Transcript Impact of undesirable HTTP traffic on electrical power consumption

Impact of undesirable HTTP traffic on
electrical power consumption in the ICT
rooms
Ivan Ivanovic - BUCC/AMRES
EUNIS 2012
Vila Real
June 22, 2012
connect • communicate • collaborate
Power consumption monitoring
Under the influence of Green Technology gathering information
about ICT rooms power consumption is becoming popular topic.
Monitoring of power consumption is often disregarded?!
Popular monitoring applications are adapted for monitoring of
commonly used variables (traffic utilization, port status, services
state, …) but not power consumption.
Most datacenters are often designed with good electric network
power backup (power reserve, UPS, fuel generator).
Manufacturers of power supply devices are offering their own
software for monitoring.
Why can’t we integrate it with custom NMS software we already
have?!
Control power consumption and reduce it.
Can we have information about power consumption of specific
service?!
connect • communicate • collaborate
1/10
AMRES topology
connect • communicate • collaborate
Testing environment
AMRES policy for web traffic  IronPorts
Devices
Six Ironport Web security appliance (S670)
Ironport Management appliance (M160)
Cisco Catalyst 2960 & ASR1002
Fujitsu-Siemens servers
(4 x RX200S5 & 1 x RX300S5)
2 x APC Smart 5000
2 x APC Metered PDU AP7852
UPS and PDU support SNMP
Almost all devices have dual supplies
connect • communicate • collaborate
2/10
System monitoring
SNMP protocol
NetFlow protocol
Ironport Log files
connect • communicate • collaborate
SNMP variables
APC SNMP variables
APC UPS 5000VA SNMP variables:
– .1.3.6.1.4.1.318.1.1.1.4.2.3 - The current UPS load
expressed in percent of rated capacity.
– .1.3.6.1.4.1.318.1.1.1.4.2.4 - The current in amperes drawn
by the load on the UPS.
APC PDU SNMP variables:
– .1.3.6.1.4.1.318.1.1.12.2.3.1.1.2 - Getting this OID will return
the phase/bank load measured in tenths of Amps.
– .1.3.6.1.4.1.318.1.1.12.1.16 - Getting this OID will return the
Power in Watts.
connect • communicate • collaborate
3/10
SNMP variables and accuracy
Basic “mrtg-rrd” approach (90 sec sampling)
Flat graphs (constant values)
Not enough information
connect • communicate • collaborate
4/10
SNMP variables and accuracy
Linux script - 5 second sampling – Output current
∆Iups=1A, ∆Ipdu=100mA
connect • communicate • collaborate
5/10
SNMP variables and accuracy
Linux script - 5 second sampling – Output load
∆Wups=40W, ∆ Wpdu=23W
connect • communicate • collaborate
6/10
Network Traffic and power
consumption relation
connect • communicate • collaborate
Network Traffic and power
consumption relation
Linux script
#!/bin/bash
while true;
do
c=(`snmpget -v 2c -c community 147.91.7.1 .1.3.6.1.2.1.31.1.1.1.6.23 .1.3.6.1.2.1.31.1.1.1.10.23 -OvQ`);
sleep 10
d=(`snmpget -v 2c -c community 147.91.7.1 .1.3.6.1.2.1.31.1.1.1.6.23 .1.3.6.1.2.1.31.1.1.1.10.23 -OvQ`);
a=`snmpget -v 2c -c community 192.168.99.16 .1.3.6.1.4.1.318.1.1.12.1.16.0 -OvQ`;
b=`snmpget -v 2c -c community 192.168.99.17 .1.3.6.1.4.1.318.1.1.12.1.16.0 -OvQ`;
in=`expr ${d[0]} - ${c[0]}`
out=`expr ${d[1]} - ${c[1]}`
echo `date +"%m-%d-%y/%T"` $a $b $in $out
connect • communicate • collaborate
Network Traffic and power
consumption relation
High correlation (r~0.8)
Linear relation
Power consumption function
y=0.2407∙x [W/Mbps]+ 2884.7[W]
connect • communicate • collaborate
Network Traffic and power
consumption relation
Linear relation
y=0.2407∙x + 2884.7
Initial power consumption W0=2884.7W (y-intercept)
Traffic dependency K=0.2047[W/Mbps] (slope)
Network traffic consume about ~11% of total power consumption
connect • communicate • collaborate
Prediction of power consumption
Error for predicted power consumption expressed in KWh is ~ 0.47%
connect • communicate • collaborate
Prediction of power consumption
connect • communicate • collaborate
Impact of undesirable traffic on
electrical power consumption
NetwFlow information
Separate traffic by services, src&dst AS, src&dst IP…..
connect • communicate • collaborate
Impact of undesirable traffic on
electrical power consumption
uTorrent plugin (propagation of 127.0.0.1 requests through
the network)
Source - Ironport proxy (squid) logs
connect • communicate • collaborate
SNMP queries time interval
How to choose sampling period (KWh calculation)?
Increase time between SNMP queries
Reduce load on NMS system
connect • communicate • collaborate
7/10
Monitor and reduce power
consumption!
Can we use traffic results in order to calculate our electric bills?
It is easier to collect information about traffic!
Reduce the sampling frequency in order to lower the burden on
your NMS system.
Manufacturers should agree on universal MIB database.
(.1.3.6.1.2.1.XY) ($)
Implementation of SNMP variable that has “memory capability” –
SNMP Counters. ($)
Implementation of good security is necessary
Stop the undesirable traffic at the source ($)
By new equipment ($ )
Be smart, be green!
connect • communicate • collaborate
10/10
Campus Best Practices (NA3/T4)
Addresses key challenges for European
campus networks
Participating NRENs organise working
groups within their country
Working groups discuss and agree on
common campus best-practices
Best practice documents are translated
to English and published
Results are presented at conferences
European level workshops on areas of
focus are organised
Download ~44 documents from
Areas of focus
Physical
Infrastructure
Campus
Networking
Real-time
communications
Network
Monitoring
Wireless
Security
www.geant.net/About_GEANT/Campus_Best_Practice/
Participating NRENs
20
connect • communicate • collaborate
Q&A
Thank you!
[email protected]
connect • communicate • collaborate