[Freeswitch-users] TCMalloc and freeswitch

Thu Feb 26 16:37:37 MSK 2015

Brian,

We use lots of Perl code and many Perl session in our environment. That's
where malloc and calloc were getting locking the thread and would stay
there forever until we restarted the freeswitch.

On Wed, Feb 25, 2015 at 7:30 PM, Brian West <brian at freeswitch.org> wrote:

> Where are you running on where malloc and calloc were locking up a thread
> and killing the CPU?
>
> On Wed, Feb 25, 2015 at 2:49 PM, Ali Pey <alipey at gmail.com> wrote:
>
>> We haven't measured the effect in Production yet, but in the lab, it made
>> a big difference.
>>
>> The main problem that tcmalloc fixed for us was the threads locking on
>> malloc and calloc and killing the CPU. I strongly recommend tcmalloc. In
>> low traffic, it won't make a big difference, but in high traffic, you
>> definitely need tcmalloc.
>>
>> I will provide an update when I have better measurement from our
>> production servers.
>>
>> Regards,
>> Ali Pey
>>
>>
>> On Wed, Feb 25, 2015 at 11:25 AM, Michael Jerris <mike at jerris.com> wrote:
>>
>>> We make fairly heavy use of memory pools, which probably reduce malloc.
>>> I suspect that using them is of little benefit but would be interested to
>>> hear to the contrary.
>>>
>>> On Feb 24, 2015, at 2:15 PM, Tamas Jalsovszky <jalsot at gmail.com> wrote:
>>>
>>> Great idea. Do you have any evidence whether other malloc libs
>>> (tcmalloc, jemalloc) gives better performance over glibc ones?
>>>
>>> T.
>>>
>>> On Wed, Feb 18, 2015 at 5:13 PM, Brian West <brian at freeswitch.org>
>>> wrote:
>>>
>>>> The webpage for TCMalloc states:
>>>>
>>>> You can use tcmalloc in applications you didn't compile yourself, by
>>>> using LD_PRELOAD:
>>>>
>>>>    $ LD_PRELOAD="/usr/lib/libtcmalloc.so" blahblah
>>>>
>>>> On Wed, Feb 18, 2015 at 9:59 AM, Ali Pey <alipey at gmail.com> wrote:
>>>>
>>>>> Hello,
>>>>>
>>>>> Is there a way to switch to TCMalloc without recompiling freeswitch?
>>>>>
>>>>> Can someone please point me to (or provide) some instructions?
>>>>> (Preferably for Centos 6)
>>>>>
>>>>
>>>
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>>
>>
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>
>
>
> --
>
> *Brian West*
> brian at freeswitch.org
>
>
> *Twitter: @FreeSWITCH , @briankwest*
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