On Sun, Jul 28, 2024 at 02:06:41PM +, Michael Kelley wrote:
> From: Saurabh Singh Sengar Sent: Sunday, July
> 28, 2024 2:18 AM
> >
> > On Sun, Jul 28, 2024 at 04:32:23AM +, Michael Kelley wrote:
> > > From: Saurabh Sengar Sent: Wednesday, July
> > > 24,
> > 2024 10:26 PM
> > > >
> > >
From: Saurabh Singh Sengar Sent: Sunday, July 28,
2024 2:18 AM
>
> On Sun, Jul 28, 2024 at 04:32:23AM +, Michael Kelley wrote:
> > From: Saurabh Sengar Sent: Wednesday, July 24,
> 2024 10:26 PM
> > >
> > > Currently on a very large system with 1780 CPUs, hv_acpi_init takes
> > > around 3 se
On Sun, Jul 28, 2024 at 04:32:23AM +, Michael Kelley wrote:
> From: Saurabh Sengar Sent: Wednesday, July 24,
> 2024 10:26 PM
> >
> > Currently on a very large system with 1780 CPUs, hv_acpi_init takes
> > around 3 seconds to complete for all the CPUs. This is because of
> > sequential synic
From: Saurabh Sengar Sent: Wednesday, July 24,
2024 10:26 PM
>
> Currently on a very large system with 1780 CPUs, hv_acpi_init takes
> around 3 seconds to complete for all the CPUs. This is because of
> sequential synic initialization for each CPU.
>
> Defer these tasks so that each CPU execute
: Thursday, July 25, 2024 8:35 AM
> > > > Subject: Re: [PATCH] Drivers: hv: vmbus: Deferring per cpu tasks
> > >
> > > Without the patch, I think the current CPU uses IPIs to let the other
> > > CPUs, one by one, run the function calls, and synchronously waits
> > &g
On Fri, Jul 26, 2024 at 06:34:53AM +, Srivatsa S. Bhat wrote:
> On Fri, Jul 26, 2024 at 12:01:33AM +, Dexuan Cui wrote:
> > > From: Saurabh Singh Sengar
> > > Sent: Thursday, July 25, 2024 8:35 AM
> > > Subject: Re: [PATCH] Drivers: hv: vmbus: Deferring per
On Fri, Jul 26, 2024 at 12:01:33AM +, Dexuan Cui wrote:
> > From: Saurabh Singh Sengar
> > Sent: Thursday, July 25, 2024 8:35 AM
> > Subject: Re: [PATCH] Drivers: hv: vmbus: Deferring per cpu tasks
>
> Without the patch, I think the current CPU uses IPIs to let the
> From: Saurabh Singh Sengar
> Sent: Thursday, July 25, 2024 10:27 PM
> [...]
> > > + ret = __cpuhp_setup_state_cpuslocked(CPUHP_AP_ONLINE_DYN,
> > > "hyperv/vmbus:online", false,
> > > + hv_synic_init, hv_synic_cleanup,
> > > false);
> > > + cpus_read_unlock()
On Fri, Jul 26, 2024 at 12:01:33AM +, Dexuan Cui wrote:
> > From: Saurabh Singh Sengar
> > Sent: Thursday, July 25, 2024 8:35 AM
> > Subject: Re: [PATCH] Drivers: hv: vmbus: Deferring per cpu tasks
>
> Without the patch, I think the current CPU uses IPIs to let the
> From: Saurabh Singh Sengar
> Sent: Thursday, July 25, 2024 8:35 AM
> Subject: Re: [PATCH] Drivers: hv: vmbus: Deferring per cpu tasks
Without the patch, I think the current CPU uses IPIs to let the other
CPUs, one by one, run the function calls, and synchronously waits
for the funct
On Thu, Jul 25, 2024 at 08:23:21AM -0700, Nuno Das Neves wrote:
> On 7/24/2024 10:26 PM, Saurabh Sengar wrote:
> > Currently on a very large system with 1780 CPUs, hv_acpi_init takes
> > around 3 seconds to complete for all the CPUs. This is because of
> > sequential synic initialization for each C
On 7/24/2024 10:26 PM, Saurabh Sengar wrote:
> Currently on a very large system with 1780 CPUs, hv_acpi_init takes
> around 3 seconds to complete for all the CPUs. This is because of
> sequential synic initialization for each CPU.
>
> Defer these tasks so that each CPU executes hv_acpi_init in par
Currently on a very large system with 1780 CPUs, hv_acpi_init takes
around 3 seconds to complete for all the CPUs. This is because of
sequential synic initialization for each CPU.
Defer these tasks so that each CPU executes hv_acpi_init in parallel
to take full advantage of multiple CPUs.
This so
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