From owner-freebsd-hackers@FreeBSD.ORG  Wed Jan 23 14:53:17 2008
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From: Stefan Lambrev <stefan.lambrev@moneybookers.com>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: gettimeofday() in hping
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Greets,

Now I have final results with Linux and FreeBSD on the same hardware
CPU: Intel(R) Xeon(R) CPU 3070  @ 2.66GHz - dual core
Lan: em0@pci0:3:0:0: class=0x020000 card=0x10bc8086 chip=0x10bc8086 
rev=0x06 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82571EB Gigabit Ethernet Controller (Copper)'
    class      = network
    subclass   = ethernet

FreeBSD releng_7_0 from today - amd64, sched_ule.

ACPI-Fast - 6.187 MB/s
TSC - 9.455 MB/s
dummy - 9.577 MB/s

Linux rambo2 2.6.22-14-generic #1 SMP Tue Dec 18 05:28:27 UTC 2007 
x86_64 GNU/Linux - kubuntu

TSC - 19.456 MB/s
acpi_pm - 15.394 MB/s
jiffies - 19.480 MB/s

This is really not what I expected.

The other thing that bothers me is, that under freebsd is quite easy to get:
[send_ip] sendto: No buffer space available
It happens almost always on my laptop just few seconds after I start 
hping with timecounter=TSC
and it is harder to reproduce with ACPI-fast and HPET.

-- 

Best Wishes,
Stefan Lambrev
ICQ# 24134177