On Tue, 2010-01-05 at 09:48 -0600, Paul Hartman wrote:
> 2010/1/5 Kimmo Hämäläinen <kimmo.hamalai...@nokia.com>:
> > Hi,
> >
> > On Sun, 2009-12-27 at 22:38 +0100, ext Paul Hartman wrote:
> >> Hi,
> >>
> >> I'm using linux kernel 2.6.32 on my PC and mount N900 in mass storage
> >> mode using vfat (async).
> >>
> >> If I write one file then sync/umount, write speed is about 17MB/sec,
> >> same as I get on Windows Vista. However, if I write more than one file
> >> and then sync/umount, speed is terrible, around 2MB/sec (and in kernel
> >> 2.6.31 that speed was about 450kb/sec using the old pdflush code). So
> >> it seems linux is maybe creating multiple write streams and N900
> >> doesn't deal with that well at all.
> >
> > There has been some USB speed-ups since the sales release, but I'm not
> > sure if they fix this multiple file copying problem. I think it's best
> > to file a bug to maemo.org, so Maemo kernel guys get the word (I think
> > too few of them read this mailing list).
>
> Done. Will also post to LKML in case it's a general problem with linux
> i/o scheduler on the PC side.
>
> https://bugs.maemo.org/show_bug.cgi?id=7677
I don't think LKML will appreciate debugging a problem in a kernel with
closed-source components.
Xav
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