1 files changed, 2 insertions, 0 deletions
diff --git a/capture.sh b/capture.sh
index 1ef90ba9b..bdc9e7d65 100755
--- a/capture.sh
+++ b/capture.sh
@@ -1,6 +1,8 @@
 #!/bin/sh
 set -eu
 
+grep -q constant_tsc /proc/cpuinfo || (echo "need constant_tsc" ; exit 100 )
+
 machine=$(etc/machine.sh)
 cpufreq=$(etc/cpufreq)
 tscfreq=$(etc/tscfreq)