From: Konstantin Dorfman <kdorfman@codeaurora.org>
To: "Bruce Ford (bford)" <bford@micron.com>
Cc: "linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>
Subject: Re: MMC Driver Throughput
Date: Thu, 31 Jan 2013 15:36:45 +0200 [thread overview]
Message-ID: <510A736D.3090600@codeaurora.org> (raw)
In-Reply-To: <DB9374B0B2CB664D9425A1916C7DE85A36804AA8@NTXBOIMBX06.micron.com>
Hello Bruce,
On 1/30/2013 8:35 PM, Bruce Ford (bford) wrote:
> Question:
>
> Has any testing been done to determine the maximum data throughput to/from
> a MMC device; assuming the MMC device takes zero time to complete tasks?
>
> Put another way - at what level of IOPS does the kernel/driver become the
> bottleneck, instead of the storage device?
This should depend on specific host controller, hardware and driver.
You can look from another end:
kernel/driver overhead = "Row max TPT of of the MMC device" -
"lmdd/iozone/tiotest max TPT"
Where the row tpt can be found from card vendor data.
--
Konstantin Dorfman,
QUALCOMM ISRAEL, on behalf of Qualcomm Innovation Center,
Inc. is a member of Code Aurora Forum,
hosted by The Linux Foundation
prev parent reply other threads:[~2013-01-31 13:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-30 18:35 MMC Driver Throughput Bruce Ford (bford)
2013-01-31 13:36 ` Konstantin Dorfman [this message]
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