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Message-ID: <20120813194902.GG9117@lenny.home.zabbo.net> Date: Mon, 13 Aug 2012 12:49:02 -0700 From: Zach Brown <zab@...hat.com> To: "Theodore Ts'o" <tytso@....edu> Cc: Andreas Dilger <adilger@...ger.ca>, Zheng Liu <wenqing.lz@...bao.com>, Eric Sandeen <sandeen@...hat.com>, Zheng Liu <gnehzuil.liu@...il.com>, ext4 development <linux-ext4@...r.kernel.org> Subject: Re: [PATCH v2] ext4: dynamical adjust the length of zero-out chunk > The previously rule of thumb which I had used was that after doing a > random seek, the time needed to write 4k and 32k was pretty much in > the noise. But that was a number from several years ago. I suppose I > should do some quick experiments to see what is a good number these > days.... Indeed. fio to the rescue. I remember Christoph saying something about 64k somewhat recently? But, helpfully, I can't recall the details :). - z -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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