* [Bug tapsets/4727] New: Userspace stack traceback
@ 2007-07-03 13:51 wcohen at redhat dot com
2008-06-11 16:07 ` [Bug tapsets/4727] " wcohen at redhat dot com
2008-09-30 20:10 ` fche at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: wcohen at redhat dot com @ 2007-07-03 13:51 UTC (permalink / raw)
To: systemtap
For application tuning it would be very useful to have a traceback of the
user-space stack to determine how a particular systemcall is being invoked. The
application in mind would be for looking at lock contention issues. The futext
example on the wiki points out which futexes have problems:
http://sourceware.org/systemtap/wiki/WSFutexContention
However, it doesn't show where in the code those are being triggered. The stack
backtrace of the user process would give developer some idea whether to look in
the code.
--
Summary: Userspace stack traceback
Product: systemtap
Version: unspecified
Status: NEW
Severity: enhancement
Priority: P2
Component: tapsets
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: wcohen at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=4727
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* [Bug tapsets/4727] Userspace stack traceback
2007-07-03 13:51 [Bug tapsets/4727] New: Userspace stack traceback wcohen at redhat dot com
@ 2008-06-11 16:07 ` wcohen at redhat dot com
2008-09-30 20:10 ` fche at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: wcohen at redhat dot com @ 2008-06-11 16:07 UTC (permalink / raw)
To: systemtap
------- Additional Comments From wcohen at redhat dot com 2008-06-11 15:01 -------
The gno-profile-wustk2.stp at http://live.gnome.org/GnomePerformance/SystemTap
does a userspace backtrace based on a mechanism from oprofile. Mechanism in
ustack_print function looks like it needs frame pointers to work and
architecture specific to i386
--
http://sourceware.org/bugzilla/show_bug.cgi?id=4727
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* [Bug tapsets/4727] Userspace stack traceback
2007-07-03 13:51 [Bug tapsets/4727] New: Userspace stack traceback wcohen at redhat dot com
2008-06-11 16:07 ` [Bug tapsets/4727] " wcohen at redhat dot com
@ 2008-09-30 20:10 ` fche at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: fche at redhat dot com @ 2008-09-30 20:10 UTC (permalink / raw)
To: systemtap
------- Additional Comments From fche at redhat dot com 2008-09-30 20:09 -------
*** This bug has been marked as a duplicate of 5635 ***
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |DUPLICATE
http://sourceware.org/bugzilla/show_bug.cgi?id=4727
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end of thread, other threads:[~2008-09-30 20:10 UTC | newest]
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2007-07-03 13:51 [Bug tapsets/4727] New: Userspace stack traceback wcohen at redhat dot com
2008-06-11 16:07 ` [Bug tapsets/4727] " wcohen at redhat dot com
2008-09-30 20:10 ` fche at redhat dot com
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