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### Author: Bert de Bruijn <bert+dstat$debruijn,be>
### VMware ESX kernel interrupt stats
### Displays kernel interrupt statistics on VMware ESX servers
# NOTE TO USERS: command-line plugin configuration is not yet possible, so I've
# "borrowed" the -I argument.
# EXAMPLES:
# # dstat --vmkint -I 0x46,0x5a
# You can even combine the Linux and VMkernel interrupt stats
# # dstat --vmkint -i -I 14,0x5a
# Look at /proc/vmware/interrupts to see which interrupt is linked to which function
class dstat_plugin(dstat):
def __init__(self):
self.name = 'vmkint'
self.type = 'd'
self.width = 4
self.scale = 1000
self.open('/proc/vmware/interrupts')
# self.intmap = self.intmap()
# def intmap(self):
# ret = {}
# for line in dopen('/proc/vmware/interrupts').readlines():
# l = line.split()
# if len(l) <= self.vmkcpunr: continue
# l1 = l[0].split(':')[0]
# l2 = ' '.join(l[vmkcpunr()+1:]).split(',')
# ret[l1] = l1
# for name in l2:
# ret[name.strip().lower()] = l1
# return ret
def vmkcpunr(self):
#the service console sees only one CPU, so cpunr == 1, only the vmkernel sees all CPUs
ret = []
# default cpu number is 2
ret = 2
for l in self.fd[0].splitlines():
if l[0] == 'Vector':
ret = int( int( l[-1] ) + 1 )
return ret
def discover(self):
#interrupt names are not decimal numbers, but rather hexadecimal numbers like 0x7e
ret = []
self.fd[0].seek(0)
for line in self.fd[0].readlines():
l = line.split()
if l[0] == 'Vector': continue
if len(l) < self.vmkcpunr()+1: continue
name = l[0].split(':')[0]
amount = 0
for i in l[1:1+self.vmkcpunr()]:
amount = amount + int(i)
if amount > 20: ret.append(str(name))
return ret
def vars(self):
ret = []
if op.intlist:
list = op.intlist
else:
list = self.discover
# len(list) > 5: list = list[-5:]
for name in list:
if name in self.discover:
ret.append(name)
# elif name.lower() in self.intmap:
# ret.append(self.intmap[name.lower()])
return ret
def check(self):
try:
os.listdir('/proc/vmware')
except:
raise Exception('Needs VMware ESX')
info(1, 'The vmkint module is an EXPERIMENTAL module.')
def extract(self):
self.fd[0].seek(0)
for line in self.fd[0].readlines():
l = line.split()
if len(l) < self.vmkcpunr()+1: continue
name = l[0].split(':')[0]
if name in self.vars:
self.set2[name] = 0
for i in l[1:1+self.vmkcpunr()]:
self.set2[name] = self.set2[name] + int(i)
for name in self.set2:
self.val[name] = (self.set2[name] - self.set1[name]) * 1.0 / elapsed
if step == op.delay:
self.set1.update(self.set2)
# vim:ts=4:sw=4
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