Hello Shuo, > Have you compared the performance of an unmodified Genode system (e.g., > qt5.run) with VSOS? > I have compared the performance of an unmodified Genode system (both > 13.02 and 14.08) and VSOS both on qemu and real machine. The performance > of them are similar which cannot satisfy our team leader/my advisor. He > thought that it should be faster for apps on Genode (all operations > should be finished at once), but both unmodified Genode and VSOS cannot > satisfy him. He thought the problem may be related to inter-process > communication between Init and ,or interaction between Qt and other > parts of Genode, but I don't find out the problem in these aspects.
your observation surprises me. We have recently compared the performance of Arora (using Qt5, not Qt4!) running on the Pandaboard by measuring page-load times of large websites like spiegel.de. We found that Arora running on the base-hw kernel was actually faster than Arora running on the current version of Ubuntu Linux. Have you considered to cross-correlate the performance issues using different kernels? E.g., running the qt5.run script on NOVA instead of Fiasco.OC? Some workloads are known to be extremely slow on Fiasco.OC. See [1] for more details. [1] https://github.com/genodelabs/genode/issues/712 Also, it might be worth considering to test the scenarios on a different hardware platform and revisit the BIOS settings for power-management. Finally, I'd like to reinforce what Vasily just said. Please provide us with a metric for "good" performance. Best regards Norman -- Dr.-Ing. Norman Feske Genode Labs http://www.genode-labs.com · http://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth ------------------------------------------------------------------------------ Want excitement? Manually upgrade your production database. When you want reliability, choose Perforce Perforce version control. Predictably reliable. http://pubads.g.doubleclick.net/gampad/clk?id=157508191&iu=/4140/ostg.clktrk _______________________________________________ genode-main mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/genode-main
