Re: [RFC] Revised CKRM release

Marcelo Tosatti
2004-05-04T17:34:39Z

On Thu, Apr 29, 2004 at 04:25:21AM -0400, Shailabh Nagar wrote:
> The Class-based Resource Management project is happy to release the
> first bits of a working prototype following a major revision of its
> interface and internal organization.
>
> The basic concepts and motivation of CKRM remain the same as described
> in the overview at http://ckrm.sf.net. Privileged users can define
> classes consisting of groups of kernel objects (currently tasks and
> sockets) and specify shares for these classes. Resource controllers,
> which are independent of each other, can regulate and monitor the
> resources consumed by classes e.g the CPU controller will control the
> CPU time received by a class etc. Optional classification engines,
> implemented as kernel modules, can assist in the automatic
> classification of the kernel objects (tasks/sockets currently) into
> classes.

Cool!

> New in this release are the following:
>
> rbce.ckrm-E12:
>
> Two classification engines (CE) to assist in automatic classification
> of tasks and sockets. The first one, rbce, implements a rule-based
> classification engine which is generic enough for most users. The
> second, called crbce, is a variant of rbce which additionally provides
> information on significant kernel events (where a task/socket could
> get reclassified) to userspace as well as reports per-process wait
> times for cpu, memory, io etc. Such information can be used by user
> level tools to reclassify tasks to new classes, change class shares
> etc.

It sounds to me the classification engine can be moved to userspace?

Such "classification" sounds a better suited to be done there.

Note: I haven't read the code yet.