From: Willy Tarreau <w@1wt.eu>
Date: Mon, 11 Aug 2025 15:31:08 +0000 (+0200)
Subject: OPTIM: buffers: align the buffer pool to 64
X-Git-Tag: v3.3-dev7~34
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=77335f52fca6c3cdf740baebc145d998f836fd6d;p=thirdparty%2Fhaproxy.git

OPTIM: buffers: align the buffer pool to 64

This struct is used by memcpy() and friends, particularly during the
early recv() and send(). By keeping it 64-byte aligned, we let the
underlying libs/kernel use optimal operations (e.g.  AVX512) for memory
copies while right now it's just random (buffers are found to be equally
aligned to 32 and 64 in practice).
---

diff --git a/src/dynbuf.c b/src/dynbuf.c
index 336e40d1d..12dac1a58 100644
--- a/src/dynbuf.c
+++ b/src/dynbuf.c
@@ -32,7 +32,7 @@ int init_buffer()
 	int done;
 	int i;
 
-	pool_head_buffer = create_pool("buffer", global.tune.bufsize, MEM_F_SHARED|MEM_F_EXACT);
+	pool_head_buffer = create_aligned_pool("buffer", global.tune.bufsize, 64, MEM_F_SHARED|MEM_F_EXACT);
 	if (!pool_head_buffer)
 		return 0;