add_pages_fsa_vmarray.log

      1 adding a page of size 14336 for bin = 12
      1 adding a page of size 20480 for bin = 18
      1 adding a page of size 21504 for bin = 19
      1 adding a page of size 28672 for bin = 26
      1 adding a page of size 31744 for bin = 29
      1 adding a page of size 34816 for bin = 32
      2 adding a page of size 18432 for bin = 16
      4 adding a page of size 19456 for bin = 17
      4 adding a page of size 23552 for bin = 21
      4 adding a page of size 50176 for bin = 47
      5 adding a page of size 16384 for bin = 14
      5 adding a page of size 47104 for bin = 44
      6 adding a page of size 22528 for bin = 20
      6 adding a page of size 25600 for bin = 23
     15 adding a page of size 13312 for bin = 11
     27 adding a page of size 5120 for bin = 3
     27 adding a page of size 6144 for bin = 4
     58 adding a page of size 12288 for bin = 10
     65 adding a page of size 66560 for bin = 63
    102 adding a page of size 3072 for bin = 1
    112 adding a page of size 10240 for bin = 8
    128 adding a page of size 2048 for bin = 0
    133 adding a page of size 11264 for bin = 9
    149 adding a page of size 33792 for bin = 31
    833 adding a page of size 4096 for bin = 2
   6591 adding a page of size 9216 for bin = 7
   9706 adding a page of size 8192 for bin = 6
  10136 adding a page of size 17408 for bin = 15
  29739 adding a page of size 7168 for bin = 5

add_pages_fsa_vmarray_plus_bigger_pages.log

      1 adding a page of size 14336 for bin = 12
      1 adding a page of size 20480 for bin = 18
      1 adding a page of size 21504 for bin = 19
      1 adding a page of size 28672 for bin = 26
      1 adding a page of size 31744 for bin = 29
      1 adding a page of size 34816 for bin = 32
      2 adding a page of size 18432 for bin = 16
      4 adding a page of size 19456 for bin = 17
      4 adding a page of size 23552 for bin = 21
      4 adding a page of size 50176 for bin = 47
      5 adding a page of size 16384 for bin = 14
      5 adding a page of size 47104 for bin = 44
      6 adding a page of size 20480 for bin = 3
      6 adding a page of size 22528 for bin = 20
      6 adding a page of size 24576 for bin = 4
      6 adding a page of size 25600 for bin = 23
     15 adding a page of size 13312 for bin = 11
     25 adding a page of size 12288 for bin = 1
     28 adding a page of size 40960 for bin = 8
     31 adding a page of size 8192 for bin = 0
     52 adding a page of size 65536 for bin = 2
     58 adding a page of size 12288 for bin = 10
     65 adding a page of size 66560 for bin = 63
    133 adding a page of size 11264 for bin = 9
    149 adding a page of size 33792 for bin = 31
   1267 adding a page of size 139264 for bin = 15
   1646 adding a page of size 36864 for bin = 7
   1858 adding a page of size 114688 for bin = 5
   2426 adding a page of size 32768 for bin = 6

add_pages_master.log

      1 adding a page of size 14336 for bin = 12
      1 adding a page of size 20480 for bin = 18
      1 adding a page of size 21504 for bin = 19
      1 adding a page of size 22528 for bin = 20
      1 adding a page of size 28672 for bin = 26
      1 adding a page of size 33792 for bin = 31
      1 adding a page of size 34816 for bin = 32
      1 adding a page of size 47104 for bin = 44
      2 adding a page of size 16384 for bin = 14
      2 adding a page of size 18432 for bin = 16
      2 adding a page of size 19456 for bin = 17
      4 adding a page of size 23552 for bin = 21
      4 adding a page of size 25600 for bin = 23
      4 adding a page of size 50176 for bin = 47
      8 adding a page of size 13312 for bin = 11
      8 adding a page of size 66560 for bin = 63
     17 adding a page of size 9216 for bin = 7
     18 adding a page of size 5120 for bin = 3
     25 adding a page of size 6144 for bin = 4
     45 adding a page of size 3072 for bin = 1
     56 adding a page of size 10240 for bin = 8
     56 adding a page of size 12288 for bin = 10
     88 adding a page of size 2048 for bin = 0
    131 adding a page of size 11264 for bin = 9
    412 adding a page of size 4096 for bin = 2
   8902 adding a page of size 17408 for bin = 15
   8919 adding a page of size 8192 for bin = 6
  25042 adding a page of size 7168 for bin = 5

add_pages_master_plus_bigger_pages.log

      1 adding a page of size 18432 for bin = 16
      1 adding a page of size 20480 for bin = 18
      1 adding a page of size 21504 for bin = 19
      1 adding a page of size 22528 for bin = 20
      1 adding a page of size 28672 for bin = 26
      1 adding a page of size 33792 for bin = 31
      1 adding a page of size 34816 for bin = 32
      1 adding a page of size 47104 for bin = 44
      2 adding a page of size 16384 for bin = 14
      2 adding a page of size 19456 for bin = 17
      4 adding a page of size 23552 for bin = 21
      4 adding a page of size 36864 for bin = 7
      4 adding a page of size 50176 for bin = 47
      5 adding a page of size 20480 for bin = 3
      5 adding a page of size 25600 for bin = 23
      6 adding a page of size 24576 for bin = 4
      8 adding a page of size 66560 for bin = 63
      9 adding a page of size 13312 for bin = 11
     13 adding a page of size 40960 for bin = 8
     19 adding a page of size 12288 for bin = 1
     25 adding a page of size 65536 for bin = 2
     28 adding a page of size 8192 for bin = 0
     56 adding a page of size 12288 for bin = 10
    131 adding a page of size 11264 for bin = 9
   1210 adding a page of size 139264 for bin = 15
   1852 adding a page of size 114688 for bin = 5
   2426 adding a page of size 32768 for bin = 6

bigger_pages.patch

diff --git src/core/fixedsizealloc.c src/core/fixedsizealloc.c
index 9ee7304c9..345a3a521 100644
--- src/core/fixedsizealloc.c
+++ src/core/fixedsizealloc.c
@@ -2,6 +2,9 @@
 
 #include "memdebug.h"
 
+#define HEAPTRACK_DEFINE_VALGRIND_MACROS
+#include "heaptrack_api.h"
+
 /* The fixed size allocator provides a thread-safe mechanism for getting and
  * releasing fixed-size chunks of memory. Requests larger blocks from the
  * operating system, and then allocates out of them. Can certainly be further
@@ -88,9 +91,16 @@ static void setup_bin(MVMFixedSizeAlloc *al, MVMuint32 bin) {
     MVMuint32 page_size = MVM_FSA_PAGE_ITEMS * ((bin + 1) << MVM_FSA_BIN_BITS) + MVM_FSA_REDZONE_BYTES * 2 * MVM_FSA_PAGE_ITEMS;
 
     /* We'll just allocate a single page to start off with. */
+    if (bin == 2 || bin == 5)
+        page_size *= 24;
+    else if (bin == 15)
+        page_size *= 8;
+    else if (bin <= 8)
+        page_size *= 4;
     al->size_classes[bin].num_pages = 1;
     al->size_classes[bin].pages     = MVM_malloc(sizeof(void *) * al->size_classes[bin].num_pages);
-    al->size_classes[bin].pages[0]  = MVM_malloc(page_size);
+    for (int i = 0; i < al->size_classes[bin].num_pages; i++)
+    al->size_classes[bin].pages[i]  = MVM_malloc(page_size);
 
     /* Set up allocation position and limit. */
     al->size_classes[bin].alloc_pos = al->size_classes[bin].pages[0];
@@ -101,6 +111,13 @@ static void setup_bin(MVMFixedSizeAlloc *al, MVMuint32 bin) {
 static void add_page(MVMFixedSizeAlloc *al, MVMuint32 bin) {
     /* Work out page size. */
     MVMuint32 page_size = MVM_FSA_PAGE_ITEMS * ((bin + 1) << MVM_FSA_BIN_BITS) + MVM_FSA_REDZONE_BYTES * 2 * MVM_FSA_PAGE_ITEMS;
+    if (bin == 2 || bin == 5)
+        page_size *= 24;
+    else if (bin == 15)
+        page_size *= 8;
+    else if (bin <= 8)
+        page_size *= 4;
+    fprintf(stderr, "adding a page of size %u for bin = %u\n", page_size, bin);
 
     /* Add the extra page. */
     MVMuint32 cur_page = al->size_classes[bin].num_pages;