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Tuning Memory Settings in NetWare 6

Novell Cool Solutions: Tip

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Posted: 28 Feb 2002

Here's a tip Net Ware or two that should help if you're working with NetWare 6 and want to tune its appetite for and/or allocation of memory.

Here's an example from one of our readers:
Whatever memory I put in my NetWare 6 server, I always have 35% free memory (even with 1GB, 2GBs or 4GBs of server memory installed). I'm running NetStorage, iFolder and iPrint. With this memory "issue", I'm not able to use ZENworks for Desktops or anything else.

I changed the NSS cachebalance from 60 percent to 10 percent, but I saw no change in memory usage.

Here are a few tips we wrestled out of those who know:
NetStorage and iFolder use Apache so you may want to look at the NVXADMUP.NCF file and perhaps modify it so that you restrict the memory used by Java using the following switches on the load java command line:


Where: 'aa' is the minimum memory limit and 'bb' is the maximum memory limit.

For example: -XMS96M -XMX192M sets Java to use a minimum memory allocation of 96MB and a maximum of 192MB.

Put these commands on the load line before any references are made to "com. ", etc.

You will also want to use NetWare Remote Manager to look at the memory being allocated in real-time. It could be a memory leak caused by a bad driver or something similar.

While you're in Remote Manager, click on "List Modules" -- this will tell you what is taking up the most RAM. NSS could be taking up a lot (and you can normally turn this down). By default, the JVM will only take up to 64 MB. Also, eDirectory could be taking up a lot of RAM.

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