Re: [libreoffice-users] Libreoffice multiple cores - problem

On Sun, 2013-05-26 at 12:40 +0400, Rinat Camalov wrote:
> I use libreoffice over 1 year, but now I have one problem.
> Libreoffice is uses only one core from CPU, even if i have 6 cores it
> uses only one. On my laptop it slows down documents opening,
> especially *.ods documents.
> How can i make him use all CPU cores?

I believe the use of only one core is 'normal',  Open/LibreOffice
appears to be a single process/thread.  I use an 8-core i7 workstation
[openSUSE 12.3/GNOME3.8] and opening my primary ODM [OpenOffice Master
Document] pegs one core briefly at 100% while the other cores take the
stray maintenance tasks [like zeitgeist,etc.. that get pinged whenever
something, like opening a LibreOffice file, happns].   While the
application is unresponsive for a moment it opens rather quickly [given
its complexity].

The spreadsheet in question matters [if it is very complicated, contains
nested formulas, has large images], as does your settings.  Getting more
cores probably is not the most effective way to more responsive
performance.  It is more likely a memory or I/O issue.

If you have a class-10 SD card, if you copy the file to there, and open
it [after rebooting], is it faster to open?  If so then it is an I/O
issue.  If you open LibreOffice [not the file, just Libreoffice] and
then exit LibreOffice, and then open the file is it faster?  If so then
it is the load time for LibreOffice and all its dependencies [many of
which will now be cached] and you should enable a preloaded or
LibreOffice quickstart to have that done ahead of time.  How long does
openning LibreOffice and creating a new document take compared to
opening your ODS?

When opening your ODS does it spend a lot of time at a particular phase
- "adapting row height" for example?




-- 
To unsubscribe e-mail to: users+unsubscribe@global.libreoffice.org
Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/
Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette
List archive: http://listarchives.libreoffice.org/global/users/
All messages sent to this list will be publicly archived and cannot be deleted