[SunRescue] solaris7 i/o tuning

[James Lockwood]

On Mon, 21 May 2001, James Lockwood wrote:

> Assuming you don't, I'd stick to generic tuning steps first.  Crank the
> UFS write throttle up to the moon to prevent synchronous commits from
> screwing up your flow.  Mount the partition in question with either
> noatime or dfratime to help with the same issues.  This should easily let
> the DB return from write ops with near zero service times and do
> write-behind as long as the data backlog stays below the high water mark.

Almost forgot: consider using Casper Dik's "fastfs" utility on your DB
partition.  Since metadata is totally unimportant on MySQL DB files,
there's no reason any meta updates have to be synchronous.  This will be
faster than using ufs+ or Disksuite logging.

-James