I have a dual PIII 1GHz, 1GB RAM box at home that I've run tomcat/java 1.3.1 on and it's exceptionally fast. I suspect the ISP is talking from experience with much older hardware. And as for rebooting, well that's garbage. I've run a tomcat server for months at a time and only restart it when I upgrade or make major changes - I never have to reboot the machine. Of course if the ISP is managing the system for you and doesn't want to support your configuration, then that's another story.
Jason. -----Original Message----- From: Abhijit Hiremagalur [mailto:[EMAIL PROTECTED]] Sent: Tuesday, 27 November 2001 10:32 AM To: [EMAIL PROTECTED] Subject: Slightly Offtopic: JVM slows a webserver down??? Ladies and Gentleman, I'm currently working on a few websites for a friend who will be hosting these on his own server. Since he has his own server he basically said that I could use pretty much any language/platform that I wanted to. The server is in the process of being setup by his ISP so he asked me to send them a list of SW that I would require to be installed on the server. Here's what I sent them. > Hi Allan, (ISP) > > Our Hardware: > Main Webserver: > Dual PIII 1GHz > 1GB ECC SDRAM > 2 x 17GB SCSI HDD(Mirrored) > 1 x 10/100 NIC > > The SW that we require: > Apache > Caucho Resin 2.3 (mod_caucho installed as an apache module) > Java SDK 1.3.1 > Java Enterprise Edition 1.2.1 > MySQL > Sendmail > Ssh > Bind 9 Here is the response that I received from the ISP. > The JVM and java apps are going to bog the machine down so much it's not funny. > Also the server WILL have to be rebooted anywhere between 3-4 and 7 days as the JVM itself > is not perfected yet, as a result it WILL eventually loose memory and slow down considerably.. > The best comparison ATM I can suggest is Netscape 4.7x & netscape 6.x > 4.78 is native C code 6.x is Java App over JVM > > Comparisons, machine(450Mhz,128MB) > Netscape browser > Function 4.x 6.x > -------------------------------------------- > Loading 5 secs 25+ secs > PageRender 5-10 secs 30+ secs > NewWindow 0.5 secs 15+ secs > CloseWindow 0.2 Secs 4 secs > CPULoad 3.5% 33% > Memory 15% 27% > > As you can see Java is somewhat slow and hungry in comparison to native Applications. > That's just a single client application > Apache, mySQL, Sendmail, imap, pop3, etc as allan has will happliy run on 300MHz , 128MB > Though you might want 500Mhz+ 256MB for the Java Servlets > The bottom line is I would be reluctant to build a machine that performs so slowly and unreliably, > yes unreliable from NOT Linux base but the JVM running on top. > I would prefer to build and support a machine that is less 'feature rich' but reliable & fast > than one that 'supports anything' that requires reboots to 'fix' > > UNIX is not Windows Now I don't have enough experience to present a strong case for Java,and was therefore wondering if any of you could help me out with this. I will only be running JSP's/Servlets/Beans on the server, no other Java 'Apps' as such. Has anyone else experienced the need to reboot a server with a JVM installed every 3-5 days?? Is the JVM not perfected yet???? Can anyone see any other possible problems that we might have with the SW I requested? Could someone compare Resin with the alternatives like Tomcat or Jetty in terms of perfomance, ease of setup etc. Without JDK installed the only alternative that I see if using Perl or PHP to do all my development.. this isn't a pretty thought.... Thanks again, though I'm not active participant in this group I read most of the posts and find them most helpful. Regards, Abhijit. =========================================================================== To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST". Some relevant FAQs on JSP/Servlets can be found at: http://archives.java.sun.com/jsp-interest.html http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.jsp http://www.jguru.com/faq/index.jsp http://www.jspinsider.com =========================================================================== To unsubscribe: mailto [EMAIL PROTECTED] with body: "signoff JSP-INTEREST". For digest: mailto [EMAIL PROTECTED] with body: "set JSP-INTEREST DIGEST". Some relevant FAQs on JSP/Servlets can be found at: http://archives.java.sun.com/jsp-interest.html http://java.sun.com/products/jsp/faq.html http://www.esperanto.org.nz/jsp/jspfaq.jsp http://www.jguru.com/faq/index.jsp http://www.jspinsider.com
