Heads-up: new parallel I/O manager merged
marlowsd at gmail.com
Tue Feb 12 11:56:29 CET 2013
Seconded. Well done guys.
On 12/02/13 08:46, Simon Peyton-Jones wrote:
> Andreas, Kazu, Johan
> That is a truly monumental sequence of patches! Thank you all for
> working so hard on making GHC better.
> Better together! Onward and upward.
> *From:*ghc-devs-bounces at haskell.org
> [mailto:ghc-devs-bounces at haskell.org] *On Behalf Of *Johan Tibell
> *Sent:* 12 February 2013 07:03
> *To:* ghc-devs at haskell.org
> *Cc:* Kazu Yamamoto (山本和彦); Andreas Voellmy
> *Subject:* Heads-up: new parallel I/O manager merged
> I've merged the new parallel I/O manager that Andreas Voellmy and Kazu
> Yamamoto have been working on. The new parallel I/O manager scales much
> better than the current one*: the number of requests per second scales
> almost linearly up to 32 cores I believe. Perhaps Andreas could post the
> If you see any bugs that you think are related to the new I/O manager,
> please let Andreas and Kazu know.
> * The current one (which replaced an even earlier one) scaled well in
> the number of open file descriptors and performed better than the I/O
> manager it replaced, but it didn't scale well to multiple cores.
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