Re: [gentoo-dev] Manifest2 hashes, take n+1-th: 3 hashes for the tie-breaker case

[Gordon Pettey]

On Sun, Nov 12, 2017 at 8:22 PM, Joshua Kinard <kumba@g.o> wrote:

> Minor clarification, old single core //and// uni-processor.  Some older
> machines have multiple physical CPUs that are single-core.  Threading
> should be
> okay on these, as long as the thread count stays under NR_CPUS.
>
> I also have a really old single-CPU system, MIPS (obviously).  Not the
> fastest
> on the block compared to the other equipment I've got, but does anyone
> know of
> any simple timing scripts/programs available that can benchmark some of
> these
> proposed digest hashes?  If they turn out to be reasonably quick on my old
> machine, I doubt then that speed will be too much of an issue.
>

Even on your "old single-CPU MIPS" system, what percentage of time is
spent verifying manifest hashes compared to actually building/installing?
The whole "slow and/or multiple hashes will cause problems" argument
seems specious.