('child process',)
self.type = 's'
self.width = 16
self.scale = 0
def extract(self):
self.set2 = {}
self.val['max'] = 0.0
for pid in proc_pidlist():
try:
### Using dopen() will cause too many open files
l = proc_splitline('/proc/%s/stat' % pid)
except IOError:
continue
if len(l) < 15: continue
### Reset previous value if it doesn't exist
if not self.set1.has_key(pid):
self.set1[pid] = 0
self.set2[pid] = int(l[15]) + int(l[16])
usage = (self.set2[pid] - self.set1[pid]) * 1.0 / elapsed / cpunr
### Is it a new topper ?
if usage <= self.val['max']: continue
self.val['max'] = usage
self.val['name'] = getnamebypid(pid, l[1][1:-1])
self.val['pid'] = pid
### Debug (show PID)
# self.val['process'] = '%*s %-*s' % (5, self.val['pid'], self.width-6, self.val['name'])
if step == op.delay:
self.set1 = self.set2
def show(self):
if self.val['max'] == 0.0:
return '%-*s' % (self.width, '')
else:
return '%s%-*s%s' % (theme['default'], self.width-3, self.val['name'][0:self.width-3], cprint(self.val['max'], 'p', 3, 34))
def showcsv(self):
return '%s / %d%%' % (self.val['name'], self.val['max'])
# vim:ts=4:sw=4:et
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