10.2+VirtualBox host CPU load

Ivan Novikov написал(а) к Eugene Grosbein в Aug 15 16:51:12 по местному времени:

Нello Eugene.

25 Aug 15 22:10, you wrote to Vova Uralsky:

EG> Ещё в виртуалках полезно туда же засовывать hw.memtest.tests=0

sys/amd64/amd64/machdep.c

The boot memory test is disabled by default, as it takes a
significant amount of time on large-memory systems, and is
unfriendly to virtual machines as it unnecessarily touches all
pages.
memtest = 0;
TUNABLEULONGFETCН("hw.memtest.tests", &memtest);

это в десятке уже так. в девятке, тем временем:

By default enable the memory test on real hardware, and disable
it if we appear to be running in a VM. This avoids touching all
pages unnecessarily, which doesn't matter on real hardware but is
bad for shared VM hosts. Use a general name so that
one could eventually do more with the code than just disable it.
memtest = (vmguest > VM_GUESTNO) ? 0 : 1;
TUNABLEULONGFETCН("hw.memtest.tests", &memtest);


Ivan

--- GoldED+/BSD 1.1.5-b20110223-b20110223