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From: Tim Deegan <tim@xen.org>
To: Ian Campbell <Ian.Campbell@citrix.com>
Cc: Shriram Rajagopalan <rshriram@cs.ubc.ca>,
	"Xen-devel@lists.xen.org" <Xen-devel@lists.xen.org>,
	Ian Jackson <Ian.Jackson@eu.citrix.com>,
	David Vrabel <david.vrabel@citrix.com>,
	Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: Domain Save Image Format proposal (draft B)
Date: Wed, 12 Feb 2014 16:41:36 +0100	[thread overview]
Message-ID: <20140212154136.GD91459@deinos.phlegethon.org> (raw)
In-Reply-To: <1392111040.26657.50.camel@kazak.uk.xensource.com>

At 09:30 +0000 on 11 Feb (1392107440), Ian Campbell wrote:
> > checksum     CRC-32 checksum of the record body (including any trailing
> >              padding), or 0x00000000 if the checksum field is invalid.
> 
> Which CRC-32 :-P

CRC32C please; it's got hardware acceleration in SSE4.2.  There are
also options like Adler which are supposed to be faster in normal
arithmetic (not sure if that's still the case if you include tricks
like using vector multiply to fold the payload).

Tim.

  parent reply	other threads:[~2014-02-12 15:41 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-10 17:20 Domain Save Image Format proposal (draft B) David Vrabel
2014-02-10 17:32 ` Andrew Cooper
2014-02-10 17:48 ` Frediano Ziglio
2014-02-10 20:00 ` Shriram Rajagopalan
2014-02-11  1:35   ` Andrew Cooper
2014-02-11  4:12     ` Shriram Rajagopalan
2014-02-11 10:58       ` Zoltan Kiss
2014-02-12 15:34       ` Tim Deegan
2014-02-11 11:58   ` David Vrabel
2014-02-11 16:13     ` Shriram Rajagopalan
2014-02-11  9:30 ` Ian Campbell
2014-02-11 11:40   ` David Vrabel
2014-02-11 12:09     ` Ian Campbell
2014-02-11 13:10       ` Jan Beulich
2014-02-11 13:12       ` Ian Campbell
2014-02-12 15:41   ` Tim Deegan [this message]
2014-02-11 10:06 ` Jan Beulich
2014-02-11 13:04   ` David Vrabel
2014-02-11 13:20     ` Jan Beulich
2014-02-11 16:45   ` Ian Jackson
2014-02-11 17:08     ` Shriram Rajagopalan
2014-02-11 17:15       ` Ian Campbell
2014-02-11 17:30         ` Ian Jackson
2014-02-11 17:31         ` Frediano Ziglio
2014-02-11 17:53           ` Ian Jackson
2014-02-11 17:59             ` Ian Campbell
2014-02-12  9:07               ` Frediano Ziglio
2014-02-12 11:27                 ` Frediano Ziglio
2014-02-12 11:34                   ` Ian Campbell
2014-02-11 16:38 ` Ian Jackson
2014-02-11 17:04   ` Andrew Cooper
2014-02-11 17:07     ` Ian Jackson
2014-02-11 16:49 ` Ian Jackson
2014-02-11 17:10   ` David Vrabel
2014-02-11 17:28     ` Ian Jackson
2014-02-12 16:36 ` Tim Deegan
2014-02-12 17:09   ` David Vrabel
2014-02-12 18:16     ` Frediano Ziglio

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