Added output from make perf_report.
diff --git a/README.md b/README.md
index 9be0212..ba29b9b 100644
--- a/README.md
+++ b/README.md
@@ -83,8 +83,9 @@
Effort has been spent on implementing different backends in the
pursuit of finding the right performance trade-off. The estimate will
always be the same, regardless of backend. A simple performance
-comparison can be seen by running `make perf_report`. Fill rate refers
-to how many registers has a value other than 0.
+comparison can be seen by running `make perf_report`, see below for
+the results from an i7-3770 at 3.4 GHz. Fill rate refers to how many
+registers has a value other than 0.
* `hyper_binary`: Fixed memory usage (6 bits * 2^P), fastest on insert,
union, cardinality and serialization. Best default choice.
@@ -111,4 +112,59 @@
+```
+$ make perf_report
+...
+
+module P card fill bytes insert us union ms card ms json ms
+hyper_gb 15 1 0.00 64 301.90 0.00 0.10 2.69
+hyper_gb 15 100 0.00 3984 1.34 0.05 0.05 6.13
+hyper_gb 15 500 0.02 19784 1.53 0.27 0.12 8.67
+hyper_gb 15 1000 0.03 39384 1.72 0.53 0.19 8.67
+hyper_gb 15 2500 0.07 96384 1.84 1.49 0.40 10.67
+hyper_gb 15 5000 0.14 185224 1.99 3.24 0.71 12.22
+hyper_gb 15 10000 0.26 344464 2.10 6.80 1.31 15.09
+hyper_gb 15 15000 0.37 481664 2.02 10.07 1.91 17.99
+hyper_gb 15 25000 0.53 698344 2.08 16.42 2.67 18.71
+hyper_gb 15 50000 0.78 1027504 1.96 31.49 4.29 18.87
+hyper_gb 15 100000 0.95 1248144 1.78 49.90 5.20 17.92
+hyper_gb 15 1000000 1.00 1310744 1.10 108.38 5.72 18.96
+hyper_array 15 1 0.00 520 4.10 0.00 4.74 3.83
+hyper_array 15 100 0.00 19536 1.56 0.10 4.71 3.99
+hyper_array 15 500 0.02 69328 1.44 0.43 4.63 4.46
+hyper_array 15 1000 0.03 107760 1.51 0.79 4.68 4.29
+hyper_array 15 2500 0.07 188384 1.35 1.79 4.70 5.16
+hyper_array 15 5000 0.14 261520 1.31 3.27 4.72 5.33
+hyper_array 15 10000 0.26 308072 1.21 5.45 4.99 6.90
+hyper_array 15 15000 0.37 320128 1.22 7.34 4.96 7.72
+hyper_array 15 25000 0.53 323384 1.21 11.07 5.18 8.42
+hyper_array 15 50000 0.78 323560 1.04 17.90 5.51 8.08
+hyper_array 15 100000 0.95 323560 1.00 26.93 5.60 7.70
+hyper_array 15 1000000 1.00 323560 0.72 51.65 5.77 7.77
+hyper_bisect 15 1 0.00 3 6.10 0.00 0.05 7.26
+hyper_bisect 15 100 0.00 297 1.62 0.08 0.12 17.42
+hyper_bisect 15 500 0.02 1482 1.72 0.42 0.59 21.30
+hyper_bisect 15 1000 0.03 2952 1.83 0.95 1.10 23.21
+hyper_bisect 15 2500 0.07 7227 1.97 2.63 2.53 25.91
+hyper_bisect 15 5000 0.14 13890 2.23 6.50 5.06 28.80
+hyper_bisect 15 10000 0.26 25833 2.74 18.21 9.18 31.61
+hyper_bisect 15 15000 0.37 32768 3.67 33.29 4.40 4.46
+hyper_bisect 15 25000 0.53 32768 3.11 78.77 4.60 5.17
+hyper_bisect 15 50000 0.78 32768 2.53 190.66 4.90 4.89
+hyper_bisect 15 100000 0.95 32768 2.05 381.11 5.07 4.43
+hyper_bisect 15 1000000 1.00 32768 0.85 27.17 5.65 4.59
+hyper_binary 15 1 0.00 88 3.40 0.00 6.06 2.23
+hyper_binary 15 100 0.00 4048 0.63 0.01 5.91 2.38
+hyper_binary 15 500 0.02 20048 0.50 0.01 5.67 2.58
+hyper_binary 15 1000 0.02 24576 2.13 0.00 2.72 1.33
+hyper_binary 15 2500 0.07 24576 1.54 1.97 2.72 1.95
+hyper_binary 15 5000 0.12 24576 1.23 2.40 2.71 2.77
+hyper_binary 15 10000 0.26 24576 1.10 11.16 2.95 4.46
+hyper_binary 15 15000 0.34 24576 1.11 12.30 2.75 5.48
+hyper_binary 15 25000 0.50 24576 0.95 11.97 2.79 5.83
+hyper_binary 15 50000 0.76 24576 0.92 13.55 2.81 5.65
+hyper_binary 15 100000 0.95 24576 0.79 11.74 2.59 5.16
+hyper_binary 15 1000000 1.00 24576 0.55 13.88 2.64 5.11
+```
+
[paper by Google]: http://static.googleusercontent.com/external_content/untrusted_dlcp/research.google.com/en//pubs/archive/40671.pdf
