Help on tuning the Linux kernel for soft real-time requiremen ts

Wolfgang Denk wd at
Fri Oct 22 08:34:04 EST 2004

In message <EFB813091B18D511BD3600508B644F820A618202 at> you wrote:
> Gerald, you may be right about this. Although I still don't know which of
> the threads in our system cause the serial resource contention, I

Check the console driver first.

> BTW, are you guys aware of any tool that could help me debug the threads
> that would concurrently try to access shared resources?
> Do you think LTT would be helpful for this particular problem (serial driver

LTT is certaily useful; but be aware that it may generate a  of  data
in  short  time,  which then needs a lot of work to really understand
what's going on ;-)

> contention that leads to missing soft real-time deadlines)?

I'm not exaclty sure I really understand what  you  are  asking  for.
Isn't  sometimes  missing  the  deadlines what the "soft" is standing
for? ;-)

Best regards,

Wolfgang Denk

Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at
There's another way to survive.  Mutual trust -- and help.
	-- Kirk, "Day of the Dove", stardate unknown

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