On 12.06.20 13:02, d...@d404.nl wrote: > On 12-06-2020 12:49, Riccardo Mottola via Dng wrote: >> Hi all! >> >> I just upgraded from ascii to beowulf a pretty decent laptop, equipped >> with a core i7 and 8GB of RAM. >> >> I upgraded everything in place: so same desktop environment, same >> applications, same hard disk... just "apt-get dist-upgrade" essentially. >> >> I even kept gcc6 because I had it before and I need it. >> >> My test case is compiling ArcticFox, thus something in the realm of >> Firefox: lots of compiler activity, make, disk access, make and python. >> But, of course, predominant factor is compilation and linking. >> >> With ascii, I was consistently (= not just one build) doing a clean >> build in about 31 minutes! Quite fast for this small beast and I was happy. >> >> With beowulf, this number is consistently about 41 minutes. >> >> I say this is a very significant slowdown! Can I gain some speed back? >> Some setting? some spectre/meltdown mitigation? Having latest ascii, I >> think I had at least some of the backports. >> >> >> I am wary thus updating to beowulf on slower machines. >> >> Any ideas? >>
Just to be sure, try this line as kernel parameters: noibrs noibpb nopti nospectre_v2 nospectre_v1 l1tf=off nospec_store_bypass_disable no_stf_barrier mds=off tsx=on tsx_async_abort=off mitigations=off >> >> Riccardo >> _______________________________________________ >> Dng mailing list >> Dng@lists.dyne.org >> https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng > > According Geekbench > https://browser.geekbench.com/v4/cpu/compare/12415873?baseline=12415673 > removing mitigation mainly makes a difference on single core performance. > > But i recently did see some Intel firmware update passing at my system. > So maybe Ascii has not yet received the same updates as Beowulf. > > Grtz. > > Nick > > > > _______________________________________________ > Dng mailing list > Dng@lists.dyne.org > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng > _______________________________________________ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
