AddressSanitizerPerformanceNumbers
These numbers are measured on SPEC 2006 (C/C++ only) using Clang3.3 (trunk) r179094 (on Google Code) (April 09 2013) on Intel Xeon W3690 @3.47GHz.
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2-nd column: clang -O2
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3-rd column: clang -O2 -fsanitize=address -fno-omit-frame-pointer
| BENCHMARK | O2 | O2+asan | slowdown |
|---|---|---|---|
| 400.perlbench | 344.00 | 1304.00 | 3.79 |
| 401.bzip2 | 490.00 | 844.00 | 1.72 |
| 403.gcc | 322.00 | 608.00 | 1.89 |
| 429.mcf | 316.00 | 583.00 | 1.84 |
| 445.gobmk | 409.00 | 833.00 | 2.04 |
| 456.hmmer | 605.00 | 1226.00 | 2.03 |
| 458.sjeng | 456.00 | 982.00 | 2.15 |
| 462.libquantum | 480.00 | 539.00 | 1.12 |
| 464.h264ref | 547.00 | 1311.00 | 2.40 |
| 471.omnetpp | 314.00 | 587.00 | 1.87 |
| 473.astar | 403.00 | 655.00 | 1.63 |
| 483.xalancbmk | 227.00 | 493.00 | 2.17 |
| 433.milc | 408.00 | 666.00 | 1.63 |
| 444.namd | 369.00 | 593.00 | 1.61 |
| 447.dealII | 321.00 | 597.00 | 1.86 |
| 450.soplex | 233.00 | 367.00 | 1.58 |
| 453.povray | 189.00 | 425.00 | 2.25 |
| 470.lbm | 318.00 | 393.00 | 1.24 |
| 482.sphinx3 | 519.00 | 911.00 | 1.76 |
The average slowdown is 1.93, the median slowdown is 1.86.
Older measurements: asan r496 (on Google Code) (clang -O2 -fsanitize=address) with malloc_context_size=1 (i.e. no unwinding).
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The baseline is clang -O2.
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The average slowdown introduced by full instrumentation (red) is 1.73.
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When only writes are instrumented (blue), the average slowdown is 1.26.
