[Antelope] Antelope - Linux / Solaris

[Anton Danet]

Hi Majid,

We are running Antelope 4.10 on SuSE Linux 9.3. 
Our platform is a HP Proliant DL 380 G4 computer with 4GB RAM,
and we used to have a 1GB sized Antelope ORB.

Antelope works fine, but because on some (very) rare occasions it missed an 
event, I  started recording all /pf/ packets in ORB.

I noticed that some ORB packets are duplicated or they are delayed,
and the rate of occurrence of such situations reduces  when the ORB is 
smaller.

Danny suggested that it might be a memory management problem in Linux, and we
should try to run Antelope on Solaris.
So I installed a couple of months ago Antelope 10 on a Solaris 10/SPARC
Ultra 45 platform  with 4GB RAM and a 1GB ORB. 

The ORBs are fed with identical data.

After 60 monitoring days and about 400 /pf/   packets recorded, here is the 
outcome:

SuSE 9.3   &  300MB ORB:    8 time out_of_order packets
SuSE 9.3   &  100MB ORB:    4 time out_of_order packets
Solaris 10  &      1GB ORB:     no time out_of_order packets 

For the 300MB ORB there are also  8  error  messages 
 'Can't connect to server localhost:port'  in orb2dbt,  orbassoc,  orbtrigger    
log  files.

No such messages were recorded for the 100MB and 1GB ORBs.

I monitored also the free memory (on SuSE) and I observed that
sometimes it went very low (20MB or even lower).
 
It seems that Danny was right, our SuSE has a memory management problem.

I wonder if other Antelope Linux users ever had this kind of problems.

Best regards,
Anton

Anton Danet

National Institute for Earth Physics
Bucharest - Romania

Dear all:

We are using antelope installed in sun (Solaris 10) and we plan to acquire 
Linux  so that we get a powerful server with a large storage (central 
database) and open different terminal in it for several users who can analyze 
and review the data simultaneously. Now my questions are: 

1)      Do we need to get additional antelope license for the server only or 
for each terminal? 

2)      And what is your advice to get reliable and cost wise solution in such 
situation?

3)      Is there any special system requirements to get Linux based antelope? 

Looking forward to see your answers

 

Kind regards

 

Majid Al Saifi

Earthquake monitoring center

Sultan Qaboos University

Oman