Re: /proc/sys/vm/overcommit_memory

[^] # Re: /proc/sys/vm/overcommit_memory

Posté par Benoît Sibaud (site web personnel) le 23 juillet 2019 à 13:22. En réponse au message pourquoi malloc peut échouer alors que linux utilise de la mémoire virtuelle. Évalué à 4.

man 3 malloc

NOTES
 By default, Linux follows an optimistic memory allocation strategy. This means that when mal‐
 loc() returns non-NULL there is no guarantee that the memory really is available. In case it
 turns out that the system is out of memory, one or more processes will be killed by the OOM
 killer. For more information, see the description of /proc/sys/vm/overcommit_memory and
 /proc/sys/vm/oom_adj in proc(5), and the Linux kernel source file Documentation/vm/overcommit-
 accounting.
(...)