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Date: Thu, 8 Feb 2001 19:50:32 +0000
From: "Stephen C. Tweedie" <sct@redhat.com>
To: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Cc: Pavel Machek <pavel@suse.cz>, Linus Torvalds <torvalds@transmeta.com>,
        Jens Axboe <axboe@suse.de>, Marcelo Tosatti <marcelo@conectiva.com.br>,
        Manfred Spraul <manfred@colorfullife.com>,
        Ben LaHaise <bcrl@redhat.com>, Ingo Molnar <mingo@elte.hu>,
        "Stephen C. Tweedie" <sct@redhat.com>,
        Alan Cox <alan@lxorguk.ukuu.org.uk>, Steve Lord <lord@sgi.com>,
        Linux Kernel List <linux-kernel@vger.kernel.org>,
        kiobuf-io-devel@lists.sourceforge.net, Ingo Molnar <mingo@redhat.com>
Subject: Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait
Message-ID: <20010208195032.H9130@redhat.com>
In-Reply-To: <20010208001513.B189@bug.ucw.cz> <Pine.LNX.3.96.1010208145857.24587C-100000@artax.karlin.mff.cuni.cz>
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In-Reply-To: <Pine.LNX.3.96.1010208145857.24587C-100000@artax.karlin.mff.cuni.cz>; from mikulas@artax.karlin.mff.cuni.cz on Thu, Feb 08, 2001 at 03:52:35PM +0100
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Hi,

On Thu, Feb 08, 2001 at 03:52:35PM +0100, Mikulas Patocka wrote:
> 
> > How do you write high-performance ftp server without threads if select
> > on regular file always returns "ready"?
> 
> No, it's not really possible on Linux. Use SYS$QIO call on VMS :-)

Ahh, but even VMS SYS$QIO is synchronous at doing opens, allocation of
the IO request packets, and mapping file location to disk blocks.
Only the data IO is ever async (and Ben's async IO stuff for Linux
provides that too).

--Stephen
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