OK, to provide some more meaningless numbers...
I took a 4-minute CD track ("Making plans for Nigel" by XTC), made two
copies, one flac and one wav, stripped all tags from the flac (so that
there wouldn't be a major difference in display activity during
playback), removed the wav->flc rule from convert.conf, and played each
track in a loop for 15 minutes on my squeezebox touch, while monitoring
the load with "top".
Results? Meaningless. The CPU and I/O load varies too much to give any
reasonable picture - the only thing I can say is that not surprisingly,
wav uses more system time in relation to user space time compared to
flac.
The short-term load figures for wav were more uneven compared to flac,
with occasional sudden bursts of very heavy load (I assume when
copying/filling buffers).
The 15-minute load averages were too close to call - 0.64 for wav, 0.63
for flac.
Conclusion: the differences are too small to determine by simplistic
measures like this, and it does indeed seem that wav trades application
CPU usage for system CPU usage.
"To try to judge the real from the false will always be hard. In this
fast-growing art of 'high fidelity' the quackery will bear a solid gilt
edge that will fool many people" - Paul W Klipsch, 1953
------------------------------------------------------------------------
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