ralfconn wrote: > Il 16/05/24 20:46, Dale ha scritto: >> Question. How are the compiles times between the old FX-8350 and the >> newer Ryzen 9? I currently have a FX-8350. Plan to build to a new >> Ryzen something, maybe 5 at first. Just curious what difference in >> speed you see. > I've not saved the merge times for the 8350 so I'll only give you the > Ryzen 9 times, maybe you can compare with yours: > > # qlop -mav net-libs/webkit-gtk > net-libs/webkit-gtk-2.44.1-r410: 41′22″ average for 1 merge > net-libs/webkit-gtk-2.42.5-r410: 19′45″ average for 2 merges > net-libs/webkit-gtk-2.42.4-r600: 47′39″ average for 1 merge > net-libs/webkit-gtk-2.42.4-r410: 48′55″ average for 1 merge > net-libs/webkit-gtk-2.42.3-r410: 21′09″ average for 1 merge > > # qlop -mav firefox > www-client/firefox-126.0: 31′35″ average for 1 merge > www-client/firefox-125.0.3: 13′29″ average for 1 merge > www-client/firefox-125.0.2: 12′42″ average for 1 merge > www-client/firefox-125.0.1: 30′18″ average for 1 merge > > The 2x or more difference in merge times I believe are due to the fact > that sometimes I build the bigger packages on their own to avoid > running out of memory, other times I don't so the load gets split > amongst various compilations and time stretches. I think firefox with > the 8350 was in the hours range, so I had switched to the -bin since > long time. > > I have 64Gb of RAM to account for the 12cpus/24threads. Even so I can > run out of memory if I try to build firefox+thunderbird+webkit-gtk at > the same time, so I often use the --exclude emerge option with these > behemoths. > > I've also had a Ryzen 7 5700X/32Gb for a short time, then I passed it > to my son and got me the 9. These are the merge times for the > webkit-gtk, I switched to non-bin firefox only with the 9: > > # qlop -mav net-libs/webkit-gtk > net-libs/webkit-gtk-2.40.5-r410: 26′52″ average for 1 merge > net-libs/webkit-gtk-2.40.4-r410: 25′16″ average for 1 merge > net-libs/webkit-gtk-2.40.3-r410: 59′46″ average for 1 merge > net-libs/webkit-gtk-2.40.2-r410: 32′47″ average for 2 merges > > Not a huge difference compared to the 9, as foreseeable, after all > it's the exact same architecture with some more pepper. > > If you go for the Ryzen remember that its instruction set is not > compatible with the Athlon's so if you built your 8350 system with > e.g. -march=native (as I did) you need to recompile @world with a less > restrictive -march before moving the disk to the Ryzen system > otherwise it won't even boot. > > raf > >
The only package I can compare to is Firefox. I don't have the other one. Still, it compiles Firefox a lot faster. It's a pretty good size difference in speed. Thanks for the info. Helps me know what to expect. Dale :-) :-)
