linux-kernel - Re: [PATCH v2 3/3] hw_random: increase schedule timeout in rng_dev

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 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:	Tue, 16 Sep 2014 17:01:16 +0200
From:	Michael Büsch <m@...s.ch>
To:	Amos Kong <akong@...hat.com>
Cc:	virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
	herbert@...dor.apana.org.au, mpm@...enic.com,
	rusty@...tcorp.com.au, amit.shah@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] hw_random: increase schedule timeout in
 rng_dev_read()

On Tue, 16 Sep 2014 08:27:40 +0800
Amos Kong <akong@...hat.com> wrote:

> Set timeout to 10:
>   non-smp guest with quick backend (1.2M/s) -> about 490K/s)

That sounds like an awful lot. This is a 60% loss in throughput.
I don't think we can live with that.

-- 
Michael

Download attachment "signature.asc" of type "application/pgp-signature" (820 bytes)