From mboxrd@z Thu Jan 1 00:00:00 1970 From: dexen deVries Subject: Re: nilfs2 doesn't garbage collect checkpoints for me Date: Wed, 1 Jun 2011 19:34:30 +0200 Message-ID: <201106011934.30725.dexen.devries@gmail.com> References: <201106011003.24656.dexen.devries@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:from:to:subject:date:user-agent:references :in-reply-to:x-face:mime-version:content-type :content-transfer-encoding:message-id; bh=oapaTZiRZg6wRVMy2T5j5ds6YKGt+kxOBeNR14df96c=; b=Vg/OtT3c4iaNfKHPRliwWN52+ypM7UpEX3GsiAA7XEe1MQ9+hr+kF+NksCu0tE/k5W J7atB5fe1pVXsjPd6mZfBTuCMAHcJbwByJlCre+pqb+yPtpr0HDFsFV7Wfh6whkxSuhL hERHrT8leLz5vchF8HWG1z/sfg+1UboMelX0c= In-Reply-To: Sender: linux-nilfs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: Text/Plain; charset="us-ascii" To: linux-nilfs-u79uwXL29TY76Z2rM5mHXA@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.'' -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html