From 3504143b6c065a392dd1e98e22e06c53e0fc4e4e Mon Sep 17 00:00:00 2001
From: mig <mig>
Date: Fri, 18 Mar 2011 13:10:03 +0000
Subject: README addition

---
 README.mig-alloc-reform | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.mig-alloc-reform b/README.mig-alloc-reform
index 139af2e..92debc3 100644
--- a/README.mig-alloc-reform
+++ b/README.mig-alloc-reform
@@ -38,6 +38,10 @@ What is mig-alloc-reform?
 
 
 ** PERFORMANCE NOTES **
+   * do enable HAVE_FAST_TSD on threaded build where available! Without
+     that it is probably slower than before. Note that __thread is not
+     available on macosx, but the "slow" version should be quite fast there
+     (or so they say)
    * not measured, but: purify, native and zippy builds should be just as
      fast as before. The obj-alloc macros have been removed while
      developing. It is not certain that they provide a speedup, this will
-- 
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