<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:D="DAV:" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
span.EmailStyle19
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.EmailStyle20
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.EmailStyle21
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><span style='color:#1F497D'>Hi folks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I have an 8-node cluster running
on an IBM Bladecenter HS21. Using RHEL 5.2, GFS (no GFS2).<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>The nodes are exhibiting
high-cpu load with the following apps:<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>aisexec and cman_tool<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Both these apps race the cpu
without any other user apps doing much at all.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Affectively, the user experience
is dog-slow.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>After I reboot one of the nodes
it clears up, these apps (aisexec and cman_tool)\<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>seem to behave, for
awhile. Eventually they race the cpu again days to weeks later.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Has anyone ever experienced
this? Top output is below.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Ed<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> [root@blade1]# top<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>top - 13:47:51 up 40 days,
22:16, 37 users, load average: 4.17, 3.94, 3.86<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Tasks: 372 total, 2
running, 369 sleeping, 1 stopped, 0 zombie<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Cpu(s): 5.9%us,
32.6%sy, 0.0%ni, 61.4%id, 0.0%wa, 0.0%hi, 0.0%si,
0.0%st<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Mem: 8311372k
total, 1934844k used, 6376528k free, 76332k
buffers<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Swap: 8388600k
total, 322976k used, 8065624k free, 443172k
cached<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> PID
USER PR NI VIRT RES SHR S
%CPU %MEM TIME+ COMMAND<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 4352
root RT 0 37404 35m 2020
R 100 0.4 10519:34 aisexec<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>20806
root 16 0 1684 560
484 S 42 0.0 8324:49 cman_tool<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>12501
root 15 0 1680 556
484 S 31 0.0 609:38.46 cman_tool<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>27245
root 16 0 1688 560
484 S 30 0.0 508:14.31 cman_tool<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 4635
root 34 19
0 0 0 S 2
0.0 1271:52 kipmi0<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 5047
root 18 0 405m 17m 6260
S 1 0.2 21:57.04 cimserver<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>28975
root 15 0 2564 1296 900
R 1 0.0 0:00.05 top<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 1
root 15 0 2064 576
524 S 0 0.0 0:02.91 init<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 2
root RT -5
0 0 0 S 0
0.0 0:02.98 migration/0<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 3
root 34 19
0 0 0 S 0
0.0 0:00.11 ksoftirqd/0<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 4
root RT -5
0 0 0 S 0
0.0 0:00.00 watchdog/0<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'> 5
root RT -5
0 0 0 S 0
0.0 0:01.29 migration/1<o:p></o:p></span></p>
</div>
</body>
</html>