Bug 1070075 – SNMP HRPROCESSORLOAD RETURNS INCORRECT VALUES FOR PROCESSOR #'S > 100

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Bug 1070075 - SNMP HRPROCESSORLOAD RETURNS INCORRECT VALUES FOR PROCESSOR #'S > 100

Summary:	SNMP HRPROCESSORLOAD RETURNS INCORRECT VALUES FOR PROCESSOR #'S > 100

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	net-snmp (Show other bugs)
Sub Component:
Version:	6.5
Hardware:	Unspecified Unspecified

Priority	unspecified Severity medium
Target Milestone:	rc
Target Release:	---
Assigned To:	Jan Safranek
QA Contact:	Marek Haicman
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:	1069979 1070076
Blocks:
	Show dependency tree / graph

Reported:	2014-02-26 03:21 EST by Jan Safranek
Modified:	2015-07-22 03:22 EDT (History)
CC List:	5 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	Previously, snmpd did not expect that the CPU number can have more than two digits. As a consequence, snmpd did not show more than 100 processors in the "HOST-RESOURCES-MIB::hrProcessorTable" object when reading CPU statistics. With this update, snmpd has been modified to no longer make assumptions about the CPU ID length. As a result, "HOST-RESOURCES-MIB::hrProcessorTable" now shows all CPUs.
Story Points:	---
Clone Of:	1069979
Environment:
Last Closed:	2015-07-22 03:22:35 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2015:1385	normal	SHIPPED_LIVE	Moderate: net-snmp security and bug fix update	2015-07-20 14:07:39 EDT

Groups: None (edit)

Description Jan Safranek 2014-02-26 03:21:42 EST

+++ This bug was initially created as a clone of Bug #1069979 +++

Description of problem:
using snmp monitor cpu usage with more than 100 processors. hrProcessorLoad will returns incorrect values for processor #'s > 100

Version-Release number of selected component (if applicable):
RHEL 5.x RHEL 6.x

How reproducible:

Steps to Reproduce:
1. using snmp monitor cpu usage with more than 100 processors.

Actual results:
hrProcessorLoad will return incorrect values for processor #'s

Expected results:
hrProcessorLoad will return correct values for processor #'s (letter than 100)

Additional info:
http://mailing.unix.net-snmp-users.narkive.com/o21D50GY/hrprocessorload-returns-incorrect-values-for-processor-s-100

The file agent/mibgroup/hardware/cpu/cpu_linux.c: netsnmp_cpu_arch_load() use below  hard code to skip cpuN
  b1 = b2+5; /* Skip "cpuN " */

When processor more than 100, the value will be wrong.

--- Additional comment from Luan Jianhai on 2014-02-25 21:41:40 EST ---

The patch have be applied to net-snmp upstream:
  http://git.code.sf.net/p/net-snmp/code: 
commit eef2f64b46357b353c79504bc593535ebe7421e7
Author: Niels Baggesen <nba@users.sourceforge.net>
Date:   Thu Jan 23 16:27:07 2014 +0100

    cpu_linux: support systems with more than 100 cpus.

Comment 5 errata-xmlrpc 2015-07-22 03:22:35 EDT

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/RHSA-2015-1385.html

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