From mboxrd@z Thu Jan  1 00:00:00 1970
From: Iain Barker <iain.barker@oracle.com>
Subject: Re: Question about DPDK hugepage fd change
Date: Tue, 5 Feb 2019 16:49:39 -0500
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To: "Wiles, Keith" <keith.wiles@intel.com>
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>=20
> Maybe I do not see the full problem here. If DPDK used poll instead of sel=
ect it would solve the 1024 problem as poll has a high limit to the number o=
f file descriptors at least that was my assumption.=20
>>=20

Thanks Keith.=20

The issue is not whether DPDK is using poll or select on the fd=E2=80=99s.

The issue is that DPDK is raising the per-process number of fd=E2=80=99s abo=
ve the maximum that glibc supports for select().=20

Therefore no other code within that process can reliably use select() on an f=
d set, because any file that is opened may get an fd number > 1024.