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
next prev parent 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
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