# Faiyaz Ahmed <faiyaza@cs.princeton.edu>
# Copyright (C) 2004-2006 The Trustees of Princeton University
#
-# $Id: bwmon.py,v 1.7 2006/07/10 19:19:07 faiyaza Exp $
+# $Id: bwmon.py,v 1.5.2.2 2006/08/21 21:27:35 mlhuang Exp $
#
import syslog
datafile = "/var/lib/misc/bwmon.dat"
nm = None
+# Burst to line rate (or node cap). Set by NM.
default_maxrate = bwlimit.get_bwcap()
-
default_maxexemptrate = bwlimit.bwmax
+# What we cap to when slices break the rules.
# 500 Kbit or 5.4 GB per day
-default_avgrate = 500000
-
+#default_avgrate = 500000
# 1.5 Mbit or 16.4 GB per day
-default_avgexemptrate = 1500000
+#default_avgexemptrate = 1500000
+
+# 4 Gbyte per day. 4 * 1024K * 1024M * 1024G
+default_ByteThresh = 4294967296
+# 5.4 Gbyte per day max allowed transfered per recording period
+default_ByteMax = 5798205850
+# 14 Gbyte per day
+default_ExemptByteThresh = 15032385536
+# 16.4 Gbyte per day max allowed transfered per recording period to I2
+default_ExemptByteMax = 17609365914
+
# Average over 1 day
period = 1 * seconds_per_day
%(hostname)s to %(class)s destinations
since %(since)s.
-Its maximum %(class)s burst rate will be capped at %(avgrate)s
+Its maximum %(class)s burst rate will be capped at %(new_maxrate)s
until %(until)s.
Please reduce the average %(class)s transmission rate
-of the slice to %(avgrate)s, or %(limit)s per %(period)s.
+of the slice %(limit)s per %(period)s.
""".lstrip()
""".lstrip()
class Slice:
- """
- Stores the last recorded bandwidth parameters of a slice.
-
- xid - slice context/VServer ID
- 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 (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
+ """
+ Stores the last recorded bandwidth parameters of a slice.
+
+ xid - slice context/VServer ID
+ 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 (for I2 -F)
+ ByteMax - total volume of data allowed
+ ByteThresh - After thresh, cap node to (maxbyte - bytes)/(time left in period)
+ ExemptByteMax - Same as above, but for i2.
+ ExemptByteThresh - i2 ByteThresh
+ #last_maxexemptrate - last recorded maxexemptrate from NM. Slice attribute.
+ #last_maxrate - last recorded maxrate from NM. Slice attribute.
+ #last_ByteMax - Last recorded from NM. total volume of data allowed.
+ #last_ByteThresh - Last recorded from NM. After thresh, cap node to (maxbyte - bytes)/(period - t)
+ #last_ExemptByteMax - Last recorded from NM. Same as above, but for i2.
+ #last_ExemptByteThresh - Last recorded from NM. i2 ByteThresh
+
"""
- 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):
- return self.name
-
- def reset(self, maxrate, maxexemptrate, bytes, exemptbytes):
- """
- Begin a new recording period. Remove caps by restoring limits
- to their default values.
- """
-
- # Reset baseline time
- self.time = time.time()
-
- # Reset baseline byte coutns
- 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
- 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" % \
- (self.name,
- bwlimit.format_tc_rate(new_maxrate),
- bwlimit.format_tc_rate(new_maxexemptrate))
- bwlimit.set(xid = self.xid, maxrate = new_maxrate, maxexemptrate = new_maxexemptrate)
-
- def update(self, maxrate, maxexemptrate, bytes, exemptbytes):
- """
- Update byte counts and check if average rates have been
- exceeded. In the worst case (instantaneous usage of the entire
- average daily byte limit at the beginning of the recording
- period), the slice will be immediately capped and will get to
- send twice the average daily byte limit. In the common case,
- it will get to send slightly more than the average daily byte
- limit.
- """
+ def __init__(self, xid, name, maxrate, maxexemptrate, bytes, exemptbytes):
+ self.xid = xid
+ self.name = name
+ self.time = 0
+ self.bytes = 0
+ self.exemptbytes = 0
+ self.ByteMax = default_ByteMax
+ self.ByteThresh = default_ByteThresh
+ self.ExemptByteMax = default_ExemptByteMax
+ self.ExemptByteThresh = default_ExemptByteThresh
+ self.maxrate = default_maxrate
+ self.maxexemptrate = default_maxexemptrate
+ #self.last_maxrate = default_maxrate
+ #self.last_maxexemptrate = default_maxexemptrate
+ #self.last_ByteMax = default_ByteMax
+ #self.last_ByteThresh = default_ByteThresh
+ #self.last_ExemptByteMax = default_ExemptByteMax
+ #self.last_ExemptByteThresh = default_ExemptByteThresh
+
+ # Get real values where applicable
+ self.reset(maxrate, maxexemptrate, bytes, exemptbytes)
+
+ def __repr__(self):
+ return self.name
+
+ def updateSliceAttributes(self):
+ # Query Node Manager for max rate overrides
+ try:
+ vals = nm.query(self.name,
+ [('nm_net_max_rate', self.maxrate),
+ ('nm_net_max_exempt_rate', self.maxexemptrate)])
+ (self.maxrate, self.maxexemptrate) = vals
+
+ except Exception, err:
+ print "Warning: Exception received while querying NM:", err
+
+ def reset(self, maxrate, maxexemptrate, bytes, exemptbytes):
+ """
+ Begin a new recording period. Remove caps by restoring limits
+ to their default values.
+ """
+
+ # Query Node Manager for max rate overrides
+ self.updateSliceAttributes()
+
+ # Reset baseline time
+ self.time = time.time()
+
+ # Reset baseline byte coutns
+ self.bytes = bytes
+ self.exemptbytes = exemptbytes
+
+ if (self.maxrate != maxrate) or (self.maxexemptrate != maxexemptrate):
+ print "%s reset to %s/%s" % \
+ (self.name,
+ bwlimit.format_tc_rate(self.maxrate),
+ bwlimit.format_tc_rate(self.maxexemptrate))
+ bwlimit.set(xid = self.xid, maxrate = self.maxrate, maxexemptrate = self.maxexemptrate)
+
+ def update(self, maxrate, maxexemptrate, bytes, exemptbytes):
+ """
+ Update byte counts and check if average rates have been
+ exceeded. In the worst case (instantaneous usage of the entire
+ average daily byte limit at the beginning of the recording
+ period), the slice will be immediately capped and will get to
+ send twice the average daily byte limit. In the common case,
+ 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
- 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
+ # Query Node Manager for max rate overrides
+ self.updateSliceAttributes()
- # Prepare message parameters from the template
- message = ""
- params = {'slice': self.name, 'hostname': socket.gethostname(),
- 'since': time.asctime(time.gmtime(self.time)) + " GMT",
- 'until': time.asctime(time.gmtime(self.time + period)) + " GMT",
- 'date': time.asctime(time.gmtime()) + " GMT",
- 'period': format_period(period)}
-
- bytelimit = avgrate * period / bits_per_byte
- if bytes >= (self.bytes + bytelimit) and \
- maxrate > avgrate:
- new_maxrate = avgrate
- else:
- new_maxrate = maxrate
-
- # Format template parameters for low bandwidth message
- params['class'] = "low bandwidth"
- 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(avgrate)
-
- if verbose:
- print "%(slice)s %(class)s " \
- "%(bytes)s, %(limit)s (%(maxrate)s max/%(avgrate)s avg)" % \
- params
-
- # Cap low bandwidth burst rate
- if new_maxrate != maxrate:
- message += template % params
- print "%(slice)s %(class)s capped at %(avgrate)s (%(bytes)s/%(limit)s)" % params
-
- exemptbytelimit = avgexemptrate * period / bits_per_byte
- if exemptbytes >= (self.exemptbytes + exemptbytelimit) and \
- maxexemptrate > avgexemptrate:
- new_maxexemptrate = avgexemptrate
- else:
- new_maxexemptrate = maxexemptrate
-
- # Format template parameters for high bandwidth message
- params['class'] = "high bandwidth"
- 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(avgexemptrate)
-
- if verbose:
- print "%(slice)s %(class)s " \
- "%(bytes)s, %(limit)s (%(maxrate)s max /%(avgrate)s avg)" % \
- params
-
- # Cap high bandwidth burst rate
- if new_maxexemptrate != maxexemptrate:
- message += template % params
- print "%(slice)s %(class)s capped at %(avgrate)s (%(bytes)s/%(limit)s)" % params
-
- # Apply parameters
- if new_maxrate != maxrate or new_maxexemptrate != maxexemptrate:
- bwlimit.set(xid = self.xid, maxrate = new_maxrate, maxexemptrate = new_maxexemptrate)
-
- # Notify slice
- if message:
- subject = "pl_mom capped bandwidth of slice %(slice)s on %(hostname)s" % params
- if debug:
- print subject
- print message + (footer % params)
- else:
- slicemail(self.name, subject, message + (footer % params))
+ # Prepare message parameters from the template
+ message = ""
+ params = {'slice': self.name, 'hostname': socket.gethostname(),
+ 'since': time.asctime(time.gmtime(self.time)) + " GMT",
+ 'until': time.asctime(time.gmtime(self.time + period)) + " GMT",
+ 'date': time.asctime(time.gmtime()) + " GMT",
+ 'period': format_period(period)}
+
+ if bytes >= (self.bytes + self.ByteThresh):
+ new_maxrate = (self.ByteMax - self.ByteThresh)/(period - (time.time() - self.time))
+ else:
+ new_maxrate = maxrate
+
+ # Format template parameters for low bandwidth message
+ params['class'] = "low bandwidth"
+ params['bytes'] = format_bytes(bytes - self.bytes)
+ params['maxrate'] = bwlimit.format_tc_rate(maxrate)
+ params['limit'] = format_bytes(self.ByteMax)
+ params['new_maxrate'] = bwlimit.format_tc_rate(new_maxrate)
+
+ if verbose:
+ print "%(slice)s %(class)s " \
+ "%(bytes)s, %(limit)s (%(new_maxrate)s avg)" % \
+ params
+
+ # Cap low bandwidth burst rate
+ if new_maxrate != maxrate:
+ message += template % params
+ print "%(slice)s %(class)s capped at %(new_maxrate)s " % params
+
+ if exemptbytes >= (self.exemptbytes + self.ExemptByteThresh):
+ new_maxexemptrate = \
+ (self.ExemptByteMax - self.ExemptByteThresh)/(period - (time.time() - self.time))
+ else:
+ new_maxexemptrate = maxexemptrate
+
+ # Format template parameters for high bandwidth message
+ params['class'] = "high bandwidth"
+ params['bytes'] = format_bytes(exemptbytes - self.exemptbytes)
+ params['maxrate'] = bwlimit.format_tc_rate(maxexemptrate)
+ params['limit'] = format_bytes(self.ExemptByteMax)
+ params['new_maxrate'] = bwlimit.format_tc_rate(new_maxexemptrate)
+
+ if verbose:
+ print "%(slice)s %(class)s " \
+ "%(bytes)s, %(limit)s (%(new_maxrate)s avg)" % params
+
+ # Cap high bandwidth burst rate
+ if new_maxexemptrate != maxexemptrate:
+ message += template % params
+ print "%(slice)s %(class)s capped at %(new_maxexemptrate)s" % params
+
+ # Apply parameters
+ if new_maxrate != maxrate or new_maxexemptrate != maxexemptrate:
+ bwlimit.set(xid = self.xid, maxrate = new_maxrate, maxexemptrate = new_maxexemptrate)
+
+ # Notify slice
+ if message:
+ subject = "pl_mom capped bandwidth of slice %(slice)s on %(hostname)s" % params
+ if debug:
+ print subject
+ print message + (footer % params)
+ else:
+ slicemail(self.name, subject, message + (footer % params))
def usage():
- print """
+ print """
Usage: %s [OPTIONS]...
Options:
- -d, --debug Enable debugging (default: %s)
- -v, --verbose Increase verbosity level (default: %d)
- -f, --file=FILE Data file (default: %s)
- -s, --slice=SLICE Constrain monitoring to these slices (default: all)
- -p, --period=SECONDS Interval in seconds over which to enforce average byte limits (default: %s)
- -h, --help This message
+ -d, --debug Enable debugging (default: %s)
+ -v, --verbose Increase verbosity level (default: %d)
+ -f, --file=FILE Data file (default: %s)
+ -s, --slice=SLICE Constrain monitoring to these slices (default: all)
+ -p, --period=SECONDS Interval in seconds over which to enforce average byte limits (default: %s)
+ -h, --help This message
""".lstrip() % (sys.argv[0], debug, verbose, datafile, format_period(period))
def main():
- # Defaults
- global debug, verbose, datafile, period, nm
- # All slices
- names = []
-
- try:
- longopts = ["debug", "verbose", "file=", "slice=", "period=", "help"]
- (opts, argv) = getopt.getopt(sys.argv[1:], "dvf:s:p:h", longopts)
- except getopt.GetoptError, err:
- print "Error: " + err.msg
- usage()
- sys.exit(1)
-
- for (opt, optval) in opts:
- if opt == "-d" or opt == "--debug":
- debug = True
- elif opt == "-v" or opt == "--verbose":
- verbose += 1
- bwlimit.verbose = verbose - 1
- elif opt == "-f" or opt == "--file":
- datafile = optval
- elif opt == "-s" or opt == "--slice":
- names.append(optval)
- elif opt == "-p" or opt == "--period":
- period = int(optval)
- else:
- usage()
- sys.exit(0)
-
- # Check if we are already running
- writepid("bwmon")
-
- if not debug:
- # Redirect stdout and stderr to syslog
- syslog.openlog("bwmon")
- sys.stdout = sys.stderr = Logger()
-
- try:
- f = open(datafile, "r+")
- if verbose:
- print "Loading %s" % datafile
- (version, slices) = pickle.load(f)
- f.close()
- # Check version of data file
- if version != "$Id: bwmon.py,v 1.7 2006/07/10 19:19:07 faiyaza Exp $":
- print "Not using old version '%s' data file %s" % (version, datafile)
- raise Exception
- except Exception:
- version = "$Id: bwmon.py,v 1.7 2006/07/10 19:19:07 faiyaza Exp $"
- slices = {}
-
- # Get special slice IDs
- root_xid = bwlimit.get_xid("root")
- default_xid = bwlimit.get_xid("default")
-
- #Open connection to Node Manager
- nm = NM()
-
- live = []
- for params in bwlimit.get():
- (xid, share,
- minrate, maxrate,
- minexemptrate, maxexemptrate,
- bytes, exemptbytes) = params
- live.append(xid)
-
- # Ignore root and default buckets
- if xid == root_xid or xid == default_xid:
- continue
-
- name = bwlimit.get_slice(xid)
- if name is None:
- # Orphaned (not associated with a slice) class
- name = "%d?" % xid
-
- # Monitor only the specified slices
- 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 \
- bytes < slice.bytes or exemptbytes < slice.exemptbytes:
- # Reset to defaults every 24 hours or if it appears
- # that the byte counters have overflowed (or, more
- # likely, the node was restarted or the HTB buckets
- # were re-initialized).
- slice.reset(maxrate, maxexemptrate, bytes, exemptbytes)
- else:
- # Update byte counts
- slice.update(maxrate, maxexemptrate, bytes, exemptbytes)
- else:
- # New slice, initialize state
- slice = slices[xid] = Slice(xid, name, maxrate, maxexemptrate, bytes, exemptbytes)
-
- # Delete dead slices
- dead = Set(slices.keys()) - Set(live)
- for xid in dead:
- del slices[xid]
-
- if verbose:
- print "Saving %s" % datafile
- f = open(datafile, "w")
- pickle.dump((version, slices), f)
- f.close()
-
- removepid("bwmon")
+ # Defaults
+ global debug, verbose, datafile, period, nm
+ # All slices
+ names = []
+
+ try:
+ longopts = ["debug", "verbose", "file=", "slice=", "period=", "help"]
+ (opts, argv) = getopt.getopt(sys.argv[1:], "dvf:s:p:h", longopts)
+ except getopt.GetoptError, err:
+ print "Error: " + err.msg
+ usage()
+ sys.exit(1)
+
+ for (opt, optval) in opts:
+ if opt == "-d" or opt == "--debug":
+ debug = True
+ elif opt == "-v" or opt == "--verbose":
+ verbose += 1
+ bwlimit.verbose = verbose - 1
+ elif opt == "-f" or opt == "--file":
+ datafile = optval
+ elif opt == "-s" or opt == "--slice":
+ names.append(optval)
+ elif opt == "-p" or opt == "--period":
+ period = int(optval)
+ else:
+ usage()
+ sys.exit(0)
+
+ # Check if we are already running
+ writepid("bwmon")
+
+ if not debug:
+ # Redirect stdout and stderr to syslog
+ syslog.openlog("bwmon")
+ sys.stdout = sys.stderr = Logger()
+
+ try:
+ f = open(datafile, "r+")
+ if verbose:
+ print "Loading %s" % datafile
+ (version, slices) = pickle.load(f)
+ f.close()
+ # Check version of data file
+ if version != "$Id: bwmon.py,v 1.5.2.2 2006/08/21 21:27:35 mlhuang Exp $":
+ print "Not using old version '%s' data file %s" % (version, datafile)
+ raise Exception
+ except Exception:
+ version = "$Id: bwmon.py,v 1.5.2.2 2006/08/21 21:27:35 mlhuang Exp $"
+ slices = {}
+
+ # Get special slice IDs
+ root_xid = bwlimit.get_xid("root")
+ default_xid = bwlimit.get_xid("default")
+
+ #Open connection to Node Manager. Global.
+ nm = NM()
+
+ live = []
+ # Get actuall running values from tc.
+ for params in bwlimit.get():
+ (xid, share,
+ minrate, maxrate,
+ minexemptrate, maxexemptrate,
+ bytes, exemptbytes) = params
+ live.append(xid)
+
+ # Delete Me
+ print("name %s , minrate %s, maxrate %s, minexemptrate %s, maxexemptrate %s, bytes %s, exemptbytes %s" % (bwlimit.get_slice(xid), minrate, maxrate, minexemptrate, maxexemptrate, bytes, exemptbytes))
+
+ # Ignore root and default buckets
+ if xid == root_xid or xid == default_xid:
+ continue
+
+ name = bwlimit.get_slice(xid)
+ if name is None:
+ # Orphaned (not associated with a slice) class
+ name = "%d?" % xid
+
+ # Monitor only the specified slices
+ 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 \
+ bytes < slice.bytes or exemptbytes < slice.exemptbytes:
+ # Reset to defaults every 24 hours or if it appears
+ # that the byte counters have overflowed (or, more
+ # likely, the node was restarted or the HTB buckets
+ # were re-initialized).
+ slice.reset(maxrate, maxexemptrate, bytes, exemptbytes)
+ else:
+ # Update byte counts
+ slice.update(maxrate, maxexemptrate, bytes, exemptbytes)
+ else:
+ # New slice, initialize state
+ slice = slices[xid] = Slice(xid, name, maxrate, maxexemptrate, bytes, exemptbytes)
+
+ # Delete dead slices
+ dead = Set(slices.keys()) - Set(live)
+ for xid in dead:
+ del slices[xid]
+
+ if verbose:
+ print "Saving %s" % datafile
+ f = open(datafile, "w")
+ pickle.dump((version, slices), f)
+ f.close()
+
+ removepid("bwmon")
if __name__ == '__main__':
- main()
+ main()
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