On Wed, 26 Sep 2018 08:36:47 -0700 Dave Hansen wrote:
> On 09/26/2018 12:38 AM, Michal Hocko wrote:
> > Why cannot you simply go with [no]vm_page_poison[=on/off]?
>
> I was trying to look to the future a bit, if we end up with five or six
> more other options we want to allow folks to
On 09/26/2018 08:24 AM, Alexander Duyck wrote:
> With no options it works just like slub_debug and enables all
> available options. So in our case it is a NOP since we wanted the
> debugging enabled by default.
Yeah, but slub_debug is different.
First, nobody uses the slub_debug=- option because
On 09/26/2018 12:38 AM, Michal Hocko wrote:
> Why cannot you simply go with [no]vm_page_poison[=on/off]?
I was trying to look to the future a bit, if we end up with five or six
more other options we want to allow folks to enable/disable. I don't
want to end up in a situation where we have a
On Wed 26-09-18 08:24:56, Alexander Duyck wrote:
> On 9/26/2018 12:38 AM, Michal Hocko wrote:
> > On Tue 25-09-18 13:20:12, Alexander Duyck wrote:
> > [...]
> > > + vm_debug[=options] [KNL] Available with CONFIG_DEBUG_VM=y.
> > > + May slow down system boot speed, especially
On 9/26/2018 12:38 AM, Michal Hocko wrote:
On Tue 25-09-18 13:20:12, Alexander Duyck wrote:
[...]
+ vm_debug[=options] [KNL] Available with CONFIG_DEBUG_VM=y.
+ May slow down system boot speed, especially when
+ enabled on systems with a
On Tue 25-09-18 13:20:12, Alexander Duyck wrote:
[...]
> + vm_debug[=options] [KNL] Available with CONFIG_DEBUG_VM=y.
> + May slow down system boot speed, especially when
> + enabled on systems with a large amount of memory.
> +
On 9/25/2018 3:14 PM, Dave Hansen wrote:
On 09/25/2018 01:38 PM, Alexander Duyck wrote:
On 9/25/2018 1:26 PM, Dave Hansen wrote:
On 09/25/2018 01:20 PM, Alexander Duyck wrote:
+ vm_debug[=options] [KNL] Available with CONFIG_DEBUG_VM=y.
+ May slow down system boot speed,
On 09/25/2018 01:38 PM, Alexander Duyck wrote:
> On 9/25/2018 1:26 PM, Dave Hansen wrote:
>> On 09/25/2018 01:20 PM, Alexander Duyck wrote:
>>> + vm_debug[=options] [KNL] Available with CONFIG_DEBUG_VM=y.
>>> + May slow down system boot speed, especially when
>>> +
On 9/25/2018 1:26 PM, Dave Hansen wrote:
On 09/25/2018 01:20 PM, Alexander Duyck wrote:
+ vm_debug[=options] [KNL] Available with CONFIG_DEBUG_VM=y.
+ May slow down system boot speed, especially when
+ enabled on systems with a large
On 09/25/2018 01:20 PM, Alexander Duyck wrote:
> + vm_debug[=options] [KNL] Available with CONFIG_DEBUG_VM=y.
> + May slow down system boot speed, especially when
> + enabled on systems with a large amount of memory.
> + All
On systems with a large amount of memory it can take a significant amount
of time to initialize all of the page structs with the PAGE_POISON_PATTERN
value. I have seen it take over 2 minutes to initialize a system with
over 12TB of RAM.
In order to work around the issue I had to disable
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