From: Kenneth Johansson <ken@canit.se>
To: Thunder from the hill <thunder@ngforever.de>
Cc: Matthias Andree <matthias.andree@stud.uni-dortmund.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Need help tracing regular write activity in 5 s interval
Date: 02 Jun 2002 18:12:08 +0200 [thread overview]
Message-ID: <1023034329.765.16.camel@tiger> (raw)
In-Reply-To: <Pine.LNX.4.44.0206020922410.29405-100000@hawkeye.luckynet.adm>
On Sun, 2002-06-02 at 17:25, Thunder from the hill wrote:
> Hi,
>
> > So: is there any trace software that can tell me "at 15:52:43.012345,
> > process 4321 marked 7 blocks dirty on device /dev/hda5" (or even more
> > detail so I can figure if it's just an atime update -- as with svscan --
> > or a write access)? And that is NOT to be attached to a specific process
> > (hint: strace is not an option).
>
> Problem: we'd have to do that using printk. printk issues another write
> call, which will mark things dirty. Issued is another printk, which marks
> things dirty and issues another printk...
>
> I suppose one write would become looped here?
Been there done that :)
I turned on debug output for jffs2 without changing klog/syslog to log
to a remote machine. Did not take long for the machine to get unusable.
next prev parent reply other threads:[~2002-06-02 16:12 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-02 15:25 Need help tracing regular write activity in 5 s interval Thunder from the hill
2002-06-02 15:41 ` Kevin Krieser
2002-06-02 16:12 ` Kenneth Johansson [this message]
2002-06-02 20:19 ` Matthias Andree
-- strict thread matches above, loose matches on Subject: below --
2002-06-02 13:55 Matthias Andree
2002-06-04 11:21 ` Padraig Brady
2002-06-04 11:41 ` Muli Ben-Yehuda
2002-06-04 11:43 ` Xavier Bestel
2002-06-04 12:04 ` Erik Andersen
2002-06-05 14:08 ` Padraig Brady
2002-06-05 15:13 ` Padraig Brady
2002-06-05 15:50 ` Owen Taylor
2002-06-05 16:43 ` Padraig Brady
2002-06-05 22:22 ` Padraig Brady
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