[NBLUG/talk] thought I'd ask here also - Anyone have any experience with LTSP?

Omar Eljumaily omar at omnicode.com
Mon Jan 26 12:03:45 PST 2015


I think that whatever nproc reports is what should be used.  I can't 
imagine a system that wouldn't take advantage of additional processor 
cores when fork is called.

Recognizing the cores is another thing.  I've had problems with Ubuntu 
14 not recognizing cores.

Omar


On 1/26/2015 9:17 AM, gandalf at sonic.net wrote:
> Which is configured for 256 cpus.
>
> On 2015-01-24 21:24, Walter Hansen wrote:
>> It's running Ubuntu 12.
>>
>> On 1/24/2015 9:39 AM, Lincoln Peters wrote:
>>> Maybe I missed the answer, but what distro and what version?  If it's
>>> running an older kernel, it may not be taking full advantage of all of
>>> the CPU's.
>>>
>>> A few weeks ago I was testing out some similarly powerful machines (20
>>> hyperthreaded CPU's and 32GB RAM) with different versions of CentOS,
>>> and I discovered that the kernel that comes with CentOS 5.x (which
>>> some of our customers still use) struggles to take advantage of lots
>>> of cores.  On CentOS 6.5 and 7.0 I could easily get 40 CPU-intensive
>>> processes to run at near 100% utilization, but on CentOS 5 each
>>> process seemed to top out at 25% (and load average was comparable to
>>> the newer OS'es).
>>>
>>> On Fri, Jan 23, 2015 at 2:19 PM,  <gandalf at sonic.net> wrote:
>>>>
>>>> I'm seeing very high load averages with low CPU usage. The two main 
>>>> culprits
>>>> are chrome and firefox. I've got about a hundred users sharing the 
>>>> LTSP
>>>> server which has some rich resources (24cpus and 128gigs).
>>>>
>>>>
>>>>
>>>>
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>>>
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