Multiprocessor system VS one processor system

[Simon]

What exactly is not easily achievable with a modern dual Xeon Intel server
with 20 modern SCSI harddrives and proper RAID card? that is on an old
E450 Sparc? have you personally done any testing to back this up? surely,
the chipset design of Intel boards are not up-to-par with latest Sun servers,
but Intel is catching up. There was just never enough demand until now.

-Simon


On Thu, 18 Mar 2004 23:59:12 +0100 (CET), Olaf Hoyer wrote:

>On Tue, 16 Mar 2004, Simon wrote:
>
>>
>> Sounds like a cool feature. What detects/monitors the CPUs to spot any problems
>> and mark them offline at the next reboot? is this a feature of FreeBSD or motherboards
>> you use? I have never heard of anything like this on Intel based servers, before.
>>
>Hi!
>
>No, its a feature of a real "Server"-Mainboard.
>
>Standard feature in real iron, meaning non-i386 based.
>
>I hava @work lots of suns sitting around, that also get beaten and
>(ab)used quite a lot, and then, we also have some share of defective
>CPU's a year. But... the things an old 450 with 400 MHz CPUs and 20
>HDD's stacked  will do
>I/O-Wise, is not easily achievable with some modern dual-Xeon Server.
>
>in Intel world, I rarely experienced flaky CPU, but these i386 boxes are
>rarely loaded to the load a Solaris/Sparc box can take, in most cases
>the Intel box simply runs out of I/O-possibilities.
>
>I have some boxes here, that never go below 1000 procs simultaneously.
>So a load of 10 or so is normal there. (Ok, they have more than 4 CPU,
>though)
>
>
>> PS: then again, I never had a CPU fail after it passed DOA, maybe I haven't gone
>> through enough CPUs, yet.
>Well, in i386 world, CPUs are mostly only going south when cooling is
>bad, or you get some current spikes or so, with real iron, that is being
>really beaten up, you have this more often.
>But real iron also remains in production use for more that 3 years...
>
>
>
>Just my 0.02 Euro on this
>Olaf
>-- 
>Olaf Hoyer        ohoyer at gaff.hhhr.ision.net
>Fuerchterliche Erlebniss geben zu raten,
>ob der, welcher sie erlebt, nicht etwas Fuerchterliches ist.
>(Nietzsche, Jenseits von Gut und Boese)
>