Add numa_faults.stp example.

diff --git a/testsuite/systemtap.examples/index.html b/testsuite/systemtap.examples/index.html
index 5435829f6f33dee4023f102bb7c847a7bc99d14d..e186b615d4a6a1774e45f7636398f638a452ccea 100644 (file)
--- a/testsuite/systemtap.examples/index.html
+++ b/testsuite/systemtap.examples/index.html
@@ -94,6 +94,9 @@ keywords: <a href="keyword-index.html#LOCKING">LOCKING</a> <br>
 <li><a href="memory/kmalloc-top">memory/kmalloc-top</a> - Show Paths to Kernel Malloc (kmalloc) Invocations<br>
 keywords: <a href="keyword-index.html#MEMORY">MEMORY</a> <br>
 <p>The kmalloc-top perl program runs a small systemtap script to collect stack traces for each call to the kmalloc function and counts the time that each stack trace is observed. When kmalloc-top exits it prints out sorted list. The output can be be filtered to print only only the first stack traces (-t) stack traces with more a minimum counts (-m), or exclude certain stack traces (-e).</p></li>
+<li><a href="memory/numa_faults.stp">memory/numa_faults.stp</a> - Summarize Process Misses across NUMA Nodes<br>
+keywords: <a href="keyword-index.html#MEMORY">MEMORY</a> <a href="keyword-index.html#NUMA">NUMA</a> <br>
+<p>The numa_faults.stp script tracks the read and write pages faults for each process. When the script exits it prints out the total read and write pages faults for each process. The script also providea a break down of page faults per node for each process. This script is useful for determining whether the program has good locality (page faults limited to a single node) on a NUMA computer.</p></li>
 <li><a href="memory/pfaults.stp">memory/pfaults.stp</a> - Generate Log of Major and Minor Page Faults<br>
 keywords: <a href="keyword-index.html#MEMORY">MEMORY</a> <br>
 <p>The pfaults.stp script generates a simple log for each major and minor page fault that occurs on the system. Each line contains a timestamp (in microseconds) when the page fault servicing was completed, the pid of the process, the address of the page fault, the type of access (read or write), the type of fault (major or minor), and the elapsed time for page fault. This log can be examined to determine where the page faults are occuring.</p></li>

diff --git a/testsuite/systemtap.examples/index.txt b/testsuite/systemtap.examples/index.txt
index 53270b01b76f068bba8fec1b7890c6fccb150978..35decb82b55055348c954a29b8bac32985259fc0 100644 (file)
--- a/testsuite/systemtap.examples/index.txt
+++ b/testsuite/systemtap.examples/index.txt
@@ -175,6 +175,17 @@ keywords: memory
   counts (-m), or exclude certain stack traces (-e).
 
 
+memory/numa_faults.stp - Summarize Process Misses across NUMA Nodes
+keywords: memory numa
+
+  The numa_faults.stp script tracks the read and write pages faults for
+  each process. When the script exits it prints out the total read and
+  write pages faults for each process. The script also providea a break
+  down of page faults per node for each process. This script is useful
+  for determining whether the program has good locality (page faults
+  limited to a single node) on a NUMA computer.
+
+
 memory/pfaults.stp - Generate Log of Major and Minor Page Faults
 keywords: memory
 

diff --git a/testsuite/systemtap.examples/keyword-index.html b/testsuite/systemtap.examples/keyword-index.html
index f3db142949a145baf49f4668309335e9404beb4a..4de28426597c842236f2b4bd77588a47f44daa62 100644 (file)
--- a/testsuite/systemtap.examples/keyword-index.html
+++ b/testsuite/systemtap.examples/keyword-index.html
@@ -39,7 +39,7 @@
                </ul>
 
 <h2>Examples by Keyword</h2>
-<p><tt><a href="#BACKTRACE">BACKTRACE</a> <a href="#BUFFER">BUFFER</a> <a href="#CALLGRAPH">CALLGRAPH</a> <a href="#CPU">CPU</a> <a href="#DISK">DISK</a> <a href="#FORMAT">FORMAT</a> <a href="#FREE">FREE</a> <a href="#FUNCTIONS">FUNCTIONS</a> <a href="#FUTEX">FUTEX</a> <a href="#GRAPH">GRAPH</a> <a href="#INTERRUPT">INTERRUPT</a> <a href="#IO">IO</a> <a href="#LOCKING">LOCKING</a> <a href="#MEMORY">MEMORY</a> <a href="#MONITOR">MONITOR</a> <a href="#NETWORK">NETWORK</a> <a href="#PER-PROCESS">PER-PROCESS</a> <a href="#PROCESS">PROCESS</a> <a href="#PROFILING">PROFILING</a> <a href="#READ">READ</a> <a href="#SCHEDULER">SCHEDULER</a> <a href="#SIGNALS">SIGNALS</a> <a href="#SIMPLE">SIMPLE</a> <a href="#SLEEP">SLEEP</a> <a href="#SOCKET">SOCKET</a> <a href="#SYSCALL">SYSCALL</a> <a href="#TCP">TCP</a> <a href="#TIME">TIME</a> <a href="#TRACE">TRACE</a> <a href="#TRACEPOINT">TRACEPOINT</a> <a href="#TRAFFIC">TRAFFIC</a> <a href="#TTY">TTY</a> <a href="#USE">USE</a> <a href="#WAIT4">WAIT4</a> <a href="#WRITE">WRITE</a> </tt></p>
+<p><tt><a href="#BACKTRACE">BACKTRACE</a> <a href="#BUFFER">BUFFER</a> <a href="#CALLGRAPH">CALLGRAPH</a> <a href="#CPU">CPU</a> <a href="#DISK">DISK</a> <a href="#FORMAT">FORMAT</a> <a href="#FREE">FREE</a> <a href="#FUNCTIONS">FUNCTIONS</a> <a href="#FUTEX">FUTEX</a> <a href="#GRAPH">GRAPH</a> <a href="#INTERRUPT">INTERRUPT</a> <a href="#IO">IO</a> <a href="#LOCKING">LOCKING</a> <a href="#MEMORY">MEMORY</a> <a href="#MONITOR">MONITOR</a> <a href="#NETWORK">NETWORK</a> <a href="#NUMA">NUMA</a> <a href="#PER-PROCESS">PER-PROCESS</a> <a href="#PROCESS">PROCESS</a> <a href="#PROFILING">PROFILING</a> <a href="#READ">READ</a> <a href="#SCHEDULER">SCHEDULER</a> <a href="#SIGNALS">SIGNALS</a> <a href="#SIMPLE">SIMPLE</a> <a href="#SLEEP">SLEEP</a> <a href="#SOCKET">SOCKET</a> <a href="#SYSCALL">SYSCALL</a> <a href="#TCP">TCP</a> <a href="#TIME">TIME</a> <a href="#TRACE">TRACE</a> <a href="#TRACEPOINT">TRACEPOINT</a> <a href="#TRAFFIC">TRAFFIC</a> <a href="#TTY">TTY</a> <a href="#USE">USE</a> <a href="#WAIT4">WAIT4</a> <a href="#WRITE">WRITE</a> </tt></p>
 <h3><a name="BACKTRACE">BACKTRACE</a></h3>
 <ul>
 <li><a href="interrupt/scf.stp">interrupt/scf.stp</a> - Tally Backtraces for Inter-Processor Interrupt (IPI)<br>
@@ -168,6 +168,9 @@ keywords: <a href="keyword-index.html#SYSCALL">SYSCALL</a> <a href="keyword-inde
 <li><a href="memory/kmalloc-top">memory/kmalloc-top</a> - Show Paths to Kernel Malloc (kmalloc) Invocations<br>
 keywords: <a href="keyword-index.html#MEMORY">MEMORY</a> <br>
 <p>The kmalloc-top perl program runs a small systemtap script to collect stack traces for each call to the kmalloc function and counts the time that each stack trace is observed. When kmalloc-top exits it prints out sorted list. The output can be be filtered to print only only the first stack traces (-t) stack traces with more a minimum counts (-m), or exclude certain stack traces (-e).</p></li>
+<li><a href="memory/numa_faults.stp">memory/numa_faults.stp</a> - Summarize Process Misses across NUMA Nodes<br>
+keywords: <a href="keyword-index.html#MEMORY">MEMORY</a> <a href="keyword-index.html#NUMA">NUMA</a> <br>
+<p>The numa_faults.stp script tracks the read and write pages faults for each process. When the script exits it prints out the total read and write pages faults for each process. The script also providea a break down of page faults per node for each process. This script is useful for determining whether the program has good locality (page faults limited to a single node) on a NUMA computer.</p></li>
 <li><a href="memory/pfaults.stp">memory/pfaults.stp</a> - Generate Log of Major and Minor Page Faults<br>
 keywords: <a href="keyword-index.html#MEMORY">MEMORY</a> <br>
 <p>The pfaults.stp script generates a simple log for each major and minor page fault that occurs on the system. Each line contains a timestamp (in microseconds) when the page fault servicing was completed, the pid of the process, the address of the page fault, the type of access (read or write), the type of fault (major or minor), and the elapsed time for page fault. This log can be examined to determine where the page faults are occuring.</p></li>
@@ -202,6 +205,12 @@ keywords: <a href="keyword-index.html#NETWORK">NETWORK</a> <a href="keyword-inde
 keywords: <a href="keyword-index.html#NETWORK">NETWORK</a> <a href="keyword-index.html#TRAFFIC">TRAFFIC</a> <br>
 <p>The tcpdumplike.stp prints out a line for each TCP packet received. Each line includes the source and destination IP addresses, the source and destination ports, and flags.</p></li>
 </ul>
+<h3><a name="NUMA">NUMA</a></h3>
+<ul>
+<li><a href="memory/numa_faults.stp">memory/numa_faults.stp</a> - Summarize Process Misses across NUMA Nodes<br>
+keywords: <a href="keyword-index.html#MEMORY">MEMORY</a> <a href="keyword-index.html#NUMA">NUMA</a> <br>
+<p>The numa_faults.stp script tracks the read and write pages faults for each process. When the script exits it prints out the total read and write pages faults for each process. The script also providea a break down of page faults per node for each process. This script is useful for determining whether the program has good locality (page faults limited to a single node) on a NUMA computer.</p></li>
+</ul>
 <h3><a name="PER-PROCESS">PER-PROCESS</a></h3>
 <ul>
 <li><a href="io/ttyspy.stp">io/ttyspy.stp</a> - Monitor tty typing.<br>

diff --git a/testsuite/systemtap.examples/keyword-index.txt b/testsuite/systemtap.examples/keyword-index.txt
index d3d66fe23f208fcba384c110dfac9b7c51386fb9..bbee341f2b4a1ed9ade1f0e7023aa03db7d9c5a0 100644 (file)
--- a/testsuite/systemtap.examples/keyword-index.txt
+++ b/testsuite/systemtap.examples/keyword-index.txt
@@ -299,6 +299,17 @@ keywords: memory
   counts (-m), or exclude certain stack traces (-e).
 
 
+memory/numa_faults.stp - Summarize Process Misses across NUMA Nodes
+keywords: memory numa
+
+  The numa_faults.stp script tracks the read and write pages faults for
+  each process. When the script exits it prints out the total read and
+  write pages faults for each process. The script also providea a break
+  down of page faults per node for each process. This script is useful
+  for determining whether the program has good locality (page faults
+  limited to a single node) on a NUMA computer.
+
+
 memory/pfaults.stp - Generate Log of Major and Minor Page Faults
 keywords: memory
 
@@ -386,6 +397,19 @@ keywords: network traffic
   source and destination ports, and flags.
 
 
+= NUMA =
+
+memory/numa_faults.stp - Summarize Process Misses across NUMA Nodes
+keywords: memory numa
+
+  The numa_faults.stp script tracks the read and write pages faults for
+  each process. When the script exits it prints out the total read and
+  write pages faults for each process. The script also providea a break
+  down of page faults per node for each process. This script is useful
+  for determining whether the program has good locality (page faults
+  limited to a single node) on a NUMA computer.
+
+
 = PER-PROCESS =
 
 io/ttyspy.stp - Monitor tty typing.

diff --git a/testsuite/systemtap.examples/memory/numa_faults.meta b/testsuite/systemtap.examples/memory/numa_faults.meta
new file mode 100644 (file)
index 0000000..34034be
--- /dev/null
+++ b/testsuite/systemtap.examples/memory/numa_faults.meta
@@ -0,0 +1,13 @@
+title: Summarize Process Misses across NUMA Nodes
+name: numa_faults.stp
+version: 1.0
+author: IBM
+keywords: memory numa
+subsystem: memory
+status: production
+exit: user-controlled
+output: list
+scope: system-wide
+description: The numa_faults.stp script tracks the read and write pages faults for each process. When the script exits it prints out the total read and write pages faults for each process. The script also providea a break down of page faults per node for each process. This script is useful for determining whether the program has good locality (page faults limited to a single node) on a NUMA computer.
+test_check: stap -p4 numa_faults.stp
+test_installcheck: stap numa_faults.stp -c "sleep 1"

diff --git a/testsuite/systemtap.examples/memory/numa_faults.stp b/testsuite/systemtap.examples/memory/numa_faults.stp
new file mode 100755 (executable)
index 0000000..34a0ace
--- /dev/null
+++ b/testsuite/systemtap.examples/memory/numa_faults.stp
@@ -0,0 +1,38 @@
+#! /usr/bin/env stap
+
+global execnames, page_faults, node_faults, nodes
+
+probe vm.pagefault {
+  p = pid(); n=addr_to_node(address)
+  execnames[p] = execname()
+  page_faults[p, write_access ? 1 : 0] <<< 1
+  node_faults[p, n] <<< 1
+  nodes[n] <<< 1
+}
+
+function print_pf () {
+  printf ("\n")
+  printf ("%-16s %-6s %10s %10s %-20s\n",
+          "Execname", "PID", "RD Faults", "WR Faults", "Node:Faults")
+  print ("======================= ========== ========== =============\n")
+  foreach (pid in execnames) {
+    printf ("%-16s %6d %10d %10d ", execnames[pid], pid,
+            @count(page_faults[pid,0]), @count(page_faults[pid,1]))
+    foreach ([node+] in nodes) {
+      if ([pid, node] in node_faults)
+        printf ("%d:%d ", node, @count(node_faults[pid, node]))
+    }
+    printf ("\n")
+  }
+  printf("\n")
+}
+
+probe begin {
+ printf("Starting pagefault counters \n")
+}
+
+probe end {
+ printf("Printing counters: \n")
+ print_pf ()
+ printf("Done\n")
+}