On Mon, Jun 19, 2006 at 12:03:23PM -0700, Chandra Seetharaman wrote: > On Sun, 2006-06-18 at 17:28 +1000, Nick Piggin wrote: > > > OK... let me put it more clearly. What are the requirements?
At a very broad-level, all the requirements pointed by Chandra below boil down to the requirement of providing guaranteed CPU usage for a group of tasks and the ability of limiting (hard or soft) CPU usage of other group of tasks. At a finer-level, this broad requirement could be interpreted and implemented in a number of ways (ex: by having kernel support only task-level limit and implementing group-level in user-space etc) and thats what this RFC was about - to discuss what minimal kernel support would be needed to support the above broad requirement! > Nick, > > Here are some requirements we(Resource Groups aka CKRM) are working > towards (Note that this is not limited to CPU alone): > > In a enterprise environment: > - Ability to group applications into their importance levels and assign > appropriate amount of resources to them. > - In case of server consolidation, ability to allocate and control > resources to a specific group of applications. Ability to > account/charge according to their usages. > - manage multiple departments in a single OS instance with ability to > allocate and control resources department wise (similar to above > requirement :) > - ability to guarantee "time to complete" for a specific user > request (by controlling resource usage starting from the web server > to the database server). > - In case of ISPs and ASPs, ability to guarantee/limit usages to > independent clients (in a single OS instance). > - Ability to control runaway processes from bringing down the system > response (DoS attacks, fork bombs etc.,) > > In a university environment (can be treated as a subset of enterprise > requirements above): > - Ability to limit resource consumption at individual user level. > - Ability to control runaway processes. > - Ability for a user to manage resources allocated to them (as > explained in the desktop environment below). > > In a desktop environment: > - Ability to control resource usage of a set of applications > (ex: infamous updatedb issue). > - Ability to run different loads and get the expected result (like > checking emails or browsing Internet while compilation is in > progress) > > Generic: > Provide these resource management capabilities with less overhead on > overall system performance. -- Regards, vatsa _______________________________________________ ckrm-tech mailing list https://lists.sourceforge.net/lists/listinfo/ckrm-tech
