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Nice, a few seconds faster.
Sarcasm aside, to me, it doesn't really matter if I can tell the difference when the two are compared side-to-side, it matters if I can tell just by itself.
I know it doesn't seem like much, a 2.5% performance increase. But after rendering the same project 24 hours a day for two or three weeks, or two or three months, it's going to start looking like a much more significant number. Then, if you're running a render farm because it would take years to render your project on a single PC, then 2.5% is going to be looking like a huge number.
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Sure, if you're rendering for long spans of time, it may be more significant. However, if out of three months I only get two and a third days back thanks to the new kernel, it wouldn't matter to me because that time would be insignificant. Also, if it took months to render, I wouldn't even be doing it on a single PC, rather a render farm as you said. Then we'd go back to only saving a few minutes of time.
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