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Is there a way to change the number of processors a program sees?

Is there any way I can trick a program into thinking the system has fewer processors? To explain: I am debugging a program that creates as many threads as it has processors, using ...
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Pacemaker: migrate resource without adding a “prefer” line in config

Using pacemaker in a 2 nodes master/slave configuration. In order to perform some tests, we want to switch the master role from node1 to node2, and vice-versa. For instance if the current master is ...
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Openvz resource management

I have a couple of nodes ( which are not mine ) running one openvz kernel version -2.6.32-042stab092.2 specifications : processor model name : E5-2620 0 @ 2.00GHz Number of Processors : 24 RAM : 48G ...
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Performance implications of enabling sadc to collect system activity information

I would like to enable sadc to collect system activity information so that I could use sar. What are the performance implications of enabling this? The server in question has very little system ...