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Re: CI status

From: Leo Famulari
Subject: Re: CI status
Date: Wed, 15 Dec 2021 12:26:36 -0500

On Wed, Dec 15, 2021 at 05:15:08PM +0100, Mathieu Othacehe wrote:
> * The IO operations on Berlin are mysteriously slow. Removing files from
>   /gnu/store/trash is taking ages. This is reported here:

I believe this is because we are running `guix gc --verify=contents` to
check the status of the build artifacts after the shutdown. I'm not sure
whether or not we can get a progress report on this.

> * The PostgreSQL database behind also became super slow
>   and I decided to drop it. I don't know if there's a connection with
>   the above point. I'm missing the appropriate tools/knowledge to
>   monitor the IO & file-system performances.

You might try `atop`, which at least highlights that the storage is
almost fully loaded with I/O operations. Beyond that is `sar` from the
sysstat package, although making use of it requires some learning.

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