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Is this the right summary?<br>
<blockquote type="cite">
<pre>Total number of events: 512
Shortest event (s): 30
Longest event (s): 43
Total duration of all events (s): 17906
Mean event duration (s): 34.97265625
Standard deviation of event duration (s): 2.67205488703656
Maximum number of events at one time: 262
</pre>
</blockquote>
which shows that it takes ~35 sec for Swift to run a 30 sec task? 5
sec overhead sounds pretty good, if we can keep it this low as we scale
up to more CPUs :)<br>
<br>
Good job!<br>
<br>
Ioan<br>
<br>
Zhao Zhang wrote:
<blockquote cite="mid:48F8D183.2010303@uchicago.edu" type="cite">Hi,
All
<br>
<br>
After the optimization last week, I was suffering the 2nd round task
poor performance, as you could tell
<br>
from the "info trails" picture on
<a class="moz-txt-link-freetext" href="http://www.ci.uchicago.edu/~zzhang/report-sleep-20081016-1509-gqr8tea9/">http://www.ci.uchicago.edu/~zzhang/report-sleep-20081016-1509-gqr8tea9/</a>
<br>
<br>
with bunch of tests and verification, I found the poor performance
comes from the info log transfer. Thus I tried
<br>
the collective IO for info log transfer, and it solves the problem, I
get such a beautiful picture:
<br>
<br>
I am working more to integrate the Collective IO system along with
swift on BGP.
<br>
<br>
zhao
<br>
<br>
<hr size="4" width="90%"><br>
<center><img src="cid:part1.00020000.01080800@cs.uchicago.edu"></center>
<p><br>
</p>
<hr size="4" width="90%"><br>
<center><img src="cid:part2.03080002.04030403@cs.uchicago.edu"></center>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
===================================================
Ioan Raicu
Ph.D. Candidate
===================================================
Distributed Systems Laboratory
Computer Science Department
University of Chicago
1100 E. 58th Street, Ryerson Hall
Chicago, IL 60637
===================================================
Email: <a class="moz-txt-link-abbreviated" href="mailto:iraicu@cs.uchicago.edu">iraicu@cs.uchicago.edu</a>
Web: <a class="moz-txt-link-freetext" href="http://www.cs.uchicago.edu/~iraicu">http://www.cs.uchicago.edu/~iraicu</a>
<a class="moz-txt-link-freetext" href="http://dev.globus.org/wiki/Incubator/Falkon">http://dev.globus.org/wiki/Incubator/Falkon</a>
<a class="moz-txt-link-freetext" href="http://dsl-wiki.cs.uchicago.edu/index.php/Main_Page">http://dsl-wiki.cs.uchicago.edu/index.php/Main_Page</a>
===================================================
===================================================
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