linux-kernel - Re: solid state drive access and context switching

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Message-id: <4755FAC9.5050901@shaw.ca>
Date:	Tue, 04 Dec 2007 19:11:37 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	Chris Friesen <cfriesen@...tel.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: solid state drive access and context switching

Chris Friesen wrote:
> 
> Over on comp.os.linux.development.system someone asked an interesting 
> question, and I thought I'd mention it here.
> 
> Given a fast low-latency solid state drive, would it ever be beneficial 
> to simply wait in the kernel for synchronous read/write calls to 
> complete?  The idea is that you could avoid at least two task context 
> switches, and if the data access can be completed at less cost than 
> those context switches it could be an overall win.
> 
> Has anyone played with this concept?

I don't think most SSDs are fast enough that it would really be worth 
avoiding the context switch for.. I could be wrong though.

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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