expire running dead slow

[Bill Davidsen]

anne wrote:
> The HT thought made me recall something:
> 
> Are your running a RAID?  We have seen 2 cases where Linux performed 
> signficantly better with software RAID control after disabling the 
> hardware RAID controller.  Unexpected, but true.  One these machines 
> was, like yours, a dual HT Xeon.  FWIW.

Given the nature of the load, and the proof that the other five machines 
are working okay, I suspect a configuration issue here. The disks is 
relatively unloaded, when you get to 8TB you can spread head motion 
nicely. And the IBM ServRAID controllers have been doing a good job for 
us for years, and in a total of 38 servers, so that's unlikely as an 
issue. Not to mention the problem of changing the format of the storage 
on a machine that size, taking a full feed.

I want to understand the problem better before I try a workaround. If I 
didn't have other working I would try something else, but I know I've 
done something wrong here.

-- 
    -bill davidsen (davidsen at tmr.com)
"The secret to procrastination is to put things off until the
  last possible moment - but no longer"  -me