"DBus Embedded" - a clean break

Kees Jongenburger kees.jongenburger at gmail.com
Thu Jan 20 09:42:29 PST 2011


On Thu, Jan 20, 2011 at 1:18 PM, Rob Taylor <rob.taylor at codethink.co.uk> wrote:
> On 20/01/11 13:47, Thiago Macieira wrote:
> On Thursday, 20 de January de 2011 10:09:00 Rob Taylor wrote:
> P.S.  Context for those not involved in embedded systems: consider that
> I generally estimate send->receive time of 30ms for a single dbus
> message going via the bus on capable ARM systems. That means the time
> for 10 IPC calls is a human-visible time.
> My benchmarks on the N900 produce 4 to 5 ms for the roundtrip.
> That's not just me either:
> http://permalink.gmane.org/gmane.comp.freedesktop.dbus/10252
> Good stuff, I've obviously been being too pessimistic! Are your bench marks
> measuring different message sizes and processor loads?

That test focuses on latency (not much data is sent over the bus) to
perhaps this explains some differences?

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