* 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. > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > > ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2008-04-28 23:05 UTC | newest] Thread overview: 2+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2008-04-28 20:51 FS performance with SD/MMC card Kallol Biswas 2008-04-28 22:32 ` Ed Tomlinson
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