El dissabte, 23 de novembre de 2019, a les 11:47:40 CET, Milian Wolff va escriure: > On Mittwoch, 19. Juni 2019 19:57:56 CET Albert Astals Cid wrote: > > El dimarts, 18 de juny de 2019, a les 12:04:38 CEST, David Edmundson va > escriure: > > > > Are we sure it's fair to assume people have SSD? our of the 4 laptops i > > > > own, only 2 have SSD.> > > > It's at least safe to assume it's the trend moving forward. > > > > > > > Do you think it's worth me trying in one of the two that don't have SSD? > > > > > > More data is normally a good thing. If you or anyone else wants to > > > collect stats: > > > From my git link above, it's as simple as running the normal ; cmake; > > > make ; ./kinittest -median 5 > > > > On my very old/very slow computer seems to make a lot of difference > > > > RESULT : DaveTest::testQProcess(): > > 2,625 msecs per iteration (total: 2,625, iterations: 1) > > RESULT : DaveTest::testKInit(): > > 1,852 msecs per iteration (total: 1,852, iterations: 1) > > > > > > RESULT : DaveTest::testQProcess(): > > 2,390 msecs per iteration (total: 2,390, iterations: 1) > > RESULT : DaveTest::testKInit(): > > 1,846 msecs per iteration (total: 1,846, iterations: 1) > > Hey Albert, > > these numbers are quite impressive but I can't quite explain those. Are you > measuring maybe a full debug build without any compiler optimizations?
I obviously can't remember, this was *months* ago, but i just ran the test again (making sure -O3 was there and not any -g) and got a bit different results, so maybe it was. New results: * testQProcess: 2200 msec per iteration * testKInit: 1700 msec per iteration Still a 20% speed improvement. > Then > the library sizes will be _much_ larger and thus trigger more page faults. If > every one of those is extremely slow on that machine compared to more modern > machines? > > May I ask how old this machine is and what the speed of the HDD is? It's a Lenovo ideapad S10-3t, around 10 years old, the HDD is slow. But it's of similar power to the Librecomputer La Frite i just got for free at LinuxAppSummit, so even this is on the slow end of things we support i think there's value on supporting it. If you're interested i can arrange you to get ssh access to the machine (the ideapad, i don't have all the KF5/Qt stack built for the LaFrite). Cheers, Albert > > Thanks > >