Hello Davesh,
You could probably use something like this:
To check the requests coming from cpus0
if (system()->getMasterName(pkt->req->masterId()) == "switch_cpus0.data")
{}
Hope this helps.
Thanks,
Prathap
On Mon, Jul 20, 2015 at 6:09 PM, Davesh Shingari <shingaridav...@gmail.com>
wrote:
> Polydoros Petrakis <polpetras <at> gmail.com> writes:
>
> >
> >
> > Maybe you can check the physical memory range allocated for each
> process and track requests depending on the access address. (Check which
> range it belongs to)
> >
> >
> > On 31 March 2015 at 00:30, Prathap Kolakkampadath <kvprathap <at>
> gmail.com> wrote:
> >
> >
> >
> >
> > Hello Andreas,
> > I am trying to collect the per request memory access latency of a
> specific linux process Read requests. I am running two memory intensive
> linux processes in a single core.
> > In my understanding, the Thread id/Context id, Master id are the same
> for the two process memory requests running in the same core. So I won't
> be able to differentiate the requests of one process from the other
> using that. Is it possible to differentiate the memory requests at DRAM
> Controller layer based on linux process id?
> >
> >
> > Thanks,
> > Prathap
> >
> >
> >
> >
> >
> > On Mon, Mar 30, 2015 at 12:35 PM, Andreas Hansson <Andreas.Hansson
> <at> arm.com> wrote:
> >
> >
> >
> >
> >
> >
> >
> > Hi Prathap,
> >
> > Could you be a bit more specific about what you mean by “tracking
> requests”. Each request that originates in the CPU has an ASID and
> ThreadID associated with it, as well as a MasterID. You should be able
> to access these at the DRAM controller if that’s
> > what you’re after. Note that you end up getting requests without this
> information (write backs etc), so you cannot always rely on it.
> >
> > Andreas
> >
> >
> >
> > From: Prathap Kolakkampadath <kvprathap <at> gmail.com>Reply-To: gem5
> users mailing list <gem5-users <at> gem5.org>Date: Monday, 30 March 2015
> 17:27To: gem5 users mailing list <gem5-users <at> gem5.org>Subject:
> [gem5-users] Tracking DRAM requests from a process
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Hello Users,
> >
> > I am running Gem5 on ARM FS mode using classic memory system. I am
> running two process on a single core. I need to track the DRAM requests
> (memory access latency) of a particular process. Is it possible to
> identify the process id of a linux process in the DRAM
> > Controller layer?
> >
> >
> >
> >
> > Thanks,
> >
> > Prathap Kumar Valsan
> >
> >
> >
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> >
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>
> Hi
>
> Did you find a way to know the core where the memory request originated?
>
> If I use function to get threadId or asid, I get following error:
> gem5.opt: build/ARM/mem/request.hh:533: int Request::getAsid() const:
> Assertion `privateFlags.isSet(VALID_VADDR)' failed.
>
> And for masterId, the number changes with simulation (I think it is
> generated statically).
>
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