bugGNU Help Wanted - Bugs: bug #19992, very useful enhancement to gprof

 
 

bug #19992: very useful enhancement to gprof

Submitter:  None
Submitted:  Mon 28 May 2007 04:54:54 PM UTC
   
 
Category:  None Severity:  3 - Normal
Item Group:  None Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open
* Mandatory Fields

Add a New Comment Rich Markup
   

Mon 28 May 2007 04:54:54 PM UTC, original submission:  

I understand gprof can, on the timer interrupt, sample the call stack as well as the program counter.

Would it be possible to have it report the fraction of time individual statements (as opposed to functions) are found on the call stack?

Example: "call main()" should be on 100% of call stack samples.

Example: if "file foo.c, line 101: call bar()" is on 50% of call stack samples, it is worth looking at that line to see if it could be replaced, for a factor of 2 speedup.

I don't think you can get this information from any of gprof's current output options.

See also:
http://en.wikipedia.org/wiki/Performance_analysis#Simple_manual_technique

http://en.wikipedia.org/wiki/Talk:Performance_analysis#Monte_Carlo_Profiler.3F

Thanks,
Mike Dunlavey
-email is unavailable-

Anonymous

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:
   
   
Comment:
   

No files currently attached

 

Depends on the following items: None found

Items that depend on this one: None found

 

CC list is empty

 

There are 0 votes so far. Votes easily highlight which items people would like to see resolved in priority, independently of the priority of the item set by tracker managers.

Only logged-in users can vote.

 

No changes have been made to this item

Back to the top

Powered by Savane 3.14-f13d.
Corresponding source code