[systemd-devel] Significant performance loss caused by commit a65f06b: journal: return -ECHILD after a fork

Florian Weimer fw at deneb.enyo.de
Tue Jul 11 19:26:26 UTC 2017


* Lennart Poettering:

> Apparently, this regressed between this version and
> glibc-2.24-9.fc25.x86_64 hence.

Yes, I backported the fork cache removal to Fedora 25.  There is no
longer a good way to main such a cache in userspace because glibc
cannot intercept anymore all the ways that can change the PID of the
current process because the kernel interfaces for process management
are incredibly rich these days.


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