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From: dexen deVries <dexen.devries-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: linux-nilfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: nilfs2 doesn't garbage collect checkpoints for me
Date: Wed, 1 Jun 2011 19:34:30 +0200	[thread overview]
Message-ID: <201106011934.30725.dexen.devries@gmail.com> (raw)
In-Reply-To: <BANLkTimhLPM3TU1uw10Ub5t-GEW_s-B_tQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

Hi Dima,


On Wednesday 01 June 2011 19:32:07 you wrote:
> I'm trying to analyze how different filesystems, settings and user
> mode settings interact with write amplification and write endurance on
> flash.
> 
> Thus I need to get details of every write that fs issues to the
> underlying block device.

Have you considered either of:


# iostat -d -k 1

http://linux.die.net/man/8/blktrace


-- 
dexen deVries

``One can't proceed from the informal to the formal by formal means.''
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  parent reply	other threads:[~2011-06-01 17:34 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-26 18:11 nilfs2 doesn't garbage collect checkpoints for me Dima Tisnek
     [not found] ` <BANLkTim4BBKwFJUzbnsKw0_Ru2k8ZW3MYw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-05-26 18:32   ` dexen deVries
     [not found]     ` <201105262032.54257.dexen.devries-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2011-05-26 20:24       ` Dima Tisnek
     [not found]         ` <BANLkTimNm6QcNOmc1Gwp2K+SVKoRV8+8Cg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-05-27  4:38           ` Ryusuke Konishi
     [not found]             ` <20110527.133803.215389018.ryusuke-sG5X7nlA6pw@public.gmane.org>
2011-05-31 22:08               ` Dima Tisnek
     [not found]                 ` <BANLkTinnpFyrxeO2_DF5gXLgas2WLdqw4Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-06-01  8:03                   ` dexen deVries
     [not found]                     ` <201106011003.24656.dexen.devries-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2011-06-01 17:32                       ` Dima Tisnek
     [not found]                         ` <BANLkTimhLPM3TU1uw10Ub5t-GEW_s-B_tQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-06-01 17:34                           ` dexen deVries [this message]
     [not found]                             ` <201106011934.30725.dexen.devries-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2011-06-01 18:21                               ` Dima Tisnek
     [not found]                                 ` <BANLkTinsZZeRDmQR8sAWrqUP1N4UK5ktAA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-06-01 19:19                                   ` dexen deVries

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