vfscount.py: add args time #2344
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[buildbot, test this please] |
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I have updated them. @yonghong-song |
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[buildbot, test this please] |
brendangregg
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May 23, 2019
add args time for vfscount.py
palexster
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Jul 7, 2019
add args time for vfscount.py
jeromemarchand
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Aug 5, 2019
Since commit a2e71a9 ("vfscount.py: add args time (iovisor#2344)"), vfscount does not show any output when it is interrupted by a key press, which is the only way out when no time limit is specified. I assume the exit() that has been added in the keyboard interrupt handler is there so that no output is displayed when the program has been interrupted early when a time limit has been specified. But since the tool still invite the user to use Ctrl-C to end the tracing in that case, it seems more consistent to show an output in that case too. This patch removes the exit() and the tools always show a result at the end. It also adds the duration argument to the synopsis and the option section in the man page.
yonghong-song
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Aug 5, 2019
Since commit a2e71a9 ("vfscount.py: add args time (#2344)"), vfscount does not show any output when it is interrupted by a key press, which is the only way out when no time limit is specified. I assume the exit() that has been added in the keyboard interrupt handler is there so that no output is displayed when the program has been interrupted early when a time limit has been specified. But since the tool still invite the user to use Ctrl-C to end the tracing in that case, it seems more consistent to show an output in that case too. This patch removes the exit() and the tools always show a result at the end. It also adds the duration argument to the synopsis and the option section in the man page.
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Just like vfsstat.py. I think the args time is good for us to analysis.If we need to know the number of vfs call during a period of time, the previous implement can't tell the details.