On 9/27/21 2:15 PM, Mike Gilbert wrote:
On Mon, Sep 27, 2021 at 1:44 PM Robin H. Johnson <robb...@gentoo.org> wrote:
On Mon, Sep 27, 2021 at 01:15:10PM -0400, Mike Gilbert wrote:
On Mon, Sep 27, 2021 at 12:23 PM Mike Pagano <mpag...@gentoo.org> wrote:
Adding linux-info calls to pkg_pretend or pkg_setup causes slowdowns
when running emerge, so we should do so only when there is a
compensating benefit.
Is this a significant slowdown? Do you have any numbers?
Adding a check for CONFIG_PACKET to the dhcpcd ebuild adds around 7
seconds of delay time to the pkg_setup and/or pkg_pretend phase on my
system.
That's ok if a small number of packages are doing it, but it would
become quite annoying if a significant number of them get queued up.
7 seconds is ridiculous.
I think the horribly slow performance is mainly due to this change in
how we detect the kernel version:
https://gitweb.gentoo.org/repo/gentoo.git/commit/eclass/linux-info.eclass?id=d1ea596f034285cd044006b107a60902ea059793
That causes "make" to be called 4 times, and each make invocation adds
a couple of seconds to the get_version call.
Changes to these eclasses are like a prison of circular breakage for which
there is no escape.
