How to set the number of terminals for each work instance?

[Eleanor962]

Hi,

I'm trying to use oltpbench to generate a high-variation workload. Looking at XML files, I find

<!-- The workload -->
    <terminals>2</terminals>
    <works>
        <work>
          <time>60</time>
          <rate>10000</rate>
          <weights>45,43,4,4,4</weights>
        </work>
    </works>

By adding more work entry, I'm able to tune rate and weights as time go by. I'm wondering whether there's anyway to change number of terminals during the execution?
Looks like there would be a warmup at the beginning of execution, so I prefer not calling oltpbenchmark for multiple times.

Thanks in advance!

[lmwnshn]

I don't know for sure if functionality like this exists. I don't think so. The closest thing might be specifying number of terminals per benchmark.

The easiest thing might be to:

1. Duplicate the benchmark in the benchmarks folder, so you have "tpcc1", "tpcc2".
2. Specify number of terminals for "tpcc1", "tpcc2", etc. See https://github.com/oltpbenchmark/oltpbench/blob/master/config/sample_chbenchmark_config.xml for an example.

Of course, if you add the feature, that's great too! Please note that we may be merging https://github.com/oltpbenchmark/oltpbench/tree/oltpbench_tim soon as a "version 2", #363 , so active development should happen on that branch.