RE: [Asterisk-Users] Something every TDMP user should know
They instantly got us to look at the output of zttest and we found that this was (in their words) 'extremely low', with 'best' and'worst' readings of 99.975586% and 99.963379% respectively. Might want to give PCIlatency setting a try, it helped for me. My ZTTEST would drop occasionally to 99.95% until I set: setpci -v -s 01:01.0 latency_timer=ff --Digium PRI card setpci -v -s 01:04:0latency_timer=ff --Digium 401 4 X FXS setpci -v -s XX:XX:X latency_timer=0 --1 entry for every other PCI card in system from LSPCI output, modify XX:XX accordingly Before setpci I would get best in ZTTEST at 99.987793% and worst ~ 99.95% After setpci best is 100% and worst is 99.987793% consitient. I use SpanDSP to recieve faxes and before faxes were garbled and now they are OK (BTW, nowrecieving ~150 faxes a day 99.95% OK, so SpanDSP *does* work fine, you just have to set it up right. Ask me how.) I put the setpci statements in /etc/rc.d/rc.local before my modprobes to the Digium hardware and Asterisk startup. I'm using a 4-way Netfinity FC2 * 1.0 stable I dunno, maybe the community is being too hard on Digium about the design of the card. I can understand their perpective, it's brutal to make a card that has to have such tight tolerances and make it work acceptably on the huge variation in white box hardware (or black box, in your case). There's a page on the Wiki about motherboards that work well with installation notes but that's pointless since motherboards are such a moving target. Even the motherboard vendor screwing around with BIOS updates can invalidate that information. What I think is best for Asterisk implementation is for Digium to sell a motherboard. No, seriously. Find aECS or Abit or ASUS mobo that consitiently yields 100% or 99.% and white-box it as a barebones kit with a TXXX card. Sell it as a case, good PSU, mobo, and TXXX card - you add your own RAM, NIC, CPU HDD. Would you buy one for $699? I probably would. It took me a couple of months of fooling around with my Netfinity before I was pleased with the performance and satisfied that it would handle the things I wanted it to do without choking. If I had the option of saving the couple of months time obsessing over things like timing for $699, it would have been a no brainer. Digium wins too, because they get an incremental sale that they can make money on (margin on the mobo) and lower support costs because they don't have to chase down IRQ latency phantoms. hth my 2c ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Something every TDMP user should know
On May 12, 2005 01:17 pm, Colin Anderson wrote: I use SpanDSP to recieve faxes and before faxes were garbled and now they are OK (BTW, now recieving ~150 faxes a day 99.95% OK, so SpanDSP *does* work fine, you just have to set it up right. Ask me how.) No, don't ask you how. Show us how. Don't tease out information like this, like some cheap stripper. -A. ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Something every TDMP user should know
Damian Funnell wrote: 1. Check that the TDMP is on it's own IRQ (much to our embarrassment our card wasn't at the time, so we had to play with it a bit to get it to occupy a unique IRQ). 2. Disable hyper threading on the Xeon CPU. 3. Uninstall our SCSI hardware and replace it with IDE hardware. 4. Upgrade to the latest stable releases of Asterisk, Zaptel and Libpri. We made changes 1 and 2 in the above list and are prepared to make changes 3 and 4 if we find the problem hasn't gone away. It hasn't happened in over two weeks now (after occuring many times per day for a while), so we hopefully won't have to throw out our SCSI hardware. After we made each change (1 and 2 were made about two weeks apart from each other) we found that the quality improved, with the incidence of the issue halving after '1' and disappearing (hopefully for good) after '2'. Incidentally the results of zttest *did not* noticeably improve after making these changes (it is still below 99.98%). This is great info. I am running on an Intel box and attempting to go to a dual AMD Opteron setup on a Tyan board. I am not having luck luck getting my numbers above 99.6%. I've disabled every hardware gadget and service not needed and still haven't had much luck. I'm going to try a custom kernel as opposed to the stock one's I've tried, but that's been about 4 different OS's with the same results. Is there something to disable on Opteron's that would be the equivalent of disabling hyperthreading? Oh, and I even tried setting the pci latencies and it made no noticeable difference. Mark ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Something every TDMP user should know
I have never had to play with setpci before. Can you elaborate on the use and purpose of this command? On 5/12/05, Colin Anderson [EMAIL PROTECTED] wrote: They instantly got us to look at the output of zttest and we found that this was (in their words) 'extremely low', with 'best' and 'worst' readings of 99.975586% and 99.963379% respectively. Might want to give PCI latency setting a try, it helped for me. My ZTTEST would drop occasionally to 99.95% until I set: setpci -v -s 01:01.0 latency_timer=ff --Digium PRI card setpci -v -s 01:04:0 latency_timer=ff --Digium 401 4 X FXS setpci -v -s XX:XX:X latency_timer=0 --1 entry for every other PCI card in system from LSPCI output, modify XX:XX accordingly Before setpci I would get best in ZTTEST at 99.987793% and worst ~ 99.95% After setpci best is 100% and worst is 99.987793% consitient. I use SpanDSP to recieve faxes and before faxes were garbled and now they are OK (BTW, now recieving ~150 faxes a day 99.95% OK, so SpanDSP *does* work fine, you just have to set it up right. Ask me how.) I put the setpci statements in /etc/rc.d/rc.local before my modprobes to the Digium hardware and Asterisk startup. I'm using a 4-way Netfinity FC2 * 1.0 stable I dunno, maybe the community is being too hard on Digium about the design of the card. I can understand their perpective, it's brutal to make a card that has to have such tight tolerances and make it work acceptably on the huge variation in white box hardware (or black box, in your case). There's a page on the Wiki about motherboards that work well with installation notes but that's pointless since motherboards are such a moving target. Even the motherboard vendor screwing around with BIOS updates can invalidate that information. What I think is best for Asterisk implementation is for Digium to sell a motherboard. No, seriously. Find a ECS or Abit or ASUS mobo that consitiently yields 100% or 99.% and white-box it as a barebones kit with a TXXX card. Sell it as a case, good PSU, mobo, and TXXX card - you add your own RAM, NIC, CPU HDD. Would you buy one for $699? I probably would. It took me a couple of months of fooling around with my Netfinity before I was pleased with the performance and satisfied that it would handle the things I wanted it to do without choking. If I had the option of saving the couple of months time obsessing over things like timing for $699, it would have been a no brainer. Digium wins too, because they get an incremental sale that they can make money on (margin on the mobo) and lower support costs because they don't have to chase down IRQ latency phantoms. hth my 2c ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users -- --- Erick Perez Linux User 376588 http://counter.li.org/ (Get counted!!!) Panama, Republic of Panama ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Something every TDMP user should know
-Original Message- From: Erick Perez [mailto:[EMAIL PROTECTED] Sent: Thursday, May 12, 2005 2:19 PM To: Asterisk Users Mailing List - Non-Commercial Discussion; [EMAIL PROTECTED] Subject: Re: [Asterisk-Users] Something every TDMP user should know I have never had to play with setpci before. Can you elaborate on the use and purpose of this command? See: http://www-106.ibm.com/developerworks/library/l-hw2.html Also, for more PCI latency timer specifics: http://www.reric.net/linux/pci_latency.html Kris Boutilier Information Services Coordinator Sunshine Coast Regional District ___ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
