From owner-freebsd-current  Sun Feb  2  4:18:47 2003
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Date: Sun, 02 Feb 2003 21:18:22 +0900
Message-ID: <ybshebmvptd.wl@ett.sat.t.u-tokyo.ac.jp>
From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
To: "mike" <Michael@Reifenberger.com>
Cc: Hidetoshi Shimokawa <simokawa@FreeBSD.org>,
	FreeBSD-Current <current@FreeBSD.org>
Subject: Re: -current, IBM A30p & 2 external FW-disks
In-Reply-To: <20030202112833.M8458@Reifenberger.com>
References: <200301281509.h0SF97FM007160@repoman.freebsd.org>
	<20030128100059.A29598@espresso.q9media.com>
	<20030128202924.T649@nihil.reifenberger.com>
	<ybs7kcnw5w8.wl@ett.sat.t.u-tokyo.ac.jp>
	<20030202112833.M8458@Reifenberger.com>
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At Sun, 2 Feb 2003 13:28:33 +0200,
mike wrote:
> > try some of the following: 
> >  
> > - fwcontorl -g 20 
> > - sysctl hw.firewire.sbp.max_speed=0 
> > - change SBP_QUEUE_LEN in sbp.c to 1 and rebuld module. 
> > - sysctl machdep.cpu_idle_hlt=0 
> > - sysctl debug.sbp_debug=1 and send me a dmesg. 
>  
> with all of the above I get the attached dmesg soon after 
> setting up two concurrent iozones (one per disk): 

Hmm,
Are you sure that you have chaned SBP_QUEUE_LEN to 1 and
rebuild and reinstalled it?

I suppose 'unordered execution' shouldn't happen for SBP_QUEUE_LEN=1
case.

Anyway, how about change 'maxopenings' for cam_simq_alloc() in sbp.c
to 1?

BTW, after timeout message, did the transfer resume?

/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html


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