On Lun 2 janvier 2006 23:38, Ivan Gyurdiev wrote: > Nicolas Mailhot wrote: >> darrell pfeifer wrote: >>> I have a two year old laptop that uses the radeon driver. >>> >>> The last few kernels from rawhide left a really sluggish response. >>> Switching between virtual screens gave a really noticeable repaint. I >>> also had the feeling that I/O in general was very slow. >>> >>> The latest 1806 kernel is much better, so this might not be an X >>> problem. >> >> My feeling was more some sort of scheduler problem, with apps being >> randomly starved. As long as you stayed in the same app everything was >> very fast, trying to switch or launch a new app would either be >> reasonably fast of slow as hell. Starvation was not linked to any >> particular app, more (like Ivan noted) to launch ordering. >> >> I never noticed any particular load peak that could explain the >> slowdowns. And this box had 256 MB which is not bad for its generation >> and the only reason it can still be used. > But see...those are all GUI apps. Yep CLI is not affected. > More specifically, they're all gtk apps. > Correct me if I'm wrong, but wouldn't a kernel issue affect all apps on > the system - it doesn't appear that way to me. Also, I don't know if > this is relevant, but if you compare `strace -c` on a fast and slow run, > they look almost exactly the same syscall distribution, and cover a very > small amount of total time (1 sec). > > I was particularly interested in bittorrent, as a simple test case - > doesn't it only link to gtk2 over pygtk2? We know python isn't the > issue, since C apps are slow too. > > However... this is interesting. I observe no slowdown as root - all the > apps start reasonably fast. Can you confirm this? Not before quite a long time - won't even touch the slow system for a few months. Regards, -- Nicolas Mailhot -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
