From mboxrd@z Thu Jan  1 00:00:00 1970
From: xuehai zhang <hai@cs.uchicago.edu>
Subject: a question about popen() performance on domU
Date: Wed, 23 Nov 2005 14:25:44 -0600
Message-ID: <4384D048.1020102@cs.uchicago.edu>
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Cc: Tim Freeman <tfreeman@mcs.anl.gov>, Kate Keahey <keahey@mcs.anl.gov>
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Dear all,
When I compared the performance of some application on both a Xen domU and a standard linux machine 
(where domU runs on a similar physical mahine), I notice the application runs faster on the domU 
than on the physical machine. Instrumenting the application code shows the application spends more 
time on popen() calls on domU than on the physical machine. I wonder if  xenlinux does some special 
modification of the popen code to improve its performance than the original Linux popen code?
Thanks in advance for your help.
Xuehai