lkml.org 
[lkml]   [2006]   [Aug]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRe: [ckrm-tech] [RFC][PATCH] UBC: user resource beancounters
    From
    Date
    On Fri, 2006-08-25 at 21:52 +0100, Alan Cox wrote:
    > Ar Gwe, 2006-08-25 am 11:47 -0700, ysgrifennodd Chandra Seetharaman:
    > > I think my original point is getting lost in the discussion, which is,
    > > there should be way (for the sysadmin) to get a list of tasks belonging
    > > to a resource group (in a non-container environment).
    >
    > Ok that much is easy to deal with. You print the luid in /proc.
    >
    > > - ability for the sysadmin to move a task to a resource group.
    >
    > So you want a setpluid(pid, luid) ? Trivial to add although you might
    > want to refuse it in many secure environments but thats an SELinux rule
    > again.

    yes.
    >
    > > - assignment of task to a resource group should be transparent to the
    > > app.
    >
    > In those cases its akin to and matches security domain transitions which
    > says to me SELinux (or AppArmour) should do it.

    If setpluid(pid, luid) exists, then this is more easy to handle.
    >
    > > - a resource group could exist with no tasks associated.
    >
    > Bean counters can exist with no tasks, and the CKRM people have been
    > corrected repeatedly on this point.

    Hmm... from what I understand from the code, when the last resource in
    the beancounter is dropped, the beancounter is destroyed. Which to me
    means that when there are no tasks in a beancounter it will be
    destroyed. (I just tested the code and verified that the beancounter is
    destroyed when the task dies).

    Please correct me if my understanding is incorrect.

    Let me reword the requirement: beancounter/resource group should _not_
    be destroyed implicitly. It should be destroyed only when requested by
    the user/sysadmin. In other words, we need a create_luid() and
    destroy_luid().
    >
    >
    >
    > -------------------------------------------------------------------------
    > Using Tomcat but need to do more? Need to support web services, security?
    > Get stuff done quickly with pre-integrated technology to make your job easier
    > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
    > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
    > _______________________________________________
    > ckrm-tech mailing list
    > https://lists.sourceforge.net/lists/listinfo/ckrm-tech
    --

    ----------------------------------------------------------------------
    Chandra Seetharaman | Be careful what you choose....
    - sekharan@us.ibm.com | .......you may get it.
    ----------------------------------------------------------------------


    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2006-08-26 00:25    [W:2.321 / U:0.032 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site