On Wednesday, August 3, 2016 at 10:56:37 AM UTC+1, Alex wrote: > On 08/03/2016 11:39 AM, JPL wrote: > > [...] > > Can someone tell me what difference the following settings will > > make: > > > > - Initial memory min / max. I'm going for 500/3000 fo0r all as I have > > 8GB memory. Reasonable? > Don't overprovision for system-related VMs. A netVM will rarely need > more than 1GB, same for firewallVM. > > You appVMs may vary: in my work vm, where I use 2 IDEs (Android Studio > and MonoDevelop) + android emulator + firefox + thunderbird, I capped at > 10GB and it works ok. My workstation has 32GB ram. > > > - VCPUs - defaults to 2 but I can pick a maximum of 8. Which should I > > choose (processor is Intel i7)? > Don't overprovision vCPUs: the hypervisor will have to find *that many* > cores free at the same time to run your VM, and that's why VMWare > recommends 1vCPU for every VM on their ESX/ESXi infrastructure that you > can upgrade to 2 if needed. > > I am against giving more than 2 vCPUs per VM in Qubes, and I recommend > careful experiments when tweaking this value (increment by 1 and test > with your actual workload, if there are performance gains or losses). > > > - Tickbox for include in memory balancing. What difference does this > > make? Should I tick it for all VMs? > You cannot have memory balancing enabled for VMs with devices attached; > apart from that, there's no actual reason to allocate fixed amounts of > RAM for you VMs. Say, you dedicated 10GB out of 16 to one important VM, > but now you're just upgrading your templates with all the appVMs turned > off, and you'd like the templates to benefit of all available memory > without having to manually correct allocations. Or you just closed your > personal Firefox instance to gain a little room for a big compilation in > the work AppVM. > > TL;DR: I think the defaults provided in Qubes are reasonably ok, and > while they may be changed if needed, changes should be tested carefully > - knobs are inter-dependent, and giving "more" of any one may actually > reduce performance overall, or for specific tasks. > > -- > Alex
Thanks for the detailed answer Alex. Makes sense now. Cheers -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/550d9430-3084-4e10-b7c7-7abda108d8b8%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
