*Synopsis*: ksh93 regresses head performance

CR 6877395 changed on Sep 2 2009 by <User 1-5Q-13476>

=== Field ============ === New Value ============= === Old Value =============

Synopsis               ksh93 regress head perfor.. head performance needs im..
Synopsis               ksh93 regresses head perf.. ksh93 regress head perfor..
====================== =========================== ===========================

     
*Change Request ID*: 6877395

*Synopsis*: ksh93 regresses head performance

  Product: solaris
  Category: shell
  Subcategory: korn93
  Type: Defect
  Subtype: Performance
  Status: 3-Accepted
  Substatus: 
  Priority: 3-Medium
  Introduced In Release: 
  Introduced In Build: 
  Responsible Engineer: 
  Keywords: 

=== *Description* ============================================================
As part of ksh93 update 2 project, head will be replaced with ksh93 internal 
implementation. During perfomance testing we discovered that head in ksh93 is 
slower than original Solaris implementation.

*** (#1 of 1): 2009-08-31 09:25:39 GMT+00:00 <User 1-1SURPB>


=== *Public Comments* ========================================================
What is the justification for integrating with these performance regressions?
Why not fix them, then integrate?

*** (#1 of 2): 2009-09-02 05:30:05 GMT+00:00 <User 1-5Q-13476>

There is on-going evaluation if it is even possible to remove the performance 
regression (it is not so significant) based on design (simple Solaris head 
command vs. more complex). This CR is placeholder to keep it in mind in the 
next phase of the ksh93 project and not ignore it.

*** (#2 of 2): 2009-09-02 06:54:10 GMT+00:00 <User 1-1SURPB>


=== *Workaround* =============================================================

=== *Additional Details* =====================================================
        Targeted Release: solaris_nevada
        Commit To Fix In Build: 
        Fixed In Build: 
        Integrated In Build: 
        Verified In Build: 
  See Also: 
  Duplicate of: 
  Hooks:
        Hook1: 
        Hook2: 
        Hook3: 
        Hook4: 
        Hook5: 
        Hook6: 
  Program Management: 
  Root Cause: 
  Fix Affects Documentation: No
  Fix Affects Localization: No

=== *History* ================================================================
        Date Submitted: 2009-08-31 09:25:39 GMT+00:00
        Submitted By: <User 1-1SURPB>

        Status Changed    Date Updated                  Updated By
        3-Accepted        2009-08-31 09:32:50 GMT+00:00 <User 1-1SURPB>


=== *Service Request* ========================================================
        Impact: Significant
        Functionality: Primary
        Severity: 2
        Product Name: solaris
        Product Release: solaris_nevada
        Product Build: snv_125
        Operating System: snv_125
        Hardware: generic
        Submitted Date: 2009-08-31 09:25:39 GMT+00:00


=== *Multiple Release (MR) Cluster* - 0 ======================================

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