Jacob Champion <jacob.champ...@enterprisedb.com> writes: > On Mon, Jul 28, 2025 at 6:30 PM Michael Paquier <mich...@paquier.xyz> wrote: > >> Could getentropy() be more efficient at the end on most platforms, >> meaning that this could limit the meaning of having a GUC switch? > > I don't know. [2] implies that the performance comparison depends on > several factors, and falls in favor of OpenSSL when the number of > bytes per call is large [...] > [2] https://dotat.at/@/2024-10-01-getentropy.html
Note that that test was done on an older Linux kernel without the vDSO implementation of getentropy(), so on newer kernel (>=6.11) and glibc (>= 2.41) versions the difference might be smaller or the other way around. - ilmari
