| Disable Functions: Path : /usr/libexec/perf-core/scripts/python/ |
| Current File : //usr/libexec/perf-core/scripts/python/call-graph-from-sql.py |
#!/usr/bin/python2
# call-graph-from-sql.py: create call-graph from sql database
# Copyright (c) 2014-2017, Intel Corporation.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms and conditions of the GNU General Public License,
# version 2, as published by the Free Software Foundation.
#
# This program is distributed in the hope it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
# To use this script you will need to have exported data using either the
# export-to-sqlite.py or the export-to-postgresql.py script. Refer to those
# scripts for details.
#
# Following on from the example in the export scripts, a
# call-graph can be displayed for the pt_example database like this:
#
# python tools/perf/scripts/python/call-graph-from-sql.py pt_example
#
# Note that for PostgreSQL, this script supports connecting to remote databases
# by setting hostname, port, username, password, and dbname e.g.
#
# python tools/perf/scripts/python/call-graph-from-sql.py "hostname=myhost username=myuser password=mypassword dbname=pt_example"
#
# The result is a GUI window with a tree representing a context-sensitive
# call-graph. Expanding a couple of levels of the tree and adjusting column
# widths to suit will display something like:
#
# Call Graph: pt_example
# Call Path Object Count Time(ns) Time(%) Branch Count Branch Count(%)
# v- ls
# v- 2638:2638
# v- _start ld-2.19.so 1 10074071 100.0 211135 100.0
# |- unknown unknown 1 13198 0.1 1 0.0
# >- _dl_start ld-2.19.so 1 1400980 13.9 19637 9.3
# >- _d_linit_internal ld-2.19.so 1 448152 4.4 11094 5.3
# v-__libc_start_main@plt ls 1 8211741 81.5 180397 85.4
# >- _dl_fixup ld-2.19.so 1 7607 0.1 108 0.1
# >- __cxa_atexit libc-2.19.so 1 11737 0.1 10 0.0
# >- __libc_csu_init ls 1 10354 0.1 10 0.0
# |- _setjmp libc-2.19.so 1 0 0.0 4 0.0
# v- main ls 1 8182043 99.6 180254 99.9
#
# Points to note:
# The top level is a command name (comm)
# The next level is a thread (pid:tid)
# Subsequent levels are functions
# 'Count' is the number of calls
# 'Time' is the elapsed time until the function returns
# Percentages are relative to the level above
# 'Branch Count' is the total number of branches for that function and all
# functions that it calls
import sys
from PySide.QtCore import *
from PySide.QtGui import *
from PySide.QtSql import *
from decimal import *
class TreeItem():
def __init__(self, db, row, parent_item):
self.db = db
self.row = row
self.parent_item = parent_item
self.query_done = False;
self.child_count = 0
self.child_items = []
self.data = ["", "", "", "", "", "", ""]
self.comm_id = 0
self.thread_id = 0
self.call_path_id = 1
self.branch_count = 0
self.time = 0
if not parent_item:
self.setUpRoot()
def setUpRoot(self):
self.query_done = True
query = QSqlQuery(self.db)
ret = query.exec_('SELECT id, comm FROM comms')
if not ret:
raise Exception("Query failed: " + query.lastError().text())
while query.next():
if not query.value(0):
continue
child_item = TreeItem(self.db, self.child_count, self)
self.child_items.append(child_item)
self.child_count += 1
child_item.setUpLevel1(query.value(0), query.value(1))
def setUpLevel1(self, comm_id, comm):
self.query_done = True;
self.comm_id = comm_id
self.data[0] = comm
self.child_items = []
self.child_count = 0
query = QSqlQuery(self.db)
ret = query.exec_('SELECT thread_id, ( SELECT pid FROM threads WHERE id = thread_id ), ( SELECT tid FROM threads WHERE id = thread_id ) FROM comm_threads WHERE comm_id = ' + str(comm_id))
if not ret:
raise Exception("Query failed: " + query.lastError().text())
while query.next():
child_item = TreeItem(self.db, self.child_count, self)
self.child_items.append(child_item)
self.child_count += 1
child_item.setUpLevel2(comm_id, query.value(0), query.value(1), query.value(2))
def setUpLevel2(self, comm_id, thread_id, pid, tid):
self.comm_id = comm_id
self.thread_id = thread_id
self.data[0] = str(pid) + ":" + str(tid)
def getChildItem(self, row):
return self.child_items[row]
def getParentItem(self):
return self.parent_item
def getRow(self):
return self.row
def timePercent(self, b):
if not self.time:
return "0.0"
x = (b * Decimal(100)) / self.time
return str(x.quantize(Decimal('.1'), rounding=ROUND_HALF_UP))
def branchPercent(self, b):
if not self.branch_count:
return "0.0"
x = (b * Decimal(100)) / self.branch_count
return str(x.quantize(Decimal('.1'), rounding=ROUND_HALF_UP))
def addChild(self, call_path_id, name, dso, count, time, branch_count):
child_item = TreeItem(self.db, self.child_count, self)
child_item.comm_id = self.comm_id
child_item.thread_id = self.thread_id
child_item.call_path_id = call_path_id
child_item.branch_count = branch_count
child_item.time = time
child_item.data[0] = name
if dso == "[kernel.kallsyms]":
dso = "[kernel]"
child_item.data[1] = dso
child_item.data[2] = str(count)
child_item.data[3] = str(time)
child_item.data[4] = self.timePercent(time)
child_item.data[5] = str(branch_count)
child_item.data[6] = self.branchPercent(branch_count)
self.child_items.append(child_item)
self.child_count += 1
def selectCalls(self):
self.query_done = True;
query = QSqlQuery(self.db)
ret = query.exec_('SELECT id, call_path_id, branch_count, call_time, return_time, '
'( SELECT name FROM symbols WHERE id = ( SELECT symbol_id FROM call_paths WHERE id = call_path_id ) ), '
'( SELECT short_name FROM dsos WHERE id = ( SELECT dso_id FROM symbols WHERE id = ( SELECT symbol_id FROM call_paths WHERE id = call_path_id ) ) ), '
'( SELECT ip FROM call_paths where id = call_path_id ) '
'FROM calls WHERE parent_call_path_id = ' + str(self.call_path_id) + ' AND comm_id = ' + str(self.comm_id) + ' AND thread_id = ' + str(self.thread_id) +
' ORDER BY call_path_id')
if not ret:
raise Exception("Query failed: " + query.lastError().text())
last_call_path_id = 0
name = ""
dso = ""
count = 0
branch_count = 0
total_branch_count = 0
time = 0
total_time = 0
while query.next():
if query.value(1) == last_call_path_id:
count += 1
branch_count += query.value(2)
time += query.value(4) - query.value(3)
else:
if count:
self.addChild(last_call_path_id, name, dso, count, time, branch_count)
last_call_path_id = query.value(1)
name = query.value(5)
dso = query.value(6)
count = 1
total_branch_count += branch_count
total_time += time
branch_count = query.value(2)
time = query.value(4) - query.value(3)
if count:
self.addChild(last_call_path_id, name, dso, count, time, branch_count)
total_branch_count += branch_count
total_time += time
# Top level does not have time or branch count, so fix that here
if total_branch_count > self.branch_count:
self.branch_count = total_branch_count
if self.branch_count:
for child_item in self.child_items:
child_item.data[6] = self.branchPercent(child_item.branch_count)
if total_time > self.time:
self.time = total_time
if self.time:
for child_item in self.child_items:
child_item.data[4] = self.timePercent(child_item.time)
def childCount(self):
if not self.query_done:
self.selectCalls()
return self.child_count
def columnCount(self):
return 7
def columnHeader(self, column):
headers = ["Call Path", "Object", "Count ", "Time (ns) ", "Time (%) ", "Branch Count ", "Branch Count (%) "]
return headers[column]
def getData(self, column):
return self.data[column]
class TreeModel(QAbstractItemModel):
def __init__(self, db, parent=None):
super(TreeModel, self).__init__(parent)
self.db = db
self.root = TreeItem(db, 0, None)
def columnCount(self, parent):
return self.root.columnCount()
def rowCount(self, parent):
if parent.isValid():
parent_item = parent.internalPointer()
else:
parent_item = self.root
return parent_item.childCount()
def headerData(self, section, orientation, role):
if role == Qt.TextAlignmentRole:
if section > 1:
return Qt.AlignRight
if role != Qt.DisplayRole:
return None
if orientation != Qt.Horizontal:
return None
return self.root.columnHeader(section)
def parent(self, child):
child_item = child.internalPointer()
if child_item is self.root:
return QModelIndex()
parent_item = child_item.getParentItem()
return self.createIndex(parent_item.getRow(), 0, parent_item)
def index(self, row, column, parent):
if parent.isValid():
parent_item = parent.internalPointer()
else:
parent_item = self.root
child_item = parent_item.getChildItem(row)
return self.createIndex(row, column, child_item)
def data(self, index, role):
if role == Qt.TextAlignmentRole:
if index.column() > 1:
return Qt.AlignRight
if role != Qt.DisplayRole:
return None
index_item = index.internalPointer()
return index_item.getData(index.column())
class MainWindow(QMainWindow):
def __init__(self, db, dbname, parent=None):
super(MainWindow, self).__init__(parent)
self.setObjectName("MainWindow")
self.setWindowTitle("Call Graph: " + dbname)
self.move(100, 100)
self.resize(800, 600)
style = self.style()
icon = style.standardIcon(QStyle.SP_MessageBoxInformation)
self.setWindowIcon(icon);
self.model = TreeModel(db)
self.view = QTreeView()
self.view.setModel(self.model)
self.setCentralWidget(self.view)
if __name__ == '__main__':
if (len(sys.argv) < 2):
print >> sys.stderr, "Usage is: call-graph-from-sql.py <database name>"
raise Exception("Too few arguments")
dbname = sys.argv[1]
is_sqlite3 = False
try:
f = open(dbname)
if f.read(15) == "SQLite format 3":
is_sqlite3 = True
f.close()
except:
pass
if is_sqlite3:
db = QSqlDatabase.addDatabase('QSQLITE')
else:
db = QSqlDatabase.addDatabase('QPSQL')
opts = dbname.split()
for opt in opts:
if '=' in opt:
opt = opt.split('=')
if opt[0] == 'hostname':
db.setHostName(opt[1])
elif opt[0] == 'port':
db.setPort(int(opt[1]))
elif opt[0] == 'username':
db.setUserName(opt[1])
elif opt[0] == 'password':
db.setPassword(opt[1])
elif opt[0] == 'dbname':
dbname = opt[1]
else:
dbname = opt
db.setDatabaseName(dbname)
if not db.open():
raise Exception("Failed to open database " + dbname + " error: " + db.lastError().text())
app = QApplication(sys.argv)
window = MainWindow(db, dbname)
window.show()
err = app.exec_()
db.close()
sys.exit(err)