netdev - Re: [V2 RFC net-next PATCH 2/2] virtio_net: export more statistics through ethtool

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Message-ID: <1339102684.2770.27.camel@bwh-desktop.uk.solarflarecom.com>
Date:	Thu, 7 Jun 2012 21:58:04 +0100
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Rick Jones <rick.jones2@...com>
CC:	David Miller <davem@...emloft.net>, <jasowang@...hat.com>,
	<netdev@...r.kernel.org>, <rusty@...tcorp.com.au>,
	<virtualization@...ts.linux-foundation.org>,
	<linux-kernel@...r.kernel.org>, <mst@...hat.com>
Subject: Re: [V2 RFC net-next PATCH 2/2] virtio_net: export more statistics
 through ethtool

On Thu, 2012-06-07 at 21:56 +0100, Ben Hutchings wrote:
> On Thu, 2012-06-07 at 13:39 -0700, Rick Jones wrote:
> > On 06/07/2012 01:24 PM, Ben Hutchings wrote:
> > > On Thu, 2012-06-07 at 13:05 -0700, David Miller wrote:
> > >> From: Ben Hutchings<bhutchings@...arflare.com>
> > >> Date: Thu, 7 Jun 2012 18:15:06 +0100
> > >>
> > >>> I would really like to see some sort of convention for presenting
> > >>> per-queue statistics through ethtool.  At the moment we have a complete
> > >>> mess of different formats:
> > >>
> > >> Indeed.  Probably ${QUEUE_TYPE}-${INDEX}-${STATISTIC} is best.
> > >> With an agreed upon list of queue types such as "rx", "tx", "rxtx"
> > >> etc.
> > >
> > > I think we should leave the type names open-ended, as there are other
> > > useful groupings like per-virtual-port.  In that case the separator
> > > should be chosen to allow arbitrary type names without ambiguity.
> > 
> > So you mean like something along the lines of the presence of say '.' 
> > indicating indent a level:
> > 
> > rx_bytes:  1234
> >      myqueue1.rx_bytes: 234
> >      myqueue2.rx_bytes: 345
> >      ...
> 
> Most drivers seem to want this sort of ordering/grouping:
> 
> group0.foo
> group0.bar
> ...
> group1.foo
> group1.bar
> ...
> 
> but if we have a standard way of indicating groups of statistics then
> the user can choose whether they want to reorder by type name.

I mean, whether they want to reorder/regroup by the final part of the
statistic name.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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