Date: Wed, 2 May 2007 16:43:44 +0100To 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.
From: Daniel J Blueman <daniel.blueman@xxxxxxxxx>
To: Rajib Majumder <rajibm2005@xxxxxxxxx>
Cc: Linux Kernel <linux-kernel@xxxxxxxxxxxxxxx>
Subject: Re: Kernel Scalability
Resent-Date: Wed, 02 May 2007 17:44:58 +0200
Resent-From: <l.genoni@xxxxxx>
On 2 May, 14:00, "Rajib Majumder" <rajibm2005@xxxxxxxxx> 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 appreciated.
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 patches being developed to improve pagecache
scalability lately too, but I guess it all depends on what kind of
workload you have...