linux-kernel - Re: [PATCH 0/3]: blk-iopoll, a polled completion API for block devices

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Message-ID: <e2e108260908110759w4fbbb5dejf852ba272fa29d75@mail.gmail.com>
Date:	Tue, 11 Aug 2009 16:59:18 +0200
From:	Bart Van Assche <bart.vanassche@...il.com>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	Eric.Moore@....com, jeff@...zik.org
Subject: Re: [PATCH 0/3]: blk-iopoll, a polled completion API for block 
	devices

On Tue, Aug 11, 2009 at 4:39 PM, Jens Axboe<jens.axboe@...cle.com> wrote:
> On Tue, Aug 11 2009, Bart Van Assche wrote:
>> On Thu, Aug 6, 2009 at 9:58 PM, Jens Axboe <jens.axboe@...cle.com> wrote:
>> > Anyway, YMMV, I would appreciate some test results (and as usual, that
>> > even includes just saying that it boots and functions for you). If
>> > people feel adventurous, patches for other controllers will be happily
>> > queued up for testing. I may even be convinced to implement support
>> > for your controller of choice, if you have some fast storage hooked up
>> > and would like to experiment. Generally, adding support to a driver is
>> > not very hard and the two conversions included were also meant to serve
>> > as an inspiration.
>>
>> Sounds very interesting. Have you already considered patching the SRP
>> initiator ? During the SRP performance tests I ran CPU usage on the
>> initiator was more than 95% and on the target less than 10%.
>
> No I haven't, if you point me at which srp files, I can take a look.

The relevant source files are:
include/scsi/srp.h
include/scsi/scsi_transport_srp.h
drivers/infiniband/ulp/srp/ib_srp.h
drivers/infiniband/ulp/srp/ib_srp.c
drivers/scsi/scsi_transport_srp.c
drivers/scsi/libsrp.c
drivers/scsi/scsi_transport_srp_internal.h

Bart.
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