On Thu, 11 Feb 2016, Dave Täht wrote:
Someone asked me recently what I thought of the dpdk. I said:
"It's a great way to heat datacenters". Still, there's momentum it
seems, to move more stuff into userspace.
Especially now that Intel CPUs seem to be able to push a lot of PPS
compared to what they could before. A lot more.
What one has to take into account is that this tech is most likely going
to be deployed on servers with 10GE NICs or even 25/40/100GE, and they are
most likely going to be connected to a small buffer datacenter switch
which will do FIFO on extremely small shared buffer memory (we're talking
small fractions of a millisecond of buffer at 10GE speed), and usually
lots of these servers will be behind oversubscribed interconnect links
between switches.
A completely different use case would of course be if someone started to
create midrange enterprise routers with 1GE/10GE ports using this
technology, then it would of course make a lot of sense to have proper
AQM. I have no idea what kind of performance one can expect out of a low
power Intel CPU that might fit into one of these...
--
Mikael Abrahamsson email: [email protected]
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