Date: Thu, 28 Aug 2003 11:59:50 +0200 From: Sheldon Hearn <sheldonh@starjuice.net> To: freebsd-java@FreeBSD.org Subject: Re: FreeBSD vs Windows 2000 "Advanced" Server Message-ID: <20030828095950.GE83970@starjuice.net> In-Reply-To: <20030828094833.GA82970@chihiro.leafy.idv.tw> References: <20030828090512.GB83970@starjuice.net> <20030828090852.GC83970@starjuice.net> <20030828094833.GA82970@chihiro.leafy.idv.tw>
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On (2003/08/28 17:48), leafy wrote: > > > The test class at the bottom of this message can fire about 1,800 [1] > > > threads on my FreeBSD 5.1-CURRENT box, with the native jdk-1.4.1. My > > > box is a PIII with 1G of RAM. > What is your sleep time settings? I can get to > leafy@chihiro:~/tmp$ java TestThreads 50000 10 > TestThreads: successfully fired 50000 threads > TestThreads: waited 10 milliseconds for all threads to complete > > But my box is a P4-1.8G with 256MB RAM, lengthing the sleeptime to 10,000 ms > also works, but drags my box down to nearly a halt. That's because memory is allocated for the stack of each thread. You don't have a lot of memory. Using a low sleep time means that you're not really keeping the threads alive long enough to have them all alive at once. I use 20000 as my sleep time. My box doesn't crawl, but I have 1G of memory. :-) Ciao, Sheldon.
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