diff --git a/src/arena.c b/src/arena.c
index 3e2fc583..78b13749 100644
--- a/src/arena.c
+++ b/src/arena.c
@@ -168,7 +168,7 @@ static size_t mi_page_full_size(mi_page_t* page) {
     mi_assert_internal((uint8_t*)page->memid.mem.os.base <= (uint8_t*)page);
     const ptrdiff_t presize = (uint8_t*)page - (uint8_t*)page->memid.mem.os.base;
     mi_assert_internal((ptrdiff_t)page->memid.mem.os.size >= presize);
-    return (presize > page->memid.mem.os.size ? 0 : page->memid.mem.os.size - presize);
+    return (presize > (ptrdiff_t)page->memid.mem.os.size ? 0 : page->memid.mem.os.size - presize);
   }
   else {
     return 0;
diff --git a/src/options.c b/src/options.c
index 7b643092..9ebb0b6a 100644
--- a/src/options.c
+++ b/src/options.c
@@ -144,7 +144,7 @@ static mi_option_desc_t options[_mi_option_last] =
 #else
   { 1, UNINIT, MI_OPTION(eager_commit_delay) },         // the first N segments per thread are not eagerly committed (but per page in the segment on demand)
 #endif
-  { 2500,UNINIT, MI_OPTION_LEGACY(purge_delay,reset_delay) },  // purge delay in milli-seconds
+  { 1000,UNINIT, MI_OPTION_LEGACY(purge_delay,reset_delay) },  // purge delay in milli-seconds
   { 0,   UNINIT, MI_OPTION(use_numa_nodes) },           // 0 = use available numa nodes, otherwise use at most N nodes.
   { 0,   UNINIT, MI_OPTION_LEGACY(disallow_os_alloc,limit_os_alloc) },           // 1 = do not use OS memory for allocation (but only reserved arenas)
   { 100, UNINIT, MI_OPTION(os_tag) },                   // only apple specific for now but might serve more or less related purpose
@@ -168,7 +168,7 @@ static mi_option_desc_t options[_mi_option_last] =
   { MI_DEFAULT_GUARDED_SAMPLE_RATE,
          UNINIT, MI_OPTION(guarded_sample_rate)},       // 1 out of N allocations in the min/max range will be guarded (=4000)
   { 0,   UNINIT, MI_OPTION(guarded_sample_seed)},
-  { 1,   UNINIT, MI_OPTION_LEGACY(page_reclaim_on_free, abandoned_reclaim_on_free) },// reclaim an abandoned segment on a free
+  { 0,   UNINIT, MI_OPTION_LEGACY(page_reclaim_on_free, abandoned_reclaim_on_free) },// reclaim an abandoned segment on a free
   { 2,   UNINIT, MI_OPTION(page_full_retain) },
   { 4,   UNINIT, MI_OPTION(page_max_candidates) },
   { 0,   UNINIT, MI_OPTION(max_vabits) },