On 11/07/2017 02:41 PM, Peter Zijlstra wrote:
> On Tue, Nov 07, 2017 at 11:39:02AM -0500, Waiman Long wrote:
>> On 11/07/2017 07:58 AM, Peter Zijlstra wrote:
>>> On Fri, Nov 03, 2017 at 11:35:31AM -0400, Waiman Long wrote:
This patch combines the best attributes of an unfair lock and a
On 11/07/2017 02:41 PM, Peter Zijlstra wrote:
> On Tue, Nov 07, 2017 at 11:39:02AM -0500, Waiman Long wrote:
>> On 11/07/2017 07:58 AM, Peter Zijlstra wrote:
>>> On Fri, Nov 03, 2017 at 11:35:31AM -0400, Waiman Long wrote:
This patch combines the best attributes of an unfair lock and a
On Tue, Nov 07, 2017 at 11:39:02AM -0500, Waiman Long wrote:
> On 11/07/2017 07:58 AM, Peter Zijlstra wrote:
> > On Fri, Nov 03, 2017 at 11:35:31AM -0400, Waiman Long wrote:
> >> This patch combines the best attributes of an unfair lock and a
> >> pvqspinlock into a hybrid lock with 2 modes -
On Tue, Nov 07, 2017 at 11:39:02AM -0500, Waiman Long wrote:
> On 11/07/2017 07:58 AM, Peter Zijlstra wrote:
> > On Fri, Nov 03, 2017 at 11:35:31AM -0400, Waiman Long wrote:
> >> This patch combines the best attributes of an unfair lock and a
> >> pvqspinlock into a hybrid lock with 2 modes -
On 11/07/2017 07:58 AM, Peter Zijlstra wrote:
> On Fri, Nov 03, 2017 at 11:35:31AM -0400, Waiman Long wrote:
>> Currently, all the lock waiters entering the slowpath will do one
>> lock stealing attempt to acquire the lock. That helps performance,
>> especially in VMs with over-committed vCPUs.
On 11/07/2017 07:58 AM, Peter Zijlstra wrote:
> On Fri, Nov 03, 2017 at 11:35:31AM -0400, Waiman Long wrote:
>> Currently, all the lock waiters entering the slowpath will do one
>> lock stealing attempt to acquire the lock. That helps performance,
>> especially in VMs with over-committed vCPUs.
On Fri, Nov 03, 2017 at 11:35:31AM -0400, Waiman Long wrote:
> Currently, all the lock waiters entering the slowpath will do one
> lock stealing attempt to acquire the lock. That helps performance,
> especially in VMs with over-committed vCPUs. However, the current
> pvqspinlocks still don't
On Fri, Nov 03, 2017 at 11:35:31AM -0400, Waiman Long wrote:
> Currently, all the lock waiters entering the slowpath will do one
> lock stealing attempt to acquire the lock. That helps performance,
> especially in VMs with over-committed vCPUs. However, the current
> pvqspinlocks still don't
On 03/11/2017 16:35, Waiman Long wrote:
> Currently, all the lock waiters entering the slowpath will do one
> lock stealing attempt to acquire the lock. That helps performance,
> especially in VMs with over-committed vCPUs. However, the current
> pvqspinlocks still don't perform as good as unfair
On 03/11/2017 16:35, Waiman Long wrote:
> Currently, all the lock waiters entering the slowpath will do one
> lock stealing attempt to acquire the lock. That helps performance,
> especially in VMs with over-committed vCPUs. However, the current
> pvqspinlocks still don't perform as good as unfair
On 03/11/17 16:35, Waiman Long wrote:
> Currently, all the lock waiters entering the slowpath will do one
> lock stealing attempt to acquire the lock. That helps performance,
> especially in VMs with over-committed vCPUs. However, the current
> pvqspinlocks still don't perform as good as unfair
On 03/11/17 16:35, Waiman Long wrote:
> Currently, all the lock waiters entering the slowpath will do one
> lock stealing attempt to acquire the lock. That helps performance,
> especially in VMs with over-committed vCPUs. However, the current
> pvqspinlocks still don't perform as good as unfair
Currently, all the lock waiters entering the slowpath will do one
lock stealing attempt to acquire the lock. That helps performance,
especially in VMs with over-committed vCPUs. However, the current
pvqspinlocks still don't perform as good as unfair locks in many cases.
On the other hands, unfair
Currently, all the lock waiters entering the slowpath will do one
lock stealing attempt to acquire the lock. That helps performance,
especially in VMs with over-committed vCPUs. However, the current
pvqspinlocks still don't perform as good as unfair locks in many cases.
On the other hands, unfair
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