From a2c199affb8e92ce1e0206757130e2fb72cc0cfd Mon Sep 17 00:00:00 2001
From: Werner Koch <wk@gnupg.org>
Date: Mon, 8 May 2023 13:09:27 +0200
Subject: [PATCH] kbx: For non-Windows use 64k buffers by default instead of
 128k.

* kbx/keybox-init.c (DEFAULT_LL_BUFFER_SIZE): New.
--

A simple gpg --check-sigs benchmark showed on Linux a small
performance peak at around 64k (5m52 vs. 6m8 for 128k and 6m33 for
system size).
---
 kbx/keybox-init.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/kbx/keybox-init.c b/kbx/keybox-init.c
index c83c4712f..439d1c477 100644
--- a/kbx/keybox-init.c
+++ b/kbx/keybox-init.c
@@ -28,7 +28,13 @@
 #include "../common/sysutils.h"
 #include "../common/mischelp.h"
 
-static unsigned int ll_buffer_size = 128;
+#ifdef HAVE_W32_SYSTEM
+# define DEFAULT_LL_BUFFER_SIZE 128
+#else
+# define DEFAULT_LL_BUFFER_SIZE 64
+#endif
+
+static unsigned int ll_buffer_size = DEFAULT_LL_BUFFER_SIZE;
 
 static KB_NAME kb_names;