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Status Not under consideration
Workspace Spectrum LSF
Created by Guest
Created on Jul 11, 2019

Limiting the query data size in LSF

We recently experienced problems with mbatchd due to the size of the query data.

The following is IBM support team's comments.

Based on query_info.log last Saturday, I saw many lines with same data size during 1 second.
Each line indicates 1 query per user. We can see there were 42 bjobs query with data size 26230804 bytes at 08:32:27. Total 33000+ queries within 5 minutes.
You could open diagnose query log today for 5 minutes and compare the query number. Then we can see the query is higher or normal in weekend.

So I'd like to ask about Limiting the query data size.

Could you create a function to limit query data size?

  • Guest
    Reply
    |
    Aug 8, 2019

    In many respects this is user education. Querying everything every few seconds is of little practical value. They should optimise their scripts and use bjobs -o ".." to return just the information that they need.

    Putting a size limit on the query would chop the output and most likely break scripts that were trying to parse it.