public inbox for u-boot@lists.denx.de
 help / color / mirror / Atom feed
From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] arm: socfpga: Fix cache configuration
Date: Thu, 17 Sep 2015 17:37:55 +0200	[thread overview]
Message-ID: <201509171737.55414.marex@denx.de> (raw)
In-Reply-To: <1442503829-28882-1-git-send-email-sr@denx.de>

On Thursday, September 17, 2015 at 05:30:29 PM, Stefan Roese wrote:
> By not defining CONFIG_SYS_ARM_CACHE_WRITEALLOC, the WRITEBACK cache
> policy is selected. This leads to much better performance on the SoCFPGA.
> A quick network test shows this:
> 
> Without this patch:
> => tftp 100000 big-40mb
> Speed: 1000, full duplex
> Using dwmac.ff702000 device
> TFTP from server 192.168.1.54; our IP address is 192.168.1.252
> Filename 'big-40mb'.
> Load address: 0x100000
> Loading: #################################################################
>          #################################################################
>          #################################################################
>          #################################################################
>          ##########################
>          2.5 MiB/s
> 
> With this patch:
> => tftp 100000 big-40mb
> Speed: 1000, full duplex
> Using dwmac.ff702000 device
> TFTP from server 192.168.1.54; our IP address is 192.168.1.252
> Filename 'big-40mb'.
> Load address: 0x100000
> Loading: #################################################################
>          #################################################################
>          #################################################################
>          #################################################################
>          ##########################
>          7.6 MiB/s
> 
> A performance improvement of factor ~3.
> 
> Signed-off-by: Stefan Roese <sr@denx.de>
> Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
> Cc: Chin Liang See <clsee@altera.com>
> Cc: Pavel Machek <pavel@denx.de>
> Cc: Marek Vasut <marex@denx.de>

OUCH! This actually came from the original Altera sources, darn :-(

Acked-by: Marek Vasut <marex@denx.de>

Best regards,
Marek Vasut

  reply	other threads:[~2015-09-17 15:37 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-17 15:30 [U-Boot] [PATCH] arm: socfpga: Fix cache configuration Stefan Roese
2015-09-17 15:37 ` Marek Vasut [this message]
2015-09-18  6:16 ` Pavel Machek
2015-09-18  6:24   ` Stefan Roese
2015-09-18  6:34     ` Pavel Machek
2015-09-18  6:41       ` Stefan Roese
2015-11-09  0:10 ` Marek Vasut
2015-11-09 11:42   ` Stefan Roese
2015-11-09 13:49     ` Marek Vasut
2015-11-09 15:46       ` Stefan Roese
2015-11-09 16:02         ` Marek Vasut
2015-11-12  0:49           ` Chin Liang See
2015-11-12  0:53             ` Marek Vasut
2015-11-12  2:33               ` Chin Liang See
2015-11-12  3:48                 ` Marek Vasut
2015-12-03  0:10                 ` Marek Vasut
2015-12-03 16:11                   ` Chin Liang See
2015-12-03 16:22                     ` Marek Vasut
2015-12-07 14:37                       ` Chin Liang See
2015-12-07 14:44                         ` Marek Vasut
2015-12-07 14:47                           ` Chin Liang See
2015-12-08 11:13                           ` Pavel Machek
2015-12-08 12:04                             ` Stefan Roese
2015-12-08 12:54                               ` Marek Vasut
2015-12-09 13:48                                 ` Chin Liang See
2015-12-09 14:12                                   ` Marek Vasut
2015-12-08 12:53                             ` Marek Vasut
2015-12-09 13:50                               ` Chin Liang See

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=201509171737.55414.marex@denx.de \
    --to=marex@denx.de \
    --cc=u-boot@lists.denx.de \
    /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