[asterisk-dev] DSP pci board.
Hi all, Has been poking through the * source code a bit and trying to identify the most CPU demanding piece of code. Is trans-coding the most CPU demanding? I happen to have access to a DSP pci board. If I can move the encoder/decoder off the host processor onto the DSP board, will I get a decent performance boost for an * PSTN gateway for VoIP phones (assuming all VoIP phones are using say g732, g729 or gsm)? ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
Re: [asterisk-dev] DSP pci board.
Where can i Get one of those DSP PCI boards? On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: Hi all, Has been poking through the * source code a bit and trying to identify the most CPU demanding piece of code. Is trans-coding the most CPU demanding? I happen to have access to a DSP pci board. If I can move the encoder/decoder off the host processor onto the DSP board, will I get a decent performance boost for an * PSTN gateway for VoIP phones (assuming all VoIP phones are using say g732, g729 or gsm)? ___--Bandwidth and Colocation provided by Easynews.com --asterisk-dev mailing listTo UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
Re: [asterisk-dev] DSP pci board.
On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: Hi all, Has been poking through the * source code a bit and trying to identify the most CPU demanding piece of code. Is trans-coding the most CPU demanding? I happen to have access to a DSP pci board. If I can move the encoder/decoder off the host processor onto the DSP board, will I get a decent performance boost for an * PSTN gateway for VoIP phones (assuming all VoIP phones are using say g732, g729 or gsm)? ___ You will get a performance increase, but then you'd also have to write Asterisk drivers for it. -- Bird's The Word Technologies, Inc. http://www.btwtech.com/ ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
RE: [asterisk-dev] DSP pci board.
The one I got is make for us for a different project. However, if you google "DSP PCI board", you can find quite a few around and some development kit as well. From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Wilmar CamposSent: Wednesday, March 22, 2006 4:57 PMTo: Asterisk Developers Mailing ListSubject: Re: [asterisk-dev] DSP pci board. Where can i Get one of those DSP PCI boards? On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: Hi all, Has been poking through the * source code a bit and trying to identify the most CPU demanding piece of code. Is trans-coding the most CPU demanding? I happen to have access to a DSP pci board. If I can move the encoder/decoder off the host processor onto the DSP board, will I get a decent performance boost for an * PSTN gateway for VoIP phones (assuming all VoIP phones are using say g732, g729 or gsm)? ___--Bandwidth and Colocation provided by Easynews.com --asterisk-dev mailing listTo UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
RE: [asterisk-dev] DSP pci board.
I was thinking just patching, say codec_gsm.c -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of BJ Weschke Sent: Wednesday, March 22, 2006 5:07 PM To: Asterisk Developers Mailing List Subject: Re: [asterisk-dev] DSP pci board. On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: Hi all, Has been poking through the * source code a bit and trying to identify the most CPU demanding piece of code. Is trans-coding the most CPU demanding? I happen to have access to a DSP pci board. If I can move the encoder/decoder off the host processor onto the DSP board, will I get a decent performance boost for an * PSTN gateway for VoIP phones (assuming all VoIP phones are using say g732, g729 or gsm)? ___ You will get a performance increase, but then you'd also have to write Asterisk drivers for it. -- Bird's The Word Technologies, Inc. http://www.btwtech.com/ ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
Re: [asterisk-dev] DSP pci board.
From: http://www.tmcnet.com/usubmit/2006/03/14/1456373.htm Digium Inc., the creator of Asterisk(TM), and pioneer of open source telephony, today announced the availability of new hardware solutions to enhance Asterisk transcoding and echo cancellation performance for VoIP and PSTN gateways. These new products include the TC400P VoIP transcoding card... snip The TC400P provides hardware transcoding of VoIP codecs; decreasing Asterisk's work load and providing improved CPU efficiency and an increase in channel density over a software-only solution. The TC400P provides Asterisk with full transcoding support and hardware acceleration for the G.723.1 and G.729A codecs. Can't wait for more info on this one. MATT--- On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: I was thinking just patching, say codec_gsm.c -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of BJ Weschke Sent: Wednesday, March 22, 2006 5:07 PM To: Asterisk Developers Mailing List Subject: Re: [asterisk-dev] DSP pci board. On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: Hi all, Has been poking through the * source code a bit and trying to identify the most CPU demanding piece of code. Is trans-coding the most CPU demanding? I happen to have access to a DSP pci board. If I can move the encoder/decoder off the host processor onto the DSP board, will I get a decent performance boost for an * PSTN gateway for VoIP phones (assuming all VoIP phones are using say g732, g729 or gsm)? ___ You will get a performance increase, but then you'd also have to write Asterisk drivers for it. -- Bird's The Word Technologies, Inc. http://www.btwtech.com/ ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
Re: [asterisk-dev] DSP pci board.
On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: I was thinking just patching,say codec_gsm.cGSM is a codec that was optimized for early mips processors back in the early 90s, and more or less flies on a modern processor. (the only way I can think of to make it go faster on a modern architecture would be to do multiple channels of gsm encodings/decodings in the same pass) I would argue that the only codecs worth patching for a DSP would be the higher overhead speex and g72x codecs. Even then the price of the virt-phys kernel transition required for the userspace asterisk to talk to a kernelspace dsp is probably way too high. A good place for a dsp is in a pots card like the digium T1 cards, where the interface to the data can run purely in kernel space. -Original Message-From: [EMAIL PROTECTED][mailto:[EMAIL PROTECTED]] On Behalf Of BJ WeschkeSent: Wednesday, March 22, 2006 5:07 PM To: Asterisk Developers Mailing ListSubject: Re: [asterisk-dev] DSP pci board.On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: Hi all, Has been poking through the * source code a bit and trying to identify the most CPU demanding piece of code. Is trans-coding the most CPU demanding? I happen to have access to a DSP pci board. If I can move the encoder/decoder off the host processor onto the DSP board, will I get a decent performance boost for an * PSTN gateway for VoIP phones (assuming all VoIP phones are using say g732, g729 or gsm)? ___ You will get a performance increase, but then you'd also have to write Asterisk drivers for it.--Bird's The Word Technologies, Inc.http://www.btwtech.com/___--Bandwidth and Colocation provided by Easynews.com --asterisk-dev mailing listTo UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev ___--Bandwidth and Colocation provided by Easynews.com --asterisk-dev mailing listTo UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev-- Mike TahtPostCards From the Bleeding Edge http://the-edge.blogspot.com ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
Re: [asterisk-dev] DSP pci board.
On 3/22/06, Matt Florell [EMAIL PROTECTED] wrote: From: http://www.tmcnet.com/usubmit/2006/03/14/1456373.htm Digium Inc., the creator of Asterisk(TM), and pioneer of open source telephony, today announced the availability of new hardware solutions to enhance Asterisk transcoding and echo cancellation performance for VoIP and PSTN gateways. These new products include the TC400P VoIP transcoding card... snip The TC400P provides hardware transcoding of VoIP codecs; decreasing Asterisk's work load and providing improved CPU efficiency and an increase in channel density over a software-only solution. The TC400P provides Asterisk with full transcoding support and hardware acceleration for the G.723.1 and G.729A codecs. Can't wait for more info on this one. I saw the board at VON. Wasn't sure if it was public yet. Sounds very, very cool. :) -- Bird's The Word Technologies, Inc. http://www.btwtech.com/ ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
Re: [asterisk-dev] DSP pci board.
On Wed, Mar 22, 2006 at 05:06:50PM -0500, BJ Weschke wrote: On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: Hi all, Has been poking through the * source code a bit and trying to identify the most CPU demanding piece of code. Is trans-coding the most CPU demanding? I happen to have access to a DSP pci board. If I can move the encoder/decoder off the host processor onto the DSP board, will I get a decent performance boost for an * PSTN gateway for VoIP phones (assuming all VoIP phones are using say g732, g729 or gsm)? ___ You will get a performance increase, but then you'd also have to write Asterisk drivers for it. That depends on the codec. The gsm codec and the speex codec can use libgsm and libspeex (respectively) dynamically-linked. So you basically need to implement the relevant codec library more efficiently on the DSP. Right? -- Tzafrir Cohen icq#16849755 +972-50-7952406 [EMAIL PROTECTED] http://www.xorcom.com ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
Re: [asterisk-dev] DSP pci board.
Agreed -- fourier transforms are expensive, but on modern multithreaded -- and multicore even -- processing systems that run at multiple gigahertz, are doing so many instructions per second that it could easily be more of a bottle neck getting the windows in and out of of the external processor than just processing them would be. --- Andrew Pollack Northern Collaborative Technologies 207-221-2547 [EMAIL PROTECTED] wrote on 03/22/2006 05:40:29 PM: On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: I was thinking just patching, say codec_gsm.c GSM is a codec that was optimized for early mips processors back in the early 90s, and more or less flies on a modern processor. (the only way I can think of to make it go faster on a modern architecture would be to do multiple channels of gsm encodings/decodings in the same pass) I would argue that the only codecs worth patching for a DSP would be the higher overhead speex and g72x codecs. Even then the price of the virt-phys kernel transition required for the userspace asterisk to talk to a kernelspace dsp is probably way too high. A good place for a dsp is in a pots card like the digium T1 cards, where the interface to the data can run purely in kernel space. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of BJ Weschke Sent: Wednesday, March 22, 2006 5:07 PM To: Asterisk Developers Mailing List Subject: Re: [asterisk-dev] DSP pci board. On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: Hi all, Has been poking through the * source code a bit and trying to identify the most CPU demanding piece of code. Is trans-coding the most CPU demanding? I happen to have access to a DSP pci board. If I can move the encoder/decoder off the host processor onto the DSP board, will I get a decent performance boost for an * PSTN gateway for VoIP phones (assuming all VoIP phones are using say g732, g729 or gsm)? ___ You will get a performance increase, but then you'd also have to write Asterisk drivers for it. -- Bird's The Word Technologies, Inc. http://www.btwtech.com/ ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev -- Mike Taht PostCards From the Bleeding Edge http://the-edge.blogspot.com ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
RE: [asterisk-dev] DSP pci board.
Excellect. Once the TC400P is release. I am sure DSP programmers will put DFFT code on the board too. From: [EMAIL PROTECTED] on behalf of Matt Florell Sent: Wed 3/22/2006 5:37 PM To: Asterisk Developers Mailing List Subject: Re: [asterisk-dev] DSP pci board. From: http://www.tmcnet.com/usubmit/2006/03/14/1456373.htm Digium Inc., the creator of Asterisk(TM), and pioneer of open source telephony, today announced the availability of new hardware solutions to enhance Asterisk transcoding and echo cancellation performance for VoIP and PSTN gateways. These new products include the TC400P VoIP transcoding card... snip The TC400P provides hardware transcoding of VoIP codecs; decreasing Asterisk's work load and providing improved CPU efficiency and an increase in channel density over a software-only solution. The TC400P provides Asterisk with full transcoding support and hardware acceleration for the G.723.1 and G.729A codecs. Can't wait for more info on this one. MATT--- On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: I was thinking just patching, say codec_gsm.c -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of BJ Weschke Sent: Wednesday, March 22, 2006 5:07 PM To: Asterisk Developers Mailing List Subject: Re: [asterisk-dev] DSP pci board. On 3/22/06, Wai Wu [EMAIL PROTECTED] wrote: Hi all, Has been poking through the * source code a bit and trying to identify the most CPU demanding piece of code. Is trans-coding the most CPU demanding? I happen to have access to a DSP pci board. If I can move the encoder/decoder off the host processor onto the DSP board, will I get a decent performance boost for an * PSTN gateway for VoIP phones (assuming all VoIP phones are using say g732, g729 or gsm)? ___ You will get a performance increase, but then you'd also have to write Asterisk drivers for it. -- Bird's The Word Technologies, Inc. http://www.btwtech.com/ ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev ___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev attachment: winmail.dat___ --Bandwidth and Colocation provided by Easynews.com -- asterisk-dev mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-dev
