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SubjectRe: Nigel's current for-rafael queue

On 03/08/10 16:55, Pavel Machek wrote:
> On Wed 2010-06-02 22:18:59, Nigel Cunningham wrote:
>> Hi all.
>> Here is my current patch queue.
>> Taken together, the patches implement the separation of low level
>> block i/o into a separate file, switch from using swap_map_pages
>> to extents stores prior to the 'header' page and implement fully
>> asynchronous (rather than batched I/O). I have only run it under
>> VMware so far, but would estimate a doubling in speed due to the
>> async i/o.
> Do you have any numbers from real hw? Could similar speedup be
> accomplished by just increasing the batch size?

Yeah. I've been thinking I should really prepend a patch that lets you
get the stats post-resume - unless you guys have some trick to enable
you to read them that I haven't noticed yet :)


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