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From: Paolo Bonzini <pbonzini@redhat.com>
To: ronnie sahlberg <ronniesahlberg@gmail.com>, Peter Lieven <pl@kamp.de>
Cc: Kevin Wolf <kwolf@redhat.com>, Michael Tokarev <mjt@tls.msk.ru>,
	qemu-devel <qemu-devel@nongnu.org>,
	Stefan Hajnoczi <stefanha@redhat.com>
Subject: Re: [Qemu-devel] [PATCH] block/iscsi: use 16 byte CDBs only when necessary
Date: Wed, 03 Sep 2014 16:18:55 +0200	[thread overview]
Message-ID: <5407234F.4060003@redhat.com> (raw)
In-Reply-To: <CAN05THTqcvmcQfkQZwtkRhr+yy_kd9VDzQwamtnkPtGkQwSxpw@mail.gmail.com>

Il 03/09/2014 16:17, ronnie sahlberg ha scritto:
> I think (a) would be best.
> But I would suggest some small modifications:
> 
> Set the default max to something even smaller, like 256 sectors. This
> should not have much effect on throughput since the client/initiator
> can just send several concurrent i/os instead of one large i/o.

I disagree.  256 sectors are 128k, that's a fairly normal I/O size.

Paolo

  reply	other threads:[~2014-09-03 14:19 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-04 13:47 [Qemu-devel] [PATCH] block/iscsi: use 16 byte CDBs only when necessary Peter Lieven
2014-06-04 14:00 ` ronnie sahlberg
2014-06-04 14:43   ` Peter Lieven
2014-06-04 14:54     ` ronnie sahlberg
2014-06-05  9:12   ` Michael Tokarev
2014-06-05  9:27     ` Peter Lieven
2014-06-17  6:14     ` Peter Lieven
2014-06-17 11:15       ` Paolo Bonzini
2014-06-17 11:37         ` Peter Lieven
2014-06-17 11:46           ` Paolo Bonzini
2014-06-17 11:50             ` Peter Lieven
2014-06-17 13:45             ` Peter Lieven
2014-09-01 15:21             ` Peter Lieven
2014-09-02 15:28               ` ronnie sahlberg
2014-09-02 18:14                 ` Peter Lieven
2014-09-02 19:30                 ` Peter Lieven
2014-09-03  8:09                   ` Peter Lieven
2014-09-03 12:31                     ` Stefan Hajnoczi
2014-09-03 13:13                       ` Peter Lieven
2014-09-03 14:17                     ` ronnie sahlberg
2014-09-03 14:18                       ` Paolo Bonzini [this message]
2014-09-03 14:48                         ` ronnie sahlberg
2014-09-03 19:29                           ` Peter Lieven
2014-06-04 15:31 ` Paolo Bonzini

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