[Cerowrt-devel] Ubiquiti QOS

David P. Reed dpreed at reed.com
Thu May 29 20:32:04 EDT 2014

Good points...

On May 29, 2014, Michael Richardson <mcr at sandelman.ca> wrote:
>David P. Reed <dpreed at reed.com> wrote:
>> ECN-style signaling has the right properties ... just like TTL it can
>    > provide
>How would you send these signals?
>> A Bloom style filter can remember flow statistics for both of these
>    > policies. A great use for the memory no longer misapplied to
>    > buffering....
>On the higher speed dataflow equipment, the buffer is general purpose
>so reuse like this is particularly possible.
>On routers built around general purpose architectures, the limiting
>in performance is often memory throughput; adding memory rarely
>total throughput.   Packet I/O is generally quiet sequential and so
>good use of wide memory data paths and multiple accesses per address
>Updating of tables such as Bloom filter or any other hash has a big
>due to the RMW and random access nature.
>All I'm saying is that quantity of memory is seldom the problem, but
>to it, is.
>I do like the entire idea; it seems that it has to be implemented at
>places where the flow converge, which is often in the DSL line card, or
>]               Never tell me the odds!                 | ipv6 mesh
>networks [
>]   Michael Richardson, Sandelman Software Works        | network
>architect  [
>]     mcr at sandelman.ca  http://www.sandelman.ca/        |   ruby on
>rails    [

-- Sent from my Android device with K-@ Mail. Please excuse my brevity.
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