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-rw-r--r--src/util.cpp14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/util.cpp b/src/util.cpp
index 486df772fb..a997199fb0 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -72,6 +72,10 @@
#include <sys/prctl.h>
#endif
+#ifdef HAVE_MALLOPT_ARENA_MAX
+#include <malloc.h>
+#endif
+
#include <boost/algorithm/string/case_conv.hpp> // for to_lower()
#include <boost/algorithm/string/join.hpp>
#include <boost/algorithm/string/predicate.hpp> // for startswith() and endswith()
@@ -792,6 +796,16 @@ void RenameThread(const char* name)
void SetupEnvironment()
{
+#ifdef HAVE_MALLOPT_ARENA_MAX
+ // glibc-specific: On 32-bit systems set the number of arenas to 1.
+ // By default, since glibc 2.10, the C library will create up to two heap
+ // arenas per core. This is known to cause excessive virtual address space
+ // usage in our usage. Work around it by setting the maximum number of
+ // arenas to 1.
+ if (sizeof(void*) == 4) {
+ mallopt(M_ARENA_MAX, 1);
+ }
+#endif
// On most POSIX systems (e.g. Linux, but not BSD) the environment's locale
// may be invalid, in which case the "C" locale is used as fallback.
#if !defined(WIN32) && !defined(MAC_OSX) && !defined(__FreeBSD__) && !defined(__OpenBSD__)