From: Reeted <reeted-9AbUPqfR1/2XDw4h08c5KA@public.gmane.org>
To: Christoph Lameter <cl-vYTEC60ixJUAvxtiuMwx3w@public.gmane.org>
Cc: "Atchley, Scott" <atchleyes-1Heg1YXhbW8@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: IPoIB performance
Date: Wed, 05 Sep 2012 19:52:43 +0200 [thread overview]
Message-ID: <5047916B.4070706@shiftmail.org> (raw)
In-Reply-To: <0000013997217ec3-f6e2593f-2ff8-408d-814e-0345582b31ca-000000-p/GC64/jrecnJqMo6gzdpkEOCMrvLtNR@public.gmane.org>
On 09/05/12 17:51, Christoph Lameter wrote:
> PCI-E on PCI 2.0 should give you up to about 2.3 Gbytes/sec with these
> nics. So there is like something that the network layer does to you that
> limits the bandwidth.
I think those are 8 lane PCI-e 2.0 so that would be 500MB/sec x 8 that's
4 GBytes/sec. Or you really mean there is almost 50% overhead?
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next prev parent reply other threads:[~2012-09-05 17:52 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-29 19:35 IPoIB performance Atchley, Scott
[not found] ` <FFD82983-4A73-4A52-B6BE-C63DA16A507C-1Heg1YXhbW8@public.gmane.org>
2012-09-05 15:51 ` Christoph Lameter
[not found] ` <0000013997217ec3-f6e2593f-2ff8-408d-814e-0345582b31ca-000000-p/GC64/jrecnJqMo6gzdpkEOCMrvLtNR@public.gmane.org>
2012-09-05 17:09 ` Atchley, Scott
[not found] ` <3F476926-8618-4233-A150-C5D487B55C68-1Heg1YXhbW8@public.gmane.org>
2012-09-05 18:20 ` Christoph Lameter
[not found] ` <0000013997a928ab-36ad5a02-3c82-4daf-8e8a-a86c65e92376-000000-p/GC64/jrecnJqMo6gzdpkEOCMrvLtNR@public.gmane.org>
2012-09-05 18:30 ` Atchley, Scott
[not found] ` <78D8717C-0505-408B-8625-A9124AB33C9E-1Heg1YXhbW8@public.gmane.org>
2012-09-05 19:06 ` Christoph Lameter
[not found] ` <0000013997d35848-57319f33-839b-4480-a075-53b36f67bfe2-000000-p/GC64/jrecnJqMo6gzdpkEOCMrvLtNR@public.gmane.org>
2012-09-05 19:48 ` Atchley, Scott
[not found] ` <E88DEA9F-416B-4663-A292-5780DFF9B641-1Heg1YXhbW8@public.gmane.org>
2012-09-05 19:53 ` Christoph Lameter
2012-09-05 20:12 ` Ezra Kissel
[not found] ` <5047B23C.6080604-GZvvpLG7cYSVc3sceRu5cw@public.gmane.org>
2012-09-05 20:32 ` Atchley, Scott
2012-09-05 19:13 ` Christoph Lameter
[not found] ` <0000013997da4014-44dda0e8-01f3-48b8-b0cd-fe41164d590c-000000-p/GC64/jrecnJqMo6gzdpkEOCMrvLtNR@public.gmane.org>
2012-09-05 19:52 ` Atchley, Scott
[not found] ` <F90894CF-B55C-4AF7-845C-279FDF44351E-1Heg1YXhbW8@public.gmane.org>
2012-09-05 20:26 ` Christoph Lameter
2012-09-05 17:52 ` Reeted [this message]
2012-09-05 17:50 ` Reeted
[not found] ` <504790D8.7010307-9AbUPqfR1/2XDw4h08c5KA@public.gmane.org>
2012-09-05 17:59 ` Atchley, Scott
[not found] ` <64A9A0CD-00E0-4455-A641-324FA9BB8BC2-1Heg1YXhbW8@public.gmane.org>
2012-09-05 19:04 ` Reeted
[not found] ` <5047A233.2040602-9AbUPqfR1/2XDw4h08c5KA@public.gmane.org>
2012-09-05 19:46 ` Atchley, Scott
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