Date: 8 Jun 2014 22:18:20 -0400
Message-ID: <20140609021820.2038.qmail@ns.horizon.com>
From: "George Spelvin" <linux@horizon.com>
To: linux@horizon.com, tytso@mit.edu
Subject: Re: [RFC PATCH] drivers/char/random.c: Is reducing locking range like this safe?
Cc: hpa@linux.intel.com, linux-kernel@vger.kernel.org, mingo@kernel.org,
        price@mit.edu
In-Reply-To: <20140609021054.1614.qmail@ns.horizon.com>
Sender: linux-kernel-owner@vger.kernel.org

> Summarizing that, time to feed in 32 MiB of zeros (from user-space):
> 
> 0 concurrent reads:  0.356898 0.357693
> 1 concurrent read:   0.505941 0.509075	(+42%)
> 2 concurrent reads:  0.662240 0.657055	(+84%)

Er, wait a minute... I'm not sure which kernel (patched or unpatched)
I did that measurement on.

That may be a completely useless number.  I need to compile some more
kernels and reboot a few more times.  Sorry about that.
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