On May 29, 2012, at 00:41 , Jonathan Bober wrote:

> see http://trac.sagemath.org/sage_trac/ticket/13057
> 
> This seems to be a bad regression. On reasonable machines it can take
> 5 seconds to get the docstring of an object by using '?'. Does anyone
> have any idea what happened? I don't see any changes to
> sage/misc/sagedoc.py or sage/misc/sageinspect.py in the last few
> months that seem like they would cause this.

I'm not sure what the cause is, but I do see this.  On my 2.93 GHz Dual 6-core 
Xeon system, I started each of the following versions from scratch, and ran 
"gcd?", with the indicated times

4.7.2: ~1 second
4.8: ~2-3 seconds
5.0: ~6-7 seconds

There was nothing else going on at the time (except a "doc build" of 5.1b1, 
which is hardly a cpu/disk hog).

Note that, for some reason, just doing "gcd?" launches GAP in the background, 
which may account for some of the delay; since GAP is launched in each case 
above, that only makes sense if something has changed in the Sage/GAP 
interaction (or in GAP itself, but each of the above uses 4.4.12.p6, so, ...).

Justin

--
Justin C. Walker, Curmudgeon at Large
Institute for the Absorption of Federal Funds
-----------
I'm beginning to like the cut of his jibberish.
-----------



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