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By knoxa
via dev.nuodb.com
Submitted: May 19 2014 / 14:27

Important news for NuoDB users running on linux. JEMalloc uses madvise(...,..., MADV_DONTNEED), to discard pages it doesn't need anymore. Since that doesn't work with THPs, our engineering team (thanks Tommy) patched JEMalloc to turn off huge page allocations using madvise(...,..., MADV_NOHUGEPAGE). Doing that fixed the memory consumption issues we were seeing without any noticeable impact on our performance.
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