compressible?

"Johnicholas Hines" <[email protected]>
Newsgroups gmane.linux.kernel.tracing
Message-ID <[email protected]>
Hi,

I was noticing that the (binary) cpu_0 file that lttng generates seems
to be pretty compressible.
For example, using gzip, I compressed three cpu_0 files:
25M -> 4.2M
57M -> 8.3M
56M -> 8.2M

Do you think including a compression step would be useful for
minimizing disk traffic due to the instrumentation? The potential
benefit is seems to be a factor of five reduction in disk traffic, but
I don't know how big the costs are.

It's also possible my traces are particularly compressible because of
patterns in what I'm doing.

Johnicholas
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