From e109ffa76ecbb3140fc8fc6ecb32b010a2eab43c Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@math.tamu.edu>
Date: Sat, 23 Nov 2013 17:05:53 +0000
Subject: [PATCH] Increase queue size for WorkStream::run operation as a result
 of some timing efforts.

git-svn-id: https://svn.dealii.org/trunk@31773 0785d39b-7218-0410-832d-ea1e28bc413d
---
 deal.II/source/numerics/data_out.cc | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/deal.II/source/numerics/data_out.cc b/deal.II/source/numerics/data_out.cc
index 29a5a97bc1..8ac46cd8e5 100644
--- a/deal.II/source/numerics/data_out.cc
+++ b/deal.II/source/numerics/data_out.cc
@@ -454,7 +454,13 @@ void DataOut<dim,DH>::build_patches (const Mapping<DH::dimension,DH::space_dimen
 		     // no copy-local-to-global function needed here
 		     std_cxx1x::function<void (const ::dealii::DataOutBase::Patch<DH::dimension, DH::space_dimension> &)>(),
                      thread_data,
-                     sample_patch);
+                     sample_patch,
+		     2*multithread_info.n_threads(),
+		     // experimenting shows that we can make things run a bit
+		     // faster if we increase the number of items in flight at
+		     // any given time (about 10% on the testcase discussed in
+		     // @ref workstream_paper, on 32 cores)
+		     64);
 }
 
 
-- 
2.39.5