Benchmark (Phoronix): FreeBSD 9.0-RC2 vs. Oracle Linux 6.1
daniel at digsys.bg
Thu Dec 15 13:58:56 UTC 2011
On Dec 15, 2011, at 3:48 PM, Jeremy Chadwick wrote:
> That said: thrown out, data ignored, done.
> Now what? Where are we? We're right back where we were a day or two
> ago; meaning no closer to solving the dilemma reported by users and
> SCHED_ULE. Heck, we're not even sure if there is an issue, other than
> some folks confirming that SCHED_4BSD performs better for them (that's
> what started this whole thread), and there are at least a couple which
> have stated this.
But, are any of these benchmarks really engaging the 4BSD/ULE scheduler differences? Most such benchmarks are run on a system with no other load whatsoever and in no way represent real world experience.
What is more, I believe in such benchmarks "the system feels sluggish" is not measured at all. Even if it is measured, if in such case the benchmark finishes "better" - that is, faster, or say, makes the system freeze for the user for the duration of the test -- it will be considered "win", because the benchmark suite ran faster on that particular system -- whereas a system which ran the benchmark fast, provided good interactive response etc would be considered "loser".
I think it is not good idea to hijack this thread, but instead focusing on the other SCHED_ULE bashing thread to define an reasonable benchmark or a set of benchmarks rather -- so that many would run it and provide feedback.
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