[Bug dynamic-link/27695] ld.so has poor performance characteristics when loading large quantities of .so files

["steve.gargolinski at gmail dot com" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=27695

--- Comment #4 from steve.gargolinski at gmail dot com ---
We use a combination of RTLD_LOCAL and RTLD_GLOBAL in our program. For the core
libraries that most other libraries and plugins depend on, we use RTLD_GLOBAL
to load to avoid cross-library exception and RTTI issues. Also, localizing the
core libraries prevent our program from “stacked” dynamic loading (e.g., at
some later time dynamically loading another shared object that depends on the
same core libraries).

For small plugins that are self-contained, our program uses RTLD_LOCAL to load
them. As to RTLD_NOW, we use that to avoid runtime symbol resolution issues,
which can only be found via exhaustive testing when using RTLD_LAZY.

If a targeted discussion about our use case would be helpful to dig into more
details, we would definitely be willing to do so.

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