On 2012-09-14 21:44, Terje Mathisen wrote:
Ulf Samuelsson wrote:
On 2012-09-12 21:24, Richard B. Gilbert wrote:
On 9/12/2012 2:34 PM, unruh wrote:
On 2012-09-12, Ulf Samuelsson u...@invalid.com wrote:
Anyone knows if there are any available Linux based S/W to test the
throughput of NTP
Ulf Samuelsson wrote:
On 2012-09-14 21:44, Terje Mathisen wrote:
Do you really need that?
It seems to me that by modifying an ethernet card driver to do ntp
processing in kernel mode, you should be able to handle at least the
same number of ntp requests as you can do ping replies.
One of the
Part of the requirement, is that the dependencies on the underlying O/S
should be minimized. If an FPGA can handle everything, then this is
ideal.
Currently the FPGA will split incoming packets into streams with one
stream per thread.
Why can't your FPGA do the entire NTP processing, for all
Ulf Samuelsson wrote:
Instead the ntp code adds a delay to the incoming packet timestamp,
and the FPGA H/W sends out the packet at the correct time.
OK, this still means that the host CPU must be involved in every packet.
Yes, in the current implementation.
Line speed is 10M+
Rick Jones wrote:
Terje Mathisen terje.mathisen at tmsw.no wrote:
You're talking 10 GiGE wire speed, right?
That's more than 100 M requests/second!
If I recall correctly, the maximum number of minimim sized frames per
second for 10GbE is something like 14.7M or 14.8M each way. I think
On 2012-09-12 20:34, unruh wrote:
On 2012-09-12, Ulf Samuelsson u...@invalid.com wrote:
Anyone knows if there are any available Linux based S/W to test the
throughput of NTP servers?
I.E:
packets per second?
% of lost packets
etc?
Best Regards
Ulf Samuelsson
I hope
On 2012-09-12 21:24, Richard B. Gilbert wrote:
On 9/12/2012 2:34 PM, unruh wrote:
On 2012-09-12, Ulf Samuelsson u...@invalid.com wrote:
Anyone knows if there are any available Linux based S/W to test the
throughput of NTP servers?
I.E:
packets per second?
% of lost packets
etc?
On 9/14/2012 11:44 AM, Ulf Samuelsson wrote:
I am part of a small team that is evaluating how to
replace some existing stratum 1 servers...
On 9/14/2012 11:57 AM, Ulf Samuelsson wrote:
The NTP server we will be testing will be connected
to a Cesium clock providing a 1pps pulse...
I want to
BlackLists wrote:
Ulf Samuelsson wrote:
I am part of a small team that is evaluating how to
replace some existing stratum 1 servers...
The NTP server we will be testing will be connected
to a Cesium clock providing a 1pps pulse...
I want to check if this system can handle DDoS attacks,
Ulf Samuelsson wrote:
On 2012-09-12 21:24, Richard B. Gilbert wrote:
On 9/12/2012 2:34 PM, unruh wrote:
On 2012-09-12, Ulf Samuelsson u...@invalid.com wrote:
Anyone knows if there are any available Linux based S/W to test the
throughput of NTP servers?
I.E:
packets per second?
% of
Ulf,
Please contact me from a working email address.
Sorry to bother everybody else.
--
Harlan Stenn st...@ntp.org
http://networktimefoundation.org - be a member!
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Terje Mathisen terje.mathisen at tmsw.no wrote:
You're talking 10 GiGE wire speed, right?
That's more than 100 M requests/second!
If I recall correctly, the maximum number of minimim sized frames per
second for 10GbE is something like 14.7M or 14.8M each way. I think
Luigi Rizzo has gotten
On Wed, Sep 12, 2012 at 02:28:24PM +0200, Ulf Samuelsson wrote:
Anyone knows if there are any available Linux based S/W to test the
throughput of NTP servers?
I.E:
packets per second?
% of lost packets
etc?
I've used tcpdump and tcpreplay to measure the maximum packet
Anyone knows if there are any available Linux based S/W to test the
throughput of NTP servers?
I.E:
packets per second?
% of lost packets
etc?
Best Regards
Ulf Samuelsson
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On Sep 12, 2012, at 5:28 AM, Ulf Samuelsson wrote:
Anyone knows if there are any available Linux based S/W to test the
throughput of NTP servers?
I.E:
packets per second?
% of lost packets
etc?
To _measure_ those things, I'd probably use tcpdump, possibly plus some of
On 2012-09-12, Ulf Samuelsson u...@invalid.com wrote:
Anyone knows if there are any available Linux based S/W to test the
throughput of NTP servers?
I.E:
packets per second?
% of lost packets
etc?
Best Regards
Ulf Samuelsson
I hope not. I can just see someone deciding
unruh wrote: Ulf Samuelsson wrote:
Anyone knows if there are any available Linux based
S/W to test the throughput of NTP servers? I.E:
packets per second?
% of lost packets
etc?
I hope not. I can just see someone deciding to test one
of the stratum 1 main servers (eg at
On 9/12/2012 2:34 PM, unruh wrote:
On 2012-09-12, Ulf Samuelsson u...@invalid.com wrote:
Anyone knows if there are any available Linux based S/W to test the
throughput of NTP servers?
I.E:
packets per second?
% of lost packets
etc?
Best Regards
Ulf Samuelsson
I hope
On 2012-09-12, Richard B. Gilbert rgilber...@comcast.net wrote:
On 9/12/2012 2:34 PM, unruh wrote:
On 2012-09-12, Ulf Samuelsson u...@invalid.com wrote:
Anyone knows if there are any available Linux based S/W to test the
throughput of NTP servers?
I.E:
packets per second?
% of lost
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