On 7/3/19 11:43 PM, Jobst Schmalenbach wrote:
- How can it be that the DELL takes so much longer alltough on the far better hardware?
It looks like the DIY system has a CPU that's nearly twice as fast as the Dell's. The additional CPU in the Dell will run more tasks concurrently, but it won't make a single process faster.
You might also think that the SSD RAID would make the Dell faster, but that will only be true if the process that you're testing performs a significant amount of IO. If your DB operations are happening mostly in memory (that is, if the data is cached), then the faster CPU will be the primary determining factor.
The other thing that you left out of your description is the amount of data on each server. If your live server has a lot of data in its DB and the dev system has a small dataset suitable for testing, then generally you'd expect that the dev system's data is more likely to live in cache and avoid disk IO, and processing the smaller set will also take less CPU time.
https://www.cpubenchmark.net/cpu.php?cpu=Intel+Xeon+E3-1245+%40+3.30GHz&id=1202 https://www.cpubenchmark.net/cpu.php?cpu=Intel+Xeon+L5630+%40+2.13GHz&id=2086 _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos
