UNIX/Linux: X11 connection rejected because of wrong authentication

 % ssh -X -l userid remotehost

remotehost% /usr/openwin/bin/xclock
X11 connection rejected because of wrong authentication.
X connection to localhost:10.0 broken (explicit kill or server shutdown).

If you encounter X11 connection rejected because of wrong authentication error after logging to an UNIX/Linux host through ssh with X11 forwarding option, -X, check your /etc/inet/hosts file for multiple localhost entries; and remove the unnecessary ones.

For example, my /etc/inet/hosts has the following entries when the xclock failed with an X11 connection rejected .. error.

remotehost% cat /etc/inet/hosts

127.0.0.1       localhost       
::1     localhost       
10.2.211.150    sunfiret2000      loghost

Removing the 2nd line, ::1 localhost, fixed the issue.
_________________________
Technorati Tags:
UNIX | Linux | X11 | Troubleshooting

Read More

Kodak EasyShare M753/M853: Low Quality Grainy Pictures?

If the image size is around 500 KB even at 7 or 8 MP; and if the resulting image looks grainy, try this to improve the quality of the picture:

Turn off the Auto mode. Change it to manual mode and select ISO 80 or ISO 100. If there is no improvement in the quality of the picture, try the other ISO options 200, 400, 800 or 1250. Note that larger values doesn't necessarily produce cleaner, sharper images.

_____________
Technorati Tags:
Kodak | EasyShare | Digital Camera

Read More

Twiki Tip: Viewing Meta Data in Page Source

Ridiculously short tip this time.

It would be very frustrating if the meta tags {like %META:FORM%} in a twiki page won't show up even the URL was appended by "?raw=on". The trick to show the meta data as well as the topic data is to append "?raw=debug to the twiki URL.

I'm still looking for a way to edit the meta data though.
___________
Technorati Tags:
Twiki | Tip

Read More

Sun publishes 10,000 user Siebel 8.0 PSPP benchmark on Niagara 2 systems

Here is the link to the benchmark white paper publication:

Siebel CRM Release 8.0 Industry Applications and Oracle 10gR2 DB on Sun SPARC Enterprise T5120/T5220 servers running the Solaris 10 OS

Some key highlights from the white paper:

• All tiers of the Siebel CRM Release 8.0 architecture ran on chip multithreading (CMT) processor, UltraSPARC T2 based T5120/T5220 systems running Solaris 10 8/07.



• Multithreading capability of the US T2 processor allowed each of the active Object Manager (OM) processes to run hundreds of Light Weight Processes (LWP), thus utilizing the available resources very effectively. A total number of 30 object managers serviced the work load of 10,000 concurrent users.



• While supporting 10,000 concurrent Siebel users, the entire Sun Solution based on Sun SPARC Enterprise T5120/T5220 servers running Siebel CRM Release 8.0 and Oracle 10g R2 on top of Solaris 10 consumed 1202 watts in a 6U rack space. As a result the T5210/T5220 supports 8.3 users per watt of energy consumed and supports 1666 users per rack unit.



• Apparently this is the best Siebel 8.0 benchmark result out there in terms of the number of users and price/performance. Feel free to compare Sun's 10,000 user result with other published results that you may find at Oracle Siebel Benchmark White Papers web page.

_________________________
Technorati Tags:
Sun | Solaris | Siebel | Oracle | CRM | Benchmark | UltraSPARC T2

Read More