From: Vladislav Bolkhovitin <vst@vlnb•net>
To: Andi Kleen <andi@firstfloor•org>
Cc: linux-mm@kvack•org, Christoph Hellwig <hch@infradead•org>,
James Bottomley <James.Bottomley@HansenPartnership•com>,
linux-scsi@vger•kernel.org, linux-kernel@vger•kernel.org,
scst-devel@lists•sourceforge.net,
Bart Van Assche <bart.vanassche@gmail•com>,
netdev@vger•kernel.org
Subject: Re: [RFC]: Support for zero-copy TCP transmit of user space data
Date: Fri, 19 Dec 2008 20:57:33 +0300 [thread overview]
Message-ID: <494BE08D.30101@vlnb.net> (raw)
In-Reply-To: <20081219180009.GP25779@one.firstfloor.org>
Andi Kleen, on 12/19/2008 09:00 PM wrote:
>> Sure, this is why I propose to disable that option by default in
>> distribution kernels, so it would produce no harm.
>
> That would make the option useless for most users. You might as well
> not bother merging then.
I believe 99.(9)% of users prefer don't patch kernel, if possible.
>> first, only then enable that option, then rebuild the kernel. (I'm
>> repeating it to make sure you didn't miss this my point; it was in the
>> part of my original message, which you cut out.)
>
> That was such a ridiculous suggestion, I didn't take it seriously.
>
> Also it should be really not rocket science to use a separate
> table for this.
Sorry, what do you mean? If usage of something like a hash table to map
pages to the corresponding iSCSI commands, this approach was evaluated
and rejected, because it wouldn't provide much performance increase,
which would worth the effort. See details in the end of the patch
description in http://lkml.org/lkml/2008/12/10/296
Thanks,
Vlad
next prev parent reply other threads:[~2008-12-19 17:57 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-10 18:26 [PATCH][RFC 0/23] New SCSI target framework (SCST) and 4 target drivers Vladislav Bolkhovitin
2008-12-10 19:01 ` [PATCH][RFC 21/23]: iSCSI target driver Vladislav Bolkhovitin
2008-12-11 22:55 ` Nicholas A. Bellinger
2008-12-11 22:59 ` Nicholas A. Bellinger
2008-12-12 19:26 ` Vladislav Bolkhovitin
2008-12-10 19:02 ` [PATCH][RFC 22/23]: Documentation for iSCSI-SCST Vladislav Bolkhovitin
2008-12-10 19:04 ` [PATCH][RFC 23/23]: Support for zero-copy TCP transmit of user space data Vladislav Bolkhovitin
2008-12-10 21:45 ` Evgeniy Polyakov
2008-12-11 18:16 ` Vladislav Bolkhovitin
2008-12-11 19:12 ` James Bottomley
2008-12-12 19:25 ` Vladislav Bolkhovitin
2008-12-12 19:37 ` James Bottomley
2008-12-15 17:58 ` Vladislav Bolkhovitin
2008-12-15 23:18 ` Christoph Hellwig
2008-12-16 18:57 ` Vladislav Bolkhovitin
2008-12-18 18:35 ` [RFC]: " Vladislav Bolkhovitin
2008-12-18 18:43 ` David M. Lloyd
2008-12-19 17:37 ` Vladislav Bolkhovitin
2008-12-19 19:07 ` Jens Axboe
2008-12-19 19:17 ` Vladislav Bolkhovitin
2008-12-19 19:27 ` Jens Axboe
2008-12-19 21:58 ` Evgeniy Polyakov
2008-12-23 19:11 ` Vladislav Bolkhovitin
2008-12-19 11:27 ` Andi Kleen
2008-12-19 17:38 ` Vladislav Bolkhovitin
2008-12-19 18:00 ` Andi Kleen
2008-12-19 17:57 ` Vladislav Bolkhovitin [this message]
2008-12-16 16:00 ` [PATCH][RFC 23/23]: " Bart Van Assche
2008-12-16 17:41 ` Evgeniy Polyakov
2008-12-19 20:21 ` Jeremy Fitzhardinge
2008-12-19 22:04 ` Evgeniy Polyakov
2008-12-19 22:21 ` Jeremy Fitzhardinge
2008-12-19 22:33 ` Evgeniy Polyakov
2008-12-20 1:56 ` Jeremy Fitzhardinge
2008-12-20 2:02 ` Herbert Xu
2008-12-20 6:14 ` Jeremy Fitzhardinge
2008-12-20 6:51 ` Herbert Xu
2008-12-20 7:43 ` Jeremy Fitzhardinge
2008-12-20 8:10 ` Herbert Xu
2008-12-20 10:32 ` Evgeniy Polyakov
2008-12-20 19:39 ` Jeremy Fitzhardinge
2008-12-22 0:43 ` Rusty Russell
2008-12-23 19:14 ` Vladislav Bolkhovitin
2008-12-23 19:16 ` Vladislav Bolkhovitin
2008-12-23 21:38 ` Evgeniy Polyakov
2008-12-24 14:37 ` Vladislav Bolkhovitin
2008-12-24 14:44 ` Evgeniy Polyakov
2008-12-24 17:46 ` Vladislav Bolkhovitin
2008-12-24 18:08 ` Evgeniy Polyakov
2008-12-30 17:37 ` Vladislav Bolkhovitin
2008-12-30 21:35 ` Evgeniy Polyakov
2008-12-23 19:13 ` Vladislav Bolkhovitin
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