Mark McLoughlin wrote:
Hey,
The main patch in this series is 5/6 - it just kills off the
virtio_net tx mitigation timer and does all the tx I/O in the
I/O thread.
Below are the results I got from benchmarking guest->host and
host->guest on my machine.
There's enough numbers there to make anyone blind, but basically
there are results for current kvm-userspace.git, with the
no-tx-timer patch applied and with the drop-the-mutex patch
applied.
Also, I've included results that show what difference some tuning
makes with all the patches applied. The tuning basically just
involves pinning the I/O thread and the netperf/netserver processes
in both the host and guest to two physical CPUs which share a L2
cache.
(Yes, the 1k buffer size results are weird - we think there's a bug
in recent kernels that causes us not to coalesce these small buffers
into a large GSO packet before sending)
Applied 1-2 while we debate the rest.
--
error compiling committee.c: too many arguments to function
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