Peter Zijlstra wrote:
On Fri, 2008-02-15 at 11:46 -0500, Gregory Haskins wrote:
but perhaps you can convince me that it is not needed?
(i.e. I am still not understanding how the timer guarantees the stability).
ok, let me try again.
So we take rq->lock, at this point we know rd is
Peter Zijlstra wrote:
On Fri, 2008-02-15 at 11:46 -0500, Gregory Haskins wrote:
but perhaps you can convince me that it is not needed?
(i.e. I am still not understanding how the timer guarantees the stability).
ok, let me try again.
So we take rq-lock, at this point we know rd is
On Fri, 2008-02-15 at 11:46 -0500, Gregory Haskins wrote:
> Peter Zijlstra wrote:
>
> > @@ -6342,8 +6351,14 @@ static void rq_attach_root(struct rq *rq
> > cpu_clear(rq->cpu, old_rd->span);
> > cpu_clear(rq->cpu, old_rd->online);
> >
> > - if
Peter Zijlstra wrote:
Currently the lb_monitor will walk all the domains/cpus from a single
cpu's timer interrupt. This will cause massive cache-trashing and cache-line
bouncing on larger machines.
Split the lb_monitor into root_domain (disjoint sched-domains).
Signed-off-by: Peter Zijlstra
Peter Zijlstra wrote:
Currently the lb_monitor will walk all the domains/cpus from a single
cpu's timer interrupt. This will cause massive cache-trashing and cache-line
bouncing on larger machines.
Split the lb_monitor into root_domain (disjoint sched-domains).
Signed-off-by: Peter Zijlstra
On Fri, 2008-02-15 at 11:46 -0500, Gregory Haskins wrote:
Peter Zijlstra wrote:
@@ -6342,8 +6351,14 @@ static void rq_attach_root(struct rq *rq
cpu_clear(rq-cpu, old_rd-span);
cpu_clear(rq-cpu, old_rd-online);
- if
Currently the lb_monitor will walk all the domains/cpus from a single
cpu's timer interrupt. This will cause massive cache-trashing and cache-line
bouncing on larger machines.
Split the lb_monitor into root_domain (disjoint sched-domains).
Signed-off-by: Peter Zijlstra <[EMAIL PROTECTED]>
CC:
Currently the lb_monitor will walk all the domains/cpus from a single
cpu's timer interrupt. This will cause massive cache-trashing and cache-line
bouncing on larger machines.
Split the lb_monitor into root_domain (disjoint sched-domains).
Signed-off-by: Peter Zijlstra [EMAIL PROTECTED]
CC:
8 matches
Mail list logo
