linux-kernel - Re: [GIT PULL] Update LZO compression

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 16 Aug 2012 18:20:52 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Jeff Garzik <jgarzik@...ox.com>
Cc:	"Markus F.X.J. Oberhumer" <markus@...rhumer.com>,
	Johannes Stezenbach <js@...21.net>,
	linux-kernel@...r.kernel.org, Andi Kleen <andi@...stfloor.org>,
	chris.mason@...ionio.com, linux-btrfs@...r.kernel.org,
	Nitin Gupta <ngupta@...are.org>,
	Richard Purdie <rpurdie@...nedhand.com>,
	richard -rw- weinberger <richard.weinberger@...il.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [GIT PULL] Update LZO compression

> If you think a little bit, I bet you could come up with a solution that 
> operates at cacheline-aligned granularity, something that would be _even 
> faster_ than simply fixing the code to do aligned accesses.

Cache aligned compression is unlikely to compress anything at all.
Compression algorithms are usually by definition unaligned.

-Andi
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/