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From: Andrei Borzenkov <arvidjaar@gmail.com>
To: "Fuhrmann, Carsten" <carsten.fuhrmann@rwth-aachen.de>,
	Qu Wenruo <quwenruo.btrfs@gmx.com>,
	"linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Re: AW: Btrfs performance with small blocksize on SSD
Date: Sun, 24 Sep 2017 19:43:05 +0300	[thread overview]
Message-ID: <ffd3bf37-3029-9f6e-5d57-6d8cca74fdad@gmail.com> (raw)
In-Reply-To: <b9067303023a49158bae2cdc34393716@rwth-aachen.de>

24.09.2017 16:53, Fuhrmann, Carsten пишет:
> Hello,
> 
> 1)
> I used direct write (no page cache) but I didn't disable the Disk cache of the HDD/SSD itself. In all tests I wrote 1GB and looked for the runtime of that write process.

So "latency" on your diagram means total time to write 1GiB file? That
is highly unusual meaning for "latency" which normally means time to
perform single IO. If so, you should better rename Y-axis to something
like "total run time".

  parent reply	other threads:[~2017-09-24 16:43 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-24 13:24 Btrfs performance with small blocksize on SSD Fuhrmann, Carsten
2017-09-24 13:40 ` Qu Wenruo
2017-09-24 13:53   ` AW: " Fuhrmann, Carsten
2017-09-24 14:10     ` Qu Wenruo
2017-09-24 14:22       ` AW: " Fuhrmann, Carsten
2017-09-24 16:43     ` Andrei Borzenkov [this message]
2017-09-24 20:39       ` Kai Krakow
2017-09-25  7:04       ` AW: AW: " Fuhrmann, Carsten
2017-09-25  8:36         ` Kai Krakow
2017-09-26 20:33 ` Peter Grandi

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