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" <[EMAIL PROTECTED]> > To: "'Asterisk Users Mailing List - Non-Commercial Discussion'" > <[email protected]> > 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:[EMAIL PROTECTED] > > Sent: Wednesday, September 07, 2005 4:59 PM > > To: [email protected] > > 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 | [EMAIL PROTECTED] | VIM is > > http://tzafrir.org.il | | a Mutt's > > [EMAIL PROTECTED] | | best > > ICQ# 16849755 | | friend > > > > _______________________________________________ > > --Bandwidth and Colocation sponsored by Easynews.com -- > > > > Asterisk-Users mailing list > > [email protected] > > http://lists.digium.com/mailman/listinfo/asterisk-users > > To UNSUBSCRIBE or update options visit: > > http://lists.digium.com/mailman/listinfo/asterisk-users > > _______________________________________________ > --Bandwidth and Colocation sponsored by Easynews.com -- > > Asterisk-Users mailing list > [email protected] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
