Thanks for the comments guys. 

>> That's a good point. So let me add yet another question to the list: what 
>> kind of objects have you been trying to ingest? Do they contain large 
>> (>100MB) managed datastreams?

The objects I'm ingesting are quite straight forward (2MB PDF files and 
occasionally <1MB JPEGs. 

As with our ingest our setup is relatively 'vanilla'. The only applications 
running inside of Tomcat are Fedora and Solr. After your comment I actually 
double checked our VM configuration and made some changes. I assigned a CPU 
reservation of 1023MHz and it seems to have improved the performance of the 
machine. I think it may have been competing with the other VM's for resources 
previously.

>> That is definitely _not_ normal operation. Ingest is one of the most 
>> expensive operations Fedora can perform, but five minutes is _way_ out of 
>> whack. You shouldn't add any more resources until you know what's wrong in 
>> this configuration. Can you tell us a little more about your test system? 
>> What other services are running on it? 

I'm running Tomcat, Apache, MySQL and Sendmail. 

>> Are you sure that the host for the virtual instance is supplying sufficient 
>> processing resource to it? Enough memory? 

The VM previously had the default settings (CPU reservation 0, limit 1800MHz 
which has since been set to a reservation of 1023Mhz). It also has 1GB of 
memory assigned.

>> How is Java configured for the servlet container hosting Fedora? Are there 
>> any other applications in that container?

I don't have that much experience working with Tomcat and servlets so I cannot 
really expand on this area. We have Solr running under the same container. So 
far as I know the Java configuration should be the default. 

I think my config changes have improved my situation, I will be opening up my 
test scenario to more users over the next few days so I should now have a good 
chance to get some real feedback. Thanks for the comments. 

Conor



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Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing 
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