Add monotonic increasing point writes workload

Bench.cpp

@@ -789,10 +789,8 @@ template <class ConflictSet_> void benchConflictSet(const std::string &name) {
 
     while (version < kMvccWindow) {
       auto v = ++version;
-      for (auto &w : writes) {
-        w.writeVersion = v;
-      }
-      cs.addWrites(writes.data(), writes.size());
+      writes[0].writeVersion = v;
+      cs.addWrites(writes.data(), 1);
     }
 
     bench.run(name + " (point writes)", [&]() {
@@ -852,6 +850,28 @@ template <class ConflictSet_> void benchConflictSet(const std::string &name) {
       cs.setOldestVersion(version - kMvccWindow);
     });
   }
+
+  bench.batch(1);
+
+  {
+    bench.run(name + " (monotonic increasing point writes)", [&]() {
+      auto v = ++version;
+      ConflictSet::WriteRange w;
+
+      uint8_t b[9];
+      b[8] = 0;
+      auto x = __builtin_bswap64(version);
+      memcpy(b, &x, 8);
+
+      w.writeVersion = v;
+      w.begin.p = b;
+      w.begin.len = 8;
+      w.end.len = 0;
+      w.end.p = b;
+      cs.addWrites(&w, 1);
+      cs.setOldestVersion(version - kMvccWindow);
+    });
+  }
 }
 
 int main(void) {