On Thu, 2018-02-15 at 10:07 -0800, Rohit Jain wrote:
>
> > Rohit is running more tests with a patch that deletes
> > sysctl_sched_migration_cost from idle_balance, and for his patch but
> > with the 5000 usec mistake corrected back to 500 usec. So far both
> > give improvements over the baseline,
On Thu, 2018-02-15 at 13:21 -0500, Steven Sistare wrote:
> On 2/15/2018 1:07 PM, Mike Galbraith wrote:
>
> >> Can you provide more details on the sysbench oltp test that motivated you
> >> to add sysctl_sched_migration_cost to idle_balance, so Rohit can re-test
> >> it?
> >
> > The problem at th
On 2/15/2018 1:07 PM, Mike Galbraith wrote:
> On Thu, 2018-02-15 at 11:35 -0500, Steven Sistare wrote:
>> On 2/10/2018 1:37 AM, Mike Galbraith wrote:
>>> On Fri, 2018-02-09 at 11:08 -0500, Steven Sistare wrote:
>> @@ -8804,7 +8803,8 @@ static int idle_balance(struct rq *this_rq, struct
>>
On Thu, 2018-02-15 at 11:35 -0500, Steven Sistare wrote:
> On 2/10/2018 1:37 AM, Mike Galbraith wrote:
> > On Fri, 2018-02-09 at 11:08 -0500, Steven Sistare wrote:
> @@ -8804,7 +8803,8 @@ static int idle_balance(struct rq *this_rq, struct
> rq_flags *rf)
> if (!(sd-
On 02/15/2018 08:35 AM, Steven Sistare wrote:
On 2/10/2018 1:37 AM, Mike Galbraith wrote:
On Fri, 2018-02-09 at 11:08 -0500, Steven Sistare wrote:
@@ -8804,7 +8803,8 @@ static int idle_balance(struct rq *this_rq, struct
rq_flags *rf)
if (!(sd->flags & SD_LOAD_BALANCE))
On 2/10/2018 1:37 AM, Mike Galbraith wrote:
> On Fri, 2018-02-09 at 11:08 -0500, Steven Sistare wrote:
@@ -8804,7 +8803,8 @@ static int idle_balance(struct rq *this_rq, struct
rq_flags *rf)
if (!(sd->flags & SD_LOAD_BALANCE))
continue;
On Fri, 2018-02-09 at 11:08 -0500, Steven Sistare wrote:
> >> @@ -8804,7 +8803,8 @@ static int idle_balance(struct rq *this_rq, struct
> >> rq_flags *rf)
> >>if (!(sd->flags & SD_LOAD_BALANCE))
> >>continue;
> >>
> >> - if (this_rq->avg_idle < curr_cost +
On 2/8/2018 10:42 PM, Mike Galbraith wrote:
> On Thu, 2018-02-08 at 14:19 -0800, Rohit Jain wrote:
>> This patch makes idle_balance more dynamic as the sched_migration_cost
>> is now accounted on a sched_domain level. This in turn is done in
>> sd_init when we know what the topology relationships a
On Thu, 2018-02-08 at 14:19 -0800, Rohit Jain wrote:
> This patch makes idle_balance more dynamic as the sched_migration_cost
> is now accounted on a sched_domain level. This in turn is done in
> sd_init when we know what the topology relationships are.
>
> For introduction sakes cost of migration
This patch makes idle_balance more dynamic as the sched_migration_cost
is now accounted on a sched_domain level. This in turn is done in
sd_init when we know what the topology relationships are.
For introduction sakes cost of migration within the same core is set as
0, across cores is 50 usec and
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