From mboxrd@z Thu Jan 1 00:00:00 1970 From: Janek Kozicki Subject: Re: RAID5 how chage chunck size from 64 to 128, 256 ? is it possible ? Date: Sat, 9 Feb 2008 23:31:59 +0100 Message-ID: <20080209233159.659ce16d@szpak> References: <1498963728.20080209074300@j8.com.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Justin Piszcz said: (by the date of Sat, 9 Feb 2008 04:14:51 -0500 (EST)) > When you reate the array its --chunk or -c -- I found 256 KiB to 1024 KiB > to be optimal. Hello Justin, what is your typical bonnie++ invocation, to test your configuration? Which fields are meaningful for you from this benchmark? Do you use anything else for benchmarks? eg: 'zcav /dev/sda > result' ? I'm asking becuase I want to make some local benchmarks to determine best chunk size in my HDD setup. thanks in advance -- Janek Kozicki |