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Substracting curr_y when determining the hight of the process chart is wrong because the height is independent of the position where the chart is about to be drawn. It happens to work at the moment because curr_y is always 10 when render_processes_chart() gets called. But it leads to a negative height when other charts are drawn above it, and then the grid gets drawn on top of those other charts. Substracting some constant is relevant because otherwise the box is slightly larger than the process bars. Not sure exactly where that comes from (text height?); leg_s seems a suitable constant and happens to be 10, so everything still gets rendered exactly as before. (From OE-Core rev: b6bb690728c329ae448f89a1b68298c6dd8a573a) Signed-off-by: Patrick Ohly <patrick.ohly@intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> |
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| pybootchartgui.py | ||
| README.pybootchart | ||
PYBOOTCHARTGUI ---------------- pybootchartgui is a tool (now included as part of bootchart2) for visualization and analysis of the GNU/Linux boot process. It renders the output of the boot-logger tool bootchart (see http://www.bootchart.org/) to either the screen or files of various formats. Bootchart collects information about the processes, their dependencies, and resource consumption during boot of a GNU/Linux system. The pybootchartgui tools visualizes the process tree and overall resource utilization. pybootchartgui is a port of the visualization part of bootchart from Java to Python and Cairo. Adapted from the bootchart-documentation: The CPU and disk statistics are used to render stacked area and line charts. The process information is used to create a Gantt chart showing process dependency, states and CPU usage. A typical boot sequence consists of several hundred processes. Since it is difficult to visualize such amount of data in a comprehensible way, tree pruning is utilized. Idle background processes and short-lived processes are removed. Similar processes running in parallel are also merged together. Finally, the performance and dependency charts are rendered as a single image to either the screen or in PNG, PDF or SVG format. To get help for pybootchartgui, run $ pybootchartgui --help This code was originally hosted at: http://code.google.com/p/pybootchartgui/