sudog@sudog.com writes:
> 
> hello folks--so as my final bit I'd like to know if there are any
> other suggestions for pulling up the performance on my
> tens-of-millions-of-hits-a-day NetBSD servers..  Here's what I've got
> so far:
> 
> 1. basic kernel tuning NKMEMPAGES, NMBCLUSTERS, etc based on avail ram
> 2. put most-accessed stuff on non-RAID partitions

If there are major performance problems with RAIDframe, I want to hear 
about them...  Putting data on even a RAID 1 set should result in writes 
nearly as fast as the underlying media, and for many reads, faster reads
than any of the underlying media could provide on their own...  
(RAID 5 has it's own problems with "small writes", but that can sometimes 
be overcome with appropriate RAID and filesystem tuning...  of course a lot
of this depends on the filesystem workload, but I certainly don't agree with
your claim that "most-accessed stuff should be on non-RAID partitions"
in the general case...)

Later...

Greg Oster