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Re: simple eCos profiler
On Wednesday 31 July 2002 01:05, Andrew Lunn wrote:
> Hi Rich.
>
> This looks similar to the one i wrote a few years ago for eCos. Its
> sitting in the ecos-discuss archive somewhere. That was for the
> EBSA285, but could be easily ported to other targets. I find a
> profiler useful at times, so it would be good to get something
> incorporated.
I just want to get something basic, perhaps later on a more polished
tool can be made.
> > I would like to get at least hooks for this into the main tree. It
> > will not slow down eCos, it will be conditionally compilable. I
> > can do the CDL if requested. How do I get it into CVS?
>
> Post the patch to ecos-patches. We the community can then take a look
> at it and decide what needs doing to make it incorperatable, eg cdl,
> making it more generic etc.
There is a significant amount of code, most of it is not kernel code.
Is it OK if I post a link to a webpage? I just have to set one up :D
> > -Rich
> >
> > P.S. hal_ctrlc_check gets called a LOT and seems to get called
> > more, the more pings I send it. I haven't debugged this to find out
> > why, but it's perplexing. Anybody know what is going on with it?
>
> This function acts as the interface between the application network
> stack and redboot. Each packet received by the application is passed
> down to redboot to let it decide if the packet is actually for the
> redboot stack, not the application stack.
Oh. That name seem sort of obsfucated, but I get it.
I will have to look at this more. I have found that it can take up
significant time (like 33% of the active time) if I send enough
network traffic through it.
I have a question. When redboot "runs", can the application on
top of redboot interrupt it? I haven't investigated the relationship
between the two very much.
> Andrew
Thank you,
-Rich
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