Think we've all have hope the issue will go away, then wouldn't need to be on the wiki. :)
------------------------ > Rich, thank you so much for taking the time to patiently explain the > issue. > > I think this ought to be on the wiki for future newbies. > > Thanks. > > > > -----Original Message----- > > From: Rich Adamson [mailto:[EMAIL PROTECTED] > > Sent: Thursday, December 09, 2004 5:39 PM > > To: Asterisk Users Mailing List - Non-Commercial Discussion > > Subject: Re: [Asterisk-Users] four wildcards in a single pc > > > > > I have installed successfully more then four cards in a machine > before. > > > I had a firewall with eight network interfaces (one quad card, one > duo > > > and two singles) > > > I have machines with two dialogic boards, a pci display card, and a > > > network interface. > > > And I know I've had machines at home that had a display adaptor, > modem, > > > network, scsi, and soundblaster all together. > > > > > > Yet, people claim it won't work because of lack of IRQs, and that > it's > > > not related to Digium. > > > > > > What am I missing? > > > > There has been a lot of comments over the last 12 months or so > relative > > on this. The issue is _not_ the number of interrupts, but rather the > > ability of those interrupts to handle the flow of data across the bus > > _without_ injecting delay. That ability seems to be directly related > > to exactly how the interrupts are handled on _each_ motherboard, and > > seems to have some relationship to the pci support chips on the > > motherboard. > > > > There are plenty of implementations that _do_ share interrupts with > > absolutely no problems, and at least some of those are represented to > > be rather heavily loaded. > > > > There's also been a fair number of people that have had problems with > > the latest/fanciest/fastest system, and swapping out the motherboard > > with a 800 mhz P3 fixed their issues. What else actually changed > > during that swap? No one knows for sure, but supposedly nothing. > > > > The current list of symptoms/issues reads something like this: > > - processor speed has little/nothing to do with it > > - dual vs single processors has nothing to do with it > > - amount of ram, etc, has nothing to do with it > > - the linux distro in use has nothing to do with > > - digium cards expect a solid 1000 interrupts/second/card with no > > interrupt service latency > > - those heavily involved with audio (not voip audio) have known about > > pci & interrupt latency issues with certain motherboards. They seem > > to be more sensitive to the issues then * is. No one has found > > a list of what _they_ consider to be bad boards. > > - there is no consolidated list of what motherboards work vs don't > > partially due to the difficulty of describing boards from vendors > > (eg, Dell, HP), and in some cases, different boards used in the > > same model number of system. > > - if a particular motherboard has an issue, the problem typically > > appears as echo on pstn calls (one direction only) > > - there are no tools that anyone has written/found to help identify > > which systems/motherboards have issues > > - although some people represent that digium support is working on > > something, those words have been heard before and the problems > > still exist (at least for some). > > > > So, it seems the only _reliable_ answer to your question is to try it > > on whatever hardware you have available. > > > > > > > > _______________________________________________ > > 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 > > > > -- > > This message has been scanned for viruses and > > dangerous content by MailScanner, and is > > believed to be clean. > > MailScanner thanks transtec Computers for their support. > > > _______________________________________________ > 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 ---------------End of Original Message----------------- _______________________________________________ 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