From mboxrd@z Thu Jan 1 00:00:00 1970 From: seth vidal Subject: Re: reconstruction -- where is the upper bound? Date: 28 Oct 2003 14:58:34 -0500 Sender: linux-raid-owner@vger.kernel.org Message-ID: <1067371114.24429.42.camel@opus> References: Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: To: mjstumpf@pobox.com Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Tue, 2003-10-28 at 14:55, mjstumpf wrote: > I'm considering my options; currently I've got a server running on a > p2-400. What causes the upper bound--IO bandwidth or CPU speed--with > regard to reconstruction of an array (say, a failed drive)? > > I forget the numbers I usually see, because I do this a lot. But it seems > to me it has more to do with IO bandwidth than CPU horsepower. I've done > this with both SCSI and ATA, but currently I'm referring to an ATA system. > > True? > > Is there anything I can do to speed this up cd /proc/sys/dev/raid/ cat speed_limit_max echo numberinKB/s > speed_limit_max -sv