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Date:      Thu, 6 Feb 2003 12:15:38 +0100 (CET)
From:      Michael Reifenberger <root@nihil.reifenberger.com>
To:        Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
Cc:        Hidetoshi Shimokawa <simokawa@FreeBSD.org>, FreeBSD-Current <current@FreeBSD.org>
Subject:   Re: -current, IBM A30p & 2 external FW-disks
Message-ID:  <20030206120437.W683@nihil.reifenberger.com>
In-Reply-To: <20030205110746.T2445@nihil.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> <ybs3cn3v31i.wl@ett.sat.t.u-tokyo.ac.jp> <20030205110746.T2445@nihil.reifenberger.com>

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On Wed, 5 Feb 2003, Michael Reifenberger wrote:
...
> > I have improved recovery code after timeout in -current.
> > Could you try that?
>
> Is scheduled for this evening.
> Thanks so far!
>
...
> > > > - 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.

Ok, I did some extensive tests overnight.
Essentially I still had `fwcontorl -g 20` and
SBP_QUEUE_LEN=1 and maxopenings=1 and `debug.sbp_debug=1`.
hw.firewire.sbp.max_speed started at 0 and got 2 at the end.
After treating two `iozone -s 51200m -r1024k` on the platters
overnight without problems I started with a plain sbp.c and
no `fwcontorl -g 20`. I get constant rates of 13MB/s on each disk.
No problems so far.
Seems you got it. Thanks!

BTW: switching on debug.firewire_debug gives zillions of 'kick'...
Is this just a notification about the code-path?

Bye!
----
Michael Reifenberger
^.*Plaut.*$, IT, R/3 Basis, GPS

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