Performance problems with network and storage (tape) after upgrade from SuSE SLES 10 to RHEL 6.2

Solution Verified - Updated -

Issue

After performing the migration, performance is worse (even worse than a box with lower specs).

When under high load, the server crashes and gets hung. Several "blocked processes" start to appear.

Environment

  • Red Hat Enterprise Linux 6.2
  • TSM backup solution
  • Tape devices

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