Add support for recording named runtime with rr

The traces of the named process are stored in the directory
$system_test/nsX/named-Y/.

(cherry picked from commit e088e8a992008ba5e0dc1c540f808a03e69cd619)

diff --git a/bin/tests/system/README b/bin/tests/system/README
index 58e6048ae02a9de033378df3e7dde8b862f27841..cb9f71b237d8e6bcf2594e86f30f57c8ca8b5e77 100644 (file)
--- a/bin/tests/system/README
+++ b/bin/tests/system/README
@@ -710,6 +710,14 @@ or SEQUENTIAL variables.
 need to edit multiple files to add a test.)
 
 
+rr
+---
+
+When running system tests, named can be run under the rr tool. rr records a
+trace to the $system_test/nsX/named-Y/ directory, which can be later used to
+replay named. To enable this, execute start.pl with the USE_RR environment
+variable set.
+
 Developer Notes for pytest runner
 ===
 

diff --git a/bin/tests/system/start.pl b/bin/tests/system/start.pl
index c0163a2a2300b053b68ab1187031351d0a20c6d3..904aa9b1e038f097ffb87ea6613b4a0ea25f7b7d 100755 (executable)
--- a/bin/tests/system/start.pl
+++ b/bin/tests/system/start.pl
@@ -232,6 +232,9 @@ sub construct_ns_command {
 
        if ($taskset) {
                $command = "taskset $taskset $NAMED ";
+       } elsif ($ENV{'USE_RR'}) {
+               $ENV{'_RR_TRACE_DIR'} = ".";
+               $command = "rr record --chaos $NAMED ";
        } else {
                $command = "$NAMED ";
        }