[CentOS] load level?

  > Where do I get iostat / iotop?
> 
> 
> Starting sendmail back up puts me in the high 1's to low 2's
> 
My next course of action would be to start sendmail in debug level 0.1 
and check some logs. Find out exactly sendmail is trying to do, maybe 
lsof to see if it is getting stuck on something. I am pretty certain 
(from the information provided) that its IO that is bringing your system 
to its knees. iotop is available on pbone.net and as for iostat # yum 
install sysstat. But I think you really you have found your problem child.