On Fri, Aug 5, 2011 at 1:18 PM, Michael MacIsaac <mike...@us.ibm.com> wrote:
>> I would normally set the default to 600 seconds > We just moved from 5 minutes (SET SIGNAL SHUTDOWN 300) to 10 minutes (SET > SIGNAL SHUTDOWN 600) as some of our systems were not shutting down within 5 > minutes. Systems with high memory overcommit benefit from lowering LDUBUF. This makes the penguins leave in a more orderly fashion when they remain seated on the eligible list until there are sufficient resources to complete their exit. At one installation we actually did the evacuations by groups of servers rather than rush them all to the exit at the same time. Based on the monitor data you could even come up with the proper pacing. Another interesting approach is be to trigger drop_caches as part of the shutdown process and then inflate and deflate the CMM balloon according to the resources that it frees. I take donations from those with copious spare time ;-) Rob van der Heij Velocity Software http://www.velocitysoftware.com/
