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benchtests: Update README to include instructions for bench-build target

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Siddhesh Poyarekar 2016-04-20 10:58:20 +05:30
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ChangeLog
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@ -1,5 +1,8 @@
2016-04-20 Siddhesh Poyarekar <sid@reserved-bit.com>
benchtests/README: Update README to include instructions on
using bench-build.
Makefile.in (bench-build): New target.
Rules (PHONY): Add bench-build target.
benchtests/Makefile (bench): Depend on bench-build.

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benchtests/README
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@ -34,6 +34,23 @@ the benchmark to use clock_gettime by invoking make as follows:
Again, one must run `make bench-clean' before changing the measurement method.
Running benchmarks on another target:
====================================
If the target where you want to run benchmarks is not capable of building the
code or you're cross-building, you could build and execute the benchmark in
separate steps. On the build system run:
$ make bench-build
and then copy the source and build directories to the target and run the
benchmarks from the build directory as usual:
$ make bench
make sure the copy preserves timestamps by using either rsync or scp -p
otherwise the above command may try to build the benchmark again.
Adding a function to benchtests:
===============================