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Date:      Wed, 04 Sep 2013 07:45:35 -0500
From:      Nathan Whitehorn <nwhitehorn@freebsd.org>
To:        Alexander Motin <mav@FreeBSD.org>
Cc:        freebsd-geom@freebsd.org, freebsd-hackers@freebsd.org, "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>, FreeBSD SCSI <freebsd-scsi@freebsd.org>, =?windows-1252?Q?Olivier_Cochard-Labb=E9?= <olivier@cochard.me>, Outback Dingo <outbackdingo@gmail.com>
Subject:   Re: [RFC][CFT] GEOM direct dispatch and fine-grained CAM locking
Message-ID:  <52272B6F.9060308@freebsd.org>
In-Reply-To: <5226DAB0.1060303@FreeBSD.org>
References:  <520D4ADB.50209@FreeBSD.org> <5224511D.4090503@FreeBSD.org> <20130903134251.GB43281@caravan.chchile.org> <CAKYr3zwjQ9K1c5smZXTESa3T5UnchYaipYQCS2OAJOUFyPBGww@mail.gmail.com> <CA+q+TcoeHDbkCOXvBjbbzOKCbb7RLYqG0jn9bHNn_CZgLGarLg@mail.gmail.com> <5226DAB0.1060303@FreeBSD.org>

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On 09/04/13 02:01, Alexander Motin wrote:
> On 04.09.2013 00:48, Olivier Cochard-Labbé wrote:
>> On Tue, Sep 3, 2013 at 8:10 PM, Outback Dingo 
>> <outbackdingo@gmail.com> wrote:
>>> Can anyone confirm how well tested/stable this patch set might be?? if
>>> theres positive input i have a zoo of dev machines i could load it 
>>> on, to
>>> help further it.
>>> Just checking to see how widely its been tested,
>>
>> I've installed this patch on 3 differents machines there status after
>> about 12hours:
>> - SUN FIRE X4170 M2 (amd64: r255178) with 6 SAS harddrives in one big
>> zraid (LSI MegaSAS Gen2 controller): Used for generating package with
>> poudriere… no probleme since;
>> - HAL/Fujitsu SPARC64-V (sparc64: r255178) with two SCSI-3 disks in
>> gmirror: Used for generating package with poudriere too… no probleme
>> since;
>
> I've forgot to mention, but GEOM direct dispatch is now active only on 
> x86 because GET_STACK_USAGE macro now defined only there and I wanted 
> to stay on a safe side. On other archs GEOM works in old queued way. 
> Somebody should port that small macro to other archs. But that is 
> still interesting data point. Thanks.

Could you describe what this macro is supposed to do so that we can do 
the porting work?
-Nathan



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