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perf scripts python: exported-sql-viewer.py: Add help window

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Add a window to display help. It is also possible to display the help
only, by using the option "--help-only" instead of a database name.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20181104151238.15947-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2018-11-04 17:12:37 +02:00 committed by Arnaldo Carvalho de Melo
parent 210cf1f961
commit 65b24292e8
1 changed files with 154 additions and 1 deletions
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155
tools/perf/scripts/python/exported-sql-viewer.py
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@ -2084,6 +2084,147 @@ class WindowMenu():
def setActiveSubWindow(self, nr):
self.mdi_area.setActiveSubWindow(self.mdi_area.subWindowList()[nr - 1])
# Help text
glb_help_text = """
<h1>Contents</h1>
<style>
p.c1 {
text-indent: 40px;
}
p.c2 {
text-indent: 80px;
}
}
</style>
<p class=c1><a href=#reports>1. Reports</a></p>
<p class=c2><a href=#callgraph>1.1 Context-Sensitive Call Graph</a></p>
<p class=c2><a href=#allbranches>1.2 All branches</a></p>
<p class=c2><a href=#selectedbranches>1.3 Selected branches</a></p>
<p class=c1><a href=#tables>2. Tables</a></p>
<h1 id=reports>1. Reports</h1>
<h2 id=callgraph>1.1 Context-Sensitive Call Graph</h2>
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:
<pre>
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
</pre>
<h3>Points to note:</h3>
<ul>
<li>The top level is a command name (comm)</li>
<li>The next level is a thread (pid:tid)</li>
<li>Subsequent levels are functions</li>
<li>'Count' is the number of calls</li>
<li>'Time' is the elapsed time until the function returns</li>
<li>Percentages are relative to the level above</li>
<li>'Branch Count' is the total number of branches for that function and all functions that it calls
</ul>
<h3>Find</h3>
Ctrl-F displays a Find bar which finds function names by either an exact match or a pattern match.
The pattern matching symbols are ? for any character and * for zero or more characters.
<h2 id=allbranches>1.2 All branches</h2>
The All branches report displays all branches in chronological order.
Not all data is fetched immediately. More records can be fetched using the Fetch bar provided.
<h3>Disassembly</h3>
Open a branch to display disassembly. This only works if:
<ol>
<li>The disassembler is available. Currently, only Intel XED is supported - see <a href=#xed>Intel XED Setup</a></li>
<li>The object code is available. Currently, only the perf build ID cache is searched for object code.
The default directory ~/.debug can be overridden by setting environment variable PERF_BUILDID_DIR.
One exception is kcore where the DSO long name is used (refer dsos_view on the Tables menu),
or alternatively, set environment variable PERF_KCORE to the kcore file name.</li>
</ol>
<h4 id=xed>Intel XED Setup</h4>
To use Intel XED, libxed.so must be present. To build and install libxed.so:
<pre>
git clone https://github.com/intelxed/mbuild.git mbuild
git clone https://github.com/intelxed/xed
cd xed
./mfile.py --share
sudo ./mfile.py --prefix=/usr/local install
sudo ldconfig
</pre>
<h3>Find</h3>
Ctrl-F displays a Find bar which finds substrings by either an exact match or a regular expression match.
Refer to Python documentation for the regular expression syntax.
All columns are searched, but only currently fetched rows are searched.
<h2 id=selectedbranches>1.3 Selected branches</h2>
This is the same as the <a href=#allbranches>All branches</a> report but with the data reduced
by various selection criteria. A dialog box displays available criteria which are AND'ed together.
<h3>1.3.1 Time ranges</h3>
The time ranges hint text shows the total time range. Relative time ranges can also be entered in
ms, us or ns. Also, negative values are relative to the end of trace. Examples:
<pre>
81073085947329-81073085958238 From 81073085947329 to 81073085958238
100us-200us From 100us to 200us
10ms- From 10ms to the end
-100ns The first 100ns
-10ms- The last 10ms
</pre>
N.B. Due to the granularity of timestamps, there could be no branches in any given time range.
<h1 id=tables>2. Tables</h1>
The Tables menu shows all tables and views in the database. Most tables have an associated view
which displays the information in a more friendly way. Not all data for large tables is fetched
immediately. More records can be fetched using the Fetch bar provided. Columns can be sorted,
but that can be slow for large tables.
<p>There are also tables of database meta-information.
For SQLite3 databases, the sqlite_master table is included.
For PostgreSQL databases, information_schema.tables/views/columns are included.
<h3>Find</h3>
Ctrl-F displays a Find bar which finds substrings by either an exact match or a regular expression match.
Refer to Python documentation for the regular expression syntax.
All columns are searched, but only currently fetched rows are searched.
"""
# Help window
class HelpWindow(QMdiSubWindow):
def __init__(self, glb, parent=None):
super(HelpWindow, self).__init__(parent)
self.text = QTextBrowser()
self.text.setHtml(glb_help_text)
self.text.setReadOnly(True)
self.text.setOpenExternalLinks(True)
self.setWidget(self.text)
AddSubWindow(glb.mainwindow.mdi_area, self, "Exported SQL Viewer Help")
# Main window that only displays the help text
class HelpOnlyWindow(QMainWindow):
def __init__(self, parent=None):
super(HelpOnlyWindow, self).__init__(parent)
self.setMinimumSize(200, 100)
self.resize(800, 600)
self.setWindowTitle("Exported SQL Viewer Help")
self.setWindowIcon(self.style().standardIcon(QStyle.SP_MessageBoxInformation))
self.text = QTextBrowser()
self.text.setHtml(glb_help_text)
self.text.setReadOnly(True)
self.text.setOpenExternalLinks(True)
self.setCentralWidget(self.text)
# Font resize
def ResizeFont(widget, diff):
@ -2170,6 +2311,9 @@ class MainWindow(QMainWindow):
self.window_menu = WindowMenu(self.mdi_area, menu)
help_menu = menu.addMenu("&Help")
help_menu.addAction(CreateAction("&Exported SQL Viewer Help", "Helpful information", self.Help, self, QKeySequence.HelpContents))
def Find(self):
win = self.mdi_area.activeSubWindow()
if win:
@ -2230,6 +2374,9 @@ class MainWindow(QMainWindow):
def NewTableView(self, table_name):
TableWindow(self.glb, table_name, self)
def Help(self):
HelpWindow(self.glb, self)
# XED Disassembler
class xed_state_t(Structure):
@ -2429,10 +2576,16 @@ class DBRef():
def Main():
if (len(sys.argv) < 2):
print >> sys.stderr, "Usage is: exported-sql-viewer.py <database name>"
print >> sys.stderr, "Usage is: exported-sql-viewer.py {<database name> | --help-only}"
raise Exception("Too few arguments")
dbname = sys.argv[1]
if dbname == "--help-only":
app = QApplication(sys.argv)
mainwindow = HelpOnlyWindow()
mainwindow.show()
err = app.exec_()
sys.exit(err)
is_sqlite3 = False
try: