[PATCH] x86: Add thresholds for "rep movsb/stosb" to tunables
Mon Jun 1 20:15:59 GMT 2020
On Mon, Jun 1, 2020 at 12:38 PM Carlos O'Donell <email@example.com> wrote:
> On Mon, Jun 1, 2020 at 3:33 PM H.J. Lu <firstname.lastname@example.org> wrote:
> > Did you mean adding --list-tunables to ld.so? libc.so.6 doesn't take
> > any arguments.
> Yes, I mean adding argument processing to libc.so.6, and handling
> We have enough infrastructure in place that wiring that up shouldn't be too bad?
> Then, even in trimmed down containers, you can just run
> /lib64/libc.so.6 --list-tunables and get back the list of tunables and
> their min, max, and security values.
Adding an argument to libc.so.6 is difficult since argument passing is
processor specific. Adding --list-tunables to ld.so is more doable.
> The alternative is a glibc-tunables binary which does only this, but
> that seems like waste.
More information about the Libc-alpha