> -----Original Message----- > From: Flavio Leitner [mailto:[email protected]] > Sent: Friday, February 12, 2016 1:47 AM > To: Stokes, Ian > Cc: [email protected] > Subject: Re: [ovs-dev] [PATCH] INSTALL.DPDK.md: Correct mergeable > buffers parameter. > > On Wed, 10 Feb 2016 10:50:54 +0000 > Ian Stokes <[email protected]> wrote: > > > Update the mergeable buffers paramaters in performance tuning to the > > correct parameter mrg_rxbuf. > > > > Signed-off-by: Ian Stokes <[email protected]> > > --- > > 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? > Acked-by: Flavio Leitner <[email protected]> > > -- > fbl _______________________________________________ dev mailing list [email protected] http://openvswitch.org/mailman/listinfo/dev
