SERVNSA parameter: Difference between revisions

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<var>[[SERVNSSZ parameter|SERVNSSZ]]</var> (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 <var>SERVNSSZ</var> rounded to 4 K and multiplied by <var>NUSERS</var>.
<var>[[SERVNSSZ parameter|SERVNSSZ]]</var> (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 <var>SERVNSSZ</var> rounded to 4 K and multiplied by <var>NUSERS</var>.
When sizing <var>SERVNSSZ</var>, it should accomodate the largest non-swappable table sizes that might be needed.
When sizing <var>SERVNSSZ</var>, it should accomodate the largest non-swappable table sizes that might be needed.
The maximum non-swappable setting for version 7.4 is x'02000000'.
The maximum non-swappable setting for version 7.4 is X'02000000'.
The maximum non-swappable setting for version 7.5 is x'02806000'.  
The maximum non-swappable setting for version 7.5 is X'02806000'.  
The maximum non-swappable setting for version 7.6 is x'1BDF6000'.
The maximum non-swappable setting for version 7.6 is X'1BDF6000'.


In Model 204 7.5 and later, QTBL and NTBL can alternatively be placed above-the-bar in a swappable area. This can be indicated with the [[SERVGA parameter|SERVGA]] and [[SERVGSZ parameter|SERVGSZ]] parameters. The bits corresponding to NTBL and QTBL should not be set in both SERVNSA and SERVGA &ndash; if they are, an error message will be issued and the online will fail to come up.   
In Model 204 7.5 and later, QTBL and NTBL can alternatively be placed above-the-bar in a swappable area. This can be indicated with the <var>[[SERVGA parameter|SERVGA]]</var> and <var>[[SERVGSZ parameter|SERVGSZ]]</var> parameters. The bits corresponding to NTBL and QTBL should not be set in both <var>SERVNSA</var> and <var>SERVGA</var> &ndash; if they are, an error message will be issued and the online will fail to come up.   


<p>For more information about server tables above the bar, see the  
<p>For more information about server tables above the bar, see [[Defining the runtime environment (CCAIN)#Server tables|Server tables]].</p>
<var class="book">[http://docs.rocketsoftware.com/nxt/gateway.dll/RKBnew556/model%20204/v7.4/m204_v7r4_system_manager.pdf Rocket Model 204 System Manager's Guide]</var>.</p>


[[Category:System parameters]]
[[Category:System parameters]]
[[Category:Parameters]]
[[Category:Parameters]]

Revision as of 23:10, 30 October 2014

Non swappable server areas

Summary

Default value
0
Parameter type
System
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, control non-swappable server areas that are placed above the 2G bar.

Each server table to be allocated 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:

BitServer 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.
X'01000000'XTBL — requires version 7.6 or later of Model 204.
X'10000000'RTBL — requires version 7.6 or later of Model 204.
X'08000000'KTBL — requires version 7.6 or later of Model 204.
X'00400000'ITBL — requires version 7.6 or later of Model 204.
X'00100000'FSCB — requires version 7.6 or later of Model 204.
X'00080000'STBL — requires version 7.6 or later of Model 204.
X'00040000'VTBL — requires version 7.6 or later of Model 204.
X'00020000'TTBL — requires version 7.6 or later of Model 204.
X'00010000'HTBFRS — requires version 7.6 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 maximum non-swappable setting for version 7.4 is X'02000000'. The maximum non-swappable setting for version 7.5 is X'02806000'. The maximum non-swappable setting for version 7.6 is X'1BDF6000'.

In Model 204 7.5 and later, QTBL and NTBL can alternatively be placed above-the-bar in a swappable area. This can be indicated with the SERVGA and SERVGSZ parameters. The bits corresponding to NTBL and QTBL should not be set in both SERVNSA and SERVGA – if they are, an error message will be issued and the online will fail to come up.

For more information about server tables above the bar, see Server tables.