DPDK usage discussions
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From: "Trahe, Fiona" <fiona.trahe@intel.com>
To: "Templin (US), Fred L" <Fred.L.Templin@boeing.com>,
	users <users@dpdk.org>
Cc: "Trahe, Fiona" <fiona.trahe@intel.com>
Subject: Re: [dpdk-users] Multiple DPDK application instances on the same	machine?
Date: Wed, 9 Oct 2019 17:49:09 +0000	[thread overview]
Message-ID: <348A99DA5F5B7549AA880327E580B43589831D45@IRSMSX101.ger.corp.intel.com> (raw)
In-Reply-To: <c56ac6bd1c884a6ea7f40d40b6150f95@boeing.com>

Hi Fred,

There may be other ways, but this is what I do:
I use --file-prefix <some_unique_name> and -m <some usubset of the total huge pages>
so I can run multiple instances of the tests in parallel.
e.g.
./dpdk/app/test --file-prefix myProcess1 -m 128  (plus some other options)
./dpdk/app/test --file-prefix myProcess2 -m 128  

The prefix is used to mark separate memory allocations and the -m limits the amount of memory used by the process so there's some available for other processes.
Hope this helps
Fiona



> -----Original Message-----
> From: users [mailto:users-bounces@dpdk.org] On Behalf Of Templin (US), Fred L
> Sent: Wednesday, October 9, 2019 6:07 PM
> To: users <users@dpdk.org>
> Subject: [dpdk-users] Multiple DPDK application instances on the same machine?
> 
> Hi, we have a need to run multiple instances of applications that use the DPDK library on the
> same machine. We are currently working with only two instances, but can't even get that to
> work because the two seem to interfere with each other in terms of mempool creation. In
> the future, we are going to want to have many more instances of the app all running in the
> same physical/virtual machine. Is there a way to run multiple DPDK-using applications on
> the same machine?
> 
> We note that there is only one /sys/kernel/mm/hugepages/ area per machine, and our
> instructions were for *each application* to set the number of hugepages. Could it be that
> there needs to be a way for the application instances to cooperatively share this area
> instead of interfering with one another?
> 
> Thanks - Fred

  reply	other threads:[~2019-10-09 17:49 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-09 17:06 Templin (US), Fred L
2019-10-09 17:49 ` Trahe, Fiona [this message]
2019-10-09 21:54   ` Wiles, Keith
2019-10-09 21:59     ` Templin (US), Fred L

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