From: Daniel Phillips <phillips@phunq.net>
To: david@lang.hm
Cc: David Newall <davidn@davidnewall.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>, Willy Tarreau <w@1wt.eu>,
linux-kernel@vger.kernel.org
Subject: Re: [ANNOUNCE] Ramback: faster than a speeding bullet
Date: Mon, 31 Mar 2008 21:07:48 -0700 [thread overview]
Message-ID: <200803312107.48892.phillips@phunq.net> (raw)
In-Reply-To: <alpine.DEB.1.00.0803311727500.31200@asgard.lang.hm>
On Monday 31 March 2008 17:28, david@lang.hm wrote:
> On Mon, 31 Mar 2008, Daniel Phillips wrote:
>
> > On Tuesday 18 March 2008 09:36, david@lang.hm wrote:
> >> P.S. 8xPCI-e slots are only able to do 2GB/s of data transfer, in an
> >> earlier post Daniel claimed that you needed 3GB/s of disk to mirror to the
> >> disk, so the scenerio listed above looses 1/3 of it's performance compared
> >> to what was being claimed earlier.
> >
> > Each Violin 1010 has two 8xPCI-e interfaces.
>
> but if you use them for redundancy by hooking them to two machines you can
> only use one of them on your active system.
That is why you use two Violin 1010 boxes, each connected to two
servers. The resulting mirror will have roughly 1 GByte/sec write
bandwidth and 3 GByte/sec read bandwidth. Fast enough for you? No?
Well then...
Continue this idea to achieve whatever bandwidth you want to the ramdisk,
subject to finding server motherboards that can take lots of PCI-e 8x
cards, which are admittedly rare, but see "have your checkbook ready".
Regards,
Daniel
next prev parent reply other threads:[~2008-04-01 4:08 UTC|newest]
Thread overview: 153+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-10 6:46 [ANNOUNCE] Ramback: faster than a speeding bullet Daniel Phillips
2008-03-10 7:51 ` Grzegorz Kulewski
2008-03-10 8:23 ` Daniel Phillips
2008-03-10 9:37 ` Alan Cox
2008-03-10 21:03 ` Lars Marowsky-Bree
2008-03-11 11:14 ` Daniel Phillips
2008-03-11 11:23 ` Lars Marowsky-Bree
2008-03-11 11:50 ` Daniel Phillips
2008-03-11 17:26 ` Chris Friesen
2008-03-11 19:56 ` Daniel Phillips
2008-03-11 20:53 ` Willy Tarreau
2008-03-12 8:17 ` Daniel Phillips
2008-03-12 14:41 ` Mike Snitzer
2008-03-13 20:34 ` Rik van Riel
2008-03-14 2:20 ` Daniel Phillips
2008-03-11 21:56 ` Lars Marowsky-Bree
2008-03-11 23:02 ` Daniel Phillips
2008-03-12 13:25 ` Benny Amorsen
2008-03-12 13:30 ` Alan Cox
2008-03-13 15:29 ` Benny Amorsen
2008-03-14 9:30 ` Pavel Machek
2008-03-14 11:07 ` Ric Wheeler
2008-03-14 11:41 ` Benny Amorsen
2008-03-14 12:12 ` Ric Wheeler
2008-03-14 12:56 ` Theodore Tso
2008-03-14 15:47 ` Ric Wheeler
2008-03-14 16:49 ` Theodore Tso
2008-03-14 17:04 ` Ric Wheeler
2008-03-14 18:03 ` david
2008-03-14 19:03 ` writeback cache dangers " Pavel Machek
2008-03-14 19:29 ` Theodore Tso
2008-03-13 9:15 ` Matthias Schniedermeyer
2008-03-11 23:30 ` Daniel Phillips
2008-03-13 13:27 ` Ric Wheeler
2008-03-13 19:02 ` Daniel Phillips
2008-03-13 19:12 ` Ric Wheeler
2008-03-13 19:38 ` Daniel Phillips
2008-03-11 4:23 ` Daniel Phillips
2008-03-10 9:22 ` Alan Cox
2008-03-10 19:01 ` Rik van Riel
2008-03-11 4:28 ` Daniel Phillips
2008-03-11 3:50 ` Daniel Phillips
2008-03-11 13:32 ` Artur Skawina
2008-03-11 14:31 ` Artur Skawina
2008-03-12 13:11 ` Alan Cox
2008-03-12 17:29 ` Daniel Phillips
2008-03-12 18:11 ` Chris Friesen
2008-03-12 22:56 ` Daniel Phillips
2008-03-13 5:45 ` David Newall
2008-03-13 6:17 ` Daniel Phillips
2008-03-13 6:30 ` David Newall
2008-03-13 6:50 ` Daniel Phillips
2008-03-13 7:05 ` David Newall
2008-03-13 7:13 ` Daniel Phillips
2008-03-15 13:32 ` Pavel Machek
2008-03-15 20:22 ` Daniel Phillips
2008-03-15 21:33 ` Pavel Machek
2008-03-15 21:47 ` Daniel Phillips
2008-03-13 6:32 ` david
2008-03-13 7:12 ` Daniel Phillips
2008-03-13 7:55 ` david
2008-03-13 8:06 ` Daniel Phillips
2008-03-13 8:39 ` david
2008-03-13 9:16 ` Daniel Phillips
2008-03-13 16:25 ` david
2008-03-13 19:32 ` Daniel Phillips
2008-03-13 19:50 ` David Newall
2008-03-13 20:03 ` Daniel Phillips
2008-03-14 17:53 ` Jeff Moyer
2008-03-15 20:26 ` Pavel Machek
2008-03-15 20:40 ` Mike Snitzer
2008-03-15 21:05 ` Daniel Phillips
2008-03-15 20:18 ` Pavel Machek
2008-03-15 20:51 ` Daniel Phillips
2008-03-13 9:49 ` Daniel Phillips
2008-03-13 5:39 ` David Newall
2008-03-13 6:14 ` Daniel Phillips
2008-03-13 13:22 ` Alan Cox
2008-03-13 19:14 ` Daniel Phillips
2008-03-13 20:27 ` Rik van Riel
2008-03-14 2:23 ` Daniel Phillips
2008-03-14 5:22 ` David Newall
2008-03-14 5:42 ` Daniel Phillips
2008-03-14 14:00 ` John Stoffel
2008-03-15 20:59 ` Willy Tarreau
2008-03-15 20:56 ` Alan Cox
2008-03-15 21:25 ` Daniel Phillips
2008-03-15 21:08 ` Alan Cox
2008-03-15 21:51 ` Daniel Phillips
2008-03-15 21:17 ` Daniel Phillips
2008-03-15 21:03 ` Alan Cox
2008-03-15 22:00 ` Daniel Phillips
2008-03-15 23:05 ` Alan Cox
2008-03-16 21:57 ` Daniel Phillips
2008-03-16 21:55 ` Alan Cox
2008-03-16 22:36 ` Daniel Phillips
2008-03-16 22:46 ` Alan Cox
2008-03-16 23:39 ` Daniel Phillips
2008-03-17 11:53 ` Alan Cox
2008-03-17 1:31 ` David Newall
2008-03-17 2:42 ` Daniel Phillips
2008-03-17 3:59 ` david
2008-03-17 5:52 ` Daniel Phillips
2008-03-17 6:49 ` david
2008-03-17 8:16 ` Daniel Phillips
2008-03-17 10:39 ` Alan Cox
2008-03-17 13:52 ` Ric Wheeler
2008-03-17 14:42 ` david
2008-03-17 17:23 ` david
2008-03-17 17:30 ` Willy Tarreau
[not found] ` <200803180233.10156.phillips@phunq.net>
2008-03-18 13:03 ` David Newall
2008-03-18 16:36 ` david
2008-03-31 11:40 ` Daniel Phillips
2008-04-01 0:28 ` david
2008-04-01 4:07 ` Daniel Phillips [this message]
2008-04-01 4:23 ` david
2008-04-01 6:08 ` Daniel Phillips
2008-03-18 13:57 ` Alan Cox
2008-03-31 11:39 ` Daniel Phillips
2008-03-17 7:14 ` David Newall
2008-03-17 8:25 ` Daniel Phillips
2008-03-17 18:56 ` David Newall
2008-03-23 9:33 ` Pavel Machek
2008-03-23 20:44 ` Daniel Phillips
2008-03-15 21:54 ` Willy Tarreau
2008-03-15 22:33 ` Daniel Phillips
2008-03-15 23:22 ` david
2008-03-15 23:57 ` Krzysztof Halasa
2008-03-15 23:22 ` Willy Tarreau
2008-03-16 3:33 ` Daniel Phillips
2008-03-16 5:24 ` David Newall
2008-03-16 12:49 ` Ingo Oeser
2008-03-16 6:56 ` Willy Tarreau
2008-03-16 22:12 ` Krzysztof Halasa
2008-03-16 13:14 ` Alan Cox
2008-03-16 19:04 ` Theodore Tso
2008-03-16 22:02 ` Krzysztof Halasa
2008-03-15 23:18 ` Bernd Eckenfels
2008-03-16 5:42 ` David Newall
2008-03-16 20:48 ` Daniel Phillips
2008-03-16 22:15 ` Krzysztof Halasa
2008-03-16 22:38 ` Daniel Phillips
2008-03-16 23:08 ` Krzysztof Halasa
2008-03-16 23:43 ` Daniel Phillips
2008-03-10 14:51 ` Artur Skawina
2008-03-10 18:49 ` Chris Snook
2008-03-11 5:06 ` Greg KH
2008-03-11 5:22 ` Daniel Phillips
2008-03-11 5:48 ` david
2008-03-11 6:27 ` Greg KH
2008-03-12 12:01 ` tvrtko.ursulin
2008-03-12 17:27 ` Daniel Phillips
[not found] <OFA00954A4.45F32CA2-ON8025740B.005D7B40-8025740B.005EECA6@sophos.com>
2008-03-13 19:34 ` Daniel Phillips
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