Re: [gembud] Long delay in garp display of model file list

• To: "Neil Smith" <neils@xxxxxxxxxxxxxxxxxx>, <gembud@xxxxxxxxxxxxxxxx>
• Subject: Re: [gembud] Long delay in garp display of model file list
• From: "Jeff Lake - Admin" <admin@xxxxxxxxxxxxxxxxxxxx>
• Date: Tue, 9 Mar 2010 18:00:42 -0500

How much RAM?
Is LDM and GEMPAK on the same server??
if so that may be your problem...both are competing for memory

*
*                   Jeff Lake
*                   MichiganWxSystem.com
*                   WeatherMichigan.net
*
**********************************************************************

To: <gembud@xxxxxxxxxxxxxxxx>
Sent: Tuesday, March 09, 2010 5:17 PM
Subject: [gembud] Long delay in garp display of model file list

Has anyone seen this?

We have extremely long delays in garp displaying available times for a given model choice in the Model Plan View selection window. I've experimented with reducing the number of files in a model directory and that seems to reduce the wait time. But sometimes the wait is a minute or two, sometimes indefinitely. I thought maybe it was that there were no named fdf directories in comet/garp/fdf/scalar or vector so I copied some for them. eg., for a modelkey of eta218, I just copied the existing eta212 directory, renaming it to eta218. That seemed to work for a bit, but later it doesn't have any effect all.

The $GEMDATA is a 100 Mb network NFS mount from a FreeBSD 8.0 on a Dell PowerEdge 2950 and 1 TB SATA drive on a SAS controller. The LDM is LDM 6.8.1; GEMPAK is 5.11.4 (pre Feb. '10) on Mac OS X 10.5.

This delay is also observed if $GEMDATA is from an older host running FreeBSD 6.0 and 2 striped 300GB SCSI drives.

-Neil
---
Neil Smith         neils@xxxxxxxx
Comp. Sys. Mngr., Atmospheric Sciences






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• References:
  • [gembud] Long delay in garp display of model file list
    • From: Neil Smith