MINOR: pools: increase MAX_BASE_POOLS to 64
When not sharing pools (i.e. when building with -DDEBUG_DONT_SHARE_POOLS)
we have about 47 pools right now, while MAX_BASE_POOLS is only 32, meaning
that only the first 32 ones will benefit from a per-thread cache entry.
This totally kills performance when pools are not shared (roughly -20%).
Let's double the limit to gain some margin, and make it possible to set
it as a build option.
It might be useful to backport this to stable versions as they're likely
to be affected as well.
diff --git a/include/haproxy/pool-t.h b/include/haproxy/pool-t.h
index e81004c..ac8f17e 100644
--- a/include/haproxy/pool-t.h
+++ b/include/haproxy/pool-t.h
@@ -65,7 +65,9 @@
#define POOL_LINK(pool, item) ((void **)(item))
#endif
-#define MAX_BASE_POOLS 32
+#ifndef MAX_BASE_POOLS
+#define MAX_BASE_POOLS 64
+#endif
#define POOL_AVG_SAMPLES 1024