Bug 1238550

Summary:	Python PMAPI clients suboptimal signal handling
Product:	Red Hat Enterprise Linux 7	Reporter:	Marko Myllynen <myllynen>
Component:	pcp	Assignee:	Nathan Scott <nathans>
Status:	CLOSED ERRATA	QA Contact:	Miloš Prchlík <mprchlik>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.2	CC:	brolley, fche, lberk, mbenitez, mcermak, mgoodwin, mprchlik, nathans
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-11-04 04:22:22 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 Marko Myllynen 2015-07-02 06:55:17 UTC

Description of problem:
pmiostat doesn not react to signals instantly, for example in the following scenario Ctrl-C is pressed instantly after pmiostat starts but it takes almost 10 seconds before pmiostat quits:

localhost:~> pmiostat -t10s
^Clocalhost:~> 

Version-Release number of selected component (if applicable):
pcp-3.10.5-2.el7.x86_64

Comment 2 Nathan Scott 2015-07-15 07:17:21 UTC

Mark, you know this code best - please reassign back to me if time/other constraints get in the way of fixing it for 7.3 - cheers.

Comment 3 Marko Myllynen 2015-10-08 13:27:41 UTC

This is actually not limited to pmiostat only but happens with any Python client.

Comment 4 Nathan Scott 2015-10-12 01:00:57 UTC

This is fixed upstream now (commit 40141eeec6) - resulted from a poor interaction between signal handling in the python interpreter and a libpcp nanosleep call.

Comment 6 Miloš Prchlík 2016-08-20 15:50:00 UTC

Verified for build pcp-3.11.3-3.el7.

Comment 8 errata-xmlrpc 2016-11-04 04:22:22 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-2016-2344.html