Hi Christian, I tried it with single Context also still it is taking same time as with different context. Queries written in optimized manner.Disk operation is also high taking 10 to 20 mb reading per second. I will try with SSD. Could you please guide me to sharing data between queries.
On Wed, Nov 13, 2013 at 4:11 PM, Christian Grün christian.gruen@gmail.comwrote:
Hi Pushpendra,
first of all, it’s highly advisable to only create one instance of the Context class and pass it on as reference. Regarding the slow down, I assume that your queries read a lot of data sequentially, and the concurrent query execution leads to competing disk operations, leading to random access patterns. This problem can to some extent be alleviated by switching to SSDs, but a cheaper and more straightforward alternative could be to optimize your queries first.
Best, Christian ___________________________
On Wed, Nov 13, 2013 at 7:38 AM, Pushpendra Singh Sengar pushpendra1412@gmail.com wrote:
Hi All, I create a collection of 4.5 gb xml document. and process some Xquery in sequencial manner then it is taking adequate
time
to process all queries. But when I converting process to multi threading then it is taking more
than
10 times of time. Please someone suggest what is the best way to process Xquey in multithreading model.
MY code is following : Thread thread = new Thread(new XqueryProcessor( new Context(),"db1")); Thread thread1 = new Thread(new XqueryProcessor( new
Context(),"db2"));
Thread thread2 = new Thread(new XqueryProcessor( newContext(),"db3"));
thread.start(); thread1.start(); thread2.start();Xquery Processor has all queries which need to process. and db1, db2 ,db3 are basically same xml files three collection.
-- Thanks & Regards , Pushpendra Singh
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