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| author |   Andres Salomon <dilinger@queued.net> | 2009-02-11 13:27:02 -0800 |
|---|---|---|
| committer |   David Woodhouse <David.Woodhouse@intel.com> | 2009-02-14 08:59:04 +0000 |
| commit | efab0b5d3eed6aa71f8e3233e4e11774eedc04dc (patch) | |
| tree | 79906754c394f0e2e081c150ea4494a3bde1b086 /lib/dma-debug.c | |
| parent | [MTD] [MAPS] blackfin async requires complex mappings (diff) | |
| download | linux-rng-efab0b5d3eed6aa71f8e3233e4e11774eedc04dc.tar.xz linux-rng-efab0b5d3eed6aa71f8e3233e4e11774eedc04dc.zip | |
[JFFS2] force the jffs2 GC daemon to behave a bit better
I've noticed some pretty poor behavior on OLPC machines after bootup, when
gdm/X are starting. The GCD monopolizes the scheduler (which in turns
means it gets to do more nand i/o), which results in processes taking much
much longer than they should to start.
As an example, on an OLPC machine going from OFW to a usable X (via
auto-login gdm) takes 2m 30s. The majority of this time is consumed by
the switch into graphical mode. With this patch, we cut a full 60s off of
bootup time. After bootup, things are much snappier as well.
Note that we have seen a CRC node error with this patch that causes the machine
to fail to boot, but we've also seen that problem without this patch.
Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'lib/dma-debug.c')
0 files changed, 0 insertions, 0 deletions