Hi, I discovered a strange behaviour with matrox Flip() time. With kernel 2.6.15-gentoo-r1 I have a flip time of 13329 microseconds. With kernel 2.6.17.6 & 2.6.18.2 measured flip times are greater than 106000 microseconds.
This huge flip time results in jerkey pictures when using vdr + softdevice on 2.6.17.6. Playback on 2.6.15-gentoo-r1 is rather smooth. Timer frequency on all kernels versions is CONFIG_HZ=250 >From /proc/interrupts while application is running: 2.6.15-gentoo-r1 : 19: 7118 IO-APIC-level ohci_hcd:usb3, matroxfb 2.6.18.2: 19: 8990 IO-APIC-level ohci_hcd:usb3, [EMAIL PROTECTED]:0000:01:00.0, matroxfb All kernels have the following set: CONFIG_DRM=m CONFIG_DRM_RADEON=m CONFIG_DRM_MGA=m So I disabled CONFIG_DRM_MGA. As there is no module mga anymore, IRQ allocation is now: 19: 6038 IO-APIC-level ohci_hcd:usb3, matroxfb Flip() time is now fine too: [dfb] Display frame time is 13329 microseconds -- Stefan Lucke _______________________________________________ directfb-users mailing list [email protected] http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-users
