On Tue, 16 Feb 2016 12:13:12 +0000 "Stokes, Ian" <ian.sto...@intel.com> wrote:
> > -----Original Message----- > > From: Flavio Leitner [mailto:f...@sysclose.org] > > Sent: Friday, February 12, 2016 1:47 AM > > To: Stokes, Ian > > Cc: dev@openvswitch.org > > Subject: Re: [ovs-dev] [PATCH] INSTALL.DPDK.md: Correct mergeable > > buffers parameter. > > > > On Wed, 10 Feb 2016 10:50:54 +0000 > > Ian Stokes <ian.sto...@intel.com> wrote: > > > > > Update the mergeable buffers paramaters in performance tuning to the > > > correct parameter mrg_rxbuf. > > > > > > Signed-off-by: Ian Stokes <ian.sto...@intel.com> > > > --- > > > INSTALL.DPDK.md | 2 +- > > > 1 files changed, 1 insertions(+), 1 deletions(-) > > > > > > diff --git a/INSTALL.DPDK.md b/INSTALL.DPDK.md index d892788..0f340e5 > > > 100644 > > > --- a/INSTALL.DPDK.md > > > +++ b/INSTALL.DPDK.md > > > @@ -392,7 +392,7 @@ Performance Tuning: > > > This behavior is typically supported and enabled by default, > > however > > > in the case where the user knows that rx mergeable buffers are not > > needed > > > i.e. jumbo frames are not needed, it can be forced off by adding > > > - rx_mrgbuf=off to the QEMU command line options. By not reserving > > multiple > > > + mrg_rxbuf=off to the QEMU command line options. By not reserving > > > +multiple > > > chains of descriptors it will make more individual virtio > > descriptors > > > available for rx to the guest using dpdkvhost ports and this can > > improve > > > performance. > > > > $ qemu-system-x86_64 -device virtio-net-pci,help 2>&1 | grep mrg > > virtio-net-pci.mrg_rxbuf=bool (on/off) > > > > Thanks Flavio, that command is very useful. > Do you think it should be added to the patch or was it meant as an FYI? That isn't relevant to the documentation. It's just how I verified that the patch was doing the right thing. Thanks, -- fbl _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
