Disk IO issues

[Corey Chandler]

Mike McGrath wrote:
> Lets pool some knowledge together because at this point, I'm missing
> something.
>
> I've been doing all measurements with sar as bonnie, etc, causes builds to
> timeout.
>
> Problem: We're seeing slower then normal disk IO.  At least I think we
> are.  This is a PERC5/E and MD1000 array.
>   

1. Are we sure the array hasn't lost a drive?
2. What's your scheduler set to?  CFQ tends to not work in many 
applications where the deadline scheduler works better...


-- Corey "Jay" Chandler