Re: [Xen-devel] [PATCH v5 1/2] xenbus/backend: Add memory pressure handler callback

2019-12-11 Thread SeongJae Park
On Wed, 11 Dec 2019 11:51:12 +0100 "Roger Pau Monné" wrote: > > On Tue, 10 Dec 2019 11:16:35 +0100 "Roger Pau Monné" > > wrote: > > > > diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h > > > > index 869c816d5f8c..cdb075e4182f 100644 > > > > --- a/include/xen/xenbus.h > > > > +++

Re: [Xen-devel] [PATCH v5 1/2] xenbus/backend: Add memory pressure handler callback

2019-12-11 Thread Roger Pau Monné
On Wed, Dec 11, 2019 at 04:50:58AM +0100, SeongJae Park wrote: > On Tue, 10 Dec 2019 11:16:35 +0100 "Roger Pau Monné" > wrote: > > > diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h > > > index 869c816d5f8c..cdb075e4182f 100644 > > > --- a/include/xen/xenbus.h > > > +++

Re: [Xen-devel] [PATCH v5 1/2] xenbus/backend: Add memory pressure handler callback

2019-12-10 Thread SeongJae Park
On Tue, 10 Dec 2019 11:16:35 +0100 "Roger Pau Monné" wrote: > > Granting pages consumes backend system memory. In systems configured > > with insufficient spare memory for those pages, it can cause a memory > > pressure situation. However, finding the optimal amount of the spare > > memory is

Re: [Xen-devel] [PATCH v5 1/2] xenbus/backend: Add memory pressure handler callback

2019-12-10 Thread SeongJae Park
On Tue, Dec 10, 2019 at 11:21 AM Roger Pau Monné wrote: > > On Tue, Dec 10, 2019 at 11:16:35AM +0100, Roger Pau Monné wrote: > > On Tue, Dec 10, 2019 at 08:06:27AM +, SeongJae Park wrote: > > > diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h > > > index 869c816d5f8c..cdb075e4182f

Re: [Xen-devel] [PATCH v5 1/2] xenbus/backend: Add memory pressure handler callback

2019-12-10 Thread Roger Pau Monné
On Tue, Dec 10, 2019 at 11:16:35AM +0100, Roger Pau Monné wrote: > On Tue, Dec 10, 2019 at 08:06:27AM +, SeongJae Park wrote: > > diff --git a/include/xen/xenbus.h b/include/xen/xenbus.h > > index 869c816d5f8c..cdb075e4182f 100644 > > --- a/include/xen/xenbus.h > > +++ b/include/xen/xenbus.h >

Re: [Xen-devel] [PATCH v5 1/2] xenbus/backend: Add memory pressure handler callback

2019-12-10 Thread Roger Pau Monné
On Tue, Dec 10, 2019 at 08:06:27AM +, SeongJae Park wrote: > Granting pages consumes backend system memory. In systems configured > with insufficient spare memory for those pages, it can cause a memory > pressure situation. However, finding the optimal amount of the spare > memory is

Re: [Xen-devel] [PATCH v5 1/2] xenbus/backend: Add memory pressure handler callback

2019-12-10 Thread Jürgen Groß
On 10.12.19 09:06, SeongJae Park wrote: Granting pages consumes backend system memory. In systems configured with insufficient spare memory for those pages, it can cause a memory pressure situation. However, finding the optimal amount of the spare memory is challenging for large systems having

[Xen-devel] [PATCH v5 1/2] xenbus/backend: Add memory pressure handler callback

2019-12-10 Thread SeongJae Park
Granting pages consumes backend system memory. In systems configured with insufficient spare memory for those pages, it can cause a memory pressure situation. However, finding the optimal amount of the spare memory is challenging for large systems having dynamic resource utilization patterns.