Turbostat: Add (back) sanity check

This new gauge contains TSC / interval_float.
If TSC and interval_float are behaving correctly, this is supposed to be
constant. Otherwise, other measurements can be wrong

diff --git a/src/turbostat.c b/src/turbostat.c
index fef1b1e..6cd39a1 100644 (file)
--- a/src/turbostat.c
+++ b/src/turbostat.c
@@ -585,6 +585,9 @@ submit_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
        if ((!aperf_mperf_unstable) || (!(t->aperf > t->tsc || t->mperf > t->tsc)))
                turbostat_submit("Buzy", "frequency", name, 1.0 * t->tsc / 1000000 * t->aperf / t->mperf / interval_float);
 
+       /* Sanity check (should stay stable) */
+       turbostat_submit("TSC", "gauge", name, 1.0 * t->tsc / 1000000 / interval_float);
+
        /* SMI */
        turbostat_submit(NULL, "current", name, t->smi_count);