Final tally:
before this change, a particular stress test:
real 0m48.731s
real 0m54.434s
after this change, the same test:
real 0m3.231s
real 0m2.976s
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@4675 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd