--- /dev/null
+// p_s - library routines for pstop.
+//
+// This file contains the library routines for managing the
+// table_io_waits_by_table table.
+package table_io_waits_summary_by_table
+
+import (
+ "database/sql"
+ "fmt"
+ "time"
+
+ "github.com/sjmudd/pstop/lib"
+ "github.com/sjmudd/pstop/p_s"
+)
+
+// a table of rows
+type Table_io_waits_summary_by_table struct {
+ p_s.RelativeStats
+ p_s.InitialTime
+ want_latency bool
+ initial table_io_waits_summary_by_table_rows // initial data for relative values
+ current table_io_waits_summary_by_table_rows // last loaded values
+ results table_io_waits_summary_by_table_rows // results (maybe with subtraction)
+ totals table_io_waits_summary_by_table_row // totals of results
+}
+
+func (t *Table_io_waits_summary_by_table) SetWantsLatency(want_latency bool) {
+ t.want_latency = want_latency
+}
+
+func (t Table_io_waits_summary_by_table) WantsLatency() bool {
+ return t.want_latency
+}
+
+// Collect() collects data from the db, updating initial
+// values if needed, and then subtracting initial values if we want
+// relative values, after which it stores totals.
+func (t *Table_io_waits_summary_by_table) Collect(dbh *sql.DB) {
+ start := time.Now()
+ // lib.Logger.Println("Table_io_waits_summary_by_table.Collect() BEGIN")
+ t.current = select_tiwsbt_rows(dbh)
+ lib.Logger.Println("t.current collected", len(t.current), "row(s) from SELECT")
+
+ if len(t.initial) == 0 && len(t.current) > 0 {
+ lib.Logger.Println("t.initial: copying from t.current (initial setup)")
+ t.initial = make(table_io_waits_summary_by_table_rows, len(t.current))
+ copy(t.initial, t.current)
+ }
+
+ // check for reload initial characteristics
+ if t.initial.needs_refresh(t.current) {
+ lib.Logger.Println("t.initial: copying from t.current (data needs refreshing)")
+ t.initial = make(table_io_waits_summary_by_table_rows, len(t.current))
+ copy(t.initial, t.current)
+ }
+
+ t.make_results()
+
+ // lib.Logger.Println( "t.initial:", t.initial )
+ // lib.Logger.Println( "t.current:", t.current )
+ lib.Logger.Println("t.initial.totals():", t.initial.totals())
+ lib.Logger.Println("t.current.totals():", t.current.totals())
+ // lib.Logger.Println("t.results:", t.results)
+ // lib.Logger.Println("t.totals:", t.totals)
+ lib.Logger.Println("Table_io_waits_summary_by_table.Collect() END, took:", time.Duration(time.Since(start)).String())
+}
+
+func (t *Table_io_waits_summary_by_table) make_results() {
+ // lib.Logger.Println( "- t.results set from t.current" )
+ t.results = make(table_io_waits_summary_by_table_rows, len(t.current))
+ copy(t.results, t.current)
+ if t.WantRelativeStats() {
+ // lib.Logger.Println( "- subtracting t.initial from t.results as WantRelativeStats()" )
+ t.results.subtract(t.initial)
+ }
+
+ // lib.Logger.Println( "- sorting t.results" )
+ t.results.Sort(t.want_latency)
+ // lib.Logger.Println( "- collecting t.totals from t.results" )
+ t.totals = t.results.totals()
+}
+
+// reset the statistics to current values
+func (t *Table_io_waits_summary_by_table) SyncReferenceValues() {
+ // lib.Logger.Println( "Table_io_waits_summary_by_table.SyncReferenceValues() BEGIN" )
+
+ t.initial = make(table_io_waits_summary_by_table_rows, len(t.current))
+ copy(t.initial, t.current)
+
+ t.make_results()
+
+ // lib.Logger.Println( "Table_io_waits_summary_by_table.SyncReferenceValues() END" )
+}
+
+func (t *Table_io_waits_summary_by_table) Headings() string {
+ if t.want_latency {
+ return t.latencyHeadings()
+ } else {
+ return t.opsHeadings()
+ }
+}
+
+func (t Table_io_waits_summary_by_table) RowContent(max_rows int) []string {
+ if t.want_latency {
+ return t.latencyRowContent(max_rows)
+ } else {
+ return t.opsRowContent(max_rows)
+ }
+}
+
+func (t Table_io_waits_summary_by_table) EmptyRowContent() string {
+ if t.want_latency {
+ return t.emptyLatencyRowContent()
+ } else {
+ return t.emptyOpsRowContent()
+ }
+}
+
+func (t Table_io_waits_summary_by_table) TotalRowContent() string {
+ if t.want_latency {
+ return t.totalLatencyRowContent()
+ } else {
+ return t.totalOpsRowContent()
+ }
+}
+
+func (t Table_io_waits_summary_by_table) Description() string {
+ if t.want_latency {
+ return t.latencyDescription()
+ } else {
+ return t.opsDescription()
+ }
+}
+
+func (t *Table_io_waits_summary_by_table) latencyHeadings() string {
+ var r table_io_waits_summary_by_table_row
+
+ return r.latency_headings()
+}
+
+func (t *Table_io_waits_summary_by_table) opsHeadings() string {
+ var r table_io_waits_summary_by_table_row
+
+ return r.ops_headings()
+}
+
+func (t Table_io_waits_summary_by_table) opsRowContent(max_rows int) []string {
+ rows := make([]string, 0, max_rows)
+
+ for i := range t.results {
+ if i < max_rows {
+ rows = append(rows, t.results[i].ops_row_content(t.totals))
+ }
+ }
+
+ return rows
+}
+
+func (t Table_io_waits_summary_by_table) latencyRowContent(max_rows int) []string {
+ rows := make([]string, 0, max_rows)
+
+ for i := range t.results {
+ if i < max_rows {
+ rows = append(rows, t.results[i].latency_row_content(t.totals))
+ }
+ }
+
+ return rows
+}
+
+func (t Table_io_waits_summary_by_table) emptyOpsRowContent() string {
+ var r table_io_waits_summary_by_table_row
+
+ return r.ops_row_content(r)
+}
+
+func (t Table_io_waits_summary_by_table) emptyLatencyRowContent() string {
+ var r table_io_waits_summary_by_table_row
+
+ return r.latency_row_content(r)
+}
+
+func (t Table_io_waits_summary_by_table) totalOpsRowContent() string {
+ return t.totals.ops_row_content(t.totals)
+}
+
+func (t Table_io_waits_summary_by_table) totalLatencyRowContent() string {
+ return t.totals.latency_row_content(t.totals)
+}
+
+func (t Table_io_waits_summary_by_table) latencyDescription() string {
+ count := t.count_rows()
+ return fmt.Sprintf("Latency by Table Name (table_io_waits_summary_by_table) %d rows", count)
+}
+
+func (t Table_io_waits_summary_by_table) opsDescription() string {
+ count := t.count_rows()
+ return fmt.Sprintf("Operations by Table Name (table_io_waits_summary_by_table) %d rows", count)
+}
+
+func (t Table_io_waits_summary_by_table) count_rows() int {
+ var count int
+ for row := range t.results {
+ if t.results[row].SUM_TIMER_WAIT > 0 {
+ count++
+ }
+ }
+ return count
+}
git://git.iain.cx/iain / pstop.git / blobdiff