[dpdk-dev] disable hugepages
On 11/10/2016 02:10 PM, Wiles, Keith wrote: > >> On Nov 10, 2016, at 6:32 AM, Keren Hochman >> wrote: >> >> I tried using the following dpdk options: >> --no-huge --vdev eth_pcap0 ,rx_pcap=/t1,tx_pcap=/t2 >> *It's worked but the number of elements is limited, although the machine >> has enough free memory. *rte_mempool_create is failed when I'm trying to >> allocate more memory. Is there any limitation on the memory beside the >> machine? > > DPDK will just use the standard linux memory allocator, so no limitation in > DPDK. Now you could be hitting the limit as a user, need to check your system > to make sure you can allocate that much memory to a user. Try using the > command ulimit and see what it reports. > > I do not remember exactly how to change limits except with ulimit command. I > may have modified /etc/security/limits.conf file. I don't think it's a ulimit issue. Actually, the memory is reserved once at startup. The -m EAL option allows to specify the amount of memory allocated: -m MB Memory to allocate (see also --socket-mem) So I guess setting it to an higher value (256?) would do the job. Regards, Olivier
[dpdk-dev] disable hugepages
I tried using the following dpdk options: --no-huge --vdev eth_pcap0 ,rx_pcap=/t1,tx_pcap=/t2 *It's worked but the number of elements is limited, although the machine has enough free memory. *rte_mempool_create is failed when I'm trying to allocate more memory. Is there any limitation on the memory beside the machine? *Thanks, Keren * On Wed, Nov 9, 2016 at 4:50 PM, Olivier Matz wrote: > Hi Keren, > > On 11/09/2016 03:40 PM, Keren Hochman wrote: > > On Wed, Nov 9, 2016 at 3:40 PM, Christian Ehrhardt < > > christian.ehrhardt at canonical.com> wrote: > > > >> > >> On Wed, Nov 9, 2016 at 1:55 PM, Keren Hochman < > >> keren.hochman at lightcyber.com> wrote: > >> > >>> how can I create mempool without hugepages?My application is running > on a > >>> pcap file so no huge pages is needed ? > >>> > >> > >> Not sure if that is what you really want (Debug use only), but in > general > >> no-huge is available as EAL arg > >> > >> From http://pktgen.readthedocs.io/en/latest/usage_eal.html : > >> > >> EAL options for DEBUG use only: > >> --no-huge : Use malloc instead of hugetlbfs > >> > > I need this option only for testing. How can I use rte_mempool_create if > I > > use --no-huge? > > When using --no-huge, the dpdk libraries (including mempool) allocate > its memory in standard memory. Just keep in mind the physical addresses > will be wrong, so this memory cannot be given to hw devices. > > Regards, > Olivier >
[dpdk-dev] disable hugepages
> On Nov 10, 2016, at 6:32 AM, Keren Hochman > wrote: > > I tried using the following dpdk options: > --no-huge --vdev eth_pcap0 ,rx_pcap=/t1,tx_pcap=/t2 > *It's worked but the number of elements is limited, although the machine > has enough free memory. *rte_mempool_create is failed when I'm trying to > allocate more memory. Is there any limitation on the memory beside the > machine? DPDK will just use the standard linux memory allocator, so no limitation in DPDK. Now you could be hitting the limit as a user, need to check your system to make sure you can allocate that much memory to a user. Try using the command ulimit and see what it reports. I do not remember exactly how to change limits except with ulimit command. I may have modified /etc/security/limits.conf file. HTH > > *Thanks, Keren * > > On Wed, Nov 9, 2016 at 4:50 PM, Olivier Matz > wrote: > >> Hi Keren, >> >> On 11/09/2016 03:40 PM, Keren Hochman wrote: >>> On Wed, Nov 9, 2016 at 3:40 PM, Christian Ehrhardt < >>> christian.ehrhardt at canonical.com> wrote: >>> On Wed, Nov 9, 2016 at 1:55 PM, Keren Hochman < keren.hochman at lightcyber.com> wrote: > how can I create mempool without hugepages?My application is running >> on a > pcap file so no huge pages is needed ? > Not sure if that is what you really want (Debug use only), but in >> general no-huge is available as EAL arg From http://pktgen.readthedocs.io/en/latest/usage_eal.html : EAL options for DEBUG use only: --no-huge : Use malloc instead of hugetlbfs >>> I need this option only for testing. How can I use rte_mempool_create if >> I >>> use --no-huge? >> >> When using --no-huge, the dpdk libraries (including mempool) allocate >> its memory in standard memory. Just keep in mind the physical addresses >> will be wrong, so this memory cannot be given to hw devices. >> >> Regards, >> Olivier >> Regards, Keith
[dpdk-dev] disable hugepages
I need this option only for testing. How can I use rte_mempool_create if I use --no-huge? Thank you, Keren On Wed, Nov 9, 2016 at 3:40 PM, Christian Ehrhardt < christian.ehrhardt at canonical.com> wrote: > > On Wed, Nov 9, 2016 at 1:55 PM, Keren Hochman < > keren.hochman at lightcyber.com> wrote: > >> how can I create mempool without hugepages?My application is running on a >> pcap file so no huge pages is needed ? >> > > Not sure if that is what you really want (Debug use only), but in general > no-huge is available as EAL arg > > From http://pktgen.readthedocs.io/en/latest/usage_eal.html : > > EAL options for DEBUG use only: > --no-huge : Use malloc instead of hugetlbfs > > > >
[dpdk-dev] disable hugepages
Hi Keren, On 11/09/2016 03:40 PM, Keren Hochman wrote: > On Wed, Nov 9, 2016 at 3:40 PM, Christian Ehrhardt < > christian.ehrhardt at canonical.com> wrote: > >> >> On Wed, Nov 9, 2016 at 1:55 PM, Keren Hochman < >> keren.hochman at lightcyber.com> wrote: >> >>> how can I create mempool without hugepages?My application is running on a >>> pcap file so no huge pages is needed ? >>> >> >> Not sure if that is what you really want (Debug use only), but in general >> no-huge is available as EAL arg >> >> From http://pktgen.readthedocs.io/en/latest/usage_eal.html : >> >> EAL options for DEBUG use only: >> --no-huge : Use malloc instead of hugetlbfs >> > I need this option only for testing. How can I use rte_mempool_create if I > use --no-huge? When using --no-huge, the dpdk libraries (including mempool) allocate its memory in standard memory. Just keep in mind the physical addresses will be wrong, so this memory cannot be given to hw devices. Regards, Olivier
[dpdk-dev] disable hugepages
Hi, how can I create mempool without hugepages?My application is running on a pcap file so no huge pages is needed ? Thanks.
[dpdk-dev] disable hugepages
On Wed, Nov 9, 2016 at 1:55 PM, Keren Hochman wrote: > how can I create mempool without hugepages?My application is running on a > pcap file so no huge pages is needed ? > Not sure if that is what you really want (Debug use only), but in general no-huge is available as EAL arg >From http://pktgen.readthedocs.io/en/latest/usage_eal.html : EAL options for DEBUG use only: --no-huge : Use malloc instead of hugetlbfs
