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From: David Aldrich <david.aldrich.ntml@gmail.com>
Date: Wed, 23 Oct 2024 18:09:18 +0100
Message-ID: <CAJK_ieiOMVPkv5cfjDcSHse4MnZs7rQx8n7c8FTN52Uxg7P=cQ@mail.gmail.com>
Subject: Re: Help needed with hugepages
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: users <users@dpdk.org>
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Thanks for your help.

On Wed, Oct 23, 2024 at 5:54=E2=80=AFPM Stephen Hemminger
<stephen@networkplumber.org> wrote:
>
> On Wed, 23 Oct 2024 17:51:28 +0100
> David Aldrich <david.aldrich.ntml@gmail.com> wrote:
>
> > I guess it is because the huge pages are not mounted. Is mounting
> > required if using kernel parameters to specify the sizes?
> >
> > On Wed, Oct 23, 2024 at 5:47=E2=80=AFPM David Aldrich
> > <david.aldrich.ntml@gmail.com> wrote:
> > >
> > > On Wed, Oct 23, 2024 at 4:39=E2=80=AFPM Stephen Hemminger
> > > <stephen@networkplumber.org> wrote:
> > > >
> > > > On Wed, 23 Oct 2024 16:04:06 +0100
> > > > David Aldrich <david.aldrich.ntml@gmail.com> wrote:
> > > >
> > > > > Hi, we are running on Ubuntu 24.04. The kernel parameters include=
:
> > > > >
> > > > > default_hugepagesz=3D1G hugepagesz=3D1G hugepages=3D25 hugepagesz=
=3D2M hugepages=3D1024
> > > > >
> > > >
> > > > Maybe mixing hugepage sizes can cause confusion?
> > > >
> > > > Did you try using dpdk-hugepages script?
> > >
> > > Thanks. The script shows:
> > >
> > > $ dpdk-hugepages.py -s
> > > Node Pages Size Total
> > > 0    1024  2Mb    2Gb
> > > 0    25    1Gb    25Gb
> > >
> > > So that looks correct.
>
> The DPDK uses the mounted huge pages to find/use them.
>
>
> https://edc.intel.com/content/www/us/en/design/products/ethernet/config-g=
uide-e810-dpdk/hugepages-setup/