Compaq AlphaServer GS60E Bedienungsanleitung PDF herunterladen (Seite 5)

AlphaServer GS60E Release Notes 3

Operating System Related

1. The size for swap space and dump files needs to be evaluated in large memory

configurations.

Tru64 UNIX

With large memory configurations, system administrators need to consider the probability of

system crashes, average workloads, and the size of physical memory when setting the swap

disk partition sizes. Before running in production mode, please review Section 6.1.2 of the

UNIX System Administration manual, Adding Swap Space, and Section 3.8.1 of the UNIX

Installation Guide.

In summary, swap size is a function of system administration goals, physical memory size,

and workload. Things to consider when setting swap size:

• Full dumps require swap to be the same size as physical memory plus a suggested 2

Mbytes.

• Partial dumps are a function of system tuning parameters plus a suggested 2 Mbytes.

• Swap will occur on a small memory configuration, and ample swap sizes should be

considered.

• In deferred swap allocation mode, the more physical memory you have the less swap

space you will need.

In some systems dump usage will require more swap space than virtual memory usage. In

others, the reverse will be true. Thus, both must be estimated and the larger size used when

configuring swap space.

OpenVMS

The recommended method for the creation and sizing of dump files on OpenVMS systems is

to use AUTOGEN.COM. This is run automatically during installation of OpenVMS and can

be run at any other time at the system manager’s discretion.

For details, see Section 15.15 of the OpenVMS V7.1 System Manager’s Manual: Tuning,

Monitoring, and Complex Systems, entitled “Creating and Modifying Page, Swap, and Dump

Files.”

2. DECevent may not be able to process certain error log files that are too large. For

OpenVMS, this issue occurs with files larger than 10 Kbytes. On Tru64 UNIX, this issue

occurs on smaller files.

Avoid large error log files by monitoring the file size and creating a new one if it gets too

big. However, if necessary the following commands can be used to process a large file:

VMS:

EREIVVFMREV]!JMPICREQIWMRGI!WXEVXCHEXICXMQIFIJSVI!IRHCHEXICXMQI

HMEJMPICREQI

UNIX:

YIVJF JMPICREQI"XW WXEVXCHEXICXMQI"I IRHCHEXICXMQI"

HMEJ JMPICREQI"

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Compaq AlphaServer GS60E Bedienungsanleitung Seite 5