Hi, more observations about this topic.
I reduced the CPU count in the guest to the recommended maximum of one CPU per host core. This made the failure pretty rare, but then it happened again one day. I have the problem from <= 5.1.24 up to 5.1.30. Yesterday I noticed by chance, that the VM recovered from the perceived "CPU loss" after a longer period of low load. Regards Ingo Am 01.08.2017 um 16:58 schrieb Ingo Strüwing: > Hi, > > currently, I'm on VirtualBox 5.1.26, but I watched this with some > earlier versions too (at least with 5.1.24). > > Host is Kubuntu 17.04 64 bit, guest is Kubuntu 16.04 64 bit. > > Host processor is Intel Core i7-7700K (4 cores, 8 Hyper Threads). > > Against the recommendation, I'm using 8 CPUs in the VM. I'm doing a lot > of parallel compilation and testing. I found, that using 8 gives me more > performance than the recommended 4. The host does little more than > running this single VM. > > Usually I see the total processor load in VM and host at par. > > Sometimes on extreme load on the VM, it happens, that the VM keeps being > loaded near 100%, but the host load drops to 30% or 24%. This gives me > the impression, that just 2 or 4 hyper threads are being used by the VM. > > Once run into this, the VM does not recover from it. I have to reboot > the VM. > > Any idea, how to get around this without a reboot? > > Regards > Ingo > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > VBox-users-community mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/vbox-users-community > _______________________________________________ > Unsubscribe: > mailto:[email protected]?subject=unsubscribe > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ VBox-users-community mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/vbox-users-community _______________________________________________ Unsubscribe: mailto:[email protected]?subject=unsubscribe
