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[Qemu-devel] Re: [PATCH v2 0/4] virtio-net: More configurability and bh
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] Re: [PATCH v2 0/4] virtio-net: More configurability and bh handling for tx |
Date: |
Thu, 2 Sep 2010 18:35:16 +0300 |
User-agent: |
Mutt/1.5.20 (2009-12-10) |
On Thu, Sep 02, 2010 at 09:00:42AM -0600, Alex Williamson wrote:
> Incorporated feedback. txburst= and txtimer= are now "x-" prefixed
> developer options. I added a tx= option, because I do want there to
> be a supported way to switch between TX strategies. This also drops
> the magic value of txtimer= 1 or 0 (setting default timeout or switching
> modes). I also dropped the trickiness around only enabling the bottom
> half for the iothread since Anthony indicates we don't care about
> performance for the non-iothread case.
>
> New performance data against both qemu.git and qemu-kvm.git:
>
> https://spreadsheets.google.com/pub?key=0AoEm50Bac2U7dGdlREhrWUpPVEdMcTJaX0RjSEgtc3c&hl=en&single=true&gid=0&output=html
>
> This shows the base performance versus patched with new default for
> various packet sizes and netperf test loads. The guest is a 2-way
> SMP, connected directly to the host via a tap (no bridge). Thanks,
>
> Alex
ACK the series.
Please remember to clone bugzilla into libvirt and ask them
to support the new option on zstream/0day, so that we do have
a working backup plan.
> ---
>
> Alex Williamson (4):
> virtio-net: Introduce a new bottom half packet TX
> virtio-net: Rename tx_timer_active to tx_waiting
> virtio-net: Limit number of packets sent per TX flush
> virtio-net: Make tx_timer timeout configurable
>
>
> hw/s390-virtio-bus.c | 8 +++
> hw/s390-virtio-bus.h | 1
> hw/syborg_virtio.c | 8 +++
> hw/virtio-net.c | 129
> +++++++++++++++++++++++++++++++++++++++++---------
> hw/virtio-net.h | 14 +++++
> hw/virtio-pci.c | 8 +++
> hw/virtio.h | 4 +-
> 7 files changed, 144 insertions(+), 28 deletions(-)
- [Qemu-devel] [PATCH v2 0/4] virtio-net: More configurability and bh handling for tx, Alex Williamson, 2010/09/02
- [Qemu-devel] [PATCH v2 1/4] virtio-net: Make tx_timer timeout configurable, Alex Williamson, 2010/09/02
- [Qemu-devel] [PATCH v2 3/4] virtio-net: Rename tx_timer_active to tx_waiting, Alex Williamson, 2010/09/02
- [Qemu-devel] [PATCH v2 2/4] virtio-net: Limit number of packets sent per TX flush, Alex Williamson, 2010/09/02
- [Qemu-devel] [PATCH v2 4/4] virtio-net: Introduce a new bottom half packet TX, Alex Williamson, 2010/09/02
- [Qemu-devel] Re: [PATCH v2 0/4] virtio-net: More configurability and bh handling for tx,
Michael S. Tsirkin <=
- [Qemu-devel] Re: [PATCH v2 0/4] virtio-net: More configurability and bh handling for tx, Juan Quintela, 2010/09/03