personal_infra/ansible
counterweight d50774c39a
bitcoin-knots: raise dbcache from 200 to 1200
Tried on 2026-10-18 to cut the HDD reads: at 200 MB the P2P thread alone read
~4 MB/s validating relayed transactions. Steady-state reads did drop (to
~0.4 MB/s) and RPC rejections went to zero.

But block validation got SLOWER over the next 14 blocks: median 60s against
11s before. bitcoind's bench log puts all of it in input lookups at ~5 ms
each. The likely cause is that the extra GB came out of the guest's page
cache, which holds compressed chainstate files far more densely than
bitcoind's cache holds decoded coins. Committed because it is what is
running; probably to be reverted.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-19 22:10:25 +02:00
..
group_vars ntfy-emergency-app: remove it 2026-10-19 22:10:22 +02:00
host_vars monero: check every five minutes again 2026-10-19 22:10:24 +02:00
infra bitcoin-knots: ride out block-time RPC stalls 2026-10-19 22:10:25 +02:00
playbooks jar-lid-archive: a staging deployment on its own box 2026-10-03 23:56:30 +02:00
roles bitcoin-knots: raise dbcache from 200 to 1200 2026-10-19 22:10:25 +02:00
services gatus: turn Signal alerting back on 2026-10-19 22:10:25 +02:00
ansible.cfg now using password 2026-09-11 17:59:41 +02:00
inventory.ini rebuild: fold monitoring into spacey and prd-arbret into vipy 2026-10-19 22:10:22 +02:00
requirements.yml uptime-kuma: annotate config and drop the unused collection 2026-09-11 22:43:56 +02:00
site.yml ntfy-emergency-app: remove it 2026-10-19 22:10:22 +02:00