[dpdk-dev] Running 2 process on the same machine

Keren Hochman keren.hochman at lightcyber.com
Tue Nov 8 13:02:32 CET 2016


Also, I can't understand how to define socket-mem. I did not see anything
related to hugepages in /etc/sysctl.conf. Can i mount hugepages to 2
different dirs instead and use --huge-dir ?
Thank you.





















On Tue, Nov 8, 2016 at 11:44 AM, Keren Hochman <keren.hochman at lightcyber.com
> wrote:

> Thank you for your response, I still can not run the 2 process together.
> if I add --no-pci to one process it can replace white and black lists
> right?
>
> Thanks, keren
>
> On Tue, Nov 8, 2016 at 12:36 AM, Wiles, Keith <keith.wiles at intel.com>
> wrote:
>
>>
>> > On Nov 7, 2016, at 7:28 AM, Keren Hochman <keren.hochman at lightcyber.com>
>> wrote:
>> >
>> > Hi,
>> > I need to run 2 process that uses dpdk on the same machine. One uses
>> dpdk
>> > drivers, and the other just read from a pcap file.  If I disable
>> hugepages
>> > in the second process rte_mempool_create fails. What is the correct way
>> to
>> > handle this?
>>
>> If you look at the two scripts in Pktgen pktgen-master.sh and
>> pktgen-slave.sh these two scripts setup two instances of pktgen on the same
>> machine. Plus you can read the README.md file.
>>
>> http://dpdk.org/browse/apps/pktgen-dpdk/refs/
>>
>> You have to make sure you have enough memory (huge pages) allocated for
>> both instances to run.
>>
>> Then use —file-prefix XX to give each instance a different prefix for the
>> huge page files in /dev/hugepages if that is the location of the files on
>> your system. I would remove any files in that directory to free up the
>> memory.
>>
>> Use the —socket-mem to allocate the correct amount of memory for each
>> instances this way DPDK does not consume all the pages for a given instance.
>>
>> Make sure you blacklist the ports you do not want on the first instance
>> using -b option and then blacklist the ports from the first instance while
>> allowing the other ports to be used on the second one.
>>
>> That should do it for most cases.
>>
>> >
>> > Thanks, Keren
>>
>> Regards,
>> Keith
>>
>>
>


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