diff --git a/include/jemalloc/internal/arena.h b/include/jemalloc/internal/arena.h
index 0e14c2c4..b435d0b0 100644
--- a/include/jemalloc/internal/arena.h
+++ b/include/jemalloc/internal/arena.h
@@ -385,6 +385,7 @@ extern ssize_t	opt_lg_dirty_mult;
  * and all accesses are via the SMALL_SIZE2BIN macro.
  */
 extern uint8_t const	small_size2bin[];
+extern uint32_t const	small_bin2size[];
 #define	SMALL_SIZE2BIN(s)	(small_size2bin[(s-1) >> LG_TINY_MIN])
 
 extern arena_bin_info_t	arena_bin_info[NBINS];
@@ -964,7 +965,7 @@ arena_salloc(const void *ptr, bool demote)
 		assert(arena_mapbits_large_get(chunk, pageind) != 0 ||
 		    arena_ptr_small_binind_get(ptr, arena_mapbits_get(chunk,
 		    pageind)) == binind);
-		ret = arena_bin_info[binind].reg_size;
+		ret = small_bin2size[binind];
 	}
 
 	return (ret);
diff --git a/include/jemalloc/internal/jemalloc_internal.h.in b/include/jemalloc/internal/jemalloc_internal.h.in
index 9c79ae00..17d77623 100644
--- a/include/jemalloc/internal/jemalloc_internal.h.in
+++ b/include/jemalloc/internal/jemalloc_internal.h.in
@@ -602,7 +602,7 @@ s2u(size_t size)
 {
 
 	if (size <= SMALL_MAXCLASS)
-		return (arena_bin_info[SMALL_SIZE2BIN(size)].reg_size);
+		return (small_bin2size[SMALL_SIZE2BIN(size)]);
 	if (size <= arena_maxclass)
 		return (PAGE_CEILING(size));
 	return (CHUNK_CEILING(size));
@@ -645,7 +645,7 @@ sa2u(size_t size, size_t alignment)
 
 	if (usize <= arena_maxclass && alignment <= PAGE) {
 		if (usize <= SMALL_MAXCLASS)
-			return (arena_bin_info[SMALL_SIZE2BIN(usize)].reg_size);
+			return (small_bin2size[SMALL_SIZE2BIN(usize)]);
 		return (PAGE_CEILING(usize));
 	} else {
 		size_t run_size;
diff --git a/include/jemalloc/internal/private_symbols.txt b/include/jemalloc/internal/private_symbols.txt
index 032bed4f..12d64dc4 100644
--- a/include/jemalloc/internal/private_symbols.txt
+++ b/include/jemalloc/internal/private_symbols.txt
@@ -346,6 +346,7 @@ rtree_set
 s2u
 sa2u
 set_errno
+small_bin2size
 small_size2bin
 stats_cactive
 stats_cactive_add
diff --git a/include/jemalloc/internal/tcache.h b/include/jemalloc/internal/tcache.h
index 96447f42..098d19ae 100644
--- a/include/jemalloc/internal/tcache.h
+++ b/include/jemalloc/internal/tcache.h
@@ -266,14 +266,14 @@ tcache_alloc_small(tcache_t *tcache, size_t size, bool zero)
 	binind = SMALL_SIZE2BIN(size);
 	assert(binind < NBINS);
 	tbin = &tcache->tbins[binind];
-	size = arena_bin_info[binind].reg_size;
+	size = small_bin2size[binind];
 	ret = tcache_alloc_easy(tbin);
 	if (ret == NULL) {
 		ret = tcache_alloc_small_hard(tcache, tbin, binind);
 		if (ret == NULL)
 			return (NULL);
 	}
-	assert(tcache_salloc(ret) == arena_bin_info[binind].reg_size);
+	assert(tcache_salloc(ret) == size);
 
 	if (zero == false) {
 		if (config_fill) {
@@ -296,7 +296,7 @@ tcache_alloc_small(tcache_t *tcache, size_t size, bool zero)
 	if (config_stats)
 		tbin->tstats.nrequests++;
 	if (config_prof)
-		tcache->prof_accumbytes += arena_bin_info[binind].reg_size;
+		tcache->prof_accumbytes += size;
 	tcache_event(tcache);
 	return (ret);
 }
diff --git a/src/arena.c b/src/arena.c
index d5741000..37487ffa 100644
--- a/src/arena.c
+++ b/src/arena.c
@@ -7,6 +7,14 @@
 ssize_t		opt_lg_dirty_mult = LG_DIRTY_MULT_DEFAULT;
 arena_bin_info_t	arena_bin_info[NBINS];
 
+JEMALLOC_ALIGNED(CACHELINE)
+const uint32_t	small_bin2size[NBINS] = {
+#define SIZE_CLASS(bin, delta, size)		\
+	size,
+	SIZE_CLASSES
+#undef SIZE_CLASS
+};
+
 JEMALLOC_ALIGNED(CACHELINE)
 const uint8_t	small_size2bin[] = {
 #define	S2B_8(i)	i,
@@ -1615,7 +1623,7 @@ arena_malloc_small(arena_t *arena, size_t size, bool zero)
 	binind = SMALL_SIZE2BIN(size);
 	assert(binind < NBINS);
 	bin = &arena->bins[binind];
-	size = arena_bin_info[binind].reg_size;
+	size = small_bin2size[binind];
 
 	malloc_mutex_lock(&bin->lock);
 	if ((run = bin->runcur) != NULL && run->nfree > 0)