Re: ceph performance call: buffer

[Loic Dachary <loic@dachary.org>]

[-- Attachment #1: Type: text/plain, Size: 1299 bytes --]

Hi Matt,

You will probably be interested in


On 16/10/2014 11:00, Matt W. Benjamin wrote:
> Hi Folks,
> 
> Per yesterday's Ceph performance call, we've pushed 2 wip branches for review and feedback to https://github.com/linuxbox2/linuxbox-ceph.git .
> 
> 1. xio-v084-inline reorganizes ceph::buffer as a namespace, and (nearly) all of
> buffer::hash, buffer::ptr and buffer::list as inline
> 
> 2. xio-v084-inline-flat restores some raw encapsulation lost in the prior change,
> then refactors buffer::raw to remove virtual methods
> 
> We've made some effort to measure the impact of the changes, but don't have
> reliable data yet.  (It's possible that our initial impression of improvement from the inlining change was not accurate, but more likely we need better workload tests.)
> 
> In addition, we've been working on an experiment to refactor buffer::ptr and buffer::raw to use boost::intrusive::list, to unify the interfaces of the two types to permit interning buffer::raw directly on the containing list when there is no sharing, and a slab allocator for both types.  We plan to push a wip branch with these changes to when they've stabilized a bit more and/or we have real perf numbers.
> 
> Thanks,
> 
> Matt
> 

-- 
Loïc Dachary, Artisan Logiciel Libre


[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 263 bytes --]