Excimer UI Server is a new service for viewing profiles captured with WikimediaDebug. It will be hosted on performance.wikimedia.org. It serves a similar purpose to the XHGui service that we run today. Its main value is the ability to generate detailed flame graphs (more details at T291015). In the long run it might supersede XHGui but that has not yet been decided.
The database will be similar in purpose, size, load, replication, and backup strategy to the xhgui database that exists today (T254795: Database for XHGui profiles).
One notable difference is that the excimer database will not require write access from MediaWiki app servers. Instead, it will only be written to from webperf1003/webperf2003.
- Database name: excimer
- Database user: excimer_ui_server
- Cluster: misc, maybe m2 again like xhgui? https://wikitech.wikimedia.org/wiki/MariaDB#Miscellaneous
- Schema: https://gerrit.wikimedia.org/r/plugins/gitiles/performance/excimer-ui-server/+/HEAD/tables.sql
- Grants: connections from webperf* hosts only with permissions to SELECT, INSERT, and DELETE.