Hi, all:
I am trying to improve the performance of netfront/netback, and I found
that there were some discussion about PV network performance improvement in
devel mailing list ([1]). The proposals mentioned in [1] are helpful, such as
multipage ring, multiqueue, etc, and some of them have already merged into
upstream.
However, I am wondering if we have already used multipage ring, why
"seperate request and response ring" listed in [1] is also helpful for
performance improvement? I have read the implementation of vmxnet3 driver, it
does have separated request and response rings, but I can not understand what
the advantage of this method is.
Thanks.
[1] http://lists.xen.org/archives/html/xen-devel/2013-05/msg01904.html
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Best Regards
Lui
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