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Source Buffer Index and Packet Size |
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iharper
Newbie Joined: October 13 2015 Status: Offline Points: 12 |
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Posted: July 11 2017 at 3:00pm |
Is it possible to change the Kermit source buffer index and max packet size in a running production system with sessions running in AccuTerm?
We're running D3 on Linux, I was looking at the Kermit config in FTSETUP and saw that we're using 250 and 94 for the source buffer index and max packet size. In the documentation and other threads I've seen recommendations for 700 & 500 or 2000 & 2000 for the source buffer and max packet size. I'm concerned that changing these values while we've got many open sessions will cause problems. Thanks |
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PSchellenbach
Admin Group Moderator Joined: December 15 2003 Location: United States Status: Offline Points: 2150 |
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Hi Ian -
You can change those setting while users are running AccuTerm. They are MATREAD into an array when any of the FT programs begin, so changing them will not affect any file transfer currently in progress. Thanks, Pete |
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iharper
Newbie Joined: October 13 2015 Status: Offline Points: 12 |
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Thanks for the reply Pete! Follow up question, what does the FTPARAMS file control?
Changing the Kermit config makes a huge difference in file transfer speeds! I ran some tests using a 122,567 byte file. Here's the results that I got: Source Packet Transfer Index Size Time (ms) 250 94 8771 750 500 2036 1000 1000 1301 1500 1500 1072 1700 1700 1066 1800 1800 1065 2000 2000 983 4000 4000 1120 |
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TonyG
Beta Tester Joined: February 04 2004 Location: United States Status: Offline Points: 127 |
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Dang, I'm gonna hit that setting!
It would be rather easy to automate a test which did the above with a much larger sample, and then locked-in the final best value for the current config. ... One of these days... |
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Tony Gravagno Nebula Research & Development
TG@ Nebula-RnD . com http://Nebula-RnD.com/blog http://Twitter.com/TonyGravagno http://groups.google.com/group/mvdbms https://www.linkedin.com/groups/64935 |
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