Added a stress test which measures the cost of translation.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5341 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/perf/README b/perf/README
index f0754e9..9519279 100644
--- a/perf/README
+++ b/perf/README
@@ -1,9 +1,27 @@
------------------------------------------------------------------------------
+=============================================================================
Notes about performance benchmarks
------------------------------------------------------------------------------
-For each benchmark, here is a brief description and notes about strengths
-and weaknesses of the benchmark.
+=============================================================================
+For each benchmark, here is a brief description and notes about its
+strengths and weaknesses.
+-----------------------------------------------------------------------------
+Artificial stress tests
+-----------------------------------------------------------------------------
+bigcode1, bigcode2:
+- Description: Executes a lot of (nonsensical) code.
+- Strengths: Demonstrates the cost of translation which is a large part
+ of runtime, particularly on larger programs.
+- Weaknesses: Highly artificial.
+
+sarp:
+- Description: Does a lot of stack allocation and deallocation.
+- Strengths: Tests for a specific performance bug that existed in 3.1.0 and
+ all earlier versions.
+- Weaknesses: Highly artificial.
+
+-----------------------------------------------------------------------------
+Real programs
+-----------------------------------------------------------------------------
bz2:
- Description: Burrows-Wheeler compression and decompression.
- Strengths: A real, widely used program, very similar to the 256.bzip2
@@ -26,9 +44,4 @@
- Weaknesses: Dominated by the inner loop, which is quite long and flatters
Valgrind due to the small dispatcher overhead.
-sarp:
-- Description: Does a lot of stack allocation and deallocation.
-- Strengths: Tests for a specific performance bug that existed in 3.1.0 and
- all earlier versions.
-- Weaknesses: Highly artificial.