From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: Re: Infiniband 40GB Date: Mon, 04 Jun 2012 10:02:10 +0200 Message-ID: <4FCC6B82.9080609@suse.de> References: <4FCB1C0A.4050504@profihost.ag> <4FCB5EED.30909@inktank.com> <4FCC5431.6070002@suse.de> <4FCC6328.3020606@profihost.ag> <4FCC6644.8010106@suse.de> <4FCC6963.7090202@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from cantor2.suse.de ([195.135.220.15]:51113 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751398Ab2FDICL (ORCPT ); Mon, 4 Jun 2012 04:02:11 -0400 In-Reply-To: <4FCC6963.7090202@profihost.ag> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Stefan Priebe - Profihost AG Cc: Mark Nelson , "ceph-devel@vger.kernel.org" On 06/04/2012 09:53 AM, Stefan Priebe - Profihost AG wrote: > Am 04.06.2012 09:39, schrieb Hannes Reinecke: >> On 06/04/2012 09:26 AM, Stefan Priebe - Profihost AG wrote: >>> Am 04.06.2012 08:22, schrieb Hannes Reinecke: >>>> Hehe. >>>> Good luck with that. >>>> >>>> We've tried on 10GigE with _disastrous_ results. >>>> Up to the point where 1GigE was actually _faster_. >>> >>> So you mean you've tried 10GBE or 10GB ipoib with Infiniband? >=20 > Could you please answer this question too? Thx. >=20 This was plain 10GigE, ie TCP/IP. Not infiniband, I'm afraid. However, given that our problems have not been related to the actual transport I'd be very much surprised if they would not occur on Infiniband. And I would _definitely_ like to hear if someone managed to get any decent speed (notably write speed) on fast interconnects. There's always a chance we've messed things up and were just measuring our crap setup ... Cheers, Hannes --=20 Dr. Hannes Reinecke zSeries & Storage hare@suse.de +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N=FCrnberg GF: J. Hawn, J. Guild, F. Imend=F6rffer, HRB 16746 (AG N=FCrnberg) -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html