>
> > So did deleting do the trick?  I have been unable to find out what is
> > causing this for me (and there have been a bizarre variety, though not
> > huge number, of posts on this in the last month i.e. not all the same
> > OS or whatever).
>
> No, it didn't. I deleted my .sage/sage_notebook folder (well, moved it),
> so Sage created a new notebook, and now things are back to being almost
> instantaneous.

Hmm, that is EXACTLY the experience of my sysadmin with our server -
deleting old snapshots did precisely nothing, but starting a new
server with no users and their attendant notebooks seems to be
instantaneous.

Looking at Trac a bit, I see something weird.  It seems consistent
with the timing of the downgrade in performance of the notebook on
some machines that # 5291 was merged in 3.3.rc2, while # 5687 (and the
fix at # 5703) does almost exactly the same thing as # 5291 while
deleting # 5291's way of doing it.  The efficiency issue of # 5300 has
not been addressed.  Tickets # 5371 and # 5459 are also relevant but
would not necessarily be the immediate issue.

So here are some questions.

If someone starts a Sage process during an auto-save in a situation
with not tons of memory and/or CPU, is all hope lost for a quick
evaluation?
Could the additional user created in a server situation exacerbate
this problem by adding connection time by the server?
How long does open(worksheet_txt).read() take, anyway, for a given
text file, and how much processing power?
And why would getting rid of notebook files make a difference if only
the open worksheet(s) is (are) being auto-saved - is it somehow
possible that other worksheets are being at least looked at (though
not actually being updated since nothing has changed)?

I hope at least one of these is non-stupid and helps lead to a
resolution of this, but if not I certainly understand!

- kcrisman
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