Re: Kernel Scalability

2007-05-04 Thread Christoph Lameter
On Wed, 2 May 2007, [EMAIL PROTECTED] wrote: > To stay on systems probably more familiar to the user who asked this question, > there are also some 64 core X86_64 bot AMD and Intel out there, here the 2.6 > kernel is doing very well even on those intel CPU with shared L2 cache. > I have some 16

Re: Kernel Scalability

2007-05-04 Thread Christoph Lameter
On Wed, 2 May 2007, Kevin Fox wrote: > There are multiple 512 processor altix's in production. :) U.. There are also 1k configurations. 4k in testing. Expect 16k sometime this year. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL

Re: Kernel Scalability

2007-05-04 Thread Christoph Lameter
On Wed, 2 May 2007, Kevin Fox wrote: There are multiple 512 processor altix's in production. :) U.. There are also 1k configurations. 4k in testing. Expect 16k sometime this year. - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL

Re: Kernel Scalability

2007-05-04 Thread Christoph Lameter
On Wed, 2 May 2007, [EMAIL PROTECTED] wrote: To stay on systems probably more familiar to the user who asked this question, there are also some 64 core X86_64 bot AMD and Intel out there, here the 2.6 kernel is doing very well even on those intel CPU with shared L2 cache. I have some 16 and

Re: Kernel Scalability

2007-05-02 Thread William Lee Irwin III
On Wed, 2 May 2007, Daniel J Blueman wrote: >> There are 128-processor IA64 systems which run recent 2.6 kernels out >> there; the per-processor counters, RCU and page-fault scalability work >> has been instrumental to the necessary scaling for decent resource >> usage on these. >> IIRC, there

Re: Kernel Scalability

2007-05-02 Thread Kevin Fox
There are multiple 512 processor altix's in production. :) Kevin On Wed, 2007-05-02 at 20:56 +0800, Rajib Majumder wrote: > Hi, > > I am wondering if 2.4.x/2.6.x kernel is scalable enough to run on > 8-CPU hardware. Do we have any scalability comparison data between > 2.4/2.6 kernels and beyond

Re: Kernel Scalability

2007-05-02 Thread Eric W. Biederman
"Rajib Majumder" <[EMAIL PROTECTED]> writes: > Hi, > > I am wondering if 2.4.x/2.6.x kernel is scalable enough to run on > 8-CPU hardware. Do we have any scalability comparison data between > 2.4/2.6 kernels and beyond 4-CPU? > > If yes, is the scalablity is near linear? I haven't a clue what

Re: Kernel Scalability

2007-05-02 Thread l . genoni
On Wed, 2 May 2007, Daniel J Blueman wrote: Date: Wed, 2 May 2007 16:43:44 +0100 From: Daniel J Blueman <[EMAIL PROTECTED]> To: Rajib Majumder <[EMAIL PROTECTED]> Cc: Linux Kernel Subject: Re: Kernel Scalability Resent-Date: Wed, 02 May 2007 17:44:58 +0200 Resent-From: <[

Re: Kernel Scalability

2007-05-02 Thread Tony Luck
On 5/2/07, Daniel J Blueman <[EMAIL PROTECTED]> wrote: There are 128-processor IA64 systems which run recent 2.6 kernels out there; the per-processor counters, RCU and page-fault scalability work has been instrumental to the necessary scaling for decent resource usage on these. 128 cpu is a

Re: Kernel Scalability

2007-05-02 Thread Daniel J Blueman
On 2 May, 14:00, "Rajib Majumder" <[EMAIL PROTECTED]> wrote: Hi, I am wondering if 2.4.x/2.6.x kernel is scalable enough to run on 8-CPU hardware. Do we have any scalability comparison data between 2.4/2.6 kernels and beyond 4-CPU? If yes, is the scalablity is near linear? Any input is

Kernel Scalability

2007-05-02 Thread Rajib Majumder
Hi, I am wondering if 2.4.x/2.6.x kernel is scalable enough to run on 8-CPU hardware. Do we have any scalability comparison data between 2.4/2.6 kernels and beyond 4-CPU? If yes, is the scalablity is near linear? Any input is appreciated. Thanks Rajib - To unsubscribe from this list: send

Kernel Scalability

2007-05-02 Thread Rajib Majumder
Hi, I am wondering if 2.4.x/2.6.x kernel is scalable enough to run on 8-CPU hardware. Do we have any scalability comparison data between 2.4/2.6 kernels and beyond 4-CPU? If yes, is the scalablity is near linear? Any input is appreciated. Thanks Rajib - To unsubscribe from this list: send

Re: Kernel Scalability

2007-05-02 Thread Daniel J Blueman
On 2 May, 14:00, Rajib Majumder [EMAIL PROTECTED] wrote: Hi, I am wondering if 2.4.x/2.6.x kernel is scalable enough to run on 8-CPU hardware. Do we have any scalability comparison data between 2.4/2.6 kernels and beyond 4-CPU? If yes, is the scalablity is near linear? Any input is

Re: Kernel Scalability

2007-05-02 Thread Tony Luck
On 5/2/07, Daniel J Blueman [EMAIL PROTECTED] wrote: There are 128-processor IA64 systems which run recent 2.6 kernels out there; the per-processor counters, RCU and page-fault scalability work has been instrumental to the necessary scaling for decent resource usage on these. 128 cpu is a bit

Re: Kernel Scalability

2007-05-02 Thread l . genoni
On Wed, 2 May 2007, Daniel J Blueman wrote: Date: Wed, 2 May 2007 16:43:44 +0100 From: Daniel J Blueman [EMAIL PROTECTED] To: Rajib Majumder [EMAIL PROTECTED] Cc: Linux Kernel linux-kernel@vger.kernel.org Subject: Re: Kernel Scalability Resent-Date: Wed, 02 May 2007 17:44:58 +0200 Resent-From

Re: Kernel Scalability

2007-05-02 Thread Kevin Fox
There are multiple 512 processor altix's in production. :) Kevin On Wed, 2007-05-02 at 20:56 +0800, Rajib Majumder wrote: Hi, I am wondering if 2.4.x/2.6.x kernel is scalable enough to run on 8-CPU hardware. Do we have any scalability comparison data between 2.4/2.6 kernels and beyond

Re: Kernel Scalability

2007-05-02 Thread Eric W. Biederman
Rajib Majumder [EMAIL PROTECTED] writes: Hi, I am wondering if 2.4.x/2.6.x kernel is scalable enough to run on 8-CPU hardware. Do we have any scalability comparison data between 2.4/2.6 kernels and beyond 4-CPU? If yes, is the scalablity is near linear? I haven't a clue what the data

Re: Kernel Scalability

2007-05-02 Thread William Lee Irwin III
On Wed, 2 May 2007, Daniel J Blueman wrote: There are 128-processor IA64 systems which run recent 2.6 kernels out there; the per-processor counters, RCU and page-fault scalability work has been instrumental to the necessary scaling for decent resource usage on these. IIRC, there were some