Re: using jemalloc in trusty

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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-bounces@xxxxxxxxxxxxxx] On Behalf Of Luis Periquito
Sent: Monday, May 23, 2016 7:30 AM
To: Ceph Users
Subject:  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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