1 / 9

Proactive Detection of Software Aging Mechanisms in Performance Critical Computers

Proactive Detection of Software Aging Mechanisms in Performance Critical Computers. Paritosh Sumrao 10IT20F MTech IT. Software aging. phenomenon in which the state of the software system degrades with time.

thuy
Télécharger la présentation

Proactive Detection of Software Aging Mechanisms in Performance Critical Computers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Proactive Detection of Software Aging Mechanisms in Performance Critical Computers ParitoshSumrao 10IT20F MTech IT

  2. Software aging • phenomenon in which the state of the software system degrades with time. • can include memory leaks, unreleased file locks, accumulation of un terminated threads, data corruption/round-off accrual, file space, fragmentation, shared memory pool latching, and others. • Solution: Software rejuvenation. • Time based • Prediction based.

  3. Diagnostic Procedure Overview

  4. Diagnostic Procedure Overview cont.. • Training data should be exhaustive and correct. • Procedure for fault detection. • ‘Residual’ for all signal values is computed. • Sequential Probability Ratio Test (SPRT) technique is employed to find the anomaly.

  5. SPRT (Sequential Probability Ratio Test ) • The sequential probability ratio test (SPRT) is a specific sequential hypothesis test. • The SPRT technique is a better because it is sensitive not only to disturbances in the signal mean, but also to very subtle changes in the statistical quality (variance, skew ness, bias) of the signals.

  6. Performance parameters

  7. Fig: A: Estimate.. B. Residual .and C: Alarm

  8. References • “Proactive Detection of Software Aging Mechanisms in Performance Critical Computers” by Kenny C. Gross, Vatsal Bhardwaj, Randy Bickford • www.en.wikipedia.org/wiki/Sequential_probability_ratio_test , SPRT

  9. Thank you !!

More Related