From: Uwe Hermann <redacted>
Date: Thu, 16 Mar 2017 22:59:58 +0000 (+0100)
Subject: session_driver.c: Increase chunk size for slightly better performance.
X-Git-Tag: libsigrok-0.5.0~84
X-Git-Url: https://sigrok.org/gitweb/?p=libsigrok.git;a=commitdiff_plain;h=df3e608a20620836ecad6d8d4dc6c0b27b1658a8

session_driver.c: Increase chunk size for slightly better performance.

Increasing the chunk size from 512ksamples to 4Msamples leads to
slightly faster session file loading from sigrok session (*.sr) files
in frontends, while not looking too "chunky".

The performance increase is not really massive, but still noticeable.
A further increase to, say, 10 or 100Msamples shows no further
noticeable improvements.
---

diff --git a/src/session_driver.c b/src/session_driver.c
index 0fecd6b8..79a3b37b 100644
--- a/src/session_driver.c
+++ b/src/session_driver.c
@@ -31,7 +31,7 @@
 
 /* size of payloads sent across the session bus */
 /** @cond PRIVATE */
-#define CHUNKSIZE (512 * 1024)
+#define CHUNKSIZE (4 * 1024 * 1024)
 /** @endcond */
 
 SR_PRIV struct sr_dev_driver session_driver_info;