Bug 463609

Summary:	[LTC 6.0 FEAT] 201185:Iconv character Conversion Routines Speedup.
Product:	Red Hat Enterprise Linux 6	Reporter:	IBM Bug Proxy <bugproxy>
Component:	glibc	Assignee:	Andreas Schwab <schwab>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Petr Muller <pmuller>
Severity:	high	Docs Contact:
Priority:	high
Version:	6.0	CC:	drepper, ebachalo, ejratl, fweimer, jakub, ohudlick, pmuller, snagar, syeghiay
Target Milestone:	alpha	Keywords:	FutureFeature, Reopened
Target Release:	6.0
Hardware:	s390x
OS:	All
Whiteboard:
Fixed In Version:	glibc-2.10.90-26	Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-11-10 20:28:51 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	356741, 554559

Description IBM Bug Proxy 2008-09-24 03:20:36 UTC

=Comment: #0=================================================
Emily J. Ratliff <emilyr.com> - 2008-09-16 18:07 EDT
1. Feature Overview:
Feature Id:	[201185]
a. Name of Feature:	Iconv character Conversion Routines Speedup.
b. Feature Description
Make use of the translate hw instruction to speedup character conversion routines in glibc.

2. Feature Details:
Sponsor:	zSeries
Architectures:
s390x

Arch Specificity: Purely Arch Specific Code
Affects Toolchain: Yes
Delivery Mechanism: Direct from community
Category:	Toolchain
Request Type:	Toolchain - Enhancement from IBM
d. Upstream Acceptance:	In Progress
Sponsor Priority	1
f. Severity: High
IBM Confidential:	no
Code Contribution:	IBM code
g. Component Version Target:	glibc 2.8
Performance Assistance:	yes

3. Business Case
Improved performance (approx. 15x) in character conversion routines by exploiting HW instruction
rather than doing it in SW. Character conversion routines are repeatedly used in System z
application during conversion between EBCDIC and ASCII character sets since the character set of
data stored in a database often differ from the character set used for files and system routines.

4. Primary contact at Red Hat: 
John Jarvis
jjarvis

5. Primary contacts at Partner:
Project Management Contact:
Hans-Georg Markgraf, mgrf.com, Boeblingen 49-7031-16-3978

Technical contact(s):
Gonzalo Muelas Serrano, gmuelas.com

IBM Manager:
Thomas Schwarz, t.schwarz.com

Comment 1 Ulrich Drepper 2008-09-24 03:43:38 UTC

We can add such a functionality once IBM has provided an appropriate patch and it is accepted upstream.

Comment 2 Ulrich Drepper 2008-09-24 03:45:37 UTC

BZ somehow automatically closed the bug...

Comment 3 IBM Bug Proxy 2008-09-24 07:51:07 UTC

Hello Red Hat,

yes, IBM will provide a patch as soon as coding is complete and it will be
submited for upstream acceptance.

Thank you,
Gonzalo Muelas.

Comment 4 IBM Bug Proxy 2009-03-02 12:21:41 UTC

The code for this feature is submitted for glibc 2.10.
glibc 2.10 is part of Fedora 11.

Expect this to come via upstream glibc 2.10

No code attach to feature BZ

Comment 5 IBM Bug Proxy 2009-09-22 13:20:25 UTC

------- Comment From mgrf.com 2009-09-22 09:12 EDT-------
This is accepted upstream with glibc 2.11
No code to attach -  Red Hat takes patch from upstream

Comment 6 releng-rhel@redhat.com 2009-11-04 13:28:51 UTC

Fixed in 'glibc-2.10.90-26', included in compose 'RHEL6.0-20091103.0'.
Moving to ON_QA.

Comment 8 IBM Bug Proxy 2010-05-11 15:01:57 UTC

------- Comment From mgrf.com 2010-05-11 10:55 EDT-------
This feature is verified on R6 betas
-> set to verified

Comment 9 releng-rhel@redhat.com 2010-11-10 20:28:51 UTC

Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.