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Wired memory pool
Table 12-4: Total available memory by platform
Platform
CompaqTru64 (Digital UNIX)
HP UNIX
IBM RS6000 AIX
SGI IRIX
Sun Solaris 32-bit
Sun Solaris 64-bit
b
Windows NT
a
You must specify the
-iqsmem
AIX.
b
You need Windows NT Enterprise to get this much memory.
On 64-bit platforms (Tru64, SGI IRIX, and Solaris 64-bit), the only limit is the
physical size of memory on the system.
For Windows NT systems, see the Adaptive Server IQ Installation and
Configuration Guide for more performance tuning hints, including
recommendations for small memory configurations.
For UNIX systems only, Adaptive Server IQ provides two command-line
options that can provide more memory.
On Digital UNIX, HP and Sun platforms, you can designate a specified amount
of memory as "wired" memory. This memory is locked down so that it cannot
be paged. Wired memory can improve performance. To create a pool of
"wired" memory on these UNIX platforms only, specify the
command-line switch, indicating the number of MB of wired memory. The
maximum value for
-iqwmem
•
3800 on Sun
•
2000 on HP UNIX
•
no real maximum for DEC
For example, to add 1GB of wired memory, you specify:
-iqwmem 1000
Warning!
Use this switch only if you have enough memory to dedicate some
of it for this purpose. Otherwise, you can cause serious performance
degradation.
CHAPTER 12
Managing System Resources
Total memory available
Effectively unlimited
a
3GB
a
2GB
Effectively unlimited
3.3GB
Effectively unlimited
2.5GB
option to get this much memory on HP UNIX and
varies by platform:
-iqwmem
435
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