[Bug translator/3217] compiled binary tracing

[Bug translator/3217] compiled binary tracing

[dsmith at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=3217

David Smith <dsmith at redhat dot com> changed:

           What    |Removed                     |Added
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         AssignedTo|dsmith at redhat dot com    |systemtap at sourceware dot
                   |                            |org

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[Bug translator/3217] compiled binary tracing

[jistone at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=3217

Josh Stone <jistone at redhat dot com> changed:

           What    |Removed                     |Added
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   Attachment #1977|0                           |1
        is obsolete|                            |
         AssignedTo|systemtap at sourceware dot |jistone at redhat dot com
                   |org                         |

--- Comment #8 from Josh Stone <jistone at redhat dot com> 2011-06-08 00:17:46 UTC ---
Created attachment 5771
  --> http://sourceware.org/bugzilla/attachment.cgi?id=5771
Full-featured compiled printf

This translates script-level printf statements into unrolled printing
statements.  This passes all systemtap.printf/*.exp tests.  The compiled code
is faster, variably, but up to 20% improved in my testing.  It also results in
larger .text though, especially when it gets fanned out for something like
"syscall.*".  That might be mitigated by moving this translation to create
functions in pass-2, so identical printfs can share the unrolled code.

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[Bug translator/3217] compiled binary tracing

[hunt at redhat dot com]

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                 CC|                            |hunt at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=3217

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[Bug translator/3217] compiled binary tracing

[hunt at redhat dot com]

------- Additional Comments From hunt at redhat dot com  2006-09-19 14:57 -------
All the pieces are in place to do this. See _stp_reserve_bytes and
_stp_print_binary in runtime/print.c. 

This will save  < 100ns on a 3GHz Pentium when printing 5 binary numbers. So I
consider it a minor enhancement. For optimization with more potential impact,
see BZ 2339.



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           What    |Removed                     |Added
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           Severity|normal                      |enhancement
           Priority|P2                          |P3


http://sourceware.org/bugzilla/show_bug.cgi?id=3217

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