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| author | Kirk McKusick <mckusick@FreeBSD.org> | 2001-12-14 05:50:44 +0000 |
|---|---|---|
| committer | Kirk McKusick <mckusick@FreeBSD.org> | 2001-12-14 05:50:44 +0000 |
| commit | d8bddaa85dc46872465ad1b9eb4d663407a24bfb (patch) | |
| tree | f5ed75c19ebd930bd74e0e630f5a2db47e7dfc5b /sys/dev/sf | |
| parent | 05463bb58d35a7331577f6e1d1262c0242e2c63c (diff) | |
| download | src-d8bddaa85dc46872465ad1b9eb4d663407a24bfb.tar.gz src-d8bddaa85dc46872465ad1b9eb4d663407a24bfb.zip | |
Add disk I/O scheduling for positively niced processes.
When a positively niced process requests a disk I/O, make
it wait for its nice value of ticks before scheduling its
I/O request if there are any other processes with I/O
requests in the disk queue. For all the gory details, see
the ``Running fsck in the Background'' paper in the Usenix
BSDCon 2002 Conference Proceedings, pages 55-64.
Notes
Notes:
svn path=/head/; revision=87845
Diffstat (limited to 'sys/dev/sf')
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