Optimize the configuration of the port heap. Previously the max bin size was

512 bytes with a heap page of 2048 bytes resulting in excessive waste for
allocations between 512 and 1023 bytes. Also tune the requested alignment so
that sizeof(port_message) (currently 28 bytes) can occupy one allocation unit
without waste.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42340 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/port.cpp

@@ -760,9 +760,9 @@ port_init(kernel_args *args)
 		return B_ERROR;
 	}
 
-	static const heap_class kBufferHeapClass = {"default", 100,
+	static const heap_class kBufferHeapClass = { "port heap", 100,
 		PORT_MAX_MESSAGE_SIZE + sizeof(port_message), 2 * 1024,
-		sizeof(port_message), 8, 4, 64};
+		sizeof(port_message), 4, 2, 24 };
 	sPortAllocator = heap_create_allocator("port buffer", base,
 		kInitialPortBufferSize, &kBufferHeapClass, true);
 	if (sPortAllocator == NULL) {