check memory usage and basket size

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No description provided.

[arizzi]

this should fix

+++ b/PhysicsTools/NanoAOD/plugins/NanoAODOutputModule.cc
@@ -258,6 +258,8 @@ NanoAODOutputModule::openFile(edm::FileBlock const&) {
   // create the trees
   m_tree.reset(new TTree("Events","Events"));
   m_tree->SetAutoSave(std::numeric_limits::max());
+  m_tree->SetAutoFlush(-10000000);
   m_commonBranches.branch(*m_tree);

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[6] run: 1 lumi: 1447 event: 1093182  vsize = 1401.12 deltaVsize = 0.75 rss = 845.723 delta = 1.11328
[344] run: 1 lumi: 1447 event: 1093521  vsize = 1463.12 deltaVsize = 61.5 rss = 930.508 delta = 84.7852
[6365] run: 1 lumi: 3191 event: 2412714  vsize = 1565.38 deltaVsize = 98 rss = 1028.16 delta = 97.6562
[12730] run: 1 lumi: 11759 event: 8889682  vsize = 1586.62 deltaVsize = 15.25 rss = 1137.15 delta = 108.984
[8465] run: 1 lumi: 28103 event: 21246016  vsize = 1569.38 deltaVsize = 1.5 rss = 1042.84 delta = 14.6719
[54027] run: 1 lumi: 21366 event: 16152567  vsize = 1589.38 deltaVsize = 0 rss = 1147.75 delta = 0.0117188
[54026] run: 1 lumi: 21366 event: 16152560  vsize = 1589.38 deltaVsize = 0 rss = 1147.75 delta = 0.0117188
[54025] run: 1 lumi: 21366 event: 16152536  vsize = 1589.38 deltaVsize = 0.75 rss = 1147.74 delta = 6.125

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#30