Bug 1123005

Summary:	Rebase to grep-2.20 (or later)
Product:	Red Hat Enterprise Linux 7	Reporter:	Jaroslav Škarvada <jskarvad>
Component:	grep	Assignee:	Jaroslav Škarvada <jskarvad>
Status:	CLOSED ERRATA	QA Contact:	Jan Kepler <jkejda>
Severity:	unspecified	Docs Contact:
Priority:	high
Version:	7.0	CC:	hartsjc, isenfeld, jkejda, rvokal
Target Milestone:	rc	Keywords:	Performance, Rebase
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	grep-2.20-1.el7	Doc Type:	Rebase: Bug Fixes and Enhancements
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-03-05 10:02:25 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:
Embargoed:

Description Jaroslav Škarvada 2014-07-24 15:11:17 UTC

Description of problem:
The latest grep-2.20 came with several performance tweaks that improve its performance. For some use cases the performance improvement is drastical. That's why it would be useful to have it in RHEL-7.1. This may improve user experience of cusotmers.

Version-Release number of selected component (if applicable):
grep-2.16-1.el7

How reproducible:
Always

Steps to Reproduce:
1. Check the grep version

Actual results:
grep-2.16-1.el7

Expected results:
grep-2.20-1.el7 or later


Additional info:
The grep-2.20 is in the f21 and f22 for a while and no compatiblity problem have been noticed so far.

Comment 6 James Hartsock 2015-01-29 19:09:52 UTC

Using customer provided example in case 01035621, can clearly see that grep-2.20-1.el7 in RHEL 7.1 beta is much faster than grep-2.16-1.el7 in RHEL 7.0

grep-2.16-1.el7 in RHEL 7.0
~~~
[root@rhel7-0 ~]# cat bgis2.recorded bgis2.serverlist > /dev/null #make sure files in cache
[root@rhel7-0 ~]# rpm -q grep
grep-2.16-1.el7.x86_64
[root@rhel7-0 ~]# time grep -v -f bgis2.recorded bgis2.serverlist
wa95dbx3
real	4m29.203s
user	4m27.642s
sys	0m0.989s
[root@rhel7-0 ~]# time fgrep -v -f bgis2.recorded bgis2.serverlist
wa95dbx3
real	0m0.041s
user	0m0.019s
sys	0m0.005s
~~~



grep-2.20-1.el7 in RHEL 7.1
~~~
[root@rhel7-1 ~]# cat bgis2.recorded bgis2.serverlist > /dev/null #make sure files in cache
[root@rhel7-1 ~]# rpm -q grep
grep-2.20-1.el7.x86_64
[root@rhel7-1 ~]# time grep -v -f bgis2.recorded bgis2.serverlist
wa95dbx3
real	0m22.091s
user	0m21.379s
sys	0m0.660s
[root@rhel7-1 ~]# time fgrep -v -f bgis2.recorded bgis2.serverlist
wa95dbx3
real	0m0.041s
user	0m0.016s
sys	0m0.004s
~~~

Comment 8 errata-xmlrpc 2015-03-05 10:02:25 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://rhn.redhat.com/errata/RHBA-2015-0435.html