search for: do_schedule

Hi all, With the new vm-tools we are trying to get top like capabilities going correctly. Currently we have a program vm-list that has some of this capability but is dependent on the cpu time given by libxc calls (xc_get_dom_info & xc_domain_get_cpu_usage). These two functions give you how much time (in nanoseconds, why is this not documented) the domain has been actively used. Approaches:

I''m working on a new hypercall, do_confer, which allows the directed yielding of a vcpu to another vcpu. It is mainly used when a vcpu fails to acquire a spinlock, yielding to the lock holder instead of spinning. I ported the ppc64 spinlock implementation for the i386 linux portion. In implementing the hypercall, I''ve been trying to figure out how to get the scheduler

Hi, I''m a PhD student trying to add some load balancing code to the credit scheduler in order to fit some specific necessities. I''m trying to understand the credit scheduler code and I don''t quite get in which part of it a pcpu starts running a vcpu. I need to keep track of when a vpcu starts running in a cpu and when it stops. Any hint on that? I think that it would

As discussed in a previous e-mail, this patch series implements yield for the credit scheduler. This allows a VM to actually yield (give up the cpu to another VM) when it wants to. This has been shown to be effective when used in the spinlock code to avoid wasting time spinning when another vcpu is not currently scheduled. _______________________________________________ Xen-devel mailing list

...eral: determine which domain to run next*/ + * Reasons for calling this function are: + * -timeslice for the current period used up + * -domain on waitqueue has started it''s period + * -and various others ;) in general: determine which domain to run next + */ static struct task_slice sedf_do_schedule( const struct scheduler *ops, s_time_t now, bool_t tasklet_work_scheduled) { @@ -789,13 +731,14 @@ static struct task_slice sedf_do_schedul struct sedf_vcpu_info *runinf, *waitinf; struct task_slice ret; - /*idle tasks don''t need any of the following stuf*/ + /...