Thanks Somnath, I expected that much. But given the hint in the config
files do you know if they are built to use jemalloc? it seems not...

On Mon, May 23, 2016 at 3:34 PM, Somnath Roy <somnath....@sandisk.com> wrote:
> You need to build ceph code base to use jemalloc for OSDs..LD_PRELOAD won't 
> work..
>
> Thanks & regards
> Somnath
>
> -----Original Message-----
> From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of Luis 
> Periquito
> Sent: Monday, May 23, 2016 7:30 AM
> To: Ceph Users
> Subject: [ceph-users] using jemalloc in trusty
>
> I've been running some tests with jewel, and wanted to enable jemalloc.
> I noticed that the new jewel release now loads properly /etc/default/ceph and 
> has an option to use jemalloc.
>
> I've installed jemalloc, enabled the LD_PRELOAD option, however doing some 
> tests it seems that it's still using tcmalloc: I still see the 
> "tcmalloc::CentralFreeList::FetchFromSpans()" and it's accompanying lines in 
> perf top.
>
> Also from a lsof I can see the tcmalloc libraries being used, but not the 
> jemalloc ones...
>
> Does anyone know what I'm doing wrong? I'm using the standard binaries from 
> the repo 10.2.1 and ubuntu trusty with kernel 3.13.0-52-generic.
>
> thanks,
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