Excessive memory usage? #237
Description
When building wangle version 2024.03.11.00 on a RPi4 running NixOS, I ran into the following test failure:
14/14 Test #12: SSLContextManagerTest ................Subprocess killed***Exception: 71.72 sec
Note: Google Test filter = -SSLContextManagerTest.TestSingleClientCAFileSet:SSLContextManagerTest.TestMultipleClientCAsSet:SSLContextManagerTest.TestSessionContextCertRemoval
[==========] Running 8 tests from 1 test suite.
[----------] Global test environment set-up.
[----------] 8 tests from SSLContextManagerTest
[ RUN ] SSLContextManagerTest.Test1
[ OK ] SSLContextManagerTest.Test1 (23 ms)
[ RUN ] SSLContextManagerTest.TestResetSSLContextConfigs
[ OK ] SSLContextManagerTest.TestResetSSLContextConfigs (127 ms)
[ RUN ] SSLContextManagerTest.TestCertificateWithNoCN
93% tests passed, 1 tests failed out of 14
Total Test time (real) = 72.82 sec
The following tests FAILED:
12 - SSLContextManagerTest (Subprocess killed)
Errors while running CTest
make: *** [Makefile:91: test] Error 8
The problem seems to be because the machine ran out of memory and the OOM killer was invoked because the test process was using more than 6 GB of RAM, as you can see in this kernel log excerpt:
[213737.065545] [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name
(...)
[213738.304241] [1301889] 30001 1301889 5645152 1552672 26828800 1774976 0 SSLContextManag 13:18:51 [120/20620]
(...)
[213738.414744] Out of memory: Killed process 1301889 (SSLContextManag) total-vm:22580608kB, anon-rss:6210560kB, file-rss:128kB, shmem-rss:0kB, UID:30001 pgtables:26200kB oom_score_adj:0
I skimmed the test's source code (wangle/ssl/test/SSLContextManagerTest.cpp) and since I didn't see anything that would warrant such excessive memory usage, I decided to file this issue just in case.
Thanks.