1. Plan for Measurements Monarc General Meeting 26 July 1999 A. Brunengo - INFN Genova P. Capiluppi - INFN Bologna A. Ghiselli - INFN Cnaf L. Perini - INFN Milano S. Resconi - INFN Milano M. Sgaravatto - INFN Padova C. Vistoli - INFN Cnaf 26 July 1999 Massimo Sgaravatto - INFN Padova

2. 26 July 1999Massimo Sgaravatto - INFN Padova Preliminary tests on network zStress tests: analysis jobs with read/write access to the Data Base and performance measure zObjectives: xTests about Objectivity performance and behavior xLocate the system bottleneck xCollect measures to give correct input to simulation activities xValidation of the simulation tool

3. 26 July 1999Massimo Sgaravatto - INFN Padova Configuration yObjectivity configuration (at least in this first phase): xA single Objectivity FDB containing 50000 events (~ 2 GB): ~ 40KB/event x1 AMS server yApplication: xATLFast++ Tests and reports have been done on a single Sun workstation xDifferent types of test programs: read access (sequentially or not sequentially) write access

4. 26 July 1999Massimo Sgaravatto - INFN Padova Tests on LAN zPreliminary measures have been done at Cern using Atlas 1TB application zPadova: measures using ATLFast++ application using 2 Sun workstations connected via 10BaseT zBologna/Cnaf: measures using ATLFast++ application using 2 Sun workstations connected via 1000BaseT z15 Linux PCs available connected via 100BaseT (porting for Linux OS is on development)

5. 26 July 1999Massimo Sgaravatto - INFN Padova Tests on WAN zConfiguration: y1 Objectivity FDB y1 AMS Server ySeveral client machines located in different geographical sites (Cern, Cnaf/Bologna, Padova, Milano, Genova) zQoS 2Mbps link between Cern and Cnaf (collaboration with TF-Tant)

6. Diff-serv Router Cern Diff-serv Router INFN Cnaf Gigabit Eth. INFN Bologna AMS Server Client GARR-B Router GARR-B Client Genova Client Client Milano AMS Server Client AMS Server Padova QoS Layout

7. 26 July 1999Massimo Sgaravatto - INFN Padova Measurements yWhat we are going to measure: xServer side: CPU and I/O statistics for AMS and LockServer processes xClient side for each job: Wall clock time CPU time I/O statistics xNetwork side: RTT - Throughput - Network load Performance tests with different Classes of Service and collection of network response time

8. 26 July 1999Massimo Sgaravatto - INFN Padova Measurements yWe want to see the performance using many clients (up to 20) with many jobs running from each client yWe are developing tools to automatically submit jobs simultaneously from the various clients and to collect the measured parameters ySimulation tools need other parameters ???

9. 26 July 1999Massimo Sgaravatto - INFN Padova Time schedule zTests on LAN: July/August zTests on WAN: August zContact persons: yBologna/Cnaf: C. Vistoli yMilano: S. Resconi, M. Boschini yPadova: M. Sgaravatto yGenova: A. Brunengo yCern: ???