SERVNSA parameter

Non swappable server areas

Summary

Default value

0

Parameter type

User

Where set

On User 0's parameter line

Related products

All

Introduced

Model 204 V7.4

Description

The SERVNSA parameter, along with the SERVNSSZ parameter, controls non-swappable server areas which are placed above the 2G bar.

Each server table to be allocate above the bar is controlled by a bit in SERVNSA; if the bit is on, the corresponding server table is allocated above the bar. The bits are:

Bit	Server table placed above the bar
X'02000000'	FTBL
X'00800000'	GTBL — requires version 7.5 or later of Model 204.
X'00004000'	NTBL — requires version 7.5 or later of Model 204.
X'00002000'	QTBL — requires version 7.5 or later of Model 204.

SERVNSSZ (server non-swappable size) is the amount of space in bytes required for the above-the-bar server tables per user. The total amount of storage allocated for non-swappable server areas equals SERVNSSZ rounded to 4 K and multiplied by NUSERS. When sizing SERVNSSZ, it should accomodate the largest non-swappable table sizes that might be needed.

The SERVNSA parameter is new in version 7.4 of Model 204.

For more information about server tables above the bar, see the Rocket Model 204 System Manager's Guide.