Bug 1401060

Summary:	Poor StrictMath performance due to non-optimized compilation
Product:	Red Hat Enterprise Linux 7	Reporter:	Gustavo Romero <gusbromero>
Component:	java-1.8.0-openjdk	Assignee:	Andrew John Hughes <ahughes>
Status:	CLOSED ERRATA	QA Contact:	Lukáš Zachar <lzachar>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	7.3	CC:	ahughes, dbhole, gusbromero, jvanek
Target Milestone:	rc
Target Release:	---
Hardware:	ppc64le
OS:	Linux
Whiteboard:
Fixed In Version:	java-1.8.0-openjdk-1.8.0.111-4.b18.el7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-08-01 08:46:49 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:
Bug Blocks:	1390370

Description Gustavo Romero 2016-12-02 16:27:04 UTC

Description of problem:

Currently fdlibm optimization is disabled for PPC64, as a consequence StrictMath methods like, but not limited to, sin(), cos(), and tan() perform poorly. 

JBS bug id comprising full discussion and references:
https://bugs.openjdk.java.net/browse/JDK-8170153

How reproducible:
Please refer to "Initial discussion on ML" link for a full discussion and how to reproduce the issue.

Comment 1 Gustavo Romero 2016-12-02 16:29:02 UTC

Dear maintainer, upstream patch for OpenJDK 9 is reviewed and awaiting Oracle's approval to be merged. Backport to OpenJDK 8 will be requested in the due time but is trivial.

Thanks.

Comment 2 Gustavo Romero 2016-12-19 20:05:19 UTC

Hi Andrew,

Please, find the patches in question already backported to 8u upstream:

http://hg.openjdk.java.net/jdk8u/jdk8u-dev/rev/fddd627ea372
http://hg.openjdk.java.net/jdk8u/jdk8u-dev/jdk/rev/80927e772b9a

Thanks.

Comment 3 Andrew John Hughes 2017-01-09 18:10:16 UTC

Looks like they're already in the aarch64/jdk8u repo too:

http://hg.openjdk.java.net/aarch64-port/jdk8u/rev/7dc91fd23728
http://hg.openjdk.java.net/aarch64-port/jdk8u/jdk/rev/7c54c63ba667

So we'll pick them up anyway.

Comment 7 errata-xmlrpc 2017-08-01 08:46:49 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2017:1831