Output includes percentages

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 45 insertions, 1 deletions

diff --git a/src/main.rs b/src/main.rs
index 3347aef..9354c88 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -14,6 +14,11 @@ use toml;
 const RESULTS:  &str = "perf-results.toml";
 
 type DataPoints = HashMap<String, f32>;
+type DataPointsDeltas = HashMap<String, (f32, f32)>;
+
+fn dps_to_dpdeltas(d: &DataPoints) -> DataPointsDeltas {
+    d.iter().map(|x| (x.0.clone(), (*x.1, 0.0)) ).collect()
+}
 
 struct TestResult {
     commit:             String,
@@ -23,6 +28,14 @@ struct TestResult {
 
 type TestResultsVec = Vec<TestResult>;
 
+struct TestResultDeltas {
+    commit:             String,
+    commitmsg:          String,
+    data_points:        DataPointsDeltas,
+}
+
+type TestResultsDeltasVec = Vec<TestResultDeltas>;
+
 #[derive(Serialize, Deserialize)]
 struct TestResultsMap {
     d: HashMap<String, DataPoints>,
@@ -231,6 +244,28 @@ fn log_with_results(repo: &git2::Repository,
     Ok(v)
 }
 
+fn results_to_results_with_deltas(results: TestResultsVec) -> TestResultsDeltasVec {
+    let mut results: TestResultsDeltasVec = results.iter().map(|i| TestResultDeltas {
+        commit:         i.commit.clone(),
+        commitmsg:      i.commitmsg.clone(),
+        data_points:    dps_to_dpdeltas(&i.data_points)
+    }).collect();
+
+    let mut last: DataPoints = HashMap::new();
+
+    for i in results.iter_mut().rev() {
+        for c in i.data_points.iter_mut() {
+            if let Some(l) = last.get(c.0) {
+                c.1.1 = (c.1.0 - l) / l;
+            }
+
+            last.insert(c.0.clone(), c.1.0);
+        }
+    };
+
+    results
+}
+
 fn list_tests(repo: &git2::Repository, head: &Option<String>) {
     colored::control::set_override(true);
     Pager::with_pager("less -FRX").setup();
@@ -238,6 +273,8 @@ fn list_tests(repo: &git2::Repository, head: &Option<String>) {
     let results = results_read(RESULTS).unwrap();
     let log = log_with_results(repo, head, &results).unwrap();
 
+    let log = results_to_results_with_deltas(log);
+
     let mut columns = HashSet::new();
     for r in log.iter() {
         for e in r.data_points.iter() {
@@ -256,7 +293,14 @@ fn list_tests(repo: &git2::Repository, head: &Option<String>) {
 
         for e in columns.iter() {
             if let Some(v) = i.data_points.get(e.clone()) {
-                print!("{:20}", v);
+                let f = format!("{:12} {:+6.1}%", v.0, v.1 * 100.0);
+                let f = if v.1 < 0.0 {
+                    f.red()
+                } else {
+                    f.normal()
+                };
+
+                print!("{}", f);
             } else {
                 print!("{:20}", "");
             }