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This patch introduces new commands for dynamically balancing RAM between subsystems. The 'status' command prints a table with the RAM status of each subsystem. The 'ram' command changes the quota or a quota limit of a given subsystem. The quota limit can be defined to allow the on-demand expansion of the quota. Finally, the 'yield' command can be used to instruct a subsystem to yield a specified amount of resources. For trying out the new commands, a so-called 'ram_eater' example has been added to the 'terminal_mux.run' scenario. This program simulates a subsystem with a growing demand for resources, yet with the capability to yield resources when instructed by the parent (i.e., cli_monitor). Besides implementing the new features, the patch splits the implementation of 'cli_monitor' into multiple files. |
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This is the example operating system based on the Genode OS framework: :_Init_: is the first real process in the system. The provided implementation uses a very simple XML parser to read its configuration files. :_Drivers_: The example OS has basic drivers for frame buffer, mouse and keyboard input, the PCI bus, the real-time clock, and system-specific timers. :_Server_: The only server in the example OS is Nitpicker, a minimal-complexity GUI server. :_Test_: are also part of the example OS. You may have a look at the fork bomb as a simple system stress test. :_Ldso_: is the dynamic linker used for loading executables that are linked against shared libraries. :_Lib_: contains libraries used by the components of the OS repository, in particular the device-driver kit, the alarm framework, and support for dynamic linking.