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On Mon, Sep 27, 2021 at 1:44 PM Robin H. Johnson <robbat2@g.o> wrote: |
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> |
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> On Mon, Sep 27, 2021 at 01:15:10PM -0400, Mike Gilbert wrote: |
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> > On Mon, Sep 27, 2021 at 12:23 PM Mike Pagano <mpagano@g.o> wrote: |
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> > > > Adding linux-info calls to pkg_pretend or pkg_setup causes slowdowns |
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> > > > when running emerge, so we should do so only when there is a |
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> > > > compensating benefit. |
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> > > |
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> > > Is this a significant slowdown? Do you have any numbers? |
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> > |
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> > Adding a check for CONFIG_PACKET to the dhcpcd ebuild adds around 7 |
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> > seconds of delay time to the pkg_setup and/or pkg_pretend phase on my |
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> > system. |
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> > |
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> > That's ok if a small number of packages are doing it, but it would |
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> > become quite annoying if a significant number of them get queued up. |
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> 7 seconds is ridiculous. |
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I think the horribly slow performance is mainly due to this change in |
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how we detect the kernel version: |
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https://gitweb.gentoo.org/repo/gentoo.git/commit/eclass/linux-info.eclass?id=d1ea596f034285cd044006b107a60902ea059793 |
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That causes "make" to be called 4 times, and each make invocation adds |
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a couple of seconds to the get_version call. |
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