From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] high precision timings
Date: Mon, 5 Sep 2011 00:48:41 -0400 [thread overview]
Message-ID: <ffb2605088de8c3a1a7ceb2fd31f2d91@ladd.quanstro.net> (raw)
In-Reply-To: <CAP6exYLkin_LGZCDCGYcSLqTNHZOfPWc6f=S0LLDG0q_WEhdZA@mail.gmail.c>
On Mon Sep 5 00:43:49 EDT 2011, rminnich@gmail.com wrote:
> The TSC has been badly abused by the chip makers over the last ten
> years. It went through a period of time where it had poor accuracy. Be
> sure to look at your hardware and make sure it's a later chip which
> will give you reasonable TSC behavior.
my example code wires the proc to a mach to avoid extreme TSC problems
such as on some ht p4 machines.
perhaps that's a bit extreme. it's been a long time since i've used a machine
with a broken cycle counter. (last purchase: 2006.)
- erik
prev parent reply other threads:[~2011-09-05 4:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-04 17:47 Steve Simon
2011-09-04 18:34 ` erik quanstrom
2011-09-05 4:42 ` ron minnich
2011-09-05 4:50 ` s s
2011-09-05 4:53 ` s s
2011-09-05 6:27 ` dexen deVries
[not found] ` <CAP6exYLkin_LGZCDCGYcSLqTNHZOfPWc6f=S0LLDG0q_WEhdZA@mail.gmail.c>
2011-09-05 4:48 ` erik quanstrom [this message]
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