third_party_mimalloc/test/perfomance/README.md

Mimalloc perfomance tests

xmalloc-test - multi-threads benchmark with 100 purely allocating threads, and 100 purely deallocating threads with objects of various sizes migrating between them. This asymmetric producer/consumer pattern is usually difficult to handle by allocators with thread-local caches.

bench-malloc-thread - multi-threads benchmark originally prepared for the glibc memory allocator

How to prepare:

1. Build tests:

$ ./build.sh --product-name rk3568 --build-target third_party/mimalloc:mimalloc_test

2. Copy tests to device:

$ ./hdc_std file send ~/workspace/ohos/out/rk3568/tests/unittest/mimalloc_test/ /data

3. Make tests executable on the device:

# chmod -R a+x /data/mimalloc_test/

Versions of tests:

• xmalloc-test - test binary that use mimalloc memory allocator
• xmalloc-test-default - test binary that use default musl allocator
• bench-malloc-thread - test binary that use mimalloc memory allocator
• bench-malloc-thread-default - test binary that use default musl allocator

Run xmalloc-tests:

# ./xmalloc-test -w 4 -t 5 -s 64
# ./xmalloc-test-default -w 4 -t 5 -s 64

Output is relative time (rtime smaller is better):

# ./xmalloc-test -w 4 -t 5 -s 64                                               
rtime: 15.258, free/sec: 6.554 M
# ./xmalloc-test-default -w 4 -t 5 -s 64                                       
rtime: 125.008, free/sec: 0.800 M

Run bench-malloc-thread:

# ./bench-malloc-thread 4
# ./bench-malloc-thread-default 4

Output is number of iterations that tests can execute in constant time (iterations bigger is better):

# ./bench-malloc-thread 4                                                      
18120892 iterations
# ./bench-malloc-thread-default 4                                              
3996257 iterations