Brett, On DM6446 Linux release build, we have seen ~120 microseconds for a round-trip message: GPP->DSP->GPP.
Note that this includes any context switching time on the Operating System. Our measurements are on a lightly loaded system, so you will likely see different numbers depending on the loading. Regards, Mugdha -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brett Olsen Sent: Wednesday, September 17, 2008 10:09 AM To: Davinci-linux-open-source@linux.davincidsp.com Subject: Expected DspLink Message Example Rates? Hi I have been profiling the message example for DspLink, with the following results: ========== Sample Application : MESSAGE ========== Entered MESSAGE_Create () Leaving MESSAGE_Create () Entered MESSAGE_Execute () Transferring 10000 iterations took 1 seconds 782620 microseconds. RoundTrip Time for 1 message is 178 microseconds. Leaving MESSAGE_Execute () Entered MESSAGE_Delete () Leaving MESSAGE_Delete () My question is, is this the round trip time that should be expected? Thanks Brett -- Brett Olsen ME(Merit) GradDipMgt DSP Senior Designer Tait Electronics Ltd 175 Roydvale Avenue Christchurch New Zealand Phone: (64) (3) 357 0766 Fax: (64) (3) 359 4632 Email: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> Post: PO Box 1645, Christchurch, NZ ======================================================================= This email, including any attachments, is only for the intended addressee. It is subject to copyright, is confidential and may be the subject of legal or other privilege, none of which is waived or lost by reason of this transmission. If the receiver is not the intended addressee, please accept our apologies, notify us by return, delete all copies and perform no other act on the email. Unfortunately, we cannot warrant that the email has not been altered or corrupted during transmission. ======================================================================= _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
