HP-UX 11i v3 Read Before Installing or Updating, February 2007 (Initial Release)

CPU Monopolized By evacd daemon During Tape
Archiving
The evacd daemon can monopolize the CPU on a small vPar
configured with floating/ejectable memory. On such a system
with a workload which exhausts the file cache, the workload may
run slower than expected. A backup to tape is one such workload.
Note that this problem does not affect non-vPars systems or
vPars systems configured only with base/non-ejectable memory.
What To Do
You can try any of the following:
• Reduce the tunable filecache_max from the default of 50
percent to 25 percent. If the problem still occurs, reduce the
tunable further.
• Remove the floating/ejectable memory from the vPar using
vparmodify before starting the operation that exhausts file
cache. The memory can be added back after the operation
that exhausts file cache completes.
• Install the patches PHKL_35899 and PHKL_35900. For
information on these patches, go to the HP IT Resource
Center Web site: http://itrc.hp.com