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From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Stefan Lambrev <stefan.lambrev@moneybookers.com>
References: <4795CC13.7080601@moneybookers.com> <868x2i3v8d.fsf@ds4.des.no>
	<864pd63v2h.fsf@ds4.des.no> <4795FE54.9090606@moneybookers.com>
Date: Tue, 22 Jan 2008 15:34:55 +0100
In-Reply-To: <4795FE54.9090606@moneybookers.com> (Stefan Lambrev's message of
	"Tue\, 22 Jan 2008 16\:31\:48 +0200")
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Cc: freebsd-hackers@FreeBSD.org
Subject: Re: gettimeofday() in hping
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Stefan Lambrev <stefan.lambrev@moneybookers.com> writes:
> I tested all different combination. The performance change is almost
> invisible (100-200KB/s), and can't be compared with the performance
> boost that TSC gain over ACPI-fast timecounter.  Unfortunately TSC
> doesn't play nice with power saving modes.

This will vary greatly from machine to machine, depending on the exact
hardware and the ACPI BIOS.

More modern machines have an HPET timer which is supposedly faster than
ACPI yet more reliable than TSC.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no