Re: [darktable-dev] kernel performance: 3.16 vs. 4.9

2017-02-05 Thread johannes hanika
hi, how much do you trust your numbers? they look very weird to me. such a speedup sounds more like one is running single threaded :) did you run it a couple of times one after the other? to rule out disk prefetching etc? using the minimum time of three consecutive runs may be a good indication.

[darktable-dev] kernel performance: 3.16 vs. 4.9

2017-02-05 Thread Matthias Bodenbinder
Hi, I have upgraded my PC to newest chipset and CPU: Kaby Lake, Z270 with i7-7700K. Out of curiosity I did a kernel benchmark. Comparing darktable performance with kernel 3.16.0-4-amd64 and 4.9.0-1-amd64. I use the following command to run darktable: darktable-cli test.CR2 test.jpg --core -d pe