[kdepim-users] Excessive CPU use from virtuoso-t

[Russ Kepler]

On Tuesday, November 13, 2012 11:38:46 AM Russ Kepler wrote:
> On Tuesday, November 13, 2012 07:41:43 PM O. Sinclair wrote:
> > if if is IMAP I do not have much experience but when I have had bad
> > hickups I have normally resorted to
> > akonadictl stop
> > rename .kde/share/apps/nepomuk folder to something like nepomuk.old
> > akonadictl start
> 
> It seems to be running again, but not really rebuilding the database very
> quickly.  I recall some setting somewhere that would encourage it to
> recreate indexes a bit faster?

I may have found the virtuoso-t CPU usage problem: it appears to be related to 
updating a 'saved' search.  When checking the indexing completion I used a 
search of all my emails (about 2GB, I think) using 2 words both in the 
'mesasage body".  For the last 3 days my email has been essentially unusable - 
if I chose a email folder it would wait some 10 minutes before displaying the 
body of a message and after 2-3 messages it would pause again.  Yesterday I 
though about things and today decided to see what would happen if I deleted 
the saved search, since doing so virtuoso-t time only appears when deleting 
and moving messages and nothing has happened to stop mail access (good thing, 
too, as I had several hundred emails that needed handling).

So the behaviour may be a function of how I'm doing things or the emails that 
I receive.  I have a lot of mail at 100K messages and maybe 2GB, I receive a 
lot of 1MB video files and I tend to move them to a temporary folder after 
looking at them.  So - a large database, moving 1MB messages instead of 
deleting them and a saved 'complex' search - resulting in lots and lots of 
processing in virtuoso-t.  What doesn't make sense is the mysql write activity 
at the same time.
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