Date: Thu, 13 Dec 2001 21:50:44 -0800 (PST) From: Kirk McKusick <mckusick@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern subr_disklabel.c Message-ID: <200112140550.fBE5oiD51625@freefall.freebsd.org>
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mckusick 2001/12/13 21:50:44 PST
Modified files:
sys/kern subr_disklabel.c
Log:
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.
Revision Changes Path
1.60 +25 -0 src/sys/kern/subr_disklabel.c
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