Avi Kivity wrote:
I estimate that that take_cpu_down will run for about a millisecond if
there are a few hundred vcpus which have last run on the dying cpu (and
that's an extreme case, which is not expected in normal operation).
I measured vmclear time on an uncached vmcs (which would be all except
for a handful which are cached on the cpu core) at 144 cycles. Assuming
a couple of cache misses for walking the list and accessing the vmcs,
we're at about 500 cycles per vcpu, or 250us @ 2GHz. So worst case is
significantly less than 1 ms.
Is this acceptable for take_cpu_down()?
--
error compiling committee.c: too many arguments to function
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
