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H-0242 (H0609-002) September 4, 2006 Computer Science IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt. Carmel 31905 Haifa, Israel Amir Nahir, Danny Raz The Computer Science Department Technion Haifa, Israel Research Division Almaden - Austin - Beijing - Haifa - India - T. J. Watson - Tokyo - Zurich LIMITED DISTRIBUTION NOTICE: This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a Research Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specific requests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g. , payment of royalties). Copies may be requested from IBM T. J. Watson Research Center , P. O. Box 218, Yorktown Heights, NY 10598 USA (email: [email protected]). Some reports are available on the internet at http://domino.watson.ibm.com/library/CyberDig.nsf/home .
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Page 1: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

H-0242 (H0609-002) September 4, 2006Computer Science

IBM Research Report

To Know or Not to Know: On the Needed Amount of Management Information

David BreitgandIBM Research Division

Haifa Research LaboratoryMt. Carmel 31905

Haifa, Israel

Amir Nahir, Danny RazThe Computer Science Department

TechnionHaifa, Israel

Research DivisionAlmaden - Austin - Beijing - Haifa - India - T. J. Watson - Tokyo - Zurich

LIMITED DISTRIBUTION NOTICE: This report has been submitted for publication outside of IBM and will probably be copyrighted if accepted for publication. It has been issued as a ResearchReport for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of IBM prior to publication should be limited to peer communications and specificrequests. After outside publication, requests should be filled only by reprints or legally obtained copies of the article (e.g. , payment of royalties). Copies may be requested from IBM T. J. Watson Research Center , P.O. Box 218, Yorktown Heights, NY 10598 USA (email: [email protected]). Some reports are available on the internet at http://domino.watson.ibm.com/library/CyberDig.nsf/home .

Page 2: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 3: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 4: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 5: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 6: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 7: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 8: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 9: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 10: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 15: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 16: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 17: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 18: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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��ܶï�ðKß6Û���D . ñ�Ûcß�à;ï�Û9Ù3Üóå9ÛWܶÝÉé6ÚKÛ + êMá1é1Û�å�à�á�à��=ð4Ý4Þoé6Ü°ä�ÝQä�ì ( æNâ=à;é1Û���à;é1ÛO�\ùtK¾rø ���U�

0 10 20 30 40 50 601

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Ave

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Per−job load pollingBoad update every time unitBoard update every 2 time unitsBoard update every 4 time unitsBoard update every 190 time units

Traffic Intensity =0.85

��ܶï�ðKß6Ûd0ªD . ñ�Ûcß�à;ï�Û{Ù3ܶå9Û�Ü¶Ý é6ÚKÛ + êlá1é1Û�å ì?ä�ßV� + 2 í�Ü°é6Ú & Ûcß�Ü°älâ4Ü¶Þ ( ærâ4à;é1Û�á�\ùLK|¾rø 0��U�

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Page 19: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Board Update Frequency (once per X time units)A

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d = 2d = 10

Traffic Intensity =0.99

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Page 23: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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Page 24: IBM Research Report · IBM Research Report To Know or Not to Know: On the Needed Amount of Management Information David Breitgand IBM Research Division Haifa Research Laboratory Mt.

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