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    SubjectRe: [PATCH] sysctl: Allow /proc/sys without sys_sysctl
    Date
    Andi Kleen <ak@suse.de> writes:

    >> So it will correctly handle that sysctl being compiled out, and
    >> the fallback to using /proc. The code seems to have been
    >> doing that since it was added to glibc in 2000.
    >
    > Using /proc is extremly slow for this.

    How so it is the same code in the kernel. Is open much slower than
    sys_sysctl?

    > You added significant cost to each program startup.

    Not each program only the ones that use pthreads.

    > I still think it's a good idea to simulate that sysctl and printk
    > the others.

    To reduce the noise something like that makes sense. I'm going to
    see if I can get glibc to use uname which should have the same effect.

    Eric
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