Phoronix Benchmarks: Waht's wrong with FreeBSD 8.0?
ivoras at freebsd.org
Mon Nov 30 14:50:06 UTC 2009
Robert Huff wrote:
> Bill Moran writes:
>> It's common knowledge that the default value for vfs.read_max is
>> non- optimal for most hardware and that significant performance
>> improvements can be made in most cases by raising it.
> Documentation/discussion where?
There is no documentation except for the sysctl documentation itself:
"vfs.read_max: Cluster read-ahead max block count" but it depends on the
load - it helps sequential reads, will probably do nothing for other
kinds of loads. It is also UFS-only.
More information about the freebsd-questions