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Old 07-25-2008, 03:07 PM
Account for Debian group mail
 
Default Dual Core processor ?

Hello,

I'm in the process of replacing one of our mail servers with a new
machine. Is Debian stable enough on the Intel or AMD dual core 64 bit
processors for a mail server?

This machine will get heavy use and runs hard for 24 hrs a day.

Any suggestion for something fast but very stable?

Thanks,

Ken


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Old 07-25-2008, 03:12 PM
Thierry Chatelet
 
Default Dual Core processor ?

On Friday 25 July 2008 17:07:23 Account for Debian group mail wrote:
> Hello,
>
> I'm in the process of replacing one of our mail servers with a new
> machine. Is Debian stable enough on the Intel or AMD dual core 64 bit
> processors for a mail server?
>
> This machine will get heavy use and runs hard for 24 hrs a day.
>
> Any suggestion for something fast but very stable?
>
> Thanks,
>
> Ken

Processor will be no problem, but you have to choose the motherboard carefully
to be able to run stable, ie: newer chipset (ethernet..) may not work with
etch. Now lenny (testing) is going to stable in 2 month or so. Your choice...


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Old 07-25-2008, 04:14 PM
Carl Fink
 
Default Dual Core processor ?

On Fri, Jul 25, 2008 at 08:07:23AM -0700, Account for Debian group mail wrote:
>
> Hello,
>
> I'm in the process of replacing one of our mail servers with a new
> machine. Is Debian stable enough on the Intel or AMD dual core 64 bit
> processors for a mail server?
>
> This machine will get heavy use and runs hard for 24 hrs a day.
>
> Any suggestion for something fast but very stable?

I've been running Debian Lenny on a dual-core AMD processor (admittely a
laptop, not a server-grade system) for months now with a total of zero
crashes. Some problems, but not hardware or distro-related.
--
Carl Fink nitpicking@nitpicking.com

Read my blog at blog.nitpicking.com. Reviews! Observations!
Stupid mistakes you can correct!


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Old 07-26-2008, 01:21 AM
Andrew Reid
 
Default Dual Core processor ?

On Friday 25 July 2008 11:07, Account for Debian group mail wrote:
> Hello,
>
> I'm in the process of replacing one of our mail servers with a new
> machine. Is Debian stable enough on the Intel or AMD dual core 64 bit
> processors for a mail server?
>
> This machine will get heavy use and runs hard for 24 hrs a day.
>
> Any suggestion for something fast but very stable?

I run a few multi-terrabyte file servers and a couple of
application servers with two dual-core 64-bit chips per box,
and it's been rock-solid running "etch", with a few minor
caveats:

- Watch the hardware -- "etch" is getting kind of old.
I've had smooth sailing with Tyan motherboards, but of course
my experience is anecdotal. "Server class" motherboards tend
to be pretty conservative and have better standards compliance
than "consumer class" motherboards, but you should still be careful.

- For certain nVidia chipsets in combination with large XFS
file systems, you need to boot with "iommu=soft" in order
to avoid (infrequent) random filesystem errors. See the
Debian "etch" release notes for details.

The server world seems to me to be Linux in general and Debian
in particular's strong suit.
-- A.
--
Andrew Reid / reidac@bellatlantic.net


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Old 07-26-2008, 11:41 AM
Ron Johnson
 
Default Dual Core processor ?

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 07/25/08 20:21, Andrew Reid wrote:
[snip]
>
> - For certain nVidia chipsets in combination with large XFS
> file systems, you need to boot with "iommu=soft" in order
> to avoid (infrequent) random filesystem errors. See the
> Debian "etch" release notes for details.

I don't see this mentioned in the i386 notes. Does it only affect
AMD64? And, specifically, AMD chips?
http://www.mail-archive.com/debian-bugs-rc@lists.debian.org/msg97076.html

Also, has it been fixed in later kernels?

Lastly, what, in this instance, is "large"?

- --
Ron Johnson, Jr.
Jefferson LA USA

"Kittens give Morbo gas. In lighter news, the city of New New
York is doomed."
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Old 07-27-2008, 03:07 PM
Andrew Reid
 
Default Dual Core processor ?

On Saturday 26 July 2008 07:41, Ron Johnson wrote:
> On 07/25/08 20:21, Andrew Reid wrote:
> [snip]
>
> > - For certain nVidia chipsets in combination with large XFS
> > file systems, you need to boot with "iommu=soft" in order
> > to avoid (infrequent) random filesystem errors. See the
> > Debian "etch" release notes for details.
>
> I don't see this mentioned in the i386 notes. Does it only affect
> AMD64? And, specifically, AMD chips?
> http://www.mail-archive.com/debian-bugs-rc@lists.debian.org/msg97076.html

That's the one -- you're right that it's apparently only a 64-bit
problem, I hadn't appreciated that, since all my servers are 64-bit
at this point.

I found it here:
http://www.debian.org/releases/stable/amd64/release-notes/ch-information.en.html#s-nvidia-iommu
... and it's the same one.


> Also, has it been fixed in later kernels?

The bugzilla page for kernel bug <A
HREF="http://bugzilla.kernel.org/show_bug.cgi?id=7768">#7768</A>
says it's closed and resolved by code_fix, so apparently has been
fixed, although one would have to dig deeper to say in which
version the fix first appeared.

> Lastly, what, in this instance, is "large"?

I was having this problem intermittently with a cron-triggered rsync
backup on a 4.2TB software RAID6 array hosting an xfs filesystem that
was 80% full. The problem seemed to appear around the time the filesystem
crossed the 80% threshold, so "large" might mean 3.2 TB or so.

Booting with "iommu=soft" made the problem go away, with no
evident loss of server performance.

-- A.
--
Andrew Reid / reidac@bellatlantic.net


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Old 07-27-2008, 03:37 PM
Thomas Preud'homme
 
Default Dual Core processor ?

Le vendredi 25 juillet 2008, Thierry Chatelet a écrit*:
> On Friday 25 July 2008 17:07:23 Account for Debian group mail wrote:
> > Hello,
> >
> > I'm in the process of replacing one of our mail servers with a new
> > machine. Is Debian stable enough on the Intel or AMD dual core 64
> > bit processors for a mail server?
> >
> > This machine will get heavy use and runs hard for 24 hrs a day.
> >
> > Any suggestion for something fast but very stable?
> >
> > Thanks,
> >
> > Ken
>
> Processor will be no problem, but you have to choose the motherboard
> carefully to be able to run stable, ie: newer chipset (ethernet..)
> may not work with etch. Now lenny (testing) is going to stable in 2
> month or so. Your choice...

Not that etch-and-a-half purpose is precisely to get new driver in etch
so take a look at release notes of etch-and-a-half :

http://www.debian.org/releases/etch/etchnhalf

--
Why Debian : http://www.debian.org/intro/why_debian
 
Old 08-05-2008, 06:53 PM
"hhding.gnu"
 
Default Dual Core processor ?

Account for Debian group mail wrote:

Hello,

I'm in the process of replacing one of our mail servers with a new
machine. Is Debian stable enough on the Intel or AMD dual core 64 bit
processors for a mail server?

This machine will get heavy use and runs hard for 24 hrs a day.

Any suggestion for something fast but very stable?

Thanks,

Ken



Yes, you can run etch without any problem. Most the server support
debian etch as I tested.


And, lenny will be stable in september. :-)


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Old 08-06-2008, 01:54 PM
"Carlos Williams"
 
Default Dual Core processor ?

On Tue, Aug 5, 2008 at 2:53 PM, hhding.gnu <hhding.gnu@gmail.com> wrote:
> Account for Debian group mail wrote:
>>
>> Hello,
>>
>> I'm in the process of replacing one of our mail servers with a new
>> machine. Is Debian stable enough on the Intel or AMD dual core 64 bit
>> processors for a mail server?
>>
>> This machine will get heavy use and runs hard for 24 hrs a day.
>>
>> Any suggestion for something fast but very stable?
>>
>> Thanks,
>>
>> Ken

I am running my company email server (Postfix) on 2xDual Core Intel
Xeon CPU's and 6GB's of RAM. The server runs perfect and have had no
issues what so ever. I am running Etch and have about 400 users on the
email server. You should have no problems what so ever. I have never
used AMD in an enterprise environment.


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