[Freeswitch-users] Command line parameter -waste

[Guillermo Ruiz Camauer]

Steven,


Thanks for your quick answer and clear explanation.  I already have the
core database in RAM.  I was just wondering if I need it at all, since I
don't use 'show calls' or 'show channels'.

There are a few other Core Parameters in switch.conf that I would like to
know when they  should be tweaked from their default configuration:

max-db-handles:  Should there be one handle every N simultaneous calls?
 What is N?
initial-event-threads:  Does it hurt or help to bump this up to 2 or 3 on
an 8 core machine, even if the WARNING "Create additional event dispatch
thread" hasn't come up?
db-handle-timeout:  What symptoms would indicate that this needs tuning?
 Should it somehow be scaled when max-db-handles is changed?Thanks,

Guillermo


On Wed, Jun 25, 2014 at 5:48 AM, Steven Ayre <steveayre at gmail.com> wrote:

> Could someone please explain what the effect the -waste parameter has on
>> starting FreeSwitch?
>
>
> This is my understanding... it may be incorrect.
>
> The default size of the stack is 8MB per-thread. On 32bit machines this
> means you could run out of virtual memory space if you're running lots of
> threads (ie lots of calls). Lets say FreeSWITCH can address the maximum 4GB
> 32bit can address (and it probably can't, ~3GB is more likely), that's only
> ~500 threads. FreeSWITCH will reduce the size of the stack on startup to
> SWITCH_THREAD_STACKSIZE, currently 240KB. The advantage is that you can run
> many more calls, the disadvantage is that you could run out of stack space
> and crash FreeSWITCH - in practice the latter happening is probably quite
> unlikely though.
>
> -waste disables that behaviour to keep the default 8MB stack, for cases
> where you may find you're running out of stack space. You almost certainly
> don't need it.
>
> On 64bit the virtual memory range is so large that this is not an issue. I
> don't think the -waste parameter even exists on 64bit platforms.
>
>
>
>
>> Also, what are the implications of turning off the scoreboard by running
>> with -nosql?  What functionality is lost?
>
>
> Among other things you lose commands like 'show calls' 'show channels',
> and probably interferes with a bunch of other functionality too. I'd avoid
> it unless you *really* need it.
>
> If you're trying to optimise the system try moving the core database to
> either a ramdisk or ODBC before getting rid of it entirely.
>
>
>
>
>
> On 24 June 2014 22:09, Guillermo Ruiz Camauer <grcamauer at gmail.com> wrote:
>
>> Could someone please explain what the effect the -waste parameter has on
>> starting FreeSwitch?
>> Also, what are the implications of turning off the scoreboard by running
>> with -nosql?  What functionality is lost?
>>
>> thanks,
>>
>> --
>> Guillermo Ruiz Camauer
>>
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>> 
>> 
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>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://wiki.freeswitch.org
> http://www.cluecon.com
>
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-- 
Guillermo Ruiz Camauer
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