couchdb performace 10x: using NIF for file io
neville.burnell at gmail.com
Sun Oct 24 17:54:51 EDT 2010
erlang groups link:
On 25 October 2010 08:05, NevB <neville.burnell at gmail.com> wrote:
> I came across this thread in the Erlang group and thought the Riak
> team might find it interesting.
> Please forgive me if its not relevant to Riak
> Kind Regards
> ---------- Forwarded message ----------
> From: Joel Reymont <joe... at gmail.com>
> Date: Oct 25, 12:56 am
> Subject: couchdb performace 10x: using NIF for file io
> To: Erlang Programming
> Simply switching to NIFs for file IO seems to have improved CouchDB
> write performance more than ten-fold.
> Compare the old graph
> to the new graph
> I was under the impression that the Erlang IO subsystem was highly
> optimized but there seems to be no limit to perfection.
> NIFs are a giant black hole that will subsume Erlang code as
> performance has to be improved. Start at the lowest level and keep
> moving up. All that will be left of Erlang in the end is 99.99999%
> uptime, fault tolerance and supervision... of optimized C code. It's
> swell and I'm all for it!
> Patch is here:
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