1 / 7

Back of the Envelope Estimation

Learn how to make quick and reliable estimates for resource allocation through Queuing Theory and by assessing resource quantities such as time, CPU seconds, memory, I/O, and more.

mfarrow
Download Presentation

Back of the Envelope Estimation

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. Back of the Envelope Estimation

  2. Principles • Work does not compress • A bad estimate is better than none. • Use Queuing Theory • Look at the resources

  3. Quantities • Time • CPU seconds of processes and functions • Code size • Instruction path lengths • Real time/Response time • Support time • Back up, batch audits, admin duties

  4. Quantities (cont.) • Memory • Text, data, bss, stack, heap of a process • Shared memory • System resources • Message queues • Buffers • System tables

  5. Quantities (cont.) • I/O • Bandwidth of channels • Number of concurrent I/O ops • Data Size • Disk speed

  6. Quantities (cont.) • Messages • Quantity per unit time • Distribution over type, priority, time, etc. • Transit time in the system

  7. Estimation

More Related