Webrev:
https://cr.opensolaris.org/action/browse/pkg/bpytlik/19147-v1
Bug:
19147 conflicting action checks can be faster if the image is known to
be good
This is another performance improvement.
On my x86 desktop, planning an update is about 16% faster and uses 1%
less memory. There's an 8.8% improvement in user time and a 77%
improvement in system time (according to ptime).
On a sparc box running a debug kernel, planning an update is 29% faster
and uses 1% less memory. The user time's improved by 7% while the system
time was improved by 93%.
I've included the user and system times because seeing twice the
performance improvement on sparc confused me until I realized how much
more time proportionally was being spent doing system calls. Since this
change should reduce how much I/O we do, and system calls are slower on
debug kernels, it makes sense that a larger improvement was seen.
Thanks,
Brock
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