From mboxrd@z Thu Jan 1 00:00:00 1970 From: aragonx@dcsnow.com Subject: Re: How to boost performance Date: Fri, 18 Jun 2010 13:55:41 -0400 Message-ID: References: <20100617100109.32a20ffa@natsu> <20100617221300.3e30afe0@natsu> <20100618020220.161c54b2@natsu> <20100617204327.GA21864@rap.rap.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Return-path: In-Reply-To: <20100617204327.GA21864@rap.rap.dk> Sender: linux-raid-owner@vger.kernel.org To: Keld Simonsen Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids > On Fri, Jun 18, 2010 at 02:02:20AM +0600, Roman Mamedov wrote: > actually raid5 sequential reads can be faster than n-1 times the slowest > disk, > as it may skip the parity blocks faster than it could read them. Not much, > probably. Hello all, So would I be correct in concluding that I am CPU bound at this point? My machine is busy creating the parity information so can not receive any faster. A CPU replacement is in order but I have one question in that direction. It appears that the md0 process is only using one core. Is this because it is a single file being written? Should it be using both? The main thrust of this question is which type of CPU upgrade will help my situation. I could go for a faster MHz or more cores. Actually, I can't go much faster on the MHz front. I think 3.4GHz is max and I'm at 3.0GHz. As always, thank you for all your advice. --- Will Y. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.