From: Key Meyer <kai@fiber.net>
Date: Mon, 27 Apr 2009 22:36:32 +0000 (-0400)
Subject: traceio sample: tolerate more than a few hundred processes
X-Git-Tag: release-0.9.8~135
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=3b735623b8c878f52e0945074b4be4cdcd0bc257;p=systemtap.git

traceio sample: tolerate more than a few hundred processes

... rather than exiting with MAXACTIONS exceeded
---

diff --git a/testsuite/systemtap.examples/io/traceio.stp b/testsuite/systemtap.examples/io/traceio.stp
index 9e2deec61..a5d79fde3 100755
--- a/testsuite/systemtap.examples/io/traceio.stp
+++ b/testsuite/systemtap.examples/io/traceio.stp
@@ -10,22 +10,20 @@
 global reads, writes, total_io
 
 probe vfs.read.return {
-  reads[execname()] += $return
+  reads[pid(),execname()] += $return
+  total_io[pid(),execname()] += $return
 }
 
 probe vfs.write.return {
-  writes[execname()] += $return
+  writes[pid(),execname()] += $return
+  total_io[pid(),execname()] += $return
 }
 
 probe timer.s(1) {
-  foreach (p in reads)
-    total_io[p] += reads[p]
-  foreach (p in writes)
-    total_io[p] += writes[p]
-  foreach(p in total_io- limit 10)
-    printf("%15s r: %8d KiB w: %8d KiB\n",
-           p, reads[p]/1024,
-           writes[p]/1024)
+  foreach([p,e] in total_io- limit 10)
+    printf("%8d %15s r: %8d MiB w: %8d MiB\n",
+           p, e, reads[p,e]/1024/1024,
+           writes[p,e]/1024/1024)
   printf("\n")
   # Note we don't zero out reads, writes and total_io,
   # so the values are cumulative since the script started.