Is there any way to connect to the same pci from 2 different applications? Both applications do not transmit any data, and one application only uses rte_eal_init and rte_eth_link? Thank you, Keren
On Mon, Sep 12, 2016 at 4:29 PM, Wiles, Keith <keith.wiles at intel.com> wrote: > > Regards, > Keith > > > On Sep 12, 2016, at 6:18 AM, Keren Hochman <keren.hochman at lightcyber.com> > wrote: > > > > Hi, > > I tried to run 2 instances of testpmd from the same machine but received > a > > message: Cannot get hugepage information when I tried to run the second > > instance. Is there a way to disable hugepages or allow to instances to > > access it ? Thanks. keren > > Running two instances or more DPDK applications you need to make sure the > resources are split up correctly. You did not supply your command lines > being used, but I will try to state how it is done. > > First memory or huge pages must to allocated to each instance using the > ?socket-mem 128,128 or ?socket-men 128 if you only have one socket in your > system. Make sure you have enough huge pages allocated in the > /etc/sysctl.conf file for both instances. In the ?socket-mem 128,128 you > are giving 256 huge pages to one instance and if the second instance used > ?socket-mem 256,256 then 512 pages, which means you need 256+512 huge pages > in the system. > > Next the huge page files in the /dev/hugepage directory must have > different prefixes by using the ?file-prefix option giving different file > prefixes for each instance. If you have already run DPDK instance once > without the option please ?sudo rm -fr /dev/hupages/*? to release the > current huge pages. > > Next you need to make sure you blacklist the port using the -b option on > the command line of the ports not used by this instance. Each instance > needs to blacklist the ports not being used. This seems to be the easiest > for me, but you could look into use the whitelist option as well. > > Next make sure you allocate different cores to each instance using the -c > or -l option, the -l option is a bit easier to read IMO. > > Next use the ?proc-type auto in both instances just to be clear. This > could be optional I think. > > I hope this helps. You can also pull down Pktgen and look at the > pktgen-master.sh and pktgen-slave.sh scripts and modify them for your > needs. http://dpdk.org/download <http://dpdk.org/download> > >
