Re: Seeking Advice on Speeding Up Koji Builds with QEMU

[Michael McLean]

When using the external repos feature, it is generally best practice to
mirror the external repos you want to use (e.g. with a tool like
repomirror), and use your local mirror url for the external repo in Koji.

On Fri, Mar 17, 2023 at 9:09 AM Joe (Jun-Yan) Chen 
wrote:
> Dear Koji Development Team,
>
> I hope this email finds you well. I am writing to seek your expertise
> about using QEMU as a Koji Builder to build packages for the aarch64 on the
> fedora platform.
>
> When Koji invokes mock for building, it spends *a significant amount of
> time updating yum metadata*(≈15mins, <mirrors.kernel.org> set as external
> repo) resulting in taking 30 minutes to init buildroot alone (download
> speed≈2.8MB/s). I tried to use squid to cache mirror of fedora by modify
> /etc/kojid.com: yum_proxy = http://xxx:3128 but the "--installroot"
> process still costs a lot of time.
>
> I would like to know if there is any information that I may have
> overlooked or any guidance or recommendations you may have to speed up init
> buildroot process on QEMU builder.
>
> Thank you in advance for your time and consideration.
>
> https://www.ambarella.com
>
> Best Regards,
> Junyan CHEN
>
> [image: Ambarella AI Envisioned] https://www.ambarella.com *Junyan(Joe)
> CHEN*
> Software Engineer | SDK Team
> *Phone:* [phone]-265
> Email:  [e-mail]
> https://www.ambarella.com
>
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