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# export-to-postgresql.py: export perf data to a postgresql database
# Copyright (c) 2014, 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.
import os
import sys
import struct
import datetime
# To use this script you will need to have installed package python-pyside which
# provides LGPL-licensed Python bindings for Qt. You will also need the package
# libqt4-sql-psql for Qt postgresql support.
#
# The script assumes postgresql is running on the local machine and that the
# user has postgresql permissions to create databases. Examples of installing
# postgresql and adding such a user are:
#
# fedora:
#
# $ sudo yum install postgresql postgresql-server python-pyside qt-postgresql
# $ sudo su - postgres -c initdb
# $ sudo service postgresql start
# $ sudo su - postgres
# $ createuser <your user id here>
# Shall the new role be a superuser? (y/n) y
#
# ubuntu:
#
# $ sudo apt-get install postgresql python-pyside.qtsql libqt4-sql-psql
# $ sudo su - postgres
# $ createuser -s <your user id here>
#
# An example of using this script with Intel PT:
#
# $ perf record -e intel_pt//u ls
# $ perf script -s ~/libexec/perf-core/scripts/python/export-to-postgresql.py pt_example branches calls
# 2015-05-29 12:49:23.464364 Creating database...
# 2015-05-29 12:49:26.281717 Writing to intermediate files...
# 2015-05-29 12:49:27.190383 Copying to database...
# 2015-05-29 12:49:28.140451 Removing intermediate files...
# 2015-05-29 12:49:28.147451 Adding primary keys
# 2015-05-29 12:49:28.655683 Adding foreign keys
# 2015-05-29 12:49:29.365350 Done
#
# To browse the database, psql can be used e.g.
#
# $ psql pt_example
# pt_example=# select * from samples_view where id < 100;
# pt_example=# \d+
# pt_example=# \d+ samples_view
# pt_example=# \q
#
# An example of using the database is provided by the script
# call-graph-from-sql.py. Refer to that script for details.
#
# Tables:
#
# The tables largely correspond to perf tools' data structures. They are largely self-explanatory.
#
# samples
#
# 'samples' is the main table. It represents what instruction was executing at a point in time
# when something (a selected event) happened. The memory address is the instruction pointer or 'ip'.
#
# calls
#
# 'calls' represents function calls and is related to 'samples' by 'call_id' and 'return_id'.
# 'calls' is only created when the 'calls' option to this script is specified.
#
# call_paths
#
# 'call_paths' represents all the call stacks. Each 'call' has an associated record in 'call_paths'.
# 'calls_paths' is only created when the 'calls' option to this script is specified.
#
# branch_types
#
# 'branch_types' provides descriptions for each type of branch.
#
# comm_threads
#
# 'comm_threads' shows how 'comms' relates to 'threads'.
#
# comms
#
# 'comms' contains a record for each 'comm' - the name given to the executable that is running.
#
# dsos
#
# 'dsos' contains a record for each executable file or library.
#
# machines
#
# 'machines' can be used to distinguish virtual machines if virtualization is supported.
#
# selected_events
#
# 'selected_events' contains a record for each kind of event that has been sampled.
#
# symbols
#
# 'symbols' contains a record for each symbol. Only symbols that have samples are present.
#
# threads
#
# 'threads' contains a record for each thread.
#
# Views:
#
# Most of the tables have views for more friendly display. The views are:
#
# calls_view
# call_paths_view
# comm_threads_view
# dsos_view
# machines_view
# samples_view
# symbols_view
# threads_view
#
# More examples of browsing the database with psql:
# Note that some of the examples are not the most optimal SQL query.
# Note that call information is only available if the script's 'calls' option has been used.
#
# Top 10 function calls (not aggregated by symbol):
#
# SELECT * FROM calls_view ORDER BY elapsed_time DESC LIMIT 10;
#
# Top 10 function calls (aggregated by symbol):
#
# SELECT symbol_id,(SELECT name FROM symbols WHERE id = symbol_id) AS symbol,
# SUM(elapsed_time) AS tot_elapsed_time,SUM(branch_count) AS tot_branch_count
# FROM calls_view GROUP BY symbol_id ORDER BY tot_elapsed_time DESC LIMIT 10;
#
# Note that the branch count gives a rough estimation of cpu usage, so functions
# that took a long time but have a relatively low branch count must have spent time
# waiting.
#
# Find symbols by pattern matching on part of the name (e.g. names containing 'alloc'):
#
# SELECT * FROM symbols_view WHERE name LIKE '%alloc%';
#
# Top 10 function calls for a specific symbol (e.g. whose symbol_id is 187):
#
# SELECT * FROM calls_view WHERE symbol_id = 187 ORDER BY elapsed_time DESC LIMIT 10;
#
# Show function calls made by function in the same context (i.e. same call path) (e.g. one with call_path_id 254):
#
# SELECT * FROM calls_view WHERE parent_call_path_id = 254;
#
# Show branches made during a function call (e.g. where call_id is 29357 and return_id is 29370 and tid is 29670)
#
# SELECT * FROM samples_view WHERE id >= 29357 AND id <= 29370 AND tid = 29670 AND event LIKE 'branches%';
#
# Show transactions:
#
# SELECT * FROM samples_view WHERE event = 'transactions';
#
# Note transaction start has 'in_tx' true whereas, transaction end has 'in_tx' false.
# Transaction aborts have branch_type_name 'transaction abort'
#
# Show transaction aborts:
#
# SELECT * FROM samples_view WHERE event = 'transactions' AND branch_type_name = 'transaction abort';
#
# To print a call stack requires walking the call_paths table. For example this python script:
# #!/usr/bin/python2
#
# import sys
# from PySide.QtSql import *
#
# if __name__ == '__main__':
# if (len(sys.argv) < 3):
# print >> sys.stderr, "Usage is: printcallstack.py <database name> <call_path_id>"
# raise Exception("Too few arguments")
# dbname = sys.argv[1]
# call_path_id = sys.argv[2]
# db = QSqlDatabase.addDatabase('QPSQL')
# db.setDatabaseName(dbname)
# if not db.open():
# raise Exception("Failed to open database " + dbname + " error: " + db.lastError().text())
# query = QSqlQuery(db)
# print " id ip symbol_id symbol dso_id dso_short_name"
# while call_path_id != 0 and call_path_id != 1:
# ret = query.exec_('SELECT * FROM call_paths_view WHERE id = ' + str(call_path_id))
# if not ret:
# raise Exception("Query failed: " + query.lastError().text())
# if not query.next():
# raise Exception("Query failed")
# print "{0:>6} {1:>10} {2:>9} {3:<30} {4:>6} {5:<30}".format(query.value(0), query.value(1), query.value(2), query.value(3), query.value(4), query.value(5))
# call_path_id = query.value(6)
from PySide.QtSql import *
# Need to access PostgreSQL C library directly to use COPY FROM STDIN
from ctypes import *
libpq = CDLL("libpq.so.5")
PQconnectdb = libpq.PQconnectdb
PQconnectdb.restype = c_void_p
PQfinish = libpq.PQfinish
PQstatus = libpq.PQstatus
PQexec = libpq.PQexec
PQexec.restype = c_void_p
PQresultStatus = libpq.PQresultStatus
PQputCopyData = libpq.PQputCopyData
PQputCopyData.argtypes = [ c_void_p, c_void_p, c_int ]
PQputCopyEnd = libpq.PQputCopyEnd
PQputCopyEnd.argtypes = [ c_void_p, c_void_p ]
sys.path.append(os.environ['PERF_EXEC_PATH'] + \
'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
# These perf imports are not used at present
#from perf_trace_context import *
#from Core import *
perf_db_export_mode = True
perf_db_export_calls = False
perf_db_export_callchains = False
def usage():
print >> sys.stderr, "Usage is: export-to-postgresql.py <database name> [<columns>] [<calls>] [<callchains>]"
print >> sys.stderr, "where: columns 'all' or 'branches'"
print >> sys.stderr, " calls 'calls' => create calls and call_paths table"
print >> sys.stderr, " callchains 'callchains' => create call_paths table"
raise Exception("Too few arguments")
if (len(sys.argv) < 2):
usage()
dbname = sys.argv[1]
if (len(sys.argv) >= 3):
columns = sys.argv[2]
else:
columns = "all"
if columns not in ("all", "branches"):
usage()
branches = (columns == "branches")
for i in range(3,len(sys.argv)):
if (sys.argv[i] == "calls"):
perf_db_export_calls = True
elif (sys.argv[i] == "callchains"):
perf_db_export_callchains = True
else:
usage()
output_dir_name = os.getcwd() + "/" + dbname + "-perf-data"
os.mkdir(output_dir_name)
def do_query(q, s):
if (q.exec_(s)):
return
raise Exception("Query failed: " + q.lastError().text())
print datetime.datetime.today(), "Creating database..."
db = QSqlDatabase.addDatabase('QPSQL')
query = QSqlQuery(db)
db.setDatabaseName('postgres')
db.open()
try:
do_query(query, 'CREATE DATABASE ' + dbname)
except:
os.rmdir(output_dir_name)
raise
query.finish()
query.clear()
db.close()
db.setDatabaseName(dbname)
db.open()
query = QSqlQuery(db)
do_query(query, 'SET client_min_messages TO WARNING')
do_query(query, 'CREATE TABLE selected_events ('
'id bigint NOT NULL,'
'name varchar(80))')
do_query(query, 'CREATE TABLE machines ('
'id bigint NOT NULL,'
'pid integer,'
'root_dir varchar(4096))')
do_query(query, 'CREATE TABLE threads ('
'id bigint NOT NULL,'
'machine_id bigint,'
'process_id bigint,'
'pid integer,'
'tid integer)')
do_query(query, 'CREATE TABLE comms ('
'id bigint NOT NULL,'
'comm varchar(16))')
do_query(query, 'CREATE TABLE comm_threads ('
'id bigint NOT NULL,'
'comm_id bigint,'
'thread_id bigint)')
do_query(query, 'CREATE TABLE dsos ('
'id bigint NOT NULL,'
'machine_id bigint,'
'short_name varchar(256),'
'long_name varchar(4096),'
'build_id varchar(64))')
do_query(query, 'CREATE TABLE symbols ('
'id bigint NOT NULL,'
'dso_id bigint,'
'sym_start bigint,'
'sym_end bigint,'
'binding integer,'
'name varchar(2048))')
do_query(query, 'CREATE TABLE branch_types ('
'id integer NOT NULL,'
'name varchar(80))')
if branches:
do_query(query, 'CREATE TABLE samples ('
'id bigint NOT NULL,'
'evsel_id bigint,'
'machine_id bigint,'
'thread_id bigint,'
'comm_id bigint,'
'dso_id bigint,'
'symbol_id bigint,'
'sym_offset bigint,'
'ip bigint,'
'time bigint,'
'cpu integer,'
'to_dso_id bigint,'
'to_symbol_id bigint,'
'to_sym_offset bigint,'
'to_ip bigint,'
'branch_type integer,'
'in_tx boolean,'
'call_path_id bigint)')
else:
do_query(query, 'CREATE TABLE samples ('
'id bigint NOT NULL,'
'evsel_id bigint,'
'machine_id bigint,'
'thread_id bigint,'
'comm_id bigint,'
'dso_id bigint,'
'symbol_id bigint,'
'sym_offset bigint,'
'ip bigint,'
'time bigint,'
'cpu integer,'
'to_dso_id bigint,'
'to_symbol_id bigint,'
'to_sym_offset bigint,'
'to_ip bigint,'
'period bigint,'
'weight bigint,'
'transaction bigint,'
'data_src bigint,'
'branch_type integer,'
'in_tx boolean,'
'call_path_id bigint)')
if perf_db_export_calls or perf_db_export_callchains:
do_query(query, 'CREATE TABLE call_paths ('
'id bigint NOT NULL,'
'parent_id bigint,'
'symbol_id bigint,'
'ip bigint)')
if perf_db_export_calls:
do_query(query, 'CREATE TABLE calls ('
'id bigint NOT NULL,'
'thread_id bigint,'
'comm_id bigint,'
'call_path_id bigint,'
'call_time bigint,'
'return_time bigint,'
'branch_count bigint,'
'call_id bigint,'
'return_id bigint,'
'parent_call_path_id bigint,'
'flags integer)')
do_query(query, 'CREATE VIEW machines_view AS '
'SELECT '
'id,'
'pid,'
'root_dir,'
'CASE WHEN id=0 THEN \'unknown\' WHEN pid=-1 THEN \'host\' ELSE \'guest\' END AS host_or_guest'
'
|