On Mon, 22 Nov 2010 13:47:55 +0100, Michael Holzheu said: > Currently the cumulative time accounting in Linux is not complete. > Due to POSIX POSIX.1-2001, the CPU time of processes is not accounted > to the cumulative time of the parents, if the parents ignore SIGCHLD > or have set SA_NOCLDWAIT. This behaviour has the major drawback that > it is not possible to calculate all consumed CPU time of a system by > looking at the current tasks. CPU time can be lost. > > This patch adds a new sysctl "kernel.full_cdata" that allows to switch > between the POSIX behavior and complete cumulative accounting. > +unsigned int full_cdata_enabled = 1; This probably needs to default to "current kernel behavior" but allow sysadmins to change to the new behavior.
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