Latency of EMIR in Multi-Tier Deployment Shiraz Memon, Jülich Supercomputing Center EGI Technical Forum Prague, 20.09.2012

TIS Workshop, EMI TF 2012, Prague Outline Test Plan Network Deployment System Environment Latency Graphs 20/09/2012 TIS Workshop, EMI TF 2012, Prague

TIS Workshop, EMI TF 2012, Prague Test Plan Four EMIR nodes, connected to form a four tier hierarchy Synchronised from single NTP Server Three tests with number of Registrations: 1K, 10K, 100K 25 Concurrent Clients Propagate POST event onto the root node Goal Latency Measurement of propagation of individual records between tiers For every registration request -> Latency = Time of the Request Sent – Current Time 20/09/2012 TIS Workshop, EMI TF 2012, Prague

TIS Workshop, EMI TF 2012, Prague Network Deployment DSR emiregistry1.grid.niif.hu DSR vm-117.alamo.futuregrid.org DSR emiregistry2.grid.niif.hu DSR vm-116.alamo.futuregrid.org 25 Concurrent Clients 20/09/2012 TIS Workshop, EMI TF 2012, Prague

System Environment Details vm-116 and vm-117 on FutureGrid CentOS 5 2 GB RAM 8 GB HDD JVM Heap Size 1 GB EMIR v1.2.0, MongoDB emiregistry1 and emiregistry2 on Hungarian Cloud SL5.5 497 MB JVM Heap Size 256 MB 20/09/2012 TIS Workshop, EMI TF 2012, Prague

Latency of 1K Registrations 20/09/2012 TIS Workshop, EMI TF 2012, Prague

Latency of 10K Registrations 20/09/2012 TIS Workshop, EMI TF 2012, Prague

Latency of 100K Registrations 20/09/2012 TIS Workshop, EMI TF 2012, Prague

TIS Workshop, EMI TF 2012, Prague Questions? 20/09/2012 TIS Workshop, EMI TF 2012, Prague