Author vstinner
Recipients jtaylor, pitrou, rhettinger, serhiy.storchaka, vstinner, yselivanov
Date 2016-02-02.11:10:45
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Message-id <1454411445.91.0.933604026266.issue26249@psf.upfronthosting.co.za>
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> Hum, the point of PyMem_Malloc() is that it's distinct from PyObject_Malloc(), right? Why would you redirect one to the other?

For performances.

> (of course, we might question why we have two different families of allocation APIs...)

That's the real question: why does Python have PyMem family? Is it still justified in 2016?

--

Firefox uses jemalloc to limit the fragmentation of the heap memory. Once I spent a lot of time to try to understand the principle of fragmentation, and in my tiny benchmarks, jemalloc was *much* better than system allocator. By the way, jemalloc scales well on multiple threads ;-)

* http://www.canonware.com/jemalloc/
* https://github.com/jemalloc/jemalloc/wiki

My notes on heap memory fragmentation: http://haypo-notes.readthedocs.org/heap_fragmentation.html
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Date User Action Args
2016-02-02 11:10:45vstinnersetrecipients: + vstinner, rhettinger, pitrou, jtaylor, serhiy.storchaka, yselivanov
2016-02-02 11:10:45vstinnersetmessageid: <1454411445.91.0.933604026266.issue26249@psf.upfronthosting.co.za>
2016-02-02 11:10:45vstinnerlinkissue26249 messages
2016-02-02 11:10:45vstinnercreate