Geeking : 2634


Off-Topic / Geek / 2634	2633 \| 2635

Subject:	Re: News search function reactivated (was: News search function temporarily disabled)
Newsgroups:	lugnet.off-topic.geek
Date:	Wed, 3 Jan 2001 20:41:42 GMT
Viewed:	823 times

In lugnet.off-topic.geek, Todd Lehman writes: > In lugnet.off-topic.geek, Kevin Loch writes: > > In lugnet.admin.general, Todd Lehman writes: > > > The LUGNET News search function is now re-enabled. I completely revamped > > > the index data structures and list-merge algorithm and rewrote the core > > > query engine in C. It's a much more solid implementation. > > All geeks capitulate sooner or later on perl vs C. Of course > > Larry (and many others I work with) would tell you to write that > > stuff in Java but that would be a step backwards. > > I like Java. But this really needed to be close to the metal and generate > code that would fit in the L1 cache for the non-memory-bus-bound portions > of the loops. The GNU C compiler is incredible. Aah, you definately couldn't have done that in Java. Of course the ability to declare a couple register variables helps too. KL

Message has 2 Replies:

		Re: News search function reactivated (was: News search function temporarily disabled)
(...) Of course I've heard of situations where an interpreter outdid hand crafted assembler. This can occur if the portion of the interpreter necessary to run your code fits in the code cache and the byte codes fit in the data cache when the hand (...) (23 years ago, 3-Jan-01, to lugnet.off-topic.geek)

		Re: News search function reactivated (was: News search function temporarily disabled)
(...) I probably couldn't, no, but a very experienced Java programmer and a good JVM machine could conceivably do better than C. (It's not unheard of for Java to be faster than C for certain types of things.) The big hits would probably be the JVM (...) (23 years ago, 3-Jan-01, to lugnet.off-topic.geek)

Message is in Reply To:

		Re: News search function reactivated (was: News search function temporarily disabled)
(...) I like Java. But this really needed to be close to the metal and generate code that would fit in the L1 cache for the non-memory-bus-bound portions of the loops. The GNU C compiler is incredible. (...) It's the best C code I've written in 12 (...) (23 years ago, 3-Jan-01, to lugnet.off-topic.geek)

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