fix: Nightly SVG Footer Shows Variables Not Values (#395)

Author: stanbrub

src/main/java/io/deephaven/benchmark/run/SvgSummary.java

@@ -64,7 +64,7 @@ void summarize() {
             var platformProp = platformProps.get(lookupName);
             var benchmark = benchmarks.get(lookupName);
             if (platformProp != null)
-                return platformProp.getValue(columnName);
+                return formatPlatformValue(lookupName, platformProp.getValue(columnName));
             if (benchmark != null)
                 return Numbers.formatNumber(benchmark.getValue(columnName));
             return "$0";
@@ -103,10 +103,16 @@ private Map<String, Row> readSummaryCsv(URL csv, String sortColumn, boolean isNu
     private String replacePlatformVars(String str) {
         DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy-MM-dd");
         str = str.replace("${run_date}", dtf.format(LocalDateTime.now()));
-        str = str.replace("${os_name}", "Ubuntu 22.04.1 LTS".toLowerCase().replace(" ", "-"));
+        str = str.replace("${os_name}", "Ubuntu 22.04.5 LTS".toLowerCase().replace(" ", "-"));
         return str.replace("${benchmark_count}", "" + benchmarks.size());
     }
 
+    private String formatPlatformValue(String name, String value) {
+        if (name.contains(".heap"))
+            return Numbers.formatBytesToGigs(value);
+        return value;
+    }
+
     class RowComparator implements Comparator<Row> {
         final String sortKey;
         final boolean isNumber;

src/main/resources/io/deephaven/benchmark/run/profile/compare-benchmark-summary.template.svg

@@ -39,7 +39,7 @@ public void summarize() throws Exception {
                     <tr><td>Avg By Row1</td><td>14,915,478</td><td>9,609,994</td></tr>
                     <tr><td>Median By Row2</td><td>2,309,348</td><td>2,226,799</td></tr>
                   </tbody>
-                  <tfoot><tr><td colspan="3">* threads=16 heap=24g os=ubuntu-22.04.1-lts benchmark-count=5</td></tr></tfoot>
+                  <tfoot><tr><td colspan="3">* threads=16 heap=24g os=ubuntu-22.04.5-lts benchmark-count=5</td></tr></tfoot>
                 </table>
               </div>
             </foreignObject>