* Nish Aravamudan <[EMAIL PROTECTED]> [2008-01-27 12:22:54]:
> On 1/27/08, Balbir Singh <[EMAIL PROTECTED]> wrote:
> > * Paul Mackerras <[EMAIL PROTECTED]> [2008-01-27 22:55:43]:
> >
> > > Balbir Singh writes:
> > >
> > > > Here's a better and more complete fix for the problem. Could you
> > > > p
On 1/27/08, Balbir Singh <[EMAIL PROTECTED]> wrote:
> * Paul Mackerras <[EMAIL PROTECTED]> [2008-01-27 22:55:43]:
>
> > Balbir Singh writes:
> >
> > > Here's a better and more complete fix for the problem. Could you
> > > please see if it works for you? I tested it on a real NUMA box and it
> > > s
* Paul Mackerras <[EMAIL PROTECTED]> [2008-01-27 22:55:43]:
> Balbir Singh writes:
>
> > Here's a better and more complete fix for the problem. Could you
> > please see if it works for you? I tested it on a real NUMA box and it
> > seemed to work fine there.
>
> There are a couple of other chang
Balbir Singh writes:
> Here's a better and more complete fix for the problem. Could you
> please see if it works for you? I tested it on a real NUMA box and it
> seemed to work fine there.
There are a couple of other changes in behaviour that your patch
introduces, and I'd like to understand them
* Michael Ellerman <[EMAIL PROTECTED]> [2008-01-18 16:44:58]:
>
> This fixes it, although I'm a little worried about some of the
> removals/movings of node_set_online() in the patch.
>
>
> diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
> index 1666e7d..dcedc26 100644
> --- a/arch/
* Michael Ellerman <[EMAIL PROTECTED]> [2008-01-18 16:44:58]:
> On Fri, 2008-01-18 at 16:34 +1100, Michael Ellerman wrote:
> > On Sat, 2007-12-08 at 04:07 +0530, Balbir Singh wrote:
> > > Changelog
> > >
> > > 1. Get rid of the constant 5 (based on comments from
> > >
* Michael Ellerman <[EMAIL PROTECTED]> [2008-01-18 16:55:03]:
> On Sat, 2007-12-08 at 04:07 +0530, Balbir Singh wrote:
> > Here's a dumb simple implementation of fake NUMA nodes for PowerPC. Fake
> > NUMA nodes can be specified using the following command line option
> >
>
> >
> > Comments are
* Michael Ellerman <[EMAIL PROTECTED]> [2008-01-18 16:34:53]:
> On Sat, 2007-12-08 at 04:07 +0530, Balbir Singh wrote:
> > Changelog
> >
> > 1. Get rid of the constant 5 (based on comments from
> > [EMAIL PROTECTED])
> > 2. Implement suggestions from Olof Johannson
On Sat, 2007-12-08 at 04:07 +0530, Balbir Singh wrote:
> Here's a dumb simple implementation of fake NUMA nodes for PowerPC. Fake
> NUMA nodes can be specified using the following command line option
>
>
> Comments are as always welcome!
Here's some :)
> diff -puN arch/powerpc/mm/numa.c~ppc-fa
On Fri, 2008-01-18 at 16:34 +1100, Michael Ellerman wrote:
> On Sat, 2007-12-08 at 04:07 +0530, Balbir Singh wrote:
> > Changelog
> >
> > 1. Get rid of the constant 5 (based on comments from
> > [EMAIL PROTECTED])
> > 2. Implement suggestions from Olof Johannson
> >
On Sat, 2007-12-08 at 04:07 +0530, Balbir Singh wrote:
> Changelog
>
> 1. Get rid of the constant 5 (based on comments from
> [EMAIL PROTECTED])
> 2. Implement suggestions from Olof Johannson
> 3. Check if cmdline is NULL in fake_numa_create_new_node()
>
> Tested w
On Sat, Dec 08, 2007 at 04:07:14AM +0530, Balbir Singh wrote:
> Signed-off-by: Balbir Singh <[EMAIL PROTECTED]>
Looks good to me. Sure, it could be fleshed out to something more
generic and in common code, but this is small and simple and doesn't
bloat the kernel much as it stands, and it has val
Balbir Singh wrote:
> Changelog
>
> 1. Get rid of the constant 5 (based on comments from
> [EMAIL PROTECTED])
> 2. Implement suggestions from Olof Johannson
> 3. Check if cmdline is NULL in fake_numa_create_new_node()
>
> Tested with additional parameters from Olof
Pavel Machek wrote:
> On Sat 2007-12-08 09:52:06, Balbir Singh wrote:
>> David Rientjes wrote:
>>> On Sat, 8 Dec 2007, Balbir Singh wrote:
>>>
To be able to test the memory controller under NUMA, I use fake NUMA
nodes. x86-64 has a similar feature, the code I have here is the
simples
On Sat 2007-12-08 09:52:06, Balbir Singh wrote:
> David Rientjes wrote:
> > On Sat, 8 Dec 2007, Balbir Singh wrote:
> >
> >> To be able to test the memory controller under NUMA, I use fake NUMA
> >> nodes. x86-64 has a similar feature, the code I have here is the
> >> simplest I could come up wit
On Sat, 8 Dec 2007, Balbir Singh wrote:
> > You're going to want to distribute the cpu's based on how they match up
> > physically with the actual platform that you're running on. x86_64 does
>
> Could you explain this better, how does it match up CPU's with fake NUMA
> memory? Is there some s
David Rientjes wrote:
> On Sat, 8 Dec 2007, Balbir Singh wrote:
>
>> Yes, they all appear on node 0. We could have tweaks to distribute CPU's
>> as well.
>>
>
> You're going to want to distribute the cpu's based on how they match up
> physically with the actual platform that you're running on.
David Rientjes wrote:
> On Sat, 8 Dec 2007, Balbir Singh wrote:
>
>> To be able to test the memory controller under NUMA, I use fake NUMA
>> nodes. x86-64 has a similar feature, the code I have here is the
>> simplest I could come up with for PowerPC.
>>
>
> Magnus Damm had patches from over a ye
On Sat, 8 Dec 2007, Balbir Singh wrote:
> Yes, they all appear on node 0. We could have tweaks to distribute CPU's
> as well.
>
You're going to want to distribute the cpu's based on how they match up
physically with the actual platform that you're running on. x86_64 does
this already and it m
On Sat, 8 Dec 2007, Balbir Singh wrote:
> To be able to test the memory controller under NUMA, I use fake NUMA
> nodes. x86-64 has a similar feature, the code I have here is the
> simplest I could come up with for PowerPC.
>
Magnus Damm had patches from over a year ago that, I believe, made much
On Fri, 7 Dec 2007, Olof Johansson wrote:
> > Comments are as always welcome!
>
> Care to explain what this is useful for? (Not saying it's a stupid idea,
> just wondering what the reason for doing it is).
>
Fake NUMA has always been useful for testing NUMA code without having to
have a wide r
Changelog
1. Get rid of the constant 5 (based on comments from
[EMAIL PROTECTED])
2. Implement suggestions from Olof Johannson
3. Check if cmdline is NULL in fake_numa_create_new_node()
Tested with additional parameters from Olof
numa=debug,fake=
numa=foo,fake=ba
Nathan Lynch wrote:
> Hi Balbir-
>
> Balbir Singh wrote:
>>
>> Here's a dumb simple implementation of fake NUMA nodes for PowerPC. Fake
>> NUMA nodes can be specified using the following command line option
>>
>> numa=fake=
>>
>> node range is of the format ,,...
>>
>> Each of the rangeX parameter
Arnd Bergmann wrote:
> On Friday 07 December 2007, Balbir Singh wrote:
>> Here's a dumb simple implementation of fake NUMA nodes for PowerPC. Fake
>> NUMA nodes can be specified using the following command line option
>>
>> numa=fake=
>>
>> node range is of the format ,,...
>
> Excellent idea! I'd
Kumar Gala wrote:
>
> On Dec 7, 2007, at 4:12 PM, Balbir Singh wrote:
>
>> Kumar Gala wrote:
>>>
>>> On Dec 7, 2007, at 3:35 PM, Balbir Singh wrote:
>>>
Olof Johansson wrote:
> Hi,
>
> On Sat, Dec 08, 2007 at 02:44:25AM +0530, Balbir Singh wrote:
>
>> Comments are as alwa
On Dec 7, 2007, at 4:12 PM, Balbir Singh wrote:
> Kumar Gala wrote:
>>
>> On Dec 7, 2007, at 3:35 PM, Balbir Singh wrote:
>>
>>> Olof Johansson wrote:
Hi,
On Sat, Dec 08, 2007 at 02:44:25AM +0530, Balbir Singh wrote:
> Comments are as always welcome!
Care to expl
Kumar Gala wrote:
>
> On Dec 7, 2007, at 3:35 PM, Balbir Singh wrote:
>
>> Olof Johansson wrote:
>>> Hi,
>>>
>>> On Sat, Dec 08, 2007 at 02:44:25AM +0530, Balbir Singh wrote:
>>>
Comments are as always welcome!
>>>
>>> Care to explain what this is useful for? (Not saying it's a stupid idea,
Arnd Bergmann wrote:
> On Friday 07 December 2007, Balbir Singh wrote:
>> Balbir Singh wrote:
>>> Geert Uytterhoeven wrote:
On Sat, 8 Dec 2007, Balbir Singh wrote:
> + if (strstr(p, "fake="))
> + cmdline = p + 5;/* 5 is faster than strlen("fake=") */
Really? My
On Friday 07 December 2007, Balbir Singh wrote:
> Here's a dumb simple implementation of fake NUMA nodes for PowerPC. Fake
> NUMA nodes can be specified using the following command line option
>
> numa=fake=
>
> node range is of the format ,,...
Excellent idea! I'd love to have this in RHEL5u1,
On Friday 07 December 2007, Balbir Singh wrote:
> Balbir Singh wrote:
> > Geert Uytterhoeven wrote:
> >> On Sat, 8 Dec 2007, Balbir Singh wrote:
> >>> + if (strstr(p, "fake="))
> >>> + cmdline = p + 5;/* 5 is faster than strlen("fake=") */
> >> Really? My gcc is smart enough to
On Dec 7, 2007, at 3:35 PM, Balbir Singh wrote:
> Olof Johansson wrote:
>> Hi,
>>
>> On Sat, Dec 08, 2007 at 02:44:25AM +0530, Balbir Singh wrote:
>>
>>> Comments are as always welcome!
>>
>> Care to explain what this is useful for? (Not saying it's a stupid
>> idea,
>> just wondering what the
Balbir Singh wrote:
> Geert Uytterhoeven wrote:
>> On Sat, 8 Dec 2007, Balbir Singh wrote:
>>> + if (strstr(p, "fake="))
>>> + cmdline = p + 5;/* 5 is faster than strlen("fake=") */
>> Really? My gcc is smart enough to replace the `strlen("fake=")' by 5, even
>> without -O.
>>
>
Geert Uytterhoeven wrote:
> On Sat, 8 Dec 2007, Balbir Singh wrote:
>> +if (strstr(p, "fake="))
>> +cmdline = p + 5;/* 5 is faster than strlen("fake=") */
>
> Really? My gcc is smart enough to replace the `strlen("fake=")' by 5, even
> without -O.
>
Thanks for pointing th
Olof Johansson wrote:
> Hi,
>
> On Sat, Dec 08, 2007 at 02:44:25AM +0530, Balbir Singh wrote:
>
>> Comments are as always welcome!
>
> Care to explain what this is useful for? (Not saying it's a stupid idea,
> just wondering what the reason for doing it is).
>
In my case, I use it to test part
On Sat, 8 Dec 2007, Balbir Singh wrote:
> + if (strstr(p, "fake="))
> + cmdline = p + 5;/* 5 is faster than strlen("fake=") */
Really? My gcc is smart enough to replace the `strlen("fake=")' by 5, even
without -O.
With kind regards,
Geert Uytterhoeven
Software Architect
Hi,
On Sat, Dec 08, 2007 at 02:44:25AM +0530, Balbir Singh wrote:
> Comments are as always welcome!
Care to explain what this is useful for? (Not saying it's a stupid idea,
just wondering what the reason for doing it is).
> diff -puN arch/powerpc/mm/numa.c~ppc-fake-numa-easy arch/powerpc/mm/num
Here's a dumb simple implementation of fake NUMA nodes for PowerPC. Fake
NUMA nodes can be specified using the following command line option
numa=fake=
node range is of the format ,,...
Each of the rangeX parameters is passed using memparse(). I find the patch
useful for fake NUMA emulation on
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