Messages in this thread | | | Subject | Re: 2.6.1-mm1: drivers/video/sis/sis_main.c link error | From | Valdis.Kletnieks@vt ... | Date | Mon, 12 Jan 2004 01:11:17 -0500 |
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On Sun, 11 Jan 2004 21:42:59 PST, Andrew Morton said: > Gene Heskett <gene.heskett@verizon.net> wrote: > > hubble of about 4 or 5 months back. In any other kernel, switching > > to that window took about 12 seconds for the backdrop to be converted > > to 1600x1200x32 and drawn the first time and about 8 seconds for the > > next time. But with this 2.6.1-mm1 kernel, that repeat window switch > > is so close to instant that I cannot see it being drawn.
> There are no significant fbdev patches in 2.6.1-mm1. There is a DRM > update.
The 12 seconds coming and 8 seconds going, versus instant, sounds an *awful* lot like the virtual memory manager making better choices in -mm kernels, so the pages of pixmap are staying in memory rather than paging out.
Other guess is that o21-sched.patch is DTRT, while the stock scheduler DTWT for his particular config.
Gene: Can you tell what exactly your system is doing for the 12/8 seconds? Is it CPU bound, or beating on the disk while paging in/out, or just sitting idle? Leaving a 'vmstat 1' running while you change backdrops should tell us something. [unhandled content-type:application/pgp-signature] | |