It's strange that the newer packages Liquidsoap depends on would induce a
2x increase in CPU time.
I think Debian package maintainers would be interested if you filed a bug
with your findings.
Martin
On Mon, Aug 13, 2012 at 4:03 PM, Renaud <[email protected]> wrote:
> On 08/09/12 19:03, Romain Beauxis wrote:
>
>> 2012/8/9 Renaud <[email protected]>:
>>
>>> Hi,
>>>
>> Hi!
>>
>> I've been testing Liquidsoap 1.0.0 for some time now.
>>> I've made some tests with the latest version from the sourceforge
>>> repository (1.0.1) and I've been comparing it to the Debian Package on
>>> the official wheezy repositories (1.0.0-4) and I noticed a huge
>>> performance gap between those two.
>>> With the 1.0.1 I compiled, I could barely run 150 liquidsoap processes,
>>> with the 1.0.0-4 from the Debian repos, I could run 245 easily.
>>> I then tried the 1.0.1 package on the Debian Sid repositories (because I
>>> I thought my compilation was at fault) and I noticed the exact same
>>> performance gap.
>>>
>>> Is that behavior considered as normal regarding the code changes between
>>> those versions ?
>>> Do you need more data from me (or me to do specific tests) to try and
>>> understand this ?
>>>
>> I don't think that liquidsoap 1.0.1 introduced any change that would
>> induce a performance loss compared to 1.0.0. I would instead look for
>> the architecture, compiler and encoding libraries that you are using.
>>
>> In particular, most processing time it spent encoding, so you should
>> look first at (I suppose) the libmp3lame used in each case. What
>> version? What provider? What compilation options? etc..
>>
>> BTW, you may also want to test our new fixed-point mp3 encoder:
>> https://github.com/savonet/**shine <https://github.com/savonet/shine>
>> It is supported in the latest HG repository and I suspect that it can
>> lead to small improvements that would be significant when scaling up.
>>
>> Romain
>>
>> Hello Romain,
>
> Indeed, I upgraded the packages containing the plugins when I upgraded to
> Liquidsoap 1.0.1 (I've only used official Debian repositories, wheezy and
> sid, for my tests).
> I'm using Lame to encode, I might try shine as I've seen it's working
> beautifully on the Raspberry. :)
>
> Thanks for the tips !
>
> Renaud
>
>
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