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Message-ID: <20160524145333-mutt-send-email-mst@redhat.com> Date: Tue, 24 May 2016 14:54:37 +0300 From: "Michael S. Tsirkin" <mst@...hat.com> To: Jesper Dangaard Brouer <brouer@...hat.com> Cc: linux-kernel@...r.kernel.org, Jason Wang <jasowang@...hat.com>, Eric Dumazet <eric.dumazet@...il.com>, davem@...emloft.net, netdev@...r.kernel.org, Steven Rostedt <rostedt@...dmis.org> Subject: Re: [PATCH v5 2/2] skb_array: ring test On Tue, May 24, 2016 at 12:28:09PM +0200, Jesper Dangaard Brouer wrote: > On Mon, 23 May 2016 23:52:47 +0300 > "Michael S. Tsirkin" <mst@...hat.com> wrote: > > > On Mon, May 23, 2016 at 03:09:18PM +0200, Jesper Dangaard Brouer wrote: > > > On Mon, 23 May 2016 13:43:46 +0300 > > > "Michael S. Tsirkin" <mst@...hat.com> wrote: > > > > > > > Add ringtest based unit test for skb array. > > > > > > > > Signed-off-by: Michael S. Tsirkin <mst@...hat.com> > > > > --- > > > > tools/virtio/ringtest/skb_array.c | 167 ++++++++++++++++++++++++++++++++++++++ > > > > tools/virtio/ringtest/Makefile | 4 +- > > > > > > Patch didn't apply cleanly to Makefile, as you also seems to have > > > "virtio_ring_inorder", I manually applied it. > > > > > > I chdir to tools/virtio/ringtest/ and I could compile "skb_array", > > > BUT how do I use it??? (the README is not helpful) > > > > > > What is the "output", are there any performance measurement results? > > > > First, if it completes successfully this means it completed > > a ton of cycles without errors. It caches any missing barriers > > which aren't nops on your system. > > I applied these patches on net-next (at commit 07b75260e) and the > skb_array test program never terminates. Strangely if I use your git > tree[1] (on branch vhost) the program does terminate... I didn't spot > the difference. Oh, that's my bad. You need ringtest: pass buf != NULL just a stub pointer for now. Signed-off-by: Michael S. Tsirkin <mst@...hat.com> from my tree. -- MST
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