Mailinglist Archive: opensuse (2459 mails)

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[opensuse] optimize dd
  • From: "Otto Rodusek (AP-SGP)" <otto@xxxxxxxxxxxxxx>
  • Date: Wed, 19 Mar 2008 19:52:15 +0800
  • Message-id: <47E0FE6F.70209@xxxxxxxxxxxxxx>
Hi,

Is there an optimum 'bs' parameter to the dd command. For example if you want to clone 2 drives (dd if=/dev/hda of=/dev/hdb bs=??) is there a better value to bs that will finish the process faster? Will a larger value like bs=8257536 or a value like bs=32256 be better? Is it better to have a value that is a multiple of sectors (ie 63 sectors @ 512 bytes = 32256)? Thanks for any comments. Otto.
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