From: David Wuertele <dave-gnus@bfnet.com>
To: linux-ide@vger.kernel.org
Subject: Compact Flash PIO 4 tuning
Date: Mon, 05 May 2003 17:53:35 -0700 [thread overview]
Message-ID: <m3llxkyjxs.fsf@bfnet.com> (raw)
Howdy,
I'm working on an embedded system that has a CF card on the IDE bus.
The CF spec only allows PIO mode, and my card can do PIO 4. However,
when I try to stream data from this card into memory at 2 MBytes per
second, it pegs the CPU at 100%. This is ruining the performance of
my application, which has to process this data in real time.
I realize that PIO 4 requires CPU involvement, but are there ways I
can tune the kernel for copying large files to memory, so that my
application doesn't get starved of CPU?
Thanks,
Dave
next reply other threads:[~2003-05-06 0:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-06 0:53 David Wuertele [this message]
2003-05-06 5:47 ` Compact Flash PIO 4 tuning Vojtech Pavlik
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