* FS performance with SD/MMC card
@ 2008-04-28 20:51 Kallol Biswas
2008-04-28 22:32 ` Ed Tomlinson
0 siblings, 1 reply; 2+ messages in thread
From: Kallol Biswas @ 2008-04-28 20:51 UTC (permalink / raw)
To: linux-kernel
Hi,
Someone has asked how fast can a linux FS write to a SD/MMC card?
Answer to this will help make a product decision.
Kallol Biswas
NucleoDyne Systems, Inc.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: FS performance with SD/MMC card
2008-04-28 20:51 FS performance with SD/MMC card Kallol Biswas
@ 2008-04-28 22:32 ` Ed Tomlinson
0 siblings, 0 replies; 2+ messages in thread
From: Ed Tomlinson @ 2008-04-28 22:32 UTC (permalink / raw)
To: Kallol Biswas; +Cc: linux-kernel
Hi,
Take a look at:
http://intr.overt.org/blog/?p=66
The problem he mentions is due to dynamic cpu speed scaling to save power. When its disabled 12.9M/s comes back...
The support for high speed is in the stock linux kernel. Nokia's kernel drops it since some of the HW
they use for the SD card support has problems with the high speed...
Thanks
Ed
On April 28, 2008, Kallol Biswas wrote:
> Hi,
> Someone has asked how fast can a linux FS write to a SD/MMC card?
>
> Answer to this will help make a product decision.
>
>
> Kallol Biswas
> NucleoDyne Systems, Inc.
> --
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2008-04-28 20:51 FS performance with SD/MMC card Kallol Biswas
2008-04-28 22:32 ` Ed Tomlinson
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