Hi, it happens with 5.2 as well.
Regards Ingo Am 24.10.2017 um 12:55 schrieb Ingo Strüwing: > 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 > ------------------------------------------------------------------------------ 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
