PM54263: MARSHALL LIBRARY PERFORMANCE

Fixes are available

APAR status

Closed as program error.

Error description

Users want as fast performance as possible. Recent studies have
shown possible areas of improvements in data transformation
which involve
- less overhead in range checks using static values
- faster construction of BigDecimals and BigIntegers

Improve the performance of Records and DataBindings which are
targeting  COBOL, C and PL/I applications.  These applications
may be CICS, IMS or Batch applications.  They may also involve
Messaging or File based applications that are exchanging COBOL
data.

BPM release requriement: Z - Improve performance of COBOL, C,
PL/1 DataBindings (52992)

Code changes
------------------
In the marshall library:
Use the six pre-defined BigDecimal and BigInteger constants
instead of creating new objects:

 lowerRange_ = new BigDecimal("0");
changes to
 lowerRange_ = BigDecimal.ZERO;

Applies for all the following values:
BigDecimal.ZERO
BigDecimal.ONE
BigDecimal.TEN
BigInteger.ZERO
BigInteger.ONE
BigInteger.TEN

Use the "integer" constructors of the BigDecimal class instead
of the String constructor when creating known constant values:

 BigDecimal two = new BigDecimal("2");
 BigDecimal one = new BigDecimal("1");
 BigDecimal pointFive = new BigDecimal("0.5");
changes to
 BigDecimal two = new BigDecimal(2);
 BigDecimal one = BigDecimal.ONE;
 BigDecimal pointFive = new BigDecimal(5).movePointLeft (1);

Use the BigDecimal integral constructor when creating a
BigInteger from an integer value instead of the String
constructor:

 int exponentBase = 16;
 BigInteger biExponent = new
BigInteger(Integer.toString(exponentBase));
changes to
 int exponentBase = 16;
 BigInteger biExponent = new
BigDecimal(exponentBase).toBigInteger();

Use the "integer" constructors of the BigDecimal class instead
of the String constructor when data type is an integer type:

 result = new BigDecimal(Byte.toString(byteResult));
 result = new BigDecimal(Short.toString(shortResult));
 result = new BigDecimal(Short.toString(shortResult));
 result = new BigDecimal(Integer.toString(intResult));
 result = new BigDecimal(Integer.toString(intResult));
 result = new BigDecimal(Long.toString(longResult));
changes to
 result = new BigDecimal(byteResult);
 result = new BigDecimal(shortResult);
 result = new BigDecimal(shortResult);
 result = new BigDecimal(intResult);
 result = new BigDecimal(intResult);
 result = new BigDecimal(longResult);

Local fix

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server V7.0 and V8.0 using the marshall     *
*                  library, such as applications built using   *
*                  J2C tooling targeting CICS programs or IMS  *
*                  transactions.                               *
****************************************************************
* PROBLEM DESCRIPTION: Performance improvements in data        *
*                      transformation.                         *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
Users want as fast performance as possible. Recent studies
have shown possible areas of improvements in data
transformation which involve:
- less overhead in range checks using static values
- faster construction of BigDecimals and BigIntegers

Problem conclusion

Provided updates to the marshall library which improve
data transformation performance when working with BigDecimals
and BigIntegers.
The fix for this APAR is currently targeted for inclusion in
fix packs 7.0.0.23 and 8.0.0.3.  Please refer to the
Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Comments

APAR Information

APAR number
PM54263
Reported component name
WEBSPHERE APP S
Reported component ID
5724J0800
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-12-13
Closed date
2012-03-28
Last modified date
2012-03-28

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name
WEBSPHERE APP S
Fixed component ID
5724J0800

Applicable component levels

R700 PSY
UP
R800 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
28 October 2021

Tips

PM54263: MARSHALL LIBRARY PERFORMANCE

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name

Fixed component ID

Applicable component levels

R700 PSY

R800 PSY

Document Information

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