Comments on: Debunking myths: proxies impact performance

By: Leroy

Leroy — Mon, 21 Nov 2011 14:29:26 +0000

Alef, thank you for the insight. If you are still active on this, can you explain if proxys affect bandwith as well?

By: proxies

proxies — Sun, 25 Sep 2011 11:32:12 +0000

I absolutely agree on these matters on using and improving proxy performance. Keep blogging.

By: kk

kk — Mon, 28 Feb 2011 05:01:37 +0000

Very Useful blog!!! Keep it up buddy !!

By: pls

pls — Thu, 11 Nov 2010 10:38:28 +0000

Thanks! Great post!

By: Female Circus Performer

Female Circus Performer — Sat, 15 May 2010 03:48:00 +0000

Alluring blog! Thanks for giving out this hearsay. It will be very constructive in regular part of site.

By: Alef Arendsen

Alef Arendsen — Thu, 17 Jan 2008 22:35:55 +0000

Hi Cliff,

this is exactly what I did. It was a very quick benchmark and this is the usual technique I use as well. I do usually execute these tests on a *nux-based machine, as I find the accuracy of system.currentTimeMillis() to be a little better there. As long as the you make the number of executions very big, it doesn't really make a difference anymore however…

One thing you have to keep in mind: micro benchmarks are not really useful if you *really* want to know about the performance of a specific operation. A micro benchmark ignores a lot of stuff such as concurrency, the difference in platforms you run the benchmark on, et cetera… So this is really only indicative.

By: Cliff Meyers

Cliff Meyers — Thu, 17 Jan 2008 21:49:27 +0000

Very interesting and useful article. May I ask how you performed this benchmark? Did you just loop over a method invocation a very large number of times, say several billion? I have been doing some benchmarks on operations that take roughly 1 millisecond to execute and I find that using calls to System.currentTimeMillis() seem to only have a precision of 15-20ms. I've compensated by running a very large number of tests, measuring the total and dividing to get an everage. But if there is some other technique for getting more precise time measurements I would love to know about it! Thanks.

-Cliff

By: 59 23 * * 0 flush » ההתחלה

59 23 * * 0 flush » ההתחלה — Tue, 27 Nov 2007 08:58:47 +0000

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By: John "Z-Bo" Zabroski

John "Z-Bo" Zabroski — Sat, 28 Jul 2007 14:46:49 +0000

Sorry. I was confused by this statement: "When I have time I'll try to have a look at the small benchmark that I prepared."

By: Alef Arendsen

Alef Arendsen — Thu, 26 Jul 2007 06:26:57 +0000

[quote comment="36230"]How do you intend on designing this benchmark? Now _that_ would be something to blog about. You might get good feedback on how to design or improve the quality of the benchmark, too.[/quote]
John,

I hope you realize that my goal of this blog entry was to actually point out that a I'm not going to do a benchmark as it is irrelevant. Of course, from a theoretic standpoint it would definitely be a nice exercise, but unfortunately I (and I think neither does any of my colleagues) don't have time for this…

regards,
Alef