perfSONAR User Q&A and Other Discussion

["Roderick Mooi" <>]

Hi

Referring to the attached graph, a few days ago the incoming throughput to 
one of our ps servers dropped drastically. Some troubleshooting revealed no 
explanation but isolated the problem to the server (or server-router 
interface). Yesterday (9 Apr), the server was updated around 9:00 and 
rebooted at 15:00. The problem disappeared (the graph indicates around 12:00) 
following the update and bwctl test results resumed to normal. Does anyone 
have an explanation for this?

The yum history is also attached if needed.

Thanks!

Roderick


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Attachment: perfsonar3_throughput_reboot.png
Description: PNG image

$ sudo yum  history info
Loaded plugins: fastestmirror, security
Transaction ID : 5
Begin time     : Wed Apr  9 09:04:13 2014
Begin rpmdb    : 724:06705ed013f37f2f76ee64b2438c5b0719788900
End time       :            09:06:38 2014 (145 seconds)
End rpmdb      : 726:305c15576112df1205e66ab41946dacdd1bf6cd6
User           :  <rmooi>
Return-Code    : Success
Command Line   : update
Transaction performed with:
    Installed     rpm-4.8.0-37.el6.x86_64                         @base
    Installed     yum-3.2.29-43.el6.centos.noarch                 @updates
    Installed     yum-metadata-parser-1.1.2-16.el6.x86_64         
@anaconda-CentOS-201303020151.x86_64/6.4
    Installed     yum-plugin-fastestmirror-1.1.30-17.el6_5.noarch @updates
Packages Altered:
    Updated coreutils-8.4-31.el6.x86_64                           @base
    Update            8.4-31.el6_5.1.x86_64                       @updates
    Updated coreutils-libs-8.4-31.el6.x86_64                      @base
    Update                 8.4-31.el6_5.1.x86_64                  @updates
    Updated device-mapper-multipath-0.4.9-72.el6.x86_64           @base
    Update                          0.4.9-72.el6_5.1.x86_64       @updates
    Updated device-mapper-multipath-libs-0.4.9-72.el6.x86_64      @base
    Update                               0.4.9-72.el6_5.1.x86_64  @updates
    Updated dmidecode-1:2.11-2.el6.x86_64                         
@anaconda-CentOS-201303020151.x86_64/6.4
    Update            1:2.12-5.el6_5.x86_64                       @updates
    Updated glib2-2.26.1-3.el6.x86_64                             @base
    Update        2.26.1-7.el6_5.x86_64                           @updates
    Updated gnutls-2.8.5-10.el6_4.2.x86_64                        
@a-updates/6.4
    Update         2.8.5-13.el6_5.x86_64                          @updates
    Updated grep-2.6.3-4.el6.x86_64                               @base
    Update       2.6.3-4.el6_5.1.x86_64                           @updates
    Updated httpd-2.2.15-29.el6.centos.x86_64                     
@a-updates/6.4
    Update        2.2.15-30.el6.centos.x86_64                     @updates
    Updated httpd-tools-2.2.15-29.el6.centos.x86_64               
@a-updates/6.4
    Update              2.2.15-30.el6.centos.x86_64               @updates
    Updated initscripts-9.03.40-2.el6.centos.x86_64               @base
    Update              9.03.40-2.el6.centos.1.x86_64             @updates
    Updated iperf3-3.0.1-1.el6.x86_64                             @epel
    Update         3.0.2-1.el6.x86_64                             @epel
    Install kernel-2.6.32-431.11.2.el6.x86_64                     @updates
    Install kernel-devel-2.6.32-431.11.2.el6.x86_64               @updates
    Updated kernel-firmware-2.6.32-431.3.1.el6.aufs.web100.noarch 
@Internet2-web100_kernel
    Update                  2.6.32-431.11.2.el6.noarch            @updates
    Updated kernel-headers-2.6.32-431.3.1.el6.aufs.web100.x86_64  
@Internet2-web100_kernel
    Update                 2.6.32-431.11.2.el6.x86_64             @updates
    Updated kpartx-0.4.9-72.el6.x86_64                            @base
    Update         0.4.9-72.el6_5.1.x86_64                        @updates
    Updated krb5-devel-1.10.3-10.el6_4.6.x86_64                   
@a-updates/6.4
    Update             1.10.3-15.el6_5.1.x86_64                   @updates
    Updated krb5-libs-1.10.3-10.el6_4.6.x86_64                    
@a-updates/6.4
    Update            1.10.3-15.el6_5.1.x86_64                    @updates
    Updated libtiff-3.9.4-9.el6_3.x86_64                          
@anaconda-CentOS-201303020151.x86_64/6.4
    Update          3.9.4-10.el6_5.x86_64                         @updates
    Updated libtirpc-0.2.1-6.el6_4.x86_64                         
@a-updates/6.4
    Update           0.2.1-6.el6_5.1.x86_64                       @updates
    Updated man-pages-overrides-6.5.2-1.el6.noarch                @base
    Update                      6.5.3-1.el6_5.noarch              @updates
    Updated mod_auth_shadow-2.3-1.el6.x86_64                      @a-EPEL/6.4
    Update                  2.3-2.el6.x86_64                      @epel
    Updated mod_ssl-1:2.2.15-29.el6.centos.x86_64                 
@a-updates/6.4
    Update          1:2.2.15-30.el6.centos.x86_64                 @updates
    Updated mysql-5.1.71-1.el6.x86_64                             @base
    Update        5.1.73-3.el6_5.x86_64                           @updates
    Updated mysql-devel-5.1.71-1.el6.x86_64                       @base
    Update              5.1.73-3.el6_5.x86_64                     @updates
    Updated mysql-libs-5.1.71-1.el6.x86_64                        @base
    Update             5.1.73-3.el6_5.x86_64                      @updates
    Updated mysql-server-5.1.71-1.el6.x86_64                      @base
    Update               5.1.73-3.el6_5.x86_64                    @updates
    Updated net-snmp-1:5.5-49.el6.x86_64                          @base
    Update           1:5.5-49.el6_5.1.x86_64                      @updates
    Updated net-snmp-libs-1:5.5-49.el6.x86_64                     @base
    Update                1:5.5-49.el6_5.1.x86_64                 @updates
    Updated net-snmp-utils-1:5.5-49.el6.x86_64                    @base
    Update                 1:5.5-49.el6_5.1.x86_64                @updates
    Updated nss-3.15.3-3.el6_5.x86_64                             @updates
    Update      3.15.3-6.el6_5.x86_64                             @updates
    Updated nss-sysinit-3.15.3-3.el6_5.x86_64                     @updates
    Update              3.15.3-6.el6_5.x86_64                     @updates
    Updated nss-tools-3.15.3-3.el6_5.x86_64                       @updates
    Update            3.15.3-6.el6_5.x86_64                       @updates
    Updated openssl-1.0.1e-16.el6_5.4.x86_64                      @updates
    Update          1.0.1e-16.el6_5.7.x86_64                      @updates
    Updated openssl-devel-1.0.1e-16.el6_5.4.x86_64                @updates
    Update                1.0.1e-16.el6_5.7.x86_64                @updates
    Updated postfix-2:2.6.6-2.2.el6_1.x86_64                      
@anaconda-CentOS-201303020151.x86_64/6.4
    Update          2:2.6.6-6.el6_5.x86_64                        @updates
    Updated postgresql-libs-8.4.18-1.el6_4.x86_64                 @base
    Update                  8.4.20-1.el6_5.x86_64                 @updates
    Updated psmisc-22.6-15.el6_0.1.x86_64                         
@anaconda-CentOS-201303020151.x86_64/6.4
    Update         22.6-19.el6_5.x86_64                           @updates
    Updated quota-1:3.17-20.el6.x86_64                            @base
    Update        1:3.17-21.el6_5.x86_64                          @updates
    Updated selinux-policy-3.7.19-231.el6.noarch                  @base
    Update                 3.7.19-231.el6_5.1.noarch              @updates
    Updated selinux-policy-targeted-3.7.19-231.el6.noarch         @base
    Update                          3.7.19-231.el6_5.1.noarch     @updates
    Updated syslinux-4.02-8.el6.x86_64                            
@anaconda-CentOS-201303020151.x86_64/6.4
    Update           4.02-9.el6_5.x86_64                          @updates
    Updated tzdata-2013i-2.el6.noarch                             @updates
    Update         2014b-1.el6.noarch                             @updates
    Updated udisks-1.0.1-4.el6.x86_64                             
@anaconda-CentOS-201303020151.x86_64/6.4
    Update         1.0.1-7.el6_5.x86_64                           @updates
    Updated upstart-0.6.5-12.el6_4.1.x86_64                       
@a-updates/6.4
    Update          0.6.5-13.el6_5.3.x86_64                       @updates
    Updated wget-1.12-1.8.el6.x86_64                              
@anaconda-CentOS-201303020151.x86_64/6.4
    Update       1.12-1.11.el6_5.x86_64                           @updates
history info