Server side DCF

Message boards : Server programs : Server side DCF
Message board moderation

To post messages, you must log in.

AuthorMessage
Profile Ananas

Send message
Joined: 27 Jun 06
Posts: 305
Germany
Message 20754 - Posted: 11 Oct 2008, 22:28:16 UTC
Last modified: 11 Oct 2008, 22:32:35 UTC

Lately a lot of projects have really weird settings for fpops_est and fpops_bound, leading to host side correction factors of 25 and more. For old hosts, this doesn't hurt. New hosts with a fairly large cache often receive way more WUs than they can handle, before they have a chance to adjust their DCF.

I think it would be a good idea, to help the project admins with this stuff by slowly(!) adjusting those values towards an average host DCF of 1.

Introducing a DCF on server side could do this job. The average host correction factor could be evaluated daily during the stats export, adjustment of the server side DCF by maybe 5% per day should do. When a new WU is sent out, both fpops_est and fpops_bound should be adjusted according to this server side factor.


p.s.: Adjusting the server side factor smooth is required in order to avoid confusing the old hosts, that have already adjusted their DCF
ID: 20754 · Report as offensive
Profile Ananas

Send message
Joined: 27 Jun 06
Posts: 305
Germany
Message 20764 - Posted: 12 Oct 2008, 8:28:00 UTC - in response to Message 20754.  

... The average host correction factor could be evaluated daily during the stats export, ...


I forgot to add, that this should only include active hosts, as the inactive ones will not adjust their own DCF when the new fpops_est get closer to the real requirements.
ID: 20764 · Report as offensive

Message boards : Server programs : Server side DCF

Copyright © 2024 University of California.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.