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: > https://issues.guix.gnu.org/51787.
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 ci.guix.gnu.org 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.
