* need help in DMA performance
@ 2007-01-18 20:35 Bhaskara Rao Kotla
2007-01-19 3:47 ` Nishanth Menon
0 siblings, 1 reply; 2+ messages in thread
From: Bhaskara Rao Kotla @ 2007-01-18 20:35 UTC (permalink / raw)
To: linux-omap-open-source
Hi,
I am working on OMAPSDP 2430 platform. Can someone suggest, which is the
best way to measure the real-time accurate performance of DMA transfer(DDR
location A to DDR location B (or) DDR location A to SRAM location B). Is
there any timer code APIs available to measure?
I would appreciate, if someone can reply to this.
Regards,
Bhaskara
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: need help in DMA performance 2007-01-18 20:35 need help in DMA performance Bhaskara Rao Kotla @ 2007-01-19 3:47 ` Nishanth Menon 0 siblings, 0 replies; 2+ messages in thread From: Nishanth Menon @ 2007-01-19 3:47 UTC (permalink / raw) To: Bhaskara Rao Kotla; +Cc: linux-omap-open-source Bhaskara Rao Kotla stated on 1/18/2007 2:35 PM: > Hi, > I am working on OMAPSDP 2430 platform. Can someone suggest, which > is the > best way to measure the real-time accurate performance of DMA > transfer(DDR > location A to DDR location B (or) DDR location A to SRAM location B). Is > there any timer code APIs available to measure? http://kerneltrap.org/node/7345 a simple ctrl+f in the include/linux gave: http://source.mvista.com/git/gitweb.cgi?p=linux-omap-2.6.git;a=blob;h=fca93025ab5191db9a1d4aeb9734dbfa2f574a20;hb=c5783642bf20735e33f12dbe3ea1235c53cbc846;f=include/linux/hrtimer.h http://source.mvista.com/git/gitweb.cgi?p=linux-omap-2.6.git;a=blob;h=611f17f79eefe32f78605589f175db8a77616474;hb=c5783642bf20735e33f12dbe3ea1235c53cbc846;f=include/linux/ktime.h http://source.mvista.com/git/gitweb.cgi?p=linux-omap-2.6.git;a=blob;h=a5b739967b74f46f745526952b1c947c236cf75a;hb=c5783642bf20735e33f12dbe3ea1235c53cbc846;f=include/linux/time.h Also i suggest a bit of google arnd.. and u;d see test code from tony himself here: http://muru.com/linux/omap/patches/old/patch-2.6.1-omap-dma-test.bz2 and other patches.. Regards, NM ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2007-01-19 3:47 UTC | newest] Thread overview: 2+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2007-01-18 20:35 need help in DMA performance Bhaskara Rao Kotla 2007-01-19 3:47 ` Nishanth Menon
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