From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Pattan, Reshma" <reshma.pattan@intel.com>
Subject: Re: [PATCH v2 1/3] packet_ordering: add statistics for
 each worker thread
Date: Mon, 1 Apr 2019 12:58:22 +0000
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Cc: "Hunt, David" <david.hunt@intel.com>, "Gavin Hu (Arm Technology China)"
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> -----Original Message-----
> From: Phil Yang (Arm Technology China) [mailto:Phil.Yang@arm.com]
> Sent: Saturday, March 30, 2019 4:55 PM
> To: Pattan, Reshma <reshma.pattan@intel.com>; dev@dpdk.org;
> thomas@monjalon.net
> Cc: Hunt, David <david.hunt@intel.com>; Gavin Hu (Arm Technology China)
> <Gavin.Hu@arm.com>; Honnappa Nagarahalli
> <Honnappa.Nagarahalli@arm.com>; nd <nd@arm.com>; nd <nd@arm.com>
> Subject: RE: [PATCH v2 1/3] packet_ordering: add statistics for each work=
er
> thread
>=20
> > -----Original Message-----
> > From: Pattan, Reshma <reshma.pattan@intel.com>
> > Sent: Saturday, March 30, 2019 12:40 AM
> > To: Phil Yang (Arm Technology China) <Phil.Yang@arm.com>;
> > dev@dpdk.org; thomas@monjalon.net
> > Cc: Hunt, David <david.hunt@intel.com>; Gavin Hu (Arm Technology
> > China) <Gavin.Hu@arm.com>; Honnappa Nagarahalli
> > <Honnappa.Nagarahalli@arm.com>; nd <nd@arm.com>
> > Subject: RE: [PATCH v2 1/3] packet_ordering: add statistics for each
> > worker thread
> >
> >
> >
> > > -----Original Message-----
> > > From: Phil Yang [mailto:phil.yang@arm.com]
> > >
> > > The current implementation using '__sync' built-ins to synchronize
> > > statistics within worker threads. '__sync' built-ins functions are
> > > full barriers which will affect the performance, so add a per worker
> > > packets
> > statistics.
> > >
> > > Enable by option --insight-worker.
> > >
> >
> > I don't feel the need of this new option to print per core stats.  Any
> > reason for this?
>=20
> Hi Reshma,
>=20
> Thanks for your comment.
> The per core stats aims at removing the '__sync' builtin full barrier in =
the worker
> thread.
> It records the workload of each core (It shows the bottleneck core as wel=
l).
> Since the maximum core number may be more than 128, so disable the print =
in
> default and add this new option for debugging use.
>=20

Ok fine with me then.=20

Thanks,
Reshma