are there any good sources for disabling interrupt coalescing?
On Mar 9, 2012, at 8:00 AM, "Rob" wrote:
> Terje Mathisen <"terje.mathisen at tmsw.no"> wrote:
>> The more I look at this, the more I settle down on using Ethernet as the
>> communication channel!
>
> Ethernet is not what it used
ntp.org
[mailto:questions-bounces+david.russell=dowjones@lists.ntp.org] On Behalf
Of unruh
Sent: Tuesday, May 11, 2010 10:59 AM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Is this normal?
On 2010-05-10, Russell, David wrote:
> --_004_C430DA47D51D0C4B940F6928BAE21F4626A3F15C2
estions-bounces+david.russell=dowjones@lists.ntp.org] On Behalf
Of David Woolley
Sent: Tuesday, May 11, 2010 5:08 PM
To: questions@lists.ntp.org
Subject: Re: [ntp:questions] Is this normal?
Russell, David wrote:
> I am trying to verify the correct implementation of NTP on a device
> that is con
I am trying to verify the correct implementation of NTP on a device that is
configured to poll a GPS based dedicated time server on the local area network.
The round trip times to this stratum 1 vary between 3.3 and 3.4ms.
I have plotted the offset vs drift in the included jpg. The drift rate
are any known
clunkers.
Thanks,
David Russell
David R. Russell
CCIE #5751
Dow Jones and Company
GTS - Performance Engineering Group
Office 609-520-4458
Cell 610-909-1129
david.russ...@dowjones.com<mailto:david.russ...@dowjones.com>
___
que
I have two sites that are about 1ms away from each other and each site has a
pair of GPS based NTP servers. I have configured a large number of Linux
servers with the NTP servers at each site.
The Linux servers prefer the NTP servers at the remote site instead of the ones
from local site. The
I have 15 HP Proliant DL 580s and 11 DL 360s all running Linux and NTP4.2.2.
They are configured to use the local stratum 1 servers. What I am noticing is
that:
the 580s have drift values between -31 and -91 while the 360s range between -8
and +7
The 580s have offsets between 0.3 and 6.5 (a
I don't have any comparisons between syncing to a Stratum 2 vs stratum 1. I am
very happy with a two level hierarchy - GPS based NTP appliances at stratum 1
and all the servers and network gear at stratum 2.
In my GE LAN environment, with 64sec polling the servers claim offsets in the
10us rang
I would not recommend using Cisco devices as NTP servers if the time is
important to you. There are bugs in the code that result in the offsets not
getting any better than a few ms. Using the prefer command works around one of
the problems but it still wanders around a lot.
I point all my net
ssive, it isn't because the algorithm is in
>error; it's because you really do have large differences in the server
>population.
>Dave
>Russell, David wrote:
>I am trying to validate an NTP implementation that is exhibiting a lot
>of churn in the clus
I am trying to validate an NTP implementation that is exhibiting a lot
of churn in the cluster algorithm. Unfortunately I don't think that I
been able to properly calculate the select dispersion based on RFC1305.
Can anyone refer me to a more detailed description of the calculations
or even bett
EMAIL PROTECTED]
Sent: Sunday, November 04, 2007 8:24 PM
To: Russell, David
Cc: questions@lists.ntp.org
Subject: Re: [ntp:questions] Standalone PC Clock Sync
Russell, David wrote:
> I have a PC running Windows that gets disconnected from the network
for
> up to an hour. I am using NTP to syn
I have a PC running Windows that gets disconnected from the network for
up to an hour. I am using NTP to sync the clock while it is connected
but when disconnected the clock drifts quite a bit. Does anyone have
any suggestions for how I can maintain the timing in this scenario?
Also, I hav
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