MAME coreup - Enable all CPU core coredown - Disable all but one CPU core SYNPOSIS coreup [count] coredown [count] DESCRIPTION The coreup utility enables all CPU cores on the machine. The coredown utility disables all CPU cores on the machine expect the CPU 0. This is designed as a workaround for virtual machines that have input performance issues (keyboard input lag and keys getting stuck) when more than one CPU core is online. OPTIONS No options are supported. OPERANDS The following operand is supported: count Enable the first count CPU cores and disable the rest. EXIT STATUS If the coreup and coredown utility fails it will exit with one of the following statuses: 0 Successful completion. 1 An error occurred. NOTES The is no difference between the coreup(1) and coredown(1) utilities when the count operand is specified. SEE ALSO None.