[Devel] Re: IO controller Mini-Summit 2009
Ryo Tsuruta
ryov at valinux.co.jp
Sun Sep 13 18:41:11 PDT 2009
Hi Dhaval,
Dhaval Giani <dhaval at linux.vnet.ibm.com> wrote:
> On Wed, Aug 26, 2009 at 08:32:51PM +0900, Ryo Tsuruta wrote:
> > Hi All,
> >
> > As I have notified before, The 1st Linux IO controller Mini-Summit
> > will be held in Tokyo Japan on Oct 17 -- day before the 9th Linux
> > kernel summit. So I would like to propose the following topics for
> > the mini-summit and discuss about them.
> >
> > - Multiple IO controller development projects
> > - There are two activities for the development of IO controller,
> > Vivek's io-controller and dm-ioband. Do we have to pick one of
> > them to put into the mainline? How to advance the development?
> >
> > - Extensions of struct bio
> > - Make a bio point to the io_context of a process which creates the
> > I/O request. This allows to pass the IO scheduling class and
> > priority information to IO controller even if the IO is submitted
> > by another process which does not create the request, such as a
> > worker thread.
> > - Add a new flag to struct bio to identify the bio as urgent. This
> > gives IO controller a chance to handle the bio as high priority.
> > This flag should be set if the bio is created for the page-out
> > operation.
> >
> > - I/O tracking and charging policy
> > - Which process, a page-requesting process or a page-returning
> > process, should be charged for the I/O caused by page reclaim?
> > We should consider two cases where the IO flushes anonymous pages
> > and file mapped pages.
> >
> > I think this is a good opportunity to meet face-to-face to discuss
> > about IO controller development. I would like to many developers to
> > join this mini-summit. Please visit the following URL for more
> > information about the mini-summit.
> > http://apps.sourceforge.net/trac/ioband/wiki/iosummit
> > If you would like to join the mini-summit, please e-mail to me or post
> > on the wiki page,
> > (You need an account on SourceForge.net to edit the wiki page.)
> >
> > All comments, questions, suggestions and anything else are appreciated.
> >
>
> Hi Ryo,
>
> Would you be having a remote dial-in for folks who cannot attend in
> person?
Yes. I will provide a conference call and let you know the dial number
if you would join the summit.
Thanks,
Ryo Tsuruta
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