30 Oct
2004
30 Oct
'04
4:59 p.m.
Hi,
I have a few linux servers which in /proc/cpuinfo shows the number of cpu's,
on some servers, however I have only one cpu but top and /proc/cpuinfo
show's two. Any idea why does it show like this and what is a correct way
for analysing how many CPU's are present on the system. Does this happen on
only certain hardware, as I have noticed this on my SuperMicro and HP
servers only.
Thanks in advance...
Regards,
Keith
31 Oct
31 Oct
2:56 a.m.
On 30/10/04 16:59 +0530, Keith Fernandez wrote:
I have a few linux servers which in /proc/cpuinfo
shows the number of cpu's,
on some servers, however I have only one cpu but top and /proc/cpuinfo
show's two. Any idea why does it show like this and what is a correct way
Hyperthreading. Two cores on a single die.
Devdas Bhagat
10:35 a.m.
--- Devdas Bhagat <devdas(a)dvb.homelinux.org> wrote:
Hyperthreading. Two cores on a single die.
[snip]
Very true.
Also, the older kernels used to have not so efficient
queue management with respect to Hyper threaded cpu's.
Atleast, that was what i learned. Only in the later
(2.4x and 2.6x)kernels has paralell queue management
been made highly scalable with respect to
x86(32+64bit) arch.
Trevor
Devdas Bhagat
=====
|------|____________________________________|------|
( >- / Scaling FreeSoftware & OpenSource \ -< )
/~\ / In the Enterprise \ /~\
| \) \ | www.fsf.org | www.opensource.org | / (/ |
|_|_ \____________________________________/ _|_|
__________________________________
Do you Yahoo!?
Y! Messenger - Communicate in real time. Download now.
http://messenger.yahoo.com
6977
days inactive
6978
days old
2 comments
3 participants
participants (3)
-
Devdas Bhagat -
Keith Fernandez -
Trevor Warren