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Groups > comp.lang.java.programmer > #27526
| From | Jan Burse <janburse@fastmail.fm> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: java8 up to 6x slower than java7 |
| Date | 2014-02-16 14:43 +0100 |
| Organization | albasani.net |
| Message-ID | <ldqf9a$adv$2@news.albasani.net> (permalink) |
| References | <29a51a94-8f9a-41b1-980f-e8c13e2d11a2@googlegroups.com> <ldnitt$mtv$1@news.albasani.net> <ldnkf1$pp0$1@news.albasani.net> <bmbo69F4b27U1@mid.individual.net> <ldqf11$adv$1@news.albasani.net> |
Jan Burse schrieb: > For the slower use cases I am planing using my custom > HashMap. The custom HashMap has some further advantages > besides sparing the iterator, I also don't do mod > counting. Last but not least, one feature I am constantly missing from HashMap, is that it should grow back in size. HashMap is only growing and growing, and never automatically shrinks. > One trick to develop a custom HashMap is to use the > JDK source code, and create a stripped down variant. > Not sure whether copyright allows this really. So I > didn't mention that here. The shrinking I didn't find in the JDK source code, so this is genuine implementation. I use a lower watermark which is 1/4 and I am shrinking to 1/2. Works pretty well so far.
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java8 up to 6x slower than java7 Dennis Haupt <d.haupt82@gmail.com> - 2014-02-15 03:00 -0800
Re: java8 up to 6x slower than java7 Jan Burse <janburse@fastmail.fm> - 2014-02-15 12:26 +0100
Re: java8 up to 6x slower than java7 Jan Burse <janburse@fastmail.fm> - 2014-02-15 12:28 +0100
Re: java8 up to 6x slower than java7 Jan Burse <janburse@fastmail.fm> - 2014-02-15 12:52 +0100
Re: java8 up to 6x slower than java7 Robert Klemme <shortcutter@googlemail.com> - 2014-02-16 13:10 +0100
Re: java8 up to 6x slower than java7 Jan Burse <janburse@fastmail.fm> - 2014-02-16 14:38 +0100
Re: java8 up to 6x slower than java7 Jan Burse <janburse@fastmail.fm> - 2014-02-16 14:43 +0100
Re: java8 up to 6x slower than java7 Robert Klemme <shortcutter@googlemail.com> - 2014-02-16 14:53 +0100
Re: java8 up to 6x slower than java7 Jan Burse <janburse@fastmail.fm> - 2014-02-16 20:27 +0100
Re: java8 up to 6x slower than java7 Jan Burse <janburse@fastmail.fm> - 2014-02-16 20:36 +0100
Re: java8 up to 6x slower than java7 Robert Klemme <shortcutter@googlemail.com> - 2014-02-17 18:55 +0100
Re: java8 up to 6x slower than java7 Wanja Gayk <brixomatic@yahoo.com> - 2014-03-02 20:52 +0100
Re: java8 up to 6x slower than java7 Jan Burse <janburse@fastmail.fm> - 2014-03-03 11:53 +0100
Re: java8 up to 6x slower than java7 Joerg Meier <joergmmeier@arcor.de> - 2014-03-03 17:16 +0100
Re: java8 up to 6x slower than java7 Jan Burse <janburse@fastmail.fm> - 2014-03-03 19:53 +0100
Re: java8 up to 6x slower than java7 Lew <lewbloch@gmail.com> - 2014-03-03 13:44 -0800
Re: java8 up to 6x slower than java7 Kevin McMurtrie <mcmurtrie@pixelmemory.us> - 2014-02-16 11:24 -0800
Re: java8 up to 6x slower than java7 Robert Klemme <shortcutter@googlemail.com> - 2014-02-15 12:55 +0100
Re: java8 up to 6x slower than java7 "Qu0ll" <Qu0llSixFour@gmail.com> - 2014-02-15 23:42 +1100
Re: java8 up to 6x slower than java7 Roedy Green <see_website@mindprod.com.invalid> - 2014-02-16 00:25 -0800
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