squeezelite uses quite a lot of cpu even when doing "noting"

[GoogleCodeExporter]

What steps will reproduce the problem?
1. run squeezelite on rasperry pi
2. look at the process with top
3. even when doing nothing (no client connected, no music streamed), it takes 
around 2% CPU

What is the expected output? What do you see instead?
I can see in the logs that it constantly does something like 

[11:41:19.155988] process_strm:232 strm command t
[11:41:19.156951] sendSTAT:164 STAT: STMt
[11:41:24.103024] process:469 strm
[11:41:24.103227] process_strm:232 strm command t
[11:41:24.103330] sendSTAT:164 STAT: STMt
[11:41:29.006545] process:469 strm
[11:41:29.006747] process_strm:232 strm command t
[11:41:29.006851] sendSTAT:164 STAT: STMt
[11:41:34.023485] process:469 strm
[11:41:34.023691] process_strm:232 strm command t
[11:41:34.023792] sendSTAT:164 STAT: STMt

What version of the product are you using? On what operating system?
Squeezelite v1.5 - RasperryPI with debian

Please provide any additional information below.

Original issue reported on code.google.com by chrmhoff...@gmail.com on 13 Apr 2014 at 9:42

[GoogleCodeExporter]

Maybe this is intended behavior of the LMS stream protocol, but can you somehow 
lower the frequency or avoid that it does send those sendSTAT messages?

Original comment by chrmhoff...@gmail.com on 13 Apr 2014 at 9:45

[GoogleCodeExporter]

It is normal for squeezelite to keep the connection to the server when not 
playing.  It will also stream silence to the output device and this is likely 
to be what causes the cpu load you notice.  This will stop if you "power off" 
the squeezebox from the LMS web interface or other interface.  The level of cpu 
taken streaming silence will depend which alsa output device you are using, hw 
cards are likely to be lower cpu than other outputs.

Original comment by trio...@btinternet.com on 13 Apr 2014 at 6:59