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Re: tcmalloc mysql 5.7.14




I upgraded my mysql on my laptop to the MariaDB which is using the
jemmalloc as you stated and that seems to work well.

However on the servers it is running the Percona mysql 5.7.14 and there
are no specific malloc libraries configured.
>From what I understood , this then uses the normal OS malloc libraries ,
but this has proven to be problematic.


So even if I can setup jemmalloc as a test to see if it makes a
difference, that would help, however I am not sure how to enable / install
it on percona mysql 5.7.14 though so this is where I need some help.

   I would really appreciate any help here.


Regards


On Mon, May 8, 2017 1:56 pm, Reindl Harald wrote:
>

>
> Am 08.05.2017 um 13:51 schrieb Machiel Richards:
>
>> We are having an issue with memory allocations on mysql 5.7.14 whereby
>> mysql is not releasing the memory that is being allocated during
>> mysqldump processes.
>>
>> This has been logged as a bug with mysql dev team however they do not
>> see this as a bug and suggested we test using another malloc library such
>> as tcmalloc.
>>
>> However from what I can see, this is no longer included in mysql 5.7
>> and thus I am trying to find out if anyone can tell me how to enable /
>> install this and how to tell mysql to use this library.
>
> does the oracle stuff not support "jemalloc" like MariaDB
>
> MariaDB even suppports "-DWITH_JEMALLOC=system" because it's not the job
> of random software ship and build random library sources in their tarballs
> which usually don't get much attention in case of updates (others than
> system packages)
>
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