Le 20/09/2013 05:34, Alexander Graf a écrit :
On 18.09.2013, at 02:33, Guillaume Gardet wrote:
Le 16/09/2013 16:17, Alexander Graf a écrit :
Hey,
Am 16.09.2013 um 07:12 schrieb Guillaume Gardet <guillaume.gardet@free.fr>:
Hi,
I would like to enable a kernel-desktop for ARM, especially for GFX images.
I modified kernel-default by using CONFIG_PREEMPT instead of CONFIG_PREEMPT_NONE. Couldn't we just make preempt_desktop the default for armv7? It could save us a kernel flavour build but CONFIG_PREEMPT_NONE would be better for servers (better dry performances) and CONFIG_PREEMPT would be better for desktop interfaces (less latency). Well, is the difference significant? If the loss in performance for server style workloads is negligible, why not always enable preemption?
I did not benchmark it, but I guess there is a significant difference, otherwise, openSUSE x86 kernels would not have 2 flavours. Maybe, we should ask on -kernel ML? Is there anyone having opinion/benchmark about that? One thing is sure, preempt gives a better desktop user experience. Guillaume -- To unsubscribe, e-mail: opensuse-arm+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-arm+owner@opensuse.org