Sun Microsystems SPARCstation 20 System Configuration Guide

10 Platform Notes: SPARCstation 10SX and SPARCstation 20 System Configuration Guide • February 2000
This an be configured as:
■ 1 16 MByte DSIMM in slot 0
■ 1 16 MByte DSIMM in slot 7
■ 1 64 MByte DSIMM in slot 6
■ 1 64 MByte DSIMM in slot 5
■ 1 VSIMM in slot 4
or be configured as:
■ 1 16 MByte DSIMM in slot 0
■ 1 16 MByte DSIMM in slot 3
■ 1 64 MByte DSIMM in slot 2
■ 1 64 MByte DSIMM in slot 1
■ 1 VSIMM in slot 4 or 5
SXDRAM Configuration
The operating system includes a driver for reserving and managing physically
contiguous memory. The memory should be reserved as part of the boot process,
because it is likely to be the least fragmented at this time, and chances of finding
large blocks of physically contiguous memory are higher during boot time.
The amount of SXDRAM to reserve can be specified by using the sxconfig(1M)
command. sxconfig can be executed only by a process with superuser privileges.
Here are some examples of sxconfig command use.
To disable fragmentation, enter:
To restore all configuration parameters to the default values, enter:
By default, 0 MBytes of physically contiguous memory is reserved, fragmentation is
not allowed, and 32 MBytes of memory is reserved for system use.
To display the current configuration parameters in the driver configuration file,
enter:
# sxconfig -n
# sxconfig -d
# sxconfig -c

Sun Microsystems SPARCstation 20 Specifications

General

Brand	Sun Microsystems
Model	SPARCstation 20
Category	Desktop
Language	English