LTTng » LTTng-tools

I'm tempted to derive the size based on the values we use for kernel tracing, and divide that value e.g. by 2, assuming we can have typically up to 2 users tracing in a system.

Thoughts ?

Thanks,

Mathieu

Mathieu Desnoyers wrote:

I'm tempted to derive the size based on the values we use for kernel tracing, and divide that value e.g. by 2, assuming we can have typically up to 2 users tracing in a system.

This would make sense for defining the default value. However, would it be a separate entry in defaults.h?

Yes, we'd split the current UST default entries into UST_PID and
UST_UID.

Thanks,

Mathieu

--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com

Yah most probably it will be a default value specific to per UID buffers.

So the Kernel size is: 262144 bytes so dividing this by two makes: 131072 bytes --> 128K

Seems good as any other values to me :)