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Aug 14, 2025
) Since we (Linaro) moved out bots to a new machine, this test has been failing: https://lab.llvm.org/buildbot/#/builders/121/builds/1566 Most of the time, the rss difference is greater than 512 on the first iteration then settles down to 512 for all the rest. ``` starting rss 512 shadow pages: 1024 p = 0xe083e0800000 1536 -> 740 diff 796 1252 -> 740 diff 512 1252 -> 740 diff 512 1252 -> 740 diff 512 1252 -> 740 diff 512 1252 -> 740 diff 512 1252 -> 740 diff 512 1252 -> 740 diff 512 1252 -> 740 diff 512 1252 -> 740 diff 512 p = 0xe083e0800000 passed 1 out of 10 release-shadow.c.tmp: /home/tcwg-buildbot/worker/clang-aarch64-lld-2stage/llvm/compiler-rt/test/hwasan/TestCases/Linux/release-shadow.c:81: int main(): Assertion `success_count > total_count * 0.8' failed. ``` Given that the test was looking for a diff of at least 513, I guess that 512 is ok too. For future reference, the original bot host was running this kernel: Linux 5.15.0-136-generic #147-Ubuntu SMP Sat Mar 15 15:51:36 UTC 2025 aarch64 aarch64 aarch64 GNU/Linux And the new host: Linux 6.8.0-64-generic #67-Ubuntu SMP PREEMPT_DYNAMIC Sun Jun 15 20:23:40 UTC 2025 aarch64 aarch64 aarch64 GNU/Linux Though the new host also has more RAM, so the kernel may be less aggresive with memory management.
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