Date: Thu, 23 Mar 1995 03:45:43 +1000 From: Bruce Evans <bde@zeta.org.au> To: bde@zeta.org.au, phk@ref.tfs.com Cc: freebsd-hackers@freefall.cdrom.com, kuku@gilberto.physik.rwth-aachen.de Subject: Re: Why IDE is bad Message-ID: <199503221745.DAA20994@godzilla.zeta.org.au>
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>> This might explain why my Intr time is so much lower than Poul's. >> I have only 16MB, and don't use option BOUNCE_BUFFERS. The bcopy() >> for bouncing is done in a call from biodone(). biodone() is called >> from the interrupt handler, at least for the wd driver. >Excuse moi! Why would we need bounce-buffers for wd.c when the IO >is done using "REP INSW" ?? We don't. We need to call biodone() for finishing i/o for all drivers, and I'm not 100% sure that it is called from the interrupt handler except for the wd driver. Bruce
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