commit 444342772b087d201fbf2e4bcaaedb454a94c5f6
author Dave Borowitz <dborowitz@google.com> Tue May 06 11:21:08 2014 -0700
committer Dave Borowitz <dborowitz@google.com> Tue May 06 11:22:11 2014 -0700
tree c585590dc910d01f896d73d7848c6f221f42ead2
parent a85f256e09477a7c55dc8aa0c712b9467e96fd61

Don't rewrite parents in log output

This causes JGit to buffer the entire repo's commit graph in memory,
which severely hurts performance. With this change, log of a file in
Chromium's history can take ~1s instead of ~10s.

Change-Id: Ia0ce56e2999042578817cbb20208e2f8f69f6743

gitiles-servlet/src/main/java/com/google/gitiles/LogServlet.java

diff --git a/gitiles-servlet/src/main/java/com/google/gitiles/LogServlet.java b/gitiles-servlet/src/main/java/com/google/gitiles/LogServlet.java
index d904d39..4d1da1c 100644
--- a/gitiles-servlet/src/main/java/com/google/gitiles/LogServlet.java
+++ b/gitiles-servlet/src/main/java/com/google/gitiles/LogServlet.java
@@ -196,6 +196,7 @@
       walk.markUninteresting(walk.parseCommit(view.getOldRevision().getId()));
     }
     if (!Strings.isNullOrEmpty(view.getPathPart())) {
+      walk.setRewriteParents(false);
       walk.setTreeFilter(AndTreeFilter.create(
           PathFilterGroup.createFromStrings(view.getPathPart()),
           TreeFilter.ANY_DIFF));