#
# Mark Huang <mlhuang@cs.princeton.edu>
# Andy Bavier <acb@cs.princeton.edu>
+# Faiyaz Ahmed <faiyaza@cs.princeton.edu>
# Copyright (C) 2004-2006 The Trustees of Princeton University
#
-# $Id: bwmon.py,v 1.4 2006/06/02 04:00:00 mlhuang Exp $
+# $Id: bwmon.py,v 1.8 2006/07/10 20:22:12 faiyaza Exp $
#
import syslog
name - slice name
time - beginning of recording period in UNIX seconds
bytes - low bandwidth bytes transmitted at the beginning of the recording period
- exemptbytes - high bandwidth bytes transmitted at the beginning of the recording period
- avgrate - average low bandwidth rate to enforce over the recording period
- avgexemptrate - average high bandwidth rate to enforce over the recording period
+ exemptbytes - high bandwidth bytes transmitted at the beginning of the recording period (for I2 -F)
+ last_avgrate - last recorded avgrate from NM
+ last_maxrate - last recorded maxrate from NM
+ last_avgexemptrate - last recorded avgexemptrate from NM
+ last_maxexemptrate - last recorded maxexemptrate from NM
"""
def __init__(self, xid, name, maxrate, maxexemptrate, bytes, exemptbytes):
self.xid = xid
self.name = name
+ self.time = 0
+ self.exemptbytes = 0
+ self.last_maxrate = default_maxrate
+ self.last_avgrate = default_avgrate
+ self.last_avgexemptrate = default_avgexemptrate
+ self.last_maxexemptrate = default_maxexemptrate
self.reset(maxrate, maxexemptrate, bytes, exemptbytes)
def __repr__(self):
self.bytes = bytes
self.exemptbytes = exemptbytes
+ # If NM except"ns below, and new_max* doesn't get set, use last.
+ new_maxrate = self.last_maxrate
+ new_maxexemptrate = self.last_maxexemptrate
+
# Query Node Manager for max rate overrides
- (new_maxrate, new_maxexemptrate) = nm.query(self.name, [('nm_net_max_rate', -1), ('nm_net_max_exempt_rate', -1)])
- if new_maxrate == -1:
- new_maxrate = default_maxrate
- if new_maxexemptrate == -1:
- new_maxexemptrate = default_maxexemptrate
+ try:
+ vals = nm.query(self.name, [('nm_net_max_rate', self.last_maxrate),
+ ('nm_net_max_exempt_rate', self.last_maxexemptrate),
+ ('nm_net_avg_rate', self.last_avgrate),
+ ('nm_net_avg_exempt_rate', self.last_avgexemptrate)])
+ (new_maxrate, new_maxexemptrate,
+ self.last_avgrate, self.last_avgexemptrate) = vals
+ #If NM is alive, and there is a cap, update new
+ self.last_maxrate = new_maxrate
+ self.last_maxexemptrate = new_maxexemptrate
+
+ except Exception, err:
+ print "Warning: Exception received while querying NM:", err
if new_maxrate != maxrate or new_maxexemptrate != maxexemptrate:
print "%s reset to %s/%s" % \
it will get to send slightly more than the average daily byte
limit.
"""
+
+ # If NM except'ns below, and avg*rate doesn't get set, use last_*.
+ avgrate = self.last_avgrate
+ avgexemptrate = self.last_avgexemptrate
# Query Node Manager for max average rate overrides
- (self.avgrate, self.avgexemptrate) = nm.query(self.name, [('nm_net_avg_rate', -1), ('nm_net_avg_exempt_rate', -1)])
- if self.avgrate == -1:
- self.avgrate = default_avgrate
- if self.avgexemptrate == -1:
- self.avgexemptrate = default_avgexemptrate
-
- # Prepare message parameters from the template
+ try:
+ (avgrate, avgexemptrate) = nm.query(self.name,
+ [('nm_net_avg_rate', self.last_avgrate),
+ ('nm_net_avg_exempt_rate', self.last_avgexemptrate)])
+ #If NM is alive, and there is a cap, update new
+ self.last_avgexemptrate = avgexemptrate
+ self.last_avgrate = avgrate
+ except Exception, err:
+ print "Warning: Exception received while querying NM:", err
+
+ # Prepare message parameters from the template
message = ""
params = {'slice': self.name, 'hostname': socket.gethostname(),
'since': time.asctime(time.gmtime(self.time)) + " GMT",
'date': time.asctime(time.gmtime()) + " GMT",
'period': format_period(period)}
- bytelimit = self.avgrate * period / bits_per_byte
+ bytelimit = avgrate * period / bits_per_byte
if bytes >= (self.bytes + bytelimit) and \
- maxrate > self.avgrate:
- new_maxrate = self.avgrate
+ maxrate > avgrate:
+ new_maxrate = avgrate
else:
new_maxrate = maxrate
params['bytes'] = format_bytes(bytes - self.bytes)
params['maxrate'] = bwlimit.format_tc_rate(maxrate)
params['limit'] = format_bytes(bytelimit)
- params['avgrate'] = bwlimit.format_tc_rate(self.avgrate)
+ params['avgrate'] = bwlimit.format_tc_rate(avgrate)
if verbose:
print "%(slice)s %(class)s " \
- "%(bytes)s/%(limit)s (%(maxrate)s/%(avgrate)s)" % \
+ "%(bytes)s, %(limit)s (%(maxrate)s max/%(avgrate)s avg)" % \
params
# Cap low bandwidth burst rate
message += template % params
print "%(slice)s %(class)s capped at %(avgrate)s (%(bytes)s/%(limit)s)" % params
- exemptbytelimit = self.avgexemptrate * period / bits_per_byte
+ exemptbytelimit = avgexemptrate * period / bits_per_byte
if exemptbytes >= (self.exemptbytes + exemptbytelimit) and \
- maxexemptrate > self.avgexemptrate:
- new_maxexemptrate = self.avgexemptrate
+ maxexemptrate > avgexemptrate:
+ new_maxexemptrate = avgexemptrate
else:
new_maxexemptrate = maxexemptrate
params['bytes'] = format_bytes(exemptbytes - self.exemptbytes)
params['maxrate'] = bwlimit.format_tc_rate(maxexemptrate)
params['limit'] = format_bytes(exemptbytelimit)
- params['avgrate'] = bwlimit.format_tc_rate(self.avgexemptrate)
+ params['avgrate'] = bwlimit.format_tc_rate(avgexemptrate)
if verbose:
print "%(slice)s %(class)s " \
- "%(bytes)s/%(limit)s (%(maxrate)s/%(avgrate)s)" % \
+ "%(bytes)s, %(limit)s (%(maxrate)s max /%(avgrate)s avg)" % \
params
# Cap high bandwidth burst rate
(version, slices) = pickle.load(f)
f.close()
# Check version of data file
- if version != "$Id: bwmon.py,v 1.4 2006/06/02 04:00:00 mlhuang Exp $":
+ if version != "$Id: bwmon.py,v 1.8 2006/07/10 20:22:12 faiyaza Exp $":
print "Not using old version '%s' data file %s" % (version, datafile)
raise Exception
except Exception:
- version = "$Id: bwmon.py,v 1.4 2006/06/02 04:00:00 mlhuang Exp $"
+ version = "$Id: bwmon.py,v 1.8 2006/07/10 20:22:12 faiyaza Exp $"
slices = {}
# Get special slice IDs
root_xid = bwlimit.get_xid("root")
default_xid = bwlimit.get_xid("default")
- # Open connection to Node Manager
+ #Open connection to Node Manager
nm = NM()
live = []
if names and name not in names:
continue
+ #slices is populated from the pickle file
+ #xid is populated from bwlimit (read from /etc/passwd)
if slices.has_key(xid):
slice = slices[xid]
if time.time() >= (slice.time + period) or \
git://git.onelab.eu / mom.git / blobdiff