Hi Christian, But this is 2GB which even rounded up to 128M is 1920MB?? The RAM dataspace should be plenty big enough.
Daniel On Wed, 2013-07-10 at 20:26 +0200, Christian Prochaska wrote: > Hi Daniel, > > On 10.07.2013 16:48, Daniel Waddington wrote: > > Hi Alex, > > I see, so there is some 2^N round up. Why is this, I thought it used an > > AVL tree to manage memory? > > >From my understanding it's a mapping optimization for some kernels. > >Something like: mapping 64M to another task can be done with one > syscall if the address has 64M alignment. But I'm not familiar with the > details, perhaps somebody else can help out here? > > > Also, can you run the test with.. > > > > #define NUM_REGIONS 15 > > #define TOTAL_MEMORY_TO_USE GB(2) > > #define REGION_SIZE MB(96) > > > > I then get unhandled page faults. Can you see why? > > > > Thanks > > Daniel > > > > When only changing these values, the RAM dataspace is too small > (phys_slab_size = GB(1)) for 15 regions of 96M. Usually, it would be > an error if 'Ram_session::attach()' gets called with an 'offset' which > exceeds the size of the dataspace (which happens in this > case), but if I remember correctly there was a use case where this was valid. > Something with ELF images and the dynamic linker. > @ssumpf, do you remember? We should probably document this in > 'Rm_session_component::attach()', why no exception gets thrown if > 'size' is given and (offset >= dsc()->size()). > > Christian > > > ------------------------------------------------------------------------------ > See everything from the browser to the database with AppDynamics > Get end-to-end visibility with application monitoring from AppDynamics > Isolate bottlenecks and diagnose root cause in seconds. > Start your free trial of AppDynamics Pro today! > http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk > _______________________________________________ > Genode-main mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/genode-main ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ Genode-main mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/genode-main
