Linked by Thom Holwerda on Mon 13th Feb 2006 17:57 UTC, submitted by MaxxTotal
Intel Just as the bragging rights for dual-core chip supremacy are dying down, Intel gave the first glimpse of a quad-core chip coming next year. Clovertown, a four-core processor, will start shipping to computer manufacturers late this year and hit the market in early 2007. Clovertown will be made for dual-processor servers, which means that these servers will essentially be eight-processor servers. The company will also come out with a previously announced version called Tigerton around the same time for servers with four or more processors.
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Windows and Multi-Core
by tony on Mon 13th Feb 2006 20:34 UTC
tony
Member since:
2005-07-06

Oddly enough, I found that Windows XP responsiveness improved to a much greater degree with dual core than Linux did (I also had to re-compile the kernel initially, the Ubuntu kernel didn't recognize dual processors, an issue noted in the Ubuntu forums).

The improvement came when an application would churn, burning up 100% of the CPU for a specific task. Playing Quake 4, Outlook throwing a fit, a badly written app going bonkers. With a single core the system would be slow and sluggish. With dual cores, I could still switch to other applications and have responsiveness almost as good as when the system was idle, since it's only churning 100% of a single core, and the other core ready to take on my workload.

Dual core certainly helps out on Linux systems, but for desktop applications, the difference wasn't as dramatic in terms of overall system responsiveness.

Reply Score: 2

RE: Windows and Multi-Core
by voidlogic on Mon 13th Feb 2006 22:30 in reply to "Windows and Multi-Core"
voidlogic Member since:
2005-09-03

"Oddly enough, I found that Windows XP responsiveness improved to a much greater degree with dual core than Linux did (I also had to re-compile the kernel initially, the Ubuntu kernel didn't recognize dual processors, an issue noted in the Ubuntu forums)."

Many people think this is a ubuntu issue; however, it is due to the fact the deafult i386 kernel is not SMP enabled! If you are using a modern intel cpu with hyperthreading, SMP (Multicore/processor), or SMT (hyperthreading) get the i686-smp kernel or for AMD get the k7-smp. The package manager makes this a snap, no compiling needed.

Reply Parent Score: 2

RE: Windows and Multi-Core
by Dark_Knight on Mon 13th Feb 2006 22:37 in reply to "Windows and Multi-Core"
Dark_Knight Member since:
2005-07-10

Tony,

Re: "Oddly enough, I found that Windows XP responsiveness improved to a much greater degree with dual core than Linux did. I also had to re-compile the kernel initially, the Ubuntu kernel didn't recognize dual processors, an issue noted in the Ubuntu forums."

From what you stated it's either a PEBKAC issue or that Ubuntu Linux did not correctly identify the processor on the motherboard as SMP capable. For example the kernel for SMP capable processors is installed when two or more processors are detected. Whether the processors are two single core processors like the older dual XEON and Opteron processors, Intel P4 with Hyperthreading enabled or the new dual core processors.

Regarding your performance comment comparing dual core processors with Windows XP Professional and a Linux distribution such as Ubuntu Linux. It's better to include with such comments a benchmark test that is cross platform capable such as SPECviewperf.

Edited 2006-02-13 22:42

Reply Parent Score: 2

RE: Windows and Multi-Core
by Tom Janowitz on Tue 14th Feb 2006 11:17 in reply to "Windows and Multi-Core"
Tom Janowitz Member since:
2005-12-05

It's probably linked to the fact, that Linux scheduler deals better with multiple threads than Windows scheduler. Two cores alleviate the innate bad (not as efficient) design of Windows kernel in more distinct manner, since Linux is already better suited for multiple application instances. There is simply a lot less to improve on in system responsiveness when adding second core on Linux, than it is on Windows.

Reply Parent Score: 1