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Not directly related to the linked content, but "N times less" never really made that much sense to me. In this case, I'm guessing "5x reduction" means "80% l
by cbm-vic-20 5y ago
Not directly related to the linked content, but "N times less" never really made that much sense to me. In this case, I'm guessing "5x reduction" means "80% less"? Or "20% of the previous usage"?
- tyingq 5y ago"We went from 1400KB of RAM per repo to 310KB with no measurable latency changes." So, not exactly, but close. ~22% of previous usage.
- deleted 5y ago[deleted]
- nijaru 5y agoYes that is correct. It's not always the most intuitive language. 5 times less than 20 would be 4 or (20 * 1/5), the same as 20 is 5 times more than 4.
- ksec 5y agoYes it is the marketing speak of 80% less. And generally speaking works much better than percentage.
- nytgop77 5y agoI saw advertisements "now 20% cheaper!", while price change (original->new) was 30€->25€. Marketing always finds a way.. 5/30=16.6%, 5/25=20%
- DistractionRect 5y agoN times less usually just means it uses 1/N. So this would mean it uses only 20% of the memory it used originally.
- rusk 5y agoYeah it doesn’t make sense as the x in 5x I would have thought repetesents a multiplication rather than (divide) It would make more sense for me to say a fifth, or 1/5
- MichaelBurge 5y agolog(5x) = log(5) + log(x) log(x/5) = -log(5) + log(x) So the difference is just a sign change on a log scale. And it's natural to use a log scale when working with percentage changes.
- rusk 5y agoNatural for who? Perhaps better expressed as “5 fold”.