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>] [day] [month] [year] [list]
Message-ID: <e06186140710191145r4276e974s1218a6325b5a1f9f@mail.gmail.com>
Date:	Fri, 19 Oct 2007 12:45:36 -0600
From:	"Charles R Harris" <charlesr.harris@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i386: fix TSC clock source calibration error

On Tue, 2007-10-16 at 10:50 -0400, Dave Johnson wrote:
>
>  range of tsc_khz  # of boots  % of boots
> -----------------  ----------  ----------
>         < 1999750           0      0.000%
> 1999750 - 1999800          21      3.048%
> 1999800 - 1999850         166     24.128%
> 1999850 - 1999900         241     35.029%
> 1999900 - 1999950         211     30.669%
> 1999950 - 2000000          42      6.105%
> 2000000 - 2000000           0      0.000%
> 2000050 - 2000100           0      0.000%
>                    [...]
> 2000100 - 2015000           1      0.145%  << BAD
> 2015000 - 2030000           6      0.872%  << BAD
> 2030000 - 2045000           1      0.145%  << BAD
> 2045000 <                   0      0.000%
>
> The worst boot was 2032.577 Mhz, over 1.5% off!

This may be related to bug
https://bugzilla.redhat.com/show_bug.cgi?id=270321 at Redhat bugzilla.
It has been easily reproducible on my machine.

Chuck
-
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/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ