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Date:      Tue, 22 Jan 2008 22:30:24 +0200
From:      Stefan Lambrev <stefan.lambrev@moneybookers.com>
To:        Kris Kennaway <kris@FreeBSD.org>
Cc:        freebsd-hackers@freebsd.org, Ivan Voras <ivoras@freebsd.org>
Subject:   Re: gettimeofday() in hping
Message-ID:  <47965260.7010707@moneybookers.com>
In-Reply-To: <479647FB.3070909@FreeBSD.org>
References:  <4795CC13.7080601@moneybookers.com>	<868x2i3v8d.fsf@ds4.des.no>	<864pd63v2h.fsf@ds4.des.no>	<4795FE54.9090606@moneybookers.com>	<86lk6i0vzk.fsf@ds4.des.no>	<479605E2.6070709@moneybookers.com>	<fn5c7u$i7e$2@ger.gmane.org> <47964356.6030602@moneybookers.com> <479647FB.3070909@FreeBSD.org>

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Kris Kennaway wrote:
> Stefan Lambrev wrote:
>
>>> How much can Linux handle?
>> Will install ubuntu on the same machine and let you know, but my 
>> experience shows that FreeBSD + TSC
>> have the same performance as Linux
>
> With which timecounter?
I guess the default as it is not set anywhere (in linux it can be 
changed only during boot time i think)
Do you have idea how can I see the current timecounter on linux ? :)

This is what I found in dmesg:

time.c: Using 3.579545 MHz PM timer.
Calibrating delay using timer specific routine.. 4416.34 BogoMIPS 
(lpj=2208170)
Calibrating delay using timer specific routine.. 4409.37 BogoMIPS 
(lpj=2204688)
Using local APIC timer interrupts.
Detected 12.528 MHz APIC timer.
Disabling vsyscall due to use of PM timer

I guess this means that ACPI timer or PM Timer is used? :)
>
>> Here are the max speeds I can reach with different counters (on the 
>> test server):
>>
>> i8254 - 3.660 MB/s
>> ACPI-fast - 7.137 MB/s
>> TSC - 12.519 MB/s
>> dummy - 12.366 MB/s
>
> Kris
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-- 

Best Wishes,
Stefan Lambrev
ICQ# 24134177




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