[dpdk-dev] [PATCH] eal: make resource initialization more robust

[Thomas Monjalon]

Hi,

2016-01-29 19:22, Jianfeng Tan:
> Current issue: DPDK is not that friendly to container environment, which
> caused by that it pre-alloc resource like cores and hugepages. But there
> are this or that resource limitations, for examples, cgroup, rlimit,
> cpuset, etc.
> 
> For cores, this patch makes use of pthread_getaffinity_np to further
> narrow down detected cores before parsing coremask (-c), corelist (-l),
> and coremap (--lcores).
> 
> For hugepages, this patch adds a recover mechanism to the case that
> there are no that many hugepages can be used. It relys on a mem access
> to fault-in hugepages, and if fails with SIGBUS, recover to previously
> saved stack environment with siglongjmp().

They are some interesting ideas.
However, I am not sure a library should try to be so smart silently.
It needs more feedback to decide wether it can be the default behaviour
or an option.

Please send coremask and hugepage mapping as separate patches as they
are totally different and may be integrated separately.

Thanks