diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/bootchart/README | 83 | ||||
| -rw-r--r-- | src/bootchart/bootchart.c | 11 |
2 files changed, 11 insertions, 83 deletions
diff --git a/src/bootchart/README b/src/bootchart/README deleted file mode 100644 index 03b0fe95ee..0000000000 --- a/src/bootchart/README +++ /dev/null @@ -1,83 +0,0 @@ - -Bootchart - a 'startup' graphing tool - --- - -Bootchart is a tool, usually run at system startup, that collects and graphs -the CPU and disk load of the system as it works. The output of bootchart is -an SVG graph. Normally, bootchart is invoked as `bootchartd` by the kernel -by passing "init=/sbin/bootchartd" to the kernel. Bootchart will then fork -init off to resume normal system startup, while monitoring and logging -startup information in the background. - -After collecting a certain amount of data (usually 15-30 seconds) the logging -stops and a graph is generated from the logged information. This graph -contains vital clues to which resources are being used, in which order, and -where possible problems exist in the startup sequence of the system. - -Of course, bootchart can also be used at any moment in time to collect and -graph some data for an amount of time. Bootchart does not even require root -privileges to do so, and will happily run as a normal user. Bootchart graphs -are by default written time-stamped in /run/log. - --- - -This version of bootchart was implemented from scratch and inspired by former -incantations of bootchart: - -- The original bash/shell code implemented bootchart. This version logged all -data into a compressed tarball for later processing, and did not create a graph -on it's own. - -- The C-code implementation found in Ubuntu. This version replaced above shell -code version with a faster and efficient data logger, but still did not graph -code itself. - -- the original Java-based bootchart, the original graphing program that created -a bootchart graph from logged data. - -- the pybootchartgui.py program, which created a graph based on the data logged -by either standalone data logger. - -The version you are looking at combines these 2 parts into a single program, -which makes running it and creating graphs a bit more efficient and simple. -You can now run a single program at startup instead of 2. There are no timing -problems (the graphing stage will never run if the logging stage didn't -finish). The logged data isn't being written to disc first, then read again. -Also, the data kept in memory is reduced to the absolute minimum needed to -keep memory use low. - --- - -Requirements: glibc. Your kernel must have procfs support and several -proc output options enabled: - CONFIG_PROC_FS - CONFIG_SCHEDSTATS - CONFIG_SCHED_DEBUG -at a minimum. bootchartd itself does not require any graphics library -to generate the SVG output file. - --- - -Configuration: please see bootchartd --help, as well as /etc/bootchartd.conf -and/or /usr/share/doc/bootchart/bootchartd.conf.example for a list of -configurable options. - --- - -Many thanks to those who contributed ideas and code: - - Ziga Mahkovec - Original bootchart author - - Anders Norgaard - PyBootchartgui - - Michael Meeks - bootchart2 - - Scott James Remnant - Ubuntu C-based logger - - Arjan van der Ven - for the idea to merge bootgraph.pl functionality - --- - -For bugs, please contact the author or current maintainer: -Auke Kok <auke-jan.h.kok@intel.com> - --- - -Download bootchart releases here: http://foo-projects.org/~sofar/bootchart/ -Source code is hosted here: git://github.com/sofar/bootchart diff --git a/src/bootchart/bootchart.c b/src/bootchart/bootchart.c index 0c4d3e3432..017632781a 100644 --- a/src/bootchart/bootchart.c +++ b/src/bootchart/bootchart.c @@ -20,6 +20,17 @@ along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ +/*** + + Many thanks to those who contributed ideas and code: + - Ziga Mahkovec - Original bootchart author + - Anders Norgaard - PyBootchartgui + - Michael Meeks - bootchart2 + - Scott James Remnant - Ubuntu C-based logger + - Arjan van der Ven - for the idea to merge bootgraph.pl functionality + + ***/ + #include <sys/time.h> #include <sys/types.h> #include <sys/resource.h> |