[Asterisk-Users] Motherboard and processor recommendations
Domjan Attila
adomjan at tvnet.hu
Fri Sep 9 00:35:21 MST 2005
Hi,
I sucked the TE410 in a Siemens dual Xeon machine... lot of irq
problems, digium support said: try the card in another machine.
A cheap amd64 + via K8T800 and TE405 works perfectly...
On Fri, 2005-09-09 at 08:05 +0200, Clive wrote:
> Hi
>
> I discovered that most onboard raid controllers are really software
> raid, and it uses the cpu to perform raid functions.
>
> I am not sure how much extra load this introduces, but anyway, its
> still not ideal when you need your cpu for transcoding voip stuff.
>
> my 2c.
>
> regards
> Clive
>
> On 8 Sep 2005 at 12:01, Soner Tari wrote:
>
> > Thanks Tzafrir and canuck15 for your comments.
> >
> > Yes I don't think the NIC will be saturated, and I'll search the quality of
> > the Onboard RAID. I guess I have to learn more about canuck15's comments
> > though, because I am actually questioning what happens to the board when
> > you're adding onboard peripherals and whether that would create problems
> > with, say, Digium cards. I remember I've read comments on the list saying
> > that some chipsets/motherboards cannot handle the interrupt frequency that
> > Digium cards demand, thus miss some interrupts. So, even though a regular
> > desktop user would not notice any problems, an Asterisk server would suffer
> > a lot. But I'm afraid there is no rule of thumb on such matters (except Xeon
> > motherboards?).
> >
> > The load on the computer will never be too high, but my purpose in asking
> > about processor preference is that if there is any processor dependant dsp
> > routines (such as G729 codec), then I thought that I might have problems. As
> > another example, I don't know the details of the echocancelers on Asterisk
> > (all 5 of them), but perhaps their performance is more satisfactory on, say,
> > a P4 2.4 machine rather than, say, an AMD64, even though I'd expect AMD64 to
> > be a more powerful processor. So I am questioning code
> > compatibility/performance based on processor type rather than processor
> > load. If that's irrelevant, please disregard this question (I need to learn
> > more about dsp routines).
> >
> > Thanks again for your answers,
> > Soner
> >
> > ----- Original Message -----
> > From: "canuck15" <canuck15 at hotmail.com>
> > To: "'Asterisk Users Mailing List - Non-Commercial Discussion'"
> > <asterisk-users at lists.digium.com>
> > Sent: Thursday, September 08, 2005 3:46 AM
> > Subject: RE: [Asterisk-Users] Motherboard and processor recommendations
> >
> >
> > >
> > > Regarding Chipsets/Motherboards. I would stay FAR away from cheap ones.
> > > Any chipset/motherboard that electrically and logically separates some PCI
> > > slots (ie. interrupts) from onboard peripherals (network controller, VGA,
> > > USB etc.) makes compatibility issues with Digium cards much less likely.
> > > Many of the newer Intel chipsets do this.
> > >
> > > The Xeon chipsets/motherboards are the best IMHO because they usually have
> > > PCI-X slots connected directly to the memory controller hub, that you can
> > > put your Digium card(s) in, which are completely separate from the
> > > peripherals and PCI slots on the I/O controller hub.
> > >
> > > -----Original Message-----
> > > From: Tzafrir Cohen [mailto:tzafrir at cohens.org.il]
> > > Sent: Wednesday, September 07, 2005 4:59 PM
> > > To: asterisk-users at lists.digium.com
> > > Subject: Re: [Asterisk-Users] Motherboard and processor recommendations
> > >
> > > On Wed, Sep 07, 2005 at 11:02:58PM +0300, Soner Tari wrote:
> > >> Hi All,
> > >>
> > >> For sometime now I've been searching the wiki and googling, but I
> > >> think I'm missing some of the very important answers. So I'll have to
> > >> ask this to the list.
> > >>
> > >> I'm trying to decide on the right motherboard and processor. Here are
> > >> my
> > >> questions:
> > >>
> > >> 1. Would I have problems with all-onboard motherboards (Onboard VGA,
> > >> LAN/GLAN, Sound, SATA, RAID) ? I've read the comment about an Onboard
> > >> VGA on wiki.
> > >
> > > Considering the exceptional quality of graphics you'll need with Asterisk,
> > > and VGA-compatible adapter would suffice. The on-board one would be more
> > > than enough. Ditto for the sound card, at least in most cases.
> > >
> > > As for the network adapter: Are you going to get anything close to
> > > saturating the card? I figure that the efficiency of the network adapter
> > > and
> > > its driver will not be your bottleneck. Most of the WAN-oriented systems
> > > would have worked fine with an old 10Mbps card, probably without a
> > > noticable
> > > performance hit (right?).
> > >
> > > So their quality is not much of an issue. If you have the extra space, you
> > > can always add an extra one in an expansion slot. But it should not be
> > > required.
> > >
> > > An extra raid controller is something you may consider. But then-again, if
> > > it is a cheap software-based raid, it is practically the same as using
> > > linux
> > > for that (but with more problematic drivers). But it is for you to decide
> > > if
> > > it is worth the extra cost.
> > >
> > >>
> > >> 2. Which chipset should I prefer: Intel, SiS or VIA? I've read the old
> > >> SiS chipset problem on wiki.
> > >
> > > There is much voodoo about this. There are good and bad boards made with
> > > each of those chipsets. In fact, for practically each model of board that
> > > has been sold for over a month or so, you'll probably find someone in this
> > > list who had bad experience with it.
> > >
> > >>
> > >> 3. Which processor has the least support problems: P4 (478 or LGA775,
> > >> or even EMT64) or AMD64 ? For example, in G729 config file Athlon
> > >> comment reads as "untested" (so far I don't have problems), and there
> > >> is no config option for AMD64 at all. There is no mention of EMT64
> > >> either. Is anything processor dependant in codecs/transcoding, echo
> > >> cancellation, busy detect and similar software, i.e. in dsp routines in
> > > general ?
> > >
> > > First of all, what do you intend to do? Much transcoding? How many lines?
> > >
> > > Because if the load on the CPU will be light enough, than the CPU brand
> > > won't really matter, you know.
> > >
> > >> I think this is a very complicated issue, and given so many variables
> > >> perhaps luck plays an important part.
> > >
> > > I figure some people on this list will happily sell you pre-configured
> > > systems. Or at least pre-built ones.
> > >
> > > --
> > > Tzafrir Cohen | tzafrir at jbr.cohens.org.il | VIM is
> > > http://tzafrir.org.il | | a Mutt's
> > > tzafrir at cohens.org.il | | best
> > > ICQ# 16849755 | | friend
> > >
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