<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">My apologies for top posting, answering from blackberry. <br/><br/>You're right about the actual numbers but I imagine when more spindles are involved, percentages will stay about the same.<p> <br/>Best Regards,<br/><br/>Artur<br/>eBoundHost<br/>http://www.eboundhost.com</p><p><hr size=2 width=100% align=center tabindex=-1><b>From</b>: Trent Lloyd <lathiat@bur.st><br><b>Date</b>: Thu, 25 Sep 2008 09:10:55 +0800<br><b>To</b>: <eBoundHost@em.eboundhost.comArturartureboundhost.com><br><b>CC</b>: <drbd-user@lists.linbit.com><br><b>Subject</b>: Re: [DRBD-user] Writes are much too slow<br></font></p>Hi Artur,<div><br><div><div>On 25/09/2008, at 8:05 AM, eBoundHost: Artur wrote:</div><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="font-family: 'Times New Roman'; font-size: 10pt; color: rgb(0, 0, 0); "><lathiat@bur.st><div>I don't know if it's silly, seems to be the faster the better! Once I have a better handle on this, we're going to be binding 3 or 4 interfaces to remove a bottleneck. Who knows, a rack full of hard drives may be just the thing for Dolphin. I think this is very cool and necessary to take DRBD to the enterprise.<br><br>To get back to what you're saying about the latency but take a look at this:<span class="Apple-converted-space"> </span><br><a href="http://lists.linbit.com/pipermail/drbd-user/2007-December/008128.html">http://lists.linbit.com/pipermail/drbd-user/2007-December/008128.html</a><br><br>To my understanding we should be lagging by some percentage, but not by such a margin.<br><br></div></lathiat@bur.st></div></span></blockquote><div><br></div><div>In the email you posted they went from 13M/s to 4M/s so theyre seeing a large drop.. in fact by a larger factor than you were.</div><div><br></div><div>Clearly your I/O subsystem is slower (in spins.. spindles.. not in raw throughput) than theirs because their raw speed is 13M vs 4M so thats where the difference in their numbers is I guess.</div><div><br></div><div>I"m sure others may have some useful information on getting your latency down, thats not my area of expertise.</div><div><br></div><div>Regards,</div><div>-- </div></div><div apple-content-edited="true"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><div><div>Trent Lloyd</div></div></div></div></div></span> </div><br></div></body></html>