is linux really better at multiple core processors?

[tgpraveen]

someone told me that multiple core like dual core etc are supported right now also in linux and the performance goes up a lot in linu xthan in windows with thsi type of processors.
Is this true and if so how?

 

[gxsaurav]

More performance in Multiple core CPU: Not unless u compile the kernel & applications according to the CPU

Multiple CPU : Yup

 

[praka123]

someone told me that multiple core like dual core etc are supported right now also in linux and the performance goes up a lot in linu xthan in windows with thsi type of processors.
Is this true and if so how?

Linux supports smp long time before itself.u need to get a distro with x86_64 tagged means it got a kernel compiled and optimized for 64-bit PC's.it works fine.
for eg:Ubuntu 64-bit u can download

 

[tgpraveen]

so u mean say ubuntu 7.04 will have no performance diff between a single core and dual core processor if i use the default install without any tweaking or compiling.

 

[gxsaurav]

It will have for sure. I guess Prakash doesn't know the difference between 2 physical CPUs & a dual core CPU. You need to compile kernel AFAIK to use the dual core functionality or atleast install an optimised kernel. Also, enable hyperthreading.

 

[tgpraveen]

^^^^^
is there no distro which is by itself potimised for dual core and has hyper threading enable by default

coz the thing is i am not very comfortable with compiling etc

 

[ilugd]

right. I have a dual core e2140 cpu. will the 64 bit version work on that.

 

[gxsaurav]

^^^ if it is Core 2 Duo then yes

is there no distro which is by itself potimised for dual core and has hyper threading enable by default

Ask the linux guys.

 

[Faun]

have a look
*search.techrepublic.com.com/search/Linux+and+multi-core.html

 

[praka123]

It will have for sure. I guess Prakash doesn't know the difference between 2 physical CPUs & a dual core CPU. You need to compile kernel AFAIK to use the dual core functionality or atleast install an optimised kernel. Also, enable hyperthreading.

care to hear what smp is symmetric muti processing.it is there from old days from ibm server time.also all kernels nowadays come with smp enabled in kernel-which means support for dual core/hyper threading.
there are dual-cpus used before c2d came.I have compiled kernel myself several times.there are lot of "modding" which can be done to optimize performance.an example is/was ck
patches from Con Kolivas.
The kernel does offer in processor feature section to make it optimized for c2d,amd or via,cyrix,arm etc.
So the generalized solution for 64-bit users is to use Ubuntu or any distro which is compile for 64-bit performance.
see below page for correct option.
*www.ubuntu.com/getubuntu/download
and also let you know there are many pre-compiled kernels available in debian or ubuntu repositories which u can install via apt after the install.

 

[gxsaurav]

there are dual-cpus used before c2d came.I have compiled kernel myself several times.there are lot of "modding" which can be done to optimize performance.

Thats what I said, dual core optimisation in Linux kernel is there, just not be default
*www.ubuntu.com/getubuntu/download

and also let you know there are many pre-compiled kernels available in debian or ubuntu repositories which u can install via apt after the install.

Again what I said before.

 

[Pathik]

right. I have a dual core e2140 cpu. will the 64 bit version work on that.

yup it ll...

 

[praka123]

anyways a "lean" kernel is the "fastest" kernel(not necessarily always).
but when u get gdm within 20 sec from bootup,it is an achievement .but Gnome/kde adds more time though.

 

[infra_red_dude]

Thats what I said, dual core optimisation in Linux kernel is there, just not be default

almost all of the distros haf smp support in kernel by default! only 32 and 64bit are discrete distro versions. i mean, if u want 64bit support then you'll hafta install the 64bit version, which is optimised out of the box for 64bit.