For initial use of SoftBench, you may not need to change kernel parameters.
It is recommended that you finish installing
and verifying simple SoftBench operation before modifying
kernel parameters. This is because modifying these parameters necessitates
regenerating the kernel, and regenerating the kernel at the same
time that you install a product makes troubleshooting problems much
more complex.
To avoid exceeding the default limits for certain kernel resources
and incurring possible loss of data during heavy SoftBench use,
check the recommended values in the following table for configurable
kernel parameters. See the HP 9000 System Administration
Tasks manual for default values and further details.
Table A-1 Recommended Kernel Parameter Values for SoftBench
Parameter | Description | Recommended Value |
|---|
maxdsize | Maximum data segment size. | 128 Mb or higher is recommended. maxdsize should not exceed available swap space. Setting maxdsize equal to RAM is recommended. Default is adequate
only for light usage: small programs, one task at a time. |
maxuprc | Maximum number of processes that a user can
run simultaneously. | Default value + 50 |
nproc | Maximum number of processes that can exist
on the system simultaneously. | Default
value + 30 per concurrent SoftBench user. In addition, the following
should be true: nproc > (maxuprc+30) |
npty | Maximum number of pty devices in the system. | The default value is generally sufficient.
Systems running more than 10 sessions of SoftBench simultaneously may
need to increase this value. |
If you had previously raised the value of any of these parameters
because your system was exceeding the original limit, use your current
value as the "default value" when you calculate the recommended
value.
You can use SAM to determine the values of the parameters
in your kernel, and change the values of these parameters as necessary.
For more information, see "Reconfiguring the Kernel" in HP
9000 System Administration Tasks.
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