I have a batch program which inserts items in a solr/lucene index. 
all is going fine and I get update messages in the console like: 

14-jan-2008 16:40:52 org.apache.solr.update.processor.LogUpdateProcessor
finish
INFO: {add=[10485, 10488, 10489, 10490, 10491, 10495, 10497, 10498, ...(42
more)
]} 0 875

However, when timing this instruction on the client-side (I use SOlrJ -->
req.process(server)) I get totally different numbers (in the beginning the
client-side measured time is about 2 seconds on average but after some time
this time goes up to about 30-40 seconds, altough the solr-outputted time
stays between 0.8-1.3 seconds? 

Does this have anything to do with costly IO-activity that is accounted for
in the SOLR output? If this is true, what tool do you recommend using to
monitor IO-activity?

Thanks, 
Geert-Jan 
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