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UK_AddressCleanse and IPC

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Forum Member
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Joined: 15 Jan 2009

Posts: 3

PostPosted: Wed Apr 01, 2009 9:25 am 
Post subject: UK_AddressCleanse and IPC

Hi am using DS 3.1

When I run a job in AIX which contains one dataflow with a

This job only shows 3 processes and takes around 200 seconds to process 2000 rows using a Dataservices jobserver in AIX

I then run the same job but on a Dataservices Windows Server and then
see there are 7 processes, listing in the log what seems to be a reference to IPC? This takes around 48 seconds to prcoess 2000 rows using a Windows Dataservices jobserver

This basically will now make a job that used to run for 4 hours using DQ117 in DI117 to 7 days in Dataservices using AIX! crazy.gif

What is IPC and why is it not showing on AIX and does this effect the
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Werner Daehn
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Joined: 17 Dec 2004

Posts: 10593
Location: Germany

PostPosted: Fri Apr 03, 2009 1:31 pm 
Post subject: Re: UK_AddressCleanse and IPC

IPC is the InterProcessCommunication. One of your transforms is set the "execute as seperate process" and hence an IPC reader/loader is added to pass the data from one al_engine to the other. In windows this is important to give the DQ transform a process of its own so it can use 2GB of memory itself. In Unix as DI is a 64bit application there, it does not matter.

You should monitor the CPU usuage, if one CPU is at 100% and the others are not. Assuming that is the case, try setting the dataflow property DegreeOfParallelism to the amount of CPUs you have. Just for a try.

Werner Daehn
ex Product Manager Data Services at SAP SE
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