linux-kernel - Re: (tsc) clock too slow on Core-i7/ASRock X58

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] [day] [month] [year] [list]

Message-ID: <AANLkTilwpzIMVYi5GtI6FTQC_pNTSBMIB3_PUAQTE6AY@mail.gmail.com>
Date:	Tue, 25 May 2010 12:59:52 -0700
From:	john stultz <johnstul@...ibm.com>
To:	宾西蒙 <binximeng@...il.com>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: (tsc) clock too slow on Core-i7/ASRock X58

On Mon, May 17, 2010 at 11:56 PM, 宾西蒙 <binximeng@...il.com> wrote:
> I have a problem with the system clock being off roughly 10 minutes a 2
> hours on a Xeon W3250 (like Core-i7 920) using the 2.6.34 Linux and tsc
> clocksource. Switching to hpet seems to improve the situation
> momentarily, however, are there any other thoughts on this matter?
>
> What I find odd is that the processor speed in dmesg (after TSC
> calibration message) is 2.8 GHz, whereas BIOS says @2.67GHz, might that
> be related?

So just to be clear, I assume the clock is ahead (fast) 10 minutes
every 2 hours, right?

Could you include or link to the full dmesg?

Did earlier kernels (prior to 2.6.34) work properly on this machine?

thanks
-john
--
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/