+++ /dev/null
-// This file contains the library routines for managing the
-// table_lock_waits_summary_by_table table.
-package ps_table
-
-/* *****
-import (
- "database/sql"
- "fmt"
- _ "github.com/go-sql-driver/mysql"
- "log"
- "sort"
- "strings"
-
- "github.com/sjmudd/pstop/lib"
-)
-
-type table_lock_waits_summary_by_table_row struct {
- OBJECT_TYPE string // in theory redundant but keep anyway
- OBJECT_SCHEMA string // in theory redundant but keep anyway
- OBJECT_NAME string // in theory redundant but keep anyway
- COUNT_STAR int
-
- SUM_TIMER_WAIT int
- SUM_TIMER_READ int
- SUM_TIMER_WRITE int
-
- SUM_TIMER_READ_WITH_SHARED_LOCKS int
- SUM_TIMER_READ_HIGH_PRIORITY int
- SUM_TIMER_READ_NO_INSERT int
- SUM_TIMER_READ_NORMAL int
- SUM_TIMER_READ_EXTERNAL int
-
- SUM_TIMER_WRITE_ALLOW_WRITE int
- SUM_TIMER_WRITE_CONCURRENT_INSERT int
- SUM_TIMER_WRITE_DELAYED int
- SUM_TIMER_WRITE_LOW_PRIORITY int
- SUM_TIMER_WRITE_NORMAL int
- SUM_TIMER_WRITE_EXTERNAL int
-}
-
-type table_lock_waits_summary_by_table_rows []table_lock_waits_summary_by_table_row
-
-// return the table name from the columns as '<schema>.<table>'
-func (r *table_lock_waits_summary_by_table_row) name() string {
- var n string
- if len(r.OBJECT_SCHEMA) > 0 {
- n += r.OBJECT_SCHEMA
- }
- if len(n) > 0 {
- if len(r.OBJECT_NAME) > 0 {
- n += "." + r.OBJECT_NAME
- }
- } else {
- if len(r.OBJECT_NAME) > 0 {
- n += r.OBJECT_NAME
- }
- }
- return n
-}
-
-func (r *table_lock_waits_summary_by_table_row) pretty_name() string {
- s := r.name()
- if len(s) > 30 {
- s = s[:29]
- }
- return fmt.Sprintf("%-30s", s)
-}
-
-// Table Name Latency %| Read Write|S.Lock High NoIns Normal Extrnl|AlloWr CncIns WrtDly Low Normal Extrnl|
-// xxxxxxxxxxxxxxxxxxxxxxxxxxxxx 1234567890 100.0%|xxxxx% xxxxx%|xxxxx% xxxxx% xxxxx% xxxxx% xxxxx%|xxxxx% xxxxx% xxxxx% xxxxx% xxxxx% xxxxx%|
-func (r *table_lock_waits_summary_by_table_row) headings() string {
- return fmt.Sprintf("%-30s %10s %6s|%6s %6s|%6s %6s %6s %6s %6s|%6s %6s %6s %6s %6s %6s",
- "Table Name", "Latency", "%",
- "Read", "Write",
- "S.Lock", "High", "NoIns", "Normal", "Extrnl",
- "AlloWr", "CncIns", "WrtDly", "Low", "Normal", "Extrnl")
-}
-
-// generate a printable result
-func (r *table_lock_waits_summary_by_table_row) row_content(totals table_lock_waits_summary_by_table_row) string {
-
- // assume the data is empty so hide it.
- name := r.pretty_name()
- if r.COUNT_STAR == 0 {
- name = ""
- }
-
- return fmt.Sprintf("%-30s %10s %6s|%6s %6s|%6s %6s %6s %6s %6s|%6s %6s %6s %6s %6s %6s",
- name,
- lib.FormatTime(r.SUM_TIMER_WAIT),
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_WAIT, totals.SUM_TIMER_WAIT)),
-
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_READ, r.SUM_TIMER_WAIT)),
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_WRITE, r.SUM_TIMER_WAIT)),
-
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_READ_WITH_SHARED_LOCKS, r.SUM_TIMER_WAIT)),
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_READ_HIGH_PRIORITY, r.SUM_TIMER_WAIT)),
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_READ_NO_INSERT, r.SUM_TIMER_WAIT)),
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_READ_NORMAL, r.SUM_TIMER_WAIT)),
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_READ_EXTERNAL, r.SUM_TIMER_WAIT)),
-
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_WRITE_ALLOW_WRITE, r.SUM_TIMER_WAIT)),
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_WRITE_CONCURRENT_INSERT, r.SUM_TIMER_WAIT)),
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_WRITE_DELAYED, r.SUM_TIMER_WAIT)),
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_WRITE_LOW_PRIORITY, r.SUM_TIMER_WAIT)),
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_WRITE_NORMAL, r.SUM_TIMER_WAIT)),
- lib.FormatPct(lib.MyDivide(r.SUM_TIMER_WRITE_EXTERNAL, r.SUM_TIMER_WAIT)))
-}
-
-func (this *table_lock_waits_summary_by_table_row) add(other table_lock_waits_summary_by_table_row) {
- this.COUNT_STAR += other.COUNT_STAR
- this.SUM_TIMER_WAIT += other.SUM_TIMER_WAIT
- this.SUM_TIMER_READ += other.SUM_TIMER_READ
- this.SUM_TIMER_WRITE += other.SUM_TIMER_WRITE
- this.SUM_TIMER_READ_WITH_SHARED_LOCKS += other.SUM_TIMER_READ_WITH_SHARED_LOCKS
- this.SUM_TIMER_READ_HIGH_PRIORITY += other.SUM_TIMER_READ_HIGH_PRIORITY
- this.SUM_TIMER_READ_NO_INSERT += other.SUM_TIMER_READ_NO_INSERT
- this.SUM_TIMER_READ_NORMAL += other.SUM_TIMER_READ_NORMAL
- this.SUM_TIMER_READ_EXTERNAL += other.SUM_TIMER_READ_EXTERNAL
- this.SUM_TIMER_WRITE_CONCURRENT_INSERT += other.SUM_TIMER_WRITE_CONCURRENT_INSERT
- this.SUM_TIMER_WRITE_DELAYED += other.SUM_TIMER_WRITE_DELAYED
- this.SUM_TIMER_WRITE_LOW_PRIORITY += other.SUM_TIMER_WRITE_LOW_PRIORITY
- this.SUM_TIMER_WRITE_NORMAL += other.SUM_TIMER_WRITE_NORMAL
- this.SUM_TIMER_WRITE_EXTERNAL += other.SUM_TIMER_WRITE_EXTERNAL
-}
-
-func (this *table_lock_waits_summary_by_table_row) subtract(other table_lock_waits_summary_by_table_row) {
- this.COUNT_STAR -= other.COUNT_STAR
- this.SUM_TIMER_WAIT -= other.SUM_TIMER_WAIT
- this.SUM_TIMER_READ -= other.SUM_TIMER_READ
- this.SUM_TIMER_WRITE -= other.SUM_TIMER_WRITE
- this.SUM_TIMER_READ_WITH_SHARED_LOCKS -= other.SUM_TIMER_READ_WITH_SHARED_LOCKS
- this.SUM_TIMER_READ_HIGH_PRIORITY -= other.SUM_TIMER_READ_HIGH_PRIORITY
- this.SUM_TIMER_READ_NO_INSERT -= other.SUM_TIMER_READ_NO_INSERT
- this.SUM_TIMER_READ_NORMAL -= other.SUM_TIMER_READ_NORMAL
- this.SUM_TIMER_READ_EXTERNAL -= other.SUM_TIMER_READ_EXTERNAL
- this.SUM_TIMER_WRITE_CONCURRENT_INSERT -= other.SUM_TIMER_WRITE_CONCURRENT_INSERT
- this.SUM_TIMER_WRITE_DELAYED -= other.SUM_TIMER_WRITE_DELAYED
- this.SUM_TIMER_WRITE_LOW_PRIORITY -= other.SUM_TIMER_WRITE_LOW_PRIORITY
- this.SUM_TIMER_WRITE_NORMAL -= other.SUM_TIMER_WRITE_NORMAL
- this.SUM_TIMER_WRITE_EXTERNAL -= other.SUM_TIMER_WRITE_EXTERNAL
-}
-
-// return the totals of a slice of rows
-func (t table_lock_waits_summary_by_table_rows) totals() table_lock_waits_summary_by_table_row {
- var totals table_lock_waits_summary_by_table_row
- totals.OBJECT_SCHEMA = "TOTALS"
-
- for i := range t {
- totals.add(t[i])
- }
-
- return totals
-}
-
-// Select the raw data from the database into file_summary_by_instance_rows
-// - filter out empty values
-// - merge rows with the same name into a single row
-// - change FILE_NAME into a more descriptive value.
-func select_tlwsbt_rows(dbh *sql.DB) table_lock_waits_summary_by_table_rows {
- var t table_lock_waits_summary_by_table_rows
-
- sql := "SELECT OBJECT_TYPE, OBJECT_SCHEMA, OBJECT_NAME, COUNT_STAR, SUM_TIMER_WAIT, SUM_TIMER_READ, SUM_TIMER_WRITE, SUM_TIMER_READ_WITH_SHARED_LOCKS, SUM_TIMER_READ_HIGH_PRIORITY, SUM_TIMER_READ_NO_INSERT, SUM_TIMER_READ_NORMAL, SUM_TIMER_READ_EXTERNAL, SUM_TIMER_WRITE_ALLOW_WRITE, SUM_TIMER_WRITE_CONCURRENT_INSERT, SUM_TIMER_WRITE_DELAYED, SUM_TIMER_WRITE_LOW_PRIORITY, SUM_TIMER_WRITE_NORMAL, SUM_TIMER_WRITE_EXTERNAL FROM table_lock_waits_summary_by_table WHERE COUNT_STAR > 0"
-
- rows, err := dbh.Query(sql)
- if err != nil {
- log.Fatal(err)
- }
- defer rows.Close()
-
- for rows.Next() {
- var r table_lock_waits_summary_by_table_row
- if err := rows.Scan(
- &r.OBJECT_TYPE,
- &r.OBJECT_SCHEMA,
- &r.OBJECT_NAME,
- &r.COUNT_STAR,
- &r.SUM_TIMER_WAIT,
- &r.SUM_TIMER_READ,
- &r.SUM_TIMER_WRITE,
- &r.SUM_TIMER_READ_WITH_SHARED_LOCKS,
- &r.SUM_TIMER_READ_HIGH_PRIORITY,
- &r.SUM_TIMER_READ_NO_INSERT,
- &r.SUM_TIMER_READ_NORMAL,
- &r.SUM_TIMER_READ_EXTERNAL,
- &r.SUM_TIMER_WRITE_ALLOW_WRITE,
- &r.SUM_TIMER_WRITE_CONCURRENT_INSERT,
- &r.SUM_TIMER_WRITE_DELAYED,
- &r.SUM_TIMER_WRITE_LOW_PRIORITY,
- &r.SUM_TIMER_WRITE_NORMAL,
- &r.SUM_TIMER_WRITE_EXTERNAL); err != nil {
- log.Fatal(err)
- }
- // we collect all data as we may need it later
- t = append(t, r)
- }
- if err := rows.Err(); err != nil {
- log.Fatal(err)
- }
-
- return t
-}
-
-func (t table_lock_waits_summary_by_table_rows) Len() int { return len(t) }
-func (t table_lock_waits_summary_by_table_rows) Swap(i, j int) { t[i], t[j] = t[j], t[i] }
-func (t table_lock_waits_summary_by_table_rows) Less(i, j int) bool {
- return (t[i].SUM_TIMER_WAIT > t[j].SUM_TIMER_WAIT) ||
- ((t[i].SUM_TIMER_WAIT == t[j].SUM_TIMER_WAIT) &&
- (t[i].OBJECT_SCHEMA < t[j].OBJECT_SCHEMA) &&
- (t[i].OBJECT_NAME < t[j].OBJECT_NAME))
-
-}
-
-// sort the data
-func (t *table_lock_waits_summary_by_table_rows) sort() {
- sort.Sort(t)
-}
-
-// remove the initial values from those rows where there's a match
-// - if we find a row we can't match ignore it
-func (this *table_lock_waits_summary_by_table_rows) subtract(initial table_lock_waits_summary_by_table_rows) {
- i_by_name := make(map[string]int)
-
- // iterate over rows by name
- for i := range initial {
- i_by_name[initial[i].name()] = i
- }
-
- for i := range *this {
- if _, ok := i_by_name[(*this)[i].name()]; ok {
- initial_i := i_by_name[(*this)[i].name()]
- (*this)[i].subtract(initial[initial_i])
- }
- }
-}
-
-// if the data in t2 is "newer", "has more values" than t then it needs refreshing.
-// check this by comparing totals.
-func (t table_lock_waits_summary_by_table_rows) needs_refresh(t2 table_lock_waits_summary_by_table_rows) bool {
- my_totals := t.totals()
- t2_totals := t2.totals()
-
- return my_totals.SUM_TIMER_WAIT > t2_totals.SUM_TIMER_WAIT
-}
-
-// describe a whole row
-func (r table_lock_waits_summary_by_table_row) String() string {
- return fmt.Sprintf("%-30s|%10s %10s %10s|%10s %10s %10s %10s %10s|%10s %10s %10s %10s %10s %10s",
- r.pretty_name(),
- lib.FormatTime(r.SUM_TIMER_WAIT),
- lib.FormatTime(r.SUM_TIMER_READ),
- lib.FormatTime(r.SUM_TIMER_WRITE),
-
- lib.FormatTime(r.SUM_TIMER_READ_WITH_SHARED_LOCKS),
- lib.FormatTime(r.SUM_TIMER_READ_HIGH_PRIORITY),
- lib.FormatTime(r.SUM_TIMER_READ_NO_INSERT),
- lib.FormatTime(r.SUM_TIMER_READ_NORMAL),
- lib.FormatTime(r.SUM_TIMER_READ_EXTERNAL),
-
- lib.FormatTime(r.SUM_TIMER_WRITE_ALLOW_WRITE),
- lib.FormatTime(r.SUM_TIMER_WRITE_CONCURRENT_INSERT),
- lib.FormatTime(r.SUM_TIMER_WRITE_DELAYED),
- lib.FormatTime(r.SUM_TIMER_WRITE_LOW_PRIORITY),
- lib.FormatTime(r.SUM_TIMER_WRITE_NORMAL),
- lib.FormatTime(r.SUM_TIMER_WRITE_EXTERNAL))
-}
-
-// describe a whole table
-func (t table_lock_waits_summary_by_table_rows) String() string {
- s := make([]string, len(t))
-
- for i := range t {
- s = append(s, t[i].String())
- }
-
- return strings.Join(s, "\n")
-}
-
-***** */