Yes and no. freeMemory returns the amount of Free memory in the VM, not in the hardware system! The amount of Free memory is dependend on the total amount of memory that is allocated by the VM (which can change during the running of an app.
You can use the -Xms and -Xmx parameters to specify min and max values for a certain application Geert Van Damme > > Yes, use: > java.lang.Runtime.getRuntime().freeMemory() > which returns a long that is the amount of free memory in the system. > > -----Original Message----- > From: Clayton Nash <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED] <[EMAIL PROTECTED]> > Date: Friday, November 16, 2001 10:55 AM > Subject: Heap Size > > > >I have an application that on occasion gets large objects > (megabytes) from > >the database. This leads to the occasional out of memory error. I also > >suspect that I have some memory leakage so heap size also goes after a > >period of time. > > > >Is there any way from within a JSP page or servlet to measure the current > >size and free space in the heap? At least this way I'll be forewarned and > >can restart the application. > > > >Thanks, > > > >Clayton > > > >================================================================= > ========== > >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 > > > >_____________________________________________________________________ > >This message has been checked for all known viruses by Star Internet > >delivered through the MessageLabs Virus Scanning Service. For further > >information visit http://www.star.net.uk/stats.asp or alternatively call > >Star Internet for details on the Virus Scanning Service. > > > _____________________________________________________________________ > This message has been checked for all known viruses by Star Internet > delivered through the MessageLabs Virus Scanning Service. For further > information visit http://www.star.net.uk/stats.asp or alternatively call > Star Internet for details on the Virus Scanning Service. > > ================================================================== > ========= > 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
