r13 - 22 Jan 2009 - 15:49:51 - JohnDeStefanoYou are here: TWiki >  Admins Web > LoadTestsP3

LoadTestsP3

Introduction

Results from previous phases:

General load testing activity in this Phase

  • Continue setting up sites and performing tests in LoadTestsP2
  • Measure iperf ceilings for each site
  • Complete network tunings as in NetworkPerformanceP2
  • Optimize dCache service tunings at BNL, UC, AGLT2

Load test framework deliverables

  • Optimize scheduling for measurement tests to provide meaningful results of throughput performance.
  • Continue plotting adjustments (selection of quantities, scale, labels) in Monalisa to provide best views for facility peformance monitoring.
  • Provide ability to adjust number of streams, payloads (file size, number of files), concurrent transfers.
  • Provide an easily viewable web display of selected Monalisa plots/views
  • Produce a table showinghttps://www.usatlas.bnl.gov/twiki/bin/edit/Admins/LoadTestsP3?t=1201626472 each storage system endpoint for each Tier-2. Should include Host, Directory, Network Link, Read-Speed, Write-Speed.

Storage Endpoint Table

This should be filled out by EACH Tier-2 site. List all used storage endpoints and their relevant information. For the Read and Write you should provide a link to the measurement details, either a web page describing the tests and results or a figure showing the results. Make sure the "Big" testing uses files > 2X the size of the physical memory.

Wenjing can you produce a web page which describes how to run the Read/Write tests by 'time dd' and IOZone and link it here?

Site Host Directory Size(TB) ReadBig WriteBig Read(132MB) Write(132MB)
BNL acas0014.usatlas.bnl.gov /data/dcache_pool_1/pool/test 1TB 29MB/s 54MB/s 150MB/s 270MB/s
BNL acas0600.usatlas.bnl.gov /data/dcache_pool_1/pool/test 400GB        
AGLT2_MSU msufs01.aglt2.org /export/vdisk_{a,b} 20TB 390MB/s 800MB/s 973MB/s 2658MB/s
AGLT2_MSU msufs02.aglt2.org /export/vdisk_{a,b} 20TB 390MB/s 800MB/s 973MB/s 2658MB/s
AGLT2_MSU msufs03.aglt2.org /export/vdisk_{a,b} 20TB 390MB/s 800MB/s 973MB/s 2658MB/s
AGLT2_MSU msufs04.aglt2.org /export/vdisk_{a,b} 20TB 390MB/s 800MB/s 973MB/s 2658MB/s
AGLT2_MSU msufs05.aglt2.org /export/vdisk_{a,b} 20TB 390MB/s 800MB/s 973MB/s 2658MB/s
AGLT2_UM umfs01.grid.umich.edu /data07 4.4TB 303MB/s 312MB/s 682MB/s 2471MB/s
AGLT2_UM umfs02.grid.umich.edu /atlas/data08 11TB 129MB/s 250MB/s 338MB/s 872MB/s
AGLT2_UM umfs03.aglt2.org /atlas/data13 16TB 498MB/s 653MB/s 681MB/s 1645MB/s
AGLT2_UM umfs04.aglt2.org /atlas/data14 16TB 430MB/s 487MB/s 605MB/s 1267MB/s
AGLT2_UM umfs05.aglt2.org /atlas/data16 20TB 271MB/s 688MB/s 873MB/s 2407MB/s
AGLT2_UM umfs06.aglt2.org /atlas/data17{a,b} 20TB 390MB/s 800MB/s 973MB/s 2658MB/s
AGLT2_UM umfs07.aglt2.org /atlas/data17{a,b} 20TB 390MB/s 800MB/s 973MB/s 2658MB/s
AGLT2_UM umfs08.aglt2.org /atlas/data19{a,b} 20TB 390MB/s 800MB/s 973MB/s 2658MB/s
AGLT2_UM umfs09.aglt2.org /atlas/data22{a,b} 20TB 390MB/s 800MB/s 973MB/s 2658MB/s
AGLT2_UM umfs10.aglt2.org /atlas/data22{a,b} 20TB 390MB/s 800MB/s 973MB/s 2658MB/s
AGLT2_UM umfs11.aglt2.org /atlas/data22{a,b} 20TB 390MB/s 800MB/s 973MB/s 2658MB/s
OU_OCHEP_SWT2 tier2-01.ochep.ou.edu /ibrix/data/dq2-cache/test 12TB 200MB/s 100MB/s 200MB/s 100MB/s
OU_OCHEP_SWT2 tier2-02.ochep.ou.edu /ibrix/data/dq2-cache/test 12TB 200MB/s 100MB/s 200MB/s 100MB/s

IOTest Instructions IOTest Instructions .

Target benchmarks

Establish the following benchmarks for tansfers between BNL and Tier2 centers:
  • Memory-to-memory (iperf): >950 Mbps (1 Gpbs links), > 8000 Mbps (10 Gpbs links)
  • Writing (standard "dataset" payload-type): > 110 MB/s sustained over 10 minutes (72 GB) for a 1 Gbps link
  • Reading (standard "dataset" payload-type): > 100 MB/s sustained over 10 minutes for a 1 Gpbs link

-- RobertGardner - 17 Oct 2007

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