From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755178AbZHKO7U (ORCPT ); Tue, 11 Aug 2009 10:59:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754987AbZHKO7T (ORCPT ); Tue, 11 Aug 2009 10:59:19 -0400 Received: from mail-ew0-f214.google.com ([209.85.219.214]:34102 "EHLO mail-ew0-f214.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753226AbZHKO7S (ORCPT ); Tue, 11 Aug 2009 10:59:18 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=skRvYaSYVPnQrPxrXz9poaoKzsh1s8c2yLr/y46Ne7TKPtu6yoHdZv35EeBtmvpFNL KDgxmtcHRY7z9uDcJ/44OZSfIKvPVXw0cifM56zQi77CpxhQhSftjZbygc3tBRJKzjjh A++tZugla/guO5YUSb5Cm3jpH1c1toVC+kq2g= MIME-Version: 1.0 In-Reply-To: <20090811143919.GU12579@kernel.dk> References: <1249588685-4662-1-git-send-email-jens.axboe@oracle.com> <20090811143919.GU12579@kernel.dk> Date: Tue, 11 Aug 2009 16:59:18 +0200 Message-ID: Subject: Re: [PATCH 0/3]: blk-iopoll, a polled completion API for block devices From: Bart Van Assche To: Jens Axboe Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, Eric.Moore@lsi.com, jeff@garzik.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 11, 2009 at 4:39 PM, Jens Axboe wrote: > On Tue, Aug 11 2009, Bart Van Assche wrote: >> On Thu, Aug 6, 2009 at 9:58 PM, Jens Axboe 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.