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- Path: sparky!uunet!iWarp.intel.com|inews!pinkas
- From: pinkas@caraway.intel.com (Israel Pinkas)
- Newsgroups: comp.programming
- Subject: Re: Does "400% faster" make sense? (Was: Re: finding 1st one in integer)
- Message-ID: <PINKAS.92Jul23100825@caraway.intel.com>
- Date: 23 Jul 92 17:08:25 GMT
- References: <1992Jul22.120735@is.morgan.com> <LOWRY.92Jul22154231@rotor.watson.ibm.com>
- <1992Jul22.172337@is.morgan.com>
- Sender: news@inews.intel.com
- Organization: Software Technologies, INTeL Corporation, Santa Clara, CA
- Lines: 35
- In-reply-to: berlin@is.morgan.com's message of 22 Jul 92 21:23:37 GMT
-
- berlin@is.morgan.com (Alexander Berlin) writes:
-
- If some job takes me 100 seconds and you can do it in 25 seconds:
- I am 300% slower then you are. (100-25)/25*100
- You are 75% faster than I am(not 300) (100-25)/100*100
- Your performance is 400% of mine. (1/25)/(1/100)*100
- My performance is 25% of yours. (1/100)/(1/25)*100
-
-
-
- Guess again Alexander. When calculating delta%, divide by the original
- number. Thus:
-
- If some job takes me 100 seconds and you can do it in 25 seconds:
- I am 75% slower then you are. (25-100)/100*100% = -75%
- You are 300% faster than I am. (100-25)/25*100% = 300%
- Your performance is 400% of mine. (1/25)/(1/100)*100% = 400%
- My performance is 25% of yours. (1/100)/(1/25)*100% = 25%
-
-
- To compare:
-
- If I can dig a hole in 60 seconds, and you can dig the hole in 30 seconds,
-
- you are twice as fast as me: 60/30
- I am half as slow as you: 30/60
-
-
- For more info, see a good high school algebra book.
-
- -Israel
- --
- Disclaimer: The above are my personal opinions, and in no way represent
- the opinions of Intel Corporation. In no way should the above be taken
- to be a statement of Intel.
-