maxtsiz(5)maxtsiz(5)NAME
maxtsiz, maxtsiz_64bit - maximum size (in bytes) of the text segment
for any user process
VALUES
Default
Allowed values
DESCRIPTION
User programs on HP-UX systems are composed of five discrete segments
of virtual memory: text (or code), data, stack, shared, and I/O. Each
segment occupies an architecturally defined range of the virtual
address space which sets the upper limit to their size. However, text,
data and stack segments may have a smaller maximum enforced via the and
tunables.
controls the size of the text segment, which is the read-only exe‐
cutable object code for the process that can be shared by multiple pro‐
cesses executing the same program. For example, all copies of vi on
the system use the same text segment.
The limit enforced by is not applicable for HP-UX 32-bit (Mostly Pri‐
vate Address Space) executables. For 32-bit executables, the only
limit is that the entire address space of the process cannot exceed
4GB. See the for details.
Who is Expected to Change This Tunable?
Anyone.
Restrictions on Changing
Changes to this tunable take effect immediately. The size is expected
to be a multiple of the base page size. See the description of in get‐
conf(1) for more details. If the value specified is not a multiple of
the base page size, it will be rounded down to the nearest multiple of
the base page size.
When Should the Value of This Tunable Be Raised?
should be raised if user processes are receiving the error with the
following message:
or
What Are the Side Effects of Raising the Value?
None.
When Should the Value of This Tunable Be Lowered?
This tunable should be lowered to limit the text size of running pro‐
cesses; there is no system performance reason to do so though.
What Are the Side Effects of Lowering the Value?
None.
What Other Tunable Values Should Be Changed at the Same Time?
None.
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parame‐
ter may be removed or have its meaning changed in future releases of
HP-UX.
Installation of optional kernel software, from HP or other vendors, may
cause changes to tunable parameter values. After installation, some
tunable parameters may no longer be at the default or recommended val‐
ues. For information about the effects of installation on tunable val‐
ues, consult the documentation for the kernel software being installed.
For information about optional kernel software that was factory
installed on your system, see at
AUTHOR
was developed by HP.
SEE ALSOgetconf(1), maxdsiz(5), maxssiz(5).
Tunable Kernel Parameters maxtsiz(5)
