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CDF Analysis Diskpool Status

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Agregate rate. PNFS database performance testing. Initial results 'interesting' ... Finish User use case profiles in 1-2 weeks (including interviews) ... – PowerPoint PPT presentation

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Title: CDF Analysis Diskpool Status


1
CDF Analysis Diskpool Status
  • Doug Benjamin and Dave Ambrose
  • with help from Alexei Varganov
  • Use Case analysis
  • Analysis of Billing and door DBs
  • System tests
  • fileserver rate tests
  • Pnfs database rate tests
  • New hardware (CMS Sataboy on loan)
  • Plans

2
Daily diskpool usage
D. Ambrose
3
jobs by user (Total/write/read)
D. Ambrose
4
Example user profile
  • Most prolific user
  • Reading only
  • ntuples

D Ambrose
5
Example user profile
  • Most prolific writer
  • Writing ntuples
  • Reading ntuples

D Ambrose
6
System testing
  • Fileserver read performance
  • By server
  • Agregate rate
  • PNFS database performance testing
  • Initial results interesting
  • More work needed to understand the results

A Varganov
7
120 MB/s
Various fileservers
0 MB/s
120 MB/s
0 MB/s
D Ambrose
30 jobs
100 jobs
A Varganov
8
Plans/Conclusions
  • Finish User use case profiles in 1-2 weeks
    (including interviews)
  • Finish hardware testing 1-2 weeks
  • Including borrowed CMS hardware
  • Summarize results
  • Plan for first formal preproduction readiness
    review week of 15-May
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