Merge branch 'master' into version_metric

Author: wrouesnel

cmd/postgres_exporter/postgres_exporter.go

@@ -205,6 +205,23 @@ func dumpMaps() {
 }
 
 var builtinMetricMaps = map[string]intermediateMetricMap{
+"pg_stat_bgwriter": {
+map[string]ColumnMapping{
+"checkpoints_timed": {COUNTER, "Number of scheduled checkpoints that have been performed", nil, nil},
+"checkpoints_req": {COUNTER, "Number of requested checkpoints that have been performed", nil, nil},
+"checkpoint_write_time": {COUNTER, "Total amount of time that has been spent in the portion of checkpoint processing where files are written to disk, in milliseconds", nil, nil},
+"checkpoint_sync_time": {COUNTER, "Total amount of time that has been spent in the portion of checkpoint processing where files are synchronized to disk, in milliseconds", nil, nil},
+"buffers_checkpoint": {COUNTER, "Number of buffers written during checkpoints", nil, nil},
+"buffers_clean": {COUNTER, "Number of buffers written by the background writer", nil, nil},
+"maxwritten_clean": {COUNTER, "Number of times the background writer stopped a cleaning scan because it had written too many buffers", nil, nil},
+"buffers_backend": {COUNTER, "Number of buffers written directly by a backend", nil, nil},
+"buffers_backend_fsync": {COUNTER, "Number of times a backend had to execute its own fsync call (normally the background writer handles those even when the backend does its own write)", nil, nil},
+"buffers_alloc": {COUNTER, "Number of buffers allocated", nil, nil},
+"stats_reset": {COUNTER, "Time at which these statistics were last reset", nil, nil},
+},
+true,
+0,
+},
 "pg_stat_database": {
 map[string]ColumnMapping{
 "datid": {LABEL, "OID of a database", nil, nil},