[TIGGE #EEC-237791]: Memory problem with LDM Server at CMA

["Unidata IDD TIGGE Support" <support-idd-tigge@xxxxxxxxxxxxxxxx>]

MA Qiang,

> The LDM system crashed on Dec. 16, 2007 and Jan.7, 2008. The console displayed some message about swap was full and some processes such as mmfsd had been killed when crashed.

Can you find that error message and send it to me.

> The current output of 'free' is as follows:
> 
> # free
> total       used       free     shared    buffers     cached
> Mem:       8161208    8125968      35240          0     150564    2716312
> -/+ buffers/cache:    5259092    2902116
> Swap:      2097144        212    2096932
> 
> I have attached the ldmd.conf to this email.  Please check it.

The "ldmd.conf" file looks OK and explains why you have so many connections.

> There are 7 PC Servers(tgn00 to tgn06) in TIGGE platform at CMA. The tgn01 has 8GB memory, and LDM is installed on it. IBM CSM is installed on all the 7 servers. The tgn00 is the CSM Server. IBM GPFS is installed on tgn01 to tgn06.

Is the LDM product-queue on a disk that is local to tgn01?  Can
that disk be accessed from another computer via GPFS?

Is the swap-file for tgn01 on a local disk?  Can that disk be
accessed from another computer via GPFS?

I hope to send you another email soon.

> The output of 'netstat -pat | grep ldm' is as follows:
> 
> tgn01::/usr/local/ldm01/etc:
> # netstat -pat | grep ldm
> tcp        0      0 *:ldm                       *:*                         LISTEN      9896/rpc.ldmd
> tcp        0      0 10.0.96.20:ldm              tigge-ldm.ecmwf.int:47308   ESTABLISHED 23099/rpc.ldmd
> tcp        0      0 10.0.96.20:40305            depot.cmc.ec.gc.ca:ldm      ESTABLISHED 9924/rpc.ldmd
...

> The domain name of tgn01 is 'tigge-ldm.cma.gov.cn'. But for some reason, you can not log into this server, and I can execute some commands to collect relative  information as your instructions.
> 
> Thank you!
> 
> Best regards,
> MA Qiang
> 
> National Meteorological Information Center
> 2008-01-15

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: EEC-237791
Department: Support IDD TIGGE
Priority: Normal
Status: On Hold