On 09/03/2009 01:50 AM, Anne Wilson wrote: > On Wednesday 02 September 2009 20:09:43 Emmett Culley wrote: >> On 09/01/2009 10:24 AM, Emmett Culley wrote: >>> Since upgrading to KDE 4.3 on Fedora 11 I have noticed that X CPU usage >>> gets up to 99% of CPU usage and plasma-desktop stays around 20% CUP >>> usage. If I shut everything down on the desktop the usage for both >>> remains at 80 - 99% and 15- 20%. If I end the session (ctl-alt >>> backspace) both X and plasma-desktop drop off to nil CPU usage. >>> >>> Upon restart of KDE CPU usage for X and plasma-desktop is sometimes >>> normal (low) after the system settles, and some times not. But in all >>> cases, after some time the CPU usage for X and plasma-desktop climb back >>> up to 80 to 90% for X and 15 to 25% for plasma-desktop. >>> >>> Anybody else seeing this? >>> > >> After more experimenting I've found the following: >> >> Each time I reboot my system, CPU usage for plasma-desktop and X is high >> (as described above). >> >> If I log out (via the Leave menu) and log back in, the high CPU usages >> remains the same. >> >> If I kill X (ctl-alt backspace) then log back in, the desktop comes back up >> with "normal" CPU usage for both, and it stays that way. >> >> I have four CPU cores (two dual core Opterons), so the CPU usage is almost >> unnoticeable in the UI. The UI is just sluggish enough to be noticeable. >> But, it wasn't until I noticed consistently high CPU usage in Gkrellm that >> I began to investigate. >> > Of course your problem may be entirely different, but every time gkrellm shows > me this runaway behaviour I open top. Without fail it is either firefox, > thunderbird or nspluginviewer. Killing those invariably stops the problem. > > Anne > > In this case the X and plasma-desktop CPU usage increase happens immediately after the desktop comes up. Before any applications except Kontact and Gkrellm. When I close those two apps top still shows X CPU usage at 80-99% and plasma-desktop usage at 18-25%. Only hitting ctl-alt backspace and re-logging in stops that excessive CPU usage by those to processes. Emmett
