Hi Ludovic, Ludovic Courtès <l...@gnu.org> writes:
> From Sunday May 19th to Tuesday may 21st, for about 36h, > bayfront.guix.gnu.org, the machine behind many services went down: > > https://lists.gnu.org/archive/html/info-guix/2024-05/msg00000.html > > Affected web sites and services included: > > guix.gnu.org > bordeaux.guix.gnu.org > logs.guix.gnu.org > hpc.guix.info > foundation.guix.info > packages.guix.gnu.org > qa.guix.gnu.org > [...] > A large part of the slowness was due to ‘guix substitute’ reading > all the 300K+ entries from /var/guix/substitute/cache and deleting > them, one by one (this took several minutes). Chris had mentioned > that performance issue in the past; it’s not much of a problem on > one’s laptop with an SSD, but it’s clearly a problem here where > there are more entries than usual. We should at least drastically > reduce the TTL of cache entries. Interesting! > • qa-frontpage failed to build when we first reconfigured the machine, > so we commented it out. This is now fixed: > > > https://git.savannah.gnu.org/cgit/guix/maintenance.git/commit/?id=3fecb1e8fdea65a7440fec403c1c52da197b5dfe > > • guix-packages-website (the server behind packages.guix.gnu.org) > still refuses to start with an Artanis error: > > https://issues.guix.gnu.org/71138 > > Ludo’, on behalf on the emergency rescue^W^W sysadmin team. Phew! Thanks for the detailed write-up and for the fixes/thankless work of bringing the machine back up and running. -- Maxim
