performance limitations of linux raid

[bug1]

Hi, im just wondering has anyone really explored the performance
limitations of linux raid ?

Recognising ones limitations is the first step to overcomming them.

Ive found that relative performance increases are better with less
drives.

Ive been using raid for a year or so, ive never managed to get a 4-way
ide raid working efficiently (no timeouts), 2.3.99pre6pre5 is the best
ive had though.

Anyone have any thoughts on where the bottleneck is, or orther
experiences with raid limitations ?


Glenn McGrath