From 9b32450c877cb0b75fabeb47753d2e131044f1d4 Mon Sep 17 00:00:00 2001
From: Ed Hennis <ed@ripple.com>
Date: Mon, 12 Aug 2024 11:26:46 -0400
Subject: [PATCH] Log timing of the FindOversizeCross test

* Allows some analysis of offer operations
---
 include/xrpl/protocol/Protocol.h   |  2 +-
 src/test/app/OversizeMeta_test.cpp | 39 ++++++++++++++++++++++++++++--
 2 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/include/xrpl/protocol/Protocol.h b/include/xrpl/protocol/Protocol.h
index 8d8a71dfef8..d5dff4b733e 100644
--- a/include/xrpl/protocol/Protocol.h
+++ b/include/xrpl/protocol/Protocol.h
@@ -49,7 +49,7 @@ std::size_t constexpr unfundedOfferRemoveLimit = 1000;
 std::size_t constexpr expiredOfferRemoveLimit = 256;
 
 /** The maximum number of metadata entries allowed in one transaction */
-std::size_t constexpr oversizeMetaDataCap = 5200;
+std::size_t constexpr oversizeMetaDataCap = 1000; // 5200;
 
 /** The maximum number of entries per directory page */
 std::size_t constexpr dirNodeMaxEntries = 32;
diff --git a/src/test/app/OversizeMeta_test.cpp b/src/test/app/OversizeMeta_test.cpp
index 0a7f42e1801..c368172373f 100644
--- a/src/test/app/OversizeMeta_test.cpp
+++ b/src/test/app/OversizeMeta_test.cpp
@@ -20,6 +20,7 @@
 #include <test/jtx.h>
 #include <xrpl/beast/unit_test.h>
 #include <algorithm>
+#include <chrono>
 
 namespace ripple {
 namespace test {
@@ -162,6 +163,7 @@ class FindOversizeCross_test : public beast::unit_test::suite
     oversize(std::size_t n)
     {
         using namespace jtx;
+        using clock = std::chrono::high_resolution_clock;
         auto const billion = 1000000000ul;
         Env env(*this);
         env.disable_sigs();
@@ -170,9 +172,42 @@ class FindOversizeCross_test : public beast::unit_test::suite
         env.fund(XRP(billion), gw, "alice");
         env.trust(USD(billion), "alice");
         env(pay(gw, "alice", USD(billion)));
-        createOffers(env, USD, n);
+        {
+            auto const start = clock::now();
+            createOffers(env, USD, n);
+            std::chrono::nanoseconds duration = clock::now() - start;
+            auto const count = duration.count();
+
+            std::cout << "Created " << n
+                      << " offers (including ledger close) in " << count
+                      << "ns. Average time per offer: " << (count / n)
+                      << "ns\n";
+        }
         env(pay("alice", gw, USD(billion)));
-        env(offer("alice", USD(1), XRP(1)), ter(std::ignore));
+        {
+            auto const start = clock::now();
+            env(offer("alice", USD(1), XRP(1)), ter(std::ignore));
+            std::chrono::nanoseconds duration = clock::now() - start;
+            auto const count = duration.count();
+
+            auto const meta = env.meta();
+            auto const affected =
+                meta->getJson(JsonOptions::none)[sfAffectedNodes.fieldName];
+            std::size_t numDeleted = 0;
+            for (auto const& obj : affected)
+            {
+                if (obj.isMember(sfDeletedNode.fieldName))
+                    ++numDeleted;
+            }
+
+            std::cout << "Offer crossing result: " << transToken(env.ter())
+                      << ". Touched " << affected.size()
+                      << " ledger objects, and deleted " << numDeleted << " in "
+                      << count << "ns. Average time per deleted offer: "
+                      << (numDeleted > 0 ? to_string(count / numDeleted) : "-")
+                      << "ns\n";
+            std::cout << "\n";
+        }
         return env.ter() == tecOVERSIZE;
     }