Hi Chandra ,
I tried uncommenting the code from the function
u specified.
But machine stops responding.
Sometimes it stop responding when i cat members
of affected class , sometimes when i start
different shell etc.
This happened aroung 5-6 times.
I will try to debug it .
thanks,
--kiran
--- Chandra Seetharaman <[EMAIL PROTECTED]> wrote:
> On Wed, Feb 23, 2005 at 04:47:58AM -0800, mehta
> kiran wrote:
>
> Kiran,
>
> As I said in my earlier mail, tag is there and it is
> usable currently.
> It is just not inherited... The code is already
> there, but commented out.
> I am trying to remember if there was any problem
> with that feature.
>
> You can try it by uncommenting the code that copies
> the app_tag in
> rbcemod.c:create_private_data(), and run some tests.
>
> chandra
>
> > Hi Chandra ,
> > Thanks.
> > but i have a small query which remains
> > unanswered.
> > I went through resource management on
> > other operating systems.SRM
> > (Solaris resource Manager) , PRM(Process
> > Resource Manager on HP) have entity called
> as
> > projectid (same as application tag on
> linux)
> > which is being used by many application
> >
> >
> > This feature may be very important users
> > perspective.
> > Are you planning to enable application tag
> > on linux in near future ?
> >
> > Please let me know.
> >
> > thanks,
> > --kiran
> >
> > --- Chandra Seetharaman <[EMAIL PROTECTED]>
> wrote:
> >
> > > On Mon, Feb 21, 2005 at 08:37:14PM -0800, mehta
> > > kiran wrote:
> > > > Hi Chandra ,
> > > > Your reply was definitely helpful.
> > > > 1.From your reply what i concluded is that
> > > > *if* after fork child belongs to the same
> > > class
> > > > as parent(in accordance with CE rules) ,
> then
> > > > both parent and child will respect
> attribute
> > > > values(ex: amount of cpu or mem pages).
> > > yes.
> > >
> > > > 2.But is there any way to specify a rule ,
> so
> > > > that all the descendents of a process
> belong
> > > > to same class.
> > >
> > > Inheriting tags would provide this
> functionality.
> > > Currently, it is
> > > disabled.. I don't exactly remember why we
> disabled
> > > it. will try to
> > > remember.
> > >
> > > > 3.From other mails on this mailing list ,
> I
> > > > inferred that tag(application tag) cannot
> be
> > > > used for this purpose.
> > > > 4.I can not find any info on "tag".
> > > > If i start a new process what will be its
> > > > tag.Is it inherited by child?
> > >
> > > Tag gets associated with a process only when you
> > > write the "pid tag" to the
> > > rbce_tag file. currently it is not inherited, so
> > > there is no tag for a
> > > process at fork.
> > > Also, tags come into picture only if you have
> RBCE.
> > >
> > > >
> > > > Example:
> > > >
> > > > I have bash running. If i do
> > > > # su - abc
> > > > then new process created goes in
> > > > a different class.
> > > > I could not find any rule which can hold
> both
> > > > parent and child in same class if child
> pid,
> > > > child gid change.(child is diffrent
> command
> > > then
> > > > parent nad hence cmd and args will not
> always
> > >
> > > > prove useful)
> > > >
> > > > 5. If whatever i told above is not wrong,
> > > > any plans to provide such a facility?
>
> > > >
> > > > thanks & regards,
> > > > --kiran
> > > >
> > > >
> > > > --- Chandra Seetharaman <[EMAIL PROTECTED]>
> > > wrote:
> > > >
> > > > > On Mon, Feb 21, 2005 at 02:12:10AM -0800,
> mehta
> > > > > kiran wrote:
> > > > > > Hi ,
> > > > > > If CKRM is being used , is it always
> > > > > guaranteed
> > > > > > that child inherits parents attribute
> values.
> > > > >
> > > > > In the absence of CE, at fork(), parent's
> class
> > > _is_
> > > > > inherited
> > > > > by the child.
> > > > >
> > > > > If you have a CE, then the CE determines
> where
> > > the
> > > > > new task ends, CE
> > > > > could decide the classification at fork(),
> > > exec() or
> > > > > any other kernel
> > > > > classification points. For example, in RBCE
> if
> > > you
> > > > > have a rule
> > > > >
> "cmd=sleep,class=/rcfs/taskclass/sleep_class",
> > > and
> > > > > bash belongs to
> > > > > /rcfs/taskclass, then when sleep is invoked
> from
> > > > > bask, at fork(), the new
> > > > > task will belong to /rcfs/taskclass, and
> after
> > > exec
> > > > > it will be moved to
> > > > > /rcfs/taskclass/sleep_class.
> > > > >
> > > > >
> > > > > > Ex: parent uses 10% of cpu then will child
> > > > > > also use 10% of avaible cpu
> > > > >
> > > > > They both will belong to the same class, and
> the
> > > > > class will be entitled to
> > > > > 10% of available cpu.
> > > > > >
> > > > > > thanks,
> > > > > > --kiran
> > > > > >
> > > > > >
> > > > > >
> > >
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