We run as follows:

* sis3316 digitizers in a vme crate
* 1-2 midas events /s
* data rate at 20 MB/s

At a rate of 30 MB/s the daq crashed because the I think the mlogger can`t follow:

  * it runs at 100% cpu
  * memory usage of mlogger process goes from 2% to 15%
  * All other processes < 50 % cpu and < 20% RAM

Both the vme frontend and the mlogger crash about 2.5 minutes into a run. Both
the logger and vme fe spit out:
bm_validate_client_pointers: Assertion `pclient->read_pointer >= 0 &&
pclient->read_pointer <= pheader->size' failed.
Aborted

I first thought that writing-to-disk could be a bottle neck. But when I write to
an SSD, same thing.

Is there another bottleneck which keeps the mlogger busy?