Hi,
Ivan Voras wrote:
On 23/01/2008, Stefan Lambrev <[EMAIL PROTECTED]> wrote:
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: [EMAIL PROTECTED]: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.
For once, it's something I expected :) I just hope it isn't one of
those cases where Kris absolutely cannot reproduce it and arrives at
numbers in favour of FreeBSD :)
(just joking here, absolutely no ill feelings involved).
It would be helpful if you post exact command line arguments from all cases.
hping is quite simple program - jsut:
cd /usr/ports/net/hping-devel && make install
Here are my goals, configuration and problems -
http://lists.freebsd.org/pipermail/freebsd-performance/2008-January/003071.html
For this test, where I benchmark freebsd and linux I just have 2 servers
connected with cable (no switch)
Host A (flooder) 10.3.3.1 and host B (target) 10.3.3.2
I run from host A : hping --flood -p 22 -S 10.3.3.2
and systat -ifstat on host B to see the traffic that is generated
(I do not want to run this monitoring on the flooder host as it will
effect his performance)
After few minutes running I change the kern.timecounter.hardware to next
available counter and move to next test.
On linux (kubuntu) you can change the counter by executing:
echo tsc > /sys/devices/system/clocksource/clocksource0/current_clocksource
and cat /sys/devices/system/clocksource/clocksource0/current_clocksource
is the alternative of sysctl kern.timecounter.choice
Also I understand that hping is probably written with linux in mind,
so is there something else, that is more bsd native and will let me
accomplish my goals? :)
I need small tool to flood the network and test my bridge firewall.
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
I'm not sure, but from what I understood of Robert Watson's
explanation in the big ZFS thread on -current, maybe increasing
kmem_size (exactly as for ZFS...) could help you with these buffers.
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--
Best Wishes,
Stefan Lambrev
ICQ# 24134177
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