linux slow dow / where would i look to find the issue

Hi,

Maybe not related, but might be worth mentioning...

We have a CentOS 7 machine which does perform very badly compared to a much slower machine running CentOS 5.4. Quartus 10.0sp1 performs as expected, but Quartus 15.0 update 2 is really slow. For example when looking in the synthesis and fitter reports at the number for Elapsed time and Total CPU time, it can be seen the Total CPU time is lower than Elapsed time. Which tells that the cores are doing a lot of waiting and can't work in parallel. (On the slower machine which runs the synthesis faster the, Total CPU time is higher than Elapsed time).

Have anyone else seen this behavior?

Anyways it seem that is best to install Centos 6.5 instead of 7....

/BR Johan