message: Tweak test to allow a bit of extra buffer usage (16M -> 18M)
diff: @@ -231,7 +231,8 @@ TEST_F(BPBufferSizeTest, SyncDeferredIdenticalUsage)
  * size
  * */
  const size_t TotalDataSize = Nx * sizeof(double) * 3;
  - const size_t MaxExtra = 16777216; /* 16MB extra allowed in buffer */
  + const size_t MaxExtra =
  + 18 * 1024 * 1024; /* 18MB extra allowed in buffer */
  for (size_t step = 0; step < NSteps; ++step)
  {
  EXPECT_LT(bufsize_sync_beginstep[step], TotalDataSize + MaxExtra);
  