Re: quotas [was: thread ids, task ids and subsystems]

[Marcus Brinkmann]

On Wed, Apr 16, 2003 at 12:01:08PM +0200, Michal 'hramrach' Suchanek wrote:
> IIRC most quota problems were already discussed specifically for memory.

I am unaware of any discussion of these issues.

> The protocol for obtaining memory could be probably generealized for any
> resource.

i think you still didn't take into account the unique design features of the
Hurd.

> I cannot remember any solution for the problem of reclaiming resources, which
> is probably the same for all types of resources.

If I can not reclaim a resource I provided to an untrusted server, then the
design is incomplete.

> It looks like there are basically two types of resources that a user could
> spend:
>  - real hardware resources (like memory, cpu time, network bandwidth,
>       disk space, ...)

Those are the only resources that matter.

>  - some artifical resources that may correspond to system resources indirectly
> (ie database transactions, file handles, sound records)

There is no need to care about these in the Hurd.  A file handle is just a
connection to a server and should be accounted for with the resources the
server needs to keep the connection.

Thanks,
Marcus

-- 
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Marcus Brinkmann              The Hurd http://www.gnu.org/software/hurd/
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