-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 04/01/12 14:40, Vasek wrote: > Gustav Eje Henter <gustav.henter <at> ee.kth.se> writes: > >> >> Hello LyX people, >> >> Thank you for a wonderful piece of software! Unfortunately, I've >> been seeing performance issues for a while which have been >> slowing my work. >> >> The issue is that some tabs are very sluggish. Scrolling takes >> approximately > one >> second per tick on the mouse wheel, and similarly for Page >> Up/Page Down. > Typing >> sometimes lags many characters behind, math mode being >> particularly bad at approximately one character per second. This >> appears not to be related to document length. >> >> The weird part is that the issue occurs on a per-tab basis. After >> having been open for a day, some tabs revert to normal speed >> again. Fast tabs can also become slow, particularly when new tabs >> are opened. Today, however, I noticed that it is possible to have >> a slow and a regular-speed tab open simultaneously in the same >> instance of LyX (performance depends on which tab that is >> active), which is what made me contact you. >> >> Checking top shows that memory is not an issue, but that a large >> fraction of user CPU is consumed by Xorg during slowdowns. >> http://wiki.lyx.org/Tips/PerformanceIssues states that "When top >> shows that > 90% >> of CPU time is taken by X and not LyX there is something to be >> done with your > QT >> & X settings not LyX itself." Is this still applicable if only >> certain tabs > are >> affected? >> >> For the record, I am running LyX Version 2.0.0 (Friday, April 29, >> 2011), the latest binary distributed with my Ubuntu 11.04 system. >> My computer is a Dell Latitude laptop with an Intel Core2 Duo >> T7500 (2.2 GHz) and several Gigs of > RAM. >> I'm running Gnome 2.32.1 (build date 2011-04-14) -- not the Unity >> interface -- with desktop effects disabled, and I am using the >> official NVIDIA drivers version 270.41.06. My test documents are >> four-page scientific paper drafts > with >> nothing too heavy inside, but with a little bit of everything >> (references, > math, >> a figure, and a table). >> >> Do you think this is a LyX issue or not? I looked at a few perf >> bugs on Trac > but >> didn't see anything compelling. >> >> Best regards, Gustav Henter >> >> ====================================================================== >> >> Gustav Eje Henter, Ph.D. student E-mail: gustav.henter <at> ee.kth.se >> Sound and Image Processing Lab, EES, Web: >> http://www.ee.kth.se/sip/ KTH - Royal Institute of Technology, >> Stockholm, SWEDEN >> ====================================================================== >> >> > >> > > Hi, I had the same problem on 11.04. Upgrade to the latest version > solved it for me. I did the following: > > 1. run: sudo apt-get build-dep lyx > > 2. Download source packages for the latest LyX from precise: > http://packages.ubuntu.com/precise/lyx [lyx_2.0.2-1ubuntu1.dsc] > [lyx_2.0.2.orig.tar.gz] [lyx_2.0.2-1ubuntu1.debian.tar.gz] > > in a temporary folder, and run dpkg-source -x > lyx_2.0.2-1ubuntu1.dsc > > 3. build package: cd lyx-2.0.2/ dpkg-buildpackage -rfakeroot -uc > -b > > 4. install packages: cd .. sudo dpkg -i *.deb > > I worked flawlessly and performance is far better.
Definitely recommended, but I experienced a considerable slow down in scrolling when floats with graphics / tables are open - may be the case for you as well? Rainer > > Vasek > > - -- Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany) Centre of Excellence for Invasion Biology Stellenbosch University South Africa Tel : +33 - (0)9 53 10 27 44 Cell: +33 - (0)6 85 62 59 98 Fax : +33 - (0)9 58 10 27 44 Fax (D): +49 - (0)3 21 21 25 22 44 email: rai...@krugs.de Skype: RMkrug -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEUEARECAAYFAk8EWekACgkQoYgNqgF2ego/oQCXTRxCmKJKyEa/Swo699B7+hHW 1ACeMn2nSu9SEiAqEZRTDC4Mkfkb97Q= =4/Vy -----END PGP SIGNATURE-----
