On Mon, Jul 29, 2024 at 7:29 PM Uladzislau Rezki <urezki@xxxxxxxxx> wrote:
> It would be really good if Adrian could run the "compiling workload" on
> his big system and post the statistics here.
>
> For example:
> a) v6.11-rc1 + KASAN.
> b) v6.11-rc1 + KASAN + patch.
Sure, please see the statistics below.
Test Result (based on 6.11-rc1)
===============================
1. Profile purge_vmap_node()
A. Command: trace-cmd record -p function_graph -l purge_vmap_node make -j $(nproc)
B. Average execution time of purge_vmap_node():
no patch (us) patched (us) saved
------------- ------------ -----
147885.02 3692.51 97%
C. Total execution time of purge_vmap_node():
no patch (us) patched (us) saved
------------- ------------ -----
194173036 5114138 97%
[ftrace log] Without patch: https://gist.github.com/AdrianHuang/a5bec861f67434e1024bbf43cea85959
[ftrace log] With patch: https://gist.github.com/AdrianHuang/a200215955ee377288377425dbaa04e3
2. Use `time` utility to measure execution time
A. Command: make clean && time make -j $(nproc)
B. The following result is the average kernel execution time of five-time
measurements. ('sys' field of `time` output):
no patch (seconds) patched (seconds) saved
------------------ ---------------- -----
36932.904 31403.478 15%
[`time` log] Without patch: https://gist.github.com/AdrianHuang/987b20fd0bd2bb616b3524aa6ee43112
[`time` log] With patch: https://gist.github.com/AdrianHuang/da2ea4e6aa0b4dcc207b4e40b202f694
