Date: Thu, 30 Oct 2003 23:25:06 -0800 (PST) From: Don Lewis <truckman@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/ufs/ffs ffs_alloc.c Message-ID: <200310310725.h9V7P61p031317@repoman.freebsd.org>
next in thread | raw e-mail | index | archive | help
truckman 2003/10/30 23:25:06 PST
FreeBSD src repository
Modified files:
sys/ufs/ffs ffs_alloc.c
Log:
Tweak the calculation of minbfree in ffs_dirpref() so that only
those cylinder groups that have at least 75% of the average free
space per cylinder group for that file system are considered as
candidates for the creation of a new directory. The previous formula
for minbfree would set it to zero if the file system was more than
75% full, which allowed cylinder groups with no free space at all
to be chosen as candidates for directory creation, which resulted
in an expensive search for free blocks for each file that was
subsequently created in that directory.
Modify the calculation of minifree in the same way.
Decrease maxcontigdirs as the file system fills to decrease the
likelyhood that a cluster of directories will overflow the available
space in a cylinder group.
Reviewed by: mckusick
Tested by: kmarx@vicor.com
MFC after: 2 weeks
Revision Changes Path
1.116 +7 -7 src/sys/ufs/ffs/ffs_alloc.c
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200310310725.h9V7P61p031317>