[Mono-dev] tcmalloc

[Christian Hergert]

You can test it using LD_PRELOAD just fine.  Since most of the  
allocations use mmap() anyway (so reclamation is possible) it really  
isn't used enough to cause contention between cores.

-- Christian

On Oct 14, 2009, at 3:47 AM, pablosantosluac at terra.es wrote:

> Very interesting Christian. Wouldn't it be worth to have it  
> available as
> a compilation switch or something? Maybe performance varies  
> depending on
> the test. I'm thinking on our own load tests.
>
> pablo
>
> Christian Hergert wrote:
>> I've tested it in the past (extensibly during 2.4 cycle) with  
>> negligible
>> changes in performance on 2, 4, and 8 core boxes.
>>
>> -- Christian
>>
>> On Oct 13, 2009, at 2:10 PM, Zoltan Varga wrote:
>>
>>> Hi,
>>>
>>>  We use malloc for allocating runtime memory structures etc., but in
>>> a server app, that
>>> all happens during startup, so it doesn't help much.
>>>
>>>             Zoltan
>>>
>>> On Tue, Oct 13, 2009 at 11:05 PM, pablosantosluac at terra.es
>>> <pablosantosluac at terra.es> wrote:
>>> Hi there,
>>>
>>> Dick and I were talking about it today and most likely it wouldn't  
>>> have
>>> a big impact since Mono does use mmap instead but.. do you guys  
>>> think
>>> using tcmalloc would be worth?
>>>
>>> http://goog-perftools.sourceforge.net/doc/tcmalloc.html
>>>
>>> It's not new, but I've just found it reading the MySql 5.4 release
>>> notes, and it seems it helps boosting its performance
>>>
>>> http://mysqlha.blogspot.com/2009/01/double-sysbench-throughput-with_18.html
>>>
>>>
>>> Would it help?
>>>
>>>       pablo
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>>
>>