Caché System Administration Guide - InterSystems Documentation

Configuring Caché
3. If you select the Enable Long Strings check box, Caché allocates a large string stack to handle
long strings for each process.
4. If you are running in an IPv6 network. you can select the IPv6 Enabled check box to indicate that
this instance of Caché accepts IP addresses in IPv6 format as well as IPv4 and DNS format. See
the IPv6 Support section for additional information.
Note:
The IPv6 Enabled check box is not displayed if the platform on which you are running
Caché does not support IPv6 networking.
5. You can change the Superserver Port Number for this Caché instance.
6. Click Save to save your modifications; restart Caché to activate them.
Some changes on this page require a Caché restart and some do not. If you modify one field that
requires a restart, no change to your configuration takes effect until a restart, even those that normally
do not require a restart.
Important:
If you have made changes system-wide to the configuration settings that require a
Caché restart, you receive the following:
WARNING: There are configuration changes saved that require
system restart to take effect.
After you close the page, the warning message does not appear again to remind you
that a restart is required.
2.4.1.1 Memory Support
Caché allocates half the space specified by routines to a pool of 64-KB buffers, three-eighths of the
space for a pool of 16-KB buffers, and one-eighth of the space for a pool of 4-KB buffers.
The maximum number of buffers allocated to any pool is limited to 65,529. Caché also never allocates
fewer than 205 buffers to any sized pool. This means the actual memory used for routine buffers can
be larger than specified in the configuration file. The format for Caché routines does not allow more
than 32,768 characters for literal strings regardless of the setting for the maximum routine size.
Important:
If you are configuring a large ECP system, allocate at least 50 MB of 8-KB buffers
for ECP control structures in addition to the 8-KB buffers required to serve your 8-
KB blocks over ECP. See the Memory Use on Large ECP Systems section of the
“Developing Distributed Applications” chapter of the Caché Distributed Data Management
Guide for details.
26 Caché System Administration Guide