Re: [patch 1/4] KMON - kmon device/instrumentation ...

[Andi Kleen]

Davide Libenzi <davidel@xxxxxxxxxxxxxxx> writes:

> This patch serie introduces a way to log high frequency/volume data
> out of the kernel. Logging scheduler operations for example, with
> loads that generate tenths of thousands of context switches per second
> (possibly from multiple CPUs), can overload the kernel printk. Also,
> logging in binary form helps in reducing the size of the logged data
> that is tranfered from kernel to userspace. The kmon logger uses per
> CPU buffers (rings) that are flushed at a given frequency to all the
> instances of the kmon devices.

Sounds like you reinvented relayfs? (and ktrace before that)

-Andi
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