HP-UX Reference (11i v3 07/02) - 5 Miscellaneous Topics (vol 9)

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Aries(5)
Itanium(R)-based Systems Only
Aries(5)
Default 64 KB 64 KB
Max ssz value ssz value
Min 64 KB 64 KB
At startup time, Aries computes the minimum value of
-issz by adding the sizes of argu-
ment strings, environment strings, and keybits structure. If the computed value is greater
than 64 Kb, Aries sets the minimum value of
-issz to the computed value.
-noasync_chk
Causes Aries to not generate asynchronous event check stub in translated code. This
option can be used only with nonmultithreaded applications. This option can provide better
performance for CPU intensive workloads.
The default value of this parameter is
Off
.
-nocompat_core
Causes Aries to generate core file with OS field with release version of the HP-UX on native
Itanium-based systems. Such core file may not work with
gdb from older HP-UX platform.
The default value of this parameter is
Off.
-noopt_ldcw
Causes Aries to not optimize translation for PA-RISC opcode LDCW and LDCD. Use this
option only if multithreaded does not work correctly under Aries. Using this option causes
slowdown of the order of 3x-4x.
The default value of this parameter is Off.
-nosched
Causes Aries to not optimize and schedule the translated code. This option is useful only to
triage problems when an application fails running in translated code. Using this option can
slowdown performance by about 20%.
The default value of this parameter is Off.
-notrans
Instructs Aries not to translate any PA-RISC basic blocks. Instead, all the basic blocks will
be emulated through the Aries interpreter. This option causes severe performance degra-
dation. This option is useful only to triage problems if a PA-RISC application fails while
running with Aries dynamic translator.
The default value of this parameter is Off.
-nounsafetrans
Do not dynamically translate the self modifying code. This option is useful only to triage
problems encountered in running PA-RISC JVM under Aries. This option causes about 2x
performance slowdown for Java based applications.
The default value of this parameter is Off.
-order Specifies that the PA-RISC application expects strong memory ordering. Use this option
only when a PA-RISC application expecting strong memory ordering fails under Aries.
Such an application would be one which does not use memory ordering semantics like ,O
completer in load/store instructions and still expects strong memory ordering. Using
this option causes 3x-4x performance slowdown.
The default value of this parameter is Off.
-osinc size
Specifies the chunk size (in kbytes) for incremental memory allocation in Aries for PA-RISC
application stack, Aries heap, and so on.
Value 32-bit Aries 64-bit Aries
Default 64 KB 64 KB
Max -NA- -NA-
Min 4KB 4KB
The maximum and minimum values of this parameter are not checked in Aries. The max-
imum value of this parameter should be the least of following: ssz, ccsz, heap_ssz
values, and 5 MB. The minimum value of this parameter should be the default page size,
that is, 4 KB.
HP-UX 11i Version 3: February 2007 − 6 − Hewlett-Packard Company 69