From: Uwe Hermann <redacted>
Date: Mon, 16 Apr 2018 22:23:19 +0000 (+0200)
Subject: input: Increase chunk size from 16KB to 4MB.
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=a8229cd0e1683a8b028768c97c2fce141c7edd20;p=sigrok-cli.git

input: Increase chunk size from 16KB to 4MB.

This not only slightly speeds up loading files, but more importantly leads
to larger chunks being passed to input modules (and later potentially output
modules), some of which can have a large performance penalty for small chunks.

In the specific case of e.g. binary input and an .sr output file this change
can lead to a speedup of 220x or more (due to larger chunks for srzip).
---

diff --git a/input.c b/input.c
index 21c28cd..9a9545f 100644
--- a/input.c
+++ b/input.c
@@ -28,7 +28,7 @@
 #include <glib.h>
 #include "sigrok-cli.h"
 
-#define BUFSIZE (16 * 1024)
+#define BUFSIZE (4 * 1024 * 1024)
 
 static void load_input_file_module(void)
 {