From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 2/2] ramfs: increase chunk size to 8192 bytes
Date: Mon, 5 Dec 2011 10:04:00 +0100 [thread overview]
Message-ID: <1323075840-29783-1-git-send-email-s.hauer@pengutronix.de> (raw)
dlmalloc seems to work more efficient with this chunk size.
Copying a bigger file (3MB) takes 271ms vs. 125ms on a i.MX27
board. Even bigger chunk sizes do not further improve performance.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
fs/ramfs.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/fs/ramfs.c b/fs/ramfs.c
index db417e1..5e352f2 100644
--- a/fs/ramfs.c
+++ b/fs/ramfs.c
@@ -30,7 +30,7 @@
#include <linux/stat.h>
#include <xfuncs.h>
-#define CHUNK_SIZE 4096
+#define CHUNK_SIZE (4096 * 2)
struct ramfs_chunk {
char *data;
--
1.7.7.3
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
reply other threads:[~2011-12-05 9:04 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1323075840-29783-1-git-send-email-s.hauer@pengutronix.de \
--to=s.hauer@pengutronix.de \
--cc=barebox@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox