On 20.06.24 11:04, Ryan Roberts wrote:
On 20/06/2024 01:26, Barry Song wrote:
From: Barry Song <v-songbaohua@xxxxxxxx>
Both Ryan and Chris have been utilizing the small test program to aid
in debugging and identifying issues with swap entry allocation. While
a real or intricate workload might be more suitable for assessing the
correctness and effectiveness of the swap allocation policy, a small
test program presents a simpler means of understanding the problem and
initially verifying the improvements being made.
Let's endeavor to integrate it into the self-test suite. Although it
presently only accommodates 64KB and 4KB, I'm optimistic that we can
expand its capabilities to support multiple sizes and simulate more
complex systems in the future as required.
I'll try to summarize the thread with Huang Ying by suggesting this test program
is "neccessary but not sufficient" to exhaustively test the mTHP swap-out path.
I've certainly found it useful and think it would be a valuable addition to the
tree.
That said, I'm not convinced it is a selftest; IMO a selftest should provide a
clear pass/fail result against some criteria and must be able to be run
automatically by (e.g.) a CI system.
Likely we should then consider moving other such performance-related
thingies out of the selftests?
--
Cheers,
David / dhildenb
