Capacity, Scaling, and Limits impacts summary
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This impact class contains impacts related to HP-UX Capacity,
Scaling, and Limits changes. Many of these impacts may require you
to modify your source code.
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Newer versions of HP-UX may contain enhancements to certain default
per-process limits and other scalability factors. While many of these
limits are controllable through tunable variables in the kernel and other
mechanisms, the default values for these limits may be different from one
release of HP-UX to another. In addition, differences exist for 32-bit
and 64-bit applications as noted in the table below.
HP-UX 11i Default Process
Resource Limits
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HP-UX 11i 32-bit
Applications |
HP-UX 11i 64-bit
Applications |
cputime |
unlimited |
unlimited |
filesize |
unlimited |
unlimited |
datasize |
256 MB |
1 GB |
stacksize |
8 MB |
256 MB |
coredumpsize |
unlimited |
unlimited |
descriptors |
1024 |
1024 |
memoryuse |
unlimited |
unlimited |
Run-Time
Limits
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| Run-time limits affect a program's run-time capabilities, but are
not controlled on a per-process basis. These limits, such as the
number of threads per process, are kernel tunable parameters. The
following table lists some of the more important limits that affect a
process. |
Default Run-Time
Limits
| HP-UX 11i |
Description |
| Name |
Default |
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maxfiles |
60 |
Soft file limit per process |
maxfiles_lim |
1024 |
Hard file limit per process |
max_thread_proc |
256 |
Maximum number of threads allowed in each
process |
maxuprc |
256 |
Maximum number of user processes |
nfile |
8192 |
Maximum number of open files system-wide |
nflocks |
200 |
Maximum number of file locks system-wide |
Note: To include only Capacity, Scaling, and Limits impacts when
running the scansummary and scandetail tools, use
the option:
+C CAP
To exclude these impacts, use the option:
-C CAP
For more information on filtering output in reports, see Filtering the Output.
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