westonpace commented on a change in pull request #10186:
URL: https://github.com/apache/arrow/pull/10186#discussion_r624106186
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File path: cpp/src/arrow/memory_pool.cc
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@@ -253,6 +253,8 @@ class SystemAllocator {
#endif
}
}
+
+ static void ReleaseUnused() {}
Review comment:
I added a `malloc_trim` call. My manual exploration confirmed this
triggers a number of `madvise(...MADV_DONTNEED)` calls.
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