On 1/10/2013 8:56 AM, Linoma DevTeam wrote:
Hi everyone,
I'm running some comparison tests with tomcat 6.0.35 and IIS running in
parallel on Windows Server 2008 R2. Now I would expect Tomcat to be
somewhat slower, given the extra JVM layer, but in some situations, i'm
seeing differences that are tough to swallow.
What JVM are you running under? Is it running the client or server
version? I've found huge performance improvements in some kind of
operations under a server JVM compared to client ones.
D
Downloads
IIS ~3.7 MB/s
Tomcat ~350 KB/s
Test Details:
I placed a ~500MB file in the document root of the web app on tomcat and
set up an HTTPS connector. Then I set up IIS with the same file and an
HTTPS listener. I configured the cipher suite in tomcat to be the same one
that was negotiated between IIS and my Chrome browser. Finally, I set the
JVM max memory to 1024MB with a min of 900MB to reduce the impact of the GC
and the memory allocation.
I'm using HTTP/1.1 connectors with pretty standard configuration:
<Server port="9005" shutdown="SHUTDOWN">
<Service name="admin">
<Connector port="9080" />
<Connector port="9443" protocol="HTTP/1.1"
SSLEnabled="true" enableLookups="false" disableUploadTimeout="true"
scheme="https" secure="true" clientAuth="false" sslProtocol="TLS"
algorithm="SunX509" keystoreFile="C:\temp\sample_keystore.jks"
keystorePass="password" keyAlias="sample-key" keystoreType="JKS"
truststoreFile="C:\temp\sample_truststore.jks" truststorePass="password"
truststoreType="JKS" />
<Engine name="admin" defaultHost="localhost">
<Host name="localhost" appBase="webapps"
errorReportValveClass="com.company.CustomErrorReportValve">
<Context path="/sample" docBase="C:\temp\application\WebRoot"
reloadable="false">
<Loader delegate="true" />
</Context>
</Host>
</Engine>
</Service>
</Server>
So, I extend the question of, why would tomcat only be able to reach 10% of
the speed IIS is able to server when running parallel tests? Any
suggestions on configurations that I could adjust on Tomcat, the JVM, or
operating system that improve that download speed?
Thanks in advance!
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