02-09-2002
Well there's not much to say. maxssiz is the maximum size of the stack (which is a separate segment). maxdsiz is the maximum size of the data seqment. And even though you didn't ask, maxtsiz is the maximum size of the text segment.
I would strongly suggest that you sam to increase them. sam->kernel configuation->configurable parameters will get you there. It is possible to do this from the command line, but it's a tedious. poorly automated process with lots of opportunities to make fatal mistakes.
On HP-UX, swapon is the command to add a swap area. And swapinfo is the command to see how much swap is being used.
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LEARN ABOUT HPUX
intr_strobe_ics_pct
intr_strobe_ics_pct(5) File Formats Manual intr_strobe_ics_pct(5)
NAME
intr_strobe_ics_pct - limit for the percent of time a processor is allowed to spend in interrupt context
VALUES
Failsafe
Default
Allowed values
Setting to will switch the feature off.
Recommended values
DESCRIPTION
specifies the system limit for the percent of time a processor is allowed to spend in interrupt context. When the tunable is set to a
value less than the kernel does not allow I/O interrupts to consume the processor time beyond the set limit and hence the threads and other
low priority interrupts get time to execute. This is important when the system is under a heavy I/O interrupt load and some threads like
heartbeat timer in service guard environment need to run within a limited time delay.
In the normal working of the system, the value of the tunable should be
If is to less than a message like the following may be seen in the message buffer.
The message buffer can be read via or This message indicates that the percent of time spent on the processor crossed the specified limit
and corrective action has been taken.
Who Is Expected to Change This Tunable?
Only HP Field engineers should change the value of this tunable.
Restrictions on Changing
Changes to this tunable take effect immediately.
When Should the Value of This Tunable Be Lowered?
The value should be lowered only when heavy I/O interrupt load is causing a time critical process to timeout.
What Are the Side Effects of Lowering the Value?
Reducing the value of the tunable would give the thread context more time to execute. However, the overall system throughput may decrease.
What Other Tunable Values Should Be Changed at the Same Time?
This tunable is independent of other tunables.
WARNINGS
All HP-UX kernel tunable parameters are release specific. This parameter 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 values. For information about the effects of installation on tun-
able values, 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 ALSO
kctune(1M), kcweb(1M).
Tunable Kernel Parameters intr_strobe_ics_pct(5)