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the profiling phase seems to succeed, but opreport shows no samples collected. The workaround is to use a non-root
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the profiling phase seems to succeed, but opreport shows no samples collected. The workaround is to use a non-root
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user account for profiling a single application, and use the root user account only for <tt>--system-wide</tt> profiling.
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user account for profiling a single application, and use the root user account only for <tt>--system-wide</tt> profiling.
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</em></blockquote>
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</em></blockquote>
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</p>
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</p>
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<h3>Why doesn't the summary sample count for some binary images match the number of individual symbols'
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samples for the same binary?</h3>
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<p>
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Usually, the total of all per-symbols samples for a given binary image
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equals the summary count for the binary image (shown by running
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opreport with no options).
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However, it's possible for some sample addresses to fall outside the range of
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any symbols for a given binary image.  In such cases, the total number of
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per-symbols samples for the binary image may be less than the summary count
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for the image. Running opreport with the <tt>--verbose=debug</tt> option
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will display an informational message when this difference is detected.
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This difference is typically very small and can be ignored.
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</p>
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<?php require("$top/end_page.php"); end_page("faq/"); ?>
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<?php require("$top/end_page.php"); end_page("faq/"); ?>