Prev: Stop Wi-Fi LED blinking
Next: What is the best recent kernel
From: Ignoramus30064 on 9 Jul 2010 22:26
On 2010-07-10, John Hasler <jhasler(a)newsguy.com> wrote:
> Ignoramus30064 wrote:
>> We have a server with 12 processors (one of those things with two
>> physical processors with 6 cores each). Ubuntu, by default, sees only
>> 8 CPUs. (this applies to any version, but this is specifically 8.04).
>
> If you don't know how to compile a custom kernel you should not be
> administering such a machine.

Great idea.

I was eventually able to compile a custom kernel.

> However, passing the kernel "maxcpus=12" on the command line should
> suffice.

I believe that it can only reduce the number of CPUs available, not
increase. I will try to double check that.

i
From: Ignoramus30064 on 9 Jul 2010 22:26
On 2010-07-10, mjt <myswtestYOURSHOES(a)gmail.com> wrote:
> On Fri, 09 Jul 2010 20:03:32 -0500
> John Hasler <jhasler(a)newsguy.com> wrote:
>
>> Ignoramus30064 wrote:
>> > We have a server with 12 processors (one of those things with two
>> > physical processors with 6 cores each). Ubuntu, by default, sees
>> > only 8 CPUs. (this applies to any version, but this is specifically
>> > 8.04).
>>
>> If you don't know how to compile a custom kernel you should not be
>> administering such a machine. However, passing the kernel
>> "maxcpus=12" on the command line should suffice.
>
> Bingo.
>
> Relates back to my opinion about using a serious, corporate level
> server distro.
>

But what does it mean, serious, corporate level distro?

i
From: Ignoramus30064 on 9 Jul 2010 22:42
On 2010-07-10, Ignoramus30064 <ignoramus30064(a)NOSPAM.30064.invalid> wrote:
> On 2010-07-10, John Hasler <jhasler(a)newsguy.com> wrote:
>> Ignoramus30064 wrote:
>>> We have a server with 12 processors (one of those things with two
>>> physical processors with 6 cores each). Ubuntu, by default, sees only
>>> 8 CPUs. (this applies to any version, but this is specifically 8.04).
>>
>> If you don't know how to compile a custom kernel you should not be
>> administering such a machine.
>
> Great idea.
>
> I was eventually able to compile a custom kernel.
>
>> However, passing the kernel "maxcpus=12" on the command line should
>> suffice.
>
> I believe that it can only reduce the number of CPUs available, not
> increase. I will try to double check that.

I was right. setting maxcpus=12 does not increase the number of
available cpus. Your advice, unfortunately, was not correct.

i
From: John Hasler on 9 Jul 2010 22:45
mjt writes:
> Relates back to my opinion about using a serious, corporate level
> server distro.

"Serious, corporate level server distributions" are for placating
checkbox-checking PHB's. Plain Debian/Stable suffices for competent
admins (actually Slackware would suffice but why make extra work for
yourself?)
--
John Hasler
jhasler(a)newsguy.com
Dancing Horse Hill
Elmwood, WI USA
From: Ignoramus30064 on 9 Jul 2010 23:10
On 2010-07-10, John Hasler <jhasler(a)newsguy.com> wrote:
> mjt writes:
>> Relates back to my opinion about using a serious, corporate level
>> server distro.
>
> "Serious, corporate level server distributions" are for placating
> checkbox-checking PHB's. Plain Debian/Stable suffices for competent
> admins (actually Slackware would suffice but why make extra work for
> yourself?)

I think that Ubuntu Server LTS is serious, corporate level, etc.

i
First  |  Prev  |  Next  |  Last
Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13
Prev: Stop Wi-Fi LED blinking
Next: What is the best recent kernel