Re: Kernel logging

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Hi Neependra,

>> My question is, Is there a better way (better than logging) of
>> tracking operations internal to the kernel continuously over long
>> period of time in a way that doesn't affect latency (very
>> drastically)?
>
> You can look at SystemTap which has very less overhead.
> http://sourceware.org/systemtap/wiki

Thanks for the info! Will check it out.

I also found something about trace_printk (part of ftrace) which is
faster than printk because it doesn't output to the console, instead
it writes to a circular buffer which can be read from userspace. Very
nice indeed!

lwn.net/Articles/365835/

Thanks,
-Joel

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