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intel_gpu_top: initialize monitoring statistics at startup

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This patch initializes the last_stats[] for registers prior to starting
the monitoring itself. This way, the first measure will already contain
the difference from the previous value instead of non-initialized value.

Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
This commit is contained in:
Eugeni Dodonov
2011-09-05 16:33:04 -03:00
parent 4b0a15e45d
commit 431fe7803d
2 changed files with 188 additions and 39 deletions
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man/intel_gpu_top.1
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@@ -16,8 +16,21 @@ privilege to map the graphics device.
.B -s [samples per second]
number of samples to acquire per second
.TP
.B -o [output file]
run non-interactively and collect usage statistics to [file]
.TP
.B -e ["command to profile"]
execute a command, and leave when it is finished. Note that the entire command
with all parameters should be included as one parameter.
.TP
.B -h
show usage notes
.SH EXAMPLES
.TP
intel_gpu_top -o "cairo-trace-gvim.log" -s 100 -e "cairo-perf-trace /tmp/gvim"
will run cairo-perf-trace with /tmp/gvim trace, non-interactively, saving the
statistics into cairo-trace-gvim.log file, and collecting 100 samples per
second.
.PP
Note that idle units are not
displayed, so an entirely idle GPU will only display the ring status and