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<p class=MsoNormal><font size=2 color=blue face="Comic Sans MS"><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'><DEFANGED_div class=Section1>In
the linux, vmstat could provide some of the lacking information, such as minor
faults, context switches, system calls. </DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 color=blue face="Comic Sans MS"><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>&nbsp;</DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 color=blue face="Comic Sans MS"><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>boris</DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face="Comic Sans MS"><DEFANGED_span lang=EN-US
style='font-size:10.0pt;font-family:"Comic Sans MS"'>&nbsp;</DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face="Comic Sans MS"><DEFANGED_span lang=EN-US
style='font-size:10.0pt;font-family:"Comic Sans MS"'>There are my thoughts,
not&nbsp;my employer's.</DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 color=blue face="Comic Sans MS"><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:"Comic Sans MS";color:blue'>&nbsp;</DEFANGED_span></font></p>

<DEFANGED_div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'>

<p class=MsoNormal><font size=2 face=Tahoma><DEFANGED_span lang=EN-US style='font-size:
10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><DEFANGED_span style='font-weight:bold'>From:</DEFANGED_span></b>
cgl_discussion-bounces@lists.osdl.org
[mailto:cgl_discussion-bounces@lists.osdl.org] <b><DEFANGED_span style='font-weight:
bold'>On Behalf Of </DEFANGED_span></b>Howell, David P<br>
<b><DEFANGED_span style='font-weight:bold'>Sent:</DEFANGED_span></b> </DEFANGED_span></font><font size=2 face=Tahoma><DEFANGED_span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>Friday,
 October 10, 2003</DEFANGED_span></font><font size=2 face=Tahoma><DEFANGED_span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma'> </DEFANGED_span></font><font
 size=2 face=Tahoma><DEFANGED_span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>3:34
 AM</DEFANGED_span></font><font size=2 face=Tahoma><DEFANGED_span lang=EN-US style='font-size:
10.0pt;font-family:Tahoma'><br>
<b><DEFANGED_span style='font-weight:bold'>To:</DEFANGED_span></b> cgl_discussion<br>
<b><DEFANGED_span style='font-weight:bold'>Cc:</DEFANGED_span></b> Smith, Stanley W; Wenjen,
Wendell<br>
<b><DEFANGED_span style='font-weight:bold'>Subject:</DEFANGED_span></b> [cgl_discussion]
Enhancements to mpstat utility</DEFANGED_span></font></p>

<p class=MsoNormal><font size=3 face="Times New Roman"><DEFANGED_span lang=EN-US
style='font-size:12.0pt'>&nbsp;</DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span lang=EN-US style='font-size:
10.0pt;font-family:Arial'>Another item for release 3, from a customer who is
moving multi-threaded APPs to Linux.</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>They reported using
mpstat to help tune the locking in the original environment, but were </DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>dismayed that there is no
Linux equivalent or other tools for doing the same.</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>After looking at the open
source mpstat that is available for Red Hat Linux, it just displays</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>the minimal level of
processor utilization statistics (processor/%user/%system/%idle/intr).</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>Other versions for Unix
report additional information:</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>- Minor/Major faults</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>- Interprocessor cross
calls</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>- Context switches</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>- System calls</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>- Process migrations from
this processor</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>- Kernel lock statistics
(Mutex stalls)</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>- Wait time</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>This customer said that
the inability to use these tools on Linux was hindering their ability</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>to tune their application
effectively for Linux.</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>My guess is that the
current Linux mpstat is exposing everything that is available from the </DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>kernel, and that to do
better will require additional statistics gathering in the kernel as well </DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>as the hooks in the
mpstat utility to display them. This may be hard to sell to LKML.</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>While having all of this
under on hood is likely best for the customer, i.e. in mpstat, it would</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>seem reasonable if the
functionality were offered through several tools; I was thinking of the </DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>lockmeter framework and
utilities for the kernel locking statistics. Having a complete set of </DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>tools for determining
bottlenecks would be very useful. Documentation that describes how </DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>to use the utilities, and
how to identify and debug real problems is also needed.</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>For customers who are
used to using these tools for tuning on other Unixes, keeping as </DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>much of the presentation
of the stats similar would help, but may be difficult or impossible </DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>for Linux. </DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>Reference projects:</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a href="http://freshmeat.net/projects/mpstat/?topic_id=862">http://freshmeat.net/projects/mpstat/?topic_id=862</a>
&nbsp;- Utility version used on Linux (?)</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
LKML, for kernel changes to enable additional statistics</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>Documentation:</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
- Using the mpstat load displayer (SCO)</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
- <a href="http://docs.sun.com/db/doc/806-0625/6j9vfilr4?q=mpstat&amp;a=view">http://docs.sun.com/db/doc/806-0625/6j9vfilr4?q=mpstat&amp;a=view</a>
</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
- <a
href="http://sunsite.uakom.sk/sunworldonline/swol-08-1998/swol-08-perf.html">http://sunsite.uakom.sk/sunworldonline/swol-08-1998/swol-08-perf.html</a></DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoNormal><font size=2 face=Arial><DEFANGED_span style='font-size:10.0pt;
font-family:Arial'><DEFANGED_span
lang=EN-US style='font-size:10.0pt;font-family:Arial'>&nbsp;</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoAutoSig><font size=3 face="Times New Roman"><DEFANGED_span style='font-size:
12.0pt'><DEFANGED_span lang=EN-US style='font-size:12.0pt'>These are my opinions and not
official opinions of Intel Corp.</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoAutoSig><font size=3 face="Times New Roman"><DEFANGED_span style='font-size:
12.0pt'><DEFANGED_span lang=EN-US style='font-size:12.0pt'>&nbsp;</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoAutoSig><font size=3 face="Times New Roman"><DEFANGED_span style='font-size:
12.0pt'><DEFANGED_span lang=EN-US style='font-size:12.0pt'>David Howell</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoAutoSig><font size=3 face="Times New Roman"><DEFANGED_span style='font-size:
12.0pt'><DEFANGED_span lang=EN-US style='font-size:12.0pt'>Intel Corporation</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoAutoSig><font size=3 face="Times New Roman"><DEFANGED_span style='font-size:
12.0pt'><DEFANGED_span lang=EN-US style='font-size:12.0pt'>Telco Server Development</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoAutoSig><font size=3 face="Times New Roman"><DEFANGED_span style='font-size:
12.0pt'><DEFANGED_span lang=EN-US style='font-size:12.0pt'>Server Products Division</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoAutoSig><font size=3 face="Times New Roman"><DEFANGED_span style='font-size:
12.0pt'><DEFANGED_span lang=EN-US style='font-size:12.0pt'>Voice: (803) 216-2359&nbsp;
Fax: (803) 216-2178</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoAutoSig><font size=3 face="Times New Roman"><DEFANGED_span style='font-size:
12.0pt'><DEFANGED_span lang=EN-US style='font-size:12.0pt'>&nbsp;</DEFANGED_span></DEFANGED_span></font></p>

<p class=MsoAutoSig><font size=3 face="Times New Roman"><DEFANGED_span style='font-size:
12.0pt'><DEFANGED_span lang=EN-US style='font-size:12.0pt'>Intel Corporation</DEFANGED_span></DEFANGED_span></font></p>

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12.0pt'><DEFANGED_span lang=EN-US style='font-size:12.0pt'>Columbia</DEFANGED_span></font><DEFANGED_span
 lang=EN-US> </DEFANGED_span><DEFANGED_span lang=EN-US>Design</DEFANGED_span><DEFANGED_span lang=EN-US> </DEFANGED_span><DEFANGED_span
  lang=EN-US>Center</DEFANGED_span><DEFANGED_span lang=EN-US>, CBA-1</DEFANGED_span></p>

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12.0pt'><DEFANGED_span lang=EN-US style='font-size:12.0pt'>100 Center Point Circle,
  Suite 210</DEFANGED_span></DEFANGED_span></font></p>

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  lang=EN-US>SC</DEFANGED_span><DEFANGED_span lang=EN-US> </DEFANGED_span><DEFANGED_span lang=EN-US>29210</DEFANGED_span></p>

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lang=EN-US style='font-size:12.0pt'>david.p.howell@intel.com</DEFANGED_span></DEFANGED_span></font></p>

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