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| author | silby <silby@FreeBSD.org> | 2011-08-22 03:10:29 +0000 |
|---|---|---|
| committer | silby <silby@FreeBSD.org> | 2011-08-22 03:10:29 +0000 |
| commit | ee4d73add41ff99c62ad98f1f448e6078d5cafe8 (patch) | |
| tree | 41331ebf0cb758a5af6fe4608df53b64a2504f90 /lib/libc/stdlib/rand.c | |
| parent | 4cf14538f19d57ba3cb6d17d5a48d0a651829537 (diff) | |
| download | FreeBSD-src-ee4d73add41ff99c62ad98f1f448e6078d5cafe8.zip FreeBSD-src-ee4d73add41ff99c62ad98f1f448e6078d5cafe8.tar.gz | |
Disable TSC usage inside SMP VM environments. On my VMware ESXi 4.1
environment with a core i5-2500K, operation in this mode causes timeouts
from the mpt driver. Switching to the ACPI-fast timer resolves this issue.
Switching the VM back to single CPU mode also works, which is why I have
not disabled the TSC in that mode.
I did not test with KVM or other VM environments, but I am being cautious
and assuming that the TSC is not reliable in SMP mode there as well.
Reviewed by: kib
Approved by: re (kib)
MFC after: Not applicable, the timecounter code is new for 9.x
Diffstat (limited to 'lib/libc/stdlib/rand.c')
0 files changed, 0 insertions, 0 deletions
