bug#66997: nar-herder uses 10 GiB of resident memory, 100% CPU on hydra-guix-129

[Christopher Baines]

Maxim Cournoyer <maxim.cournoyer@gmail.com> writes:

> I was looking at top on the hydra-guix-129 node, which runs nar-herder,
> and saw this:
>
> 4772 nar-her+  20   0   28.9g  11.5g 100.0   6.1     55,55 S .nar-herder-rea
>
> 11.5 GiB of memory seems a bit excessive, no?  Its cumulated processing
> time is also at the top of the table, and it seems stuck at 100% of CPU
> usage.
>
> Is this expected of the nar-herder, or has it gone awry?

I think hydra-guix-129 was running an older version of the nar-herder,
so I've updated it and I think that's improved the situation.

I've just reconfigured the machine to use a specific commit at the
moment, but it would be good to bump the commit that the Guix package is
using.

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