[dpdk-users] Allocating hugepages for all sockets on single numa

[Sergio Gonzalez Monroy]

Hi Michael,

This looks very much like a VM configuration issue.

Hopefully the following link would contain all the information and 
guidance that you need:
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/Virtualization_Tuning_and_Optimization_Guide/index.html

Thanks,
Sergio

On 28/05/2017 21:58, Dorsett, Michal wrote:
> Hi,
>
> I am running DPDK 2.0.0 on a RH 6.4 VM.
> I have 512 2MB hugepages specified in my grub configuration file.
>
> When the eal is mapping hugepages for use by my application it creates them only for socket 0, which is not what I wish. I would like to use socket 1 & 2.
>
> I tried providing the --socket-mem parameter like so:
>
> --socket-mem=0,256,256
>
> But to no avail.
>
> I see that the maps created for huge pages in /proc/self/maps are all N0=1, which explains why the hugepage_info specifies socket_id = 0.
>
> This is what I get when I run numactl --hardware
>
> available: 1 nodes (0)
> node 0 cpus: 0 1 2 3
> node 0 size: 8191 MB
> node 0 free: 5076 MB
> node distances:
> node   0
>    0:  10
>
> Here is my lscpu output:
>
> Architecture:          x86_64
> CPU op-mode(s):        32-bit, 64-bit
> Byte Order:            Little Endian
> CPU(s):                4
> On-line CPU(s) list:   0-3
> Thread(s) per core:    1
> Core(s) per socket:    1
> Socket(s):             4
> NUMA node(s):          1
> Vendor ID:             GenuineIntel
> CPU family:            6
> Model:                 37
> Stepping:              1
> CPU MHz:               2194.711
> BogoMIPS:              4389.42
> Hypervisor vendor:     VMware
> Virtualization type:   full
> L1d cache:             32K
> L1i cache:             32K
> L2 cache:              256K
> L3 cache:              20480K
> NUMA node0 CPU(s):     0-3
>
> I would like to understand why hugepage mapping happens only on socket 0, and how I can make it map for the other sockets as well.
>
> Your assistance is much appreciated.
>
> Thanks,
>
> Michal Dorsett
> Developer, Strategic IP Group
> Desk: +972 962 4350
> Mobile: +972 50 771 6689
> Verint Cyber Intelligence
> www.verint.com<http://www.verint.com/>
>
>
>
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