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Message-ID: <20141002094418.37f6ecb4@redhat.com>
Date: Thu, 2 Oct 2014 09:44:18 +0200
From: Jesper Dangaard Brouer <brouer@...hat.com>
To: Dave Taht <dave.taht@...il.com>
Cc: Jamal Hadi Salim <jhs@...atatu.com>,
Tom Herbert <therbert@...gle.com>,
David Miller <davem@...emloft.net>,
Linux Netdev List <netdev@...r.kernel.org>,
Eric Dumazet <eric.dumazet@...il.com>,
Hannes Frederic Sowa <hannes@...essinduktion.org>,
Florian Westphal <fw@...len.de>,
Daniel Borkmann <dborkman@...hat.com>,
Alexander Duyck <alexander.duyck@...il.com>,
John Fastabend <john.r.fastabend@...el.com>,
Toke Høiland-Jørgensen <toke@...e.dk>,
brouer@...hat.com, Florian Fainelli <f.fainelli@...il.com>
Subject: Re: [net-next PATCH V5] qdisc: bulk dequeue support for qdiscs with
TCQ_F_ONETXQUEUE
On Wed, 1 Oct 2014 22:18:05 -0700 Dave Taht <dave.taht@...il.com> wrote:
> > I usually also monitors the BQL limits during these tests.
> >
> > grep -H . /sys/class/net/eth4/queues/tx-*/byte_queue_limits/{inflight,limit}
> >
> > To Toke:
> > Perhaps we could convince Toke, to add a netperf-wrapper recorder for
> > the BQL inflight and limit? (It would be really cool to plot together)
>
> I just added a command line mode and support for timestamped limit and
> inflight output to bqlmon
>
> Get it here:
>
> https://github.com/dtaht/bqlmon
>
> That should be sufficient for netperf-wrapper to poll it efficiently.
https://github.com/dtaht/bqlmon/commit/ace44b55e2e521af88ba9927bf30fe615024073d#diff-aacbd6867cca49695bfe76ad2bcd45d1R407
Now, that we are in control of the output format. I would output
something that is easier to parse for netperf-wrapper, e.g. some json
compliant string (it is future extendable and easy to parse for Toke).
Besides the output format, I like you patch to bqlmon.
Perhaps Toke have an opinion on the output formatting from bqlmon?
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Sr. Network Kernel Developer at Red Hat
Author of http://www.iptv-analyzer.org
LinkedIn: http://www.linkedin.com/in/brouer
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