On 08-May-01 Edwin L. Culp wrote:
> A couple of days ago, I installed current on a Dell that had been an
> NT server. Everything works fine except is seems very slow. A make
> world on current takes over 5 hours. A little more than my old K6-2
> 300 laptop.
> This is the first SMP kernel I have used but I have disabled it with no
> noticable difference in speed.
> I'm sure that I am missing something very basic. I have attached my dmesg
> and would appreciate any suggestions as to a starting point to speed it up.
-current has lots of debugging on by default. The witness code especially is
rather slow. However, it is helpful in finding bugs. You can try disabling
witness by building a custom kernel or setting the loader tunable
debug.witness_watch to 0. If you really need performance, you may want to run
stable instead of current anyways.
John Baldwin <[EMAIL PROTECTED]> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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