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List: fedora-devel-list
Subject: Re: Has something changed with RPMS?
From: Richard Shaw <hobbes1069 () gmail ! com>
Date: 2020-06-02 2:48:56
Message-ID: CAN3TeO23cKBp1chZVZU8Y65pd1FQu-=O2qvo=ndCE7r+FuhfdA () mail ! gmail ! com
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On Mon, Jun 1, 2020 at 9:37 PM Adam Williamson <adamwill@fedoraproject.org>
wrote:
> On June 1, 2020 7:13:51 p.m. PDT, Richard Shaw <hobbes1069@gmail.com>
> wrote:
> >I've noticed lately when doing mock builds that it takes a lot longer
> >to
> >install all the dependencies. Especially large -devel packages with
> >tons of
> >small files (boost-devel, vtk-devel, cmake-data).
>
> I've noticed the same problem but I'm not sure it's about the packages. It
> may be something to do with mock or the kernel, possibly. Are you running
> Rawhide on the machine where you're doing the mock builds?
>
I'm building for rawhide, but on my F32 desktop...
> I most recently noticed it when building lives with Python 3.9 for testing
> - that should take less than an hour per image, it actually took 12+ hours
> per image. When I attach an strace to the dnf process it seems like it
> doesn't really stick on any one call for a *long* time, but it seems to do
> a lot of fsyncs, and each one takes, like, a half second or so. I *think*
> the slowness is the result of all those fsyncs piling up.
>
The actual package build time doesn't "feel" any difference, but installing
the dependencies definitely takes much longer.
I've tried installing nosync (both i686 and x86-64) on the host but it
> didn't seem to make a difference, I didn't check for sure that it actually
> kicked in. I'll try and do a bit more of a systematic look at it tomorrow,
> since at least now I know I'm not the only one...
>
I have nosync (both arches) installed as well...
Thanks,
Richard
[Attachment #5 (text/html)]
<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" \
class="gmail_attr">On Mon, Jun 1, 2020 at 9:37 PM Adam Williamson <<a \
href="mailto:adamwill@fedoraproject.org">adamwill@fedoraproject.org</a>> \
wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On June 1, 2020 \
7:13:51 p.m. PDT, Richard Shaw <<a href="mailto:hobbes1069@gmail.com" \
target="_blank">hobbes1069@gmail.com</a>> wrote:<br> >I've noticed lately \
when doing mock builds that it takes a lot longer<br> >to<br>
>install all the dependencies. Especially large -devel packages with<br>
>tons of<br>
>small files (boost-devel, vtk-devel, cmake-data).<br><br>
I've noticed the same problem but I'm not sure it's about the packages. \
It may be something to do with mock or the kernel, possibly. Are you running Rawhide \
on the machine where you're doing the mock \
builds?<br></blockquote><div><br></div><div>I'm building for rawhide, but on my \
F32 desktop...</div><div><br></div><div> </div><blockquote class="gmail_quote" \
style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex">I most recently noticed it when building lives \
with Python 3.9 for testing - that should take less than an hour per image, it \
actually took 12+ hours per image. When I attach an strace to the dnf process it \
seems like it doesn't really stick on any one call for a *long* time, but it \
seems to do a lot of fsyncs, and each one takes, like, a half second or so. I *think* \
the slowness is the result of all those fsyncs piling \
up.<br></blockquote><div><br></div><div>The actual package build time doesn't \
"feel" any difference, but installing the dependencies definitely takes \
much longer. </div><div><br></div><div><br></div><blockquote class="gmail_quote" \
style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex">I've tried installing nosync (both i686 and \
x86-64) on the host but it didn't seem to make a difference, I didn't check \
for sure that it actually kicked in. I'll try and do a bit more of a systematic \
look at it tomorrow, since at least now I know I'm not the only \
one...<br></blockquote><div><br></div><div>I have nosync (both arches) installed as \
well...</div><div><br></div><div>Thanks,</div><div>Richard </div></div></div>
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