[tip:perf/core] perf script: Add Python script to export to postgresql
From: tip-bot for Adrian Hunter
Date: Thu Oct 30 2014 - 02:48:33 EST
Commit-ID: 2987e32f75dcb40bce0f3ab1d5d48cc1c580fd8b
Gitweb: http://git.kernel.org/tip/2987e32f75dcb40bce0f3ab1d5d48cc1c580fd8b
Author: Adrian Hunter <adrian.hunter@xxxxxxxxx>
AuthorDate: Thu, 23 Oct 2014 13:45:15 +0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 29 Oct 2014 10:32:49 -0200
perf script: Add Python script to export to postgresql
Add a Python script to export to a postgresql database.
The script requires the Python pyside module and the Qt PostgreSQL
driver. The packages needed are probably named "python-pyside" and
"libqt4-sql-psql"
The caller of the script must be able to create postgresql databases.
The script takes the database name as a parameter. The database and
database tables are created. Data is written to flat files which are
then imported using SQL COPY FROM.
Example:
$ perf record ls
...
$ perf script report export-to-postgresql lsdb
2014-02-14 10:55:38.631431 Creating database...
2014-02-14 10:55:39.291958 Writing to intermediate files...
2014-02-14 10:55:39.350280 Copying to database...
2014-02-14 10:55:39.358536 Removing intermediate files...
2014-02-14 10:55:39.358665 Adding primary keys
2014-02-14 10:55:39.658697 Adding foreign keys
2014-02-14 10:55:39.667412 Done
$ psql lsdb
lsdb-# \d
List of relations
Schema | Name | Type | Owner
--------+-----------------+-------+-------
public | comm_threads | table | acme
public | comms | table | acme
public | dsos | table | acme
public | machines | table | acme
public | samples | table | acme
public | samples_view | view | acme
public | selected_events | table | acme
public | symbols | table | acme
public | threads | table | acme
(9 rows)
lsdb-# \d samples
Table "public.samples"
Column | Type | Modifiers
---------------+---------+-----------
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 |
Indexes:
"samples_pkey" PRIMARY KEY, btree (id)
Foreign-key constraints:
"commfk" FOREIGN KEY (comm_id) REFERENCES comms(id)
"dsofk" FOREIGN KEY (dso_id) REFERENCES dsos(id)
"evselfk" FOREIGN KEY (evsel_id) REFERENCES selected_events(id)
"machinefk" FOREIGN KEY (machine_id) REFERENCES machines(id)
"symbolfk" FOREIGN KEY (symbol_id) REFERENCES symbols(id)
"threadfk" FOREIGN KEY (thread_id) REFERENCES threads(id)
"todsofk" FOREIGN KEY (to_dso_id) REFERENCES dsos(id)
"tosymbolfk" FOREIGN KEY (to_symbol_id) REFERENCES symbols(id)
lsdb-# \d samples_view
View "public.samples_view"
Column | Type | Modifiers
-------------------+-------------------------+-----------
id | bigint |
time | bigint |
cpu | integer |
pid | integer |
tid | integer |
command | character varying(16) |
event | character varying(80) |
ip_hex | text |
symbol | character varying(2048) |
sym_offset | bigint |
dso_short_name | character varying(256) |
to_ip_hex | text |
to_symbol | character varying(2048) |
to_sym_offset | bigint |
to_dso_short_name | character varying(256) |
lsdb=# select * from samples_view;
id| time |cpu | pid | tid |command| event | ip_hex | symbol |sym_off| dso_name|to_ip_hex|to_symbol|to_sym_off|to_dso_name
--+------------+----+------+------+-------+--------+---------------+---------------------+-------+---------+---------+---------+----------+----------
1 |12202825015 | -1 | 7339 | 7339 |:17339 | cycles | fffff8104d24a |native_write_msr_safe| 10 | [kernel]| 0 | unknown | 0| unknown
2 |12203258804 | -1 | 7339 | 7339 |:17339 | cycles | fffff8104d24a |native_write_msr_safe| 10 | [kernel]| 0 | unknown | 0| unknown
3 |12203988119 | -1 | 7339 | 7339 |:17339 | cycles | fffff8104d24a |native_write_msr_safe| 10 | [kernel]| 0 | unknown | 0| unknown
My notes (which may be out-of-date) on setting up postgresql so you can
create databases:
fedora:
$ sudo yum install postgresql postgresql-server python-pyside qt-postgresql
$ sudo su - postgres -c initdb
$ sudo service postgresql start
$ sudo su - postgres
$ createuser -s <your username>
I used the the unix user name in createuser.
If it fails, try createuser without -s and answer the following question
to allow your user to create tables:
Shall the new role be a superuser? (y/n) y
ubuntu:
$ sudo apt-get install postgresql
$ sudo su - postgres
$ createuser <your username>
Shall the new role be a superuser? (y/n) y
You may want to disable automatic startup. One way is to edit
/etc/postgresql/9.3/main/start.conf. Another is to disable the init
script e.g. sudo update-rc.d postgresql disable
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1414061124-26830-8-git-send-email-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
.../scripts/python/bin/export-to-postgresql-record | 8 +
.../scripts/python/bin/export-to-postgresql-report | 24 ++
tools/perf/scripts/python/export-to-postgresql.py | 360 +++++++++++++++++++++
3 files changed, 392 insertions(+)
diff --git a/tools/perf/scripts/python/bin/export-to-postgresql-record b/tools/perf/scripts/python/bin/export-to-postgresql-record
new file mode 100644
index 0000000..221d66e
--- /dev/null
+++ b/tools/perf/scripts/python/bin/export-to-postgresql-record
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+#
+# export perf data to a postgresql database. Can cover
+# perf ip samples (excluding the tracepoints). No special
+# record requirements, just record what you want to export.
+#
+perf record $@
diff --git a/tools/perf/scripts/python/bin/export-to-postgresql-report b/tools/perf/scripts/python/bin/export-to-postgresql-report
new file mode 100644
index 0000000..a8fdd15
--- /dev/null
+++ b/tools/perf/scripts/python/bin/export-to-postgresql-report
@@ -0,0 +1,24 @@
+#!/bin/bash
+# description: export perf data to a postgresql database
+# args: [database name] [columns]
+n_args=0
+for i in "$@"
+do
+ if expr match "$i" "-" > /dev/null ; then
+ break
+ fi
+ n_args=$(( $n_args + 1 ))
+done
+if [ "$n_args" -gt 2 ] ; then
+ echo "usage: export-to-postgresql-report [database name] [columns]"
+ exit
+fi
+if [ "$n_args" -gt 1 ] ; then
+ dbname=$1
+ columns=$2
+ shift 2
+elif [ "$n_args" -gt 0 ] ; then
+ dbname=$1
+ shift
+fi
+perf script $@ -s "$PERF_EXEC_PATH"/scripts/python/export-to-postgresql.py $dbname $columns
diff --git a/tools/perf/scripts/python/export-to-postgresql.py b/tools/perf/scripts/python/export-to-postgresql.py
new file mode 100644
index 0000000..d8f6df0
--- /dev/null
+++ b/tools/perf/scripts/python/export-to-postgresql.py
@@ -0,0 +1,360 @@
+# 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
+
+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
+
+def usage():
+ print >> sys.stderr, "Usage is: export-to-postgresql.py <database name> [<columns>]"
+ print >> sys.stderr, "where: columns 'all' or 'branches'"
+ 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")
+
+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))')
+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)')
+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)')
+
+do_query(query, 'CREATE VIEW samples_view AS '
+ 'SELECT '
+ 'id,'
+ 'time,'
+ 'cpu,'
+ '(SELECT pid FROM threads WHERE id = thread_id) AS pid,'
+ '(SELECT tid FROM threads WHERE id = thread_id) AS tid,'
+ '(SELECT comm FROM comms WHERE id = comm_id) AS command,'
+ '(SELECT name FROM selected_events WHERE id = evsel_id) AS event,'
+ 'to_hex(ip) AS ip_hex,'
+ '(SELECT name FROM symbols WHERE id = symbol_id) AS symbol,'
+ 'sym_offset,'
+ '(SELECT short_name FROM dsos WHERE id = dso_id) AS dso_short_name,'
+ 'to_hex(to_ip) AS to_ip_hex,'
+ '(SELECT name FROM symbols WHERE id = to_symbol_id) AS to_symbol,'
+ 'to_sym_offset,'
+ '(SELECT short_name FROM dsos WHERE id = to_dso_id) AS to_dso_short_name'
+ ' FROM samples')
+
+
+file_header = struct.pack("!11sii", "PGCOPY\n\377\r\n\0", 0, 0)
+file_trailer = "\377\377"
+
+def open_output_file(file_name):
+ path_name = output_dir_name + "/" + file_name
+ file = open(path_name, "w+")
+ file.write(file_header)
+ return file
+
+def close_output_file(file):
+ file.write(file_trailer)
+ file.close()
+
+def copy_output_file_direct(file, table_name):
+ close_output_file(file)
+ sql = "COPY " + table_name + " FROM '" + file.name + "' (FORMAT 'binary')"
+ do_query(query, sql)
+
+# Use COPY FROM STDIN because security may prevent postgres from accessing the files directly
+def copy_output_file(file, table_name):
+ conn = PQconnectdb("dbname = " + dbname)
+ if (PQstatus(conn)):
+ raise Exception("COPY FROM STDIN PQconnectdb failed")
+ file.write(file_trailer)
+ file.seek(0)
+ sql = "COPY " + table_name + " FROM STDIN (FORMAT 'binary')"
+ res = PQexec(conn, sql)
+ if (PQresultStatus(res) != 4):
+ raise Exception("COPY FROM STDIN PQexec failed")
+ data = file.read(65536)
+ while (len(data)):
+ ret = PQputCopyData(conn, data, len(data))
+ if (ret != 1):
+ raise Exception("COPY FROM STDIN PQputCopyData failed, error " + str(ret))
+ data = file.read(65536)
+ ret = PQputCopyEnd(conn, None)
+ if (ret != 1):
+ raise Exception("COPY FROM STDIN PQputCopyEnd failed, error " + str(ret))
+ PQfinish(conn)
+
+def remove_output_file(file):
+ name = file.name
+ file.close()
+ os.unlink(name)
+
+evsel_file = open_output_file("evsel_table.bin")
+machine_file = open_output_file("machine_table.bin")
+thread_file = open_output_file("thread_table.bin")
+comm_file = open_output_file("comm_table.bin")
+comm_thread_file = open_output_file("comm_thread_table.bin")
+dso_file = open_output_file("dso_table.bin")
+symbol_file = open_output_file("symbol_table.bin")
+sample_file = open_output_file("sample_table.bin")
+
+def trace_begin():
+ print datetime.datetime.today(), "Writing to intermediate files..."
+ # id == 0 means unknown. It is easier to create records for them than replace the zeroes with NULLs
+ evsel_table(0, "unknown")
+ machine_table(0, 0, "unknown")
+ thread_table(0, 0, 0, -1, -1)
+ comm_table(0, "unknown")
+ dso_table(0, 0, "unknown", "unknown", "")
+ symbol_table(0, 0, 0, 0, 0, "unknown")
+
+unhandled_count = 0
+
+def trace_end():
+ print datetime.datetime.today(), "Copying to database..."
+ copy_output_file(evsel_file, "selected_events")
+ copy_output_file(machine_file, "machines")
+ copy_output_file(thread_file, "threads")
+ copy_output_file(comm_file, "comms")
+ copy_output_file(comm_thread_file, "comm_threads")
+ copy_output_file(dso_file, "dsos")
+ copy_output_file(symbol_file, "symbols")
+ copy_output_file(sample_file, "samples")
+
+ print datetime.datetime.today(), "Removing intermediate files..."
+ remove_output_file(evsel_file)
+ remove_output_file(machine_file)
+ remove_output_file(thread_file)
+ remove_output_file(comm_file)
+ remove_output_file(comm_thread_file)
+ remove_output_file(dso_file)
+ remove_output_file(symbol_file)
+ remove_output_file(sample_file)
+ os.rmdir(output_dir_name)
+ print datetime.datetime.today(), "Adding primary keys"
+ do_query(query, 'ALTER TABLE selected_events ADD PRIMARY KEY (id)')
+ do_query(query, 'ALTER TABLE machines ADD PRIMARY KEY (id)')
+ do_query(query, 'ALTER TABLE threads ADD PRIMARY KEY (id)')
+ do_query(query, 'ALTER TABLE comms ADD PRIMARY KEY (id)')
+ do_query(query, 'ALTER TABLE comm_threads ADD PRIMARY KEY (id)')
+ do_query(query, 'ALTER TABLE dsos ADD PRIMARY KEY (id)')
+ do_query(query, 'ALTER TABLE symbols ADD PRIMARY KEY (id)')
+ do_query(query, 'ALTER TABLE samples ADD PRIMARY KEY (id)')
+
+ print datetime.datetime.today(), "Adding foreign keys"
+ do_query(query, 'ALTER TABLE threads '
+ 'ADD CONSTRAINT machinefk FOREIGN KEY (machine_id) REFERENCES machines (id),'
+ 'ADD CONSTRAINT processfk FOREIGN KEY (process_id) REFERENCES threads (id)')
+ do_query(query, 'ALTER TABLE comm_threads '
+ 'ADD CONSTRAINT commfk FOREIGN KEY (comm_id) REFERENCES comms (id),'
+ 'ADD CONSTRAINT threadfk FOREIGN KEY (thread_id) REFERENCES threads (id)')
+ do_query(query, 'ALTER TABLE dsos '
+ 'ADD CONSTRAINT machinefk FOREIGN KEY (machine_id) REFERENCES machines (id)')
+ do_query(query, 'ALTER TABLE symbols '
+ 'ADD CONSTRAINT dsofk FOREIGN KEY (dso_id) REFERENCES dsos (id)')
+ do_query(query, 'ALTER TABLE samples '
+ 'ADD CONSTRAINT evselfk FOREIGN KEY (evsel_id) REFERENCES selected_events (id),'
+ 'ADD CONSTRAINT machinefk FOREIGN KEY (machine_id) REFERENCES machines (id),'
+ 'ADD CONSTRAINT threadfk FOREIGN KEY (thread_id) REFERENCES threads (id),'
+ 'ADD CONSTRAINT commfk FOREIGN KEY (comm_id) REFERENCES comms (id),'
+ 'ADD CONSTRAINT dsofk FOREIGN KEY (dso_id) REFERENCES dsos (id),'
+ 'ADD CONSTRAINT symbolfk FOREIGN KEY (symbol_id) REFERENCES symbols (id),'
+ 'ADD CONSTRAINT todsofk FOREIGN KEY (to_dso_id) REFERENCES dsos (id),'
+ 'ADD CONSTRAINT tosymbolfk FOREIGN KEY (to_symbol_id) REFERENCES symbols (id)')
+
+ if (unhandled_count):
+ print datetime.datetime.today(), "Warning: ", unhandled_count, " unhandled events"
+ print datetime.datetime.today(), "Done"
+
+def trace_unhandled(event_name, context, event_fields_dict):
+ global unhandled_count
+ unhandled_count += 1
+
+def sched__sched_switch(*x):
+ pass
+
+def evsel_table(evsel_id, evsel_name, *x):
+ n = len(evsel_name)
+ fmt = "!hiqi" + str(n) + "s"
+ value = struct.pack(fmt, 2, 8, evsel_id, n, evsel_name)
+ evsel_file.write(value)
+
+def machine_table(machine_id, pid, root_dir, *x):
+ n = len(root_dir)
+ fmt = "!hiqiii" + str(n) + "s"
+ value = struct.pack(fmt, 3, 8, machine_id, 4, pid, n, root_dir)
+ machine_file.write(value)
+
+def thread_table(thread_id, machine_id, process_id, pid, tid, *x):
+ value = struct.pack("!hiqiqiqiiii", 5, 8, thread_id, 8, machine_id, 8, process_id, 4, pid, 4, tid)
+ thread_file.write(value)
+
+def comm_table(comm_id, comm_str, *x):
+ n = len(comm_str)
+ fmt = "!hiqi" + str(n) + "s"
+ value = struct.pack(fmt, 2, 8, comm_id, n, comm_str)
+ comm_file.write(value)
+
+def comm_thread_table(comm_thread_id, comm_id, thread_id, *x):
+ fmt = "!hiqiqiq"
+ value = struct.pack(fmt, 3, 8, comm_thread_id, 8, comm_id, 8, thread_id)
+ comm_thread_file.write(value)
+
+def dso_table(dso_id, machine_id, short_name, long_name, build_id, *x):
+ n1 = len(short_name)
+ n2 = len(long_name)
+ n3 = len(build_id)
+ fmt = "!hiqiqi" + str(n1) + "si" + str(n2) + "si" + str(n3) + "s"
+ value = struct.pack(fmt, 5, 8, dso_id, 8, machine_id, n1, short_name, n2, long_name, n3, build_id)
+ dso_file.write(value)
+
+def symbol_table(symbol_id, dso_id, sym_start, sym_end, binding, symbol_name, *x):
+ n = len(symbol_name)
+ fmt = "!hiqiqiqiqiii" + str(n) + "s"
+ value = struct.pack(fmt, 6, 8, symbol_id, 8, dso_id, 8, sym_start, 8, sym_end, 4, binding, n, symbol_name)
+ symbol_file.write(value)
+
+def sample_table(sample_id, evsel_id, machine_id, thread_id, comm_id, dso_id, symbol_id, sym_offset, ip, time, cpu, to_dso_id, to_symbol_id, to_sym_offset, to_ip, period, weight, transaction, data_src, *x):
+ if branches:
+ value = struct.pack("!hiqiqiqiqiqiqiqiqiqiqiiiqiqiqiq", 15, 8, sample_id, 8, evsel_id, 8, machine_id, 8, thread_id, 8, comm_id, 8, dso_id, 8, symbol_id, 8, sym_offset, 8, ip, 8, time, 4, cpu, 8, to_dso_id, 8, to_symbol_id, 8, to_sym_offset, 8, to_ip)
+ else:
+ value = struct.pack("!hiqiqiqiqiqiqiqiqiqiqiiiqiqiqiqiqiqiqiq", 19, 8, sample_id, 8, evsel_id, 8, machine_id, 8, thread_id, 8, comm_id, 8, dso_id, 8, symbol_id, 8, sym_offset, 8, ip, 8, time, 4, cpu, 8, to_dso_id, 8, to_symbol_id, 8, to_sym_offset, 8, to_ip, 8, period, 8, weight, 8, transaction, 8, data_src)
+ sample_file.write(value)
--
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