Hi Pavel,
On Tue, May 02, 2006 at 09:10:01PM +0200, Pavel Machek wrote:
> > SOC PROPOSAL
> >
> > Rapid linux desktop startup through pre-caching
>
> Looks nice me...
Thanks.
> > SCHEME/GOAL
> > 2) kernel module to query the file cache
> > - on loading: create /proc/filecache
> > - setting up: echo "param value" > /proc/filecache
> > - info query: cat /proc/filecache
> > - sample sessions:
> >
> > # modprobe filecache
> > $ cat /proc/filecache
> > # file ALL
> > # mask 0
> > #
> > # ino size cached status refcnt name
> > 0 2929846 3181 D 1 /dev/hda1
> > 81455 9 9 _ 1 /sbin/init
> > ......
> >
> > $ echo "file /dev/hda1" > /proc/filecache
> > $ cat /proc/filecache
> > # file /dev/hda1
> > # mask 0
> > #
> > # idx len
> > 0 24
> > 48 2
> > 53 5
> > ......
>
> Could we use this instead of blockdev freezing/big suspend image
> support? It should permit us to resume quickly (with small image), and
> then do readahead. ... that will give us usable machine quickly, still
> very responsive desktop after resume?
Sure. Indeed I have considered about the possibility to integrate my
work with the foresighted userland-swsusp idea. The added value of
this approach is that user-land tools can do all kinds of smart
processing of the contents, and present users with different policies.
Another imagined user of /proc/filecache is system adms :)
Wu
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