I am facing an issue of large offset coming from my GPS clock.
I am syncing RHEL 6.3 server by GPS clock through ntpd service. I have too servers of same type and both are syncing independently to the GPS Clock.

>ntpstat of server 1 gives,

Code:

Synchronised to unspecified at stratum 15
time correct to within 145 ms.

>ntpstat of server 2 gives,

Code:

Unsynchronised
polling server every 16 s

>ntpq -p of server 1 gives

Code:

Reach                Delay             offset                 Jitter
377                    2.644             14654.6            2060.24

>ntpq -p of server 2 gives,

Code:

Reach                Delay             offset                 Jitter
377                    2.424             9732.48            3131.24

Ping -c 25 server1 gives,

Code:

25 packets transmitted, 25 received, 0% loss, time 24026 ms
rtt min/avg/max/mdev = 1.356/1.860/2.530/0.325 ms

Ping -c 25 server2 gives,

Code:

25 packets transmitted, 25 received, 0% loss, time 24002 ms
rtt min/avg/max/mdev = 1.428/1.969/2.525/0.325 ms

Checked and found that ntp.conf file for identical for both the server.

Drift for server 1 is,

Code:

428.51

Drift for server 2 is,

Code:

456.592

After 15 mins when i check the same parameter, I found the following.
>ntpq -p of server 1 gives

Code:

Reach                Delay             offset                 Jitter
377                    2.917            30381.8              3489.88

>ntpq -p of server 2 gives,

Code:

Reach                Delay             offset                 Jitter
377                    2.729             28423.7            1746.90

>ntpstat of server 1 gives,

Code:

Synchronised to unspecified at stratum 15
time correct to within 165 ms.

>ntpstat of server 2 gives,

Code:

Unsynchronised
polling server every 16 s

I also found that there is a difference of 50 seconds between Linux system clock and GPS time in server 1 and 2.
I have run ntpdate -d (GPS Clock IP) and stop the NTPD service.
Run,
>hwclock -S in RHEL system and restarted NTPD service hoping that it will decrease the time between source and synch and NTPD will be able to adjust the time now.But unfortunately offset and jitter in increasing and RHEL servers' time lag increases w.r.t time.

I am finding difficult to understand the above happenings.Can somebody suggest how to troubleshoot the issue?

Moderator's Comments:

As you have been told at least five times before, CODE tags are required by forum rules when displaying sample input, sample output, and code segments. Using CODE tags is not hard and makes it possible for readers of your posts to distinguish between <tab>s and <space>s and is needed to keep multiple adjacent whitespace characters to be coalesced into a single <space>. Your refusal to properly format your posts has resulted in your account being set to read only mode for a day. Continued refusal to properly format your posts may result in your account being banned permanently. Use Code Tags when you post any code or data samples so others can easily read your code. You can easily do this by highlighting your code and then clicking on the CODE tag in the editing menu. (You can also type code tags [code] and [/code] by hand.) Avoid adding color or different fonts and font size to your posts. Selective use of color to highlight a single word or phrase can be useful at times, but using color, in general, makes the forums harder to read, especially bright colors like red. Third, be careful when you cut-and-paste, edit any odd characters and make sure all links are working property.