Hi. I have received the new Dell XPS 15 9560 and got very puzzled as to why compiling central was so slow on this machine. This is comparing against a Gigabyte Aero 14 with a gen 6 intel CPU (2.6Ghz i7-6600HQ) vs Dell's 7th gen (2.8Ghz i7-7700HQ) On the Aero 14, compiling central takes 24 minutes. On the XPS 15, first go 38 minutes. The XPS 15 came with McAfee anti-virus and Windows Defender is disabled. An exclusion list made almost no difference. Disabling entirely McAfee: the time dropped to 28 minutes.Uninstalling McAfee completely, enabling Windows defender with an exclusion list as mentioned in the first post: 26.5 minutes Now disabling Windows Defender: not just an exclusion list saw the time dropped to 25 minutes.Interestingly, on the Aero disabling Windows Defender or having just an exclusion list made almost no difference in compilation time. I can't explain the reason. Maybe because big brother is watching all the time! After following the instructions listed there: http://www.ultrabookreview.com/14875-fix-throttling-xps-15/ Compilation time dropped to 23.8 minutes.The main factor was adding thermal pads to the MOSFETs. Undervolting the CPU by 125mV added 50s of compilation time, but dropped the processor temperature by 10C (max 78C vs 68C) and my guess will also add quite a lot of battery life. So if you're in a hurry, you may want to try disabling Windows Defender completely. FWIW: on those same machines running Linux Ubuntu 16.10;Aero 14: 14 minutesXPS 15: 13 minutes.That's out of the box, no tweaks of any kinds. JY ------- If it ain't broken, please fix it
On Fri, Mar 17, 2017 at 4:26 AM +0100, "Ben Kelly" <bke...@mozilla.com> wrote: Hi all, I'm trying to configure my new windows build machine and noticed that builds were still somewhat slow. I did: 1) Put it in high performance power profile 2) Made sure my mozilla-central dir was not being indexed for search 3) Excluded my mozilla-central directory from windows defender Watching the task monitor during a build, though, I still saw MsMpEng.exe (antivirus) running during the build. I ended up added some very broad exclusions to get this down close to zero. I am now excluding: - mozilla-central checkout - mozilla-build install dir - visual studio install dir - /users/bkelly/appdada/local/temp - /users/bkelly (because temp dir was not enough) I'd like to narrow this down a bit. Does anyone have a better list of things to exclude from virus scanning for our build process? Thanks. Ben _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
