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From: "Roberto E. Vargas Caballero" <k0ga@shike2.com>
To: 9front@9front.org
Subject: Re: [9front] Re: devfs performance
Date: Wed, 19 Jan 2022 08:51:49 +0100	[thread overview]
Message-ID: <YefDFYkEl197r0t6@simple-cc.org> (raw)
In-Reply-To: <CA+61k5-7+QdG3zaee5+cMuyqqymMsmy+7zTxG+y+Cg9xkE2OFw@mail.gmail.com>


On Mon, Jan 17, 2022 at 04:27:51PM +0100, Martijn Heil wrote:
> In the meantime I've started writing an (experimental) patch for
> devfs, that should at least work for my use if I succeed. I'll gladly
> share it if I consider it anywhere near worthy, but considering my
> inexperience with this kernel development I have no expectations.
> Nonetheless I'll try my best.
> In case anyone is interested in the technical details;
> Block-interleaved I/O is handled by interio() at /sys/src/9/port/devfs:1134.
> This in turn synchronously calls the blocking io() located at
> /sys/src/9/port/devfs:1031 for each sequential block to read from the
> inner devices.

I have interleaving in my disk configuration, and I thought that
the access was done in parallel. I  think we should take a deep look
to your patch because otherwise the interleaving configuration
does not make sense.


      parent reply	other threads:[~2022-01-19 10:02 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-16 15:27 [9front] " Martijn Heil
2022-01-17 15:27 ` [9front] " Martijn Heil
2022-01-19  2:37   ` ori
2022-01-19  7:51   ` Roberto E. Vargas Caballero [this message]

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