Bad query for "Rollback Ratio" panel in PGSQL Xacts

[l2dy]

In files/grafana/pgsql/pgsql-xacts.json, the query is for Rollback Rate:

pigsty/files/grafana/pgsql/pgsql-xacts.json

Line 378 in 4a084c3

"targets":[{"exemplar":false,"expr":"pg:ins:xact_rollback_rate1m{ins=\"$ins\"}","interval":"","intervalFactor":1,"legendFormat":"Rollback Rate","refId":"A"}],

But the panel's unit and title are different:

pigsty/files/grafana/pgsql/pgsql-xacts.json

Line 365 in 4a084c3

"unit":"percentunit"

pigsty/files/grafana/pgsql/pgsql-xacts.json

Line 379 in 4a084c3

"title":"Rollback Ratio",