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WWW.KISTI.RE.KRWWW.KISTI.RE.KR WWW.KREONET.RE.KRWWW.KREONET.RE.KR
SUPERCOMPUTING CENTERSUPERCOMPUTING CENTERKISTIKISTIMIN KI NOHMIN KI NOH
E2E performance measurementIn KREONET
2005.1.27
CONTENTSCONTENTS
1.1. KREONET INTRODUCTIONKREONET INTRODUCTION
2. E2E N/W PERFORMANCE MEASUREMET2. E2E N/W PERFORMANCE MEASUREMET - AMP( Active Measurement Program)- AMP( Active Measurement Program) - NDT - NDT - FlowScan- FlowScan - Network Performance Tester- Network Performance Tester
KREONET NETWORK BACKBONEKREONET NETWORK BACKBONE
- KREONET (Korea Research Environment Open Network) is a R&D network of Korea supported by Korean government.
- KREONET member are Currently over 200 organizations (research institutes, universities, industrial, research laboratories)
- KREONET has 12 regional network centers & NOC in Daejeon, KISTI
- Major Network Services are IPv4/IPv6 Unicast Routing, Multicast routing, Lambda networking, QoS Service, TE..
- Major S&T resource service with KREONET are National Supercomputing Center TeraCluster(512CPU) S&T DB Service Advanced Experimental Facilities
INTERNATINAL LINKSINTERNATINAL LINKS
: USA NetworkPeering Point : ITRC : Circuit Matching/Landing Point
Seoul(Dacom ITMC)
Daejeon
Chicago
Seattle
Bandon
Morro Bay
Sacramento(MCI ITMC)
1.2Gbps
155KMbps
622Mbps
1.2Gbps
155Mbps
155MbpsBEIJING
CSTNetStarLight
155Mbps
: China NetworkPeering Point
- First Peer to North America connect with STAR TAP , 45Mbps - STAR TAP peer change to StarLight & upgrade to Optical network (1.2Gbps) - Interconnect to APAN pass through KOREN 1Gbps - New Peer KREONET(Korea)/CSTNet(China) -> 310Mbps
KREONET/STARLIGHT (2004) KREONET/STARTAP(2003) KREONET/CHINA(2004)
AMPAMP
AMP data after KREONET Backbone upgrade
Before After
• Since 2001, AMP Server has operate and service for measuring backbone network performance.
• Major AMP service is for monitoring backbone network performance among domestic regional centers (AMP give us Full mash performance data is so useful for NOC!)
• Currently 11 of AMP Client has Operate and service.
(AMP server located in NOC) • URL: http://amp.kreonet2.net• We usefully used AMP data when
had finished KREONET backbone upgrade work (It show us How improve Network performance after change to optical network)
Regional Center
Regional Center
Regional Center
Regional Center
NDTNDT
• 11 org. provide with Computational resource for big calculation on Grid environment.
• NDT is service for GRID researchers (e2e network performance is so importa
nt for grid & need system interface tuning)
• NDT Server implemented in Grid Cluster & Supercomputer Domain in KISTI
(Service useful information to other cluster & supercomputer domain)
• It useful when we have test 13 of application Performance on Grid environment.
(KISTI- Kunkook University)• URL: http://noc.grid-kr.org
KISTI
SCU
JBU
PNU
MJU
KumHo
SNU
POSTECH
POSTECH
IBM p630
SGI Origin
16 nodes cluster
IBM SP2 16 nodes cluster
HP v2500
SGI Origin
16 nodes cluster
16 nodes clusterTMUIBM SP2
KISTI16 nodes cluster
NDT ServerIn KISTI Cluster Domain
Performance measure to NDT server
Performance measure to NDT server
Performance measure to NDT server
Network Performance TesterNetwork Performance Tester
AGENT1
AGENT2
SLA SERVER
http://sla.kreonet2.net
netloger
netloger
monitor
monitor
IPv6,IPv4TCP/UDP
IPv6,IPv4TCP/UDP
• TCP Performance Measure-Measure bandwidth (Max. throughput) -Report MSS/MTU size and observed read sizes. -TCP window size control for performance tuning
UDP Performance Measure-send/receive UDP streams-packet loss/delay/jitter
• Based on Iperf 1.64 • easy measure with only Agent install & Web UI• Sender will be Client receiver will be Server• OS : Linux Debian Package & Perl 5.61 above • System : Pentium 550Mhz, 128Mb RAM)• Service URL : http://sla.kreonet2.net
STEP 1. Configure STEP2. Realtime Monitor
STEP3. Test Result
Network Performance Tester (Cont.)Network Performance Tester (Cont.)
FlowScan+FlowScan+
• We need information about what flow our network.
• FlowScan is a passive measurement tool drawing traffic graphs by analyzing network flows exported by routers and switches– NetFlow is exported CISCO rou
ters and switches
• FlowScan+ is improved by adding MySQL, and have a function query interface to get flow information analyzing flow data (IP, top user, flow type)
• http://Flowscan.kreonet2.net
Thank you!
mknoh@kisti.re.krhttp://noc.kreonet2.net