MQSeries.net :: View topic

WBI_user · Posted: Wed May 07, 2008 8:46 am Post subject: 61 fileInput ftp performance

I am using WMB 61 on AIX
I have a very simple flow
FileInput - compute - MQOUTPUT
The fileInput is using the blob parser, the compute node is just doing copy entire message.
The entire file will be output to the queue as a MQ message.
The hardware configuration is
AIX(File server) - AIX(Message broker). So the broker FileInput node is getting the file from a remote AIX server using ftp.
The ftp scan delay is set at 30 sec

I started with no file on the file server with the message flow running.
I than created the file using a shell script which included a timestamp in the file. So I know the time when the file is created. The file is of size 2M bytes.

When I compare the MQPUT time of the message on the output queue and the timestamp in my file, there is a close to 2 minute 10 sec difference. The clock of the two boxes has a 10 sec difference. Taking the full 30 sec scan delay into account, it still takes cloase 2 minutes from the file is picked up to the creation of the output message.

I than repeat the same test with an Input file size increased from 2M to 5 M, the elapse time is about 4 minutes.

If I just ftp the same 2M file between the two AIX boxes, it takes 0.033 sec.

Why is the fileInout node so slow ? Is there any tuning I can do to make it faster? Please let me know if my test is wrong.

Has anyine perform similar kind of testing and have different results ?