From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [202.177.17.107] (helo=donut.udomain.com.hk) by pentafluge.infradead.org with smtp (Exim 4.22 #5 (Red Hat Linux)) id 1A5LDY-00074C-Ff for ; Fri, 03 Oct 2003 09:23:16 +0100 Message-ID: <3F7D31B7.7020400@hectrix.com> Date: Fri, 03 Oct 2003 16:22:15 +0800 From: Selwyn Tang MIME-Version: 1.0 To: David Woodhouse References: <3F7CD9CA.5090805@hectrix.com> <1065160480.16088.0.camel@imladris.demon.co.uk> In-Reply-To: <1065160480.16088.0.camel@imladris.demon.co.uk> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit cc: linux-mtd@lists.infradead.org Subject: Re: high cpu usage using nftl for DOC2000 List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi Dave, On 10/03/2003 01:54 PM, David Woodhouse wrote: > Boot with 'profile=1' and use readprofile to see where it's spending all > the CPU time. Note your driver must be built-in to the kernel for this. The followings, among others, are reported by readprofile: 147 handle_IRQ_event 1.5978 17 ide_outb 1.4167 3288 _DoC_Delay 32.8800 6634 __rdtsc_delay 236.9286 I don't know how to interpret them :-) Selwyn