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libjemalloc
2017 Aug 12
4
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On 12 August 2017 at 15:10, luke-tierney at uiowa.edu wrote:
| As the Python posts poitns out, it is possible to use alternate malloc
| implementations, either rebuilding R to use them or using LD_PRELOAD.
| On Ubuntu for example, you can have R use jemalloc with
|
| sudo apt-get install libjemalloc1
| env LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.1 R
|
| This does not seem to hold onto memory to the same degree, but I don't
| know about any other aspect of its performance.
Interesting.
I don't really know anything about malloc versus jemalloc internals but I can
affirm tha...
2017 Aug 12
3
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Strange because in my all my experiments calling malloc.trim always helped
- memory reported by top decreased to the level it supposed to be. Do you
have in mind case when calling malloc.trim won't do anything? Also
shouldn't MALLOC_TRIM_THRESHOLD_ env variable has impact on malloc.trim
calls? At the moment seems any value is ignored...
12 ???. 2017 ?. 6:09 ?? ???????????? "Simon
2017 Aug 13
0
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...017 at 15:10, luke-tierney at uiowa.edu wrote:
> | As the Python posts poitns out, it is possible to use alternate malloc
> | implementations, either rebuilding R to use them or using LD_PRELOAD.
> | On Ubuntu for example, you can have R use jemalloc with
> |
> | sudo apt-get install libjemalloc1
> | env LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.1 R
> |
> | This does not seem to hold onto memory to the same degree, but I don't
> | know about any other aspect of its performance.
>
> Interesting.
>
> I don't really know anything about malloc versus je...
2017 Aug 14
0
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...17 at 15:10, luke-tierney at uiowa.edu wrote:
> | As the Python posts poitns out, it is possible to use alternate malloc
> | implementations, either rebuilding R to use them or using LD_PRELOAD.
> | On Ubuntu for example, you can have R use jemalloc with
> |
> | sudo apt-get install libjemalloc1
> | env LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.1 R
> |
> | This does not seem to hold onto memory to the same degree, but I don't
> | know about any other aspect of its performance.
>
> Interesting.
>
> I don't really know anything about malloc versus...
2017 Aug 12
0
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...t
http://notes.secretsauce.net/notes/2016/04/08_glibc-malloc-inefficiency.html
As the Python posts poitns out, it is possible to use alternate malloc
implementations, either rebuilding R to use them or using LD_PRELOAD.
On Ubuntu for example, you can have R use jemalloc with
sudo apt-get install libjemalloc1
env LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.1 R
This does not seem to hold onto memory to the same degree, but I don't
know about any other aspect of its performance.
The emacs post suggests that calling malloc_trim may have more of an
effect in some cases: the post describes call...